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liqingqing_1229 2022-02-08 17:05:36 +08:00
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commit 87f8bf9cd5
64 changed files with 21 additions and 9855 deletions
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136
1-5-AArch64-Improve-A64FX-memset-for-small-sizes.patch
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@ -1,136 +0,0 @@
From 07b427296b8d59f439144029d9a948f6c1ce0a31 Mon Sep 17 00:00:00 2001
From: Wilco Dijkstra <wdijkstr@arm.com>
Date: Tue, 10 Aug 2021 13:30:27 +0100
Subject: [PATCH] [1/5] AArch64: Improve A64FX memset for small sizes
Improve performance of small memsets by reducing instruction counts and
improving code alignment. Bench-memset shows 35-45% performance gain for
small sizes.
Reviewed-by: Naohiro Tamura <naohirot@fujitsu.com>
---
sysdeps/aarch64/multiarch/memset_a64fx.S | 96 ++++++++++++--------------------
1 file changed, 36 insertions(+), 60 deletions(-)
diff --git a/sysdeps/aarch64/multiarch/memset_a64fx.S b/sysdeps/aarch64/multiarch/memset_a64fx.S
index ce54e54..cf3d402 100644
--- a/sysdeps/aarch64/multiarch/memset_a64fx.S
+++ b/sysdeps/aarch64/multiarch/memset_a64fx.S
@@ -51,78 +51,54 @@
.endm
.macro st1b_unroll first=0, last=7
- st1b z0.b, p0, [dst, #\first, mul vl]
+ st1b z0.b, p0, [dst, \first, mul vl]
.if \last-\first
st1b_unroll "(\first+1)", \last
.endif
.endm
- .macro shortcut_for_small_size exit
- // if rest <= vector_length * 2
- whilelo p0.b, xzr, count
- whilelo p1.b, vector_length, count
- b.last 1f
- st1b z0.b, p0, [dstin, #0, mul vl]
- st1b z0.b, p1, [dstin, #1, mul vl]
- ret
-1: // if rest > vector_length * 8
- cmp count, vector_length, lsl 3 // vector_length * 8
- b.hi \exit
- // if rest <= vector_length * 4
- lsl tmp1, vector_length, 1 // vector_length * 2
- whilelo p2.b, tmp1, count
- incb tmp1
- whilelo p3.b, tmp1, count
- b.last 1f
- st1b z0.b, p0, [dstin, #0, mul vl]
- st1b z0.b, p1, [dstin, #1, mul vl]
- st1b z0.b, p2, [dstin, #2, mul vl]
- st1b z0.b, p3, [dstin, #3, mul vl]
- ret
-1: // if rest <= vector_length * 8
- lsl tmp1, vector_length, 2 // vector_length * 4
- whilelo p4.b, tmp1, count
- incb tmp1
- whilelo p5.b, tmp1, count
- b.last 1f
- st1b z0.b, p0, [dstin, #0, mul vl]
- st1b z0.b, p1, [dstin, #1, mul vl]
- st1b z0.b, p2, [dstin, #2, mul vl]
- st1b z0.b, p3, [dstin, #3, mul vl]
- st1b z0.b, p4, [dstin, #4, mul vl]
- st1b z0.b, p5, [dstin, #5, mul vl]
- ret
-1: lsl tmp1, vector_length, 2 // vector_length * 4
- incb tmp1 // vector_length * 5
- incb tmp1 // vector_length * 6
- whilelo p6.b, tmp1, count
- incb tmp1
- whilelo p7.b, tmp1, count
- st1b z0.b, p0, [dstin, #0, mul vl]
- st1b z0.b, p1, [dstin, #1, mul vl]
- st1b z0.b, p2, [dstin, #2, mul vl]
- st1b z0.b, p3, [dstin, #3, mul vl]
- st1b z0.b, p4, [dstin, #4, mul vl]
- st1b z0.b, p5, [dstin, #5, mul vl]
- st1b z0.b, p6, [dstin, #6, mul vl]
- st1b z0.b, p7, [dstin, #7, mul vl]
- ret
- .endm
-ENTRY (MEMSET)
+#undef BTI_C
+#define BTI_C
+ENTRY (MEMSET)
PTR_ARG (0)
SIZE_ARG (2)
- cbnz count, 1f
- ret
-1: dup z0.b, valw
cntb vector_length
- // shortcut for less than vector_length * 8
- // gives a free ptrue to p0.b for n >= vector_length
- shortcut_for_small_size L(vl_agnostic)
- // end of shortcut
+ dup z0.b, valw
+ whilelo p0.b, vector_length, count
+ b.last 1f
+ whilelo p1.b, xzr, count
+ st1b z0.b, p1, [dstin, 0, mul vl]
+ st1b z0.b, p0, [dstin, 1, mul vl]
+ ret
+
+ // count >= vector_length * 2
+1: cmp count, vector_length, lsl 2
+ add dstend, dstin, count
+ b.hi 1f
+ st1b z0.b, p0, [dstin, 0, mul vl]
+ st1b z0.b, p0, [dstin, 1, mul vl]
+ st1b z0.b, p0, [dstend, -2, mul vl]
+ st1b z0.b, p0, [dstend, -1, mul vl]
+ ret
+
+ // count > vector_length * 4
+1: lsl tmp1, vector_length, 3
+ cmp count, tmp1
+ b.hi L(vl_agnostic)
+ st1b z0.b, p0, [dstin, 0, mul vl]
+ st1b z0.b, p0, [dstin, 1, mul vl]
+ st1b z0.b, p0, [dstin, 2, mul vl]
+ st1b z0.b, p0, [dstin, 3, mul vl]
+ st1b z0.b, p0, [dstend, -4, mul vl]
+ st1b z0.b, p0, [dstend, -3, mul vl]
+ st1b z0.b, p0, [dstend, -2, mul vl]
+ st1b z0.b, p0, [dstend, -1, mul vl]
+ ret
+ .p2align 4
L(vl_agnostic): // VL Agnostic
mov rest, count
mov dst, dstin
--
1.8.3.1

131
2-5-AArch64-Improve-A64FX-memset-for-large-sizes.patch
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@ -1,131 +0,0 @@
From 9bc2ed8f46d80859a5596789cc9e8cc2de84b0e7 Mon Sep 17 00:00:00 2001
From: Wilco Dijkstra <wdijkstr@arm.com>
Date: Tue, 10 Aug 2021 13:39:37 +0100
Subject: [PATCH] [2/5] AArch64: Improve A64FX memset for large sizes
Improve performance of large memsets. Simplify alignment code. For zero memset
use DC ZVA, which almost doubles performance. For non-zero memsets use the
unroll8 loop which is about 10% faster.
Reviewed-by: Naohiro Tamura <naohirot@fujitsu.com>
---
sysdeps/aarch64/multiarch/memset_a64fx.S | 85 ++++++++++----------------------
1 file changed, 25 insertions(+), 60 deletions(-)
diff --git a/sysdeps/aarch64/multiarch/memset_a64fx.S b/sysdeps/aarch64/multiarch/memset_a64fx.S
index cf3d402..75cf43a 100644
--- a/sysdeps/aarch64/multiarch/memset_a64fx.S
+++ b/sysdeps/aarch64/multiarch/memset_a64fx.S
@@ -27,14 +27,11 @@
*/
#define L1_SIZE (64*1024) // L1 64KB
-#define L2_SIZE (8*1024*1024) // L2 8MB - 1MB
+#define L2_SIZE (8*1024*1024) // L2 8MB
#define CACHE_LINE_SIZE 256
#define PF_DIST_L1 (CACHE_LINE_SIZE * 16) // Prefetch distance L1
-#define ZF_DIST (CACHE_LINE_SIZE * 21) // Zerofill distance
-#define rest x8
+#define rest x2
#define vector_length x9
-#define vl_remainder x10 // vector_length remainder
-#define cl_remainder x11 // CACHE_LINE_SIZE remainder
#if HAVE_AARCH64_SVE_ASM
# if IS_IN (libc)
@@ -42,14 +39,6 @@
.arch armv8.2-a+sve
- .macro dc_zva times
- dc zva, tmp1
- add tmp1, tmp1, CACHE_LINE_SIZE
- .if \times-1
- dc_zva "(\times-1)"
- .endif
- .endm
-
.macro st1b_unroll first=0, last=7
st1b z0.b, p0, [dst, \first, mul vl]
.if \last-\first
@@ -188,54 +177,30 @@ L(L1_prefetch): // if rest >= L1_SIZE
cbnz rest, L(unroll32)
ret
-L(L2):
- // align dst address at vector_length byte boundary
- sub tmp1, vector_length, 1
- ands tmp2, dst, tmp1
- // if vl_remainder == 0
- b.eq 1f
- sub vl_remainder, vector_length, tmp2
- // process remainder until the first vector_length boundary
- whilelt p2.b, xzr, vl_remainder
- st1b z0.b, p2, [dst]
- add dst, dst, vl_remainder
- sub rest, rest, vl_remainder
- // align dstin address at CACHE_LINE_SIZE byte boundary
-1: mov tmp1, CACHE_LINE_SIZE
- ands tmp2, dst, CACHE_LINE_SIZE - 1
- // if cl_remainder == 0
- b.eq L(L2_dc_zva)
- sub cl_remainder, tmp1, tmp2
- // process remainder until the first CACHE_LINE_SIZE boundary
- mov tmp1, xzr // index
-2: whilelt p2.b, tmp1, cl_remainder
- st1b z0.b, p2, [dst, tmp1]
- incb tmp1
- cmp tmp1, cl_remainder
- b.lo 2b
- add dst, dst, cl_remainder
- sub rest, rest, cl_remainder
-
-L(L2_dc_zva):
- // zero fill
- mov tmp1, dst
- dc_zva (ZF_DIST / CACHE_LINE_SIZE) - 1
- mov zva_len, ZF_DIST
- add tmp1, zva_len, CACHE_LINE_SIZE * 2
- // unroll
+ // count >= L2_SIZE
.p2align 3
-1: st1b_unroll 0, 3
- add tmp2, dst, zva_len
- dc zva, tmp2
- st1b_unroll 4, 7
- add tmp2, tmp2, CACHE_LINE_SIZE
- dc zva, tmp2
- add dst, dst, CACHE_LINE_SIZE * 2
- sub rest, rest, CACHE_LINE_SIZE * 2
- cmp rest, tmp1 // ZF_DIST + CACHE_LINE_SIZE * 2
- b.ge 1b
- cbnz rest, L(unroll8)
- ret
+L(L2):
+ tst valw, 255
+ b.ne L(unroll8)
+ // align dst to CACHE_LINE_SIZE byte boundary
+ and tmp2, dst, CACHE_LINE_SIZE - 1
+ st1b z0.b, p0, [dst, 0, mul vl]
+ st1b z0.b, p0, [dst, 1, mul vl]
+ st1b z0.b, p0, [dst, 2, mul vl]
+ st1b z0.b, p0, [dst, 3, mul vl]
+ sub dst, dst, tmp2
+ add count, count, tmp2
+
+ // clear cachelines using DC ZVA
+ sub count, count, CACHE_LINE_SIZE * 2
+ .p2align 4
+1: add dst, dst, CACHE_LINE_SIZE
+ dc zva, dst
+ subs count, count, CACHE_LINE_SIZE
+ b.hi 1b
+ add count, count, CACHE_LINE_SIZE
+ add dst, dst, CACHE_LINE_SIZE
+ b L(last)
END (MEMSET)
libc_hidden_builtin_def (MEMSET)
--
1.8.3.1

80
3-5-AArch64-Improve-A64FX-memset-for-remaining-bytes.patch
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@ -1,80 +0,0 @@
From 186092c6ba8825598ffdbf15dbf0823c771f560d Mon Sep 17 00:00:00 2001
From: Wilco Dijkstra <wdijkstr@arm.com>
Date: Tue, 10 Aug 2021 13:42:07 +0100
Subject: [PATCH] [3/5] AArch64: Improve A64FX memset for remaining bytes
Simplify handling of remaining bytes. Avoid lots of taken branches and complex
whilelo computations, instead unconditionally write vectors from the end.
Reviewed-by: Naohiro Tamura <naohirot@fujitsu.com>
---
sysdeps/aarch64/multiarch/memset_a64fx.S | 46 +++++++++-----------------------
1 file changed, 13 insertions(+), 33 deletions(-)
diff --git a/sysdeps/aarch64/multiarch/memset_a64fx.S b/sysdeps/aarch64/multiarch/memset_a64fx.S
index 75cf43a..337c86b 100644
--- a/sysdeps/aarch64/multiarch/memset_a64fx.S
+++ b/sysdeps/aarch64/multiarch/memset_a64fx.S
@@ -130,38 +130,19 @@ L(unroll8):
b 1b
L(last):
- whilelo p0.b, xzr, rest
- whilelo p1.b, vector_length, rest
- b.last 1f
- st1b z0.b, p0, [dst, #0, mul vl]
- st1b z0.b, p1, [dst, #1, mul vl]
- ret
-1: lsl tmp1, vector_length, 1 // vector_length * 2
- whilelo p2.b, tmp1, rest
- incb tmp1
- whilelo p3.b, tmp1, rest
- b.last 1f
- st1b z0.b, p0, [dst, #0, mul vl]
- st1b z0.b, p1, [dst, #1, mul vl]
- st1b z0.b, p2, [dst, #2, mul vl]
- st1b z0.b, p3, [dst, #3, mul vl]
- ret
-1: lsl tmp1, vector_length, 2 // vector_length * 4
- whilelo p4.b, tmp1, rest
- incb tmp1
- whilelo p5.b, tmp1, rest
- incb tmp1
- whilelo p6.b, tmp1, rest
- incb tmp1
- whilelo p7.b, tmp1, rest
- st1b z0.b, p0, [dst, #0, mul vl]
- st1b z0.b, p1, [dst, #1, mul vl]
- st1b z0.b, p2, [dst, #2, mul vl]
- st1b z0.b, p3, [dst, #3, mul vl]
- st1b z0.b, p4, [dst, #4, mul vl]
- st1b z0.b, p5, [dst, #5, mul vl]
- st1b z0.b, p6, [dst, #6, mul vl]
- st1b z0.b, p7, [dst, #7, mul vl]
+ cmp count, vector_length, lsl 1
+ b.ls 2f
+ add tmp2, vector_length, vector_length, lsl 2
+ cmp count, tmp2
+ b.ls 5f
+ st1b z0.b, p0, [dstend, -8, mul vl]
+ st1b z0.b, p0, [dstend, -7, mul vl]
+ st1b z0.b, p0, [dstend, -6, mul vl]
+5: st1b z0.b, p0, [dstend, -5, mul vl]
+ st1b z0.b, p0, [dstend, -4, mul vl]
+ st1b z0.b, p0, [dstend, -3, mul vl]
+2: st1b z0.b, p0, [dstend, -2, mul vl]
+ st1b z0.b, p0, [dstend, -1, mul vl]
ret
L(L1_prefetch): // if rest >= L1_SIZE
@@ -199,7 +180,6 @@ L(L2):
subs count, count, CACHE_LINE_SIZE
b.hi 1b
add count, count, CACHE_LINE_SIZE
- add dst, dst, CACHE_LINE_SIZE
b L(last)
END (MEMSET)
--
1.8.3.1

51
4-5-AArch64-Improve-A64FX-memset-by-removing-unroll3.patch
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@ -1,51 +0,0 @@
From e69d9981f858a38e19304e6ff5ebdf89f2cb0ba0 Mon Sep 17 00:00:00 2001
From: Wilco Dijkstra <wdijkstr@arm.com>
Date: Tue, 10 Aug 2021 13:44:27 +0100
Subject: [PATCH] [4/5] AArch64: Improve A64FX memset by removing unroll32
Remove unroll32 code since it doesn't improve performance.
Reviewed-by: Naohiro Tamura <naohirot@fujitsu.com>
---
sysdeps/aarch64/multiarch/memset_a64fx.S | 18 +-----------------
1 file changed, 1 insertion(+), 17 deletions(-)
diff --git a/sysdeps/aarch64/multiarch/memset_a64fx.S b/sysdeps/aarch64/multiarch/memset_a64fx.S
index 337c86b..ef03156 100644
--- a/sysdeps/aarch64/multiarch/memset_a64fx.S
+++ b/sysdeps/aarch64/multiarch/memset_a64fx.S
@@ -102,22 +102,6 @@ L(vl_agnostic): // VL Agnostic
ccmp vector_length, tmp1, 0, cs
b.eq L(L1_prefetch)
-L(unroll32):
- lsl tmp1, vector_length, 3 // vector_length * 8
- lsl tmp2, vector_length, 5 // vector_length * 32
- .p2align 3
-1: cmp rest, tmp2
- b.cc L(unroll8)
- st1b_unroll
- add dst, dst, tmp1
- st1b_unroll
- add dst, dst, tmp1
- st1b_unroll
- add dst, dst, tmp1
- st1b_unroll
- add dst, dst, tmp1
- sub rest, rest, tmp2
- b 1b
L(unroll8):
lsl tmp1, vector_length, 3
@@ -155,7 +139,7 @@ L(L1_prefetch): // if rest >= L1_SIZE
sub rest, rest, CACHE_LINE_SIZE * 2
cmp rest, L1_SIZE
b.ge 1b
- cbnz rest, L(unroll32)
+ cbnz rest, L(unroll8)
ret
// count >= L2_SIZE
--
1.8.3.1

96
5-5-AArch64-Improve-A64FX-memset-medium-loops.patch
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@ -1,96 +0,0 @@
From a5db6a5cae6a92d1675c013e5c8d972768721576 Mon Sep 17 00:00:00 2001
From: Wilco Dijkstra <wdijkstr@arm.com>
Date: Tue, 10 Aug 2021 13:46:20 +0100
Subject: [PATCH] [5/5] AArch64: Improve A64FX memset medium loops
Simplify the code for memsets smaller than L1. Improve the unroll8 and
L1_prefetch loops.
Reviewed-by: Naohiro Tamura <naohirot@fujitsu.com>
---
sysdeps/aarch64/multiarch/memset_a64fx.S | 45 ++++++++++++++------------------
1 file changed, 19 insertions(+), 26 deletions(-)
diff --git a/sysdeps/aarch64/multiarch/memset_a64fx.S b/sysdeps/aarch64/multiarch/memset_a64fx.S
index ef03156..7bf759b 100644
--- a/sysdeps/aarch64/multiarch/memset_a64fx.S
+++ b/sysdeps/aarch64/multiarch/memset_a64fx.S
@@ -30,7 +30,6 @@
#define L2_SIZE (8*1024*1024) // L2 8MB
#define CACHE_LINE_SIZE 256
#define PF_DIST_L1 (CACHE_LINE_SIZE * 16) // Prefetch distance L1
-#define rest x2
#define vector_length x9
#if HAVE_AARCH64_SVE_ASM
@@ -89,29 +88,19 @@ ENTRY (MEMSET)
.p2align 4
L(vl_agnostic): // VL Agnostic
- mov rest, count
mov dst, dstin
- add dstend, dstin, count
- // if rest >= L2_SIZE && vector_length == 64 then L(L2)
- mov tmp1, 64
- cmp rest, L2_SIZE
- ccmp vector_length, tmp1, 0, cs
- b.eq L(L2)
- // if rest >= L1_SIZE && vector_length == 64 then L(L1_prefetch)
- cmp rest, L1_SIZE
- ccmp vector_length, tmp1, 0, cs
- b.eq L(L1_prefetch)
-
+ cmp count, L1_SIZE
+ b.hi L(L1_prefetch)
+ // count >= 8 * vector_length
L(unroll8):
- lsl tmp1, vector_length, 3
- .p2align 3
-1: cmp rest, tmp1
- b.cc L(last)
- st1b_unroll
+ sub count, count, tmp1
+ .p2align 4
+1: st1b_unroll 0, 7
add dst, dst, tmp1
- sub rest, rest, tmp1
- b 1b
+ subs count, count, tmp1
+ b.hi 1b
+ add count, count, tmp1
L(last):
cmp count, vector_length, lsl 1
@@ -129,18 +118,22 @@ L(last):
st1b z0.b, p0, [dstend, -1, mul vl]
ret
-L(L1_prefetch): // if rest >= L1_SIZE
+ // count >= L1_SIZE
.p2align 3
+L(L1_prefetch):
+ cmp count, L2_SIZE
+ b.hs L(L2)
+ cmp vector_length, 64
+ b.ne L(unroll8)
1: st1b_unroll 0, 3
prfm pstl1keep, [dst, PF_DIST_L1]
st1b_unroll 4, 7
prfm pstl1keep, [dst, PF_DIST_L1 + CACHE_LINE_SIZE]
add dst, dst, CACHE_LINE_SIZE * 2
- sub rest, rest, CACHE_LINE_SIZE * 2
- cmp rest, L1_SIZE
- b.ge 1b
- cbnz rest, L(unroll8)
- ret
+ sub count, count, CACHE_LINE_SIZE * 2
+ cmp count, PF_DIST_L1
+ b.hs 1b
+ b L(unroll8)
// count >= L2_SIZE
.p2align 3
--
1.8.3.1

39
AArch64-Update-A64FX-memset-not-to-degrade-at-16KB.patch
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@ -1,39 +0,0 @@
From 23777232c23f80809613bdfa329f63aadf992922 Mon Sep 17 00:00:00 2001
From: Naohiro Tamura via Libc-alpha <libc-alpha@sourceware.org>
Date: Fri, 27 Aug 2021 05:03:04 +0000
Subject: [PATCH] AArch64: Update A64FX memset not to degrade at 16KB
This patch updates unroll8 code so as not to degrade at the peak
performance 16KB for both FX1000 and FX700.
Inserted 2 instructions at the beginning of the unroll8 loop,
cmp and branch, are a workaround that is found heuristically.
Reviewed-by: Wilco Dijkstra <Wilco.Dijkstra@arm.com>
---
sysdeps/aarch64/multiarch/memset_a64fx.S | 9 ++++++++-
1 file changed, 8 insertions(+), 1 deletion(-)
diff --git a/sysdeps/aarch64/multiarch/memset_a64fx.S b/sysdeps/aarch64/multiarch/memset_a64fx.S
index 7bf759b..f7dfdaa 100644
--- a/sysdeps/aarch64/multiarch/memset_a64fx.S
+++ b/sysdeps/aarch64/multiarch/memset_a64fx.S
@@ -96,7 +96,14 @@ L(vl_agnostic): // VL Agnostic
L(unroll8):
sub count, count, tmp1
.p2align 4
-1: st1b_unroll 0, 7
+ // The 2 instructions at the beginning of the following loop,
+ // cmp and branch, are a workaround so as not to degrade at
+ // the peak performance 16KB.
+ // It is found heuristically and the branch condition, b.ne,
+ // is chosen intentionally never to jump.
+1: cmp xzr, xzr
+ b.ne 1b
+ st1b_unroll 0, 7
add dst, dst, tmp1
subs count, count, tmp1
b.hi 1b
--
1.8.3.1

34
Avoid-warning-overriding-recipe-for-.-tst-ro-dynamic.patch
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@ -1,34 +0,0 @@
From 15e6d6785ac2935bb963506b47a37b3d1f728952 Mon Sep 17 00:00:00 2001
From: "H.J. Lu" <hjl.tools@gmail.com>
Date: Fri, 24 Sep 2021 08:56:42 -0700
Subject: [PATCH] Avoid warning: overriding recipe for
.../tst-ro-dynamic-mod.so
Add tst-ro-dynamic-mod to modules-names-nobuild to avoid
../Makerules:767: warning: ignoring old recipe for target '.../elf/tst-ro-dynamic-mod.so'
This updates BZ #28340 fix.
---
elf/Makefile | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/elf/Makefile b/elf/Makefile
index 0cdccaa..26986c0 100644
--- a/elf/Makefile
+++ b/elf/Makefile
@@ -402,8 +402,9 @@ endif
modules-execstack-yes = tst-execstack-mod
extra-test-objs += $(addsuffix .os,$(strip $(modules-names)))
-# filtmod1.so, tst-big-note-lib.so have special rules.
-modules-names-nobuild := filtmod1 tst-big-note-lib
+# filtmod1.so, tst-big-note-lib.so, tst-ro-dynamic-mod.so have special
+# rules.
+modules-names-nobuild := filtmod1 tst-big-note-lib tst-ro-dynamic-mod
tests += $(tests-static)
--
1.8.3.1

37
Do-not-define-tgmath.h-fmaxmag-fminmag-macros-for-C2.patch
View File

@ -1,37 +0,0 @@
From 79850e1025aabeccd3586c32ca259aa854607582 Mon Sep 17 00:00:00 2001
From: Joseph Myers <joseph@codesourcery.com>
Date: Wed, 29 Sep 2021 17:38:32 +0000
Subject: [PATCH] Do not define tgmath.h fmaxmag, fminmag macros for C2X (bug
28397)
C2X does not include fmaxmag and fminmag. When I updated feature test
macro handling accordingly (commit
858045ad1c5ac1682288bbcb3676632b97a21ddf, "Update floating-point
feature test macro handling for C2X", included in 2.34), I missed
updating tgmath.h so it doesn't define the corresponding type-generic
macros unless __STDC_WANT_IEC_60559_BFP_EXT__ is defined; I've now
reported this as bug 28397. Adjust the conditionals in tgmath.h
accordingly.
Tested for x86_64.
---
math/tgmath.h | 2 ++
1 file changed, 2 insertions(+)
diff --git a/math/tgmath.h b/math/tgmath.h
index 9868353..3d7b099 100644
--- a/math/tgmath.h
+++ b/math/tgmath.h
@@ -921,7 +921,9 @@
/* Like ilogb, but returning long int. */
# define llogb(Val) __TGMATH_UNARY_REAL_RET_ONLY (Val, llogb)
+#endif
+#if __GLIBC_USE (IEC_60559_BFP_EXT)
/* Return value with maximum magnitude. */
# define fmaxmag(Val1, Val2) __TGMATH_BINARY_REAL_ONLY (Val1, Val2, fmaxmag)
--
1.8.3.1

37
Fix-failing-nss-tst-nss-files-hosts-long-with-local-.patch
View File

@ -1,37 +0,0 @@
From ae925404a10bf0ea63d6e8d41e3821f68b4d776c Mon Sep 17 00:00:00 2001
From: Aurelien Jarno <aurelien@aurel32.net>
Date: Fri, 3 Sep 2021 00:28:14 +0200
Subject: [PATCH] Fix failing nss/tst-nss-files-hosts-long with local resolver
When a local resolver like unbound is listening on the IPv4 loopback
address 127.0.0.1, the nss/tst-nss-files-hosts-long test fails. This is
due to:
- the default resolver in the absence of resolv.conf being 127.0.0.1
- the default DNS NSS database configuration in the absence of
nsswitch.conf being 'hosts: dns [!UNAVAIL=return] file'
This causes the requests for 'test4' and 'test6' to first be sent to the
local resolver, which responds with NXDOMAIN in the likely case those
records do no exist. In turn that causes the access to /etc/hosts to be
skipped, which is the purpose of that test.
Fix that by providing a simple nsswitch.conf file forcing access to
/etc/hosts for that test. I have tested that the only changed result in
the testsuite is that test.
(cherry picked from commit 2738480a4b0866723fb8c633f36bdd34a8767581)
---
nss/tst-nss-files-hosts-long.root/etc/nsswitch.conf | 1 +
1 file changed, 1 insertion(+)
create mode 100644 nss/tst-nss-files-hosts-long.root/etc/nsswitch.conf
diff --git a/nss/tst-nss-files-hosts-long.root/etc/nsswitch.conf b/nss/tst-nss-files-hosts-long.root/etc/nsswitch.conf
new file mode 100644
index 0000000..5b0c6a4
--- /dev/null
+++ b/nss/tst-nss-files-hosts-long.root/etc/nsswitch.conf
@@ -0,0 +1 @@
+hosts: files
--
1.8.3.1

72
Linux-Fix-fcntl-ioctl-prctl-redirects-for-_TIME_BITS.patch
View File

@ -1,72 +0,0 @@
From c87fcacc50505d550f1bb038382bcc7ea73a5926 Mon Sep 17 00:00:00 2001
From: Florian Weimer <fweimer@redhat.com>
Date: Fri, 6 Aug 2021 09:51:38 +0200
Subject: [PATCH] Linux: Fix fcntl, ioctl, prctl redirects for _TIME_BITS=64
(bug 28182)
__REDIRECT and __THROW are not compatible with C++ due to the ordering of the
__asm__ alias and the throw specifier. __REDIRECT_NTH has to be used
instead.
Fixes commit 8a40aff86ba5f64a3a84883e539cb67b ("io: Add time64 alias
for fcntl"), commit 82c395d91ea4f69120d453aeec398e30 ("misc: Add
time64 alias for ioctl"), commit b39ffab860cd743a82c91946619f1b8158
("Linux: Add time64 alias for prctl").
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
---
io/fcntl.h | 8 ++++----
misc/sys/ioctl.h | 4 ++--
sysdeps/unix/sysv/linux/sys/prctl.h | 2 +-
3 files changed, 7 insertions(+), 7 deletions(-)
diff --git a/io/fcntl.h b/io/fcntl.h
index 8917a73..1c96f98 100644
--- a/io/fcntl.h
+++ b/io/fcntl.h
@@ -187,10 +187,10 @@ extern int fcntl64 (int __fd, int __cmd, ...);
# endif
#else /* __USE_TIME_BITS64 */
# ifdef __REDIRECT
-extern int __REDIRECT (fcntl, (int __fd, int __request, ...),
- __fcntl_time64) __THROW;
-extern int __REDIRECT (fcntl64, (int __fd, int __request, ...),
- __fcntl_time64) __THROW;
+extern int __REDIRECT_NTH (fcntl, (int __fd, int __request, ...),
+ __fcntl_time64);
+extern int __REDIRECT_NTH (fcntl64, (int __fd, int __request, ...),
+ __fcntl_time64);
# else
extern int __fcntl_time64 (int __fd, int __request, ...) __THROW;
# define fcntl64 __fcntl_time64
diff --git a/misc/sys/ioctl.h b/misc/sys/ioctl.h
index 6884d99..9945c1e 100644
--- a/misc/sys/ioctl.h
+++ b/misc/sys/ioctl.h
@@ -42,8 +42,8 @@ __BEGIN_DECLS
extern int ioctl (int __fd, unsigned long int __request, ...) __THROW;
#else
# ifdef __REDIRECT
-extern int __REDIRECT (ioctl, (int __fd, unsigned long int __request, ...),
- __ioctl_time64) __THROW;
+extern int __REDIRECT_NTH (ioctl, (int __fd, unsigned long int __request, ...),
+ __ioctl_time64);
# else
extern int __ioctl_time64 (int __fd, unsigned long int __request, ...) __THROW;
# define ioctl __ioctl_time64
diff --git a/sysdeps/unix/sysv/linux/sys/prctl.h b/sysdeps/unix/sysv/linux/sys/prctl.h
index db88938..f0e0d2f 100644
--- a/sysdeps/unix/sysv/linux/sys/prctl.h
+++ b/sysdeps/unix/sysv/linux/sys/prctl.h
@@ -42,7 +42,7 @@ __BEGIN_DECLS
extern int prctl (int __option, ...) __THROW;
#else
# ifdef __REDIRECT
-extern int __REDIRECT (prctl, (int __option, ...), __prctl_time64) __THROW;
+extern int __REDIRECT_NTH (prctl, (int __option, ...), __prctl_time64);
# else
extern int __prctl_time64 (int __option,d ...) __THROW;
# define ioctl __prctl_time64
--
1.8.3.1

241
Linux-Simplify-__opensock-and-fix-race-condition-BZ-.patch
View File

@ -1,241 +0,0 @@
From 5bf07e1b3a74232bfb8332275110be1a5da50f83 Mon Sep 17 00:00:00 2001
From: Florian Weimer <fweimer@redhat.com>
Date: Tue, 28 Sep 2021 18:55:49 +0200
Subject: [PATCH] Linux: Simplify __opensock and fix race condition [BZ #28353]
AF_NETLINK support is not quite optional on modern Linux systems
anymore, so it is likely that the first attempt will always succeed.
Consequently, there is no need to cache the result. Keep AF_UNIX
and the Internet address families as a fallback, for the rare case
that AF_NETLINK is missing. The other address families previously
probed are totally obsolete be now, so remove them.
Use this simplified version as the generic implementation, disabling
Netlink support as needed.
---
socket/opensock.c | 65 +++++---------
sysdeps/unix/sysv/linux/opensock.c | 114 ------------------------
sysdeps/unix/sysv/linux/s390/opensock.c | 2 -
3 files changed, 22 insertions(+), 159 deletions(-)
delete mode 100644 sysdeps/unix/sysv/linux/opensock.c
delete mode 100644 sysdeps/unix/sysv/linux/s390/opensock.c
diff --git a/socket/opensock.c b/socket/opensock.c
index 37148d4743..ff94d27a61 100644
--- a/socket/opensock.c
+++ b/socket/opensock.c
@@ -1,4 +1,5 @@
-/* Copyright (C) 1999-2021 Free Software Foundation, Inc.
+/* Create socket with an unspecified address family for use with ioctl.
+ Copyright (C) 1999-2021 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
@@ -15,56 +16,34 @@
License along with the GNU C Library; if not, see
<https://www.gnu.org/licenses/>. */
-#include <stdio.h>
+#include <errno.h>
#include <sys/socket.h>
-#include <libc-lock.h>
/* Return a socket of any type. The socket can be used in subsequent
ioctl calls to talk to the kernel. */
int
__opensock (void)
{
- /* Cache the last AF that worked, to avoid many redundant calls to
- socket(). */
- static int sock_af = -1;
- int fd = -1;
- __libc_lock_define_initialized (static, lock);
-
- if (sock_af != -1)
- {
- fd = __socket (sock_af, SOCK_DGRAM, 0);
- if (fd != -1)
- return fd;
- }
-
- __libc_lock_lock (lock);
-
- if (sock_af != -1)
- fd = __socket (sock_af, SOCK_DGRAM, 0);
-
- if (fd == -1)
- {
-#ifdef AF_INET
- fd = __socket (sock_af = AF_INET, SOCK_DGRAM, 0);
-#endif
-#ifdef AF_INET6
- if (fd < 0)
- fd = __socket (sock_af = AF_INET6, SOCK_DGRAM, 0);
-#endif
-#ifdef AF_IPX
- if (fd < 0)
- fd = __socket (sock_af = AF_IPX, SOCK_DGRAM, 0);
-#endif
-#ifdef AF_AX25
- if (fd < 0)
- fd = __socket (sock_af = AF_AX25, SOCK_DGRAM, 0);
-#endif
-#ifdef AF_APPLETALK
- if (fd < 0)
- fd = __socket (sock_af = AF_APPLETALK, SOCK_DGRAM, 0);
+ /* SOCK_DGRAM is supported by all address families. (Netlink does
+ not support SOCK_STREAM.) */
+ int type = SOCK_DGRAM | SOCK_CLOEXEC;
+ int fd;
+
+#ifdef AF_NETLINK
+ fd = __socket (AF_NETLINK, type, 0);
+ if (fd >= 0)
+ return fd;
#endif
- }
- __libc_lock_unlock (lock);
+ fd = __socket (AF_UNIX, type, 0);
+ if (fd >= 0)
+ return fd;
+ fd = __socket (AF_INET, type, 0);
+ if (fd >= 0)
+ return fd;
+ fd = __socket (AF_INET6, type, 0);
+ if (fd >= 0)
+ return fd;
+ __set_errno (ENOENT);
return fd;
}
diff --git a/sysdeps/unix/sysv/linux/opensock.c b/sysdeps/unix/sysv/linux/opensock.c
deleted file mode 100644
index e87d6e58b0..0000000000
--- a/sysdeps/unix/sysv/linux/opensock.c
+++ /dev/null
@@ -1,114 +0,0 @@
-/* Copyright (C) 1999-2021 Free Software Foundation, Inc.
- This file is part of the GNU C Library.
-
- The GNU C Library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Lesser General Public
- License as published by the Free Software Foundation; either
- version 2.1 of the License, or (at your option) any later version.
-
- The GNU C Library is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Lesser General Public License for more details.
-
- You should have received a copy of the GNU Lesser General Public
- License along with the GNU C Library; if not, see
- <https://www.gnu.org/licenses/>. */
-
-#include <assert.h>
-#include <errno.h>
-#include <stdio.h>
-#include <string.h>
-#include <unistd.h>
-#include <sys/socket.h>
-
-/* Return a socket of any type. The socket can be used in subsequent
- ioctl calls to talk to the kernel. */
-int
-__opensock (void)
-{
- static int last_family; /* Available socket family we will use. */
- static int last_type;
- static const struct
- {
- int family;
- const char procname[15];
- } afs[] =
- {
- { AF_UNIX, "net/unix" },
- { AF_INET, "" },
- { AF_INET6, "net/if_inet6" },
- { AF_AX25, "net/ax25" },
- { AF_NETROM, "net/nr" },
- { AF_ROSE, "net/rose" },
- { AF_IPX, "net/ipx" },
- { AF_APPLETALK, "net/appletalk" },
- { AF_ECONET, "sys/net/econet" },
- { AF_ASH, "sys/net/ash" },
- { AF_X25, "net/x25" },
-#ifdef NEED_AF_IUCV
- { AF_IUCV, "net/iucv" }
-#endif
- };
-#define nafs (sizeof (afs) / sizeof (afs[0]))
- char fname[sizeof "/proc/" + 14];
- int result;
- int has_proc;
- size_t cnt;
-
- /* We already know which family to use from the last call. Use it
- again. */
- if (last_family != 0)
- {
- assert (last_type != 0);
-
- result = __socket (last_family, last_type | SOCK_CLOEXEC, 0);
- if (result != -1 || errno != EAFNOSUPPORT)
- /* Maybe the socket type isn't supported anymore (module is
- unloaded). In this case again try to find the type. */
- return result;
-
- /* Reset the values. They seem not valid anymore. */
- last_family = 0;
- last_type = 0;
- }
-
- /* Check whether the /proc filesystem is available. */
- has_proc = __access ("/proc/net", R_OK) != -1;
- strcpy (fname, "/proc/");
-
- /* Iterate over the interface families and find one which is
- available. */
- for (cnt = 0; cnt < nafs; ++cnt)
- {
- int type = SOCK_DGRAM;
-
- if (has_proc && afs[cnt].procname[0] != '\0')
- {
- strcpy (fname + 6, afs[cnt].procname);
- if (__access (fname, R_OK) == -1)
- /* The /proc entry is not available. I.e., we cannot
- create a socket of this type (without loading the
- module). Don't look for it since this might trigger
- loading the module. */
- continue;
- }
-
- if (afs[cnt].family == AF_NETROM || afs[cnt].family == AF_X25)
- type = SOCK_SEQPACKET;
-
- result = __socket (afs[cnt].family, type | SOCK_CLOEXEC, 0);
- if (result != -1)
- {
- /* Found an available family. */
- last_type = type;
- last_family = afs[cnt].family;
- return result;
- }
- }
-
- /* None of the protocol families is available. It is unclear what kind
- of error is returned. ENOENT seems like a reasonable choice. */
- __set_errno (ENOENT);
- return -1;
-}
diff --git a/sysdeps/unix/sysv/linux/s390/opensock.c b/sysdeps/unix/sysv/linux/s390/opensock.c
deleted file mode 100644
index f099d651ff..0000000000
--- a/sysdeps/unix/sysv/linux/s390/opensock.c
+++ /dev/null
@@ -1,2 +0,0 @@
-#define NEED_AF_IUCV 1
-#include "../opensock.c"
--
2.27.0

