From 5dee0eaa3a3c1f6b8e960038384e16ae730d201e Mon Sep 17 00:00:00 2001

From: Kamal Heib <kamalheib1@gmail.com>

Date: Thu, 24 Dec 2020 16:11:16 +0200

Subject: [PATCH] cxgb4: Fix reported error code from create_cq

[ Upstream commit 8f85e04863e379d798c88a68eee5e34341961eff ]

Report EINVAL when trying to call c4iw_create_cq() with number of CQEs

out of the supported range.

Fixes: d6e6ae69be5e ("Add libcxgb4 files.")

Signed-off-by: Kamal Heib <kamalheib1@gmail.com>

Signed-off-by: Nicolas Morey-Chaisemartin <nmoreychaisemartin@suse.com>

---

 providers/cxgb4/verbs.c | 5 +++++

 1 file changed, 5 insertions(+)

diff --git a/providers/cxgb4/verbs.c b/providers/cxgb4/verbs.c

index 32bae6906a15..d0e366f0fca4 100644

--- a/providers/cxgb4/verbs.c

+++ b/providers/cxgb4/verbs.c

@@ -171,6 +171,11 @@ struct ibv_cq *c4iw_create_cq(struct ibv_context *context, int cqe,

 	struct c4iw_dev *dev = to_c4iw_dev(context->device);

 	int ret;

+	if (!cqe || cqe > T4_MAX_CQ_DEPTH) {

+		errno = EINVAL;

+		return NULL;

+	}

+

 	chp = calloc(1, sizeof *chp);

 	if (!chp) {

 		return NULL;

-- 

2.25.4