From: Roger Pau Monne <roger.pau@citrix.com>
Date: Tue, 4 Dec 2012 14:21:53 +0000 (+0100)
Subject: llist/xen-blkfront: implement safe version of llist_for_each_entry
X-Git-Tag: v3.8-rc7~11^2~3^2~1
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ebb351cf78ee6bf3262e6b4b6906f456c05e6d5e;p=pandora-kernel.git

llist/xen-blkfront: implement safe version of llist_for_each_entry

Implement a safe version of llist_for_each_entry, and use it in
blkif_free. Previously grants where freed while iterating the list,
which lead to dereferences when trying to fetch the next item.

Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Roger Pau Monné <roger.pau@citrix.com>
Acked-by:  Andrew Morton <akpm@linux-foundation.org>
[v2: Move the llist_for_each_entry_safe in llist.h]
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
---

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