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-rw-r--r--linux-user/strace.c4
-rw-r--r--linux-user/syscall.c19
2 files changed, 14 insertions, 9 deletions
diff --git a/linux-user/strace.c b/linux-user/strace.c
index 37bc96df9b..86c081c83f 100644
--- a/linux-user/strace.c
+++ b/linux-user/strace.c
@@ -3383,10 +3383,10 @@ print_pidfd_send_signal(CPUArchState *cpu_env, const struct syscallname *name,
unlock_user(p, arg2, 0);
} else {
- print_pointer(arg2, 1);
+ print_pointer(arg2, 0);
}
- print_raw_param("%u", arg3, 0);
+ print_raw_param("%u", arg3, 1);
print_syscall_epilogue(name);
}
#endif
diff --git a/linux-user/syscall.c b/linux-user/syscall.c
index 8b2d39fe73..ad06ec7bd5 100644
--- a/linux-user/syscall.c
+++ b/linux-user/syscall.c
@@ -8679,16 +8679,21 @@ static abi_long do_syscall1(CPUArchState *cpu_env, int num, abi_long arg1,
#if defined(__NR_pidfd_send_signal) && defined(TARGET_NR_pidfd_send_signal)
case TARGET_NR_pidfd_send_signal:
{
- siginfo_t uinfo;
+ siginfo_t uinfo, *puinfo;
- p = lock_user(VERIFY_READ, arg3, sizeof(target_siginfo_t), 1);
- if (!p) {
- return -TARGET_EFAULT;
+ if (arg3) {
+ p = lock_user(VERIFY_READ, arg3, sizeof(target_siginfo_t), 1);
+ if (!p) {
+ return -TARGET_EFAULT;
+ }
+ target_to_host_siginfo(&uinfo, p);
+ unlock_user(p, arg3, 0);
+ puinfo = &uinfo;
+ } else {
+ puinfo = NULL;
}
- target_to_host_siginfo(&uinfo, p);
- unlock_user(p, arg3, 0);
ret = get_errno(pidfd_send_signal(arg1, target_to_host_signal(arg2),
- &uinfo, arg4));
+ puinfo, arg4));
}
return ret;
#endif