From: Hannes Reinecke <hare@suse.de>
Date: Tue, 15 Aug 2017 10:21:41 +0200
Subject: [PATCH] scsi: ses: check return code from ses_recv_diag()
References: bsc#1061782
Git-commit: acf8ab9a85bfd6ead185a59c4cfe26b25d5a082f
Patch-Mainline: v4.14-rc1
We should be checking the return code from ses_recv_diag() to avoid
accessing invalid data.
Signed-off-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Hannes Reinecke <hare@suse.de>
---
drivers/scsi/ses.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/scsi/ses.c b/drivers/scsi/ses.c
index 8927f9f5..ab0dac9 100644
--- a/drivers/scsi/ses.c
+++ b/drivers/scsi/ses.c
@@ -179,7 +179,8 @@ static unsigned char *ses_get_page2_descriptor(struct enclosure_device *edev,
unsigned char *type_ptr = ses_dev->page1_types;
unsigned char *desc_ptr = ses_dev->page2 + 8;
- ses_recv_diag(sdev, 2, ses_dev->page2, ses_dev->page2_len);
+ if (ses_recv_diag(sdev, 2, ses_dev->page2, ses_dev->page2_len) < 0)
+ return NULL;
for (i = 0; i < ses_dev->page1_num_types; i++, type_ptr += 4) {
for (j = 0; j < type_ptr[1]; j++) {
--
1.8.5.6