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Patch "IB/mlx5: Assign send CQ and recv CQ of UMR QP" has been added to the 4.4-stable tree

PATCH [email protected] 1 participant 1 message Dec 12, 2017

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This is a note to let you know that I've just added the patch titled

IB/mlx5: Assign send CQ and recv CQ of UMR QP

to the 4.4-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
ib-mlx5-assign-send-cq-and-recv-cq-of-umr-qp.patch
and it can be found in the queue-4.4 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.

Quoted 1 line

From foo@baz Tue Dec 12 13:38:50 CET 2017

From: Majd Dibbiny <[email protected]>
Date: Mon, 30 Oct 2017 14:23:13 +0200
Subject: IB/mlx5: Assign send CQ and recv CQ of UMR QP

From: Majd Dibbiny <[email protected]>

[ Upstream commit 31fde034a8bd964a5c7c1a5663fc87a913158db2 ]

The UMR's QP is created by calling mlx5_ib_create_qp directly, and therefore the send CQ and the recv CQ on the ibqp weren't assigned.

Assign them right after calling the mlx5_ib_create_qp to assure that any access to those pointers will work as expected and won't crash the system as might happen as part of reset flow.

Fixes e126ba97dba9 ("mlx5: Add driver for Mellanox Connect-IB adapters")
---
 drivers/infiniband/hw/mlx5/main.c |    2 ++
 1 file changed, 2 insertions(+)
drivers/infiniband/hw/mlx5/main.c +2 -0
@@ -1123,6 +1123,8 @@ static int create_umr_res(struct mlx5_ib
 	qp->real_qp    = qp;
 	qp->uobject    = NULL;
 	qp->qp_type    = MLX5_IB_QPT_REG_UMR;
+	qp->send_cq    = init_attr->send_cq;
+	qp->recv_cq    = init_attr->recv_cq;
 
 	attr->qp_state = IB_QPS_INIT;
 	attr->port_num = 1;

Patches currently in stable-queue which might be from [email protected] are

queue-4.4/ib-mlx5-assign-send-cq-and-recv-cq-of-umr-qp.patch queue-4.4/ib-mlx4-increase-maximal-message-size-under-ud-qp.patch