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 4.9-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-4.9 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. >From f2625f7db4dd0bbd16a9c7d2950e7621f9aa57ad Mon Sep 17 00:00:00 2001 From: Steve Wise <swise@xxxxxxxxxxxxxxxxxxxxx> Date: Tue, 21 Feb 2017 11:21:57 -0800 Subject: rdma_cm: fail iwarp accepts w/o connection params From: Steve Wise <swise@xxxxxxxxxxxxxxxxxxxxx> 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@xxxxxxxxxxx> Acked-by: Sean Hefty <sean.hefty@xxxxxxxxx> Signed-off-by: Steve Wise <swise@xxxxxxxxxxxxxxxxxxxxx> Signed-off-by: Doug Ledford <dledford@xxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- drivers/infiniband/core/cma.c | 3 +++ 1 file changed, 3 insertions(+) --- a/drivers/infiniband/core/cma.c +++ b/drivers/infiniband/core/cma.c @@ -3540,6 +3540,9 @@ 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@xxxxxxxxxxxxxxxxxxxxx are queue-4.9/rdma_cm-fail-iwarp-accepts-w-o-connection-params.patch queue-4.9/xprtrdma-reduce-required-number-of-send-sges.patch