From: Alexandr Sapozhnikov <alsp705@xxxxxxxxx>
After having been compared to NULL value at 3w-sas.c:322,
pointer 'srb' is passed as 1st parameter in call to
function 'scsi_sg_count' at 3w-sas.c:336, where it is dereferenced.
Found by Linux Verification Center (linuxtesting.org) with SVACE.
Signed-off-by: Alexandr Sapozhnikov <alsp705@xxxxxxxxx>
---
drivers/scsi/3w-sas.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/scsi/3w-sas.c b/drivers/scsi/3w-sas.c
index 3ebe661..674c130 100644
--- a/drivers/scsi/3w-sas.c
+++ b/drivers/scsi/3w-sas.c
@@ -333,7 +333,7 @@ static int twl_scsiop_execute_scsi(TW_Device_Extension *tw_dev, int request_id,
if (!sglistarg) {
/* Map sglist from scsi layer to cmd packet */
- if (scsi_sg_count(srb)) {
+ if (srb && scsi_sg_count(srb)) {
sg_count = scsi_dma_map(srb);
if (sg_count <= 0)
goto out;
--
2.5.3
