From d41b65bcdc43fed82ea6b3c006a268df6c53e80d Mon Sep 17 00:00:00 2001 From: James Smart Date: Thu, 15 Jun 2017 22:56:41 -0700 Subject: [PATCH] scsi: lpfc: Fix system panic when express lane enabled. There is a null pointer dereference that can happen in the FOF interrupt handler. The driver was not setting up cq->assoc_qp_for sli4_hba->oas_cq. Initialize cq->assoc_qp before accessing it. Signed-off-by: Dick Kennedy Signed-off-by: James Smart Reviewed-by: Hannes Reinecke Signed-off-by: Martin K. Petersen --- drivers/scsi/lpfc/lpfc_sli.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/scsi/lpfc/lpfc_sli.c b/drivers/scsi/lpfc/lpfc_sli.c index 040575adf9c6..4f2cc395597e 100644 --- a/drivers/scsi/lpfc/lpfc_sli.c +++ b/drivers/scsi/lpfc/lpfc_sli.c @@ -13560,6 +13560,9 @@ lpfc_sli4_fof_handle_eqe(struct lpfc_hba *phba, struct lpfc_eqe *eqe) return; } + /* Save EQ associated with this CQ */ + cq->assoc_qp = phba->sli4_hba.fof_eq; + /* Process all the entries to the OAS CQ */ while ((cqe = lpfc_sli4_cq_get(cq))) { workposted |= lpfc_sli4_fp_handle_cqe(phba, cq, cqe); -- 2.39.5