vfs: fix return value from do_last()

complete_walk() returns either ECHILD or ESTALE.  do_last() turns this into
ECHILD unconditionally.  If not in RCU mode, this error will reach userspace
which is complete nonsense.

Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
CC: stable@vger.kernel.org
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

1 files changed, 1 insertions, 1 deletions

diff --git a/fs/namei.c b/fs/namei.c
index f79aef16320b..46ea9cc16647 100644
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -2162,7 +2162,7 @@ static struct file *do_last(struct nameidata *nd, struct path *path,
                 /* sayonara */
                 error = complete_walk(nd);
                 if (error)
-                        return ERR_PTR(-ECHILD);
+                        return ERR_PTR(error);
 
                 error = -ENOTDIR;
                 if (nd->flags & LOOKUP_DIRECTORY) {