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| author | James Smart <jsmart2021@gmail.com> | 2018-05-25 06:08:59 +0200 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2018-05-29 04:40:33 +0200 |
| commit | 7438273fa23bea6d1e647e66c451570b86e2758b (patch) | |
| tree | 5d5ee28789dc9ea6c93fc403c50b708442a8a589 /drivers/scsi | |
| parent | scsi: lpfc: correct oversubscription of nvme io requests for an adapter (diff) | |
| download | linux-7438273fa23bea6d1e647e66c451570b86e2758b.tar.xz linux-7438273fa23bea6d1e647e66c451570b86e2758b.zip | |
scsi: lpfc: Fix crash in blk_mq layer when executing modprobe -r lpfc
modprobe -r lpfc produces the following:
Call Trace:
__blk_mq_run_hw_queue+0xa2/0xb0
__blk_mq_delay_run_hw_queue+0x9d/0xb0
? blk_mq_hctx_has_pending+0x32/0x80
blk_mq_run_hw_queue+0x50/0xd0
blk_mq_sched_insert_request+0x110/0x1b0
blk_execute_rq_nowait+0x76/0x180
nvme_keep_alive_work+0x8a/0xd0 [nvme_core]
process_one_work+0x17f/0x440
worker_thread+0x126/0x3c0
? manage_workers.isra.24+0x2a0/0x2a0
kthread+0xd1/0xe0
? insert_kthread_work+0x40/0x40
ret_from_fork_nospec_begin+0x21/0x21
? insert_kthread_work+0x40/0x40
However, rmmod lpfc would run correctly.
When an nvme remoteport is unregistered with the host nvme transport, it
needs to set the remoteport->dev_loss_tmo value 0 to indicate an immediate
termination of device loss and prevent any further keep alives to that
rport. The driver was never setting dev_loss_tmo causing the nvme
transport to continue to send the keep alive.
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi')
| -rw-r--r-- | drivers/scsi/lpfc/lpfc_nvme.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/scsi/lpfc/lpfc_nvme.c b/drivers/scsi/lpfc/lpfc_nvme.c index 288dd3caff8a..76a5a99605aa 100644 --- a/drivers/scsi/lpfc/lpfc_nvme.c +++ b/drivers/scsi/lpfc/lpfc_nvme.c @@ -2862,6 +2862,15 @@ lpfc_nvme_unregister_port(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) * The transport will update it. */ ndlp->upcall_flags |= NLP_WAIT_FOR_UNREG; + + /* Don't let the host nvme transport keep sending keep-alives + * on this remoteport. Vport is unloading, no recovery. The + * return values is ignored. The upcall is a courtesy to the + * transport. + */ + if (vport->load_flag & FC_UNLOADING) + (void)nvme_fc_set_remoteport_devloss(remoteport, 0); + ret = nvme_fc_unregister_remoteport(remoteport); if (ret != 0) { lpfc_nlp_put(ndlp); |