diff options
| author | Daniel Wagner <dwagner@suse.de> | 2021-05-03 19:03:03 +0200 |
|---|---|---|
| committer | Christoph Hellwig <hch@lst.de> | 2021-05-04 09:39:23 +0200 |
| commit | ce86dad222e9074d3ec174ec81cb463a770331b5 (patch) | |
| tree | 1fe8534498736515b24ad6719dece49bdd3cd760 | |
| parent | d4060d2be1132596154f31f4d57976bd103e969d (diff) | |
nvme-multipath: reset bdev to ns head when failover
When a request finally completes in end_io() after it has failed over,
the bdev pointer can be stale and thus the system can crash. Set the
bdev back to ns head, so the request is map to an active path when
resubmitted.
Signed-off-by: Daniel Wagner <dwagner@suse.de>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Christoph Hellwig <hch@lst.de>
| -rw-r--r-- | drivers/nvme/host/multipath.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/nvme/host/multipath.c b/drivers/nvme/host/multipath.c index 0d0de3433f37..0551796517e6 100644 --- a/drivers/nvme/host/multipath.c +++ b/drivers/nvme/host/multipath.c @@ -70,6 +70,7 @@ void nvme_failover_req(struct request *req) struct nvme_ns *ns = req->q->queuedata; u16 status = nvme_req(req)->status & 0x7ff; unsigned long flags; + struct bio *bio; nvme_mpath_clear_current_path(ns); @@ -84,6 +85,8 @@ void nvme_failover_req(struct request *req) } spin_lock_irqsave(&ns->head->requeue_lock, flags); + for (bio = req->bio; bio; bio = bio->bi_next) + bio_set_dev(bio, ns->head->disk->part0); blk_steal_bios(&ns->head->requeue_list, req); spin_unlock_irqrestore(&ns->head->requeue_lock, flags); |