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| author | Ilya Leoshkevich <iii@linux.ibm.com> | 2021-08-03 19:18:58 +0200 |
|---|---|---|
| committer | Laurent Vivier <laurent@vivier.eu> | 2021-08-05 12:15:44 +0200 |
| commit | 0c40c18ecd564a5c3f27f1408aaf9848fe210349 (patch) | |
| tree | f398fd241f65cd62090df8c1b58ffb6632c3d4fe /linux-user/i386/signal.c | |
| parent | bccabb3a5d60182645c7749e89f21a9ff307a9eb (diff) | |
| download | qemu-0c40c18ecd564a5c3f27f1408aaf9848fe210349.zip | |
linux-user: fix guest/host address mixup in i386 setup_rt_frame()
setup_rt_frame() passes siginfo and ucontext host addresses to guest
signal handlers, causing problems when e.g. emulating x86_64 on s390x.
Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20210803171858.148394-1-iii@linux.ibm.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Diffstat (limited to 'linux-user/i386/signal.c')
| -rw-r--r-- | linux-user/i386/signal.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/linux-user/i386/signal.c b/linux-user/i386/signal.c index 8701774e37..841cd19651 100644 --- a/linux-user/i386/signal.c +++ b/linux-user/i386/signal.c @@ -436,13 +436,13 @@ void setup_rt_frame(int sig, struct target_sigaction *ka, #ifndef TARGET_X86_64 env->regs[R_EAX] = sig; - env->regs[R_EDX] = (unsigned long)&frame->info; - env->regs[R_ECX] = (unsigned long)&frame->uc; + env->regs[R_EDX] = frame_addr + offsetof(struct rt_sigframe, info); + env->regs[R_ECX] = frame_addr + offsetof(struct rt_sigframe, uc); #else env->regs[R_EAX] = 0; env->regs[R_EDI] = sig; - env->regs[R_ESI] = (unsigned long)&frame->info; - env->regs[R_EDX] = (unsigned long)&frame->uc; + env->regs[R_ESI] = frame_addr + offsetof(struct rt_sigframe, info); + env->regs[R_EDX] = frame_addr + offsetof(struct rt_sigframe, uc); #endif cpu_x86_load_seg(env, R_DS, __USER_DS); |