From 0c40c18ecd564a5c3f27f1408aaf9848fe210349 Mon Sep 17 00:00:00 2001 From: Ilya Leoshkevich Date: Tue, 3 Aug 2021 19:18:58 +0200 Subject: 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 Reviewed-by: Richard Henderson Message-Id: <20210803171858.148394-1-iii@linux.ibm.com> Signed-off-by: Laurent Vivier --- linux-user/i386/signal.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) (limited to 'linux-user/i386') 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); -- cgit v1.2.3