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authorJan Kara <jack@suse.cz>2014-10-23 04:13:39 +0200
committerJens Axboe <axboe@fb.com>2014-10-23 04:13:39 +0200
commit84ce0f0e94ac97217398b3b69c21c7a62ebeed05 (patch)
treeedcef07ab6269ba6fb5ae02206de428b2a8f96f6 /block/scsi_ioctl.c
parentnull_blk: Cleanup error recovery in null_add_dev() (diff)
downloadlinux-84ce0f0e94ac97217398b3b69c21c7a62ebeed05.tar.xz
linux-84ce0f0e94ac97217398b3b69c21c7a62ebeed05.zip
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>
Diffstat (limited to 'block/scsi_ioctl.c')
-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 abb2e65b24cc..1e053d911240 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) {