From: Roland Dreier <rolandd@cisco.com>
Date: Sat, 19 May 2007 15:51:58 +0000 (-0700)
Subject: IB/mlx4: Fix check of opcode in mlx4_ib_post_send()
X-Git-Tag: firefly_0821_release~28982^2~5
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=59b0ed121297b57abb2352bdc8313959e7cb5635;p=firefly-linux-kernel-4.4.55.git

IB/mlx4: Fix check of opcode in mlx4_ib_post_send()

wr->opcode is invalid if it's >= ARRAY_SIZE(mlx4_ib_opcode), not just
strictly >.

This was spotted by the Coverity checker (CID 1643).

Signed-off-by: Roland Dreier <rolandd@cisco.com>
---

diff --git a/drivers/infiniband/hw/mlx4/qp.c b/drivers/infiniband/hw/mlx4/qp.c
index bd28af5753d1..5706f988e2ec 100644
--- a/drivers/infiniband/hw/mlx4/qp.c
+++ b/drivers/infiniband/hw/mlx4/qp.c
@@ -1238,7 +1238,7 @@ int mlx4_ib_post_send(struct ib_qp *ibqp, struct ib_send_wr *wr,
 		 */
 		wmb();
 
-		if (wr->opcode < 0 || wr->opcode > ARRAY_SIZE(mlx4_ib_opcode)) {
+		if (wr->opcode < 0 || wr->opcode >= ARRAY_SIZE(mlx4_ib_opcode)) {
 			err = -EINVAL;
 			goto out;
 		}