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    Subject[PATCH 4.9 056/145] RDMA/cma: Make sure that PSN is not over max allowed
    Date
    4.9-stable review patch.  If anyone has any objections, please let me know.

    ------------------

    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
    @@ -744,6 +744,7 @@ 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;
    }

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