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[PULL 4/7] linux-user: Zero out target_siginfo_t in force_sig()
From: |
Laurent Vivier |
Subject: |
[PULL 4/7] linux-user: Zero out target_siginfo_t in force_sig() |
Date: |
Fri, 24 Sep 2021 15:56:28 +0200 |
From: Peter Maydell <peter.maydell@linaro.org>
The target_siginfo_t we populate in force_sig() will eventually
get copied onto the target's stack. Zero it out so that any extra
padding in the sifields union is consistently zero when the guest
sees it.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20210813131809.28655-5-peter.maydell@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
---
linux-user/signal.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/linux-user/signal.c b/linux-user/signal.c
index f8346f5ec5fd..910b9dc6f7d1 100644
--- a/linux-user/signal.c
+++ b/linux-user/signal.c
@@ -641,7 +641,7 @@ void force_sig(int sig)
{
CPUState *cpu = thread_cpu;
CPUArchState *env = cpu->env_ptr;
- target_siginfo_t info;
+ target_siginfo_t info = {};
info.si_signo = sig;
info.si_errno = 0;
--
2.31.1
- [PULL 0/7] Linux user for 6.2 patches, Laurent Vivier, 2021/09/24
- [PULL 1/7] linux-user/aarch64: Set siginfo_t addr field for SIGTRAP signals, Laurent Vivier, 2021/09/24
- [PULL 3/7] linux-user/arm: Use force_sig() to deliver fpa11 emulation SIGFPE, Laurent Vivier, 2021/09/24
- [PULL 4/7] linux-user: Zero out target_siginfo_t in force_sig(),
Laurent Vivier <=
- [PULL 2/7] linux-user/arm: Set siginfo_t addr field for SIGTRAP signals, Laurent Vivier, 2021/09/24
- [PULL 5/7] linux-user: Provide new force_sig_fault() function, Laurent Vivier, 2021/09/24
- [PULL 7/7] linux-user/aarch64: Use force_sig_fault(), Laurent Vivier, 2021/09/24
- [PULL 6/7] linux-user/arm: Use force_sig_fault(), Laurent Vivier, 2021/09/24
- Re: [PULL 0/7] Linux user for 6.2 patches, Peter Maydell, 2021/09/24