From: Jeff Mahoney <jeffm@suse.com>
Date: Tue, 23 Mar 2010 20:35:38 +0000 (-0700)
Subject: reiserfs: fix oops while creating privroot with selinux enabled
X-Git-Tag: v2.6.34-rc3~55
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=6cb4aff0a77cc0e6bae9475d62205319e3ebbf3f;p=pandora-kernel.git

reiserfs: fix oops while creating privroot with selinux enabled

Commit 57fe60df ("reiserfs: add atomic addition of selinux attributes
during inode creation") contains a bug that will cause it to oops when
mounting a file system that didn't previously contain extended attributes
on a system using security.* xattrs.

The issue is that while creating the privroot during mount
reiserfs_security_init calls reiserfs_xattr_jcreate_nblocks which
dereferences the xattr root.  The xattr root doesn't exist, so we get an
oops.

Addresses http://bugzilla.kernel.org/show_bug.cgi?id=15309

Signed-off-by: Jeff Mahoney <jeffm@suse.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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