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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 <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
James Smart 2017-06-15 22:56:41 -07:00 committed by Martin K. Petersen
parent d30ff26323
commit d41b65bcdc
1 changed files with 3 additions and 0 deletions
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3
drivers/scsi/lpfc/lpfc_sli.c
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@ -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);