1 files changed, 2 insertions, 1 deletions

diff --git a/include/linux/thread_info.h b/include/linux/thread_info.h
index ed279701ac7..ccc1899bd62 100644
--- a/include/linux/thread_info.h
+++ b/include/linux/thread_info.h
@@ -8,6 +8,7 @@
 #define _LINUX_THREAD_INFO_H
 
 #include <linux/types.h>
+#include <linux/bug.h>
 
 struct timespec;
 struct compat_timespec;
@@ -125,7 +126,7 @@ static inline int test_ti_thread_flag(struct thread_info *ti, int flag)
 static inline void set_restore_sigmask(void)
 {
         set_thread_flag(TIF_RESTORE_SIGMASK);
-        set_thread_flag(TIF_SIGPENDING);
+        WARN_ON(!test_thread_flag(TIF_SIGPENDING));
 }
 static inline void clear_restore_sigmask(void)
 {