1 files changed, 8 insertions, 1 deletions

diff --git a/fs/namespace.c b/fs/namespace.c
index ffa3843404e0..8174c8ab5c70 100644
--- a/fs/namespace.c
+++ b/fs/namespace.c
@@ -1136,8 +1136,15 @@ SYSCALL_DEFINE2(umount, char __user *, name, int, flags)
 {
         struct path path;
         int retval;
+        int lookup_flags = 0;
 
-        retval = user_path(name, &path);
+        if (flags & ~(MNT_FORCE | MNT_DETACH | MNT_EXPIRE | UMOUNT_NOFOLLOW))
+                return -EINVAL;
+
+        if (!(flags & UMOUNT_NOFOLLOW))
+                lookup_flags |= LOOKUP_FOLLOW;
+
+        retval = user_path_at(AT_FDCWD, name, lookup_flags, &path);
         if (retval)
                 goto out;
         retval = -EINVAL;