From: Dick Kennedy <dick.kennedy@broadcom.com>
Date: Wed, 23 Aug 2017 16:55:33 -0700
Subject: scsi: lpfc: Fix oops when NVME Target is discovered in a nonNVME
 environment
Patch-mainline: v4.14-rc1
Git-commit: bb6a8a2c24f263cdff78b62ada58cecd8c89c03d
References: bsc#1050239,FATE#322918

lpfc oops when it discovers a NVME target but is configured for SCSI
only operation. Oops is in lpfc_nvme_register_port+0x33/0x300.

The localport is not valid so it should not have been referenced.

Added validity check for localport

Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Acked-by: Johannes Thumshirn <jthumshirn@suse.de>
---
 drivers/scsi/lpfc/lpfc_nvme.c |    3 +++
 1 file changed, 3 insertions(+)

--- a/drivers/scsi/lpfc/lpfc_nvme.c
+++ b/drivers/scsi/lpfc/lpfc_nvme.c
@@ -2296,6 +2296,9 @@ lpfc_nvme_register_port(struct lpfc_vpor
 			 ndlp->nlp_DID, ndlp->nlp_type);
 
 	localport = vport->localport;
+	if (!localport)
+		return 0;
+
 	lport = (struct lpfc_nvme_lport *)localport->private;
 
 	/* NVME rports are not preserved across devloss.