mnt: If fs_fully_visible fails call put_filesystem.

Add this trivial missing error handling. Cc: stable@vger.kernel.org Fixes: 1b852bc ("mnt: Refactor the logic for mounting sysfs and proc in a user namespace") Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
mariux64 · Jun 7, 2016 · 97c1df3 · 97c1df3
1 parent af8c34c
commit 97c1df3
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/fs/namespace.c b/fs/namespace.c
@@ -2409,8 +2409,10 @@ static int do_new_mount(struct path *path, const char *fstype, int flags,
 			mnt_flags |= MNT_NODEV | MNT_LOCK_NODEV;
 		}
 		if (type->fs_flags & FS_USERNS_VISIBLE) {
-			if (!fs_fully_visible(type, &mnt_flags))
+			if (!fs_fully_visible(type, &mnt_flags)) {
+				put_filesystem(type);
 				return -EPERM;
+			}
 		}
 	}