From 0e794589e588a88d34e339feee50c72606fb21a7 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Wed, 16 Mar 2011 02:45:02 -0400 Subject: [PATCH] fix follow_link() breakage commit 574197e0de46a8a4db5c54ef7b65e43ffa8873a7 had a missing piece, breaking the loop detection ;-/ Signed-off-by: Al Viro --- fs/namei.c | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-) diff --git a/fs/namei.c b/fs/namei.c index 0a601cae23de..b912b7abe747 100644 --- a/fs/namei.c +++ b/fs/namei.c @@ -753,9 +753,11 @@ follow_link(struct path *link, struct nameidata *nd, void **p) BUG_ON(nd->flags & LOOKUP_RCU); + if (link->mnt == nd->path.mnt) + mntget(link->mnt); + if (unlikely(current->total_link_count >= 40)) { *p = ERR_PTR(-ELOOP); /* no ->put_link(), please */ - path_put_conditional(link, nd); path_put(&nd->path); return -ELOOP; } @@ -765,9 +767,6 @@ follow_link(struct path *link, struct nameidata *nd, void **p) touch_atime(link->mnt, dentry); nd_set_link(nd, NULL); - if (link->mnt == nd->path.mnt) - mntget(link->mnt); - error = security_inode_follow_link(link->dentry, nd); if (error) { *p = ERR_PTR(error); /* no ->put_link(), please */ -- 2.39.5