scsi: Fix error handling in SCSI_IOCTL_SEND_COMMAND
When sg_scsi_ioctl() fails to prepare request to submit in
blk_rq_map_kern() we jump to a label where we just end up copying
(luckily zeroed-out) kernel buffer to userspace instead of reporting
error. Fix the problem by jumping to the right label.
CC: Jens Axboe <axboe@kernel.dk>
CC: linux-scsi@vger.kernel.org
CC: stable@vger.kernel.org
Coverity-id: 1226871
Signed-off-by: Jan Kara <jack@suse.cz>
Fixed up the, now unused, out label.
Signed-off-by: Jens Axboe <axboe@fb.com>
diff --git a/block/scsi_ioctl.c b/block/scsi_ioctl.c
index abb2e65..1e053d9 100644
--- a/block/scsi_ioctl.c
+++ b/block/scsi_ioctl.c
@@ -508,7 +508,7 @@
if (bytes && blk_rq_map_kern(q, rq, buffer, bytes, __GFP_WAIT)) {
err = DRIVER_ERROR << 24;
- goto out;
+ goto error;
}
memset(sense, 0, sizeof(sense));
@@ -517,7 +517,6 @@
blk_execute_rq(q, disk, rq, 0);
-out:
err = rq->errors & 0xff; /* only 8 bit SCSI status */
if (err) {
if (rq->sense_len && rq->sense) {