1 files changed, 2 insertions, 0 deletions

diff --git a/fs/fcntl.c b/fs/fcntl.c
index bd215cc791da..04df8570a2d2 100644
--- a/fs/fcntl.c
+++ b/fs/fcntl.c
@@ -189,7 +189,9 @@ static int setfl(int fd, struct file * filp, unsigned long arg)
                 }
         }
 
+        spin_lock(&filp->f_lock);
         filp->f_flags = (arg & SETFL_MASK) | (filp->f_flags & ~SETFL_MASK);
+        spin_unlock(&filp->f_lock);
  out:
         unlock_kernel();
         return error;