From: Kamal Heib <kamalheib1@xxxxxxxxx>
[ Upstream commit 6d8285e604e0221b67bd5db736921b7ddce37d00 ]
Before create CQ, make sure that the requested number of CQEs is in the
supported range.
Fixes: cfdda9d76436 ("RDMA/cxgb4: Add driver for Chelsio T4 RNIC")
Link: https://lore.kernel.org/r/20201108132007.67537-1-kamalheib1@xxxxxxxxx
Signed-off-by: Kamal Heib <kamalheib1@xxxxxxxxx>
Signed-off-by: Jason Gunthorpe <jgg@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/infiniband/hw/cxgb4/cq.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/infiniband/hw/cxgb4/cq.c b/drivers/infiniband/hw/cxgb4/cq.c
index a856371bbe58c..501f496f4e1a1 100644
--- a/drivers/infiniband/hw/cxgb4/cq.c
+++ b/drivers/infiniband/hw/cxgb4/cq.c
@@ -893,6 +893,9 @@ struct ib_cq *c4iw_create_cq(struct ib_device *ibdev,
rhp = to_c4iw_dev(ibdev);
+ if (entries < 1 || entries > ibdev->attrs.max_cqe)
+ return -EINVAL;
+
if (vector >= rhp->rdev.lldi.nciq)
return ERR_PTR(-EINVAL);
--
2.27.0
