From: Lars Ellenberg <lars.ellenberg@linbit.com>
Date: Wed, 25 Jun 2014 15:52:38 +0000 (+0200)
Subject: drbd: fix NULL pointer deref in blk_add_request_payload
X-Git-Tag: omap-for-v3.16/fixes-rc4~49^2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=54ed4ed8f9a5071a3bbae2e037376d8c02b9629b;p=pandora-kernel.git

drbd: fix NULL pointer deref in blk_add_request_payload

Discards don't have any payload.
But the scsi layer still expects a bio_vec it can use internally,
see sd_setup_discard_cmnd() and blk_add_request_payload().

Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
---

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