1 files changed, 2 insertions, 1 deletions

diff --git a/kernel/exit.c b/kernel/exit.c
index 44fbe6edd7fe..9e6e1356e6bb 100644
--- a/kernel/exit.c
+++ b/kernel/exit.c
@@ -1535,7 +1535,8 @@ SYSCALL_DEFINE5(waitid, int, which, pid_t, upid, struct siginfo __user *,
         enum pid_type type;
         long ret;
 
-        if (options & ~(WNOHANG|WNOWAIT|WEXITED|WSTOPPED|WCONTINUED))
+        if (options & ~(WNOHANG|WNOWAIT|WEXITED|WSTOPPED|WCONTINUED|
+                        __WNOTHREAD|__WCLONE|__WALL))
                 return -EINVAL;
         if (!(options & (WEXITED|WSTOPPED|WCONTINUED)))
                 return -EINVAL;