From: Jan Beulich <JBeulich@suse.com>
Date: Thu, 20 Dec 2012 10:31:11 +0000 (+0000)
Subject: xen-blkback: do not leak mode property
X-Git-Tag: v3.2.40~75
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=0b9662bc67d91cf8ce3a7b8f88fa12bbd5eba153;p=pandora-kernel.git

xen-blkback: do not leak mode property

commit 9d092603cc306ee6edfe917bf9ab8beb5f32d7bc upstream.

"be->mode" is obtained from xenbus_read(), which does a kmalloc() for
the message body. The short string is never released, so do it along
with freeing "be" itself, and make sure the string isn't kept when
backend_changed() doesn't complete successfully (which made it
desirable to slightly re-structure that function, so that the error
cleanup can be done in one place).

Reported-by: Olaf Hering <olaf@aepfle.de>
Signed-off-by: Jan Beulich <jbeulich@suse.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---

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