From 6d8285e604e0221b67bd5db736921b7ddce37d00 Mon Sep 17 00:00:00 2001
From: Kamal Heib <kamalheib1@gmail.com>
Date: Sun, 8 Nov 2020 15:20:07 +0200
Subject: [PATCH 1/1] RDMA/cxgb4: Validate the number of CQEs
Git-commit: 6d8285e604e0221b67bd5db736921b7ddce37d00
Patch-mainline: v5.11
References: git-fixes
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@gmail.com
Signed-off-by: Kamal Heib <kamalheib1@gmail.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Acked-by: Nicolas Morey-Chaisemartin <nmoreychaisemartin@suse.com>
---
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 2cb65be24770..44c2416588d4 100644
--- a/drivers/infiniband/hw/cxgb4/cq.c
+++ b/drivers/infiniband/hw/cxgb4/cq.c
@@ -1008,6 +1008,9 @@ int c4iw_create_cq(struct ib_cq *ibcq, const struct ib_cq_init_attr *attr,
if (attr->flags)
return -EINVAL;
+ if (entries < 1 || entries > ibdev->attrs.max_cqe)
+ return -EINVAL;
+
if (vector >= rhp->rdev.lldi.nciq)
return -EINVAL;
--
2.31.1.5.g533053588dc3