From: Bart Van Assche <bvanassche@acm.org>
Date: Sat, 20 Mar 2021 16:23:59 -0700
Subject: scsi: qla2xxx: Check kzalloc() return value
Patch-mainline: v5.13-rc1
Git-commit: e5406d8ad4a1659f4d4d1b39fe203855c4eaef2d
References: bsc#1185491

Instead of crashing if kzalloc() fails, make qla2x00_get_host_stats()
return -ENOMEM.

Link: https://lore.kernel.org/r/20210320232359.941-8-bvanassche@acm.org
Fixes: dbf1f53cfd23 ("scsi: qla2xxx: Implementation to get and manage host, target stats and initiator port")
Cc: Himanshu Madhani <himanshu.madhani@oracle.com>
Cc: Saurav Kashyap <skashyap@marvell.com>
Cc: Nilesh Javali <njavali@marvell.com>
Cc: Quinn Tran <qutran@marvell.com>
Cc: Mike Christie <michael.christie@oracle.com>
Cc: Daniel Wagner <dwagner@suse.de>
Cc: Lee Duncan <lduncan@suse.com>
Reviewed-by: Daniel Wagner <dwagner@suse.de>
Reviewed-by: Himanshu Madhani <himanshu.madhani@oracle.com>
Acked-by: Saurav Kashyap <skashyap@marvell.com>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
---
 drivers/scsi/qla2xxx/qla_bsg.c |    4 ++++
 1 file changed, 4 insertions(+)

--- a/drivers/scsi/qla2xxx/qla_bsg.c
+++ b/drivers/scsi/qla2xxx/qla_bsg.c
@@ -2584,6 +2584,10 @@ qla2x00_get_host_stats(struct bsg_job *b
 	}
 
 	data = kzalloc(response_len, GFP_KERNEL);
+	if (!data) {
+		kfree(req_data);
+		return -ENOMEM;
+	}
 
 	ret = qla2xxx_get_ini_stats(fc_bsg_to_shost(bsg_job), req_data->stat_type,
 				    data, response_len);