From: Ilya Dryomov <idryomov@gmail.com>
Date: Tue, 12 Feb 2013 16:27:46 +0000 (+0000)
Subject: Btrfs: eliminate a use-after-free in btrfs_balance()
X-Git-Tag: v3.9-rc1~17^2~29^2~12
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=bf023ecfcaf114c410759f375073e78b0871c120;p=pandora-kernel.git

Btrfs: eliminate a use-after-free in btrfs_balance()

Commit 5af3e8cc introduced a use-after-free at volumes.c:3139: bctl is freed
above in __cancel_balance() in all cases except for balance pause.  Fix this
by moving the offending check a couple statements above, the meaning of the
check is preserved.

Reported-by: Chris Mason <chris.mason@fusionio.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Signed-off-by: Josef Bacik <jbacik@fusionio.com>
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