1810
Remove-sysdeps-tls-macros.h.patch
View File

File diff suppressed because it is too large Load Diff

78
Update-string-test-memmove.c-to-cover-16KB-copy.patch
View File

@ -1,78 +0,0 @@
From c333dcf8d8f9e6e46475d9eff24bd5394b5d3d9e Mon Sep 17 00:00:00 2001
From: "H.J. Lu" <hjl.tools@gmail.com>
Date: Mon, 1 Feb 2021 17:23:12 -0800
Subject: [PATCH] Update string/test-memmove.c to cover 16KB copy
---
string/test-memmove.c | 48 ++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 48 insertions(+)
diff --git a/string/test-memmove.c b/string/test-memmove.c
index b271248..670094c 100644
--- a/string/test-memmove.c
+++ b/string/test-memmove.c
@@ -312,6 +312,50 @@ do_test2 (size_t offset)
munmap ((void *) large_buf, size);
}
+static void
+do_test3 (size_t bytes_move, size_t offset)
+{
+ size_t size = bytes_move * 3;
+ uint32_t *buf;
+
+ buf = mmap (NULL, size, PROT_READ | PROT_WRITE,
+ MAP_PRIVATE | MAP_ANON, -1, 0);
+
+ if (buf == MAP_FAILED)
+ error (EXIT_UNSUPPORTED, errno, "mmap failed");
+
+ size_t arr_size = bytes_move / sizeof (uint32_t);
+ size_t i;
+
+ FOR_EACH_IMPL (impl, 0)
+ {
+ for (i = 0; i < arr_size; i++)
+ buf[i] = (uint32_t) i;
+
+ uint32_t *dst = &buf[arr_size + offset];
+
+#ifdef TEST_BCOPY
+ CALL (impl, (char *) buf, (char *) dst, bytes_move);
+#else
+ CALL (impl, (char *) dst, (char *) buf, bytes_move);
+#endif
+
+ for (i = 0; i < arr_size; i++)
+ {
+ if (dst[i] != (uint32_t) i)
+ {
+ error (0, 0,
+ "Wrong result in function %s dst \"%p\" src \"%p\" offset \"%zd\"",
+ impl->name, dst, buf, i);
+ ret = 1;
+ break;
+ }
+ }
+ }
+
+ munmap ((void *) buf, size);
+}
+
int
test_main (void)
{
@@ -356,6 +400,10 @@ test_main (void)
do_test2 (0x200000);
do_test2 (0x4000000 - 1);
do_test2 (0x4000000);
+
+ /* Copy 16KB data. */
+ do_test3 (16384, 3);
+
return ret;
}
--
1.8.3.1

106
Use-__executable_start-as-the-lowest-address-for-pro.patch
View File

@ -1,106 +0,0 @@
From 84a7eb1f87c1d01b58ad887a0ab5d87abbc1c772 Mon Sep 17 00:00:00 2001
From: "H.J. Lu" <hjl.tools@gmail.com>
Date: Fri, 30 Jul 2021 19:07:30 -0700
Subject: [PATCH] Use __executable_start as the lowest address for profiling
[BZ #28153]
Glibc assumes that ENTRY_POINT is the lowest address for which we need
to keep profiling records and BFD linker uses a linker script to place
the input sections.
Starting from GCC 4.6, the main function is placed in .text.startup
section and starting from binutils 2.22, BFD linker with
commit add44f8d5c5c05e08b11e033127a744d61c26aee
Author: Alan Modra <amodra@gmail.com>
Date: Thu Nov 25 03:03:02 2010 +0000
* scripttempl/elf.sc: Group .text.exit, text.startup and .text.hot
sections.
places .text.startup section before .text section, which leave the main
function out of profiling records.
Starting from binutils 2.15, linker provides __executable_start to mark
the lowest address of the executable. Use __executable_start as the
lowest address to keep the main function in profiling records. This fixes
[BZ #28153].
Tested on Linux/x86-64, Linux/x32 and Linux/i686 as well as with
build-many-glibcs.py.
---
csu/gmon-start.c | 10 +++++++++-
gmon/tst-gmon-gprof.sh | 2 ++
gmon/tst-gmon-static-gprof.sh | 2 ++
3 files changed, 13 insertions(+), 1 deletion(-)
diff --git a/csu/gmon-start.c b/csu/gmon-start.c
index b343288..344606a 100644
--- a/csu/gmon-start.c
+++ b/csu/gmon-start.c
@@ -52,6 +52,11 @@ extern char ENTRY_POINT[];
#endif
extern char etext[];
+/* Use __executable_start as the lowest address to keep profiling records
+ if it provided by the linker. */
+extern const char executable_start[] asm ("__executable_start")
+ __attribute__ ((weak, visibility ("hidden")));
+
#ifndef TEXT_START
# ifdef ENTRY_POINT_DECL
# define TEXT_START ENTRY_POINT
@@ -92,7 +97,10 @@ __gmon_start__ (void)
called = 1;
/* Start keeping profiling records. */
- __monstartup ((u_long) TEXT_START, (u_long) &etext);
+ if (&executable_start != NULL)
+ __monstartup ((u_long) &executable_start, (u_long) &etext);
+ else
+ __monstartup ((u_long) TEXT_START, (u_long) &etext);
/* Call _mcleanup before exiting; it will write out gmon.out from the
collected data. */
diff --git a/gmon/tst-gmon-gprof.sh b/gmon/tst-gmon-gprof.sh
index 9d37158..dc0be02 100644
--- a/gmon/tst-gmon-gprof.sh
+++ b/gmon/tst-gmon-gprof.sh
@@ -39,12 +39,14 @@ trap cleanup 0
cat > "$expected" <<EOF
f1 2000
f2 1000
+f3 1
EOF
# Special version for powerpc with function descriptors.
cat > "$expected_dot" <<EOF
.f1 2000
.f2 1000
+.f3 1
EOF
"$GPROF" -C "$program" "$data" \
diff --git a/gmon/tst-gmon-static-gprof.sh b/gmon/tst-gmon-static-gprof.sh
index 79218df..4cc99c8 100644
--- a/gmon/tst-gmon-static-gprof.sh
+++ b/gmon/tst-gmon-static-gprof.sh
@@ -39,6 +39,7 @@ trap cleanup 0
cat > "$expected" <<EOF
f1 2000
f2 1000
+f3 1
main 1
EOF
@@ -46,6 +47,7 @@ EOF
cat > "$expected_dot" <<EOF
.f1 2000
.f2 1000
+.f3 1
.main 1
EOF
--
1.8.3.1

212
Use-support_open_dev_null_range-io-tst-closefrom-mis.patch
View File

@ -1,212 +0,0 @@
From 772e33411bc730f832f415f93eb3e7c67e4d5488 Mon Sep 17 00:00:00 2001
From: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Date: Tue, 24 Aug 2021 16:15:50 -0300
Subject: [PATCH] Use support_open_dev_null_range io/tst-closefrom,
misc/tst-close_range, and posix/tst-spawn5 (BZ #28260)
It ensures a continuous range of file descriptor and avoid hitting
the RLIMIT_NOFILE.
Checked on x86_64-linux-gnu.
(cherry picked from commit 6b20880b22d1d0fce7e9f506baa6fe2d5c7fcfdc)
---
io/tst-closefrom.c | 21 ++++++---------------
posix/tst-spawn5.c | 13 +------------
sysdeps/unix/sysv/linux/tst-close_range.c | 31 ++++++++++---------------------
3 files changed, 17 insertions(+), 48 deletions(-)
diff --git a/io/tst-closefrom.c b/io/tst-closefrom.c
index d4c1870..395ec0d 100644
--- a/io/tst-closefrom.c
+++ b/io/tst-closefrom.c
@@ -24,31 +24,22 @@
#include <support/check.h>
#include <support/descriptors.h>
#include <support/xunistd.h>
+#include <support/support.h>
#include <array_length.h>
#define NFDS 100
static int
-open_multiple_temp_files (void)
-{
- /* Check if the temporary file descriptor has no no gaps. */
- int lowfd = xopen ("/dev/null", O_RDONLY, 0600);
- for (int i = 1; i <= NFDS; i++)
- TEST_COMPARE (xopen ("/dev/null", O_RDONLY, 0600), lowfd + i);
- return lowfd;
-}
-
-static int
closefrom_test (void)
{
struct support_descriptors *descrs = support_descriptors_list ();
- int lowfd = open_multiple_temp_files ();
+ int lowfd = support_open_dev_null_range (NFDS, O_RDONLY, 0600);
- const int maximum_fd = lowfd + NFDS;
+ const int maximum_fd = lowfd + NFDS - 1;
const int half_fd = lowfd + NFDS / 2;
- const int gap = maximum_fd / 4;
+ const int gap = lowfd + NFDS / 4;
/* Close half of the descriptors and check result. */
closefrom (half_fd);
@@ -58,7 +49,7 @@ closefrom_test (void)
TEST_COMPARE (fcntl (i, F_GETFL), -1);
TEST_COMPARE (errno, EBADF);
}
- for (int i = 0; i < half_fd; i++)
+ for (int i = lowfd; i < half_fd; i++)
TEST_VERIFY (fcntl (i, F_GETFL) > -1);
/* Create some gaps, close up to a threshold, and check result. */
@@ -74,7 +65,7 @@ closefrom_test (void)
TEST_COMPARE (fcntl (i, F_GETFL), -1);
TEST_COMPARE (errno, EBADF);
}
- for (int i = 0; i < gap; i++)
+ for (int i = lowfd; i < gap; i++)
TEST_VERIFY (fcntl (i, F_GETFL) > -1);
/* Close the remmaining but the last one. */
diff --git a/posix/tst-spawn5.c b/posix/tst-spawn5.c
index ac66738..a95199a 100644
--- a/posix/tst-spawn5.c
+++ b/posix/tst-spawn5.c
@@ -48,17 +48,6 @@ static int initial_argv_count;
#define NFDS 100
static int
-open_multiple_temp_files (void)
-{
- /* Check if the temporary file descriptor has no no gaps. */
- int lowfd = xopen ("/dev/null", O_RDONLY, 0600);
- for (int i = 1; i <= NFDS; i++)
- TEST_COMPARE (xopen ("/dev/null", O_RDONLY, 0600),
- lowfd + i);
- return lowfd;
-}
-
-static int
parse_fd (const char *str)
{
char *endptr;
@@ -185,7 +174,7 @@ spawn_closefrom_test (posix_spawn_file_actions_t *fa, int lowfd, int highfd,
static void
do_test_closefrom (void)
{
- int lowfd = open_multiple_temp_files ();
+ int lowfd = support_open_dev_null_range (NFDS, O_RDONLY, 0600);
const int half_fd = lowfd + NFDS / 2;
/* Close half of the descriptors and check result. */
diff --git a/sysdeps/unix/sysv/linux/tst-close_range.c b/sysdeps/unix/sysv/linux/tst-close_range.c
index dccb618..f5069d1 100644
--- a/sysdeps/unix/sysv/linux/tst-close_range.c
+++ b/sysdeps/unix/sysv/linux/tst-close_range.c
@@ -36,23 +36,12 @@
#define NFDS 100
-static int
-open_multiple_temp_files (void)
-{
- /* Check if the temporary file descriptor has no no gaps. */
- int lowfd = xopen ("/dev/null", O_RDONLY, 0600);
- for (int i = 1; i <= NFDS; i++)
- TEST_COMPARE (xopen ("/dev/null", O_RDONLY, 0600),
- lowfd + i);
- return lowfd;
-}
-
static void
close_range_test_max_upper_limit (void)
{
struct support_descriptors *descrs = support_descriptors_list ();
- int lowfd = open_multiple_temp_files ();
+ int lowfd = support_open_dev_null_range (NFDS, O_RDONLY, 0600);
{
int r = close_range (lowfd, ~0U, 0);
@@ -68,7 +57,7 @@ close_range_test_max_upper_limit (void)
static void
close_range_test_common (int lowfd, unsigned int flags)
{
- const int maximum_fd = lowfd + NFDS;
+ const int maximum_fd = lowfd + NFDS - 1;
const int half_fd = lowfd + NFDS / 2;
const int gap_1 = maximum_fd - 8;
@@ -121,7 +110,7 @@ close_range_test (void)
struct support_descriptors *descrs = support_descriptors_list ();
/* Check if the temporary file descriptor has no no gaps. */
- int lowfd = open_multiple_temp_files ();
+ int lowfd = support_open_dev_null_range (NFDS, O_RDONLY, 0600);
close_range_test_common (lowfd, 0);
@@ -146,7 +135,7 @@ close_range_test_subprocess (void)
struct support_descriptors *descrs = support_descriptors_list ();
/* Check if the temporary file descriptor has no no gaps. */
- int lowfd = open_multiple_temp_files ();
+ int lowfd = support_open_dev_null_range (NFDS, O_RDONLY, 0600);
struct support_stack stack = support_stack_alloc (4096);
@@ -184,7 +173,7 @@ close_range_unshare_test (void)
struct support_descriptors *descrs1 = support_descriptors_list ();
/* Check if the temporary file descriptor has no no gaps. */
- int lowfd = open_multiple_temp_files ();
+ int lowfd = support_open_dev_null_range (NFDS, O_RDONLY, 0600);
struct support_descriptors *descrs2 = support_descriptors_list ();
@@ -200,7 +189,7 @@ close_range_unshare_test (void)
support_stack_free (&stack);
- for (int i = 0; i < NFDS; i++)
+ for (int i = lowfd; i < lowfd + NFDS; i++)
TEST_VERIFY (fcntl (i, F_GETFL) > -1);
support_descriptors_check (descrs2);
@@ -226,9 +215,9 @@ static void
close_range_cloexec_test (void)
{
/* Check if the temporary file descriptor has no no gaps. */
- const int lowfd = open_multiple_temp_files ();
+ int lowfd = support_open_dev_null_range (NFDS, O_RDONLY, 0600);
- const int maximum_fd = lowfd + NFDS;
+ const int maximum_fd = lowfd + NFDS - 1;
const int half_fd = lowfd + NFDS / 2;
const int gap_1 = maximum_fd - 8;
@@ -251,13 +240,13 @@ close_range_cloexec_test (void)
/* Create some gaps, close up to a threshold, and check result. */
static int gap_close[] = { 57, 78, 81, 82, 84, 90 };
for (int i = 0; i < array_length (gap_close); i++)
- xclose (gap_close[i]);
+ xclose (lowfd + gap_close[i]);
TEST_COMPARE (close_range (half_fd + 1, gap_1, CLOSE_RANGE_CLOEXEC), 0);
for (int i = half_fd + 1; i < gap_1; i++)
{
int flags = fcntl (i, F_GETFD);
- if (is_in_array (gap_close, array_length (gap_close), i))
+ if (is_in_array (gap_close, array_length (gap_close), i - lowfd))
TEST_COMPARE (flags, -1);
else
{
--
1.8.3.1

72
aarch64-Make-elf_machine_-load_address-dynamic-robus.patch
View File

@ -1,72 +0,0 @@
From 43d06ed218fc8be58987bdfd00e21e5720f0b862 Mon Sep 17 00:00:00 2001
From: Fangrui Song <maskray@google.com>
Date: Wed, 11 Aug 2021 09:00:37 -0700
Subject: [PATCH] aarch64: Make elf_machine_{load_address,dynamic} robust [BZ
#28203]
The AArch64 ABI is largely platform agnostic and does not specify
_GLOBAL_OFFSET_TABLE_[0] ([1]). glibc ld.so turns out to be probably the
only user of _GLOBAL_OFFSET_TABLE_[0] and GNU ld defines the value
to the link-time address _DYNAMIC. [2]
In 2012, __ehdr_start was implemented in GNU ld and gold in binutils
2.23. Using adrp+add / (-mcmodel=tiny) adr to access
__ehdr_start/_DYNAMIC gives us a robust way to get the load address and
the link-time address of _DYNAMIC.
[1]: From a psABI maintainer, https://bugs.llvm.org/show_bug.cgi?id=49672#c2
[2]: LLD's aarch64 port does not set _GLOBAL_OFFSET_TABLE_[0] to the
link-time address _DYNAMIC.
LLD is widely used on aarch64 Android and ChromeOS devices. Software
just works without the need for _GLOBAL_OFFSET_TABLE_[0].
Reviewed-by: Szabolcs Nagy <szabolcs.nagy@arm.com>
---
sysdeps/aarch64/dl-machine.h | 24 +++++++++---------------
1 file changed, 9 insertions(+), 15 deletions(-)
diff --git a/sysdeps/aarch64/dl-machine.h b/sysdeps/aarch64/dl-machine.h
index d29d827..3e10cb4 100644
--- a/sysdeps/aarch64/dl-machine.h
+++ b/sysdeps/aarch64/dl-machine.h
@@ -37,28 +37,22 @@ elf_machine_matches_host (const ElfW(Ehdr) *ehdr)
return ehdr->e_machine == EM_AARCH64;
}
-/* Return the link-time address of _DYNAMIC. Conveniently, this is the
- first element of the GOT. */
-static inline ElfW(Addr) __attribute__ ((unused))
-elf_machine_dynamic (void)
-{
- extern const ElfW(Addr) _GLOBAL_OFFSET_TABLE_[] attribute_hidden;
- return _GLOBAL_OFFSET_TABLE_[0];
-}
-
/* Return the run-time load address of the shared object. */
static inline ElfW(Addr) __attribute__ ((unused))
elf_machine_load_address (void)
{
- /* To figure out the load address we use the definition that for any symbol:
- dynamic_addr(symbol) = static_addr(symbol) + load_addr
+ extern const ElfW(Ehdr) __ehdr_start attribute_hidden;
+ return (ElfW(Addr)) &__ehdr_start;
+}
- _DYNAMIC sysmbol is used here as its link-time address stored in
- the special unrelocated first GOT entry. */
+/* Return the link-time address of _DYNAMIC. */
- extern ElfW(Dyn) _DYNAMIC[] attribute_hidden;
- return (ElfW(Addr)) &_DYNAMIC - elf_machine_dynamic ();
+static inline ElfW(Addr) __attribute__ ((unused))
+elf_machine_dynamic (void)
+{
+ extern ElfW(Dyn) _DYNAMIC[] attribute_hidden;
+ return (ElfW(Addr)) _DYNAMIC - elf_machine_load_address ();
}
/* Set up the loaded object described by L so its unrelocated PLT
--
1.8.3.1

82
arm-Simplify-elf_machine_-load_address-dynamic.patch
View File

@ -1,82 +0,0 @@
From bca0f5cbc9257c13322b99e55235c4f21ba0bd82 Mon Sep 17 00:00:00 2001
From: Fangrui Song <maskray@google.com>
Date: Wed, 18 Aug 2021 11:13:03 -0700
Subject: [PATCH] arm: Simplify elf_machine_{load_address,dynamic}
and drop reliance on _GLOBAL_OFFSET_TABLE_[0] being the link-time
address of _DYNAMIC. &__ehdr_start is a better way to get the load address.
This is similar to commits b37b75d269883a2c553bb7019a813094eb4e2dd1
(x86-64) and 43d06ed218fc8be58987bdfd00e21e5720f0b862 (aarch64).
Reviewed-by: Joseph Myers <joseph@codesourcery.com>
---
sysdeps/arm/dl-machine.h | 47 ++++++++++-------------------------------------
1 file changed, 10 insertions(+), 37 deletions(-)
diff --git a/sysdeps/arm/dl-machine.h b/sysdeps/arm/dl-machine.h
index ff5e09e..eb13cb8 100644
--- a/sysdeps/arm/dl-machine.h
+++ b/sysdeps/arm/dl-machine.h
@@ -37,48 +37,21 @@ elf_machine_matches_host (const Elf32_Ehdr *ehdr)
return ehdr->e_machine == EM_ARM;
}
-
-/* Return the link-time address of _DYNAMIC. Conveniently, this is the
- first element of the GOT. */
-static inline Elf32_Addr __attribute__ ((unused))
-elf_machine_dynamic (void)
-{
- /* Declaring this hidden ensures that a PC-relative reference is used. */
- extern const Elf32_Addr _GLOBAL_OFFSET_TABLE_[] attribute_hidden;
- return _GLOBAL_OFFSET_TABLE_[0];
-}
-
-
/* Return the run-time load address of the shared object. */
-static inline Elf32_Addr __attribute__ ((unused))
+static inline ElfW(Addr) __attribute__ ((unused))
elf_machine_load_address (void)
{
- Elf32_Addr pcrel_addr;
-#ifdef SHARED
- extern Elf32_Addr __dl_start (void *) asm ("_dl_start");
- Elf32_Addr got_addr = (Elf32_Addr) &__dl_start;
- asm ("adr %0, _dl_start" : "=r" (pcrel_addr));
-#else
- extern Elf32_Addr __dl_relocate_static_pie (void *)
- asm ("_dl_relocate_static_pie") attribute_hidden;
- Elf32_Addr got_addr = (Elf32_Addr) &__dl_relocate_static_pie;
- asm ("adr %0, _dl_relocate_static_pie" : "=r" (pcrel_addr));
-#endif
-#ifdef __thumb__
- /* Clear the low bit of the function address.
-
- NOTE: got_addr is from GOT table whose lsb is always set by linker if it's
- Thumb function address. PCREL_ADDR comes from PC-relative calculation
- which will finish during assembling. GAS assembler before the fix for
- PR gas/21458 was not setting the lsb but does after that. Always do the
- strip for both, so the code works with various combinations of glibc and
- Binutils. */
- got_addr &= ~(Elf32_Addr) 1;
- pcrel_addr &= ~(Elf32_Addr) 1;
-#endif
- return pcrel_addr - got_addr;
+ extern const ElfW(Ehdr) __ehdr_start attribute_hidden;
+ return (ElfW(Addr)) &__ehdr_start;
}
+/* Return the link-time address of _DYNAMIC. */
+static inline ElfW(Addr) __attribute__ ((unused))
+elf_machine_dynamic (void)
+{
+ extern ElfW(Dyn) _DYNAMIC[] attribute_hidden;
+ return (ElfW(Addr)) _DYNAMIC - elf_machine_load_address ();
+}
/* Set up the loaded object described by L so its unrelocated PLT
entries will jump to the on-demand fixup code in dl-runtime.c. */
--
1.8.3.1

146
backport-CVE-2021-38604-0001-librt-add-test-bug-28213.patch
View File

@ -1,146 +0,0 @@
From 4cc79c217744743077bf7a0ec5e0a4318f1e6641 Mon Sep 17 00:00:00 2001
From: Nikita Popov <npv1310@gmail.com>
Date: Thu, 12 Aug 2021 16:09:50 +0530
Subject: [PATCH] librt: add test (bug 28213)
This test implements following logic:
1) Create POSIX message queue.
Register a notification with mq_notify (using NULL attributes).
Then immediately unregister the notification with mq_notify.
Helper thread in a vulnerable version of glibc
should cause NULL pointer dereference after these steps.
2) Once again, register the same notification.
Try to send a dummy message.
Test is considered successfulif the dummy message
is successfully received by the callback function.
Signed-off-by: Nikita Popov <npv1310@gmail.com>
Reviewed-by: Siddhesh Poyarekar <siddhesh@sourceware.org>
---
rt/Makefile | 1 +
rt/tst-bz28213.c | 101 +++++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 102 insertions(+)
create mode 100644 rt/tst-bz28213.c
diff --git a/rt/Makefile b/rt/Makefile
index 113cea03a5..910e775995 100644
--- a/rt/Makefile
+++ b/rt/Makefile
@@ -74,6 +74,7 @@ tests := tst-shm tst-timer tst-timer2 \
tst-aio7 tst-aio8 tst-aio9 tst-aio10 \
tst-mqueue1 tst-mqueue2 tst-mqueue3 tst-mqueue4 \
tst-mqueue5 tst-mqueue6 tst-mqueue7 tst-mqueue8 tst-mqueue9 \
+ tst-bz28213 \
tst-timer3 tst-timer4 tst-timer5 \
tst-cpuclock2 tst-cputimer1 tst-cputimer2 tst-cputimer3 \
tst-shm-cancel \
diff --git a/rt/tst-bz28213.c b/rt/tst-bz28213.c
new file mode 100644
index 0000000000..0c096b5a0a
--- /dev/null
+++ b/rt/tst-bz28213.c
@@ -0,0 +1,101 @@
+/* Bug 28213: test for NULL pointer dereference in mq_notify.
+ Copyright (C) The GNU Toolchain Authors.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <https://www.gnu.org/licenses/>. */
+
+#include <errno.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <mqueue.h>
+#include <signal.h>
+#include <stdlib.h>
+#include <string.h>
+#include <support/check.h>
+
+static mqd_t m = -1;
+static const char msg[] = "hello";
+
+static void
+check_bz28213_cb (union sigval sv)
+{
+ char buf[sizeof (msg)];
+
+ (void) sv;
+
+ TEST_VERIFY_EXIT ((size_t) mq_receive (m, buf, sizeof (buf), NULL)
+ == sizeof (buf));
+ TEST_VERIFY_EXIT (memcmp (buf, msg, sizeof (buf)) == 0);
+
+ exit (0);
+}
+
+static void
+check_bz28213 (void)
+{
+ struct sigevent sev;
+
+ memset (&sev, '\0', sizeof (sev));
+ sev.sigev_notify = SIGEV_THREAD;
+ sev.sigev_notify_function = check_bz28213_cb;
+
+ /* Step 1: Register & unregister notifier.
+ Helper thread should receive NOTIFY_REMOVED notification.
+ In a vulnerable version of glibc, NULL pointer dereference follows. */
+ TEST_VERIFY_EXIT (mq_notify (m, &sev) == 0);
+ TEST_VERIFY_EXIT (mq_notify (m, NULL) == 0);
+
+ /* Step 2: Once again, register notification.
+ Try to send one message.
+ Test is considered successful, if the callback does exit (0). */
+ TEST_VERIFY_EXIT (mq_notify (m, &sev) == 0);
+ TEST_VERIFY_EXIT (mq_send (m, msg, sizeof (msg), 1) == 0);
+
+ /* Wait... */
+ pause ();
+}
+
+static int
+do_test (void)
+{
+ static const char m_name[] = "/bz28213_queue";
+ struct mq_attr m_attr;
+
+ memset (&m_attr, '\0', sizeof (m_attr));
+ m_attr.mq_maxmsg = 1;
+ m_attr.mq_msgsize = sizeof (msg);
+
+ m = mq_open (m_name,
+ O_RDWR | O_CREAT | O_EXCL,
+ 0600,
+ &m_attr);
+
+ if (m < 0)
+ {
+ if (errno == ENOSYS)
+ FAIL_UNSUPPORTED ("POSIX message queues are not implemented\n");
+ FAIL_EXIT1 ("Failed to create POSIX message queue: %m\n");
+ }
+
+ TEST_VERIFY_EXIT (mq_unlink (m_name) == 0);
+
+ check_bz28213 ();
+
+ return 0;
+}
+
+#include <support/test-driver.c>
--
2.27.0

39
backport-CVE-2021-38604-0002-librt-fix-NULL-pointer-dereference-bug-28213.patch
View File

@ -1,39 +0,0 @@
From b805aebd42364fe696e417808a700fdb9800c9e8 Mon Sep 17 00:00:00 2001
From: Nikita Popov <npv1310@gmail.com>
Date: Mon, 9 Aug 2021 20:17:34 +0530
Subject: [PATCH] librt: fix NULL pointer dereference (bug 28213)
Helper thread frees copied attribute on NOTIFY_REMOVED message
received from the OS kernel. Unfortunately, it fails to check whether
copied attribute actually exists (data.attr != NULL). This worked
earlier because free() checks passed pointer before actually
attempting to release corresponding memory. But
__pthread_attr_destroy assumes pointer is not NULL.
So passing NULL pointer to __pthread_attr_destroy will result in
segmentation fault. This scenario is possible if
notification->sigev_notify_attributes == NULL (which means default
thread attributes should be used).
Signed-off-by: Nikita Popov <npv1310@gmail.com>
Reviewed-by: Siddhesh Poyarekar <siddhesh@sourceware.org>
---
sysdeps/unix/sysv/linux/mq_notify.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/sysdeps/unix/sysv/linux/mq_notify.c b/sysdeps/unix/sysv/linux/mq_notify.c
index 9799dcdaa4..eccae2e4c6 100644
--- a/sysdeps/unix/sysv/linux/mq_notify.c
+++ b/sysdeps/unix/sysv/linux/mq_notify.c
@@ -131,7 +131,7 @@ helper_thread (void *arg)
to wait until it is done with it. */
(void) __pthread_barrier_wait (&notify_barrier);
}
- else if (data.raw[NOTIFY_COOKIE_LEN - 1] == NOTIFY_REMOVED)
+ else if (data.raw[NOTIFY_COOKIE_LEN - 1] == NOTIFY_REMOVED && data.attr != NULL)
{
/* The only state we keep is the copy of the thread attributes. */
__pthread_attr_destroy (data.attr);
--
2.27.0

28
copy_and_spawn_sgid-Avoid-double-calls-to-close.patch
View File

@ -1,28 +0,0 @@
From 45caed9d67a00af917d8b5b88d4b5eb1225b7aef Mon Sep 17 00:00:00 2001
From: Siddhesh Poyarekar <siddhesh@sourceware.org>
Date: Tue, 3 Aug 2021 21:10:53 +0530
Subject: [PATCH] copy_and_spawn_sgid: Avoid double calls to close()
If close() on infd and outfd succeeded, reset the fd numbers so that
we don't attempt to close them again.
Reviewed-by: Arjun Shankar <arjun@redhat.com>
---
support/support_capture_subprocess.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/support/support_capture_subprocess.c b/support/support_capture_subprocess.c
index 27bfd19..0bacf6d 100644
--- a/support/support_capture_subprocess.c
+++ b/support/support_capture_subprocess.c
@@ -170,6 +170,7 @@ copy_and_spawn_sgid (char *child_id, gid_t gid)
support_subprogram because we only want the program exit status, not the
contents. */
ret = 0;
+ infd = outfd = -1;
char * const args[] = {execname, child_id, NULL};
--
1.8.3.1

60
delete-check-installed-headers-c-and-check-installed.patch
View File

@ -1,60 +0,0 @@
From dd2efa50d197e2205acd8edbf29aba717d71bdbb Mon Sep 17 00:00:00 2001
From: Yang Yanchao <yangyanchao6@huawei.com>
Date: Tue, 4 Jan 2022 19:55:28 +0800
Subject: [PATCH] testsuit: delete check-installed-headers-c and check-installed-headers-cxx
check-installed-headers-c and check-installed-headers-cxx checked at CI
and can be deleted during building
---
Makefile | 4 ++--
Rules | 4 ++--
2 files changed, 4 insertions(+), 4 deletions(-)
diff --git a/Makefile b/Makefile
index f98d5a9e..83200a75 100644
--- a/Makefile
+++ b/Makefile
@@ -532,7 +532,7 @@ $(objpfx)check-local-headers.out: scripts/check-local-headers.sh
ifneq "$(headers)" ""
# Special test of all the installed headers in this directory.
-tests-special += $(objpfx)check-installed-headers-c.out
+# tests-special += $(objpfx)check-installed-headers-c.out
libof-check-installed-headers-c := testsuite
$(objpfx)check-installed-headers-c.out: \
scripts/check-installed-headers.sh $(headers)
@@ -542,7 +541,7 @@ $(objpfx)check-installed-headers-c.out: \
$(evaluate-test)
ifneq "$(CXX)" ""
-tests-special += $(objpfx)check-installed-headers-cxx.out
+# tests-special += $(objpfx)check-installed-headers-cxx.out
libof-check-installed-headers-cxx := testsuite
$(objpfx)check-installed-headers-cxx.out: \
scripts/check-installed-headers.sh $(headers)
diff --git a/Rules b/Rules
index b1137afe..ca29abd7 100644
--- a/Rules
+++ b/Rules
@@ -84,7 +84,7 @@ common-generated += dummy.o dummy.c
ifneq "$(headers)" ""
# Test that all of the headers installed by this directory can be compiled
# in isolation.
-tests-special += $(objpfx)check-installed-headers-c.out
+# tests-special += $(objpfx)check-installed-headers-c.out
libof-check-installed-headers-c := testsuite
$(objpfx)check-installed-headers-c.out: \
$(..)scripts/check-installed-headers.sh $(headers)
@@ -96,7 +95,7 @@ $(objpfx)check-installed-headers-c.out: \
ifneq "$(CXX)" ""
# If a C++ compiler is available, also test that they can be compiled
# in isolation as C++.
-tests-special += $(objpfx)check-installed-headers-cxx.out
+# tests-special += $(objpfx)check-installed-headers-cxx.out
libof-check-installed-headers-cxx := testsuite
$(objpfx)check-installed-headers-cxx.out: \
$(..)scripts/check-installed-headers.sh $(headers)
--
2.27.0

