tree 86dfc9927fe8b45aed7be80ec589231c3573c835
parent 5e012aad85f2ee31d7de5c21d63ccd2702d63db2
author Christoph Hellwig <hch@lst.de> 1397557496 +0200
committer James Bottomley <JBottomley@Parallels.com> 1398092242 -0700

[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>