Jeff Mahoney c3724b129b [PATCH] autofs4: fix race in unhashed dentry code
Commit f50b6f8691cae2e0064c499dd3ef3f31142987f0 introduced a race in
autofs4 between autofs_lookup_unhashed() and autofs_dentry_release().

autofs_dentry_release() ends up clearing the ->dentry and ->inode members
of autofs_info before removing it from the rehash list.  The list is
protected by the rehash lock in both functions, but since
autofs_dentry_release() starts tearing the autofs_info struct down before
removing it from the list, autofs_lookup_unhashed() can get a autofs_info
with a NULL dentry.

This patch moves the clearing of ->dentry and ->inode after the removal
from the rehash list.

Signed-off-by: Jeff Mahoney <jeffm@suse.com>
Acked-by: Ian Kent <raven@themaw.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-04-12 15:31:42 -07:00
..
2007-02-20 17:10:15 -08:00
2007-03-16 19:25:03 -07:00
2006-01-11 18:42:13 -08:00
2005-04-16 15:20:36 -07:00
2005-04-16 15:20:36 -07:00
2006-10-04 06:51:26 -06:00
2007-03-06 09:30:25 -08:00
2006-12-07 08:39:25 -08:00
2006-04-11 13:53:33 +02:00
2007-02-17 16:10:59 -05:00
2006-12-07 08:39:25 -08:00
2007-02-17 21:30:15 -05:00
2006-10-01 00:39:19 -07:00
2005-04-16 15:20:36 -07:00
2006-03-23 07:38:11 -08:00
2007-03-29 14:26:42 +02:00