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- fix /proc/self/maps faking with secondary threads

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OBS-URL: https://build.opensuse.org/package/show/Virtualization/qemu?expand=0&rev=75
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Alexander Graf 2012-05-31 17:37:49 +00:00 committed by Git OBS Bridge
parent 5c20c5f34f
commit ebe835d430
3 changed files with 39 additions and 0 deletions
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32
0021-linux-user-fix-multi-threaded-proc-.patch Normal file
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@ -0,0 +1,32 @@
From 3f4da458294fda52c7595bbb1fb9ca3d50e5b887 Mon Sep 17 00:00:00 2001
From: Alexander Graf <agraf@suse.de>
Date: Wed, 30 May 2012 14:40:47 +0200
Subject: [PATCH] linux-user: fix multi-threaded /proc/self/maps
When reading our faked /proc/self/maps from a secondary thread,
we get an invalid stack entry. This is because ts->stack_base is not
initialized in non-primary threads.
However, ts->info is, and the stack layout information we're looking
for is there too. So let's use that one instead!
Signed-off-by: Alexander Graf <agraf@suse.de>
---
linux-user/syscall.c | 4 ++--
1 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/linux-user/syscall.c b/linux-user/syscall.c
index 39d02f8..06408bd 100644
--- a/linux-user/syscall.c
+++ b/linux-user/syscall.c
@@ -4920,8 +4920,8 @@ static int open_self_maps(void *cpu_env, int fd)
#if defined(TARGET_ARM) || defined(TARGET_M68K) || defined(TARGET_UNICORE32)
dprintf(fd, "%08llx-%08llx rw-p %08llx 00:00 0 [stack]\n",
(unsigned long long)ts->info->stack_limit,
- (unsigned long long)(ts->stack_base + (TARGET_PAGE_SIZE - 1))
- & TARGET_PAGE_MASK,
+ (unsigned long long)(ts->info->start_stack +
+ (TARGET_PAGE_SIZE - 1)) & TARGET_PAGE_MASK,
(unsigned long long)0);
#endif

5
qemu.changes
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@ -1,3 +1,8 @@
-------------------------------------------------------------------
Thu May 31 17:37:26 UTC 2012 - agraf@suse.com
- fix /proc/self/maps faking with secondary threads
-------------------------------------------------------------------
Wed May 30 20:19:05 CEST 2012 - agraf@suse.de

2
qemu.spec
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@ -44,6 +44,7 @@ Patch0017: 0017-linux-user-fix-segfault-deadlock.pa.patch
Patch0018: 0018-linux-user-binfmt-support-host-bina.patch
Patch0019: 0019-linux-user-ARM-Ignore-immediate-val.patch
Patch0020: 0020-linux-user-arm-no-tb_flush-on-reset.patch
Patch0021: 0021-linux-user-fix-multi-threaded-proc-.patch
# this is to make lint happy
Source300: rpmlintrc
Source400: update_git.sh
@ -134,6 +135,7 @@ run cross architectures builds
%patch0018 -p1
%patch0019 -p1
%patch0020 -p1
%patch0021 -p1
%build
# build QEMU