From: Steffen Maier Date: Tue, 5 Nov 2013 11:59:46 +0000 (+0100) Subject: s390/scm_blk: fix endless loop for requests != REQ_TYPE_FS X-Git-Tag: v3.13-rc1~166^2 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=de9587a2f54d2d0063f0dbc775328129b9daaaa2;p=platform%2Fkernel%2Flinux-stable.git s390/scm_blk: fix endless loop for requests != REQ_TYPE_FS The while loop only peeks at the top request in the queue but does not yet consume it. Since we only handle fs requests, we need to dequeue and complete all other request command types with error just in case we would ever receive such an unforeseen request. Signed-off-by: Steffen Maier Signed-off-by: Sebastian Ott Signed-off-by: Martin Schwidefsky --- diff --git a/drivers/s390/block/scm_blk.c b/drivers/s390/block/scm_blk.c index 5d73e6e..548209a 100644 --- a/drivers/s390/block/scm_blk.c +++ b/drivers/s390/block/scm_blk.c @@ -223,8 +223,12 @@ static void scm_blk_request(struct request_queue *rq) int ret; while ((req = blk_peek_request(rq))) { - if (req->cmd_type != REQ_TYPE_FS) + if (req->cmd_type != REQ_TYPE_FS) { + blk_start_request(req); + blk_dump_rq_flags(req, KMSG_COMPONENT " bad request"); + blk_end_request_all(req, -EIO); continue; + } if (!scm_permit_request(bdev, req)) { scm_ensure_queue_restart(bdev);