From a5b92ce2452c3030d9781e0d7c309e374cef16d1 Mon Sep 17 00:00:00 2001
From: Bart Van Assche <bvanassche@acm.org>
Date: Sat, 15 May 2021 22:27:13 +0000
Subject: [PATCH] qla2x00t-32gbit: Check kzalloc() return value

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>
[ commit e5406d8ad4a1659f4d4d1b39fe203855c4eaef2d upstream ]


git-svn-id: http://svn.code.sf.net/p/scst/svn/trunk@9400 d57e44dd-8a1f-0410-8b47-8ef2f437770f
---
 qla2x00t-32gbit/qla_bsg.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/qla2x00t-32gbit/qla_bsg.c b/qla2x00t-32gbit/qla_bsg.c
index b37851583..8989c7ad5 100644
--- a/qla2x00t-32gbit/qla_bsg.c
+++ b/qla2x00t-32gbit/qla_bsg.c
@@ -2725,6 +2725,10 @@ qla2x00_get_host_stats(struct bsg_job *bsg_job)
 	}
 
 	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);