This is a note to let you know that I've just added the patch titled scsi: lpfc: Fix spinlock_irq issues in lpfc_els_flush_cmd() to the 5.4-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: scsi-lpfc-fix-spinlock_irq-issues-in-lpfc_els_flush_.patch and it can be found in the queue-5.4 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. commit e77b797ac9c51278bb46023a72cc5236d7987ed5 Author: James Smart <jsmart2021@xxxxxxxxx> Date: Sat Sep 21 20:59:00 2019 -0700 scsi: lpfc: Fix spinlock_irq issues in lpfc_els_flush_cmd() [ Upstream commit d38b4a527fe898f859f74a3a43d4308f48ac7855 ] While reviewing the CT behavior, issues with spinlock_irq were seen. The driver should be using spinlock_irqsave/irqrestore in the els flush routine. Changed to spinlock_irqsave/irqrestore. Link: https://lore.kernel.org/r/20190922035906.10977-15-jsmart2021@xxxxxxxxx Signed-off-by: Dick Kennedy <dick.kennedy@xxxxxxxxxxxx> Signed-off-by: James Smart <jsmart2021@xxxxxxxxx> Signed-off-by: Martin K. Petersen <martin.petersen@xxxxxxxxxx> Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> diff --git a/drivers/scsi/lpfc/lpfc_els.c b/drivers/scsi/lpfc/lpfc_els.c index d5303994bfd6..0052b341587d 100644 --- a/drivers/scsi/lpfc/lpfc_els.c +++ b/drivers/scsi/lpfc/lpfc_els.c @@ -7986,20 +7986,22 @@ lpfc_els_flush_cmd(struct lpfc_vport *vport) struct lpfc_sli_ring *pring; struct lpfc_iocbq *tmp_iocb, *piocb; IOCB_t *cmd = NULL; + unsigned long iflags = 0; lpfc_fabric_abort_vport(vport); + /* * For SLI3, only the hbalock is required. But SLI4 needs to coordinate * with the ring insert operation. Because lpfc_sli_issue_abort_iotag * ultimately grabs the ring_lock, the driver must splice the list into * a working list and release the locks before calling the abort. */ - spin_lock_irq(&phba->hbalock); + spin_lock_irqsave(&phba->hbalock, iflags); pring = lpfc_phba_elsring(phba); /* Bail out if we've no ELS wq, like in PCI error recovery case. */ if (unlikely(!pring)) { - spin_unlock_irq(&phba->hbalock); + spin_unlock_irqrestore(&phba->hbalock, iflags); return; } @@ -8037,21 +8039,21 @@ lpfc_els_flush_cmd(struct lpfc_vport *vport) if (phba->sli_rev == LPFC_SLI_REV4) spin_unlock(&pring->ring_lock); - spin_unlock_irq(&phba->hbalock); + spin_unlock_irqrestore(&phba->hbalock, iflags); /* Abort each txcmpl iocb on aborted list and remove the dlist links. */ list_for_each_entry_safe(piocb, tmp_iocb, &abort_list, dlist) { - spin_lock_irq(&phba->hbalock); + spin_lock_irqsave(&phba->hbalock, iflags); list_del_init(&piocb->dlist); lpfc_sli_issue_abort_iotag(phba, pring, piocb); - spin_unlock_irq(&phba->hbalock); + spin_unlock_irqrestore(&phba->hbalock, iflags); } if (!list_empty(&abort_list)) lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS, "3387 abort list for txq not empty\n"); INIT_LIST_HEAD(&abort_list); - spin_lock_irq(&phba->hbalock); + spin_lock_irqsave(&phba->hbalock, iflags); if (phba->sli_rev == LPFC_SLI_REV4) spin_lock(&pring->ring_lock); @@ -8091,7 +8093,7 @@ lpfc_els_flush_cmd(struct lpfc_vport *vport) if (phba->sli_rev == LPFC_SLI_REV4) spin_unlock(&pring->ring_lock); - spin_unlock_irq(&phba->hbalock); + spin_unlock_irqrestore(&phba->hbalock, iflags); /* Cancel all the IOCBs from the completions list */ lpfc_sli_cancel_iocbs(phba, &abort_list,