Commit 7a509a6b authored by Keith Busch's avatar Keith Busch Committed by Jens Axboe

NVMe: Fix locking on abort handling

The queues and device need to be locked when messing with them.
Signed-off-by: default avatarKeith Busch <keith.busch@intel.com>
Signed-off-by: default avatarJens Axboe <axboe@fb.com>
parent c9d3bf88
......@@ -1021,14 +1021,19 @@ static void nvme_abort_req(struct request *req)
struct nvme_command cmd;
if (!nvmeq->qid || cmd_rq->aborted) {
unsigned long flags;
spin_lock_irqsave(&dev_list_lock, flags);
if (work_busy(&dev->reset_work))
return;
goto out;
list_del_init(&dev->node);
dev_warn(&dev->pci_dev->dev,
"I/O %d QID %d timeout, reset controller\n",
req->tag, nvmeq->qid);
dev->reset_workfn = nvme_reset_failed_dev;
queue_work(nvme_workq, &dev->reset_work);
out:
spin_unlock_irqrestore(&dev_list_lock, flags);
return;
}
......@@ -1096,25 +1101,29 @@ static enum blk_eh_timer_return nvme_timeout(struct request *req, bool reserved)
struct nvme_cmd_info *cmd = blk_mq_rq_to_pdu(req);
struct nvme_queue *nvmeq = cmd->nvmeq;
/*
* The aborted req will be completed on receiving the abort req.
* We enable the timer again. If hit twice, it'll cause a device reset,
* as the device then is in a faulty state.
*/
int ret = BLK_EH_RESET_TIMER;
dev_warn(nvmeq->q_dmadev, "Timeout I/O %d QID %d\n", req->tag,
nvmeq->qid);
spin_lock_irq(&nvmeq->q_lock);
if (!nvmeq->dev->initialized) {
/*
* Force cancelled command frees the request, which requires we
* return BLK_EH_NOT_HANDLED.
*/
nvme_cancel_queue_ios(nvmeq->hctx, req, nvmeq, reserved);
return BLK_EH_NOT_HANDLED;
}
nvme_abort_req(req);
ret = BLK_EH_NOT_HANDLED;
} else
nvme_abort_req(req);
spin_unlock_irq(&nvmeq->q_lock);
/*
* The aborted req will be completed on receiving the abort req.
* We enable the timer again. If hit twice, it'll cause a device reset,
* as the device then is in a faulty state.
*/
return BLK_EH_RESET_TIMER;
return ret;
}
static void nvme_free_queue(struct nvme_queue *nvmeq)
......
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