autofs: fix error return in autofs_fill_super()

[ Upstream commit f585b283e3f025754c45bbe7533fc6e5c4643700 ]

In autofs_fill_super() on error of get inode/make root dentry the return
should be ENOMEM as this is the only failure case of the called
functions.

Link: http://lkml.kernel.org/r/154725123240.11260.796773942606871359.stgit@pluto-themaw-net
Signed-off-by: Ian Kent <raven@themaw.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/fs/autofs4/inode.c b/fs/autofs4/inode.c
index 1132fe7..0fd472d 100644 (file)
--- a/fs/autofs4/inode.c
+++ b/fs/autofs4/inode.c
@@ -255,8 +255,10 @@ int autofs4_fill_super(struct super_block *s, void *data, int silent)
        }
        root_inode = autofs4_get_inode(s, S_IFDIR | 0755);
        root = d_make_root(root_inode);
-       if (!root)
+       if (!root) {
+               ret = -ENOMEM;
                goto fail_ino;
+       }
        pipe = NULL;
 
        root->d_fsdata = ino;