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

IB/srpt: Disable RDMA access by the initiator

to the 4.4-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git%3Ba=su...

The filename of the patch is: ib-srpt-disable-rdma-access-by-the-initiator.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 bec40c26041de61162f7be9d2ce548c756ce0f65 Mon Sep 17 00:00:00 2001

From: Bart Van Assche bart.vanassche@wdc.com Date: Wed, 3 Jan 2018 13:39:15 -0800 Subject: IB/srpt: Disable RDMA access by the initiator

From: Bart Van Assche bart.vanassche@wdc.com

commit bec40c26041de61162f7be9d2ce548c756ce0f65 upstream.

With the SRP protocol all RDMA operations are initiated by the target. Since no RDMA operations are initiated by the initiator, do not grant the initiator permission to submit RDMA reads or writes to the target.

Signed-off-by: Bart Van Assche bart.vanassche@wdc.com Signed-off-by: Jason Gunthorpe jgg@mellanox.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org

--- drivers/infiniband/ulp/srpt/ib_srpt.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-)

--- a/drivers/infiniband/ulp/srpt/ib_srpt.c +++ b/drivers/infiniband/ulp/srpt/ib_srpt.c @@ -957,8 +957,7 @@ static int srpt_init_ch_qp(struct srpt_r return -ENOMEM;

attr->qp_state = IB_QPS_INIT; - attr->qp_access_flags = IB_ACCESS_LOCAL_WRITE | IB_ACCESS_REMOTE_READ | - IB_ACCESS_REMOTE_WRITE; + attr->qp_access_flags = IB_ACCESS_LOCAL_WRITE; attr->port_num = ch->sport->port; attr->pkey_index = 0;

Patches currently in stable-queue which might be from bart.vanassche@wdc.com are

queue-4.4/ib-srpt-disable-rdma-access-by-the-initiator.patch