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authorEli Cohen <eli@mellanox.com>2016-10-27 16:36:46 +0300
committerDoug Ledford <dledford@redhat.com>2016-11-16 20:03:44 -0500
commita1ab8402d15d2305d2315d96ec3294bfdf16587e (patch)
treede32b4419cf2121d2a3d66d6667ef37f65d54d95 /drivers
parentdbaaff2a2caa03d472b5cc53a3fbfd415c97dc26 (diff)
IB/mlx5: Fix NULL pointer dereference on debug print
For XRC QP CQs may not exist. Check before attempting dereference. Fixes: e126ba97dba9 ('mlx5: Add driver for Mellanox Connect-IB adapters') Signed-off-by: Eli Cohen <eli@mellanox.com> Signed-off-by: Maor Gottlieb <maorg@mellanox.com> Reviewed-by: Yishai Hadas <yishaih@mellanox.com> Signed-off-by: Leon Romanovsky <leon@kernel.org> Signed-off-by: Doug Ledford <dledford@redhat.com>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/infiniband/hw/mlx5/qp.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/infiniband/hw/mlx5/qp.c b/drivers/infiniband/hw/mlx5/qp.c
index 2be0d06b27dc..59c4c89460d1 100644
--- a/drivers/infiniband/hw/mlx5/qp.c
+++ b/drivers/infiniband/hw/mlx5/qp.c
@@ -2052,8 +2052,8 @@ struct ib_qp *mlx5_ib_create_qp(struct ib_pd *pd,
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;