[PATCH 4.9 038/271] IB/usnic: Fix out of bounds index check in query pkey

From: Greg Kroah-Hartman
Date: Tue Jan 28 2020 - 09:40:13 EST


From: Gal Pressman <galpress@xxxxxxxxxx>

[ Upstream commit 4959d5da5737dd804255c75b8cea0a2929ce279a ]

The pkey table size is one element, index should be tested for > 0 instead
of > 1.

Fixes: e3cf00d0a87f ("IB/usnic: Add Cisco VIC low-level hardware driver")
Signed-off-by: Gal Pressman <galpress@xxxxxxxxxx>
Acked-by: Parvi Kaustubhi <pkaustub@xxxxxxxxx>
Signed-off-by: Jason Gunthorpe <jgg@xxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/infiniband/hw/usnic/usnic_ib_verbs.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/infiniband/hw/usnic/usnic_ib_verbs.c b/drivers/infiniband/hw/usnic/usnic_ib_verbs.c
index a5bfbba6bbac0..cacb720f44a02 100644
--- a/drivers/infiniband/hw/usnic/usnic_ib_verbs.c
+++ b/drivers/infiniband/hw/usnic/usnic_ib_verbs.c
@@ -425,7 +425,7 @@ int usnic_ib_query_gid(struct ib_device *ibdev, u8 port, int index,
int usnic_ib_query_pkey(struct ib_device *ibdev, u8 port, u16 index,
u16 *pkey)
{
- if (index > 1)
+ if (index > 0)
return -EINVAL;

*pkey = 0xffff;
--
2.20.1