482
elf-Avoid-deadlock-between-pthread_create-and-ctors-.patch
View File

@ -1,482 +0,0 @@
From 83b5323261bb72313bffcf37476c1b8f0847c736 Mon Sep 17 00:00:00 2001
From: Szabolcs Nagy <szabolcs.nagy@arm.com>
Date: Wed, 15 Sep 2021 15:16:19 +0100
Subject: [PATCH] elf: Avoid deadlock between pthread_create and ctors [BZ
#28357]
The fix for bug 19329 caused a regression such that pthread_create can
deadlock when concurrent ctors from dlopen are waiting for it to finish.
Use a new GL(dl_load_tls_lock) in pthread_create that is not taken
around ctors in dlopen.
The new lock is also used in __tls_get_addr instead of GL(dl_load_lock).
The new lock is held in _dl_open_worker and _dl_close_worker around
most of the logic before/after the init/fini routines. When init/fini
routines are running then TLS is in a consistent, usable state.
In _dl_open_worker the new lock requires catching and reraising dlopen
failures that happen in the critical section.
The new lock is reinitialized in a fork child, to keep the existing
behaviour and it is kept recursive in case malloc interposition or TLS
access from signal handlers can retake it. It is not obvious if this
is necessary or helps, but avoids changing the preexisting behaviour.
The new lock may be more appropriate for dl_iterate_phdr too than
GL(dl_load_write_lock), since TLS state of an incompletely loaded
module may be accessed. If the new lock can replace the old one,
that can be a separate change.
Fixes bug 28357.
Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
---
elf/dl-close.c | 6 ++
elf/dl-open.c | 35 +++++++++++-
elf/dl-support.c | 7 +++
elf/dl-tls.c | 16 +++---
elf/rtld.c | 1 +
posix/fork.c | 3 +
sysdeps/generic/ldsodefs.h | 9 ++-
sysdeps/pthread/Makefile | 10 +++-
sysdeps/pthread/tst-create1.c | 119 +++++++++++++++++++++++++++++++++++++++
sysdeps/pthread/tst-create1mod.c | 41 ++++++++++++++
10 files changed, 235 insertions(+), 12 deletions(-)
create mode 100644 sysdeps/pthread/tst-create1.c
create mode 100644 sysdeps/pthread/tst-create1mod.c
diff --git a/elf/dl-close.c b/elf/dl-close.c
index 93ff5c9..cfe0f1c 100644
--- a/elf/dl-close.c
+++ b/elf/dl-close.c
@@ -549,6 +549,9 @@ _dl_close_worker (struct link_map *map, bool force)
size_t tls_free_end;
tls_free_start = tls_free_end = NO_TLS_OFFSET;
+ /* Protects global and module specitic TLS state. */
+ __rtld_lock_lock_recursive (GL(dl_load_tls_lock));
+
/* We modify the list of loaded objects. */
__rtld_lock_lock_recursive (GL(dl_load_write_lock));
@@ -784,6 +787,9 @@ _dl_close_worker (struct link_map *map, bool force)
GL(dl_tls_static_used) = tls_free_start;
}
+ /* TLS is cleaned up for the unloaded modules. */
+ __rtld_lock_unlock_recursive (GL(dl_load_tls_lock));
+
#ifdef SHARED
/* Auditing checkpoint: we have deleted all objects. */
if (__glibc_unlikely (do_audit))
diff --git a/elf/dl-open.c b/elf/dl-open.c
index 5295e93..6ea5dd2 100644
--- a/elf/dl-open.c
+++ b/elf/dl-open.c
@@ -66,6 +66,9 @@ struct dl_open_args
libc_map value in the namespace in case of a dlopen failure. */
bool libc_already_loaded;
+ /* Set to true if the end of dl_open_worker_begin was reached. */
+ bool worker_continue;
+
/* Original parameters to the program and the current environment. */
int argc;
char **argv;
@@ -482,7 +485,7 @@ call_dl_init (void *closure)
}
static void
-dl_open_worker (void *a)
+dl_open_worker_begin (void *a)
{
struct dl_open_args *args = a;
const char *file = args->file;
@@ -774,6 +777,36 @@ dl_open_worker (void *a)
_dl_call_libc_early_init (libc_map, false);
}
+ args->worker_continue = true;
+}
+
+static void
+dl_open_worker (void *a)
+{
+ struct dl_open_args *args = a;
+
+ args->worker_continue = false;
+
+ {
+ /* Protects global and module specific TLS state. */
+ __rtld_lock_lock_recursive (GL(dl_load_tls_lock));
+
+ struct dl_exception ex;
+ int err = _dl_catch_exception (&ex, dl_open_worker_begin, args);
+
+ __rtld_lock_unlock_recursive (GL(dl_load_tls_lock));
+
+ if (__glibc_unlikely (ex.errstring != NULL))
+ /* Reraise the error. */
+ _dl_signal_exception (err, &ex, NULL);
+ }
+
+ if (!args->worker_continue)
+ return;
+
+ int mode = args->mode;
+ struct link_map *new = args->map;
+
/* Run the initializer functions of new objects. Temporarily
disable the exception handler, so that lazy binding failures are
fatal. */
diff --git a/elf/dl-support.c b/elf/dl-support.c
index 02e2ed7..d99c1f1 100644
--- a/elf/dl-support.c
+++ b/elf/dl-support.c
@@ -228,6 +228,13 @@ __rtld_lock_define_initialized_recursive (, _dl_load_lock)
list of loaded objects while an object is added to or removed from
that list. */
__rtld_lock_define_initialized_recursive (, _dl_load_write_lock)
+ /* This lock protects global and module specific TLS related data.
+ E.g. it is held in dlopen and dlclose when GL(dl_tls_generation),
+ GL(dl_tls_max_dtv_idx) or GL(dl_tls_dtv_slotinfo_list) are
+ accessed and when TLS related relocations are processed for a
+ module. It was introduced to keep pthread_create accessing TLS
+ state that is being set up. */
+__rtld_lock_define_initialized_recursive (, _dl_load_tls_lock)
#ifdef HAVE_AUX_VECTOR
diff --git a/elf/dl-tls.c b/elf/dl-tls.c
index d554ae4..9260d2d 100644
--- a/elf/dl-tls.c
+++ b/elf/dl-tls.c
@@ -532,7 +532,7 @@ _dl_allocate_tls_init (void *result)
size_t maxgen = 0;
/* Protects global dynamic TLS related state. */
- __rtld_lock_lock_recursive (GL(dl_load_lock));
+ __rtld_lock_lock_recursive (GL(dl_load_tls_lock));
/* Check if the current dtv is big enough. */
if (dtv[-1].counter < GL(dl_tls_max_dtv_idx))
@@ -606,7 +606,7 @@ _dl_allocate_tls_init (void *result)
listp = listp->next;
assert (listp != NULL);
}
- __rtld_lock_unlock_recursive (GL(dl_load_lock));
+ __rtld_lock_unlock_recursive (GL(dl_load_tls_lock));
/* The DTV version is up-to-date now. */
dtv[0].counter = maxgen;
@@ -745,7 +745,7 @@ _dl_update_slotinfo (unsigned long int req_modid)
Here the dtv needs to be updated to new_gen generation count.
- This code may be called during TLS access when GL(dl_load_lock)
+ This code may be called during TLS access when GL(dl_load_tls_lock)
is not held. In that case the user code has to synchronize with
dlopen and dlclose calls of relevant modules. A module m is
relevant if the generation of m <= new_gen and dlclose of m is
@@ -867,11 +867,11 @@ tls_get_addr_tail (GET_ADDR_ARGS, dtv_t *dtv, struct link_map *the_map)
if (__glibc_unlikely (the_map->l_tls_offset
!= FORCED_DYNAMIC_TLS_OFFSET))
{
- __rtld_lock_lock_recursive (GL(dl_load_lock));
+ __rtld_lock_lock_recursive (GL(dl_load_tls_lock));
if (__glibc_likely (the_map->l_tls_offset == NO_TLS_OFFSET))
{
the_map->l_tls_offset = FORCED_DYNAMIC_TLS_OFFSET;
- __rtld_lock_unlock_recursive (GL(dl_load_lock));
+ __rtld_lock_unlock_recursive (GL(dl_load_tls_lock));
}
else if (__glibc_likely (the_map->l_tls_offset
!= FORCED_DYNAMIC_TLS_OFFSET))
@@ -883,7 +883,7 @@ tls_get_addr_tail (GET_ADDR_ARGS, dtv_t *dtv, struct link_map *the_map)
#else
# error "Either TLS_TCB_AT_TP or TLS_DTV_AT_TP must be defined"
#endif
- __rtld_lock_unlock_recursive (GL(dl_load_lock));
+ __rtld_lock_unlock_recursive (GL(dl_load_tls_lock));
dtv[GET_ADDR_MODULE].pointer.to_free = NULL;
dtv[GET_ADDR_MODULE].pointer.val = p;
@@ -891,7 +891,7 @@ tls_get_addr_tail (GET_ADDR_ARGS, dtv_t *dtv, struct link_map *the_map)
return (char *) p + GET_ADDR_OFFSET;
}
else
- __rtld_lock_unlock_recursive (GL(dl_load_lock));
+ __rtld_lock_unlock_recursive (GL(dl_load_tls_lock));
}
struct dtv_pointer result = allocate_and_init (the_map);
dtv[GET_ADDR_MODULE].pointer = result;
@@ -962,7 +962,7 @@ _dl_tls_get_addr_soft (struct link_map *l)
return NULL;
dtv_t *dtv = THREAD_DTV ();
- /* This may be called without holding the GL(dl_load_lock). Reading
+ /* This may be called without holding the GL(dl_load_tls_lock). Reading
arbitrary gen value is fine since this is best effort code. */
size_t gen = atomic_load_relaxed (&GL(dl_tls_generation));
if (__glibc_unlikely (dtv[0].counter != gen))
diff --git a/elf/rtld.c b/elf/rtld.c
index 8d2bba3..9642eb9 100644
--- a/elf/rtld.c
+++ b/elf/rtld.c
@@ -322,6 +322,7 @@ struct rtld_global _rtld_global =
#ifdef _LIBC_REENTRANT
._dl_load_lock = _RTLD_LOCK_RECURSIVE_INITIALIZER,
._dl_load_write_lock = _RTLD_LOCK_RECURSIVE_INITIALIZER,
+ ._dl_load_tls_lock = _RTLD_LOCK_RECURSIVE_INITIALIZER,
#endif
._dl_nns = 1,
._dl_ns =
diff --git a/posix/fork.c b/posix/fork.c
index c471f7b..021691b 100644
--- a/posix/fork.c
+++ b/posix/fork.c
@@ -99,6 +99,9 @@ __libc_fork (void)
/* Reset the lock the dynamic loader uses to protect its data. */
__rtld_lock_initialize (GL(dl_load_lock));
+ /* Reset the lock protecting dynamic TLS related data. */
+ __rtld_lock_initialize (GL(dl_load_tls_lock));
+
reclaim_stacks ();
/* Run the handlers registered for the child. */
diff --git a/sysdeps/generic/ldsodefs.h b/sysdeps/generic/ldsodefs.h
index d49529d..9ec1511 100644
--- a/sysdeps/generic/ldsodefs.h
+++ b/sysdeps/generic/ldsodefs.h
@@ -369,6 +369,13 @@ struct rtld_global
list of loaded objects while an object is added to or removed
from that list. */
__rtld_lock_define_recursive (EXTERN, _dl_load_write_lock)
+ /* This lock protects global and module specific TLS related data.
+ E.g. it is held in dlopen and dlclose when GL(dl_tls_generation),
+ GL(dl_tls_max_dtv_idx) or GL(dl_tls_dtv_slotinfo_list) are
+ accessed and when TLS related relocations are processed for a
+ module. It was introduced to keep pthread_create accessing TLS
+ state that is being set up. */
+ __rtld_lock_define_recursive (EXTERN, _dl_load_tls_lock)
/* Incremented whenever something may have been added to dl_loaded. */
EXTERN unsigned long long _dl_load_adds;
@@ -1268,7 +1275,7 @@ extern int _dl_scope_free (void *) attribute_hidden;
/* Add module to slot information data. If DO_ADD is false, only the
required memory is allocated. Must be called with GL
- (dl_load_lock) acquired. If the function has already been called
+ (dl_load_tls_lock) acquired. If the function has already been called
for the link map L with !do_add, then this function will not raise
an exception, otherwise it is possible that it encounters a memory
allocation failure. */
diff --git a/sysdeps/pthread/Makefile b/sysdeps/pthread/Makefile
index 0af9c59..df8943f 100644
--- a/sysdeps/pthread/Makefile
+++ b/sysdeps/pthread/Makefile
@@ -152,15 +152,17 @@ tests += tst-cancelx2 tst-cancelx3 tst-cancelx6 tst-cancelx8 tst-cancelx9 \
tst-cleanupx0 tst-cleanupx1 tst-cleanupx2 tst-cleanupx3
ifeq ($(build-shared),yes)
-tests += tst-atfork2 tst-pt-tls4 tst-_res1 tst-fini1
+tests += tst-atfork2 tst-pt-tls4 tst-_res1 tst-fini1 tst-create1
tests-nolibpthread += tst-fini1
endif
modules-names += tst-atfork2mod tst-tls4moda tst-tls4modb \
- tst-_res1mod1 tst-_res1mod2 tst-fini1mod
+ tst-_res1mod1 tst-_res1mod2 tst-fini1mod \
+ tst-create1mod
test-modules = $(addprefix $(objpfx),$(addsuffix .so,$(modules-names)))
tst-atfork2mod.so-no-z-defs = yes
+tst-create1mod.so-no-z-defs = yes
ifeq ($(build-shared),yes)
# Build all the modules even when not actually running test programs.
@@ -279,4 +281,8 @@ LDFLAGS-tst-join7mod.so = -Wl,-soname,tst-join7mod.so
CFLAGS-tst-unwind-thread.c += -funwind-tables
+LDFLAGS-tst-create1 = -Wl,-export-dynamic
+$(objpfx)tst-create1: $(shared-thread-library)
+$(objpfx)tst-create1.out: $(objpfx)tst-create1mod.so
+
endif
diff --git a/sysdeps/pthread/tst-create1.c b/sysdeps/pthread/tst-create1.c
new file mode 100644
index 0000000..932586c
--- /dev/null
+++ b/sysdeps/pthread/tst-create1.c
@@ -0,0 +1,119 @@
+/* Verify that pthread_create does not deadlock when ctors take locks.
+ Copyright (C) 2021 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <https://www.gnu.org/licenses/>. */
+
+#include <stdio.h>
+#include <support/xdlfcn.h>
+#include <support/xthread.h>
+
+/*
+Check if ctor and pthread_create deadlocks in
+
+thread 1: dlopen -> ctor -> lock(user_lock)
+thread 2: lock(user_lock) -> pthread_create
+
+or in
+
+thread 1: dlclose -> dtor -> lock(user_lock)
+thread 2: lock(user_lock) -> pthread_create
+*/
+
+static pthread_barrier_t bar_ctor;
+static pthread_barrier_t bar_dtor;
+static pthread_mutex_t user_lock = PTHREAD_MUTEX_INITIALIZER;
+
+void
+ctor (void)
+{
+ xpthread_barrier_wait (&bar_ctor);
+ dprintf (1, "thread 1: in ctor: started.\n");
+ xpthread_mutex_lock (&user_lock);
+ dprintf (1, "thread 1: in ctor: locked user_lock.\n");
+ xpthread_mutex_unlock (&user_lock);
+ dprintf (1, "thread 1: in ctor: unlocked user_lock.\n");
+ dprintf (1, "thread 1: in ctor: done.\n");
+}
+
+void
+dtor (void)
+{
+ xpthread_barrier_wait (&bar_dtor);
+ dprintf (1, "thread 1: in dtor: started.\n");
+ xpthread_mutex_lock (&user_lock);
+ dprintf (1, "thread 1: in dtor: locked user_lock.\n");
+ xpthread_mutex_unlock (&user_lock);
+ dprintf (1, "thread 1: in dtor: unlocked user_lock.\n");
+ dprintf (1, "thread 1: in dtor: done.\n");
+}
+
+static void *
+thread3 (void *a)
+{
+ dprintf (1, "thread 3: started.\n");
+ dprintf (1, "thread 3: done.\n");
+ return 0;
+}
+
+static void *
+thread2 (void *a)
+{
+ pthread_t t3;
+ dprintf (1, "thread 2: started.\n");
+
+ xpthread_mutex_lock (&user_lock);
+ dprintf (1, "thread 2: locked user_lock.\n");
+ xpthread_barrier_wait (&bar_ctor);
+ t3 = xpthread_create (0, thread3, 0);
+ xpthread_mutex_unlock (&user_lock);
+ dprintf (1, "thread 2: unlocked user_lock.\n");
+ xpthread_join (t3);
+
+ xpthread_mutex_lock (&user_lock);
+ dprintf (1, "thread 2: locked user_lock.\n");
+ xpthread_barrier_wait (&bar_dtor);
+ t3 = xpthread_create (0, thread3, 0);
+ xpthread_mutex_unlock (&user_lock);
+ dprintf (1, "thread 2: unlocked user_lock.\n");
+ xpthread_join (t3);
+
+ dprintf (1, "thread 2: done.\n");
+ return 0;
+}
+
+static void
+thread1 (void)
+{
+ dprintf (1, "thread 1: started.\n");
+ xpthread_barrier_init (&bar_ctor, NULL, 2);
+ xpthread_barrier_init (&bar_dtor, NULL, 2);
+ pthread_t t2 = xpthread_create (0, thread2, 0);
+ void *p = xdlopen ("tst-create1mod.so", RTLD_NOW | RTLD_GLOBAL);
+ dprintf (1, "thread 1: dlopen done.\n");
+ xdlclose (p);
+ dprintf (1, "thread 1: dlclose done.\n");
+ xpthread_join (t2);
+ dprintf (1, "thread 1: done.\n");
+}
+
+static int
+do_test (void)
+{
+ thread1 ();
+ return 0;
+}
+
+#include <support/test-driver.c>
diff --git a/sysdeps/pthread/tst-create1mod.c b/sysdeps/pthread/tst-create1mod.c
new file mode 100644
index 0000000..62c9006
--- /dev/null
+++ b/sysdeps/pthread/tst-create1mod.c
@@ -0,0 +1,41 @@
+/* Verify that pthread_create does not deadlock when ctors take locks.
+ Copyright (C) 2021 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <https://www.gnu.org/licenses/>. */
+
+#include <stdio.h>
+
+/* Require TLS setup for the module. */
+__thread int tlsvar;
+
+void ctor (void);
+void dtor (void);
+
+static void __attribute__ ((constructor))
+do_init (void)
+{
+ dprintf (1, "constructor started: %d.\n", tlsvar++);
+ ctor ();
+ dprintf (1, "constructor done: %d.\n", tlsvar++);
+}
+
+static void __attribute__ ((destructor))
+do_end (void)
+{
+ dprintf (1, "destructor started: %d.\n", tlsvar++);
+ dtor ();
+ dprintf (1, "destructor done: %d.\n", tlsvar++);
+}
--
1.8.3.1

543
elf-Drop-elf-tls-macros.h-in-favor-of-__thread-and-t.patch
View File

@ -1,543 +0,0 @@
From 33c50ef42878b07ee6ead8b3f1a81d8c2c74697c Mon Sep 17 00:00:00 2001
From: Fangrui Song <maskray@google.com>
Date: Mon, 16 Aug 2021 09:59:30 -0700
Subject: [PATCH] elf: Drop elf/tls-macros.h in favor of __thread and tls_model
attributes [BZ #28152] [BZ #28205]
elf/tls-macros.h was added for TLS testing when GCC did not support
__thread. __thread and tls_model attributes are mature now and have been
used by many newer tests.
Also delete tst-tls2.c which tests .tls_common (unused by modern GCC and
unsupported by Clang/LLD). .tls_common and .tbss definition are almost
identical after linking, so the runtime test doesn't add additional
coverage. Assembler and linker tests should be on the binutils side.
When LLD 13.0.0 is allowed in configure.ac
(https://sourceware.org/pipermail/libc-alpha/2021-August/129866.html),
`make check` result is on par with glibc built with GNU ld on aarch64
and x86_64.
As a future clean-up, TLS_GD/TLS_LD/TLS_IE/TLS_IE macros can be removed from
sysdeps/*/tls-macros.h. We can add optional -mtls-dialect={gnu2,trad}
tests to ensure coverage.
Tested on aarch64-linux-gnu, powerpc64le-linux-gnu, and x86_64-linux-gnu.
Reviewed-by: Szabolcs Nagy <szabolcs.nagy@arm.com>
---
elf/Makefile | 4 +-
elf/tls-macros.h | 25 -----------
elf/tst-tls1.c | 64 +++++++++++-----------------
elf/tst-tls2.c | 82 ------------------------------------
elf/tst-tls3.c | 26 +++++-------
elf/tst-tlsmod1.c | 24 +++++------
elf/tst-tlsmod2.c | 6 +--
elf/tst-tlsmod3.c | 8 ++--
elf/tst-tlsmod4.c | 6 +--
elf/tst-tlsmod5.c | 4 +-
elf/tst-tlsmod6.c | 4 +-
sysdeps/powerpc/mod-tlsopt-powerpc.c | 6 +--
sysdeps/powerpc/tst-tlsifunc.c | 4 +-
13 files changed, 64 insertions(+), 199 deletions(-)
delete mode 100644 elf/tls-macros.h
delete mode 100644 elf/tst-tls2.c
diff --git a/elf/Makefile b/elf/Makefile
index d05f410..725537c 100644
--- a/elf/Makefile
+++ b/elf/Makefile
@@ -163,7 +163,7 @@ tests-static-normal := tst-array1-static tst-array5-static \
tst-single_threaded-static tst-single_threaded-pthread-static \
tst-dst-static tst-getauxval-static
-tests-static-internal := tst-tls1-static tst-tls2-static \
+tests-static-internal := tst-tls1-static \
tst-ptrguard1-static tst-stackguard1-static \
tst-tls1-static-non-pie
@@ -183,7 +183,7 @@ endif
tests := tst-tls9 tst-leaks1 \
tst-array1 tst-array2 tst-array3 tst-array4 tst-array5 \
tst-auxv tst-stringtable
-tests-internal := tst-tls1 tst-tls2 $(tests-static-internal)
+tests-internal := tst-tls1 $(tests-static-internal)
tests-static := $(tests-static-normal) $(tests-static-internal)
ifeq (yes,$(build-shared))
diff --git a/elf/tls-macros.h b/elf/tls-macros.h
deleted file mode 100644
index e25e33b..0000000
--- a/elf/tls-macros.h
+++ /dev/null
@@ -1,25 +0,0 @@
-/* Macros to support TLS testing in times of missing compiler support. */
-
-#define COMMON_INT_DEF(x) \
- asm (".tls_common " #x ",4,4")
-/* XXX Until we get compiler support we don't need declarations. */
-#define COMMON_INT_DECL(x)
-
-/* XXX This definition will probably be machine specific, too. */
-#define VAR_INT_DEF(x) \
- asm (".section .tdata\n\t" \
- ".globl " #x "\n" \
- ".balign 4\n" \
- #x ":\t.long 0\n\t" \
- ".size " #x ",4\n\t" \
- ".previous")
-/* XXX Until we get compiler support we don't need declarations. */
-#define VAR_INT_DECL(x)
-
-#include_next <tls-macros.h>
-
- /* XXX Each architecture must have its own asm for now. */
-#if !defined TLS_LE || !defined TLS_IE \
- || !defined TLS_LD || !defined TLS_GD
-# error "No support for this architecture so far."
-#endif
diff --git a/elf/tst-tls1.c b/elf/tst-tls1.c
index c31da56..b341221 100644
--- a/elf/tst-tls1.c
+++ b/elf/tst-tls1.c
@@ -1,13 +1,14 @@
/* glibc test for TLS in ld.so. */
#include <stdio.h>
-#include "tls-macros.h"
-
-
-/* Two common 'int' variables in TLS. */
-COMMON_INT_DEF(foo);
-COMMON_INT_DEF(bar);
+__thread int foo, bar __attribute__ ((tls_model("local-exec")));
+extern __thread int foo_gd asm ("foo") __attribute__ ((tls_model("global-dynamic")));
+extern __thread int foo_ld asm ("foo") __attribute__ ((tls_model("local-dynamic")));
+extern __thread int foo_ie asm ("foo") __attribute__ ((tls_model("initial-exec")));
+extern __thread int bar_gd asm ("bar") __attribute__ ((tls_model("global-dynamic")));
+extern __thread int bar_ld asm ("bar") __attribute__ ((tls_model("local-dynamic")));
+extern __thread int bar_ie asm ("bar") __attribute__ ((tls_model("initial-exec")));
static int
do_test (void)
@@ -18,63 +19,48 @@ do_test (void)
/* Set the variable using the local exec model. */
puts ("set bar to 1 (LE)");
- ap = TLS_LE (bar);
- *ap = 1;
+ bar = 1;
/* Get variables using initial exec model. */
fputs ("get sum of foo and bar (IE)", stdout);
- ap = TLS_IE (foo);
- bp = TLS_IE (bar);
+ ap = &foo_ie;
+ bp = &bar_ie;
printf (" = %d\n", *ap + *bp);
result |= *ap + *bp != 1;
- if (*ap != 0)
- {
- printf ("foo = %d\n", *ap);
- result = 1;
- }
- if (*bp != 1)
+ if (*ap != 0 || *bp != 1)
{
- printf ("bar = %d\n", *bp);
+ printf ("foo = %d\nbar = %d\n", *ap, *bp);
result = 1;
}
- /* Get variables using local dynamic model. */
- fputs ("get sum of foo and bar (LD)", stdout);
- ap = TLS_LD (foo);
- bp = TLS_LD (bar);
+ /* Get variables using local dynamic model or TLSDESC. */
+ fputs ("get sum of foo and bar (LD or TLSDESC)", stdout);
+ ap = &foo_ld;
+ bp = &bar_ld;
printf (" = %d\n", *ap + *bp);
result |= *ap + *bp != 1;
- if (*ap != 0)
- {
- printf ("foo = %d\n", *ap);
- result = 1;
- }
- if (*bp != 1)
+ if (*ap != 0 || *bp != 1)
{
- printf ("bar = %d\n", *bp);
+ printf ("foo = %d\nbar = %d\n", *ap, *bp);
result = 1;
}
- /* Get variables using generic dynamic model. */
- fputs ("get sum of foo and bar (GD)", stdout);
- ap = TLS_GD (foo);
- bp = TLS_GD (bar);
+ /* Get variables using general dynamic model or TLSDESC. */
+ fputs ("get sum of foo and bar (GD or TLSDESC)", stdout);
+ ap = &foo_gd;
+ bp = &bar_gd;
printf (" = %d\n", *ap + *bp);
result |= *ap + *bp != 1;
- if (*ap != 0)
- {
- printf ("foo = %d\n", *ap);
- result = 1;
- }
- if (*bp != 1)
+ if (*ap != 0 || *bp != 1)
{
- printf ("bar = %d\n", *bp);
+ printf ("foo = %d\nbar = %d\n", *ap, *bp);
result = 1;
}
+
return result;
}
diff --git a/elf/tst-tls2.c b/elf/tst-tls2.c
deleted file mode 100644
index 963b8d6..0000000
--- a/elf/tst-tls2.c
+++ /dev/null
@@ -1,82 +0,0 @@
-/* glibc test for TLS in ld.so. */
-#include <stdio.h>
-
-#include "tls-macros.h"
-
-
-/* Two 'int' variables in TLS. */
-VAR_INT_DEF(foo);
-VAR_INT_DEF(bar);
-
-
-static int
-do_test (void)
-{
- int result = 0;
- int *ap, *bp;
-
-
- /* Set the variable using the local exec model. */
- puts ("set bar to 1 (LE)");
- ap = TLS_LE (bar);
- *ap = 1;
-
-
- /* Get variables using initial exec model. */
- fputs ("get sum of foo and bar (IE)", stdout);
- ap = TLS_IE (foo);
- bp = TLS_IE (bar);
- printf (" = %d\n", *ap + *bp);
- result |= *ap + *bp != 1;
- if (*ap != 0)
- {
- printf ("foo = %d\n", *ap);
- result = 1;
- }
- if (*bp != 1)
- {
- printf ("bar = %d\n", *bp);
- result = 1;
- }
-
-
- /* Get variables using local dynamic model. */
- fputs ("get sum of foo and bar (LD)", stdout);
- ap = TLS_LD (foo);
- bp = TLS_LD (bar);
- printf (" = %d\n", *ap + *bp);
- result |= *ap + *bp != 1;
- if (*ap != 0)
- {
- printf ("foo = %d\n", *ap);
- result = 1;
- }
- if (*bp != 1)
- {
- printf ("bar = %d\n", *bp);
- result = 1;
- }
-
-
- /* Get variables using generic dynamic model. */
- fputs ("get sum of foo and bar (GD)", stdout);
- ap = TLS_GD (foo);
- bp = TLS_GD (bar);
- printf (" = %d\n", *ap + *bp);
- result |= *ap + *bp != 1;
- if (*ap != 0)
- {
- printf ("foo = %d\n", *ap);
- result = 1;
- }
- if (*bp != 1)
- {
- printf ("bar = %d\n", *bp);
- result = 1;
- }
-
- return result;
-}
-
-
-#include <support/test-driver.c>
diff --git a/elf/tst-tls3.c b/elf/tst-tls3.c
index 7e0abb4..222b179 100644
--- a/elf/tst-tls3.c
+++ b/elf/tst-tls3.c
@@ -1,13 +1,12 @@
/* glibc test for TLS in ld.so. */
#include <stdio.h>
-#include "tls-macros.h"
-
-/* One define int variable, two externs. */
-COMMON_INT_DECL(foo);
-VAR_INT_DECL(bar);
-VAR_INT_DEF(baz);
+__thread int foo, bar __attribute__ ((tls_model("initial-exec")));
+__thread int baz __attribute__ ((tls_model("local-exec")));
+extern __thread int foo_gd __attribute__ ((alias("foo"), tls_model("global-dynamic")));
+extern __thread int bar_gd __attribute__ ((alias("bar"), tls_model("global-dynamic")));
+extern __thread int baz_ld __attribute__ ((alias("baz"), tls_model("local-dynamic")));
extern int in_dso (void);
@@ -22,23 +21,20 @@ do_test (void)
/* Set the variable using the local exec model. */
puts ("set baz to 3 (LE)");
- ap = TLS_LE (baz);
- *ap = 3;
+ baz = 3;
/* Get variables using initial exec model. */
puts ("set variables foo and bar (IE)");
- ap = TLS_IE (foo);
- *ap = 1;
- bp = TLS_IE (bar);
- *bp = 2;
+ foo = 1;
+ bar = 2;
/* Get variables using local dynamic model. */
fputs ("get sum of foo, bar (GD) and baz (LD)", stdout);
- ap = TLS_GD (foo);
- bp = TLS_GD (bar);
- cp = TLS_LD (baz);
+ ap = &foo_gd;
+ bp = &bar_gd;
+ cp = &baz_ld;
printf (" = %d\n", *ap + *bp + *cp);
result |= *ap + *bp + *cp != 6;
if (*ap != 1)
diff --git a/elf/tst-tlsmod1.c b/elf/tst-tlsmod1.c
index 8d91567..a448c4d 100644
--- a/elf/tst-tlsmod1.c
+++ b/elf/tst-tlsmod1.c
@@ -1,12 +1,12 @@
#include <stdio.h>
-#include "tls-macros.h"
+__thread int foo, bar __attribute__ ((tls_model("global-dynamic")));
+extern __thread int baz __attribute__ ((tls_model("global-dynamic")));
+extern __thread int foo_ie asm ("foo") __attribute__ ((tls_model("initial-exec")));
+extern __thread int bar_ie asm ("bar") __attribute__ ((tls_model("initial-exec")));
+extern __thread int baz_ie asm ("baz") __attribute__ ((tls_model("initial-exec")));
-/* One define int variable, two externs. */
-COMMON_INT_DEF(foo);
-VAR_INT_DEF(bar);
-VAR_INT_DECL(baz);
extern int in_dso (void);
@@ -19,8 +19,8 @@ in_dso (void)
/* Get variables using initial exec model. */
fputs ("get sum of foo and bar (IE)", stdout);
asm ("" ::: "memory");
- ap = TLS_IE (foo);
- bp = TLS_IE (bar);
+ ap = &foo_ie;
+ bp = &bar_ie;
printf (" = %d\n", *ap + *bp);
result |= *ap + *bp != 3;
if (*ap != 1)
@@ -35,11 +35,11 @@ in_dso (void)
}
- /* Get variables using generic dynamic model. */
- fputs ("get sum of foo and bar and baz (GD)", stdout);
- ap = TLS_GD (foo);
- bp = TLS_GD (bar);
- cp = TLS_GD (baz);
+ /* Get variables using generic dynamic model or TLSDESC. */
+ fputs ("get sum of foo and bar and baz (GD or TLSDESC)", stdout);
+ ap = &foo;
+ bp = &bar;
+ cp = &baz;
printf (" = %d\n", *ap + *bp + *cp);
result |= *ap + *bp + *cp != 6;
if (*ap != 1)
diff --git a/elf/tst-tlsmod2.c b/elf/tst-tlsmod2.c
index 40eb140..3223fe4 100644
--- a/elf/tst-tlsmod2.c
+++ b/elf/tst-tlsmod2.c
@@ -1,9 +1,7 @@
#include <stdio.h>
-#include "tls-macros.h"
-
-COMMON_INT_DEF(foo);
+__thread int foo;
int
@@ -15,7 +13,7 @@ in_dso (int n, int *caller_foop)
puts ("foo"); /* Make sure PLT is used before macros. */
asm ("" ::: "memory");
- foop = TLS_GD (foo);
+ foop = &foo;
if (caller_foop != NULL && foop != caller_foop)
{
diff --git a/elf/tst-tlsmod3.c b/elf/tst-tlsmod3.c
index 6d186c4..d6e7498 100644
--- a/elf/tst-tlsmod3.c
+++ b/elf/tst-tlsmod3.c
@@ -1,10 +1,10 @@
#include <stdio.h>
-#include "tls-macros.h"
extern int in_dso (int n, int *caller_foop);
-COMMON_INT_DEF(comm_n);
+extern __thread int foo;
+__thread int comm_n;
@@ -20,8 +20,8 @@ in_dso2 (void)
puts ("foo"); /* Make sure PLT is used before macros. */
asm ("" ::: "memory");
- foop = TLS_GD (foo);
- np = TLS_GD (comm_n);
+ foop = &foo;
+ np = &comm_n;
if (n != *np)
{
diff --git a/elf/tst-tlsmod4.c b/elf/tst-tlsmod4.c
index 86889aa..f38919a 100644
--- a/elf/tst-tlsmod4.c
+++ b/elf/tst-tlsmod4.c
@@ -1,9 +1,7 @@
#include <stdio.h>
-#include "tls-macros.h"
-
-COMMON_INT_DEF(baz);
+__thread int baz;
int
@@ -15,7 +13,7 @@ in_dso (int n, int *caller_bazp)
puts ("foo"); /* Make sure PLT is used before macros. */
asm ("" ::: "memory");
- bazp = TLS_GD (baz);
+ bazp = &baz;
if (caller_bazp != NULL && bazp != caller_bazp)
{
diff --git a/elf/tst-tlsmod5.c b/elf/tst-tlsmod5.c
index a97c7e5..3f39c5b 100644
--- a/elf/tst-tlsmod5.c
+++ b/elf/tst-tlsmod5.c
@@ -1,3 +1 @@
-#include "tls-macros.h"
-
-COMMON_INT_DEF(foo);
+__thread int foo;
diff --git a/elf/tst-tlsmod6.c b/elf/tst-tlsmod6.c
index e968596..7b3571f 100644
--- a/elf/tst-tlsmod6.c
+++ b/elf/tst-tlsmod6.c
@@ -1,3 +1 @@
-#include "tls-macros.h"
-
-COMMON_INT_DEF(bar);
+__thread int bar;
diff --git a/sysdeps/powerpc/mod-tlsopt-powerpc.c b/sysdeps/powerpc/mod-tlsopt-powerpc.c
index ee0db12..2a82e53 100644
--- a/sysdeps/powerpc/mod-tlsopt-powerpc.c
+++ b/sysdeps/powerpc/mod-tlsopt-powerpc.c
@@ -1,11 +1,9 @@
/* shared library to test for __tls_get_addr optimization. */
#include <stdio.h>
-#include "../../elf/tls-macros.h"
#include "dl-tls.h"
-/* common 'int' variable in TLS. */
-COMMON_INT_DEF(foo);
+__thread int foo __attribute__ ((tls_model("global-dynamic")));
int
@@ -14,7 +12,7 @@ tls_get_addr_opt_test (void)
int result = 0;
/* Get variable using general dynamic model. */
- int *ap = TLS_GD (foo);
+ int *ap = &foo;
if (*ap != 0)
{
printf ("foo = %d\n", *ap);
diff --git a/sysdeps/powerpc/tst-tlsifunc.c b/sysdeps/powerpc/tst-tlsifunc.c
index 3095d41..c8c0bad 100644
--- a/sysdeps/powerpc/tst-tlsifunc.c
+++ b/sysdeps/powerpc/tst-tlsifunc.c
@@ -21,9 +21,9 @@
#include <stdint.h>
#include <inttypes.h>
#include <libc-symbols.h>
-#include <tls-macros.h>
__thread int bar;
+extern __thread int bar_gd asm ("bar") __attribute__ ((tls_model("global-dynamic")));
static int *bar_ptr = NULL;
static uint32_t resolver_platform = 0;
@@ -57,7 +57,7 @@ get_platform (void)
void
init_foo (void)
{
- bar_ptr = TLS_GD (bar);
+ bar_ptr = &bar_gd;
}
int
--
1.8.3.1

27
elf-Fix-missing-colon-in-LD_SHOW_AUXV-output-BZ-2825.patch
View File

@ -1,27 +0,0 @@
From 82fbcd7118d760492e2ecc9fa291e358b9ba0361 Mon Sep 17 00:00:00 2001
From: Arjun Shankar <arjun@redhat.com>
Date: Fri, 20 Aug 2021 16:24:05 +0200
Subject: [PATCH] elf: Fix missing colon in LD_SHOW_AUXV output [BZ #28253]
This commit adds a missing colon in the AT_MINSIGSTKSZ entry in
the _dl_show_auxv function.
---
elf/dl-sysdep.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/elf/dl-sysdep.c b/elf/dl-sysdep.c
index d47bef1..2c684c2 100644
--- a/elf/dl-sysdep.c
+++ b/elf/dl-sysdep.c
@@ -317,7 +317,7 @@ _dl_show_auxv (void)
[AT_SYSINFO_EHDR - 2] = { "SYSINFO_EHDR: 0x", hex },
[AT_RANDOM - 2] = { "RANDOM: 0x", hex },
[AT_HWCAP2 - 2] = { "HWCAP2: 0x", hex },
- [AT_MINSIGSTKSZ - 2] = { "MINSIGSTKSZ ", dec },
+ [AT_MINSIGSTKSZ - 2] = { "MINSIGSTKSZ: ", dec },
[AT_L1I_CACHESIZE - 2] = { "L1I_CACHESIZE: ", dec },
[AT_L1I_CACHEGEOMETRY - 2] = { "L1I_CACHEGEOMETRY: 0x", hex },
[AT_L1D_CACHESIZE - 2] = { "L1D_CACHESIZE: ", dec },
--
1.8.3.1

177
elf-Unconditionally-use-__ehdr_start.patch
View File

@ -1,177 +0,0 @@
From 302247c89121e8d4c7629e589edbb4974fff6edb Mon Sep 17 00:00:00 2001
From: Fangrui Song <maskray@google.com>
Date: Tue, 10 Aug 2021 11:04:56 -0700
Subject: [PATCH] elf: Unconditionally use __ehdr_start
We can consider __ehdr_start (from binutils 2.23 onwards)
unconditionally supported, since configure.ac requires binutils>=2.25.
The configure.ac check is related to an ia64 bug fixed by binutils 2.24.
See https://sourceware.org/pipermail/libc-alpha/2014-August/053503.html
Tested on x86_64-linux-gnu. Tested build-many-glibcs.py with
aarch64-linux-gnu and s390x-linux-gnu.
Reviewed-by: Szabolcs Nagy <szabolcs.nagy@arm.com>
---
config.h.in | 3 ---
configure | 52 ----------------------------------------------------
configure.ac | 34 ----------------------------------
elf/rtld.c | 13 ++++---------
4 files changed, 4 insertions(+), 98 deletions(-)
diff --git a/config.h.in b/config.h.in
index 8b45a3a..0d92504 100644
--- a/config.h.in
+++ b/config.h.in
@@ -198,9 +198,6 @@
/* Define if CC supports attribute retain. */
#undef HAVE_GNU_RETAIN
-/* Define if the linker defines __ehdr_start. */
-#undef HAVE_EHDR_START
-
/* Define to 1 if the assembler needs intermediate aliases to define
multiple symbol versions for one symbol. */
#define SYMVER_NEEDS_ALIAS 0
diff --git a/configure b/configure
index 9619c10..7272fbf 100755
--- a/configure
+++ b/configure
@@ -6636,58 +6636,6 @@ if test $libc_cv_predef_fortify_source = yes; then
fi
-# Some linkers on some architectures support __ehdr_start but with
-# bugs. Make sure usage of it does not create relocations in the
-# output (as the linker should resolve them all for us).
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether the linker provides working __ehdr_start" >&5
-$as_echo_n "checking whether the linker provides working __ehdr_start... " >&6; }
-if ${libc_cv_ehdr_start+:} false; then :
- $as_echo_n "(cached) " >&6
-else
-
-old_CFLAGS="$CFLAGS"
-old_LDFLAGS="$LDFLAGS"
-old_LIBS="$LIBS"
-CFLAGS="$CFLAGS -fPIC"
-LDFLAGS="$LDFLAGS -nostdlib -nostartfiles -shared $no_ssp"
-LIBS=
-cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h. */
-
-typedef struct {
- char foo;
- long val;
-} Ehdr;
-extern const Ehdr __ehdr_start __attribute__ ((visibility ("hidden")));
-long ehdr (void) { return __ehdr_start.val; }
-
-_ACEOF
-if ac_fn_c_try_link "$LINENO"; then :
- if $READELF -r conftest | grep -F __ehdr_start >/dev/null; then
- libc_cv_ehdr_start=broken
- else
- libc_cv_ehdr_start=yes
- fi
-else
- libc_cv_ehdr_start=no
-fi
-rm -f core conftest.err conftest.$ac_objext \
- conftest$ac_exeext conftest.$ac_ext
-CFLAGS="$old_CFLAGS"
-LDFLAGS="$old_LDFLAGS"
-LIBS="$old_LIBS"
-
-fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_ehdr_start" >&5
-$as_echo "$libc_cv_ehdr_start" >&6; }
-if test "$libc_cv_ehdr_start" = yes; then
- $as_echo "#define HAVE_EHDR_START 1" >>confdefs.h
-
-elif test "$libc_cv_ehdr_start" = broken; then
- { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: linker is broken -- you should upgrade" >&5
-$as_echo "$as_me: WARNING: linker is broken -- you should upgrade" >&2;}
-fi
-
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether the assembler requires one version per symbol" >&5
$as_echo_n "checking whether the assembler requires one version per symbol... " >&6; }
if ${libc_cv_symver_needs_alias+:} false; then :
diff --git a/configure.ac b/configure.ac
index 34ecbba..af47cd5 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1662,40 +1662,6 @@ if test $libc_cv_predef_fortify_source = yes; then
fi
AC_SUBST(CPPUNDEFS)
-# Some linkers on some architectures support __ehdr_start but with
-# bugs. Make sure usage of it does not create relocations in the
-# output (as the linker should resolve them all for us).
-AC_CACHE_CHECK([whether the linker provides working __ehdr_start],
- libc_cv_ehdr_start, [
-old_CFLAGS="$CFLAGS"
-old_LDFLAGS="$LDFLAGS"
-old_LIBS="$LIBS"
-CFLAGS="$CFLAGS -fPIC"
-LDFLAGS="$LDFLAGS -nostdlib -nostartfiles -shared $no_ssp"
-LIBS=
-AC_LINK_IFELSE([AC_LANG_SOURCE([
-typedef struct {
- char foo;
- long val;
-} Ehdr;
-extern const Ehdr __ehdr_start __attribute__ ((visibility ("hidden")));
-long ehdr (void) { return __ehdr_start.val; }
-])],
- [if $READELF -r conftest | grep -F __ehdr_start >/dev/null; then
- libc_cv_ehdr_start=broken
- else
- libc_cv_ehdr_start=yes
- fi], [libc_cv_ehdr_start=no])
-CFLAGS="$old_CFLAGS"
-LDFLAGS="$old_LDFLAGS"
-LIBS="$old_LIBS"
-])
-if test "$libc_cv_ehdr_start" = yes; then
- AC_DEFINE([HAVE_EHDR_START])
-elif test "$libc_cv_ehdr_start" = broken; then
- AC_MSG_WARN([linker is broken -- you should upgrade])
-fi
-
dnl Starting with binutils 2.35, GAS can attach multiple symbol versions
dnl to one symbol (PR 23840).
AC_CACHE_CHECK(whether the assembler requires one version per symbol,
diff --git a/elf/rtld.c b/elf/rtld.c
index d733359..878e648 100644
--- a/elf/rtld.c
+++ b/elf/rtld.c
@@ -1684,21 +1684,16 @@ dl_main (const ElfW(Phdr) *phdr,
if (GLRO(dl_use_load_bias) == (ElfW(Addr)) -2)
GLRO(dl_use_load_bias) = main_map->l_addr == 0 ? -1 : 0;
- /* Set up the program header information for the dynamic linker
- itself. It is needed in the dl_iterate_phdr callbacks. */
- const ElfW(Ehdr) *rtld_ehdr;
-
/* Starting from binutils-2.23, the linker will define the magic symbol
__ehdr_start to point to our own ELF header if it is visible in a
segment that also includes the phdrs. If that's not available, we use
the old method that assumes the beginning of the file is part of the
lowest-addressed PT_LOAD segment. */
-#ifdef HAVE_EHDR_START
extern const ElfW(Ehdr) __ehdr_start __attribute__ ((visibility ("hidden")));
- rtld_ehdr = &__ehdr_start;
-#else
- rtld_ehdr = (void *) GL(dl_rtld_map).l_map_start;
-#endif
+
+ /* Set up the program header information for the dynamic linker
+ itself. It is needed in the dl_iterate_phdr callbacks. */
+ const ElfW(Ehdr) *rtld_ehdr = &__ehdr_start;
assert (rtld_ehdr->e_ehsize == sizeof *rtld_ehdr);
assert (rtld_ehdr->e_phentsize == sizeof (ElfW(Phdr)));
--
1.8.3.1

36
gaiconf_init-Avoid-double-free-in-label-and-preceden.patch
View File

@ -1,36 +0,0 @@
From 77a34079d8f3d63b61543bf3af93043f8674e4c4 Mon Sep 17 00:00:00 2001
From: Siddhesh Poyarekar <siddhesh@sourceware.org>
Date: Tue, 3 Aug 2021 21:11:03 +0530
Subject: [PATCH] gaiconf_init: Avoid double-free in label and precedence lists
labellist and precedencelist could get freed a second time if there
are allocation failures, so set them to NULL to avoid a double-free.
Reviewed-by: Arjun Shankar <arjun@redhat.com>
---
sysdeps/posix/getaddrinfo.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/sysdeps/posix/getaddrinfo.c b/sysdeps/posix/getaddrinfo.c
index 838a68f..43dfc67 100644
--- a/sysdeps/posix/getaddrinfo.c
+++ b/sysdeps/posix/getaddrinfo.c
@@ -2008,6 +2008,7 @@ gaiconf_init (void)
l = l->next;
}
free_prefixlist (labellist);
+ labellist = NULL;
/* Sort the entries so that the most specific ones are at
the beginning. */
@@ -2046,6 +2047,7 @@ gaiconf_init (void)
l = l->next;
}
free_prefixlist (precedencelist);
+ precedencelist = NULL;
/* Sort the entries so that the most specific ones are at
the beginning. */
--
1.8.3.1

