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From: Kamal Heib <kamalheib1@gmail.com>
To: linux-rdma@vger.kernel.org
Cc: Jason Gunthorpe <jgg@ziepe.ca>,
	Doug Ledford <dledford@redhat.com>,
	Potnuri Bharat Teja <bharat@chelsio.com>,
	Kamal Heib <kamalheib1@gmail.com>
Subject: [PATCH] RDMA/cxgb4: Validate the number of CQEs
Date: Sun,  8 Nov 2020 15:20:07 +0200	[thread overview]
Message-ID: <20201108132007.67537-1-kamalheib1@gmail.com> (raw)

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")
Signed-off-by: Kamal Heib <kamalheib1@gmail.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 -EOPNOTSUPP;
 
+	if (entries < 1 || entries > ibdev->attrs.max_cqe)
+		return -EINVAL;
+
 	if (vector >= rhp->rdev.lldi.nciq)
 		return -EINVAL;
 
-- 
2.26.2


             reply	other threads:[~2020-11-08 13:22 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-11-08 13:20 Kamal Heib [this message]
2020-11-23 20:31 ` [PATCH] RDMA/cxgb4: Validate the number of CQEs Jason Gunthorpe

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