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scsi: lpfc: Check queue pointer before use

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[ Upstream commit 535fb49e73 ]

The queue pointer might not be valid. The rest of the code checks the
pointer before accessing it. lpfc_sli4_process_missed_mbox_completions is
the only place where the check is missing.

Fixes: 657add4e5e ("scsi: lpfc: Fix poor use of hardware queues if fewer irq vectors")
Cc: James Smart <jsmart2021@gmail.com>
Link: https://lore.kernel.org/r/20191018162111.8798-1-dwagner@suse.de
Signed-off-by: Daniel Wagner <dwagner@suse.de>
Reviewed-by: James Smart <james.smart@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Daniel Wagner
2019-10-18 18:21:11 +02:00
committed by Greg Kroah-Hartman
parent cce90d6489
commit 7153621da5
1 changed files with 1 additions and 1 deletions
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2
drivers/scsi/lpfc/lpfc_sli.c
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@@ -7898,7 +7898,7 @@ lpfc_sli4_process_missed_mbox_completions(struct lpfc_hba *phba)
if (sli4_hba->hdwq) { if (sli4_hba->hdwq) {
for (eqidx = 0; eqidx < phba->cfg_irq_chann; eqidx++) { for (eqidx = 0; eqidx < phba->cfg_irq_chann; eqidx++) {
eq = phba->sli4_hba.hba_eq_hdl[eqidx].eq; eq = phba->sli4_hba.hba_eq_hdl[eqidx].eq;
if (eq->queue_id == sli4_hba->mbx_cq->assoc_qid) { if (eq && eq->queue_id == sli4_hba->mbx_cq->assoc_qid) {
fpeq = eq; fpeq = eq;
break; break;
} }