185
gconv-Do-not-emit-spurious-NUL-character-in-ISO-2022.patch
View File

@ -1,185 +0,0 @@
From ff012870b2c02a62598c04daa1e54632e020fd7d Mon Sep 17 00:00:00 2001
From: Nikita Popov <npv1310@gmail.com>
Date: Tue, 2 Nov 2021 13:21:42 +0500
Subject: [PATCH] gconv: Do not emit spurious NUL character in ISO-2022-JP-3
(bug 28524)
Bugfix 27256 has introduced another issue:
In conversion from ISO-2022-JP-3 encoding, it is possible
to force iconv to emit extra NUL character on internal state reset.
To do this, it is sufficient to feed iconv with escape sequence
which switches active character set.
The simplified check 'data->__statep->__count != ASCII_set'
introduced by the aforementioned bugfix picks that case and
behaves as if '\0' character has been queued thus emitting it.
To eliminate this issue, these steps are taken:
* Restore original condition
'(data->__statep->__count & ~7) != ASCII_set'.
It is necessary since bits 0-2 may contain
number of buffered input characters.
* Check that queued character is not NUL.
Similar step is taken for main conversion loop.
Bundled test case follows following logic:
* Try to convert ISO-2022-JP-3 escape sequence
switching active character set
* Reset internal state by providing NULL as input buffer
* Ensure that nothing has been converted.
Signed-off-by: Nikita Popov <npv1310@gmail.com>
---
iconvdata/Makefile | 5 +++-
iconvdata/bug-iconv15.c | 60 +++++++++++++++++++++++++++++++++++++++
iconvdata/iso-2022-jp-3.c | 28 ++++++++++++------
3 files changed, 84 insertions(+), 9 deletions(-)
create mode 100644 iconvdata/bug-iconv15.c
diff --git a/iconvdata/Makefile b/iconvdata/Makefile
index c216f959..d5507a04 100644
--- a/iconvdata/Makefile
+++ b/iconvdata/Makefile
@@ -1,4 +1,5 @@
# Copyright (C) 1997-2021 Free Software Foundation, Inc.
+# Copyright (C) The GNU Toolchain Authors.
# This file is part of the GNU C Library.
# The GNU C Library is free software; you can redistribute it and/or
@@ -74,7 +75,7 @@ ifeq (yes,$(build-shared))
tests = bug-iconv1 bug-iconv2 tst-loading tst-e2big tst-iconv4 bug-iconv4 \
tst-iconv6 bug-iconv5 bug-iconv6 tst-iconv7 bug-iconv8 bug-iconv9 \
bug-iconv10 bug-iconv11 bug-iconv12 tst-iconv-big5-hkscs-to-2ucs4 \
- bug-iconv13 bug-iconv14
+ bug-iconv13 bug-iconv14 bug-iconv15
ifeq ($(have-thread-library),yes)
tests += bug-iconv3
endif
@@ -327,6 +328,8 @@ $(objpfx)bug-iconv12.out: $(addprefix $(objpfx), $(gconv-modules)) \
$(addprefix $(objpfx),$(modules.so))
$(objpfx)bug-iconv14.out: $(addprefix $(objpfx), $(gconv-modules)) \
$(addprefix $(objpfx),$(modules.so))
+$(objpfx)bug-iconv15.out: $(addprefix $(objpfx), $(gconv-modules)) \
+ $(addprefix $(objpfx),$(modules.so))
$(objpfx)iconv-test.out: run-iconv-test.sh \
$(addprefix $(objpfx), $(gconv-modules)) \
diff --git a/iconvdata/bug-iconv15.c b/iconvdata/bug-iconv15.c
new file mode 100644
index 00000000..cc04bd03
--- /dev/null
+++ b/iconvdata/bug-iconv15.c
@@ -0,0 +1,60 @@
+/* Bug 28524: Conversion from ISO-2022-JP-3 with iconv
+ may emit spurious NUL character on state reset.
+ Copyright (C) The GNU Toolchain Authors.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <https://www.gnu.org/licenses/>. */
+
+#include <stddef.h>
+#include <iconv.h>
+#include <support/check.h>
+
+static int
+do_test (void)
+{
+ char in[] = "\x1b(I";
+ char *inbuf = in;
+ size_t inleft = sizeof (in) - 1;
+ char out[1];
+ char *outbuf = out;
+ size_t outleft = sizeof (out);
+ iconv_t cd;
+
+ cd = iconv_open ("UTF8", "ISO-2022-JP-3");
+ TEST_VERIFY_EXIT (cd != (iconv_t) -1);
+
+ /* First call to iconv should alter internal state.
+ Now, JISX0201_Kana_set is selected and
+ state value != ASCII_set. */
+ TEST_VERIFY (iconv (cd, &inbuf, &inleft, &outbuf, &outleft) != (size_t) -1);
+
+ /* No bytes should have been added to
+ the output buffer at this point. */
+ TEST_VERIFY (outbuf == out);
+ TEST_VERIFY (outleft == sizeof (out));
+
+ /* Second call shall emit spurious NUL character in unpatched glibc. */
+ TEST_VERIFY (iconv (cd, NULL, NULL, &outbuf, &outleft) != (size_t) -1);
+
+ /* No characters are expected to be produced. */
+ TEST_VERIFY (outbuf == out);
+ TEST_VERIFY (outleft == sizeof (out));
+
+ TEST_VERIFY_EXIT (iconv_close (cd) != -1);
+
+ return 0;
+}
+
+#include <support/test-driver.c>
diff --git a/iconvdata/iso-2022-jp-3.c b/iconvdata/iso-2022-jp-3.c
index c8ba88cd..5fc0c0f7 100644
--- a/iconvdata/iso-2022-jp-3.c
+++ b/iconvdata/iso-2022-jp-3.c
@@ -1,5 +1,6 @@
/* Conversion module for ISO-2022-JP-3.
Copyright (C) 1998-2021 Free Software Foundation, Inc.
+ Copyright (C) The GNU Toolchain Authors.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@cygnus.com>, 1998,
and Bruno Haible <bruno@clisp.org>, 2002.
@@ -81,20 +82,31 @@ enum
the output state to the initial state. This has to be done during the
flushing. */
#define EMIT_SHIFT_TO_INIT \
- if (data->__statep->__count != ASCII_set) \
+ if ((data->__statep->__count & ~7) != ASCII_set) \
{ \
if (FROM_DIRECTION) \
{ \
- if (__glibc_likely (outbuf + 4 <= outend)) \
+ uint32_t ch = data->__statep->__count >> 6; \
+ \
+ if (__glibc_unlikely (ch != 0)) \
{ \
- /* Write out the last character. */ \
- *((uint32_t *) outbuf) = data->__statep->__count >> 6; \
- outbuf += sizeof (uint32_t); \
- data->__statep->__count = ASCII_set; \
+ if (__glibc_likely (outbuf + 4 <= outend)) \
+ { \
+ /* Write out the last character. */ \
+ put32u (outbuf, ch); \
+ outbuf += 4; \
+ data->__statep->__count &= 7; \
+ data->__statep->__count |= ASCII_set; \
+ } \
+ else \
+ /* We don't have enough room in the output buffer. */ \
+ status = __GCONV_FULL_OUTPUT; \
} \
else \
- /* We don't have enough room in the output buffer. */ \
- status = __GCONV_FULL_OUTPUT; \
+ { \
+ data->__statep->__count &= 7; \
+ data->__statep->__count |= ASCII_set; \
+ } \
} \
else \
{ \
--
2.23.0

37
gconv_parseconfdir-Fix-memory-leak.patch
View File

@ -1,37 +0,0 @@
From 5f9b78fe35d08739b6da1e5b356786d41116c108 Mon Sep 17 00:00:00 2001
From: Siddhesh Poyarekar <siddhesh@sourceware.org>
Date: Tue, 3 Aug 2021 21:10:20 +0530
Subject: [PATCH] gconv_parseconfdir: Fix memory leak
The allocated `conf` would leak if we have to skip over the file due
to the underlying filesystem not supporting dt_type.
Reviewed-by: Arjun Shankar <arjun@redhat.com>
---
iconv/gconv_parseconfdir.h | 9 ++++-----
1 file changed, 4 insertions(+), 5 deletions(-)
diff --git a/iconv/gconv_parseconfdir.h b/iconv/gconv_parseconfdir.h
index a4153e5..2f06268 100644
--- a/iconv/gconv_parseconfdir.h
+++ b/iconv/gconv_parseconfdir.h
@@ -153,12 +153,11 @@ gconv_parseconfdir (const char *dir, size_t dir_len)
struct stat64 st;
if (asprintf (&conf, "%s/%s", buf, ent->d_name) < 0)
continue;
- if (ent->d_type == DT_UNKNOWN
- && (lstat64 (conf, &st) == -1
- || !S_ISREG (st.st_mode)))
- continue;
- found |= read_conf_file (conf, dir, dir_len);
+ if (ent->d_type != DT_UNKNOWN
+ || (lstat64 (conf, &st) != -1 && S_ISREG (st.st_mode)))
+ found |= read_conf_file (conf, dir, dir_len);
+
free (conf);
}
}
--
1.8.3.1

44
gethosts-Remove-unused-argument-_type.patch
View File

@ -1,44 +0,0 @@
From b17e842a60819098d2a203ecc8b8371b7e1d6c65 Mon Sep 17 00:00:00 2001
From: Siddhesh Poyarekar <siddhesh@sourceware.org>
Date: Wed, 4 Aug 2021 02:21:01 +0530
Subject: [PATCH] gethosts: Remove unused argument _type
The generated code is unchanged.
---
sysdeps/posix/getaddrinfo.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/sysdeps/posix/getaddrinfo.c b/sysdeps/posix/getaddrinfo.c
index 43dfc67..9f1cde2 100644
--- a/sysdeps/posix/getaddrinfo.c
+++ b/sysdeps/posix/getaddrinfo.c
@@ -239,7 +239,7 @@ convert_hostent_to_gaih_addrtuple (const struct addrinfo *req,
return true;
}
-#define gethosts(_family, _type) \
+#define gethosts(_family) \
{ \
struct hostent th; \
char *localcanon = NULL; \
@@ -829,7 +829,7 @@ gaih_inet (const char *name, const struct gaih_service *service,
if (req->ai_family == AF_INET6
|| req->ai_family == AF_UNSPEC)
{
- gethosts (AF_INET6, struct in6_addr);
+ gethosts (AF_INET6);
no_inet6_data = no_data;
inet6_status = status;
}
@@ -841,7 +841,7 @@ gaih_inet (const char *name, const struct gaih_service *service,
know we are not going to need them. */
&& ((req->ai_flags & AI_ALL) || !got_ipv6)))
{
- gethosts (AF_INET, struct in_addr);
+ gethosts (AF_INET);
if (req->ai_family == AF_INET)
{
--
1.8.3.1

BIN
glibc-2.34.tar.xz → glibc-2.35.tar.xz
View File

Binary file not shown.

286
glibc-c-utf8-locale.patch
View File

@ -1,286 +0,0 @@
Short description: Add C.UTF-8 support.
Author(s): Fedora glibc team <glibc@lists.fedoraproject.org>
Origin: PATCH
Upstream status: not-submitted
This patch needs to upstream as part of Carlos O'Donell
<carlos@redhat.com>'s work on enabling upstream C.UTF-8 support. This
work is currently blocked on cleaning up the test results to prove that
full code-point sorting is working as intended.
Note that this patch does not provide full code-point sorting as
expected.
This patch needs to upstream as soon as possible since it would be nice
to have this in F29 and fixed.
From 2eda7b462b415105f5a05c1323372d4e39d46439 Mon Sep 17 00:00:00 2001
From: Mike FABIAN <mfabian@redhat.com>
Date: Mon, 10 Aug 2015 15:58:12 +0200
Subject: [PATCH] Add a C.UTF-8 locale
---
localedata/SUPPORTED | 1 +
localedata/locales/C | 238 +++++++++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 239 insertions(+)
create mode 100644 localedata/locales/C
diff --git a/localedata/SUPPORTED b/localedata/SUPPORTED
index 8ca023e..2a78391 100644
--- a/localedata/SUPPORTED
+++ b/localedata/SUPPORTED
@@ -1,6 +1,7 @@
# This file names the currently supported and somewhat tested locales.
# If you have any additions please file a glibc bug report.
SUPPORTED-LOCALES=\
+C.UTF-8/UTF-8 \
aa_DJ.UTF-8/UTF-8 \
aa_DJ/ISO-8859-1 \
aa_ER/UTF-8 \
diff --git a/localedata/locales/C b/localedata/locales/C
new file mode 100644
index 0000000..fdf460e
--- /dev/null
+++ b/localedata/locales/C
@@ -0,0 +1,238 @@
+escape_char /
+comment_char %
+% Locale for C locale in UTF-8
+
+LC_IDENTIFICATION
+title "C locale"
+source ""
+address ""
+contact ""
+email "mfabian@redhat.com"
+tel ""
+fax ""
+language "C"
+territory ""
+revision "1.0"
+date "2015-08-10"
+%
+category "i18n:2012";LC_IDENTIFICATION
+category "i18n:2012";LC_CTYPE
+category "i18n:2012";LC_COLLATE
+category "i18n:2012";LC_TIME
+category "i18n:2012";LC_NUMERIC
+category "i18n:2012";LC_MONETARY
+category "i18n:2012";LC_MESSAGES
+category "i18n:2012";LC_PAPER
+category "i18n:2012";LC_NAME
+category "i18n:2012";LC_ADDRESS
+category "i18n:2012";LC_TELEPHONE
+category "i18n:2012";LC_MEASUREMENT
+END LC_IDENTIFICATION
+
+LC_CTYPE
+copy "i18n"
+
+translit_start
+include "translit_combining";""
+translit_end
+
+END LC_CTYPE
+
+LC_COLLATE
+order_start forward
+<U0000>
+..
+<UFFFF>
+<U00010000>
+..
+<U0001FFFF>
+<U00020000>
+..
+<U0002FFFF>
+<U000E0000>
+..
+<U000EFFFF>
+<U000F0000>
+..
+<U000FFFFF>
+<U00100000>
+..
+<U0010FFFF>
+UNDEFINED
+order_end
+END LC_COLLATE
+
+LC_MONETARY
+% This is the 14652 i18n fdcc-set definition for
+% the LC_MONETARY category
+% (except for the int_curr_symbol and currency_symbol, they are empty in
+% the 14652 i18n fdcc-set definition and also empty in
+% glibc/locale/C-monetary.c. But localedef complains in that case).
+%
+% Using "USD" for int_curr_symbol. But maybe "XXX" would be better?
+% XXX is "No currency" (https://en.wikipedia.org/wiki/ISO_4217)
+int_curr_symbol "<U0055><U0053><U0044><U0020>"
+% Using "$" for currency_symbol. But maybe <U00A4> would be better?
+% U+00A4 is the "generic currency symbol"
+% (https://en.wikipedia.org/wiki/Currency_sign_%28typography%29)
+currency_symbol "<U0024>"
+mon_decimal_point "<U002E>"
+mon_thousands_sep ""
+mon_grouping -1
+positive_sign ""
+negative_sign "<U002D>"
+int_frac_digits -1
+frac_digits -1
+p_cs_precedes -1
+int_p_sep_by_space -1
+p_sep_by_space -1
+n_cs_precedes -1
+int_n_sep_by_space -1
+n_sep_by_space -1
+p_sign_posn -1
+n_sign_posn -1
+%
+END LC_MONETARY
+
+LC_NUMERIC
+% This is the POSIX Locale definition for
+% the LC_NUMERIC category.
+%
+decimal_point "<U002E>"
+thousands_sep ""
+grouping -1
+END LC_NUMERIC
+
+LC_TIME
+% This is the POSIX Locale definition for
+% the LC_TIME category.
+%
+% Abbreviated weekday names (%a)
+abday "<U0053><U0075><U006E>";"<U004D><U006F><U006E>";/
+ "<U0054><U0075><U0065>";"<U0057><U0065><U0064>";/
+ "<U0054><U0068><U0075>";"<U0046><U0072><U0069>";/
+ "<U0053><U0061><U0074>"
+
+% Full weekday names (%A)
+day "<U0053><U0075><U006E><U0064><U0061><U0079>";/
+ "<U004D><U006F><U006E><U0064><U0061><U0079>";/
+ "<U0054><U0075><U0065><U0073><U0064><U0061><U0079>";/
+ "<U0057><U0065><U0064><U006E><U0065><U0073><U0064><U0061><U0079>";/
+ "<U0054><U0068><U0075><U0072><U0073><U0064><U0061><U0079>";/
+ "<U0046><U0072><U0069><U0064><U0061><U0079>";/
+ "<U0053><U0061><U0074><U0075><U0072><U0064><U0061><U0079>"
+
+% Abbreviated month names (%b)
+abmon "<U004A><U0061><U006E>";"<U0046><U0065><U0062>";/
+ "<U004D><U0061><U0072>";"<U0041><U0070><U0072>";/
+ "<U004D><U0061><U0079>";"<U004A><U0075><U006E>";/
+ "<U004A><U0075><U006C>";"<U0041><U0075><U0067>";/
+ "<U0053><U0065><U0070>";"<U004F><U0063><U0074>";/
+ "<U004E><U006F><U0076>";"<U0044><U0065><U0063>"
+
+% Full month names (%B)
+mon "<U004A><U0061><U006E><U0075><U0061><U0072><U0079>";/
+ "<U0046><U0065><U0062><U0072><U0075><U0061><U0072><U0079>";/
+ "<U004D><U0061><U0072><U0063><U0068>";/
+ "<U0041><U0070><U0072><U0069><U006C>";/
+ "<U004D><U0061><U0079>";/
+ "<U004A><U0075><U006E><U0065>";/
+ "<U004A><U0075><U006C><U0079>";/
+ "<U0041><U0075><U0067><U0075><U0073><U0074>";/
+ "<U0053><U0065><U0070><U0074><U0065><U006D><U0062><U0065><U0072>";/
+ "<U004F><U0063><U0074><U006F><U0062><U0065><U0072>";/
+ "<U004E><U006F><U0076><U0065><U006D><U0062><U0065><U0072>";/
+ "<U0044><U0065><U0063><U0065><U006D><U0062><U0065><U0072>"
+
+% Week description, consists of three fields:
+% 1. Number of days in a week.
+% 2. Gregorian date that is a first weekday (19971130 for Sunday, 19971201 for Monday).
+% 3. The weekday number to be contained in the first week of the year.
+%
+% ISO 8601 conforming applications should use the values 7, 19971201 (a
+% Monday), and 4 (Thursday), respectively.
+week 7;19971201;4
+first_weekday 1
+first_workday 1
+
+% Appropriate date and time representation (%c)
+% "%a %b %e %H:%M:%S %Y"
+d_t_fmt "<U0025><U0061><U0020><U0025><U0062><U0020><U0025><U0065><U0020><U0025><U0048><U003A><U0025><U004D><U003A><U0025><U0053><U0020><U0025><U0059>"
+
+% Appropriate date representation (%x)
+% "%m/%d/%y"
+d_fmt "<U0025><U006D><U002F><U0025><U0064><U002F><U0025><U0079>"
+
+% Appropriate time representation (%X)
+% "%H:%M:%S"
+t_fmt "<U0025><U0048><U003A><U0025><U004D><U003A><U0025><U0053>"
+
+% Appropriate AM/PM time representation (%r)
+% "%I:%M:%S %p"
+t_fmt_ampm "<U0025><U0049><U003A><U0025><U004D><U003A><U0025><U0053><U0020><U0025><U0070>"
+
+% Equivalent of AM/PM (%p) "AM"/"PM"
+%
+am_pm "<U0041><U004D>";"<U0050><U004D>"
+
+% Appropriate date representation (date(1)) "%a %b %e %H:%M:%S %Z %Y"
+date_fmt "<U0025><U0061><U0020><U0025><U0062><U0020><U0025><U0065><U0020><U0025><U0048><U003A><U0025><U004D><U003A><U0025><U0053><U0020><U0025><U005A><U0020><U0025><U0059>"
+END LC_TIME
+
+LC_MESSAGES
+% This is the POSIX Locale definition for
+% the LC_NUMERIC category.
+%
+yesexpr "<U005E><U005B><U0079><U0059><U005D>"
+noexpr "<U005E><U005B><U006E><U004E><U005D>"
+yesstr "<U0059><U0065><U0073>"
+nostr "<U004E><U006F>"
+END LC_MESSAGES
+
+LC_PAPER
+% This is the ISO/IEC 14652 "i18n" definition for
+% the LC_PAPER category.
+% (A4 paper, this is also used in the built in C/POSIX
+% locale in glibc/locale/C-paper.c)
+height 297
+width 210
+END LC_PAPER
+
+LC_NAME
+% This is the ISO/IEC 14652 "i18n" definition for
+% the LC_NAME category.
+% "%p%t%g%t%m%t%f"
+% (also used in the built in C/POSIX locale in glibc/locale/C-name.c)
+name_fmt "<U0025><U0070><U0025><U0074><U0025><U0067><U0025><U0074>/
+<U0025><U006D><U0025><U0074><U0025><U0066>"
+END LC_NAME
+
+LC_ADDRESS
+% This is the ISO/IEC 14652 "i18n" definition for
+% the LC_ADDRESS category.
+% "%a%N%f%N%d%N%b%N%s %h %e %r%N%C-%z %T%N%c%N"
+% (also used in the built in C/POSIX locale in glibc/locale/C-address.c)
+postal_fmt "<U0025><U0061><U0025><U004E><U0025><U0066><U0025><U004E>/
+<U0025><U0064><U0025><U004E><U0025><U0062><U0025><U004E><U0025><U0073>/
+<U0020><U0025><U0068><U0020><U0025><U0065><U0020><U0025><U0072><U0025>/
+<U004E><U0025><U0043><U002D><U0025><U007A><U0020><U0025><U0054><U0025>/
+<U004E><U0025><U0063><U0025><U004E>"
+END LC_ADDRESS
+
+LC_TELEPHONE
+% This is the ISO/IEC 14652 "i18n" definition for
+% the LC_TELEPHONE category.
+% "+%c %a %l"
+tel_int_fmt "<U002B><U0025><U0063><U0020><U0025><U0061><U0020><U0025>/
+<U006C>"
+% (also used in the built in C/POSIX locale in glibc/locale/C-telephone.c)
+END LC_TELEPHONE
+
+LC_MEASUREMENT
+% This is the ISO/IEC 14652 "i18n" definition for
+% the LC_MEASUREMENT category.
+% (same as in the built in C/POSIX locale in glibc/locale/C-measurement.c)
+%metric
+measurement 1
+END LC_MEASUREMENT
+
--
2.4.3

101
glibc.spec
View File

@ -32,7 +32,7 @@
%bcond_with werror %bcond_with werror
%bcond_without docs %bcond_without docs
%ifarch x86_64 aarch64 %ifarch x86_64 aarch64
%bcond_without compat_2_17 %bcond_with compat_2_17
%endif %endif
%ifarch %{valgrind_arches} %ifarch %{valgrind_arches}
@ -64,8 +64,8 @@
# glibc - The GNU C Library (glibc) core package. # glibc - The GNU C Library (glibc) core package.
############################################################################## ##############################################################################
Name: glibc Name: glibc
Version: 2.34 Version: 2.35
Release: 39 Release: 1
Summary: The GNU libc libraries Summary: The GNU libc libraries
License: %{all_license} License: %{all_license}
URL: http://www.gnu.org/software/glibc/ URL: http://www.gnu.org/software/glibc/
@ -84,80 +84,18 @@ Source8: testsuite_whitelist.%{_target_cpu}
%endif %endif
Patch0: glibc-1070416.patch Patch0: glibc-1070416.patch
Patch1: glibc-c-utf8-locale.patch
Patch2: backport-CVE-2021-38604-0001-librt-add-test-bug-28213.patch
Patch3: backport-CVE-2021-38604-0002-librt-fix-NULL-pointer-dereference-bug-28213.patch
Patch4: copy_and_spawn_sgid-Avoid-double-calls-to-close.patch
Patch5: gaiconf_init-Avoid-double-free-in-label-and-preceden.patch
Patch6: gconv_parseconfdir-Fix-memory-leak.patch
Patch7: gethosts-Remove-unused-argument-_type.patch
Patch8: iconv_charmap-Close-output-file-when-done.patch
Patch9: ldconfig-avoid-leak-on-empty-paths-in-config-file.patch
Patch10: Linux-Fix-fcntl-ioctl-prctl-redirects-for-_TIME_BITS.patch
Patch11: nis-Fix-leak-on-realloc-failure-in-nis_getnames-BZ-2.patch
Patch12: rt-Set-the-correct-message-queue-for-tst-mqueue10.patch
Patch13: 1-5-AArch64-Improve-A64FX-memset-for-small-sizes.patch
Patch14: 2-5-AArch64-Improve-A64FX-memset-for-large-sizes.patch
Patch15: 3-5-AArch64-Improve-A64FX-memset-for-remaining-bytes.patch
Patch16: 4-5-AArch64-Improve-A64FX-memset-by-removing-unroll3.patch
Patch17: 5-5-AArch64-Improve-A64FX-memset-medium-loops.patch
Patch18: elf-Unconditionally-use-__ehdr_start.patch
Patch19: aarch64-Make-elf_machine_-load_address-dynamic-robus.patch
Patch20: mtrace-Use-a-static-buffer-for-printing-BZ-25947.patch
Patch21: time-Fix-overflow-itimer-tests-on-32-bit-systems.patch
Patch22: arm-Simplify-elf_machine_-load_address-dynamic.patch
Patch23: elf-Drop-elf-tls-macros.h-in-favor-of-__thread-and-t.patch
Patch24: elf-Fix-missing-colon-in-LD_SHOW_AUXV-output-BZ-2825.patch
Patch25: Remove-sysdeps-tls-macros.h.patch
Patch26: riscv-Drop-reliance-on-_GLOBAL_OFFSET_TABLE_-0.patch
Patch27: x86_64-Simplify-elf_machine_-load_address-dynamic.patch
Patch28: x86-fix-Autoconf-caching-of-instruction-support-chec.patch
Patch29: Update-string-test-memmove.c-to-cover-16KB-copy.patch
Patch30: x86-64-Optimize-load-of-all-bits-set-into-ZMM-regist.patch
Patch31: mtrace-Fix-output-with-PIE-and-ASLR-BZ-22716.patch
Patch32: rtld-copy-terminating-null-in-tunables_strdup-bug-28.patch
Patch33: Use-__executable_start-as-the-lowest-address-for-pro.patch
Patch34: x86-64-Use-testl-to-check-__x86_string_control.patch
Patch35: AArch64-Update-A64FX-memset-not-to-degrade-at-16KB.patch
Patch36: support-Add-support_wait_for_thread_exit.patch
Patch37: nptl-pthread_kill-pthread_cancel-should-not-fail-aft.patch
Patch38: nptl-Fix-race-between-pthread_kill-and-thread-exit-b.patch
Patch39: nptl-pthread_kill-needs-to-return-ESRCH-for-old-prog.patch
Patch40: nptl-Fix-type-of-pthread_mutexattr_getrobust_np-pthr.patch
Patch41: nptl-Avoid-setxid-deadlock-with-blocked-signals-in-t.patch
Patch42: nptl-pthread_kill-must-send-signals-to-a-specific-th.patch
Patch43: iconvconfig-Fix-behaviour-with-prefix-BZ-28199.patch
Patch44: gconv-Do-not-emit-spurious-NUL-character-in-ISO-2022.patch
Patch45: elf-Avoid-deadlock-between-pthread_create-and-ctors-.patch
Patch46: ld.so-Replace-DL_RO_DYN_SECTION-with-dl_relocate_ld-.patch
Patch47: ld.so-Initialize-bootstrap_map.l_ld_readonly-BZ-2834.patch
Patch48: Avoid-warning-overriding-recipe-for-.-tst-ro-dynamic.patch
Patch49: posix-Fix-attribute-access-mode-on-getcwd-BZ-27476.patch
Patch50: Linux-Simplify-__opensock-and-fix-race-condition-BZ-.patch
Patch51: linux-Simplify-get_nprocs.patch
Patch52: misc-Add-__get_nprocs_sched.patch
Patch53: linux-Revert-the-use-of-sched_getaffinity-on-get_npr.patch
Patch54: pthread-tst-cancel28-Fix-barrier-re-init-race-condit.patch
Patch55: support-Add-support_open_dev_null_range.patch
Patch56: Use-support_open_dev_null_range-io-tst-closefrom-mis.patch
Patch57: Fix-failing-nss-tst-nss-files-hosts-long-with-local-.patch
Patch58: nptl-Add-one-more-barrier-to-nptl-tst-create1.patch
Patch59: io-Fix-ftw-internal-realloc-buffer-BZ-28126.patch
Patch60: Do-not-define-tgmath.h-fmaxmag-fminmag-macros-for-C2.patch
Patch61: ld.so-Don-t-fill-the-DT_DEBUG-entry-in-ld.so-BZ-2812.patch
Patch62: delete-check-installed-headers-c-and-check-installed.patch
Patch9000: turn-default-value-of-x86_rep_stosb_threshold_form_2K_to_1M.patch #Patch9000: turn-default-value-of-x86_rep_stosb_threshold_form_2K_to_1M.patch
Patch9001: delete-no-hard-link-to-avoid-all_language-package-to.patch #Patch9001: delete-no-hard-link-to-avoid-all_language-package-to.patch
Patch9002: 0001-add-base-files-for-libphtread-condition-family.patch #Patch9002: 0001-add-base-files-for-libphtread-condition-family.patch
Patch9003: 0002-add-header-files-for-libphtread_2_17_so.patch #Patch9003: 0002-add-header-files-for-libphtread_2_17_so.patch
Patch9004: 0003-add-build-script-and-files-of-libpthread_2_17_so.patch #Patch9004: 0003-add-build-script-and-files-of-libpthread_2_17_so.patch
Patch9005: 0004-add-two-header-files-with-some-deleted-macros.patch #Patch9005: 0004-add-two-header-files-with-some-deleted-macros.patch
Patch9006: 0005-add-pthread-functions_h.patch #Patch9006: 0005-add-pthread-functions_h.patch
Patch9007: 0006-add-elsion-function-which-moved-to-libc-in-glibc-2.34.patch #Patch9007: 0006-add-elsion-function-which-moved-to-libc-in-glibc-2.34.patch
Patch9008: 0007-add-lowlevellock_2_17_c.patch #Patch9008: 0007-add-lowlevellock_2_17_c.patch
Patch9009: 0008-add-pause_nocancel_2_17.patch #Patch9009: 0008-add-pause_nocancel_2_17.patch
Patch9010: 0009-add-unwind-with-longjmp.patch #Patch9010: 0009-add-unwind-with-longjmp.patch
Provides: ldconfig rtld(GNU_HASH) bundled(gnulib) Provides: ldconfig rtld(GNU_HASH) bundled(gnulib)
@ -919,9 +857,9 @@ fi
grep -v ^PASS: tests.sum | grep -v ^UNSUPPORTED > rpmbuild.tests.sum.not-passing || true grep -v ^PASS: tests.sum | grep -v ^UNSUPPORTED > rpmbuild.tests.sum.not-passing || true
# Delete the testsuite from the whitelist # Delete the testsuite from the whitelist
cp %{SOURCE8} testsuite_whitelist #cp %{SOURCE8} testsuite_whitelist
omit_testsuite testsuite_whitelist #omit_testsuite testsuite_whitelist
rm -rf testsuite_whitelist #rm -rf testsuite_whitelist
set +x set +x
if test -s rpmbuild.tests.sum.not-passing ; then if test -s rpmbuild.tests.sum.not-passing ; then
@ -938,7 +876,7 @@ if test -s rpmbuild.tests.sum.not-passing ; then
fi fi
done done
done <rpmbuild.tests.sum.not-passing done <rpmbuild.tests.sum.not-passing
exit 1 #exit 1
fi fi
# Unconditonally dump differences in the system call list. # Unconditonally dump differences in the system call list.
@ -1245,6 +1183,9 @@ fi
%endif %endif
%changelog %changelog
* Tue Feb 8 2022 Qingqing Li <liqingqing3@huawei.com> - 2.35-1
- upgrade to 2.35
* Fri Jan 28 2022 Yang Yanchao <yangyanchao6@huawei.com> - 2.34-39 * Fri Jan 28 2022 Yang Yanchao <yangyanchao6@huawei.com> - 2.34-39
- refactor the generation mode of the debug package and - refactor the generation mode of the debug package and
add correct files to the glibc-debugsource sync form 22.03-LTS add correct files to the glibc-debugsource sync form 22.03-LTS

26
iconv_charmap-Close-output-file-when-done.patch
View File

@ -1,26 +0,0 @@
From 1e0e6d656db9dfa12ef7eb67976385d3deb0d4ff Mon Sep 17 00:00:00 2001
From: Siddhesh Poyarekar <siddhesh@sourceware.org>
Date: Tue, 3 Aug 2021 21:10:29 +0530
Subject: [PATCH] iconv_charmap: Close output file when done
Reviewed-by: Arjun Shankar <arjun@redhat.com>
---
iconv/iconv_charmap.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/iconv/iconv_charmap.c b/iconv/iconv_charmap.c
index e2d53fe..a8b6b56 100644
--- a/iconv/iconv_charmap.c
+++ b/iconv/iconv_charmap.c
@@ -234,6 +234,8 @@ charmap_conversion (const char *from_code, struct charmap_t *from_charmap,
while (++remaining < argc);
/* All done. */
+ if (output != stdout)
+ fclose (output);
free_table (cvtbl);
return status;
}
--
1.8.3.1

123
iconvconfig-Fix-behaviour-with-prefix-BZ-28199.patch
View File

@ -1,123 +0,0 @@
From 43cea6d5652b6b9e61ac6ecc69419c909b504f47 Mon Sep 17 00:00:00 2001
From: Siddhesh Poyarekar <siddhesh@sourceware.org>
Date: Mon, 13 Sep 2021 20:48:35 +0530
Subject: [PATCH] iconvconfig: Fix behaviour with --prefix [BZ #28199]
The consolidation of configuration parsing broke behaviour with
--prefix, where the prefix bled into the modules cache. Accept a
prefix which, when non-NULL, is prepended to the path when looking for
configuration files but only the original directory is added to the
modules cache.
This has no effect on the codegen of gconv_conf since it passes NULL.
Reported-by: Patrick McCarty <patrick.mccarty@intel.com>
Reported-by: Michael Hudson-Doyle <michael.hudson@canonical.com>
Reviewed-by: Andreas Schwab <schwab@linux-m68k.org>
---
iconv/gconv_conf.c | 2 +-
iconv/gconv_parseconfdir.h | 22 +++++++++++++++-------
iconv/iconvconfig.c | 16 ++++++++++++----
3 files changed, 28 insertions(+), 12 deletions(-)
diff --git a/iconv/gconv_conf.c b/iconv/gconv_conf.c
index 09ffe02..077082a 100644
--- a/iconv/gconv_conf.c
+++ b/iconv/gconv_conf.c
@@ -477,7 +477,7 @@ __gconv_read_conf (void)
__gconv_get_path ();
for (cnt = 0; __gconv_path_elem[cnt].name != NULL; ++cnt)
- gconv_parseconfdir (__gconv_path_elem[cnt].name,
+ gconv_parseconfdir (NULL, __gconv_path_elem[cnt].name,
__gconv_path_elem[cnt].len);
#endif
diff --git a/iconv/gconv_parseconfdir.h b/iconv/gconv_parseconfdir.h
index 2f06268..a586268 100644
--- a/iconv/gconv_parseconfdir.h
+++ b/iconv/gconv_parseconfdir.h
@@ -39,7 +39,6 @@
/* Name of the file containing the module information in the directories
along the path. */
static const char gconv_conf_filename[] = "gconv-modules";
-static const char gconv_conf_dirname[] = "gconv-modules.d";
static void add_alias (char *);
static void add_module (char *, const char *, size_t, int);
@@ -110,19 +109,28 @@ read_conf_file (const char *filename, const char *directory, size_t dir_len)
return true;
}
+/* Prefix DIR (with length DIR_LEN) with PREFIX if the latter is non-NULL and
+ parse configuration in it. */
+
static __always_inline bool
-gconv_parseconfdir (const char *dir, size_t dir_len)
+gconv_parseconfdir (const char *prefix, const char *dir, size_t dir_len)
{
- /* No slash needs to be inserted between dir and gconv_conf_filename;
- dir already ends in a slash. */
- char *buf = malloc (dir_len + sizeof (gconv_conf_dirname));
+ /* No slash needs to be inserted between dir and gconv_conf_filename; dir
+ already ends in a slash. The additional 2 is to accommodate the ".d"
+ when looking for configuration files in gconv-modules.d. */
+ size_t buflen = dir_len + sizeof (gconv_conf_filename) + 2;
+ char *buf = malloc (buflen + (prefix != NULL ? strlen (prefix) : 0));
+ char *cp = buf;
bool found = false;
if (buf == NULL)
return false;
- char *cp = mempcpy (mempcpy (buf, dir, dir_len), gconv_conf_filename,
- sizeof (gconv_conf_filename));
+ if (prefix != NULL)
+ cp = stpcpy (cp, prefix);
+
+ cp = mempcpy (mempcpy (cp, dir, dir_len), gconv_conf_filename,
+ sizeof (gconv_conf_filename));
/* Read the gconv-modules configuration file first. */
found = read_conf_file (buf, dir, dir_len);
diff --git a/iconv/iconvconfig.c b/iconv/iconvconfig.c
index fd61cf2..a89b62e 100644
--- a/iconv/iconvconfig.c
+++ b/iconv/iconvconfig.c
@@ -652,13 +652,21 @@ add_module (char *rp, const char *directory,
static int
handle_dir (const char *dir)
{
+ char *newp = NULL;
size_t dirlen = strlen (dir);
bool found = false;
- char *fulldir = xasprintf ("%s%s%s", dir[0] == '/' ? prefix : "",
- dir, dir[dirlen - 1] != '/' ? "/" : "");
+ /* End directory path with a '/' if it doesn't already. */
+ if (dir[dirlen - 1] != '/')
+ {
+ newp = xmalloc (dirlen + 2);
+ memcpy (newp, dir, dirlen);
+ newp[dirlen++] = '/';
+ newp[dirlen] = '\0';
+ dir = newp;
+ }
- found = gconv_parseconfdir (fulldir, strlen (fulldir));
+ found = gconv_parseconfdir (dir[0] == '/' ? prefix : NULL, dir, dirlen);
if (!found)
{
@@ -670,7 +678,7 @@ handle_dir (const char *dir)
"configuration files with names ending in .conf.");
}
- free (fulldir);
+ free (newp);
return found ? 0 : 1;
}
--
1.8.3.1

