linux-user: Detect fault in sched_rr_get_interval

Properly detect a fault when attempting to store into an invalid
struct timespec pointer.

Signed-off-by: Tom Musta <tommusta@gmail.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Riku Voipio <riku.voipio@linaro.org>

diff --git a/linux-user/syscall.c b/linux-user/syscall.c
index 4424b63c8666267dc00614de125963bca842208c..ed32f9723f17ce6e97038e75169cd5458a645f54 100644 (file)
--- a/linux-user/syscall.c
+++ b/linux-user/syscall.c
@@ -7794,7 +7794,7 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1,
             struct timespec ts;
             ret = get_errno(sched_rr_get_interval(arg1, &ts));
             if (!is_error(ret)) {
-                host_to_target_timespec(arg2, &ts);
+                ret = host_to_target_timespec(arg2, &ts);
             }
         }
         break;