linux-kernel - [PATCH 4.4 051/105] RDMA/mlx4: Discard unknown SQP work requests

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Date:   Sun,  1 Jul 2018 18:02:01 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Leon Romanovsky <leonro@...lanox.com>,
        Doug Ledford <dledford@...hat.com>
Subject: [PATCH 4.4 051/105] RDMA/mlx4: Discard unknown SQP work requests

4.4-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Leon Romanovsky <leonro@...lanox.com>

commit 6b1ca7ece15e94251d1d0d919f813943e4a58059 upstream.

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

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

---
 drivers/infiniband/hw/mlx4/mad.c |    1 -
 1 file changed, 1 deletion(-)

--- a/drivers/infiniband/hw/mlx4/mad.c
+++ b/drivers/infiniband/hw/mlx4/mad.c
@@ -1780,7 +1780,6 @@ static void mlx4_ib_sqp_comp_worker(stru
 					       "buf:%lld\n", wc.wr_id);
 				break;
 			default:
-				BUG_ON(1);
 				break;
 			}
 		} else  {