linux-kernel - [PATCH 5.4 205/222] scsi: lpfc: fix: Coverity: lpfc_get_scsi_buf

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Date:   Wed, 22 Jan 2020 10:29:51 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org
Subject: [PATCH 5.4 205/222] scsi: lpfc: fix: Coverity: lpfc_get_scsi_buf_s3(): Null pointer dereferences

From: James Smart <jsmart2021@...il.com>

commit 6f23f8c5c9f1be4eb17c035129c80e49000c18a7 upstream.

Coverity reported the following:

---
 drivers/scsi/lpfc/lpfc_scsi.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/scsi/lpfc/lpfc_scsi.c
+++ b/drivers/scsi/lpfc/lpfc_scsi.c
@@ -719,7 +719,7 @@ lpfc_get_scsi_buf_s4(struct lpfc_hba *ph
 	iocb->ulpLe = 1;
 	iocb->ulpClass = CLASS3;
 
-	if (lpfc_ndlp_check_qdepth(phba, ndlp)) {
+	if (lpfc_ndlp_check_qdepth(phba, ndlp) && lpfc_cmd) {
 		atomic_inc(&ndlp->cmd_pending);
 		lpfc_cmd->flags |= LPFC_SBUF_BUMP_QDEPTH;
 	}