From: Steven Whitehouse <swhiteho@redhat.com>
Date: Thu, 27 Nov 2008 08:27:28 +0000 (+0000)
Subject: GFS2: Fix use-after-free bug on umount
X-Git-Tag: v2.6.29-rc1~499^2~5
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=3af165ac4d099385b12e3e75a9ee3ffd02da33e0;p=pandora-kernel.git

GFS2: Fix use-after-free bug on umount

There was a use-after-free with the GFS2 super block during
umount. This patch moves almost all of the umount code from
->put_super into ->kill_sb, the only bit that cannot be moved
being the glock hash clearing which has to remain as ->put_super
due to umount ordering requirements. As a result its now obvious
that the kfree is the final operation, whereas before it was
hidden in ->put_super.

Also gfs2_jindex_free is then only referenced from a single file
so thats moved and marked static too.

Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
---

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