[Qemu-devel] [PATCH 2/3] linux-user: Fix wrong type used for argument to rt_sigqueueinfo

[Peter Maydell <peter.maydell@linaro.org>]

The third argument to the rt_sigqueueinfo syscall is a pointer to
a siginfo_t, not a pointer to a sigset_t. Fix the error in the
arguments to lock_user(), which meant that we would not have
detected some faults that we should.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
---
 linux-user/syscall.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/linux-user/syscall.c b/linux-user/syscall.c
index 7b3d129..8065284 100644
--- a/linux-user/syscall.c
+++ b/linux-user/syscall.c
@@ -7909,8 +7909,11 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1,
     case TARGET_NR_rt_sigqueueinfo:
         {
             siginfo_t uinfo;
-            if (!(p = lock_user(VERIFY_READ, arg3, sizeof(target_sigset_t), 1)))
+
+            p = lock_user(VERIFY_READ, arg3, sizeof(target_siginfo_t), 1);
+            if (!p) {
                 goto efault;
+            }
             target_to_host_siginfo(&uinfo, p);
             unlock_user(p, arg1, 0);
             ret = get_errno(sys_rt_sigqueueinfo(arg1, arg2, &uinfo));
-- 
1.9.1