Patch "IB/mlx5: Fix NULL pointer dereference on debug print" has been added to the 4.8-stable tree

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

IB/mlx5: Fix NULL pointer dereference on debug print

to the 4.8-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:
ib-mlx5-fix-null-pointer-dereference-on-debug-print.patch
and it can be found in the queue-4.8 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.

From: Eli Cohen <[email protected]>
Date: Thu, 27 Oct 2016 16:36:46 +0300
Subject: IB/mlx5: Fix NULL pointer dereference on debug print

From: Eli Cohen <[email protected]>

commit a1ab8402d15d2305d2315d96ec3294bfdf16587e upstream.

For XRC QP CQs may not exist. Check before attempting dereference.

---
 drivers/infiniband/hw/mlx5/qp.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

@@ -2037,8 +2037,8 @@ struct ib_qp *mlx5_ib_create_qp(struct i
 
 		mlx5_ib_dbg(dev, "ib qpnum 0x%x, mlx qpn 0x%x, rcqn 0x%x, scqn 0x%x\n",
 			    qp->ibqp.qp_num, qp->trans_qp.base.mqp.qpn,
-			    to_mcq(init_attr->recv_cq)->mcq.cqn,
-			    to_mcq(init_attr->send_cq)->mcq.cqn);
+			    init_attr->recv_cq ? to_mcq(init_attr->recv_cq)->mcq.cqn : -1,
+			    init_attr->send_cq ? to_mcq(init_attr->send_cq)->mcq.cqn : -1);
 
 		qp->trans_qp.xrcdn = xrcdn;
 

Patches currently in stable-queue which might be from [email protected] are

queue-4.8/ib-mlx5-fix-fatal-error-dispatching.patch queue-4.8/ib-mlx5-fix-null-pointer-dereference-on-debug-print.patch