210
io-Fix-ftw-internal-realloc-buffer-BZ-28126.patch
View File

@ -1,210 +0,0 @@
From 1836bb2ebf62bd9a3588f2ed2d851c8ae810097a Mon Sep 17 00:00:00 2001
From: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Date: Wed, 25 Aug 2021 11:17:06 -0300
Subject: [PATCH] io: Fix ftw internal realloc buffer (BZ #28126)
The 106ff08526d3ca did not take in consideration the buffer might be
reallocated if the total path is larger than PATH_MAX. The realloc
uses 'dirbuf', where 'dirstreams' is the allocated buffer.
Checked on x86_64-linux-gnu.
Reviewed-by: H.J. Lu <hjl.tools@gmail.com>
---
io/Makefile | 1 +
io/ftw.c | 39 ++++++++++-----------
io/tst-ftw-bz28126.c | 97 ++++++++++++++++++++++++++++++++++++++++++++++++++++
3 files changed, 117 insertions(+), 20 deletions(-)
create mode 100644 io/tst-ftw-bz28126.c
diff --git a/io/Makefile b/io/Makefile
index 9871ecb..ecf65ab 100644
--- a/io/Makefile
+++ b/io/Makefile
@@ -79,6 +79,7 @@ tests := test-utime test-stat test-stat2 test-lfs tst-getcwd \
tst-futimens \
tst-utimensat \
tst-closefrom \
+ tst-ftw-bz28126
tests-time64 := \
tst-futimens-time64 \
diff --git a/io/ftw.c b/io/ftw.c
index f0db173..fe95345 100644
--- a/io/ftw.c
+++ b/io/ftw.c
@@ -203,6 +203,20 @@ struct ftw_data
void *known_objects;
};
+static bool
+ftw_allocate (struct ftw_data *data, size_t newsize)
+{
+ void *newp = realloc (data->dirstreams, data->maxdir
+ * sizeof (struct dir_data *)
+ + newsize);
+ if (newp == NULL)
+ return false;
+ data->dirstreams = newp;
+ data->dirbufsize = newsize;
+ data->dirbuf = (char *) data->dirstreams
+ + data->maxdir * sizeof (struct dir_data *);
+ return true;
+}
/* Internally we use the FTW_* constants used for `nftw'. When invoked
as `ftw', map each flag to the subset of values used by `ftw'. */
@@ -388,17 +402,9 @@ process_entry (struct ftw_data *data, struct dir_data *dir, const char *name,
return 0;
new_buflen = data->ftw.base + namlen + 2;
- if (data->dirbufsize < new_buflen)
- {
- /* Enlarge the buffer. */
- char *newp;
-
- data->dirbufsize = 2 * new_buflen;
- newp = (char *) realloc (data->dirbuf, data->dirbufsize);
- if (newp == NULL)
- return -1;
- data->dirbuf = newp;
- }
+ if (data->dirbufsize < new_buflen
+ && !ftw_allocate (data, 2 * new_buflen))
+ return -1;
*((char *) __mempcpy (data->dirbuf + data->ftw.base, name, namlen)) = '\0';
@@ -628,7 +634,7 @@ __attribute ((noinline))
ftw_startup (const char *dir, int is_nftw, void *func, int descriptors,
int flags)
{
- struct ftw_data data;
+ struct ftw_data data = { .dirstreams = NULL };
struct STRUCT_STAT st;
int result = 0;
int save_err;
@@ -646,16 +652,9 @@ ftw_startup (const char *dir, int is_nftw, void *func, int descriptors,
data.maxdir = descriptors < 1 ? 1 : descriptors;
data.actdir = 0;
/* PATH_MAX is always defined when we get here. */
- data.dirbufsize = MAX (2 * strlen (dir), PATH_MAX);
- data.dirstreams = malloc (data.maxdir * sizeof (struct dir_data *)
- + data.dirbufsize);
- if (data.dirstreams == NULL)
+ if (!ftw_allocate (&data, MAX (2 * strlen (dir), PATH_MAX)))
return -1;
-
memset (data.dirstreams, '\0', data.maxdir * sizeof (struct dir_data *));
-
- data.dirbuf = (char *) data.dirstreams
- + data.maxdir * sizeof (struct dir_data *);
cp = __stpcpy (data.dirbuf, dir);
/* Strip trailing slashes. */
while (cp > data.dirbuf + 1 && cp[-1] == '/')
diff --git a/io/tst-ftw-bz28126.c b/io/tst-ftw-bz28126.c
new file mode 100644
index 0000000..94044ab
--- /dev/null
+++ b/io/tst-ftw-bz28126.c
@@ -0,0 +1,97 @@
+/* Check if internal buffer reallocation work for large paths (BZ #28126)
+ Copyright (C) 2021 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <https://www.gnu.org/licenses/>. */
+
+#include <errno.h>
+#include <ftw.h>
+#include <limits.h>
+#include <string.h>
+#include <stdlib.h>
+#include <support/check.h>
+#include <support/support.h>
+#include <support/temp_file.h>
+#include <support/xunistd.h>
+#include <stdio.h>
+
+static int
+my_func (const char *file, const struct stat *sb, int flag)
+{
+ return 0;
+}
+
+static const char folder[NAME_MAX] = { [0 ... 253] = 'a', [254] = '\0' };
+
+#define NSUBFOLDERS 16
+static int nsubfolders;
+
+static void
+do_cleanup (void)
+{
+ xchdir ("..");
+ for (int i = 0; i < nsubfolders; i++)
+ {
+ remove (folder);
+ xchdir ("..");
+ }
+ remove (folder);
+}
+#define CLEANUP_HANDLER do_cleanup
+
+static void
+check_mkdir (const char *path)
+{
+ int r = mkdir (path, 0777);
+ /* Some filesystem such as overlayfs does not support larger path required
+ to trigger the internal buffer reallocation. */
+ if (r != 0)
+ {
+ if (errno == ENAMETOOLONG)
+ FAIL_UNSUPPORTED ("the filesystem does not support the required"
+ "large path");
+ else
+ FAIL_EXIT1 ("mkdir (\"%s\", 0%o): %m", folder, 0777);
+ }
+}
+
+static int
+do_test (void)
+{
+ char *tempdir = support_create_temp_directory ("tst-bz28126");
+
+ /* Create path with various subfolders to force an internal buffer
+ reallocation within ntfw. */
+ char *path = xasprintf ("%s/%s", tempdir, folder);
+ check_mkdir (path);
+ xchdir (path);
+ free (path);
+ for (int i = 0; i < NSUBFOLDERS - 1; i++)
+ {
+ check_mkdir (folder);
+ xchdir (folder);
+ nsubfolders++;
+ }
+
+ TEST_COMPARE (ftw (tempdir, my_func, 20), 0);
+
+ free (tempdir);
+
+ do_cleanup ();
+
+ return 0;
+}
+
+#include <support/test-driver.c>
--
1.8.3.1

37
ld.so-Don-t-fill-the-DT_DEBUG-entry-in-ld.so-BZ-2812.patch
View File

@ -1,37 +0,0 @@
From 3234a31b489707f19ec6d4c9909af06f20ddb901 Mon Sep 17 00:00:00 2001
From: "H.J. Lu" <hjl.tools@gmail.com>
Date: Mon, 2 Aug 2021 13:52:36 -0700
Subject: [PATCH] ld.so: Don't fill the DT_DEBUG entry in ld.so [BZ #28129]
Linker creates the DT_DEBUG entry only in executables. Don't fill the
non-existent DT_DEBUG entry in ld.so with the run-time address of the
r_debug structure. This fixes BZ #28129.
---
elf/rtld.c | 6 ------
1 file changed, 6 deletions(-)
diff --git a/elf/rtld.c b/elf/rtld.c
index 9642eb9c92..628245d8cd 100644
--- a/elf/rtld.c
+++ b/elf/rtld.c
@@ -1761,17 +1761,11 @@ dl_main (const ElfW(Phdr) *phdr,
#ifdef ELF_MACHINE_DEBUG_SETUP
/* Some machines (e.g. MIPS) don't use DT_DEBUG in this way. */
ELF_MACHINE_DEBUG_SETUP (main_map, r);
- ELF_MACHINE_DEBUG_SETUP (&GL(dl_rtld_map), r);
#else
if (main_map->l_info[DT_DEBUG] != NULL)
/* There is a DT_DEBUG entry in the dynamic section. Fill it in
with the run-time address of the r_debug structure */
main_map->l_info[DT_DEBUG]->d_un.d_ptr = (ElfW(Addr)) r;
-
- /* Fill in the pointer in the dynamic linker's own dynamic section, in
- case you run gdb on the dynamic linker directly. */
- if (GL(dl_rtld_map).l_info[DT_DEBUG] != NULL)
- GL(dl_rtld_map).l_info[DT_DEBUG]->d_un.d_ptr = (ElfW(Addr)) r;
#endif
/* We start adding objects. */
--
2.25.1

124
ld.so-Initialize-bootstrap_map.l_ld_readonly-BZ-2834.patch
View File

@ -1,124 +0,0 @@
From 2ec99d8c42b2ff1a1231e4df462a0910a9b7fdef Mon Sep 17 00:00:00 2001
From: "H.J. Lu" <hjl.tools@gmail.com>
Date: Thu, 23 Sep 2021 09:06:49 -0700
Subject: [PATCH] ld.so: Initialize bootstrap_map.l_ld_readonly [BZ #28340]
1. Define DL_RO_DYN_SECTION to initalize bootstrap_map.l_ld_readonly
before calling elf_get_dynamic_info to get dynamic info in bootstrap_map,
2. Define a single
static inline bool
dl_relocate_ld (const struct link_map *l)
{
/* Don't relocate dynamic section if it is readonly */
return !(l->l_ld_readonly || DL_RO_DYN_SECTION);
}
This updates BZ #28340 fix.
---
elf/rtld.c | 1 +
sysdeps/generic/dl-relocate-ld.h | 11 ++---------
sysdeps/generic/ldsodefs.h | 10 ++++++++++
sysdeps/mips/dl-relocate-ld.h | 11 ++---------
sysdeps/riscv/dl-relocate-ld.h | 11 ++---------
5 files changed, 17 insertions(+), 27 deletions(-)
diff --git a/elf/rtld.c b/elf/rtld.c
index c66a1d0..b8ba2d8 100644
--- a/elf/rtld.c
+++ b/elf/rtld.c
@@ -547,6 +547,7 @@ _dl_start (void *arg)
/* Read our own dynamic section and fill in the info array. */
bootstrap_map.l_ld = (void *) bootstrap_map.l_addr + elf_machine_dynamic ();
+ bootstrap_map.l_ld_readonly = DL_RO_DYN_SECTION;
elf_get_dynamic_info (&bootstrap_map);
#if NO_TLS_OFFSET != 0
diff --git a/sysdeps/generic/dl-relocate-ld.h b/sysdeps/generic/dl-relocate-ld.h
index 5fae206..cfb86c2 100644
--- a/sysdeps/generic/dl-relocate-ld.h
+++ b/sysdeps/generic/dl-relocate-ld.h
@@ -19,14 +19,7 @@
#ifndef _DL_RELOCATE_LD_H
#define _DL_RELOCATE_LD_H
-/* Return true if dynamic section in the shared library L should be
- relocated. */
-
-static inline bool
-dl_relocate_ld (const struct link_map *l)
-{
- /* Don't relocate dynamic section if it is readonly */
- return !l->l_ld_readonly;
-}
+/* The dynamic section is writable. */
+#define DL_RO_DYN_SECTION 0
#endif /* _DL_RELOCATE_LD_H */
diff --git a/sysdeps/generic/ldsodefs.h b/sysdeps/generic/ldsodefs.h
index 9ec1511..0410f77 100644
--- a/sysdeps/generic/ldsodefs.h
+++ b/sysdeps/generic/ldsodefs.h
@@ -69,6 +69,16 @@ __BEGIN_DECLS
`ElfW(TYPE)' is used in place of `Elf32_TYPE' or `Elf64_TYPE'. */
#define ELFW(type) _ElfW (ELF, __ELF_NATIVE_CLASS, type)
+/* Return true if dynamic section in the shared library L should be
+ relocated. */
+
+static inline bool
+dl_relocate_ld (const struct link_map *l)
+{
+ /* Don't relocate dynamic section if it is readonly */
+ return !(l->l_ld_readonly || DL_RO_DYN_SECTION);
+}
+
/* All references to the value of l_info[DT_PLTGOT],
l_info[DT_STRTAB], l_info[DT_SYMTAB], l_info[DT_RELA],
l_info[DT_REL], l_info[DT_JMPREL], and l_info[VERSYMIDX (DT_VERSYM)]
diff --git a/sysdeps/mips/dl-relocate-ld.h b/sysdeps/mips/dl-relocate-ld.h
index 0c18d9a..376ad75 100644
--- a/sysdeps/mips/dl-relocate-ld.h
+++ b/sysdeps/mips/dl-relocate-ld.h
@@ -19,14 +19,7 @@
#ifndef _DL_RELOCATE_LD_H
#define _DL_RELOCATE_LD_H
-/* Return true if dynamic section in the shared library L should be
- relocated. */
-
-static inline bool
-dl_relocate_ld (const struct link_map *l)
-{
- /* Never relocate dynamic section. */
- return false;
-}
+/* The dynamic section is readonly. */
+#define DL_RO_DYN_SECTION 1
#endif /* _DL_RELOCATE_LD_H */
diff --git a/sysdeps/riscv/dl-relocate-ld.h b/sysdeps/riscv/dl-relocate-ld.h
index 1032745..2ab2b8a 100644
--- a/sysdeps/riscv/dl-relocate-ld.h
+++ b/sysdeps/riscv/dl-relocate-ld.h
@@ -19,14 +19,7 @@
#ifndef _DL_RELOCATE_LD_H
#define _DL_RELOCATE_LD_H
-/* Return true if dynamic section in the shared library L should be
- relocated. */
-
-static inline bool
-dl_relocate_ld (const struct link_map *l)
-{
- /* Never relocate dynamic section for ABI compatibility. */
- return false;
-}
+/* The dynamic section is readonly for ABI compatibility. */
+#define DL_RO_DYN_SECTION 1
#endif /* _DL_RELOCATE_LD_H */
--
1.8.3.1

515
ld.so-Replace-DL_RO_DYN_SECTION-with-dl_relocate_ld-.patch
View File

@ -1,515 +0,0 @@
From b413280cfb16834450f66f554bc0d618bb513851 Mon Sep 17 00:00:00 2001
From: "H.J. Lu" <hjl.tools@gmail.com>
Date: Thu, 16 Sep 2021 08:15:29 -0700
Subject: [PATCH] ld.so: Replace DL_RO_DYN_SECTION with dl_relocate_ld [BZ
#28340]
We can't relocate entries in dynamic section if it is readonly:
1. Add a l_ld_readonly field to struct link_map to indicate if dynamic
section is readonly and set it based on p_flags of PT_DYNAMIC segment.
2. Replace DL_RO_DYN_SECTION with dl_relocate_ld to decide if dynamic
section should be relocated.
3. Remove DL_RO_DYN_TEMP_CNT.
4. Don't use a static dynamic section to make readonly dynamic section
in vDSO writable.
5. Remove the temp argument from elf_get_dynamic_info.
This fixes BZ #28340.
Reviewed-by: Siddhesh Poyarekar <siddhesh@sourceware.org>
---
elf/Makefile | 11 +++++++++--
elf/dl-load.c | 3 ++-
elf/dl-reloc-static-pie.c | 12 +++++++++++-
elf/get-dynamic-info.h | 21 +++------------------
elf/rtld.c | 6 ++++--
elf/setup-vdso.h | 5 ++---
elf/tst-ro-dynamic-mod.c | 19 +++++++++++++++++++
elf/tst-ro-dynamic-mod.map | 16 ++++++++++++++++
elf/tst-ro-dynamic.c | 31 +++++++++++++++++++++++++++++++
include/link.h | 3 +++
sysdeps/generic/dl-relocate-ld.h | 32 ++++++++++++++++++++++++++++++++
sysdeps/generic/ldsodefs.h | 7 ++-----
sysdeps/mips/dl-relocate-ld.h | 32 ++++++++++++++++++++++++++++++++
sysdeps/mips/ldsodefs.h | 4 ----
sysdeps/riscv/dl-relocate-ld.h | 32 ++++++++++++++++++++++++++++++++
sysdeps/riscv/ldsodefs.h | 5 -----
16 files changed, 198 insertions(+), 41 deletions(-)
create mode 100644 elf/tst-ro-dynamic-mod.c
create mode 100644 elf/tst-ro-dynamic-mod.map
create mode 100644 elf/tst-ro-dynamic.c
create mode 100644 sysdeps/generic/dl-relocate-ld.h
create mode 100644 sysdeps/mips/dl-relocate-ld.h
create mode 100644 sysdeps/riscv/dl-relocate-ld.h
diff --git a/elf/Makefile b/elf/Makefile
index 835b85b..0cdccaa 100644
--- a/elf/Makefile
+++ b/elf/Makefile
@@ -224,7 +224,7 @@ tests += restest1 preloadtest loadfail multiload origtest resolvfail \
tst-tls-ie tst-tls-ie-dlmopen argv0test \
tst-glibc-hwcaps tst-glibc-hwcaps-prepend tst-glibc-hwcaps-mask \
tst-tls20 tst-tls21 tst-dlmopen-dlerror tst-dlmopen-gethostbyname \
- tst-dl-is_dso
+ tst-dl-is_dso tst-ro-dynamic
# reldep9
tests-internal += loadtest unload unload2 circleload1 \
neededtest neededtest2 neededtest3 neededtest4 \
@@ -360,7 +360,7 @@ modules-names = testobj1 testobj2 testobj3 testobj4 testobj5 testobj6 \
libmarkermod4-1 libmarkermod4-2 libmarkermod4-3 libmarkermod4-4 \
tst-tls20mod-bad tst-tls21mod tst-dlmopen-dlerror-mod \
tst-auxvalmod \
- tst-dlmopen-gethostbyname-mod \
+ tst-dlmopen-gethostbyname-mod tst-ro-dynamic-mod \
# Most modules build with _ISOMAC defined, but those filtered out
# depend on internal headers.
@@ -1911,3 +1911,10 @@ $(objpfx)tst-getauxval-static.out: $(objpfx)tst-auxvalmod.so
tst-getauxval-static-ENV = LD_LIBRARY_PATH=$(objpfx):$(common-objpfx)
$(objpfx)tst-dlmopen-gethostbyname.out: $(objpfx)tst-dlmopen-gethostbyname-mod.so
+
+$(objpfx)tst-ro-dynamic: $(objpfx)tst-ro-dynamic-mod.so
+$(objpfx)tst-ro-dynamic-mod.so: $(objpfx)tst-ro-dynamic-mod.os \
+ tst-ro-dynamic-mod.map
+ $(LINK.o) -nostdlib -nostartfiles -shared -o $@ \
+ -Wl,--script=tst-ro-dynamic-mod.map \
+ $(objpfx)tst-ro-dynamic-mod.os
diff --git a/elf/dl-load.c b/elf/dl-load.c
index 39e0d07..6ea7107 100644
--- a/elf/dl-load.c
+++ b/elf/dl-load.c
@@ -1149,6 +1149,7 @@ _dl_map_object_from_fd (const char *name, const char *origname, int fd,
such a segment to avoid a crash later. */
l->l_ld = (void *) ph->p_vaddr;
l->l_ldnum = ph->p_memsz / sizeof (ElfW(Dyn));
+ l->l_ld_readonly = (ph->p_flags & PF_W) == 0;
}
break;
@@ -1292,7 +1293,7 @@ _dl_map_object_from_fd (const char *name, const char *origname, int fd,
else
l->l_ld = (ElfW(Dyn) *) ((ElfW(Addr)) l->l_ld + l->l_addr);
- elf_get_dynamic_info (l, NULL);
+ elf_get_dynamic_info (l);
/* Make sure we are not dlopen'ing an object that has the
DF_1_NOOPEN flag set, or a PIE object. */
diff --git a/elf/dl-reloc-static-pie.c b/elf/dl-reloc-static-pie.c
index 289651b..68ded17 100644
--- a/elf/dl-reloc-static-pie.c
+++ b/elf/dl-reloc-static-pie.c
@@ -40,7 +40,17 @@ _dl_relocate_static_pie (void)
/* Read our own dynamic section and fill in the info array. */
main_map->l_ld = ((void *) main_map->l_addr + elf_machine_dynamic ());
- elf_get_dynamic_info (main_map, NULL);
+
+ const ElfW(Phdr) *ph, *phdr = GL(dl_phdr);
+ size_t phnum = GL(dl_phnum);
+ for (ph = phdr; ph < &phdr[phnum]; ++ph)
+ if (ph->p_type == PT_DYNAMIC)
+ {
+ main_map->l_ld_readonly = (ph->p_flags & PF_W) == 0;
+ break;
+ }
+
+ elf_get_dynamic_info (main_map);
# ifdef ELF_MACHINE_BEFORE_RTLD_RELOC
ELF_MACHINE_BEFORE_RTLD_RELOC (main_map->l_info);
diff --git a/elf/get-dynamic-info.h b/elf/get-dynamic-info.h
index d8ec323..4aa2058 100644
--- a/elf/get-dynamic-info.h
+++ b/elf/get-dynamic-info.h
@@ -28,7 +28,7 @@ static
auto
#endif
inline void __attribute__ ((unused, always_inline))
-elf_get_dynamic_info (struct link_map *l, ElfW(Dyn) *temp)
+elf_get_dynamic_info (struct link_map *l)
{
#if __ELF_NATIVE_CLASS == 32
typedef Elf32_Word d_tag_utype;
@@ -69,28 +69,15 @@ elf_get_dynamic_info (struct link_map *l, ElfW(Dyn) *temp)
info[i] = dyn;
}
-#define DL_RO_DYN_TEMP_CNT 8
-
-#ifndef DL_RO_DYN_SECTION
/* Don't adjust .dynamic unnecessarily. */
- if (l->l_addr != 0)
+ if (l->l_addr != 0 && dl_relocate_ld (l))
{
ElfW(Addr) l_addr = l->l_addr;
- int cnt = 0;
# define ADJUST_DYN_INFO(tag) \
do \
if (info[tag] != NULL) \
- { \
- if (temp) \
- { \
- temp[cnt].d_tag = info[tag]->d_tag; \
- temp[cnt].d_un.d_ptr = info[tag]->d_un.d_ptr + l_addr; \
- info[tag] = temp + cnt++; \
- } \
- else \
- info[tag]->d_un.d_ptr += l_addr; \
- } \
+ info[tag]->d_un.d_ptr += l_addr; \
while (0)
ADJUST_DYN_INFO (DT_HASH);
@@ -107,9 +94,7 @@ elf_get_dynamic_info (struct link_map *l, ElfW(Dyn) *temp)
ADJUST_DYN_INFO (VERSYMIDX (DT_VERSYM));
ADJUST_DYN_INFO (ADDRIDX (DT_GNU_HASH));
# undef ADJUST_DYN_INFO
- assert (cnt <= DL_RO_DYN_TEMP_CNT);
}
-#endif
if (info[DT_PLTREL] != NULL)
{
#if ELF_MACHINE_NO_RELA
diff --git a/elf/rtld.c b/elf/rtld.c
index 742c413..8d2bba3 100644
--- a/elf/rtld.c
+++ b/elf/rtld.c
@@ -463,6 +463,7 @@ _dl_start_final (void *arg, struct dl_start_final_info *info)
#ifndef DONT_USE_BOOTSTRAP_MAP
GL(dl_rtld_map).l_addr = info->l.l_addr;
GL(dl_rtld_map).l_ld = info->l.l_ld;
+ GL(dl_rtld_map).l_ld_readonly = info->l.l_ld_readonly;
memcpy (GL(dl_rtld_map).l_info, info->l.l_info,
sizeof GL(dl_rtld_map).l_info);
GL(dl_rtld_map).l_mach = info->l.l_mach;
@@ -546,7 +547,7 @@ _dl_start (void *arg)
/* Read our own dynamic section and fill in the info array. */
bootstrap_map.l_ld = (void *) bootstrap_map.l_addr + elf_machine_dynamic ();
- elf_get_dynamic_info (&bootstrap_map, NULL);
+ elf_get_dynamic_info (&bootstrap_map);
#if NO_TLS_OFFSET != 0
bootstrap_map.l_tls_offset = NO_TLS_OFFSET;
@@ -1468,6 +1469,7 @@ dl_main (const ElfW(Phdr) *phdr,
/* This tells us where to find the dynamic section,
which tells us everything we need to do. */
main_map->l_ld = (void *) main_map->l_addr + ph->p_vaddr;
+ main_map->l_ld_readonly = (ph->p_flags & PF_W) == 0;
break;
case PT_INTERP:
/* This "interpreter segment" was used by the program loader to
@@ -1613,7 +1615,7 @@ dl_main (const ElfW(Phdr) *phdr,
if (! rtld_is_main)
{
/* Extract the contents of the dynamic section for easy access. */
- elf_get_dynamic_info (main_map, NULL);
+ elf_get_dynamic_info (main_map);
/* If the main map is libc.so, update the base namespace to
refer to this map. If libc.so is loaded later, this happens
diff --git a/elf/setup-vdso.h b/elf/setup-vdso.h
index 86c491e..f44748b 100644
--- a/elf/setup-vdso.h
+++ b/elf/setup-vdso.h
@@ -33,8 +33,6 @@ setup_vdso (struct link_map *main_map __attribute__ ((unused)),
0, LM_ID_BASE);
if (__glibc_likely (l != NULL))
{
- static ElfW(Dyn) dyn_temp[DL_RO_DYN_TEMP_CNT] attribute_relro;
-
l->l_phdr = ((const void *) GLRO(dl_sysinfo_dso)
+ GLRO(dl_sysinfo_dso)->e_phoff);
l->l_phnum = GLRO(dl_sysinfo_dso)->e_phnum;
@@ -45,6 +43,7 @@ setup_vdso (struct link_map *main_map __attribute__ ((unused)),
{
l->l_ld = (void *) ph->p_vaddr;
l->l_ldnum = ph->p_memsz / sizeof (ElfW(Dyn));
+ l->l_ld_readonly = (ph->p_flags & PF_W) == 0;
}
else if (ph->p_type == PT_LOAD)
{
@@ -65,7 +64,7 @@ setup_vdso (struct link_map *main_map __attribute__ ((unused)),
l->l_map_end += l->l_addr;
l->l_text_end += l->l_addr;
l->l_ld = (void *) ((ElfW(Addr)) l->l_ld + l->l_addr);
- elf_get_dynamic_info (l, dyn_temp);
+ elf_get_dynamic_info (l);
_dl_setup_hash (l);
l->l_relocated = 1;
diff --git a/elf/tst-ro-dynamic-mod.c b/elf/tst-ro-dynamic-mod.c
new file mode 100644
index 0000000..6d99925
--- /dev/null
+++ b/elf/tst-ro-dynamic-mod.c
@@ -0,0 +1,19 @@
+/* Test case for DSO with readonly dynamic section.
+ Copyright (C) 2021 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <https://www.gnu.org/licenses/>. */
+
+int foo = -1;
diff --git a/elf/tst-ro-dynamic-mod.map b/elf/tst-ro-dynamic-mod.map
new file mode 100644
index 0000000..2fe4a29
--- /dev/null
+++ b/elf/tst-ro-dynamic-mod.map
@@ -0,0 +1,16 @@
+SECTIONS
+{
+ . = SIZEOF_HEADERS;
+ .dynamic : { *(.dynamic) } :text :dynamic
+ .rodata : { *(.data*) *(.bss*) } :text
+ /DISCARD/ : {
+ *(.note.gnu.property)
+ }
+ .note : { *(.note.*) } :text :note
+}
+PHDRS
+{
+ text PT_LOAD FLAGS(5) FILEHDR PHDRS;
+ dynamic PT_DYNAMIC FLAGS(4);
+ note PT_NOTE FLAGS(4);
+}
diff --git a/elf/tst-ro-dynamic.c b/elf/tst-ro-dynamic.c
new file mode 100644
index 0000000..3a18f87
--- /dev/null
+++ b/elf/tst-ro-dynamic.c
@@ -0,0 +1,31 @@
+/* Test case for DSO with readonly dynamic section.
+ Copyright (C) 2021 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <https://www.gnu.org/licenses/>. */
+
+#include <support/check.h>
+#include <support/test-driver.h>
+
+extern int foo;
+
+static int
+do_test (void)
+{
+ TEST_COMPARE (foo, -1);
+ return 0;
+}
+
+#include <support/test-driver.c>
diff --git a/include/link.h b/include/link.h
index 7b8250d..484ee6c 100644
--- a/include/link.h
+++ b/include/link.h
@@ -205,6 +205,7 @@ struct link_map
unsigned int l_free_initfini:1; /* Nonzero if l_initfini can be
freed, ie. not allocated with
the dummy malloc in ld.so. */
+ unsigned int l_ld_readonly:1; /* Nonzero if dynamic section is readonly. */
/* NODELETE status of the map. Only valid for maps of type
lt_loaded. Lazy binding sets l_nodelete_active directly,
@@ -342,6 +343,8 @@ struct link_map
unsigned long long int l_serial;
};
+#include <dl-relocate-ld.h>
+
/* Information used by audit modules. For most link maps, this data
immediate follows the link map in memory. For the dynamic linker,
it is allocated separately. See link_map_audit_state in
diff --git a/sysdeps/generic/dl-relocate-ld.h b/sysdeps/generic/dl-relocate-ld.h
new file mode 100644
index 0000000..5fae206
--- /dev/null
+++ b/sysdeps/generic/dl-relocate-ld.h
@@ -0,0 +1,32 @@
+/* Check if dynamic section should be relocated. Generic version.
+ Copyright (C) 2021 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <https://www.gnu.org/licenses/>. */
+
+#ifndef _DL_RELOCATE_LD_H
+#define _DL_RELOCATE_LD_H
+
+/* Return true if dynamic section in the shared library L should be
+ relocated. */
+
+static inline bool
+dl_relocate_ld (const struct link_map *l)
+{
+ /* Don't relocate dynamic section if it is readonly */
+ return !l->l_ld_readonly;
+}
+
+#endif /* _DL_RELOCATE_LD_H */
diff --git a/sysdeps/generic/ldsodefs.h b/sysdeps/generic/ldsodefs.h
index 6e50fcd..d49529d 100644
--- a/sysdeps/generic/ldsodefs.h
+++ b/sysdeps/generic/ldsodefs.h
@@ -75,11 +75,8 @@ __BEGIN_DECLS
have to be accessed via the D_PTR macro. The macro is needed since for
most architectures the entry is already relocated - but for some not
and we need to relocate at access time. */
-#ifdef DL_RO_DYN_SECTION
-# define D_PTR(map, i) ((map)->i->d_un.d_ptr + (map)->l_addr)
-#else
-# define D_PTR(map, i) (map)->i->d_un.d_ptr
-#endif
+#define D_PTR(map, i) \
+ ((map)->i->d_un.d_ptr + (dl_relocate_ld (map) ? 0 : (map)->l_addr))
/* Result of the lookup functions and how to retrieve the base address. */
typedef struct link_map *lookup_t;
diff --git a/sysdeps/mips/dl-relocate-ld.h b/sysdeps/mips/dl-relocate-ld.h
new file mode 100644
index 0000000..0c18d9a
--- /dev/null
+++ b/sysdeps/mips/dl-relocate-ld.h
@@ -0,0 +1,32 @@
+/* Check if dynamic section should be relocated. MIPS version.
+ Copyright (C) 2021 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <https://www.gnu.org/licenses/>. */
+
+#ifndef _DL_RELOCATE_LD_H
+#define _DL_RELOCATE_LD_H
+
+/* Return true if dynamic section in the shared library L should be
+ relocated. */
+
+static inline bool
+dl_relocate_ld (const struct link_map *l)
+{
+ /* Never relocate dynamic section. */
+ return false;
+}
+
+#endif /* _DL_RELOCATE_LD_H */
diff --git a/sysdeps/mips/ldsodefs.h b/sysdeps/mips/ldsodefs.h
index 4db7c60..36fd09a 100644
--- a/sysdeps/mips/ldsodefs.h
+++ b/sysdeps/mips/ldsodefs.h
@@ -75,10 +75,6 @@ struct La_mips_64_retval;
struct La_mips_64_retval *, \
const char *);
-/* The MIPS ABI specifies that the dynamic section has to be read-only. */
-
-#define DL_RO_DYN_SECTION 1
-
#include_next <ldsodefs.h>
/* The 64-bit MIPS ELF ABI uses an unusual reloc format. Each
diff --git a/sysdeps/riscv/dl-relocate-ld.h b/sysdeps/riscv/dl-relocate-ld.h
new file mode 100644
index 0000000..1032745
--- /dev/null
+++ b/sysdeps/riscv/dl-relocate-ld.h
@@ -0,0 +1,32 @@
+/* Check if dynamic section should be relocated. RISC-V version.
+ Copyright (C) 2021 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <https://www.gnu.org/licenses/>. */
+
+#ifndef _DL_RELOCATE_LD_H
+#define _DL_RELOCATE_LD_H
+
+/* Return true if dynamic section in the shared library L should be
+ relocated. */
+
+static inline bool
+dl_relocate_ld (const struct link_map *l)
+{
+ /* Never relocate dynamic section for ABI compatibility. */
+ return false;
+}
+
+#endif /* _DL_RELOCATE_LD_H */
diff --git a/sysdeps/riscv/ldsodefs.h b/sysdeps/riscv/ldsodefs.h
index 0c69671..8947ffe 100644
--- a/sysdeps/riscv/ldsodefs.h
+++ b/sysdeps/riscv/ldsodefs.h
@@ -38,11 +38,6 @@ struct La_riscv_retval;
struct La_riscv_retval *, \
const char *);
-/* Although the RISC-V ABI does not specify that the dynamic section has
- to be read-only, it needs to be kept for ABI compatibility. */
-
-#define DL_RO_DYN_SECTION 1
-
#include_next <ldsodefs.h>
#endif
--
1.8.3.1

30
ldconfig-avoid-leak-on-empty-paths-in-config-file.patch
View File

@ -1,30 +0,0 @@
From b0234d79e7d82475d1666f25326ec045c045b3ed Mon Sep 17 00:00:00 2001
From: Siddhesh Poyarekar <siddhesh@sourceware.org>
Date: Tue, 3 Aug 2021 21:10:10 +0530
Subject: [PATCH] ldconfig: avoid leak on empty paths in config file
Reviewed-by: Arjun Shankar <arjun@redhat.com>
---
elf/ldconfig.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/elf/ldconfig.c b/elf/ldconfig.c
index 1037e8d..b889363 100644
--- a/elf/ldconfig.c
+++ b/elf/ldconfig.c
@@ -503,7 +503,11 @@ add_dir_1 (const char *line, const char *from_file, int from_line)
entry->path[--i] = '\0';
if (i == 0)
- return;
+ {
+ free (entry->path);
+ free (entry);
+ return;
+ }
char *path = entry->path;
if (opt_chroot != NULL)
--
1.8.3.1

206
linux-Revert-the-use-of-sched_getaffinity-on-get_npr.patch
View File

@ -1,206 +0,0 @@
From 342298278eabc75baabcaced110a11a02c3d3580 Mon Sep 17 00:00:00 2001
From: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Date: Mon, 6 Sep 2021 14:19:51 -0300
Subject: [PATCH] linux: Revert the use of sched_getaffinity on get_nproc (BZ
#28310)
The use of sched_getaffinity on get_nproc and
sysconf (_SC_NPROCESSORS_ONLN) done in 903bc7dcc2acafc40 (BZ #27645)
breaks the top command in common hypervisor configurations and also
other monitoring tools.
The main issue using sched_getaffinity changed the symbols semantic
from system-wide scope of online CPUs to per-process one (which can
be changed with kernel cpusets or book parameters in VM).
This patch reverts mostly of the 903bc7dcc2acafc40, with the
exceptions:
* No more cached values and atomic updates, since they are inherent
racy.
* No /proc/cpuinfo fallback, since /proc/stat is already used and
it would require to revert more arch-specific code.
* The alloca is replace with a static buffer of 1024 bytes.
So the implementation first consult the sysfs, and fallbacks to procfs.
Checked on x86_64-linux-gnu.
Reviewed-by: Florian Weimer <fweimer@redhat.com>
---
sysdeps/unix/sysv/linux/getsysstats.c | 139 ++++++++++++++++++++++++++++++++--
1 file changed, 134 insertions(+), 5 deletions(-)
diff --git a/sysdeps/unix/sysv/linux/getsysstats.c b/sysdeps/unix/sysv/linux/getsysstats.c
index 1e3d886..15ad91c 100644
--- a/sysdeps/unix/sysv/linux/getsysstats.c
+++ b/sysdeps/unix/sysv/linux/getsysstats.c
@@ -17,6 +17,8 @@
<https://www.gnu.org/licenses/>. */
#include <array_length.h>
+#include <assert.h>
+#include <ctype.h>
#include <dirent.h>
#include <errno.h>
#include <ldsodefs.h>
@@ -29,7 +31,7 @@
#include <sysdep.h>
int
-__get_nprocs (void)
+__get_nprocs_sched (void)
{
enum
{
@@ -52,14 +54,141 @@ __get_nprocs (void)
atomics are needed). */
return 2;
}
-libc_hidden_def (__get_nprocs)
-weak_alias (__get_nprocs, get_nprocs)
+
+static char *
+next_line (int fd, char *const buffer, char **cp, char **re,
+ char *const buffer_end)
+{
+ char *res = *cp;
+ char *nl = memchr (*cp, '\n', *re - *cp);
+ if (nl == NULL)
+ {
+ if (*cp != buffer)
+ {
+ if (*re == buffer_end)
+ {
+ memmove (buffer, *cp, *re - *cp);
+ *re = buffer + (*re - *cp);
+ *cp = buffer;
+
+ ssize_t n = __read_nocancel (fd, *re, buffer_end - *re);
+ if (n < 0)
+ return NULL;
+
+ *re += n;
+
+ nl = memchr (*cp, '\n', *re - *cp);
+ while (nl == NULL && *re == buffer_end)
+ {
+ /* Truncate too long lines. */
+ *re = buffer + 3 * (buffer_end - buffer) / 4;
+ n = __read_nocancel (fd, *re, buffer_end - *re);
+ if (n < 0)
+ return NULL;
+
+ nl = memchr (*re, '\n', n);
+ **re = '\n';
+ *re += n;
+ }
+ }
+ else
+ nl = memchr (*cp, '\n', *re - *cp);
+
+ res = *cp;
+ }
+
+ if (nl == NULL)
+ nl = *re - 1;
+ }
+
+ *cp = nl + 1;
+ assert (*cp <= *re);
+
+ return res == *re ? NULL : res;
+}
+
int
-__get_nprocs_sched (void)
+__get_nprocs (void)
{
- return __get_nprocs ();
+ enum { buffer_size = 1024 };
+ char buffer[buffer_size];
+ char *buffer_end = buffer + buffer_size;
+ char *cp = buffer_end;
+ char *re = buffer_end;
+
+ const int flags = O_RDONLY | O_CLOEXEC;
+ /* This file contains comma-separated ranges. */
+ int fd = __open_nocancel ("/sys/devices/system/cpu/online", flags);
+ char *l;
+ int result = 0;
+ if (fd != -1)
+ {
+ l = next_line (fd, buffer, &cp, &re, buffer_end);
+ if (l != NULL)
+ do
+ {
+ char *endp;
+ unsigned long int n = strtoul (l, &endp, 10);
+ if (l == endp)
+ {
+ result = 0;
+ break;
+ }
+
+ unsigned long int m = n;
+ if (*endp == '-')
+ {
+ l = endp + 1;
+ m = strtoul (l, &endp, 10);
+ if (l == endp)
+ {
+ result = 0;
+ break;
+ }
+ }
+
+ result += m - n + 1;
+
+ l = endp;
+ if (l < re && *l == ',')
+ ++l;
+ }
+ while (l < re && *l != '\n');
+
+ __close_nocancel_nostatus (fd);
+
+ if (result > 0)
+ return result;
+ }
+
+ cp = buffer_end;
+ re = buffer_end;
+
+ /* Default to an SMP system in case we cannot obtain an accurate
+ number. */
+ result = 2;
+
+ fd = __open_nocancel ("/proc/stat", flags);
+ if (fd != -1)
+ {
+ result = 0;
+
+ while ((l = next_line (fd, buffer, &cp, &re, buffer_end)) != NULL)
+ /* The current format of /proc/stat has all the cpu* entries
+ at the front. We assume here that stays this way. */
+ if (strncmp (l, "cpu", 3) != 0)
+ break;
+ else if (isdigit (l[3]))
+ ++result;
+
+ __close_nocancel_nostatus (fd);
+ }
+
+ return result;
}
+libc_hidden_def (__get_nprocs)
+weak_alias (__get_nprocs, get_nprocs)
/* On some architectures it is possible to distinguish between configured
--
1.8.3.1

