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[v2,14/17] scsi_transport_sas, sas_tlr_supported(): Check kzalloc() return value

Message ID 20170825204643.25043-15-bart.vanassche@wdc.com (mailing list archive)
State Accepted
Headers show

Commit Message

Bart Van Assche Aug. 25, 2017, 8:46 p.m. UTC 
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>
---
 drivers/scsi/scsi_transport_sas.c | 3 +++
 1 file changed, 3 insertions(+)
diff mbox

Patch

diff --git a/drivers/scsi/scsi_transport_sas.c b/drivers/scsi/scsi_transport_sas.c
index c5cde4ecef8e..6c05fd9a0be5 100644
--- a/drivers/scsi/scsi_transport_sas.c
+++ b/drivers/scsi/scsi_transport_sas.c
@@ -423,6 +423,9 @@  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;