From: Alexey Khoroshilov <khoroshilov@ispras.ru>
Date: Wed, 1 Oct 2014 20:58:35 +0000 (+0200)
Subject: dm log userspace: fix memory leak in dm_ulog_tfr_init failure path
X-Git-Tag: v3.2.65~121
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=6df54425eb8653a399e45024941a4b977f12922d;p=pandora-kernel.git

dm log userspace: fix memory leak in dm_ulog_tfr_init failure path

commit 56ec16cb1e1ce46354de8511eef962a417c32c92 upstream.

If cn_add_callback() fails in dm_ulog_tfr_init(), it does not
deallocate prealloced memory but calls cn_del_callback().

Found by Linux Driver Verification project (linuxtesting.org).

Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru>
Reviewed-by: Jonathan Brassow <jbrassow@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---

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