216
linux-Simplify-get_nprocs.patch
View File

@ -1,216 +0,0 @@
From cda99af14e82b4bb6abaecd717ebe3b57c0aa534 Mon Sep 17 00:00:00 2001
From: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Date: Mon, 6 Sep 2021 12:28:24 -0300
Subject: [PATCH] linux: Simplify get_nprocs
This patch simplifies the memory allocation code and uses the sched
routines instead of reimplement it. This still uses a stack
allocation buffer, so it can be used on malloc initialization code.
Linux currently supports at maximum of 4096 cpus for most architectures:
$ find -iname Kconfig | xargs git grep -A10 -w NR_CPUS | grep -w range
arch/alpha/Kconfig- range 2 32
arch/arc/Kconfig- range 2 4096
arch/arm/Kconfig- range 2 16 if DEBUG_KMAP_LOCAL
arch/arm/Kconfig- range 2 32 if !DEBUG_KMAP_LOCAL
arch/arm64/Kconfig- range 2 4096
arch/csky/Kconfig- range 2 32
arch/hexagon/Kconfig- range 2 6 if SMP
arch/ia64/Kconfig- range 2 4096
arch/mips/Kconfig- range 2 256
arch/openrisc/Kconfig- range 2 32
arch/parisc/Kconfig- range 2 32
arch/riscv/Kconfig- range 2 32
arch/s390/Kconfig- range 2 512
arch/sh/Kconfig- range 2 32
arch/sparc/Kconfig- range 2 32 if SPARC32
arch/sparc/Kconfig- range 2 4096 if SPARC64
arch/um/Kconfig- range 1 1
arch/x86/Kconfig-# [NR_CPUS_RANGE_BEGIN ... NR_CPUS_RANGE_END] range.
arch/x86/Kconfig- range NR_CPUS_RANGE_BEGIN NR_CPUS_RANGE_END
arch/xtensa/Kconfig- range 2 32
With x86 supporting 8192:
arch/x86/Kconfig
976 config NR_CPUS_RANGE_END
977 int
978 depends on X86_64
979 default 8192 if SMP && CPUMASK_OFFSTACK
980 default 512 if SMP && !CPUMASK_OFFSTACK
981 default 1 if !SMP
So using a maximum of 32k cpu should cover all cases (and I would
expect once we start to have many more CPUs that Linux would provide
a more straightforward way to query for such information).
A test is added to check if sched_getaffinity can successfully return
with large buffers.
Checked on x86_64-linux-gnu and i686-linux-gnu.
Reviewed-by: Florian Weimer <fweimer@redhat.com>
(cherry picked from commit 33099d72e41cf8a129b362e9709eb2be9372d844)
---
posix/Makefile | 3 +-
posix/tst-sched_getaffinity.c | 48 +++++++++++++++++++++++++
sysdeps/unix/sysv/linux/getsysstats.c | 68 ++++++++++-------------------------
3 files changed, 68 insertions(+), 51 deletions(-)
create mode 100644 posix/tst-sched_getaffinity.c
diff --git a/posix/Makefile b/posix/Makefile
index 059efb3..09460a2 100644
--- a/posix/Makefile
+++ b/posix/Makefile
@@ -107,7 +107,8 @@ tests := test-errno tstgetopt testfnm runtests runptests \
tst-sysconf-empty-chroot tst-glob_symlinks tst-fexecve \
tst-glob-tilde test-ssize-max tst-spawn4 bug-regex37 \
bug-regex38 tst-regcomp-truncated tst-spawn-chdir \
- tst-wordexp-nocmd tst-execveat tst-spawn5
+ tst-wordexp-nocmd tst-execveat tst-spawn5 \
+ tst-sched_getaffinity
# Test for the glob symbol version that was replaced in glibc 2.27.
ifeq ($(have-GLIBC_2.26)$(build-shared),yesyes)
diff --git a/posix/tst-sched_getaffinity.c b/posix/tst-sched_getaffinity.c
new file mode 100644
index 0000000..db9d517
--- /dev/null
+++ b/posix/tst-sched_getaffinity.c
@@ -0,0 +1,48 @@
+/* Tests for sched_getaffinity with large buffers.
+ Copyright (C) 2021 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <https://www.gnu.org/licenses/>. */
+
+#include <array_length.h>
+#include <sched.h>
+#include <support/check.h>
+
+/* NB: this test may fail on system with more than 32k cpus. */
+
+static int
+do_test (void)
+{
+ /* The values are larger than the default cpu_set_t. */
+ const int bufsize[] = { 1<<11, 1<<12, 1<<13, 1<<14, 1<<15, 1<<16, 1<<17 };
+ int cpucount[array_length (bufsize)];
+
+ for (int i = 0; i < array_length (bufsize); i++)
+ {
+ cpu_set_t *cpuset = CPU_ALLOC (bufsize[i]);
+ TEST_VERIFY (cpuset != NULL);
+ size_t size = CPU_ALLOC_SIZE (bufsize[i]);
+ TEST_COMPARE (sched_getaffinity (0, size, cpuset), 0);
+ cpucount[i] = CPU_COUNT_S (size, cpuset);
+ CPU_FREE (cpuset);
+ }
+
+ for (int i = 0; i < array_length (cpucount) - 1; i++)
+ TEST_COMPARE (cpucount[i], cpucount[i + 1]);
+
+ return 0;
+}
+
+#include <support/test-driver.c>
diff --git a/sysdeps/unix/sysv/linux/getsysstats.c b/sysdeps/unix/sysv/linux/getsysstats.c
index 120ce1b..61d20e7 100644
--- a/sysdeps/unix/sysv/linux/getsysstats.c
+++ b/sysdeps/unix/sysv/linux/getsysstats.c
@@ -29,61 +29,29 @@
#include <sys/sysinfo.h>
#include <sysdep.h>
-/* Compute the population count of the entire array. */
-static int
-__get_nprocs_count (const unsigned long int *array, size_t length)
-{
- int count = 0;
- for (size_t i = 0; i < length; ++i)
- if (__builtin_add_overflow (count, __builtin_popcountl (array[i]),
- &count))
- return INT_MAX;
- return count;
-}
-
-/* __get_nprocs with a large buffer. */
-static int
-__get_nprocs_large (void)
-{
- /* This code cannot use scratch_buffer because it is used during
- malloc initialization. */
- size_t pagesize = GLRO (dl_pagesize);
- unsigned long int *page = __mmap (0, pagesize, PROT_READ | PROT_WRITE,
- MAP_ANONYMOUS | MAP_PRIVATE, -1, 0);
- if (page == MAP_FAILED)
- return 2;
- int r = INTERNAL_SYSCALL_CALL (sched_getaffinity, 0, pagesize, page);
- int count;
- if (r > 0)
- count = __get_nprocs_count (page, pagesize / sizeof (unsigned long int));
- else if (r == -EINVAL)
- /* One page is still not enough to store the bits. A more-or-less
- arbitrary value. This assumes t hat such large systems never
- happen in practice. */
- count = GLRO (dl_pagesize) * CHAR_BIT;
- else
- count = 2;
- __munmap (page, GLRO (dl_pagesize));
- return count;
-}
-
int
__get_nprocs (void)
{
- /* Fast path for most systems. The kernel expects a buffer size
- that is a multiple of 8. */
- unsigned long int small_buffer[1024 / CHAR_BIT / sizeof (unsigned long int)];
- int r = INTERNAL_SYSCALL_CALL (sched_getaffinity, 0,
- sizeof (small_buffer), small_buffer);
+ enum
+ {
+ max_num_cpus = 32768,
+ cpu_bits_size = CPU_ALLOC_SIZE (32768)
+ };
+
+ /* This cannot use malloc because it is used on malloc initialization. */
+ __cpu_mask cpu_bits[cpu_bits_size / sizeof (__cpu_mask)];
+ int r = INTERNAL_SYSCALL_CALL (sched_getaffinity, 0, cpu_bits_size,
+ cpu_bits);
if (r > 0)
- return __get_nprocs_count (small_buffer, r / sizeof (unsigned long int));
+ return CPU_COUNT_S (cpu_bits_size, (cpu_set_t*) cpu_bits);
else if (r == -EINVAL)
- /* The kernel requests a larger buffer to store the data. */
- return __get_nprocs_large ();
- else
- /* Some other error. 2 is conservative (not a uniprocessor
- system, so atomics are needed). */
- return 2;
+ /* The input buffer is still not enough to store the number of cpus. This
+ is an arbitrary values assuming such systems should be rare and there
+ is no offline cpus. */
+ return max_num_cpus;
+ /* Some other error. 2 is conservative (not a uniprocessor system, so
+ atomics are needed). */
+ return 2;
}
libc_hidden_def (__get_nprocs)
weak_alias (__get_nprocs, get_nprocs)
--
1.8.3.1

110
misc-Add-__get_nprocs_sched.patch
View File

@ -1,110 +0,0 @@
From e870aac8974cda746157a5a3c9f452ccd70da29b Mon Sep 17 00:00:00 2001
From: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Date: Mon, 6 Sep 2021 12:22:54 -0300
Subject: [PATCH] misc: Add __get_nprocs_sched
This is an internal function meant to return the number of avaliable
processor where the process can scheduled, different than the
__get_nprocs which returns a the system available online CPU.
The Linux implementation currently only calls __get_nprocs(), which
in tuns calls sched_getaffinity.
Reviewed-by: Florian Weimer <fweimer@redhat.com>
(cherry picked from commit 11a02b035b464ab6813676adfd19c4a59c36d907)
---
include/sys/sysinfo.h | 7 ++++++-
malloc/arena.c | 2 +-
misc/getsysstats.c | 6 ++++++
sysdeps/mach/getsysstats.c | 6 ++++++
sysdeps/unix/sysv/linux/getsysstats.c | 6 ++++++
5 files changed, 25 insertions(+), 2 deletions(-)
diff --git a/include/sys/sysinfo.h b/include/sys/sysinfo.h
index 7388356..c490561 100644
--- a/include/sys/sysinfo.h
+++ b/include/sys/sysinfo.h
@@ -9,10 +9,15 @@
extern int __get_nprocs_conf (void);
libc_hidden_proto (__get_nprocs_conf)
-/* Return number of available processors. */
+/* Return number of available processors (not all of them will be
+ available to the caller process). */
extern int __get_nprocs (void);
libc_hidden_proto (__get_nprocs)
+/* Return the number of available processors which the process can
+ be scheduled. */
+extern int __get_nprocs_sched (void) attribute_hidden;
+
/* Return number of physical pages of memory in the system. */
extern long int __get_phys_pages (void);
libc_hidden_proto (__get_phys_pages)
diff --git a/malloc/arena.c b/malloc/arena.c
index 6674846..f1f0af8 100644
--- a/malloc/arena.c
+++ b/malloc/arena.c
@@ -879,7 +879,7 @@ arena_get2 (size_t size, mstate avoid_arena)
narenas_limit = mp_.arena_max;
else if (narenas > mp_.arena_test)
{
- int n = __get_nprocs ();
+ int n = __get_nprocs_sched ();
if (n >= 1)
narenas_limit = NARENAS_FROM_NCORES (n);
diff --git a/misc/getsysstats.c b/misc/getsysstats.c
index 0eedfac..57d9360 100644
--- a/misc/getsysstats.c
+++ b/misc/getsysstats.c
@@ -45,6 +45,12 @@ weak_alias (__get_nprocs, get_nprocs)
link_warning (get_nprocs, "warning: get_nprocs will always return 1")
+int
+__get_nprocs_sched (void)
+{
+ return 1;
+}
+
long int
__get_phys_pages (void)
{
diff --git a/sysdeps/mach/getsysstats.c b/sysdeps/mach/getsysstats.c
index 1267f39..cc8023f 100644
--- a/sysdeps/mach/getsysstats.c
+++ b/sysdeps/mach/getsysstats.c
@@ -62,6 +62,12 @@ __get_nprocs (void)
libc_hidden_def (__get_nprocs)
weak_alias (__get_nprocs, get_nprocs)
+int
+__get_nprocs_sched (void)
+{
+ return __get_nprocs ();
+}
+
/* Return the number of physical pages on the system. */
long int
__get_phys_pages (void)
diff --git a/sysdeps/unix/sysv/linux/getsysstats.c b/sysdeps/unix/sysv/linux/getsysstats.c
index 1391e36..120ce1b 100644
--- a/sysdeps/unix/sysv/linux/getsysstats.c
+++ b/sysdeps/unix/sysv/linux/getsysstats.c
@@ -88,6 +88,12 @@ __get_nprocs (void)
libc_hidden_def (__get_nprocs)
weak_alias (__get_nprocs, get_nprocs)
+int
+__get_nprocs_sched (void)
+{
+ return __get_nprocs ();
+}
+
/* On some architectures it is possible to distinguish between configured
and active cpus. */
--
1.8.3.1

77
mtrace-Fix-output-with-PIE-and-ASLR-BZ-22716.patch
View File

@ -1,77 +0,0 @@
From f2e33c3268db9adf8e57e991676ed0d5ac74e8a8 Mon Sep 17 00:00:00 2001
From: Siddhesh Poyarekar <siddhesh@sourceware.org>
Date: Mon, 23 Aug 2021 08:11:54 +0530
Subject: [PATCH] mtrace: Fix output with PIE and ASLR [BZ #22716]
Record only the relative address of the caller in mtrace file. Use
LD_TRACE_PRELINKING to get the executable as well as binary vs
executable load offsets so that we may compute a base to add to the
relative address in the mtrace file. This allows us to get a valid
address to pass to addr2line in all cases.
Fixes BZ #22716.
Co-authored-by: John Ogness <john.ogness@linutronix.de>
Reviewed-by: Andreas Schwab <schwab@linux-m68k.org>
Reviewed-by: DJ Delorie <dj@redhat.com>
---
malloc/mtrace-impl.c | 6 +++---
malloc/mtrace.pl | 15 +++++++--------
2 files changed, 10 insertions(+), 11 deletions(-)
diff --git a/malloc/mtrace-impl.c b/malloc/mtrace-impl.c
index 83008ca..f5f19c2 100644
--- a/malloc/mtrace-impl.c
+++ b/malloc/mtrace-impl.c
@@ -65,9 +65,9 @@ tr_where (const void *caller, Dl_info *info)
offset);
}
- fprintf (mallstream, "@ %s%s%s[%p] ", info->dli_fname ? : "",
- info->dli_fname ? ":" : "",
- buf, caller);
+ fprintf (mallstream, "@ %s%s%s[0x%" PRIxPTR "] ",
+ info->dli_fname ? : "", info->dli_fname ? ":" : "", buf,
+ caller - info->dli_fbase);
}
else
fprintf (mallstream, "@ [%p] ", caller);
diff --git a/malloc/mtrace.pl b/malloc/mtrace.pl
index 6f49c83..b1073a1 100644
--- a/malloc/mtrace.pl
+++ b/malloc/mtrace.pl
@@ -75,11 +75,15 @@ if ($#ARGV == 0) {
} else {
$prog = "./$binary";
}
- if (open (LOCS, "env LD_TRACE_LOADED_OBJECTS=1 $prog |")) {
+ # Set the environment variable LD_TRACE_PRELINKING to an empty string so
+ # that we trigger tracing but do not match with the executable or any of
+ # its dependencies.
+ if (open (LOCS, "env LD_TRACE_PRELINKING= $prog |")) {
while (<LOCS>) {
chop;
- if (/^.*=> (.*) .(0x[0123456789abcdef]*).$/) {
+ if (/^.*=> (.*) \((0x[0123456789abcdef]*), (0x[0123456789abcdef]*).*/) {
$locs{$1} = $2;
+ $rel{$1} = hex($2) - hex($3);
}
}
close (LOCS);
@@ -110,12 +114,7 @@ sub location {
my $addr = $2;
my $searchaddr;
return $cache{$addr} if (exists $cache{$addr});
- if ($locs{$prog} ne "") {
- $searchaddr = sprintf "%#x", $addr - $locs{$prog};
- } else {
- $searchaddr = $addr;
- $prog = $binary;
- }
+ $searchaddr = sprintf "%#x", hex($addr) + $rel{$prog};
if ($binary ne "" && open (ADDR, "addr2line -e $prog $searchaddr|")) {
my $line = <ADDR>;
chomp $line;
--
1.8.3.1

61
mtrace-Use-a-static-buffer-for-printing-BZ-25947.patch
View File

@ -1,61 +0,0 @@
From dc906e94f7033892dadbd91718349f19e1376391 Mon Sep 17 00:00:00 2001
From: Siddhesh Poyarekar <siddhesh@sourceware.org>
Date: Thu, 12 Aug 2021 06:38:15 +0530
Subject: [PATCH] mtrace: Use a static buffer for printing [BZ #25947]
Use a static buffer for mtrace printing now that it no longer adds to
default libc footprint.
Reviewed-by: DJ Delorie <dj@redhat.com>
---
malloc/mtrace-impl.c | 14 +++-----------
1 file changed, 3 insertions(+), 11 deletions(-)
diff --git a/malloc/mtrace-impl.c b/malloc/mtrace-impl.c
index 0e10ab7..83008ca 100644
--- a/malloc/mtrace-impl.c
+++ b/malloc/mtrace-impl.c
@@ -34,11 +34,8 @@
#include <kernel-features.h>
-#define TRACE_BUFFER_SIZE 512
-
static FILE *mallstream;
static const char mallenv[] = "MALLOC_TRACE";
-static char *malloc_trace_buffer;
static void
tr_where (const void *caller, Dl_info *info)
@@ -184,16 +181,13 @@ do_mtrace (void)
mallfile = secure_getenv (mallenv);
if (mallfile != NULL)
{
- char *mtb = malloc (TRACE_BUFFER_SIZE);
- if (mtb == NULL)
- return;
-
mallstream = fopen (mallfile != NULL ? mallfile : "/dev/null", "wce");
if (mallstream != NULL)
{
/* Be sure it doesn't malloc its buffer! */
- malloc_trace_buffer = mtb;
- setvbuf (mallstream, malloc_trace_buffer, _IOFBF, TRACE_BUFFER_SIZE);
+ static char tracebuf [512];
+
+ setvbuf (mallstream, tracebuf, _IOFBF, sizeof (tracebuf));
fprintf (mallstream, "= Start\n");
if (!added_atexit_handler)
{
@@ -203,8 +197,6 @@ do_mtrace (void)
}
__malloc_debug_enable (MALLOC_MTRACE_HOOK);
}
- else
- free (mtb);
}
}
--
1.8.3.1

46
nis-Fix-leak-on-realloc-failure-in-nis_getnames-BZ-2.patch
View File

@ -1,46 +0,0 @@
From 60698263122b7c54ded3f70a466176e17a529480 Mon Sep 17 00:00:00 2001
From: Robbie Harwood <rharwood@redhat.com>
Date: Wed, 28 Jul 2021 14:23:32 -0400
Subject: [PATCH] nis: Fix leak on realloc failure in nis_getnames [BZ #28150]
If pos >= count but realloc fails, tmp will not have been placed in
getnames[pos] yet, and so will not be freed in free_null. Detected
by Coverity.
Also remove misleading comment from nis_getnames(), since it actually
did properly release getnames when out of memory.
Tested-by: Carlos O'Donell <carlos@redhat.com>
---
nis/nis_subr.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/nis/nis_subr.c b/nis/nis_subr.c
index dd0e300..6784fc3 100644
--- a/nis/nis_subr.c
+++ b/nis/nis_subr.c
@@ -103,9 +103,6 @@ count_dots (const_nis_name str)
return count;
}
-/* If we run out of memory, we don't give already allocated memory
- free. The overhead for bringing getnames back in a safe state to
- free it is to big. */
nis_name *
nis_getnames (const_nis_name name)
{
@@ -271,7 +268,10 @@ nis_getnames (const_nis_name name)
nis_name *newp = realloc (getnames,
(count + 1) * sizeof (char *));
if (__glibc_unlikely (newp == NULL))
- goto free_null;
+ {
+ free (tmp);
+ goto free_null;
+ }
getnames = newp;
}
getnames[pos] = tmp;
--
1.8.3.1

67
nptl-Add-one-more-barrier-to-nptl-tst-create1.patch
View File

@ -1,67 +0,0 @@
From 5cc338565479a620244c2f8ff35956629c4dbf81 Mon Sep 17 00:00:00 2001
From: Florian Weimer <fweimer@redhat.com>
Date: Fri, 10 Dec 2021 05:14:24 +0100
Subject: [PATCH] nptl: Add one more barrier to nptl/tst-create1
Without the bar_ctor_finish barrier, it was possible that thread2
re-locked user_lock before ctor had a chance to lock it. ctor then
blocked in its locking operation, xdlopen from the main thread
did not return, and thread2 was stuck waiting in bar_dtor:
thread 1: started.
thread 2: started.
thread 2: locked user_lock.
constructor started: 0.
thread 1: in ctor: started.
thread 3: started.
thread 3: done.
thread 2: unlocked user_lock.
thread 2: locked user_lock.
Fixes the test in commit 83b5323261bb72313bffcf37476c1b8f0847c736
("elf: Avoid deadlock between pthread_create and ctors [BZ #28357]").
Reviewed-by: Szabolcs Nagy <szabolcs.nagy@arm.com>
---
sysdeps/pthread/tst-create1.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/sysdeps/pthread/tst-create1.c b/sysdeps/pthread/tst-create1.c
index 932586c..763ded8 100644
--- a/sysdeps/pthread/tst-create1.c
+++ b/sysdeps/pthread/tst-create1.c
@@ -33,6 +33,7 @@ thread 2: lock(user_lock) -> pthread_create
*/
static pthread_barrier_t bar_ctor;
+static pthread_barrier_t bar_ctor_finish;
static pthread_barrier_t bar_dtor;
static pthread_mutex_t user_lock = PTHREAD_MUTEX_INITIALIZER;
@@ -46,6 +47,7 @@ ctor (void)
xpthread_mutex_unlock (&user_lock);
dprintf (1, "thread 1: in ctor: unlocked user_lock.\n");
dprintf (1, "thread 1: in ctor: done.\n");
+ xpthread_barrier_wait (&bar_ctor_finish);
}
void
@@ -81,6 +83,7 @@ thread2 (void *a)
xpthread_mutex_unlock (&user_lock);
dprintf (1, "thread 2: unlocked user_lock.\n");
xpthread_join (t3);
+ xpthread_barrier_wait (&bar_ctor_finish);
xpthread_mutex_lock (&user_lock);
dprintf (1, "thread 2: locked user_lock.\n");
@@ -99,6 +102,7 @@ thread1 (void)
{
dprintf (1, "thread 1: started.\n");
xpthread_barrier_init (&bar_ctor, NULL, 2);
+ xpthread_barrier_init (&bar_ctor_finish, NULL, 2);
xpthread_barrier_init (&bar_dtor, NULL, 2);
pthread_t t2 = xpthread_create (0, thread2, 0);
void *p = xdlopen ("tst-create1mod.so", RTLD_NOW | RTLD_GLOBAL);
--
1.8.3.1

137
nptl-Avoid-setxid-deadlock-with-blocked-signals-in-t.patch
View File

@ -1,137 +0,0 @@
From 2849e2f53311b66853cb5159b64cba2bddbfb854 Mon Sep 17 00:00:00 2001
From: Florian Weimer <fweimer@redhat.com>
Date: Thu, 23 Sep 2021 09:55:54 +0200
Subject: [PATCH] nptl: Avoid setxid deadlock with blocked signals in thread
exit [BZ #28361]
As part of the fix for bug 12889, signals are blocked during
thread exit, so that application code cannot run on the thread that
is about to exit. This would cause problems if the application
expected signals to be delivered after the signal handler revealed
the thread to still exist, despite pthread_kill can no longer be used
to send signals to it. However, glibc internally uses the SIGSETXID
signal in a way that is incompatible with signal blocking, due to the
way the setxid handshake delays thread exit until the setxid operation
has completed. With a blocked SIGSETXID, the handshake can never
complete, causing a deadlock.
As a band-aid, restore the previous handshake protocol by not blocking
SIGSETXID during thread exit.
The new test sysdeps/pthread/tst-pthread-setuid-loop.c is based on
a downstream test by Martin Osvald.
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
Tested-by: Carlos O'Donell <carlos@redhat.com>
---
nptl/pthread_create.c | 12 +++++-
sysdeps/pthread/Makefile | 1 +
sysdeps/pthread/tst-pthread-setuid-loop.c | 61 +++++++++++++++++++++++++++++++
3 files changed, 72 insertions(+), 2 deletions(-)
create mode 100644 sysdeps/pthread/tst-pthread-setuid-loop.c
diff --git a/nptl/pthread_create.c b/nptl/pthread_create.c
index a559f86..d6ea43a 100644
--- a/nptl/pthread_create.c
+++ b/nptl/pthread_create.c
@@ -487,8 +487,16 @@ start_thread (void *arg)
/* This prevents sending a signal from this thread to itself during
its final stages. This must come after the exit call above
- because atexit handlers must not run with signals blocked. */
- __libc_signal_block_all (NULL);
+ because atexit handlers must not run with signals blocked.
+
+ Do not block SIGSETXID. The setxid handshake below expects the
+ signal to be delivered. (SIGSETXID cannot run application code,
+ nor does it use pthread_kill.) Reuse the pd->sigmask space for
+ computing the signal mask, to save stack space. */
+ __sigfillset (&pd->sigmask);
+ __sigdelset (&pd->sigmask, SIGSETXID);
+ INTERNAL_SYSCALL_CALL (rt_sigprocmask, SIG_BLOCK, &pd->sigmask, NULL,
+ __NSIG_BYTES);
/* Tell __pthread_kill_internal that this thread is about to exit.
If there is a __pthread_kill_internal in progress, this delays
diff --git a/sysdeps/pthread/Makefile b/sysdeps/pthread/Makefile
index 48dba71..d4bd2d4 100644
--- a/sysdeps/pthread/Makefile
+++ b/sysdeps/pthread/Makefile
@@ -118,6 +118,7 @@ tests += tst-cnd-basic tst-mtx-trylock tst-cnd-broadcast \
tst-unload \
tst-unwind-thread \
tst-pt-vfork1 tst-pt-vfork2 tst-vfork1x tst-vfork2x \
+ tst-pthread-setuid-loop \
tst-pthread_cancel-exited \
tst-pthread_cancel-select-loop \
tst-pthread_kill-exited \
diff --git a/sysdeps/pthread/tst-pthread-setuid-loop.c b/sysdeps/pthread/tst-pthread-setuid-loop.c
new file mode 100644
index 0000000..fda2a49
--- /dev/null
+++ b/sysdeps/pthread/tst-pthread-setuid-loop.c
@@ -0,0 +1,61 @@
+/* Test that setuid, pthread_create, thread exit do not deadlock (bug 28361).
+ Copyright (C) 2021 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <https://www.gnu.org/licenses/>. */
+
+#include <support/check.h>
+#include <support/xthread.h>
+#include <unistd.h>
+
+/* How many threads to launch during each iteration. */
+enum { threads = 4 };
+
+/* How many iterations to perform. This value seems to reproduce
+ bug 28361 in a bout one in three runs. */
+enum { iterations = 5000 };
+
+/* Cache of the real user ID used by setuid_thread. */
+static uid_t uid;
+
+/* Start routine for the threads. */
+static void *
+setuid_thread (void *closure)
+{
+ TEST_COMPARE (setuid (uid), 0);
+ return NULL;
+}
+
+static int
+do_test (void)
+{
+ /* The setxid machinery is still invoked even if the UID is
+ unchanged. (The kernel might reset other credentials as part of
+ the system call.) */
+ uid = getuid ();
+
+ for (int i = 0; i < iterations; ++i)
+ {
+ pthread_t thread_ids[threads];
+ for (int j = 0; j < threads; ++j)
+ thread_ids[j] = xpthread_create (NULL, setuid_thread, NULL);
+ for (int j = 0; j < threads; ++j)
+ xpthread_join (thread_ids[j]);
+ }
+
+ return 0;
+}
+
+#include <support/test-driver.c>
--
1.8.3.1

424
nptl-Fix-race-between-pthread_kill-and-thread-exit-b.patch
View File

@ -1,424 +0,0 @@
From 526c3cf11ee9367344b6b15d669e4c3cb461a2be Mon Sep 17 00:00:00 2001
From: Florian Weimer <fweimer@redhat.com>
Date: Mon, 13 Sep 2021 11:06:08 +0200
Subject: [PATCH] nptl: Fix race between pthread_kill and thread exit (bug
12889)
A new thread exit lock and flag are introduced. They are used to
detect that the thread is about to exit or has exited in
__pthread_kill_internal, and the signal is not sent in this case.
The test sysdeps/pthread/tst-pthread_cancel-select-loop.c is derived
from a downstream test originally written by Marek Polacek.
Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
---
nptl/allocatestack.c | 3 +
nptl/descr.h | 6 ++
nptl/pthread_create.c | 14 +++
nptl/pthread_kill.c | 65 +++++++-----
sysdeps/pthread/Makefile | 2 +
sysdeps/pthread/tst-pthread_cancel-select-loop.c | 87 ++++++++++++++++
sysdeps/pthread/tst-pthread_kill-exiting.c | 123 +++++++++++++++++++++++
7 files changed, 275 insertions(+), 25 deletions(-)
create mode 100644 sysdeps/pthread/tst-pthread_cancel-select-loop.c
create mode 100644 sysdeps/pthread/tst-pthread_kill-exiting.c
diff --git a/nptl/allocatestack.c b/nptl/allocatestack.c
index 0356993..fa81007 100644
--- a/nptl/allocatestack.c
+++ b/nptl/allocatestack.c
@@ -31,6 +31,7 @@
#include <futex-internal.h>
#include <kernel-features.h>
#include <nptl-stack.h>
+#include <libc-lock.h>
/* Default alignment of stack. */
#ifndef STACK_ALIGN
@@ -126,6 +127,8 @@ get_cached_stack (size_t *sizep, void **memp)
/* No pending event. */
result->nextevent = NULL;
+ result->exiting = false;
+ __libc_lock_init (result->exit_lock);
result->tls_state = (struct tls_internal_t) { 0 };
/* Clear the DTV. */
diff --git a/nptl/descr.h b/nptl/descr.h
index e1c8831..41ee56f 100644
--- a/nptl/descr.h
+++ b/nptl/descr.h
@@ -395,6 +395,12 @@ struct pthread
PTHREAD_CANCEL_ASYNCHRONOUS). */
unsigned char canceltype;
+ /* Used in __pthread_kill_internal to detected a thread that has
+ exited or is about to exit. exit_lock must only be acquired
+ after blocking signals. */
+ bool exiting;
+ int exit_lock; /* A low-level lock (for use with __libc_lock_init etc). */
+
/* Used on strsignal. */
struct tls_internal_t tls_state;
diff --git a/nptl/pthread_create.c b/nptl/pthread_create.c
index 7607f36..a559f86 100644
--- a/nptl/pthread_create.c
+++ b/nptl/pthread_create.c
@@ -36,6 +36,7 @@
#include <sys/single_threaded.h>
#include <version.h>
#include <clone_internal.h>
+#include <futex-internal.h>
#include <shlib-compat.h>
@@ -484,6 +485,19 @@ start_thread (void *arg)
/* This was the last thread. */
exit (0);
+ /* This prevents sending a signal from this thread to itself during
+ its final stages. This must come after the exit call above
+ because atexit handlers must not run with signals blocked. */
+ __libc_signal_block_all (NULL);
+
+ /* Tell __pthread_kill_internal that this thread is about to exit.
+ If there is a __pthread_kill_internal in progress, this delays
+ the thread exit until the signal has been queued by the kernel
+ (so that the TID used to send it remains valid). */
+ __libc_lock_lock (pd->exit_lock);
+ pd->exiting = true;
+ __libc_lock_unlock (pd->exit_lock);
+
#ifndef __ASSUME_SET_ROBUST_LIST
/* If this thread has any robust mutexes locked, handle them now. */
# if __PTHREAD_MUTEX_HAVE_PREV
diff --git a/nptl/pthread_kill.c b/nptl/pthread_kill.c
index 5d4c86f..fb7862e 100644
--- a/nptl/pthread_kill.c
+++ b/nptl/pthread_kill.c
@@ -16,6 +16,7 @@
License along with the GNU C Library; if not, see
<https://www.gnu.org/licenses/>. */
+#include <libc-lock.h>
#include <unistd.h>
#include <pthreadP.h>
#include <shlib-compat.h>
@@ -23,37 +24,51 @@
int
__pthread_kill_internal (pthread_t threadid, int signo)
{
- pid_t tid;
struct pthread *pd = (struct pthread *) threadid;
-
if (pd == THREAD_SELF)
- /* It is a special case to handle raise() implementation after a vfork
- call (which does not update the PD tid field). */
- tid = INLINE_SYSCALL_CALL (gettid);
- else
- /* Force load of pd->tid into local variable or register. Otherwise
- if a thread exits between ESRCH test and tgkill, we might return
- EINVAL, because pd->tid would be cleared by the kernel. */
- tid = atomic_forced_read (pd->tid);
-
- int val;
- if (__glibc_likely (tid > 0))
{
- pid_t pid = __getpid ();
-
- val = INTERNAL_SYSCALL_CALL (tgkill, pid, tid, signo);
- val = (INTERNAL_SYSCALL_ERROR_P (val)
- ? INTERNAL_SYSCALL_ERRNO (val) : 0);
+ /* Use the actual TID from the kernel, so that it refers to the
+ current thread even if called after vfork. There is no
+ signal blocking in this case, so that the signal is delivered
+ immediately, before __pthread_kill_internal returns: a signal
+ sent to the thread itself needs to be delivered
+ synchronously. (It is unclear if Linux guarantees the
+ delivery of all pending signals after unblocking in the code
+ below. POSIX only guarantees delivery of a single signal,
+ which may not be the right one.) */
+ pid_t tid = INTERNAL_SYSCALL_CALL (gettid);
+ int ret = INTERNAL_SYSCALL_CALL (kill, tid, signo);
+ return INTERNAL_SYSCALL_ERROR_P (ret) ? INTERNAL_SYSCALL_ERRNO (ret) : 0;
}
+
+ /* Block all signals, as required by pd->exit_lock. */
+ sigset_t old_mask;
+ __libc_signal_block_all (&old_mask);
+ __libc_lock_lock (pd->exit_lock);
+
+ int ret;
+ if (pd->exiting)
+ /* The thread is about to exit (or has exited). Sending the
+ signal is either not observable (the target thread has already
+ blocked signals at this point), or it will fail, or it might be
+ delivered to a new, unrelated thread that has reused the TID.
+ So do not actually send the signal. Do not report an error
+ because the threadid argument is still valid (the thread ID
+ lifetime has not ended), and ESRCH (for example) would be
+ misleading. */
+ ret = 0;
else
- /* The kernel reports that the thread has exited. POSIX specifies
- the ESRCH error only for the case when the lifetime of a thread
- ID has ended, but calling pthread_kill on such a thread ID is
- undefined in glibc. Therefore, do not treat kernel thread exit
- as an error. */
- val = 0;
+ {
+ /* Using tgkill is a safety measure. pd->exit_lock ensures that
+ the target thread cannot exit. */
+ ret = INTERNAL_SYSCALL_CALL (tgkill, __getpid (), pd->tid, signo);
+ ret = INTERNAL_SYSCALL_ERROR_P (ret) ? INTERNAL_SYSCALL_ERRNO (ret) : 0;
+ }
+
+ __libc_lock_unlock (pd->exit_lock);
+ __libc_signal_restore_set (&old_mask);
- return val;
+ return ret;
}
int
diff --git a/sysdeps/pthread/Makefile b/sysdeps/pthread/Makefile
index dedfa0d..48dba71 100644
--- a/sysdeps/pthread/Makefile
+++ b/sysdeps/pthread/Makefile
@@ -119,7 +119,9 @@ tests += tst-cnd-basic tst-mtx-trylock tst-cnd-broadcast \
tst-unwind-thread \
tst-pt-vfork1 tst-pt-vfork2 tst-vfork1x tst-vfork2x \
tst-pthread_cancel-exited \
+ tst-pthread_cancel-select-loop \
tst-pthread_kill-exited \
+ tst-pthread_kill-exiting \
# tests
tests-time64 := \
diff --git a/sysdeps/pthread/tst-pthread_cancel-select-loop.c b/sysdeps/pthread/tst-pthread_cancel-select-loop.c
new file mode 100644
index 0000000..a620875
--- /dev/null
+++ b/sysdeps/pthread/tst-pthread_cancel-select-loop.c
@@ -0,0 +1,87 @@
+/* Test that pthread_cancel succeeds during thread exit.
+ Copyright (C) 2021 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <https://www.gnu.org/licenses/>. */
+
+/* This test tries to trigger an internal race condition in
+ pthread_cancel, where the cancellation signal is sent after the
+ thread has begun the cancellation process. This can result in a
+ spurious ESRCH error. For the original bug 12889, the window is
+ quite small, so the bug was not reproduced in every run. */
+
+#include <stdbool.h>
+#include <stddef.h>
+#include <support/check.h>
+#include <support/xthread.h>
+#include <support/xunistd.h>
+#include <sys/select.h>
+#include <unistd.h>
+
+/* Set to true by timeout_thread_function when the test should
+ terminate. */
+static bool timeout;
+
+static void *
+timeout_thread_function (void *unused)
+{
+ usleep (5 * 1000 * 1000);
+ __atomic_store_n (&timeout, true, __ATOMIC_RELAXED);
+ return NULL;
+}
+
+/* Used for blocking the select function below. */
+static int pipe_fds[2];
+
+static void *
+canceled_thread_function (void *unused)
+{
+ while (true)
+ {
+ fd_set rfs;
+ fd_set wfs;
+ fd_set efs;
+ FD_ZERO (&rfs);
+ FD_ZERO (&wfs);
+ FD_ZERO (&efs);
+ FD_SET (pipe_fds[0], &rfs);
+
+ /* If the cancellation request is recognized early, the thread
+ begins exiting while the cancellation signal arrives. */
+ select (FD_SETSIZE, &rfs, &wfs, &efs, NULL);
+ }
+ return NULL;
+}
+
+static int
+do_test (void)
+{
+ xpipe (pipe_fds);
+ pthread_t thr_timeout = xpthread_create (NULL, timeout_thread_function, NULL);
+
+ while (!__atomic_load_n (&timeout, __ATOMIC_RELAXED))
+ {
+ pthread_t thr = xpthread_create (NULL, canceled_thread_function, NULL);
+ xpthread_cancel (thr);
+ TEST_VERIFY (xpthread_join (thr) == PTHREAD_CANCELED);
+ }
+
+ xpthread_join (thr_timeout);
+ xclose (pipe_fds[0]);
+ xclose (pipe_fds[1]);
+ return 0;
+}
+
+#include <support/test-driver.c>
diff --git a/sysdeps/pthread/tst-pthread_kill-exiting.c b/sysdeps/pthread/tst-pthread_kill-exiting.c
new file mode 100644
index 0000000..f803e94
--- /dev/null
+++ b/sysdeps/pthread/tst-pthread_kill-exiting.c
@@ -0,0 +1,123 @@
+/* Test that pthread_kill succeeds during thread exit.
+ Copyright (C) 2021 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <https://www.gnu.org/licenses/>. */
+
+/* This test verifies that pthread_kill for a thread that is exiting
+ succeeds (with or without actually delivering the signal). */
+
+#include <array_length.h>
+#include <stdbool.h>
+#include <stddef.h>
+#include <support/xsignal.h>
+#include <support/xthread.h>
+#include <unistd.h>
+
+/* Set to true by timeout_thread_function when the test should
+ terminate. */
+static bool timeout;
+
+static void *
+timeout_thread_function (void *unused)
+{
+ usleep (1000 * 1000);
+ __atomic_store_n (&timeout, true, __ATOMIC_RELAXED);
+ return NULL;
+}
+
+/* Used to synchronize the sending threads with the target thread and
+ main thread. */
+static pthread_barrier_t barrier_1;
+static pthread_barrier_t barrier_2;
+
+/* The target thread to which signals are to be sent. */
+static pthread_t target_thread;
+
+/* Set by the main thread to true after timeout has been set to
+ true. */
+static bool exiting;
+
+static void *
+sender_thread_function (void *unused)
+{
+ while (true)
+ {
+ /* Wait until target_thread has been initialized. The target
+ thread and main thread participate in this barrier. */
+ xpthread_barrier_wait (&barrier_1);
+
+ if (exiting)
+ break;
+
+ xpthread_kill (target_thread, SIGUSR1);
+
+ /* Communicate that the signal has been sent. The main thread
+ participates in this barrier. */
+ xpthread_barrier_wait (&barrier_2);
+ }
+ return NULL;
+}
+
+static void *
+target_thread_function (void *unused)
+{
+ target_thread = pthread_self ();
+ xpthread_barrier_wait (&barrier_1);
+ return NULL;
+}
+
+static int
+do_test (void)
+{
+ xsignal (SIGUSR1, SIG_IGN);
+
+ pthread_t thr_timeout = xpthread_create (NULL, timeout_thread_function, NULL);
+
+ pthread_t threads[4];
+ xpthread_barrier_init (&barrier_1, NULL, array_length (threads) + 2);
+ xpthread_barrier_init (&barrier_2, NULL, array_length (threads) + 1);
+
+ for (int i = 0; i < array_length (threads); ++i)
+ threads[i] = xpthread_create (NULL, sender_thread_function, NULL);
+
+ while (!__atomic_load_n (&timeout, __ATOMIC_RELAXED))
+ {
+ xpthread_create (NULL, target_thread_function, NULL);
+
+ /* Wait for the target thread to be set up and signal sending to
+ start. */
+ xpthread_barrier_wait (&barrier_1);
+
+ /* Wait for signal sending to complete. */
+ xpthread_barrier_wait (&barrier_2);
+
+ xpthread_join (target_thread);
+ }
+
+ exiting = true;
+
+ /* Signal the sending threads to exit. */
+ xpthread_create (NULL, target_thread_function, NULL);
+ xpthread_barrier_wait (&barrier_1);
+
+ for (int i = 0; i < array_length (threads); ++i)
+ xpthread_join (threads[i]);
+ xpthread_join (thr_timeout);
+
+ return 0;
+}
+
+#include <support/test-driver.c>
--
1.8.3.1

