sg: pass the device name to blk_trace_setup

Fix a regression that passed a NULL device name to blk_trace_setup
accidentally.

Fixes: aebbb5831fbd ("sg: do not allocate a gendisk")
Reported-by: syzbot+f74aa89114a236643919@syzkaller.appspotmail.com
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Max Gurtovoy <mgurtovoy@nvidia.com>
Link: https://lore.kernel.org/r/20210825075438.1883687-1-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>

diff --git a/drivers/scsi/sg.c b/drivers/scsi/sg.c
index 477267a..d5889b4 100644 (file)
--- a/drivers/scsi/sg.c
+++ b/drivers/scsi/sg.c
@@ -1118,7 +1118,7 @@ sg_ioctl_common(struct file *filp, Sg_device *sdp, Sg_fd *sfp,
                return put_user(max_sectors_bytes(sdp->device->request_queue),
                                ip);
        case BLKTRACESETUP:
-               return blk_trace_setup(sdp->device->request_queue, NULL,
+               return blk_trace_setup(sdp->device->request_queue, sdp->name,
                                       MKDEV(SCSI_GENERIC_MAJOR, sdp->index),
                                       NULL, p);
        case BLKTRACESTART: