I've got an oops for the following stack:
...
lpfc_send_taskmgmt+0x28a [lpfc]
lpfc_bus_reset_handler+0x16a [lpfc]
scsi_try_bus_reset+0x3a
scsi_ioctl_reset+0x143
scsi_ioctl+0x18e [sg]
The issue is that lpfc eventually calls blk_mq_unique_tag() as
everything is scsi-mq enabled. blk_mq_unique_tag() oops as rq->mq_hctx
is NULL. It is NULL as scsi_ioctl_reset built up a dummy request struct
without a queue:
blk_rq_init(NULL, rq);
scmd = (struct scsi_cmnd *)(rq + 1);
scsi_init_command(dev, scmd);
scmd->request = rq;
scmd->cmnd = scsi_req(rq)->cmd;
What's the best way to approach fixing this ?
-- james
