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| author | Bart Van Assche <bart.vanassche@sandisk.com> | 2017-05-31 23:43:47 +0200 |
|---|---|---|
| committer | Jens Axboe <axboe@fb.com> | 2017-06-01 21:10:41 +0200 |
| commit | d9f972644606ecc2581390b43cb5a980b54c04bf (patch) | |
| tree | d3d18ca37ba991b198665560eae8d24cfbacc949 /block/bsg.c | |
| parent | block: Introduce queue flag QUEUE_FLAG_SCSI_PASSTHROUGH (diff) | |
| download | linux-d9f972644606ecc2581390b43cb5a980b54c04bf.tar.xz linux-d9f972644606ecc2581390b43cb5a980b54c04bf.zip | |
bsg: Check queue type before attaching to a queue
Since BSG 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 their private data.
References: commit bd1599d931ca ("scsi_transport_sas: fix BSG ioctl memory corruption")
References: commit 82ed4db499b8 ("block: split scsi_request out of struct request")
Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Cc: Omar Sandoval <osandov@fb.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'block/bsg.c')
| -rw-r--r-- | block/bsg.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/block/bsg.c b/block/bsg.c index 6fd08544d77e..40db8ff4c618 100644 --- a/block/bsg.c +++ b/block/bsg.c @@ -750,6 +750,12 @@ static struct bsg_device *bsg_add_device(struct inode *inode, #ifdef BSG_DEBUG unsigned char buf[32]; #endif + + if (!blk_queue_scsi_passthrough(rq)) { + WARN_ONCE(true, "Attempt to register a non-SCSI queue\n"); + return ERR_PTR(-EINVAL); + } + if (!blk_get_queue(rq)) return ERR_PTR(-ENXIO); |