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authorJan Kara <jack@suse.cz>2014-10-22 20:13:39 -0600
committerJens Axboe <axboe@fb.com>2014-10-22 20:13:39 -0600
commit84ce0f0e94ac97217398b3b69c21c7a62ebeed05 (patch)
treeedcef07ab6269ba6fb5ae02206de428b2a8f96f6
parent31f9690e6eaf549f3e643f6a8f7dab84fd31997a (diff)
downloadop-kernel-dev-84ce0f0e94ac97217398b3b69c21c7a62ebeed05.zip
op-kernel-dev-84ce0f0e94ac97217398b3b69c21c7a62ebeed05.tar.gz
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>
-rw-r--r--block/scsi_ioctl.c3
1 files changed, 1 insertions, 2 deletions
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 @@ int sg_scsi_ioctl(struct request_queue *q, struct gendisk *disk, fmode_t mode,
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 @@ int sg_scsi_ioctl(struct request_queue *q, struct gendisk *disk, fmode_t mode,
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) {
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