From ec2be6a98e50d3eb9f35f70aa51c5d2c23737c55 Mon Sep 17 00:00:00 2001 From: Bart Van Assche Date: Wed, 31 May 2017 14:43:48 -0700 Subject: [PATCH] pktcdvd: Check queue type before attaching to a queue Since the pktcdvd driver only supports request queues for which struct scsi_request is the first member of their private request data, refuse to register block layer queues for which struct scsi_request is not the first member of the private data. References: commit 82ed4db499b8 ("block: split scsi_request out of struct request") Signed-off-by: Bart Van Assche Reviewed-by: Hannes Reinecke Reviewed-by: Christoph Hellwig Cc: Omar Sandoval Signed-off-by: Jens Axboe --- drivers/block/pktcdvd.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/block/pktcdvd.c b/drivers/block/pktcdvd.c index 205b865ebeb9..42e3c880a8a5 100644 --- a/drivers/block/pktcdvd.c +++ b/drivers/block/pktcdvd.c @@ -2583,6 +2583,11 @@ static int pkt_new_dev(struct pktcdvd_device *pd, dev_t dev) bdev = bdget(dev); if (!bdev) return -ENOMEM; + if (!blk_queue_scsi_passthrough(bdev_get_queue(bdev))) { + WARN_ONCE(true, "Attempt to register a non-SCSI queue\n"); + bdput(bdev); + return -EINVAL; + } ret = blkdev_get(bdev, FMODE_READ | FMODE_NDELAY, NULL); if (ret) return ret;