From: Leon Romanovsky <leonro@mellanox.com>
Date: Tue, 29 May 2018 11:56:14 +0000 (+0300)
Subject: RDMA/mlx4: Discard unknown SQP work requests
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=786c8d79f34f0c54d3f9028e994e397207ae769c;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git

RDMA/mlx4: Discard unknown SQP work requests

commit 6b1ca7ece15e94251d1d0d919f813943e4a58059 upstream.

There is no need to crash the machine if unknown work request was
received in SQP MAD.

Cc: <stable@vger.kernel.org> # 3.6
Fixes: 37bfc7c1e83f ("IB/mlx4: SR-IOV multiplex and demultiplex MADs")
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/infiniband/hw/mlx4/mad.c b/drivers/infiniband/hw/mlx4/mad.c
index 0793a21d76f4..d604b3d5aa3e 100644
--- a/drivers/infiniband/hw/mlx4/mad.c
+++ b/drivers/infiniband/hw/mlx4/mad.c
@@ -1934,7 +1934,6 @@ static void mlx4_ib_sqp_comp_worker(struct work_struct *work)
 					       "buf:%lld\n", wc.wr_id);
 				break;
 			default:
-				BUG_ON(1);
 				break;
 			}
 		} else  {