From: Christoph Hellwig <hch@lst.de>
Date: Tue, 15 Apr 2014 10:24:56 +0000 (+0200)
Subject: [SCSI] don't reference freed command in scsi_prep_return
X-Git-Tag: omap-for-v3.16/pm-signed~51^2~4
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=68c03d9193f55dad93036f439b94912c5003a173;p=pandora-kernel.git

[SCSI] don't reference freed command in scsi_prep_return

Patch

commit 0479633686d370303e3430256ace4bd5f7f138dc
Author: Christoph Hellwig <hch@infradead.org>
Date:   Thu Feb 20 14:20:55 2014 -0800

    [SCSI] do not manipulate device reference counts in scsi_get/put_command

Introduced a use after free:I in the kill case of scsi_prep_return we have to
release our device reference, but we do this trying to reference the just
freed command.  Use the local sdev pointer instead.

Fixes: 0479633686d370303e3430256ace4bd5f7f138dc
Reported-by: Joe Lawrence <joe.lawrence@stratus.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
---

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