From: Yan, Zheng <zheng.z.yan@intel.com>
Date: Thu, 20 Sep 2012 09:42:25 +0000 (+0800)
Subject: ceph: Fix oops when handling mdsmap that decreases max_mds
X-Git-Tag: v3.7-rc1~90^2~6
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=3e8f43a089f06279c5f76a9ccd42578eebf7bfa5;p=pandora-kernel.git

ceph: Fix oops when handling mdsmap that decreases max_mds

When i >= newmap->m_max_mds, ceph_mdsmap_get_addr(newmap, i) return
NULL. Passing NULL to memcmp() triggers oops.

Signed-off-by: Yan, Zheng <zheng.z.yan@intel.com>
Signed-off-by: Sage Weil <sage@inktank.com>
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