05fcc90d20
- hw/misc/mos6522: Fix bad class definition of the MOS6522 device - target/i386: Fix minor typo in NO_NESTED_DATA_BP feature bit - cpu: ensure we don't call start_exclusive from cpu_exec - Avoid unaligned fetch in ladr_match() - audio/audio.c: remove trailing newline in error_setg - acpi/tests/avocado/bits: wait for 200 seconds for SHUTDOWN event from bits VM - linux-user: Tolerate CONFIG_LSM_MMAP_MIN_ADDR - accel/tcg: Fix user-only probe_access_internal plugin - linux-user: Honor elf alignment when placing images - Reserve address for MSI mapping in the CVM scenario. Signed-off-by: Jiabo Feng <fengjiabo1@huawei.com> (cherry picked from commit 3ab56c27fe6b593be9a24f27b52b2730efa05304)
53 lines
2.0 KiB
Diff
53 lines
2.0 KiB
Diff
From 6d4db685ae8b4cbffab80c61c01ef56c57b67eb4 Mon Sep 17 00:00:00 2001
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From: guping <guping_yewu@cmss.chinamobile.com>
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Date: Mon, 18 Nov 2024 03:09:59 +0000
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Subject: [PATCH] linux-user: Tolerate CONFIG_LSM_MMAP_MIN_ADDR cherry-pick
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from fb7f3572b111ffb6c2dd2c7f6c5b4dc57dd8a3f5
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Running qemu-i386 on a system running with SELinux in enforcing mode
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(more precisely: s390x trixie container on Fedora 40) fails with:
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qemu-i386: tests/tcg/i386-linux-user/sigreturn-sigmask: Unable to find a guest_base to satisfy all guest address mapping requirements
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00000000-ffffffff
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The reason is that main() determines mmap_min_addr from
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/proc/sys/vm/mmap_min_addr, but SELinux additionally defines
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CONFIG_LSM_MMAP_MIN_ADDR, which is normally larger: 32K or 64K, but,
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in general, can be anything. There is no portable way to query its
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value: /boot/config, /proc/config and /proc/config.gz are distro- and
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environment-specific.
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Once the identity map fails, the magnitude of guest_base does not
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matter, so fix by starting the search from 1M or 1G.
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Cc: qemu-stable@nongnu.org
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Resolves: #2598
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Suggested-by: default avatarRichard Henderson <richard.henderson@linaro.org>
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Signed-off-by: default avatarIlya Leoshkevich <iii@linux.ibm.com>
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Message-ID: <20241023002558.34589-1-iii@linux.ibm.com>
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Signed-off-by: default avatarRichard Henderson <richard.henderson@linaro.org>
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Signed-off-by: guping <guping_yewu@cmss.chinamobile.com>
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---
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linux-user/elfload.c | 2 +-
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1 file changed, 1 insertion(+), 1 deletion(-)
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diff --git a/linux-user/elfload.c b/linux-user/elfload.c
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index cf9e74468b..0df64c6442 100644
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--- a/linux-user/elfload.c
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+++ b/linux-user/elfload.c
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@@ -2980,7 +2980,7 @@ static uintptr_t pgb_try_itree(const PGBAddrs *ga, uintptr_t base,
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static uintptr_t pgb_find_itree(const PGBAddrs *ga, IntervalTreeRoot *root,
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uintptr_t align, uintptr_t brk)
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{
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- uintptr_t last = mmap_min_addr;
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+ uintptr_t last = sizeof(uintptr_t) == 4 ? MiB : GiB;
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uintptr_t base, skip;
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while (true) {
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--
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2.41.0.windows.1
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