The patch below does not apply to the 5.10-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to stable@vger.kernel.org.
thanks,
greg k-h
------------------ original commit in Linus's tree ------------------
From 118b0c863c8f5629cc5271fc24d72d926e0715d9 Mon Sep 17 00:00:00 2001 From: Arun Easi aeasi@marvell.com Date: Wed, 15 Jun 2022 22:35:04 -0700 Subject: [PATCH] scsi: qla2xxx: Fix losing target when it reappears during delete
FC target disappeared during port perturbation tests due to a race that tramples target state. Fix the issue by adding state checks before proceeding.
Link: https://lore.kernel.org/r/20220616053508.27186-8-njavali@marvell.com Fixes: 44c57f205876 ("scsi: qla2xxx: Changes to support FCP2 Target") Cc: stable@vger.kernel.org Signed-off-by: Arun Easi aeasi@marvell.com Signed-off-by: Nilesh Javali njavali@marvell.com Signed-off-by: Martin K. Petersen martin.petersen@oracle.com
diff --git a/drivers/scsi/qla2xxx/qla_attr.c b/drivers/scsi/qla2xxx/qla_attr.c index 8b87fefda423..feca9e44b21c 100644 --- a/drivers/scsi/qla2xxx/qla_attr.c +++ b/drivers/scsi/qla2xxx/qla_attr.c @@ -2714,17 +2714,24 @@ qla2x00_dev_loss_tmo_callbk(struct fc_rport *rport) if (!fcport) return;
- /* Now that the rport has been deleted, set the fcport state to - FCS_DEVICE_DEAD */ - qla2x00_set_fcport_state(fcport, FCS_DEVICE_DEAD); + + /* + * Now that the rport has been deleted, set the fcport state to + * FCS_DEVICE_DEAD, if the fcport is still lost. + */ + if (fcport->scan_state != QLA_FCPORT_FOUND) + qla2x00_set_fcport_state(fcport, FCS_DEVICE_DEAD);
/* * Transport has effectively 'deleted' the rport, clear * all local references. */ spin_lock_irqsave(host->host_lock, flags); - fcport->rport = fcport->drport = NULL; - *((fc_port_t **)rport->dd_data) = NULL; + /* Confirm port has not reappeared before clearing pointers. */ + if (rport->port_state != FC_PORTSTATE_ONLINE) { + fcport->rport = fcport->drport = NULL; + *((fc_port_t **)rport->dd_data) = NULL; + } spin_unlock_irqrestore(host->host_lock, flags);
if (test_bit(ABORT_ISP_ACTIVE, &fcport->vha->dpc_flags)) @@ -2757,9 +2764,12 @@ qla2x00_terminate_rport_io(struct fc_rport *rport) /* * At this point all fcport's software-states are cleared. Perform any * final cleanup of firmware resources (PCBs and XCBs). + * + * Attempt to cleanup only lost devices. */ if (fcport->loop_id != FC_NO_LOOP_ID) { - if (IS_FWI2_CAPABLE(fcport->vha->hw)) { + if (IS_FWI2_CAPABLE(fcport->vha->hw) && + fcport->scan_state != QLA_FCPORT_FOUND) { if (fcport->loop_id != FC_NO_LOOP_ID) fcport->logout_on_delete = 1;
@@ -2769,7 +2779,7 @@ qla2x00_terminate_rport_io(struct fc_rport *rport) __LINE__); qlt_schedule_sess_for_deletion(fcport); } - } else { + } else if (!IS_FWI2_CAPABLE(fcport->vha->hw)) { qla2x00_port_logout(fcport->vha, fcport); } }