From: Johannes Thumshirn <jthumshirn@suse.de>
Date: Mon, 17 Aug 2015 11:03:02 +0000 (+0200)
Subject: lpfc: Fix possible use-after-free and double free in lpfc_mbx_cmpl_rdp_page_a2()
X-Git-Tag: omap-for-v4.3/fixes-rc1~25^2~5
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=612872cabf5be6f95d43d9a88eef38201ae8005d;p=pandora-kernel.git

lpfc: Fix possible use-after-free and double free in lpfc_mbx_cmpl_rdp_page_a2()

If the bf_get() call in lpfc_mbx_cmpl_rdp_page_a2() does succeeds, execution
continues normally and mp gets kfree()d.

If the subsequent call to lpfc_sli_issue_mbox() fails execution jumps to the
error label where lpfc_mbuf_free() is called with mp->virt and mp->phys as
function arguments. This is the use after free. Following the use after free mp
gets kfree()d again which is a double free.

Signed-off-by: Johannes Thumshirn <jthumshirn@suse.de>
Acked-by: James Smart <james.smart@avagotech.com>
Signed-off-by: James Bottomley <JBottomley@Odin.com>
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