tree 8af1eb069624fa2aa4ab8a27b7eb39429b2998c0
parent 0ffbce80c263821161190f20e74a12f7aa8eab7b
author Lars Ellenberg <lars.ellenberg@linbit.com> 1403711558 +0200
committer Jens Axboe <axboe@fb.com> 1403711627 -0600

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>