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scsi: scsi_transport_sas: Check kzalloc() return value 

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>
This commit is contained in:
Bart Van Assche 2017-08-25 13:46:40 -07:00 committed by Martin K. Petersen
parent e656f0d07a
commit e1779b4ff5
1 changed files with 3 additions and 0 deletions
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3
drivers/scsi/scsi_transport_sas.c
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@ -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;