From: Bart Van Assche <bart.vanassche@wdc.com>
Date: Fri, 25 Aug 2017 13:46:40 -0700
Subject: [PATCH] scsi: scsi_transport_sas: Check kzalloc() return value
Git-commit: e1779b4ff5412fcb7f943f6b49cac5e70fc724e2
Patch-mainline: v4.14-rc1
References: bsc#1118139
Check whether memory allocation succeeded before dereferencing
the pointer to the allocated memory.
Signed-off-by: Bart Van Assche <bart.vanassche@wdc.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Cc: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Acked-by: Hannes Reinecke <hare@suse.com>
---
drivers/scsi/scsi_transport_sas.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/scsi/scsi_transport_sas.c b/drivers/scsi/scsi_transport_sas.c
index 5006a656e16a..e2e948f1ce28 100644
--- a/drivers/scsi/scsi_transport_sas.c
+++ b/drivers/scsi/scsi_transport_sas.c
@@ -421,6 +421,9 @@ sas_tlr_supported(struct scsi_device *sdev)
char *buffer = kzalloc(vpd_len, GFP_KERNEL);
int ret = 0;
+ if (!buffer)
+ goto out;
+
if (scsi_get_vpd_page(sdev, 0x90, buffer, vpd_len))
goto out;
--
2.12.3