From: Christoph Hellwig <hch@lst.de>
Date: Tue, 15 Apr 2014 10:24:55 +0000 (+0200)
Subject: [SCSI] don't reference freed command in scsi_init_sgtable
X-Git-Tag: omap-for-v3.16/pm-signed~51^2~5
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=5e012aad85f2ee31d7de5c21d63ccd2702d63db2;p=pandora-kernel.git

[SCSI] don't reference freed command in scsi_init_sgtable

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: when scsi_init_io fails we have to release our
device reference, but we do this trying to reference the just freed command.
Add a local scsi_device pointer to fix this.

Fixes: 0479633686d370303e3430256ace4bd5f7f138dc
Reported-by: Sander Eikelenboom <linux@eikelenboom.it>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
---

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