Patch "rdma_cm: fail iwarp accepts w/o connection params" has been added to the 4.4-stable tree

Patch "rdma_cm: fail iwarp accepts w/o connection params" 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_cm: fail iwarp accepts w/o connection params

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_cm-fail-iwarp-accepts-w-o-connection-params.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 f2625f7db4dd0bbd16a9c7d2950e7621f9aa57ad Mon Sep 17 00:00:00 2001
From: Steve Wise <swise@opengridcomputing.com>
Date: Tue, 21 Feb 2017 11:21:57 -0800
Subject: rdma_cm: fail iwarp accepts w/o connection params

From: Steve Wise <swise@opengridcomputing.com>

commit f2625f7db4dd0bbd16a9c7d2950e7621f9aa57ad upstream.

cma_accept_iw() needs to return an error if conn_params is NULL.
Since this is coming from user space, we can crash.

Reported-by: Shaobo He <shaobo@cs.utah.edu>
Acked-by: Sean Hefty <sean.hefty@intel.com>
Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/infiniband/core/cma.c |    3 +++
 1 file changed, 3 insertions(+)

--- a/drivers/infiniband/core/cma.c
+++ b/drivers/infiniband/core/cma.c
@@ -3349,6 +3349,9 @@ static int cma_accept_iw(struct rdma_id_
 	struct iw_cm_conn_param iw_param;
 	int ret;
 
+	if (!conn_param)
+		return -EINVAL;
+
 	ret = cma_modify_qp_rtr(id_priv, conn_param);
 	if (ret)
 		return ret;


Patches currently in stable-queue which might be from swise@opengridcomputing.com are

queue-4.4/rdma_cm-fail-iwarp-accepts-w-o-connection-params.patch