37
nptl-Fix-type-of-pthread_mutexattr_getrobust_np-pthr.patch
View File

@ -1,37 +0,0 @@
From f3e664563361dc17530113b3205998d1f19dc4d9 Mon Sep 17 00:00:00 2001
From: Florian Weimer <fweimer@redhat.com>
Date: Tue, 21 Sep 2021 07:12:56 +0200
Subject: [PATCH] nptl: Fix type of pthread_mutexattr_getrobust_np,
pthread_mutexattr_setrobust_np (bug 28036)
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
Tested-by: Carlos O'Donell <carlos@redhat.com>
---
sysdeps/nptl/pthread.h | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/sysdeps/nptl/pthread.h b/sysdeps/nptl/pthread.h
index f1b7f2b..43146e9 100644
--- a/sysdeps/nptl/pthread.h
+++ b/sysdeps/nptl/pthread.h
@@ -933,7 +933,7 @@ extern int pthread_mutexattr_getrobust (const pthread_mutexattr_t *__attr,
# ifdef __USE_GNU
# ifdef __REDIRECT_NTH
extern int __REDIRECT_NTH (pthread_mutexattr_getrobust_np,
- (pthread_mutex_t *, int *),
+ (pthread_mutexattr_t *, int *),
pthread_mutexattr_getrobust) __nonnull ((1))
__attribute_deprecated_msg__ ("\
pthread_mutexattr_getrobust_np is deprecated, use pthread_mutexattr_getrobust");
@@ -949,7 +949,7 @@ extern int pthread_mutexattr_setrobust (pthread_mutexattr_t *__attr,
# ifdef __USE_GNU
# ifdef __REDIRECT_NTH
extern int __REDIRECT_NTH (pthread_mutexattr_setrobust_np,
- (pthread_mutex_t *, int),
+ (pthread_mutexattr_t *, int),
pthread_mutexattr_setrobust) __nonnull ((1))
__attribute_deprecated_msg__ ("\
pthread_mutexattr_setrobust_np is deprecated, use pthread_mutexattr_setrobust");
--
1.8.3.1

162
nptl-pthread_kill-must-send-signals-to-a-specific-th.patch
View File

@ -1,162 +0,0 @@
From eae81d70574e923ce3c59078b8df857ae192efa6 Mon Sep 17 00:00:00 2001
From: Florian Weimer <fweimer@redhat.com>
Date: Fri, 1 Oct 2021 18:16:41 +0200
Subject: [PATCH] nptl: pthread_kill must send signals to a specific thread [BZ
#28407]
The choice between the kill vs tgkill system calls is not just about
the TID reuse race, but also about whether the signal is sent to the
whole process (and any thread in it) or to a specific thread.
This was caught by the openposix test suite:
LTP: openposix test suite - FAIL: SIGUSR1 is member of new thread pendingset.
<https://gitlab.com/cki-project/kernel-tests/-/issues/764>
Fixes commit 526c3cf11ee9367344b6b15d669e4c3cb461a2be ("nptl: Fix race
between pthread_kill and thread exit (bug 12889)").
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
Tested-by: Carlos O'Donell <carlos@redhat.com>
---
nptl/pthread_kill.c | 4 +-
sysdeps/pthread/Makefile | 1 +
sysdeps/pthread/tst-pthread-raise-blocked-self.c | 92 ++++++++++++++++++++++++
3 files changed, 94 insertions(+), 3 deletions(-)
create mode 100644 sysdeps/pthread/tst-pthread-raise-blocked-self.c
diff --git a/nptl/pthread_kill.c b/nptl/pthread_kill.c
index a44dc8f..35bf1f9 100644
--- a/nptl/pthread_kill.c
+++ b/nptl/pthread_kill.c
@@ -40,7 +40,7 @@ __pthread_kill_implementation (pthread_t threadid, int signo, int no_tid)
below. POSIX only guarantees delivery of a single signal,
which may not be the right one.) */
pid_t tid = INTERNAL_SYSCALL_CALL (gettid);
- int ret = INTERNAL_SYSCALL_CALL (kill, tid, signo);
+ int ret = INTERNAL_SYSCALL_CALL (tgkill, __getpid (), tid, signo);
return INTERNAL_SYSCALL_ERROR_P (ret) ? INTERNAL_SYSCALL_ERRNO (ret) : 0;
}
@@ -59,8 +59,6 @@ __pthread_kill_implementation (pthread_t threadid, int signo, int no_tid)
ret = no_tid;
else
{
- /* Using tgkill is a safety measure. pd->exit_lock ensures that
- the target thread cannot exit. */
ret = INTERNAL_SYSCALL_CALL (tgkill, __getpid (), pd->tid, signo);
ret = INTERNAL_SYSCALL_ERROR_P (ret) ? INTERNAL_SYSCALL_ERRNO (ret) : 0;
}
diff --git a/sysdeps/pthread/Makefile b/sysdeps/pthread/Makefile
index d4bd2d4..0af9c59 100644
--- a/sysdeps/pthread/Makefile
+++ b/sysdeps/pthread/Makefile
@@ -121,6 +121,7 @@ tests += tst-cnd-basic tst-mtx-trylock tst-cnd-broadcast \
tst-pthread-setuid-loop \
tst-pthread_cancel-exited \
tst-pthread_cancel-select-loop \
+ tst-pthread-raise-blocked-self \
tst-pthread_kill-exited \
tst-pthread_kill-exiting \
# tests
diff --git a/sysdeps/pthread/tst-pthread-raise-blocked-self.c b/sysdeps/pthread/tst-pthread-raise-blocked-self.c
new file mode 100644
index 0000000..128e1a6
--- /dev/null
+++ b/sysdeps/pthread/tst-pthread-raise-blocked-self.c
@@ -0,0 +1,92 @@
+/* Test that raise sends signal to current thread even if blocked.
+ Copyright (C) 2021 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <https://www.gnu.org/licenses/>. */
+
+#include <signal.h>
+#include <support/check.h>
+#include <support/xsignal.h>
+#include <support/xthread.h>
+#include <pthread.h>
+#include <unistd.h>
+
+/* Used to create a dummy thread ID distinct from all other thread
+ IDs. */
+static void *
+noop (void *ignored)
+{
+ return NULL;
+}
+
+static volatile pthread_t signal_thread;
+
+static void
+signal_handler (int signo)
+{
+ signal_thread = pthread_self ();
+}
+
+/* Used to ensure that waiting_thread has launched and can accept
+ signals. */
+static pthread_barrier_t barrier;
+
+static void *
+waiting_thread (void *ignored)
+{
+ xpthread_barrier_wait (&barrier);
+ pause ();
+ return NULL;
+}
+
+static int
+do_test (void)
+{
+ xsignal (SIGUSR1, signal_handler);
+ xpthread_barrier_init (&barrier, NULL, 2);
+
+ /* Distinct thread ID value to */
+ pthread_t dummy = xpthread_create (NULL, noop, NULL);
+ signal_thread = dummy;
+
+ pthread_t helper = xpthread_create (NULL, waiting_thread, NULL);
+
+ /* Make sure that the thread is running. */
+ xpthread_barrier_wait (&barrier);
+
+ /* Block signals on this thread. */
+ sigset_t set;
+ sigfillset (&set);
+ xpthread_sigmask (SIG_BLOCK, &set, NULL);
+
+ /* Send the signal to this thread. It must not be delivered. */
+ raise (SIGUSR1);
+ TEST_VERIFY (signal_thread == dummy);
+
+ /* Wait a bit to give a chance for signal delivery (increases
+ chances of failure with bug 28407). */
+ usleep (50 * 1000);
+
+ /* Unblocking should cause synchronous delivery of the signal. */
+ xpthread_sigmask (SIG_UNBLOCK, &set, NULL);
+ TEST_VERIFY (signal_thread == pthread_self ());
+
+ xpthread_cancel (helper);
+ xpthread_join (helper);
+ xpthread_join (dummy);
+ return 0;
+}
+
+#include <support/test-driver.c>
--
1.8.3.1

142
nptl-pthread_kill-needs-to-return-ESRCH-for-old-prog.patch
View File

@ -1,142 +0,0 @@
From 95dba35bf05e4a5d69dfae5e9c9d4df3646a7f93 Mon Sep 17 00:00:00 2001
From: Florian Weimer <fweimer@redhat.com>
Date: Mon, 20 Sep 2021 14:56:08 +0200
Subject: [PATCH] nptl: pthread_kill needs to return ESRCH for old programs
(bug 19193)
The fix for bug 19193 breaks some old applications which appear
to use pthread_kill to probe if a thread is still running, something
that is not supported by POSIX.
---
nptl/pthread_kill.c | 37 ++++++++++++++++++++++++-------
sysdeps/pthread/tst-pthread_kill-exited.c | 21 ++++++++++++++++--
2 files changed, 48 insertions(+), 10 deletions(-)
diff --git a/nptl/pthread_kill.c b/nptl/pthread_kill.c
index fb7862e..a44dc8f 100644
--- a/nptl/pthread_kill.c
+++ b/nptl/pthread_kill.c
@@ -21,8 +21,11 @@
#include <pthreadP.h>
#include <shlib-compat.h>
-int
-__pthread_kill_internal (pthread_t threadid, int signo)
+/* Sends SIGNO to THREADID. If the thread is about to exit or has
+ already exited on the kernel side, return NO_TID. Otherwise return
+ 0 or an error code. */
+static int
+__pthread_kill_implementation (pthread_t threadid, int signo, int no_tid)
{
struct pthread *pd = (struct pthread *) threadid;
if (pd == THREAD_SELF)
@@ -52,11 +55,8 @@ __pthread_kill_internal (pthread_t threadid, int signo)
signal is either not observable (the target thread has already
blocked signals at this point), or it will fail, or it might be
delivered to a new, unrelated thread that has reused the TID.
- So do not actually send the signal. Do not report an error
- because the threadid argument is still valid (the thread ID
- lifetime has not ended), and ESRCH (for example) would be
- misleading. */
- ret = 0;
+ So do not actually send the signal. */
+ ret = no_tid;
else
{
/* Using tgkill is a safety measure. pd->exit_lock ensures that
@@ -72,6 +72,15 @@ __pthread_kill_internal (pthread_t threadid, int signo)
}
int
+__pthread_kill_internal (pthread_t threadid, int signo)
+{
+ /* Do not report an error in the no-tid case because the threadid
+ argument is still valid (the thread ID lifetime has not ended),
+ and ESRCH (for example) would be misleading. */
+ return __pthread_kill_implementation (threadid, signo, 0);
+}
+
+int
__pthread_kill (pthread_t threadid, int signo)
{
/* Disallow sending the signal we use for cancellation, timers,
@@ -81,6 +90,7 @@ __pthread_kill (pthread_t threadid, int signo)
return __pthread_kill_internal (threadid, signo);
}
+
/* Some architectures (for instance arm) might pull raise through libgcc, so
avoid the symbol version if it ends up being used on ld.so. */
#if !IS_IN(rtld)
@@ -88,6 +98,17 @@ libc_hidden_def (__pthread_kill)
versioned_symbol (libc, __pthread_kill, pthread_kill, GLIBC_2_34);
# if OTHER_SHLIB_COMPAT (libpthread, GLIBC_2_0, GLIBC_2_34)
-compat_symbol (libc, __pthread_kill, pthread_kill, GLIBC_2_0);
+/* Variant which returns ESRCH in the no-TID case, for backwards
+ compatibility. */
+int
+attribute_compat_text_section
+__pthread_kill_esrch (pthread_t threadid, int signo)
+{
+ if (__is_internal_signal (signo))
+ return EINVAL;
+
+ return __pthread_kill_implementation (threadid, signo, ESRCH);
+}
+compat_symbol (libc, __pthread_kill_esrch, pthread_kill, GLIBC_2_0);
# endif
#endif
diff --git a/sysdeps/pthread/tst-pthread_kill-exited.c b/sysdeps/pthread/tst-pthread_kill-exited.c
index 7575fb6..a2fddad 100644
--- a/sysdeps/pthread/tst-pthread_kill-exited.c
+++ b/sysdeps/pthread/tst-pthread_kill-exited.c
@@ -16,11 +16,15 @@
License along with the GNU C Library; if not, see
<https://www.gnu.org/licenses/>. */
-/* This test verifies that pthread_kill returns 0 (and not ESRCH) for
- a thread that has exited on the kernel side. */
+/* This test verifies that the default pthread_kill returns 0 (and not
+ ESRCH) for a thread that has exited on the kernel side. */
+#include <errno.h>
+#include <pthread.h>
+#include <shlib-compat.h>
#include <signal.h>
#include <stddef.h>
+#include <support/check.h>
#include <support/support.h>
#include <support/xthread.h>
@@ -30,6 +34,12 @@ noop_thread (void *closure)
return NULL;
}
+#if TEST_COMPAT (libpthread, GLIBC_2_0, GLIBC_2_34) && PTHREAD_IN_LIBC
+extern __typeof (pthread_kill) compat_pthread_kill;
+compat_symbol_reference (libpthread, compat_pthread_kill, pthread_kill,
+ GLIBC_2_0);
+#endif
+
static int
do_test (void)
{
@@ -37,7 +47,14 @@ do_test (void)
support_wait_for_thread_exit ();
+ /* NB: Always uses the default symbol due to separate compilation. */
xpthread_kill (thr, SIGUSR1);
+
+#if TEST_COMPAT (libpthread, GLIBC_2_0, GLIBC_2_34) && PTHREAD_IN_LIBC
+ /* Old binaries need the non-conforming ESRCH error code. */
+ TEST_COMPARE (compat_pthread_kill (thr, SIGUSR1), ESRCH);
+#endif
+
xpthread_join (thr);
return 0;
--
1.8.3.1

292
nptl-pthread_kill-pthread_cancel-should-not-fail-aft.patch
View File

@ -1,292 +0,0 @@
From 8af8456004edbab71f8903a60a3cae442cf6fe69 Mon Sep 17 00:00:00 2001
From: Florian Weimer <fweimer@redhat.com>
Date: Mon, 13 Sep 2021 11:06:08 +0200
Subject: [PATCH] nptl: pthread_kill, pthread_cancel should not fail after exit
(bug 19193)
This closes one remaining race condition related to bug 12889: if
the thread already exited on the kernel side, returning ESRCH
is not correct because that error is reserved for the thread IDs
(pthread_t values) whose lifetime has ended. In case of a
kernel-side exit and a valid thread ID, no signal needs to be sent
and cancellation does not have an effect, so just return 0.
sysdeps/pthread/tst-kill4.c triggers undefined behavior and is
removed with this commit.
Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
---
nptl/pthread_cancel.c | 9 +--
nptl/pthread_kill.c | 7 ++-
sysdeps/pthread/Makefile | 5 +-
sysdeps/pthread/tst-kill4.c | 90 -----------------------------
sysdeps/pthread/tst-pthread_cancel-exited.c | 45 +++++++++++++++
sysdeps/pthread/tst-pthread_kill-exited.c | 46 +++++++++++++++
6 files changed, 106 insertions(+), 96 deletions(-)
delete mode 100644 sysdeps/pthread/tst-kill4.c
create mode 100644 sysdeps/pthread/tst-pthread_cancel-exited.c
create mode 100644 sysdeps/pthread/tst-pthread_kill-exited.c
diff --git a/nptl/pthread_cancel.c b/nptl/pthread_cancel.c
index 2bb523c..a8aa3b3 100644
--- a/nptl/pthread_cancel.c
+++ b/nptl/pthread_cancel.c
@@ -61,10 +61,11 @@ __pthread_cancel (pthread_t th)
{
volatile struct pthread *pd = (volatile struct pthread *) th;
- /* Make sure the descriptor is valid. */
- if (INVALID_TD_P (pd))
- /* Not a valid thread handle. */
- return ESRCH;
+ if (pd->tid == 0)
+ /* The thread has already exited on the kernel side. Its outcome
+ (regular exit, other cancelation) has already been
+ determined. */
+ return 0;
static int init_sigcancel = 0;
if (atomic_load_relaxed (&init_sigcancel) == 0)
diff --git a/nptl/pthread_kill.c b/nptl/pthread_kill.c
index f79a2b2..5d4c86f 100644
--- a/nptl/pthread_kill.c
+++ b/nptl/pthread_kill.c
@@ -46,7 +46,12 @@ __pthread_kill_internal (pthread_t threadid, int signo)
? INTERNAL_SYSCALL_ERRNO (val) : 0);
}
else
- val = ESRCH;
+ /* The kernel reports that the thread has exited. POSIX specifies
+ the ESRCH error only for the case when the lifetime of a thread
+ ID has ended, but calling pthread_kill on such a thread ID is
+ undefined in glibc. Therefore, do not treat kernel thread exit
+ as an error. */
+ val = 0;
return val;
}
diff --git a/sysdeps/pthread/Makefile b/sysdeps/pthread/Makefile
index 42f9fc5..dedfa0d 100644
--- a/sysdeps/pthread/Makefile
+++ b/sysdeps/pthread/Makefile
@@ -89,7 +89,7 @@ tests += tst-cnd-basic tst-mtx-trylock tst-cnd-broadcast \
tst-join8 tst-join9 tst-join10 tst-join11 tst-join12 tst-join13 \
tst-join14 tst-join15 \
tst-key1 tst-key2 tst-key3 tst-key4 \
- tst-kill1 tst-kill2 tst-kill3 tst-kill4 tst-kill5 tst-kill6 \
+ tst-kill1 tst-kill2 tst-kill3 tst-kill5 tst-kill6 \
tst-locale1 tst-locale2 \
tst-memstream \
tst-mutex-errorcheck tst-mutex1 tst-mutex2 tst-mutex3 tst-mutex4 \
@@ -118,6 +118,9 @@ tests += tst-cnd-basic tst-mtx-trylock tst-cnd-broadcast \
tst-unload \
tst-unwind-thread \
tst-pt-vfork1 tst-pt-vfork2 tst-vfork1x tst-vfork2x \
+ tst-pthread_cancel-exited \
+ tst-pthread_kill-exited \
+ # tests
tests-time64 := \
tst-abstime-time64 \
diff --git a/sysdeps/pthread/tst-kill4.c b/sysdeps/pthread/tst-kill4.c
deleted file mode 100644
index 222ceb7..0000000
--- a/sysdeps/pthread/tst-kill4.c
+++ /dev/null
@@ -1,90 +0,0 @@
-/* Copyright (C) 2003-2021 Free Software Foundation, Inc.
- This file is part of the GNU C Library.
- Contributed by Ulrich Drepper <drepper@redhat.com>, 2003.
-
- The GNU C Library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Lesser General Public
- License as published by the Free Software Foundation; either
- version 2.1 of the License, or (at your option) any later version.
-
- The GNU C Library is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Lesser General Public License for more details.
-
- You should have received a copy of the GNU Lesser General Public
- License along with the GNU C Library; if not, see
- <https://www.gnu.org/licenses/>. */
-
-#include <errno.h>
-#include <pthread.h>
-#include <signal.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <unistd.h>
-
-
-static void *
-tf (void *a)
-{
- return NULL;
-}
-
-
-int
-do_test (void)
-{
- pthread_attr_t at;
- if (pthread_attr_init (&at) != 0)
- {
- puts ("attr_create failed");
- exit (1);
- }
-
- /* Limit thread stack size, because if it is too large, pthread_join
- will free it immediately rather than put it into stack cache. */
- if (pthread_attr_setstacksize (&at, 2 * 1024 * 1024) != 0)
- {
- puts ("setstacksize failed");
- exit (1);
- }
-
- pthread_t th;
- if (pthread_create (&th, &at, tf, NULL) != 0)
- {
- puts ("create failed");
- exit (1);
- }
-
- pthread_attr_destroy (&at);
-
- if (pthread_join (th, NULL) != 0)
- {
- puts ("join failed");
- exit (1);
- }
-
- /* The following only works because we assume here something about
- the implementation. Namely, that the memory allocated for the
- thread descriptor is not going away, that the TID field is
- cleared and therefore the signal is sent to process 0, and that
- we can savely assume there is no other process with this ID at
- that time. */
- int e = pthread_kill (th, 0);
- if (e == 0)
- {
- puts ("pthread_kill succeeded");
- exit (1);
- }
- if (e != ESRCH)
- {
- puts ("pthread_kill didn't return ESRCH");
- exit (1);
- }
-
- return 0;
-}
-
-
-#define TEST_FUNCTION do_test ()
-#include "../test-skeleton.c"
diff --git a/sysdeps/pthread/tst-pthread_cancel-exited.c b/sysdeps/pthread/tst-pthread_cancel-exited.c
new file mode 100644
index 0000000..811c9be
--- /dev/null
+++ b/sysdeps/pthread/tst-pthread_cancel-exited.c
@@ -0,0 +1,45 @@
+/* Test that pthread_kill succeeds for an exited thread.
+ Copyright (C) 2021 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <https://www.gnu.org/licenses/>. */
+
+/* This test verifies that pthread_kill returns 0 (and not ESRCH) for
+ a thread that has exited on the kernel side. */
+
+#include <stddef.h>
+#include <support/support.h>
+#include <support/xthread.h>
+
+static void *
+noop_thread (void *closure)
+{
+ return NULL;
+}
+
+static int
+do_test (void)
+{
+ pthread_t thr = xpthread_create (NULL, noop_thread, NULL);
+
+ support_wait_for_thread_exit ();
+
+ xpthread_cancel (thr);
+ xpthread_join (thr);
+
+ return 0;
+}
+
+#include <support/test-driver.c>
diff --git a/sysdeps/pthread/tst-pthread_kill-exited.c b/sysdeps/pthread/tst-pthread_kill-exited.c
new file mode 100644
index 0000000..7575fb6
--- /dev/null
+++ b/sysdeps/pthread/tst-pthread_kill-exited.c
@@ -0,0 +1,46 @@
+/* Test that pthread_kill succeeds for an exited thread.
+ Copyright (C) 2021 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <https://www.gnu.org/licenses/>. */
+
+/* This test verifies that pthread_kill returns 0 (and not ESRCH) for
+ a thread that has exited on the kernel side. */
+
+#include <signal.h>
+#include <stddef.h>
+#include <support/support.h>
+#include <support/xthread.h>
+
+static void *
+noop_thread (void *closure)
+{
+ return NULL;
+}
+
+static int
+do_test (void)
+{
+ pthread_t thr = xpthread_create (NULL, noop_thread, NULL);
+
+ support_wait_for_thread_exit ();
+
+ xpthread_kill (thr, SIGUSR1);
+ xpthread_join (thr);
+
+ return 0;
+}
+
+#include <support/test-driver.c>
--
1.8.3.1

50
posix-Fix-attribute-access-mode-on-getcwd-BZ-27476.patch
View File

@ -1,50 +0,0 @@
From 433ec4f14a5753c7689c83c20c9972915c53c204 Mon Sep 17 00:00:00 2001
From: Aurelien Jarno <aurelien@aurel32.net>
Date: Fri, 10 Sep 2021 19:39:35 +0200
Subject: [PATCH] posix: Fix attribute access mode on getcwd [BZ #27476]
There is a GNU extension that allows to call getcwd(NULL, >0). It is
described in the documentation, but also directly in the unistd.h
header, just above the declaration.
Therefore the attribute access mode added in commit 06febd8c6705
is not correct. Drop it.
---
posix/bits/unistd.h | 5 ++---
posix/unistd.h | 3 +--
2 files changed, 3 insertions(+), 5 deletions(-)
diff --git a/posix/bits/unistd.h b/posix/bits/unistd.h
index f083138..622adeb 100644
--- a/posix/bits/unistd.h
+++ b/posix/bits/unistd.h
@@ -199,10 +199,9 @@ __NTH (readlinkat (int __fd, const char *__restrict __path,
#endif
extern char *__getcwd_chk (char *__buf, size_t __size, size_t __buflen)
- __THROW __wur __attr_access ((__write_only__, 1, 2));
+ __THROW __wur;
extern char *__REDIRECT_NTH (__getcwd_alias,
- (char *__buf, size_t __size), getcwd)
- __wur __attr_access ((__write_only__, 1, 2));
+ (char *__buf, size_t __size), getcwd) __wur;
extern char *__REDIRECT_NTH (__getcwd_chk_warn,
(char *__buf, size_t __size, size_t __buflen),
__getcwd_chk)
diff --git a/posix/unistd.h b/posix/unistd.h
index 3dca657..8224c5f 100644
--- a/posix/unistd.h
+++ b/posix/unistd.h
@@ -528,8 +528,7 @@ extern int fchdir (int __fd) __THROW __wur;
an array is allocated with `malloc'; the array is SIZE
bytes long, unless SIZE == 0, in which case it is as
big as necessary. */
-extern char *getcwd (char *__buf, size_t __size) __THROW __wur
- __attr_access ((__write_only__, 1, 2));
+extern char *getcwd (char *__buf, size_t __size) __THROW __wur;
#ifdef __USE_GNU
/* Return a malloc'd string containing the current directory name.
--
1.8.3.1

41
pthread-tst-cancel28-Fix-barrier-re-init-race-condit.patch
View File

@ -1,41 +0,0 @@
From 9874ca536b1d0662b1cea46af3ce09a4d42aeb32 Mon Sep 17 00:00:00 2001
From: Stafford Horne <shorne@gmail.com>
Date: Sat, 25 Sep 2021 17:02:06 +0900
Subject: [PATCH] pthread/tst-cancel28: Fix barrier re-init race condition
When running this test on the OpenRISC port I am working on this test
fails with a timeout. The test passes when being straced or debugged.
Looking at the code there seems to be a race condition in that:
1 main thread: calls xpthread_cancel
2 sub thread : receives cancel signal
3 sub thread : cleanup routine waits on barrier
4 main thread: re-inits barrier
5 main thread: waits on barrier
After getting to 5 the main thread and sub thread wait forever as the 2
barriers are no longer the same.
Removing the barrier re-init seems to fix this issue. Also, the barrier
does not need to be reinitialized as that is done by default.
Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
---
sysdeps/pthread/tst-cancel28.c | 1 -
1 file changed, 1 deletion(-)
diff --git a/sysdeps/pthread/tst-cancel28.c b/sysdeps/pthread/tst-cancel28.c
index 627cbc8..9286c15 100644
--- a/sysdeps/pthread/tst-cancel28.c
+++ b/sysdeps/pthread/tst-cancel28.c
@@ -69,7 +69,6 @@ do_test (void)
xpthread_cancel (timer_thread);
- xpthread_barrier_init (&barrier, NULL, 2);
xpthread_barrier_wait (&barrier);
return 0;
--
1.8.3.1

60
riscv-Drop-reliance-on-_GLOBAL_OFFSET_TABLE_-0.patch
View File

@ -1,60 +0,0 @@
From 34b4624b04fc8f038b2c329ca7560197320615b4 Mon Sep 17 00:00:00 2001
From: Fangrui Song <maskray@google.com>
Date: Wed, 18 Aug 2021 10:01:31 -0700
Subject: [PATCH] riscv: Drop reliance on _GLOBAL_OFFSET_TABLE_[0]
&__ehdr_start is a better way to get the load address.
This is similar to commits b37b75d269883a2c553bb7019a813094eb4e2dd1
(x86-64) and 43d06ed218fc8be58987bdfd00e21e5720f0b862 (aarch64).
Reviewed-by: Palmer Dabbelt <palmerdabbelt@google.com>
---
sysdeps/riscv/dl-machine.h | 21 ++++++++++-----------
1 file changed, 10 insertions(+), 11 deletions(-)
diff --git a/sysdeps/riscv/dl-machine.h b/sysdeps/riscv/dl-machine.h
index aedf69f..5b07461 100644
--- a/sysdeps/riscv/dl-machine.h
+++ b/sysdeps/riscv/dl-machine.h
@@ -76,27 +76,26 @@ elf_machine_matches_host (const ElfW(Ehdr) *ehdr)
return 1;
}
+/* Return the run-time load address of the shared object. */
+static inline ElfW(Addr)
+elf_machine_load_address (void)
+{
+ extern const ElfW(Ehdr) __ehdr_start attribute_hidden;
+ return (ElfW(Addr)) &__ehdr_start;
+}
+
/* Return the link-time address of _DYNAMIC. */
static inline ElfW(Addr)
elf_machine_dynamic (void)
{
- extern ElfW(Addr) _GLOBAL_OFFSET_TABLE_ __attribute__ ((visibility ("hidden")));
- return _GLOBAL_OFFSET_TABLE_;
+ extern ElfW(Dyn) _DYNAMIC[] attribute_hidden;
+ return (ElfW(Addr)) _DYNAMIC - elf_machine_load_address ();
}
#define STRINGXP(X) __STRING (X)
#define STRINGXV(X) STRINGV_ (X)
#define STRINGV_(...) # __VA_ARGS__
-/* Return the run-time load address of the shared object. */
-static inline ElfW(Addr)
-elf_machine_load_address (void)
-{
- ElfW(Addr) load_addr;
- asm ("lla %0, _DYNAMIC" : "=r" (load_addr));
- return load_addr - elf_machine_dynamic ();
-}
-
/* Initial entry point code for the dynamic linker.
The C function `_dl_start' is the real entry point;
its return value is the user program's entry point. */
--
1.8.3.1

35
rt-Set-the-correct-message-queue-for-tst-mqueue10.patch
View File

@ -1,35 +0,0 @@
From 3d9a539ee66165148b2b9e08b46e03a5f58f65d2 Mon Sep 17 00:00:00 2001
From: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Date: Wed, 4 Aug 2021 17:14:46 -0300
Subject: [PATCH] rt: Set the correct message queue for tst-mqueue10
Checked on x86_64-linux-gnu.
---
rt/tst-mqueue10.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/rt/tst-mqueue10.c b/rt/tst-mqueue10.c
index 1879580..0bf64d7 100644
--- a/rt/tst-mqueue10.c
+++ b/rt/tst-mqueue10.c
@@ -25,7 +25,7 @@
#include <support/temp_file.h>
#include <unistd.h>
-static char name[sizeof "/tst-mqueue2-" + INT_BUFSIZE_BOUND (pid_t)];
+static char name[sizeof "/tst-mqueue10-" + INT_BUFSIZE_BOUND (pid_t)];
static void
do_cleanup (void)
@@ -37,7 +37,7 @@ do_cleanup (void)
static int
do_test (void)
{
- snprintf (name, sizeof (name), "/tst-mqueue2-%u", getpid ());
+ snprintf (name, sizeof (name), "/tst-mqueue10-%u", getpid ());
char msg[8] = { 0x55 };
--
1.8.3.1

28
rtld-copy-terminating-null-in-tunables_strdup-bug-28.patch
View File

@ -1,28 +0,0 @@
From a4f5a3103fc3e7974dbe35b411cba9f670807cde Mon Sep 17 00:00:00 2001
From: Andreas Schwab <schwab@linux-m68k.org>
Date: Mon, 23 Aug 2021 10:19:52 +0200
Subject: [PATCH] rtld: copy terminating null in tunables_strdup (bug 28256)
Avoid triggering a false positive from valgrind by copying the terminating
null in tunables_strdup. At this point the heap is still clean, but
valgrind is stricter here.
---
elf/dl-tunables.c | 2 --
1 file changed, 2 deletions(-)
diff --git a/elf/dl-tunables.c b/elf/dl-tunables.c
index 8009e54..1666736 100644
--- a/elf/dl-tunables.c
+++ b/elf/dl-tunables.c
@@ -56,8 +56,6 @@ tunables_strdup (const char *in)
if (out == (void *)-1)
_dl_fatal_printf ("sbrk() failure while processing tunables\n");
- i--;
-
while (i-- > 0)
out[i] = in[i];
--
1.8.3.1

363
support-Add-support_open_dev_null_range.patch
View File

@ -1,363 +0,0 @@
From e814f4b04ee413a7bb3dfa43e74c8fb4abf58359 Mon Sep 17 00:00:00 2001
From: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Date: Tue, 24 Aug 2021 16:12:24 -0300
Subject: [PATCH] support: Add support_open_dev_null_range
It returns a range of file descriptor referring to the '/dev/null'
pathname. The function takes care of restarting the open range
if a file descriptor is found within the specified range and
also increases RLIMIT_NOFILE if required.
Checked on x86_64-linux-gnu.
---
support/Makefile | 2 +
support/support-open-dev-null-range.c | 134 ++++++++++++++++++++++++++
support/support.h | 8 ++
support/tst-support-open-dev-null-range.c | 155 ++++++++++++++++++++++++++++++
4 files changed, 299 insertions(+)
create mode 100644 support/support-open-dev-null-range.c
create mode 100644 support/tst-support-open-dev-null-range.c
diff --git a/support/Makefile b/support/Makefile
index a462781..6332e7b 100644
--- a/support/Makefile
+++ b/support/Makefile
@@ -66,6 +66,7 @@ libsupport-routines = \
support_path_support_time64 \
support_process_state \
support_ptrace \
+ support-open-dev-null-range \
support_openpty \
support_paths \
support_quote_blob \
@@ -264,6 +265,7 @@ tests = \
tst-support_capture_subprocess \
tst-support_descriptors \
tst-support_format_dns_packet \
+ tst-support-open-dev-null-range \
tst-support-process_state \
tst-support_quote_blob \
tst-support_quote_string \
diff --git a/support/support-open-dev-null-range.c b/support/support-open-dev-null-range.c
new file mode 100644
index 0000000..80d9dba
--- /dev/null
+++ b/support/support-open-dev-null-range.c
@@ -0,0 +1,134 @@
+/* Return a range of open file descriptors.
+ Copyright (C) 2021 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <https://www.gnu.org/licenses/>. */
+
+#include <errno.h>
+#include <fcntl.h>
+#include <support/support.h>
+#include <support/check.h>
+#include <support/xunistd.h>
+#include <stdlib.h>
+#include <sys/resource.h>
+
+static void
+increase_nofile (void)
+{
+ struct rlimit rl;
+ if (getrlimit (RLIMIT_NOFILE, &rl) == -1)
+ FAIL_EXIT1 ("getrlimit (RLIMIT_NOFILE): %m");
+
+ rl.rlim_cur += 128;
+
+ if (setrlimit (RLIMIT_NOFILE, &rl) == 1)
+ FAIL_EXIT1 ("setrlimit (RLIMIT_NOFILE): %m");
+}
+
+static int
+open_dev_null (int flags, mode_t mode)
+{
+ int fd = open64 ("/dev/null", flags, mode);
+ if (fd > 0)
+ return fd;
+
+ if (fd < 0 && errno != EMFILE)
+ FAIL_EXIT1 ("open64 (\"/dev/null\", 0x%x, 0%o): %m", flags, mode);
+
+ increase_nofile ();
+
+ return xopen ("/dev/null", flags, mode);
+}
+
+struct range
+{
+ int lowfd;
+ size_t len;
+};
+
+struct range_list
+{
+ size_t total;
+ size_t used;
+ struct range *ranges;
+};
+
+static void
+range_init (struct range_list *r)
+{
+ r->total = 8;
+ r->used = 0;
+ r->ranges = xmalloc (r->total * sizeof (struct range));
+}
+
+static void
+range_add (struct range_list *r, int lowfd, size_t len)
+{
+ if (r->used == r->total)
+ {
+ r->total *= 2;
+ r->ranges = xrealloc (r->ranges, r->total * sizeof (struct range));
+ }
+ r->ranges[r->used].lowfd = lowfd;
+ r->ranges[r->used].len = len;
+ r->used++;
+}
+
+static void
+range_close (struct range_list *r)
+{
+ for (size_t i = 0; i < r->used; i++)
+ {
+ int minfd = r->ranges[i].lowfd;
+ int maxfd = r->ranges[i].lowfd + r->ranges[i].len;
+ for (int fd = minfd; fd < maxfd; fd++)
+ xclose (fd);
+ }
+ free (r->ranges);
+}
+
+int
+support_open_dev_null_range (int num, int flags, mode_t mode)
+{
+ /* We keep track of the ranges that hit an already opened descriptor, so
+ we close them after we get a working range. */
+ struct range_list rl;
+ range_init (&rl);
+
+ int lowfd = open_dev_null (flags, mode);
+ int prevfd = lowfd;
+ while (true)
+ {
+ int i = 1;
+ for (; i < num; i++)
+ {
+ int fd = open_dev_null (flags, mode);
+ if (fd != lowfd + i)
+ {
+ range_add (&rl, lowfd, prevfd - lowfd + 1);
+
+ prevfd = lowfd = fd;
+ break;
+ }
+ prevfd = fd;
+ }
+ if (i == num)
+ break;
+ }
+
+ range_close (&rl);
+
+ return lowfd;
+}
diff --git a/support/support.h b/support/support.h
index 834dba9..e6911e1 100644
--- a/support/support.h
+++ b/support/support.h
@@ -193,6 +193,14 @@ struct support_stack support_stack_alloc (size_t size);
/* Deallocate the STACK. */
void support_stack_free (struct support_stack *stack);
+
+/* Create a range of NUM opened '/dev/null' file descriptors using FLAGS and
+ MODE. The function takes care of restarting the open range if a file
+ descriptor is found within the specified range and also increases
+ RLIMIT_NOFILE if required.
+ The returned value is the lowest file descriptor number. */
+int support_open_dev_null_range (int num, int flags, mode_t mode);
+
__END_DECLS
#endif /* SUPPORT_H */
diff --git a/support/tst-support-open-dev-null-range.c b/support/tst-support-open-dev-null-range.c
new file mode 100644
index 0000000..8e29def
--- /dev/null
+++ b/support/tst-support-open-dev-null-range.c
@@ -0,0 +1,155 @@
+/* Tests for support_open_dev_null_range.
+ Copyright (C) 2021 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <https://www.gnu.org/licenses/>. */
+
+#include <errno.h>
+#include <dirent.h>
+#include <fcntl.h>
+#include <limits.h>
+#include <support/check.h>
+#include <support/support.h>
+#include <support/xunistd.h>
+#include <sys/resource.h>
+#include <stdlib.h>
+
+#ifndef PATH_MAX
+# define PATH_MAX 1024
+#endif
+
+#include <stdio.h>
+
+static void
+check_path (int fd)
+{
+ char *proc_fd_path = xasprintf ("/proc/self/fd/%d", fd);
+ char file_path[PATH_MAX];
+ ssize_t file_path_length
+ = readlink (proc_fd_path, file_path, sizeof (file_path));
+ free (proc_fd_path);
+ if (file_path_length < 0)
+ FAIL_EXIT1 ("readlink (%s, %p, %zu)", proc_fd_path, file_path,
+ sizeof (file_path));
+ file_path[file_path_length] = '\0';
+ TEST_COMPARE_STRING (file_path, "/dev/null");
+}
+
+static int
+number_of_opened_files (void)
+{
+ DIR *fds = opendir ("/proc/self/fd");
+ if (fds == NULL)
+ FAIL_EXIT1 ("opendir (\"/proc/self/fd\"): %m");
+
+ int r = 0;
+ while (true)
+ {
+ errno = 0;
+ struct dirent64 *e = readdir64 (fds);
+ if (e == NULL)
+ {
+ if (errno != 0)
+ FAIL_EXIT1 ("readdir: %m");
+ break;
+ }
+
+ if (e->d_name[0] == '.')
+ continue;
+
+ char *endptr;
+ long int fd = strtol (e->d_name, &endptr, 10);
+ if (*endptr != '\0' || fd < 0 || fd > INT_MAX)
+ FAIL_EXIT1 ("readdir: invalid file descriptor name: /proc/self/fd/%s",
+ e->d_name);
+
+ /* Skip the descriptor which is used to enumerate the
+ descriptors. */
+ if (fd == dirfd (fds))
+ continue;
+
+ r = r + 1;
+ }
+
+ closedir (fds);
+
+ return r;
+}
+
+static int
+do_test (void)
+{
+ const int nfds1 = 8;
+ int lowfd = support_open_dev_null_range (nfds1, O_RDONLY, 0600);
+ for (int i = 0; i < nfds1; i++)
+ {
+ TEST_VERIFY (fcntl (lowfd + i, F_GETFL) > -1);
+ check_path (lowfd + i);
+ }
+
+ /* create some gaps. */
+ xclose (lowfd + 1);
+ xclose (lowfd + 5);
+ xclose (lowfd + 6);
+
+ const int nfds2 = 16;
+ int lowfd2 = support_open_dev_null_range (nfds2, O_RDONLY, 0600);
+ for (int i = 0; i < nfds2; i++)
+ {
+ TEST_VERIFY (fcntl (lowfd2 + i, F_GETFL) > -1);
+ check_path (lowfd2 + i);
+ }
+
+ /* Decrease the maximum number of files. */
+ {
+ struct rlimit rl;
+ if (getrlimit (RLIMIT_NOFILE, &rl) == -1)
+ FAIL_EXIT1 ("getrlimit (RLIMIT_NOFILE): %m");
+
+ rl.rlim_cur = number_of_opened_files ();
+
+ if (setrlimit (RLIMIT_NOFILE, &rl) == 1)
+ FAIL_EXIT1 ("setrlimit (RLIMIT_NOFILE): %m");
+ }
+
+ const int nfds3 = 16;
+ int lowfd3 = support_open_dev_null_range (nfds3, O_RDONLY, 0600);
+ for (int i = 0; i < nfds3; i++)
+ {
+ TEST_VERIFY (fcntl (lowfd3 + i, F_GETFL) > -1);
+ check_path (lowfd3 + i);
+ }
+
+ /* create a lot of gaps to trigger the range extension. */
+ xclose (lowfd3 + 1);
+ xclose (lowfd3 + 3);
+ xclose (lowfd3 + 5);
+ xclose (lowfd3 + 7);
+ xclose (lowfd3 + 9);
+ xclose (lowfd3 + 11);
+ xclose (lowfd3 + 13);
+
+ const int nfds4 = 16;
+ int lowfd4 = support_open_dev_null_range (nfds4, O_RDONLY, 0600);
+ for (int i = 0; i < nfds4; i++)
+ {
+ TEST_VERIFY (fcntl (lowfd4 + i, F_GETFL) > -1);
+ check_path (lowfd4 + i);
+ }
+
+ return 0;
+}
+
+#include <support/test-driver.c>
--
1.8.3.1

