47 lines
1.3 KiB
Diff
47 lines
1.3 KiB
Diff
From ffb69e2384538a7d4b634bdc491d7da9b7220f57 Mon Sep 17 00:00:00 2001
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From: chenziyang <chenziyang4@huawei.com>
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Date: Tue, 11 Jul 2023 10:19:22 +0800
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Subject: [PATCH] avoid calling printf because OE glibc-2.34 used
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-mno-outline-atomics buildflag, it will cause printf to be non-atomic
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operations on ARMv8.1 platform. This will cause printf to stuck into dead
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loop because ptrace sing-step execution cause race condition during printf
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instructions.
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---
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tests/mapper.c | 11 ++++++++++-
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1 file changed, 10 insertions(+), 1 deletion(-)
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diff --git a/tests/mapper.c b/tests/mapper.c
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index b47ae78..fcfb080 100644
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--- a/tests/mapper.c
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+++ b/tests/mapper.c
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@@ -43,6 +43,15 @@ WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
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# define MAP_NORESERVE 0
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#endif
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+void __attribute__((noinline)) push_some_stacks(int n)
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+{
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+ if (n >= 1)
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+ {
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+ push_some_stacks(n - 1);
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+ push_some_stacks(n - 1);
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+ }
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+}
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+
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int
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main (void)
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{
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@@ -71,7 +80,7 @@ main (void)
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printf ("Turning on single-stepping...\n");
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kill (getpid (), SIGUSR1); /* tell test-ptrace to start single-stepping */
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- printf ("Va bene?\n");
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+ push_some_stacks (4);
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kill (getpid (), SIGUSR2); /* tell test-ptrace to stop single-stepping */
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printf ("Turned single-stepping off...\n");
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return 0;
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--
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2.33.0
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