From: Bart Van Assche <bvanassche@acm.org>
Date: Thu, 8 Aug 2019 20:02:07 -0700
Subject: scsi: qla2xxx: Make qlt_handle_abts_completion() more robust
Patch-mainline: v5.4-rc1
Git-commit: e752a04e1bd14ccff2762605004f515ad9b0d48a
References: bsc#1123034 bsc#1131304 bsc#1127988 bsc#1143706

Avoid that this function crashes if mcmd == NULL.

Cc: Himanshu Madhani <hmadhani@marvell.com>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Tested-by: Himanshu Madhani <hmadhani@marvell.com>
Reviewed-by: Himanshu Madhani <hmadhani@marvell.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Acked-by: Daniel Wagner <dwagner@suse.de>
---
 drivers/scsi/qla2xxx/qla_target.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/scsi/qla2xxx/qla_target.c
+++ b/drivers/scsi/qla2xxx/qla_target.c
@@ -5743,7 +5743,7 @@ static void qlt_handle_abts_completion(s
 			    entry->error_subcode2);
 			ha->tgt.tgt_ops->free_mcmd(mcmd);
 		}
-	} else {
+	} else if (mcmd) {
 		ha->tgt.tgt_ops->free_mcmd(mcmd);
 	}
 }