1 files changed, 4 insertions, 0 deletions

diff --git a/fs/eventfd.c b/fs/eventfd.c
index 3ed4466177a7..08bf558d0408 100644
--- a/fs/eventfd.c
+++ b/fs/eventfd.c
@@ -203,6 +203,10 @@ asmlinkage long sys_eventfd2(unsigned int count, int flags)
         int fd;
         struct eventfd_ctx *ctx;
 
+        /* Check the EFD_* constants for consistency.  */
+        BUILD_BUG_ON(EFD_CLOEXEC != O_CLOEXEC);
+        BUILD_BUG_ON(EFD_NONBLOCK != O_NONBLOCK);
+
         if (flags & ~(EFD_CLOEXEC | EFD_NONBLOCK))
                 return -EINVAL;