Patch "RDMA/cma: Make sure that PSN is not over max allowed" has been added to the 4.4-stable tree

Patch "RDMA/cma: Make sure that PSN is not over max allowed" has been added to the 4.4-stable tree

[gregkh]

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

    RDMA/cma: Make sure that PSN is not over max allowed

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:
     rdma-cma-make-sure-that-psn-is-not-over-max-allowed.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 <stable@vger.kernel.org> know about it.


>From foo@baz Fri Feb 23 11:58:50 CET 2018
From: Moni Shoua <monis@mellanox.com>
Date: Sun, 26 Nov 2017 20:23:54 +0200
Subject: RDMA/cma: Make sure that PSN is not over max allowed

From: Moni Shoua <monis@mellanox.com>


[ Upstream commit 23a9cd2ad90543e9da3786878d2b2729c095439d ]

This patch limits the initial value for PSN to 24 bits as
spec requires.

Signed-off-by: Moni Shoua <monis@mellanox.com>
Signed-off-by: Mukesh Kacker <mukesh.kacker@oracle.com>
Signed-off-by: Daniel Jurgens <danielj@mellanox.com>
Reviewed-by: Parav Pandit <parav@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/infiniband/core/cma.c |    1 +
 1 file changed, 1 insertion(+)

--- a/drivers/infiniband/core/cma.c
+++ b/drivers/infiniband/core/cma.c
@@ -626,6 +626,7 @@ struct rdma_cm_id *rdma_create_id(struct
 	INIT_LIST_HEAD(&id_priv->mc_list);
 	get_random_bytes(&id_priv->seq_num, sizeof id_priv->seq_num);
 	id_priv->id.route.addr.dev_addr.net = get_net(net);
+	id_priv->seq_num &= 0x00ffffff;
 
 	return &id_priv->id;
 }


Patches currently in stable-queue which might be from monis@mellanox.com are

queue-4.4/rdma-cma-make-sure-that-psn-is-not-over-max-allowed.patch