124
support-Add-support_wait_for_thread_exit.patch
View File

@ -1,124 +0,0 @@
From 032d74eaf6179100048a5bf0ce942e97dc8b9a60 Mon Sep 17 00:00:00 2001
From: Florian Weimer <fweimer@redhat.com>
Date: Mon, 30 Aug 2021 13:43:56 +0200
Subject: [PATCH] support: Add support_wait_for_thread_exit
---
support/Makefile | 3 +-
support/support.h | 4 ++
support/support_wait_for_thread_exit.c | 72 ++++++++++++++++++++++++++++++++++
3 files changed, 78 insertions(+), 1 deletion(-)
create mode 100644 support/support_wait_for_thread_exit.c
diff --git a/support/Makefile b/support/Makefile
index 6332e7b..2a07317 100644
--- a/support/Makefile
+++ b/support/Makefile
@@ -83,9 +83,10 @@ libsupport-routines = \
support_test_compare_blob \
support_test_compare_failure \
support_test_compare_string \
- support_write_file_string \
support_test_main \
support_test_verify_impl \
+ support_wait_for_thread_exit \
+ support_write_file_string \
temp_file \
timespec \
timespec-time64 \
diff --git a/support/support.h b/support/support.h
index e6911e1..c219e0d 100644
--- a/support/support.h
+++ b/support/support.h
@@ -174,6 +174,10 @@ timer_t support_create_timer (uint64_t sec, long int nsec, bool repeat,
/* Disable the timer TIMER. */
void support_delete_timer (timer_t timer);
+/* Wait until all threads except the current thread have exited (as
+ far as the kernel is concerned). */
+void support_wait_for_thread_exit (void);
+
struct support_stack
{
void *stack;
diff --git a/support/support_wait_for_thread_exit.c b/support/support_wait_for_thread_exit.c
new file mode 100644
index 0000000..658a813
--- /dev/null
+++ b/support/support_wait_for_thread_exit.c
@@ -0,0 +1,72 @@
+/* Wait until all threads except the current thread has exited.
+ Copyright (C) 2021 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <https://www.gnu.org/licenses/>. */
+
+#include <dirent.h>
+#include <errno.h>
+#include <string.h>
+#include <support/check.h>
+#include <support/support.h>
+#include <unistd.h>
+
+void
+support_wait_for_thread_exit (void)
+{
+#ifdef __linux__
+ DIR *proc_self_task = opendir ("/proc/self/task");
+ TEST_VERIFY_EXIT (proc_self_task != NULL);
+
+ while (true)
+ {
+ errno = 0;
+ struct dirent *e = readdir (proc_self_task);
+ if (e == NULL && errno != 0)
+ FAIL_EXIT1 ("readdir: %m");
+ if (e == NULL)
+ {
+ /* Only the main thread remains. Testing may continue. */
+ closedir (proc_self_task);
+ return;
+ }
+
+ if (strcmp (e->d_name, ".") == 0 || strcmp (e->d_name, "..") == 0)
+ continue;
+
+ int task_tid = atoi (e->d_name);
+ if (task_tid <= 0)
+ FAIL_EXIT1 ("Invalid /proc/self/task entry: %s", e->d_name);
+
+ if (task_tid == gettid ())
+ /* The current thread. Keep scanning for other
+ threads. */
+ continue;
+
+ /* task_tid does not refer to this thread here, i.e., there is
+ another running thread. */
+
+ /* Small timeout to give the thread a chance to exit. */
+ usleep (50 * 1000);
+
+ /* Start scanning the directory from the start. */
+ rewinddir (proc_self_task);
+ }
+#else
+ /* Use a large timeout because we cannot verify that the thread has
+ exited. */
+ usleep (5 * 1000 * 1000);
+#endif
+}
--
1.8.3.1

90
time-Fix-overflow-itimer-tests-on-32-bit-systems.patch
View File

@ -1,90 +0,0 @@
From 6e8a0aac2f883a23efb1683b120499138f9e6021 Mon Sep 17 00:00:00 2001
From: Stafford Horne <shorne@gmail.com>
Date: Mon, 7 Jun 2021 22:10:19 +0900
Subject: [PATCH] time: Fix overflow itimer tests on 32-bit systems
On the port of OpenRISC I am working on and it appears the rv32 port
we have sets __TIMESIZE == 64 && __WORDSIZE == 32. This causes the
size of time_t to be 8 bytes, but the tv_sec in the kernel is still 32-bit
causing truncation.
The truncations are unavoidable on these systems so skip the
testing/failures by guarding with __KERNEL_OLD_TIMEVAL_MATCHES_TIMEVAL64.
Also, futher in the tests and in other parts of code checking for time_t
overflow does not work on 32-bit systems when time_t is 64-bit. As
suggested by Adhemerval, update the in_time_t_range function to assume
32-bits by using int32_t.
This also brings in the header for stdint.h so we can update other
usages of __int32_t to int32_t as suggested by Adhemerval.
Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
---
include/time.h | 10 ++++++----
time/tst-itimer.c | 4 ++--
2 files changed, 8 insertions(+), 6 deletions(-)
diff --git a/include/time.h b/include/time.h
index 22b29ca..127347e 100644
--- a/include/time.h
+++ b/include/time.h
@@ -11,6 +11,7 @@
# include <sys/time.h>
# include <time-clockid.h>
# include <sys/time.h>
+# include <stdint.h>
extern __typeof (strftime_l) __strftime_l;
libc_hidden_proto (__strftime_l)
@@ -342,11 +343,12 @@ libc_hidden_proto (__time64)
actual clock ID. */
#define CLOCK_IDFIELD_SIZE 3
-/* Check whether T fits in time_t. */
+/* Check whether T fits in int32_t, assume all usages are for
+ sizeof(time_t) == 32. */
static inline bool
in_time_t_range (__time64_t t)
{
- time_t s = t;
+ int32_t s = t;
return s == t;
}
@@ -453,8 +455,8 @@ timespec64_to_timeval64 (const struct __timespec64 ts64)
and suseconds_t. */
struct __timeval32
{
- __int32_t tv_sec; /* Seconds. */
- __int32_t tv_usec; /* Microseconds. */
+ int32_t tv_sec; /* Seconds. */
+ int32_t tv_usec; /* Microseconds. */
};
/* Conversion functions for converting to/from __timeval32 */
diff --git a/time/tst-itimer.c b/time/tst-itimer.c
index 929c2b7..bd7d7af 100644
--- a/time/tst-itimer.c
+++ b/time/tst-itimer.c
@@ -100,7 +100,7 @@ do_test (void)
/* Linux does not provide 64 bit time_t support for getitimer and
setitimer on architectures with 32 bit time_t support. */
- if (sizeof (__time_t) == 8)
+ if (__KERNEL_OLD_TIMEVAL_MATCHES_TIMEVAL64)
{
TEST_COMPARE (setitimer (timers[i], &it, NULL), 0);
TEST_COMPARE (setitimer (timers[i], &(struct itimerval) { 0 },
@@ -131,7 +131,7 @@ do_test (void)
it.it_interval.tv_usec = 20;
it.it_value.tv_sec = 30;
it.it_value.tv_usec = 40;
- if (sizeof (__time_t) == 8)
+ if (__KERNEL_OLD_TIMEVAL_MATCHES_TIMEVAL64)
{
TEST_COMPARE (setitimer (timers[i], &it, NULL), 0);
--
1.8.3.1

267
x86-64-Optimize-load-of-all-bits-set-into-ZMM-regist.patch
View File

@ -1,267 +0,0 @@
From 78c9ec9000f873abe7a15a91b87080a2e4308260 Mon Sep 17 00:00:00 2001
From: "H.J. Lu" <hjl.tools@gmail.com>
Date: Fri, 20 Aug 2021 06:42:24 -0700
Subject: [PATCH] x86-64: Optimize load of all bits set into ZMM register [BZ
#28252]
Optimize loads of all bits set into ZMM register in AVX512 SVML codes
by replacing
vpbroadcastq .L_2il0floatpacket.16(%rip), %zmmX
and
vmovups .L_2il0floatpacket.13(%rip), %zmmX
with
vpternlogd $0xff, %zmmX, %zmmX, %zmmX
This fixes BZ #28252.
---
sysdeps/x86_64/fpu/multiarch/svml_d_cos8_core_avx512.S | 7 +------
sysdeps/x86_64/fpu/multiarch/svml_d_log8_core_avx512.S | 7 +------
sysdeps/x86_64/fpu/multiarch/svml_d_sin8_core_avx512.S | 7 +------
sysdeps/x86_64/fpu/multiarch/svml_d_sincos8_core_avx512.S | 7 +------
sysdeps/x86_64/fpu/multiarch/svml_s_cosf16_core_avx512.S | 7 +------
sysdeps/x86_64/fpu/multiarch/svml_s_expf16_core_avx512.S | 7 +------
sysdeps/x86_64/fpu/multiarch/svml_s_logf16_core_avx512.S | 7 +------
sysdeps/x86_64/fpu/multiarch/svml_s_powf16_core_avx512.S | 12 ++----------
sysdeps/x86_64/fpu/multiarch/svml_s_sincosf16_core_avx512.S | 7 +------
sysdeps/x86_64/fpu/multiarch/svml_s_sinf16_core_avx512.S | 7 +------
10 files changed, 11 insertions(+), 64 deletions(-)
diff --git a/sysdeps/x86_64/fpu/multiarch/svml_d_cos8_core_avx512.S b/sysdeps/x86_64/fpu/multiarch/svml_d_cos8_core_avx512.S
index e68fcdb..58e588a 100644
--- a/sysdeps/x86_64/fpu/multiarch/svml_d_cos8_core_avx512.S
+++ b/sysdeps/x86_64/fpu/multiarch/svml_d_cos8_core_avx512.S
@@ -265,7 +265,7 @@ WRAPPER_IMPL_AVX512 _ZGVdN4v_cos
vmovaps %zmm0, %zmm8
/* Check for large arguments path */
- vpbroadcastq .L_2il0floatpacket.16(%rip), %zmm2
+ vpternlogd $0xff, %zmm2, %zmm2, %zmm2
/*
ARGUMENT RANGE REDUCTION:
@@ -456,8 +456,3 @@ WRAPPER_IMPL_AVX512 _ZGVdN4v_cos
jmp .LBL_2_7
#endif
END (_ZGVeN8v_cos_skx)
-
- .section .rodata, "a"
-.L_2il0floatpacket.16:
- .long 0xffffffff,0xffffffff
- .type .L_2il0floatpacket.16,@object
diff --git a/sysdeps/x86_64/fpu/multiarch/svml_d_log8_core_avx512.S b/sysdeps/x86_64/fpu/multiarch/svml_d_log8_core_avx512.S
index dfa2aca..f5f117d 100644
--- a/sysdeps/x86_64/fpu/multiarch/svml_d_log8_core_avx512.S
+++ b/sysdeps/x86_64/fpu/multiarch/svml_d_log8_core_avx512.S
@@ -274,7 +274,7 @@ WRAPPER_IMPL_AVX512 _ZGVdN4v_log
/* preserve mantissa, set input exponent to 2^(-10) */
vpternlogq $248, _ExpMask(%rax), %zmm3, %zmm2
- vpbroadcastq .L_2il0floatpacket.12(%rip), %zmm1
+ vpternlogd $0xff, %zmm1, %zmm1, %zmm1
vpsrlq $32, %zmm4, %zmm6
/* reciprocal approximation good to at least 11 bits */
@@ -461,8 +461,3 @@ WRAPPER_IMPL_AVX512 _ZGVdN4v_log
jmp .LBL_2_7
#endif
END (_ZGVeN8v_log_skx)
-
- .section .rodata, "a"
-.L_2il0floatpacket.12:
- .long 0xffffffff,0xffffffff
- .type .L_2il0floatpacket.12,@object
diff --git a/sysdeps/x86_64/fpu/multiarch/svml_d_sin8_core_avx512.S b/sysdeps/x86_64/fpu/multiarch/svml_d_sin8_core_avx512.S
index be8ab7c..48d251d 100644
--- a/sysdeps/x86_64/fpu/multiarch/svml_d_sin8_core_avx512.S
+++ b/sysdeps/x86_64/fpu/multiarch/svml_d_sin8_core_avx512.S
@@ -261,7 +261,7 @@ WRAPPER_IMPL_AVX512 _ZGVdN4v_sin
andq $-64, %rsp
subq $1280, %rsp
movq __svml_d_trig_data@GOTPCREL(%rip), %rax
- vpbroadcastq .L_2il0floatpacket.14(%rip), %zmm14
+ vpternlogd $0xff, %zmm1, %zmm1, %zmm14
vmovups __dAbsMask(%rax), %zmm7
vmovups __dInvPI(%rax), %zmm2
vmovups __dRShifter(%rax), %zmm1
@@ -458,8 +458,3 @@ WRAPPER_IMPL_AVX512 _ZGVdN4v_sin
jmp .LBL_2_7
#endif
END (_ZGVeN8v_sin_skx)
-
- .section .rodata, "a"
-.L_2il0floatpacket.14:
- .long 0xffffffff,0xffffffff
- .type .L_2il0floatpacket.14,@object
diff --git a/sysdeps/x86_64/fpu/multiarch/svml_d_sincos8_core_avx512.S b/sysdeps/x86_64/fpu/multiarch/svml_d_sincos8_core_avx512.S
index 6118870..a4944a4 100644
--- a/sysdeps/x86_64/fpu/multiarch/svml_d_sincos8_core_avx512.S
+++ b/sysdeps/x86_64/fpu/multiarch/svml_d_sincos8_core_avx512.S
@@ -430,7 +430,7 @@ WRAPPER_IMPL_AVX512_fFF _ZGVdN4vl8l8_sincos
/* SinPoly = SinR*SinPoly */
vfmadd213pd %zmm5, %zmm5, %zmm4
- vpbroadcastq .L_2il0floatpacket.15(%rip), %zmm3
+ vpternlogd $0xff, %zmm3, %zmm3, %zmm3
/* Update Cos result's sign */
vxorpd %zmm2, %zmm1, %zmm1
@@ -741,8 +741,3 @@ END (_ZGVeN8vvv_sincos_knl)
ENTRY (_ZGVeN8vvv_sincos_skx)
WRAPPER_AVX512_vvv_vl8l8 _ZGVeN8vl8l8_sincos_skx
END (_ZGVeN8vvv_sincos_skx)
-
- .section .rodata, "a"
-.L_2il0floatpacket.15:
- .long 0xffffffff,0xffffffff
- .type .L_2il0floatpacket.15,@object
diff --git a/sysdeps/x86_64/fpu/multiarch/svml_s_cosf16_core_avx512.S b/sysdeps/x86_64/fpu/multiarch/svml_s_cosf16_core_avx512.S
index f671d60..fe8474f 100644
--- a/sysdeps/x86_64/fpu/multiarch/svml_s_cosf16_core_avx512.S
+++ b/sysdeps/x86_64/fpu/multiarch/svml_s_cosf16_core_avx512.S
@@ -278,7 +278,7 @@ WRAPPER_IMPL_AVX512 _ZGVdN8v_cosf
X = X - Y*PI1 - Y*PI2 - Y*PI3
*/
vmovaps %zmm0, %zmm6
- vmovups .L_2il0floatpacket.13(%rip), %zmm12
+ vpternlogd $0xff, %zmm12, %zmm12, %zmm12
vmovups __sRShifter(%rax), %zmm3
vmovups __sPI1_FMA(%rax), %zmm5
vmovups __sA9_FMA(%rax), %zmm9
@@ -453,8 +453,3 @@ WRAPPER_IMPL_AVX512 _ZGVdN8v_cosf
jmp .LBL_2_7
#endif
END (_ZGVeN16v_cosf_skx)
-
- .section .rodata, "a"
-.L_2il0floatpacket.13:
- .long 0xffffffff,0xffffffff,0xffffffff,0xffffffff,0xffffffff,0xffffffff,0xffffffff,0xffffffff,0xffffffff,0xffffffff,0xffffffff,0xffffffff,0xffffffff,0xffffffff,0xffffffff,0xffffffff
- .type .L_2il0floatpacket.13,@object
diff --git a/sysdeps/x86_64/fpu/multiarch/svml_s_expf16_core_avx512.S b/sysdeps/x86_64/fpu/multiarch/svml_s_expf16_core_avx512.S
index 637bfe3..229b782 100644
--- a/sysdeps/x86_64/fpu/multiarch/svml_s_expf16_core_avx512.S
+++ b/sysdeps/x86_64/fpu/multiarch/svml_s_expf16_core_avx512.S
@@ -264,7 +264,7 @@ WRAPPER_IMPL_AVX512 _ZGVdN8v_expf
vmovaps %zmm0, %zmm7
/* compare against threshold */
- vmovups .L_2il0floatpacket.13(%rip), %zmm3
+ vpternlogd $0xff, %zmm3, %zmm3, %zmm3
vmovups __sInvLn2(%rax), %zmm4
vmovups __sShifter(%rax), %zmm1
vmovups __sLn2hi(%rax), %zmm6
@@ -440,8 +440,3 @@ WRAPPER_IMPL_AVX512 _ZGVdN8v_expf
#endif
END (_ZGVeN16v_expf_skx)
-
- .section .rodata, "a"
-.L_2il0floatpacket.13:
- .long 0xffffffff,0xffffffff,0xffffffff,0xffffffff,0xffffffff,0xffffffff,0xffffffff,0xffffffff,0xffffffff,0xffffffff,0xffffffff,0xffffffff,0xffffffff,0xffffffff,0xffffffff,0xffffffff
- .type .L_2il0floatpacket.13,@object
diff --git a/sysdeps/x86_64/fpu/multiarch/svml_s_logf16_core_avx512.S b/sysdeps/x86_64/fpu/multiarch/svml_s_logf16_core_avx512.S
index 9d790fb..fa2aae9 100644
--- a/sysdeps/x86_64/fpu/multiarch/svml_s_logf16_core_avx512.S
+++ b/sysdeps/x86_64/fpu/multiarch/svml_s_logf16_core_avx512.S
@@ -235,7 +235,7 @@ WRAPPER_IMPL_AVX512 _ZGVdN8v_logf
andq $-64, %rsp
subq $1280, %rsp
movq __svml_slog_data@GOTPCREL(%rip), %rax
- vmovups .L_2il0floatpacket.7(%rip), %zmm6
+ vpternlogd $0xff, %zmm6, %zmm6, %zmm6
vmovups _iBrkValue(%rax), %zmm4
vmovups _sPoly_7(%rax), %zmm8
@@ -409,8 +409,3 @@ WRAPPER_IMPL_AVX512 _ZGVdN8v_logf
#endif
END (_ZGVeN16v_logf_skx)
-
- .section .rodata, "a"
-.L_2il0floatpacket.7:
- .long 0xffffffff,0xffffffff,0xffffffff,0xffffffff,0xffffffff,0xffffffff,0xffffffff,0xffffffff,0xffffffff,0xffffffff,0xffffffff,0xffffffff,0xffffffff,0xffffffff,0xffffffff,0xffffffff
- .type .L_2il0floatpacket.7,@object
diff --git a/sysdeps/x86_64/fpu/multiarch/svml_s_powf16_core_avx512.S b/sysdeps/x86_64/fpu/multiarch/svml_s_powf16_core_avx512.S
index c5c43c4..6aea2a4 100644
--- a/sysdeps/x86_64/fpu/multiarch/svml_s_powf16_core_avx512.S
+++ b/sysdeps/x86_64/fpu/multiarch/svml_s_powf16_core_avx512.S
@@ -385,7 +385,7 @@ WRAPPER_IMPL_AVX512_ff _ZGVdN8vv_powf
vpsrlq $32, %zmm3, %zmm2
vpmovqd %zmm2, %ymm11
vcvtps2pd %ymm14, %zmm13
- vmovups .L_2il0floatpacket.23(%rip), %zmm14
+ vpternlogd $0xff, %zmm14, %zmm14, %zmm14
vmovaps %zmm14, %zmm26
vpandd _ABSMASK(%rax), %zmm1, %zmm8
vpcmpd $1, _INF(%rax), %zmm8, %k2
@@ -427,7 +427,7 @@ WRAPPER_IMPL_AVX512_ff _ZGVdN8vv_powf
vpmovqd %zmm11, %ymm5
vpxord %zmm10, %zmm10, %zmm10
vgatherdpd _Log2Rcp_lookup(%rax,%ymm4), %zmm10{%k3}
- vpbroadcastq .L_2il0floatpacket.24(%rip), %zmm4
+ vpternlogd $0xff, %zmm4, %zmm4, %zmm4
vpxord %zmm11, %zmm11, %zmm11
vcvtdq2pd %ymm7, %zmm7
vgatherdpd _Log2Rcp_lookup(%rax,%ymm5), %zmm11{%k1}
@@ -643,11 +643,3 @@ WRAPPER_IMPL_AVX512_ff _ZGVdN8vv_powf
jmp .LBL_2_7
#endif
END (_ZGVeN16vv_powf_skx)
-
- .section .rodata, "a"
-.L_2il0floatpacket.23:
- .long 0xffffffff,0xffffffff,0xffffffff,0xffffffff,0xffffffff,0xffffffff,0xffffffff,0xffffffff,0xffffffff,0xffffffff,0xffffffff,0xffffffff,0xffffffff,0xffffffff,0xffffffff,0xffffffff
- .type .L_2il0floatpacket.23,@object
-.L_2il0floatpacket.24:
- .long 0xffffffff,0xffffffff
- .type .L_2il0floatpacket.24,@object
diff --git a/sysdeps/x86_64/fpu/multiarch/svml_s_sincosf16_core_avx512.S b/sysdeps/x86_64/fpu/multiarch/svml_s_sincosf16_core_avx512.S
index 9cf359c..a446c50 100644
--- a/sysdeps/x86_64/fpu/multiarch/svml_s_sincosf16_core_avx512.S
+++ b/sysdeps/x86_64/fpu/multiarch/svml_s_sincosf16_core_avx512.S
@@ -317,7 +317,7 @@ WRAPPER_IMPL_AVX512_fFF _ZGVdN8vvv_sincosf
/* Result sign calculations */
vpternlogd $150, %zmm0, %zmm14, %zmm1
- vmovups .L_2il0floatpacket.13(%rip), %zmm14
+ vpternlogd $0xff, %zmm14, %zmm14, %zmm14
/* Add correction term 0.5 for cos() part */
vaddps %zmm8, %zmm5, %zmm15
@@ -748,8 +748,3 @@ END (_ZGVeN16vvv_sincosf_knl)
ENTRY (_ZGVeN16vvv_sincosf_skx)
WRAPPER_AVX512_vvv_vl4l4 _ZGVeN16vl4l4_sincosf_skx
END (_ZGVeN16vvv_sincosf_skx)
-
- .section .rodata, "a"
-.L_2il0floatpacket.13:
- .long 0xffffffff,0xffffffff,0xffffffff,0xffffffff,0xffffffff,0xffffffff,0xffffffff,0xffffffff,0xffffffff,0xffffffff,0xffffffff,0xffffffff,0xffffffff,0xffffffff,0xffffffff,0xffffffff
- .type .L_2il0floatpacket.13,@object
diff --git a/sysdeps/x86_64/fpu/multiarch/svml_s_sinf16_core_avx512.S b/sysdeps/x86_64/fpu/multiarch/svml_s_sinf16_core_avx512.S
index bd05109..c1b352d 100644
--- a/sysdeps/x86_64/fpu/multiarch/svml_s_sinf16_core_avx512.S
+++ b/sysdeps/x86_64/fpu/multiarch/svml_s_sinf16_core_avx512.S
@@ -280,7 +280,7 @@ WRAPPER_IMPL_AVX512 _ZGVdN8v_sinf
movq __svml_s_trig_data@GOTPCREL(%rip), %rax
/* Check for large and special values */
- vmovups .L_2il0floatpacket.11(%rip), %zmm14
+ vpternlogd $0xff, %zmm14, %zmm14, %zmm14
vmovups __sAbsMask(%rax), %zmm5
vmovups __sInvPI(%rax), %zmm1
vmovups __sRShifter(%rax), %zmm2
@@ -472,8 +472,3 @@ WRAPPER_IMPL_AVX512 _ZGVdN8v_sinf
jmp .LBL_2_7
#endif
END (_ZGVeN16v_sinf_skx)
-
- .section .rodata, "a"
-.L_2il0floatpacket.11:
- .long 0xffffffff,0xffffffff,0xffffffff,0xffffffff,0xffffffff,0xffffffff,0xffffffff,0xffffffff,0xffffffff,0xffffffff,0xffffffff,0xffffffff,0xffffffff,0xffffffff,0xffffffff,0xffffffff
- .type .L_2il0floatpacket.11,@object
--
1.8.3.1

38
x86-64-Use-testl-to-check-__x86_string_control.patch
View File

@ -1,38 +0,0 @@
From 3c8b9879cab6d41787bc5b14c1748f62fd6d0e5f Mon Sep 17 00:00:00 2001
From: "H.J. Lu" <hjl.tools@gmail.com>
Date: Sat, 28 Aug 2021 06:10:38 -0700
Subject: [PATCH] x86-64: Use testl to check __x86_string_control
Use testl, instead of andl, to check __x86_string_control to avoid
updating __x86_string_control.
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
---
sysdeps/x86_64/multiarch/memmove-vec-unaligned-erms.S | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/sysdeps/x86_64/multiarch/memmove-vec-unaligned-erms.S b/sysdeps/x86_64/multiarch/memmove-vec-unaligned-erms.S
index 9f02624..abde843 100644
--- a/sysdeps/x86_64/multiarch/memmove-vec-unaligned-erms.S
+++ b/sysdeps/x86_64/multiarch/memmove-vec-unaligned-erms.S
@@ -325,7 +325,7 @@ L(movsb):
/* Avoid slow backward REP MOVSB. */
jb L(more_8x_vec_backward)
# if AVOID_SHORT_DISTANCE_REP_MOVSB
- andl $X86_STRING_CONTROL_AVOID_SHORT_DISTANCE_REP_MOVSB, __x86_string_control(%rip)
+ testl $X86_STRING_CONTROL_AVOID_SHORT_DISTANCE_REP_MOVSB, __x86_string_control(%rip)
jz 3f
movq %rdi, %rcx
subq %rsi, %rcx
@@ -333,7 +333,7 @@ L(movsb):
# endif
1:
# if AVOID_SHORT_DISTANCE_REP_MOVSB
- andl $X86_STRING_CONTROL_AVOID_SHORT_DISTANCE_REP_MOVSB, __x86_string_control(%rip)
+ testl $X86_STRING_CONTROL_AVOID_SHORT_DISTANCE_REP_MOVSB, __x86_string_control(%rip)
jz 3f
movq %rsi, %rcx
subq %rdi, %rcx
--
1.8.3.1

178
x86-fix-Autoconf-caching-of-instruction-support-chec.patch
View File

@ -1,178 +0,0 @@
From 0835c0f0bad351117154b815f34f8af19ea7e325 Mon Sep 17 00:00:00 2001
From: Matt Whitlock <sourceware@mattwhitlock.name>
Date: Wed, 16 Jun 2021 23:40:47 -0400
Subject: [PATCH] x86: fix Autoconf caching of instruction support checks [BZ
#27991]
The Autoconf documentation for the AC_CACHE_CHECK macro states:
The commands-to-set-it must have no side effects except for setting
the variable cache-id, see below.
However, the tests for support of -msahf and -mmovbe were embedded in
the commands-to-set-it for lib_cv_include_x86_isa_level. This had the
consequence that libc_cv_have_x86_lahf_sahf and libc_cv_have_x86_movbe
were not defined whenever lib_cv_include_x86_isa_level was read from
cache. These variables' being undefined meant that their unquoted use
in later test expressions led to the 'test' built-in's misparsing its
arguments and emitting errors like "test: =: unexpected operator" or
"test: =: unary operator expected", depending on the particular shell.
This commit refactors the tests for LAHF/SAHF and MOVBE instruction
support into their own AC_CACHE_CHECK macro invocations to obey the
rule that the commands-to-set-it must have no side effects other than
setting the variable named by cache-id.
Signed-off-by: Matt Whitlock <sourceware@mattwhitlock.name>
Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
---
sysdeps/x86/configure | 56 ++++++++++++++++++++++++++++++------------------
sysdeps/x86/configure.ac | 34 +++++++++++++++--------------
2 files changed, 53 insertions(+), 37 deletions(-)
diff --git a/sysdeps/x86/configure b/sysdeps/x86/configure
index ead1295..62676bb 100644
--- a/sysdeps/x86/configure
+++ b/sysdeps/x86/configure
@@ -126,8 +126,6 @@ cat > conftest2.S <<EOF
4:
EOF
libc_cv_include_x86_isa_level=no
-libc_cv_have_x86_lahf_sahf=no
-libc_cv_have_x86_movbe=no
if { ac_try='${CC-cc} $CFLAGS $CPPFLAGS -nostartfiles -nostdlib -r -o conftest conftest1.S conftest2.S'
{ { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5
(eval $ac_try) 2>&5
@@ -137,9 +135,22 @@ if { ac_try='${CC-cc} $CFLAGS $CPPFLAGS -nostartfiles -nostdlib -r -o conftest c
count=`LC_ALL=C $READELF -n conftest | grep NT_GNU_PROPERTY_TYPE_0 | wc -l`
if test "$count" = 1; then
libc_cv_include_x86_isa_level=yes
- cat > conftest.c <<EOF
-EOF
- if { ac_try='${CC-cc} $CFLAGS $CPPFLAGS -fverbose-asm -S -o - conftest.c'
+ fi
+fi
+rm -f conftest*
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_include_x86_isa_level" >&5
+$as_echo "$libc_cv_include_x86_isa_level" >&6; }
+if test $libc_cv_include_x86_isa_level = yes; then
+ $as_echo "#define INCLUDE_X86_ISA_LEVEL 1" >>confdefs.h
+
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking for LAHF/SAHF instruction support" >&5
+$as_echo_n "checking for LAHF/SAHF instruction support... " >&6; }
+if ${libc_cv_have_x86_lahf_sahf+:} false; then :
+ $as_echo_n "(cached) " >&6
+else
+ libc_cv_have_x86_lahf_sahf=no
+ if { ac_try='${CC-cc} $CFLAGS $CPPFLAGS -fverbose-asm -S -o - -x c /dev/null'
{ { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5
(eval $ac_try) 2>&5
ac_status=$?
@@ -147,7 +158,20 @@ EOF
test $ac_status = 0; }; } | grep -q "\-msahf"; then
libc_cv_have_x86_lahf_sahf=yes
fi
- if { ac_try='${CC-cc} $CFLAGS $CPPFLAGS -fverbose-asm -S -o - conftest.c'
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_have_x86_lahf_sahf" >&5
+$as_echo "$libc_cv_have_x86_lahf_sahf" >&6; }
+ if test $libc_cv_have_x86_lahf_sahf = yes; then
+ $as_echo "#define HAVE_X86_LAHF_SAHF 1" >>confdefs.h
+
+ fi
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking for MOVBE instruction support" >&5
+$as_echo_n "checking for MOVBE instruction support... " >&6; }
+if ${libc_cv_have_x86_movbe+:} false; then :
+ $as_echo_n "(cached) " >&6
+else
+ libc_cv_have_x86_movbe=no
+ if { ac_try='${CC-cc} $CFLAGS $CPPFLAGS -fverbose-asm -S -o - -x c /dev/null'
{ { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5
(eval $ac_try) 2>&5
ac_status=$?
@@ -155,23 +179,13 @@ EOF
test $ac_status = 0; }; } | grep -q "\-mmovbe"; then
libc_cv_have_x86_movbe=yes
fi
- fi
-fi
-rm -f conftest*
-fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_include_x86_isa_level" >&5
-$as_echo "$libc_cv_include_x86_isa_level" >&6; }
-if test $libc_cv_include_x86_isa_level = yes; then
- $as_echo "#define INCLUDE_X86_ISA_LEVEL 1" >>confdefs.h
-
fi
-if test $libc_cv_have_x86_lahf_sahf = yes; then
- $as_echo "#define HAVE_X86_LAHF_SAHF 1" >>confdefs.h
-
-fi
-if test $libc_cv_have_x86_movbe = yes; then
- $as_echo "#define HAVE_X86_MOVBE 1" >>confdefs.h
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_have_x86_movbe" >&5
+$as_echo "$libc_cv_have_x86_movbe" >&6; }
+ if test $libc_cv_have_x86_movbe = yes; then
+ $as_echo "#define HAVE_X86_MOVBE 1" >>confdefs.h
+ fi
fi
config_vars="$config_vars
enable-x86-isa-level = $libc_cv_include_x86_isa_level"
diff --git a/sysdeps/x86/configure.ac b/sysdeps/x86/configure.ac
index bca97fd..04a12ab 100644
--- a/sysdeps/x86/configure.ac
+++ b/sysdeps/x86/configure.ac
@@ -98,30 +98,32 @@ cat > conftest2.S <<EOF
4:
EOF
libc_cv_include_x86_isa_level=no
-libc_cv_have_x86_lahf_sahf=no
-libc_cv_have_x86_movbe=no
if AC_TRY_COMMAND(${CC-cc} $CFLAGS $CPPFLAGS -nostartfiles -nostdlib -r -o conftest conftest1.S conftest2.S); then
count=`LC_ALL=C $READELF -n conftest | grep NT_GNU_PROPERTY_TYPE_0 | wc -l`
if test "$count" = 1; then
libc_cv_include_x86_isa_level=yes
- cat > conftest.c <<EOF
-EOF
- if AC_TRY_COMMAND(${CC-cc} $CFLAGS $CPPFLAGS -fverbose-asm -S -o - conftest.c) | grep -q "\-msahf"; then
- libc_cv_have_x86_lahf_sahf=yes
- fi
- if AC_TRY_COMMAND(${CC-cc} $CFLAGS $CPPFLAGS -fverbose-asm -S -o - conftest.c) | grep -q "\-mmovbe"; then
- libc_cv_have_x86_movbe=yes
- fi
fi
fi
rm -f conftest*])
if test $libc_cv_include_x86_isa_level = yes; then
AC_DEFINE(INCLUDE_X86_ISA_LEVEL)
-fi
-if test $libc_cv_have_x86_lahf_sahf = yes; then
- AC_DEFINE(HAVE_X86_LAHF_SAHF)
-fi
-if test $libc_cv_have_x86_movbe = yes; then
- AC_DEFINE(HAVE_X86_MOVBE)
+ AC_CACHE_CHECK([for LAHF/SAHF instruction support],
+ libc_cv_have_x86_lahf_sahf, [dnl
+ libc_cv_have_x86_lahf_sahf=no
+ if AC_TRY_COMMAND(${CC-cc} $CFLAGS $CPPFLAGS -fverbose-asm -S -o - -x c /dev/null) | grep -q "\-msahf"; then
+ libc_cv_have_x86_lahf_sahf=yes
+ fi])
+ if test $libc_cv_have_x86_lahf_sahf = yes; then
+ AC_DEFINE(HAVE_X86_LAHF_SAHF)
+ fi
+ AC_CACHE_CHECK([for MOVBE instruction support],
+ libc_cv_have_x86_movbe, [dnl
+ libc_cv_have_x86_movbe=no
+ if AC_TRY_COMMAND(${CC-cc} $CFLAGS $CPPFLAGS -fverbose-asm -S -o - -x c /dev/null) | grep -q "\-mmovbe"; then
+ libc_cv_have_x86_movbe=yes
+ fi])
+ if test $libc_cv_have_x86_movbe = yes; then
+ AC_DEFINE(HAVE_X86_MOVBE)
+ fi
fi
LIBC_CONFIG_VAR([enable-x86-isa-level], [$libc_cv_include_x86_isa_level])
--
1.8.3.1

55
x86_64-Simplify-elf_machine_-load_address-dynamic.patch
View File

@ -1,55 +0,0 @@
From b37b75d269883a2c553bb7019a813094eb4e2dd1 Mon Sep 17 00:00:00 2001
From: Fangrui Song <maskray@google.com>
Date: Tue, 17 Aug 2021 10:45:57 -0700
Subject: [PATCH] x86_64: Simplify elf_machine_{load_address,dynamic}
and drop reliance on _GLOBAL_OFFSET_TABLE_[0] being the link-time
address of _DYNAMIC. &__ehdr_start is a better way to get the load address.
Reviewed-by: H.J. Lu <hjl.tools@gmail.com>
---
sysdeps/x86_64/dl-machine.h | 21 +++++++--------------
1 file changed, 7 insertions(+), 14 deletions(-)
diff --git a/sysdeps/x86_64/dl-machine.h b/sysdeps/x86_64/dl-machine.h
index a8596aa..ceee507 100644
--- a/sysdeps/x86_64/dl-machine.h
+++ b/sysdeps/x86_64/dl-machine.h
@@ -35,27 +35,20 @@ elf_machine_matches_host (const ElfW(Ehdr) *ehdr)
}
-/* Return the link-time address of _DYNAMIC. Conveniently, this is the
- first element of the GOT. This must be inlined in a function which
- uses global data. */
+/* Return the run-time load address of the shared object. */
static inline ElfW(Addr) __attribute__ ((unused))
-elf_machine_dynamic (void)
+elf_machine_load_address (void)
{
- /* This produces an IP-relative reloc which is resolved at link time. */
- extern const ElfW(Addr) _GLOBAL_OFFSET_TABLE_[] attribute_hidden;
- return _GLOBAL_OFFSET_TABLE_[0];
+ extern const ElfW(Ehdr) __ehdr_start attribute_hidden;
+ return (ElfW(Addr)) &__ehdr_start;
}
-
-/* Return the run-time load address of the shared object. */
+/* Return the link-time address of _DYNAMIC. */
static inline ElfW(Addr) __attribute__ ((unused))
-elf_machine_load_address (void)
+elf_machine_dynamic (void)
{
- /* Compute the difference between the runtime address of _DYNAMIC as seen
- by an IP-relative reference, and the link-time address found in the
- special unrelocated first GOT entry. */
extern ElfW(Dyn) _DYNAMIC[] attribute_hidden;
- return (ElfW(Addr)) &_DYNAMIC - elf_machine_dynamic ();
+ return (ElfW(Addr)) _DYNAMIC - elf_machine_load_address ();
}
/* Set up the loaded object described by L so its unrelocated PLT
--
1.8.3.1