From f0871ab68a8b9db3bc89859169204f774fe707fd Mon Sep 17 00:00:00 2001 From: James Smart Date: Mon, 4 Jan 2021 10:02:32 -0800 Subject: [PATCH] scsi: lpfc: Prevent duplicate requests to unregister with cpuhp framework In the lpfc offline routine, called for various reasons such as sysfs attribute, driver unload, or port error, the driver is calling __lpfc_cpuhp_remove() to destroy the hot plug data. If the offline routine is called while the driver is in the process of being unloaded, a request using lpfc_cpuhp_remove() is also made from lpfc_sli4_hba_unset(). The cpuhp elements are no longer valid when the second removal request is made. Fix by only calling the cpuhp removal once when the adapter is in the process of unloading. Link: https://lore.kernel.org/r/20210104180240.46824-8-jsmart2021@gmail.com Co-developed-by: Dick Kennedy Signed-off-by: Dick Kennedy Signed-off-by: James Smart Signed-off-by: Martin K. Petersen --- drivers/scsi/lpfc/lpfc_init.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/drivers/scsi/lpfc/lpfc_init.c b/drivers/scsi/lpfc/lpfc_init.c index 593b175..af92676 100644 --- a/drivers/scsi/lpfc/lpfc_init.c +++ b/drivers/scsi/lpfc/lpfc_init.c @@ -3602,7 +3602,11 @@ lpfc_offline(struct lpfc_hba *phba) spin_unlock_irq(shost->host_lock); } lpfc_destroy_vport_work_array(phba, vports); - __lpfc_cpuhp_remove(phba); + /* If OFFLINE flag is clear (i.e. unloading), cpuhp removal is handled + * in hba_unset + */ + if (phba->pport->fc_flag & FC_OFFLINE_MODE) + __lpfc_cpuhp_remove(phba); if (phba->cfg_xri_rebalancing) lpfc_destroy_multixri_pools(phba); -- 2.7.4