From: Linus Torvalds <torvalds@linux-foundation.org>
Date: Fri, 8 Mar 2013 17:03:07 +0000 (-0800)
Subject: vfs: don't BUG_ON() if following a /proc fd pseudo-symlink results in a symlink
X-Git-Tag: v3.9-rc2~13
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=7b54c165a0c012edbaeaa73c5c87cb73721eb580;p=profile%2Fcommon%2Fkernel-common.git

vfs: don't BUG_ON() if following a /proc fd pseudo-symlink results in a symlink

It's "normal" - it can happen if the file descriptor you followed was
opened with O_NOFOLLOW.

Reported-by: Dave Jones <davej@redhat.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: stable@kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

diff --git a/fs/namei.c b/fs/namei.c
index 961bc12..57ae9c8 100644
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -689,8 +689,6 @@ void nd_jump_link(struct nameidata *nd, struct path *path)
 	nd->path = *path;
 	nd->inode = nd->path.dentry->d_inode;
 	nd->flags |= LOOKUP_JUMPED;
-
-	BUG_ON(nd->inode->i_op->follow_link);
 }
 
 static inline void put_link(struct nameidata *nd, struct path *link, void *cookie)