linux-kernel - [PATCH 4.19 194/639] RDMA/mlx5: Fix memory leak in case we fail to add an IB device

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Date:   Fri, 24 Jan 2020 10:26:04 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Mark Bloch <markb@...lanox.com>,
        Bodong Wang <bodong@...lanox.com>,
        Håkon Bugge <haakon.bugge@...cle.com>,
        Leon Romanovsky <leonro@...lanox.com>,
        Jason Gunthorpe <jgg@...lanox.com>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 4.19 194/639] RDMA/mlx5: Fix memory leak in case we fail to add an IB device

From: Mark Bloch <markb@...lanox.com>

[ Upstream commit fc9e4477f924e84d7798f7a1d41401d699de1219 ]

Make sure the IB device is freed on failure.

Fixes: b5ca15ad7e61 ("IB/mlx5: Add proper representors support")
Signed-off-by: Mark Bloch <markb@...lanox.com>
Reviewed-by: Bodong Wang <bodong@...lanox.com>
Reviewed-by: Håkon Bugge <haakon.bugge@...cle.com>
Signed-off-by: Leon Romanovsky <leonro@...lanox.com>
Signed-off-by: Jason Gunthorpe <jgg@...lanox.com>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/infiniband/hw/mlx5/ib_rep.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/infiniband/hw/mlx5/ib_rep.c b/drivers/infiniband/hw/mlx5/ib_rep.c
index 35a0e04c38f28..b841589c27c9c 100644
--- a/drivers/infiniband/hw/mlx5/ib_rep.c
+++ b/drivers/infiniband/hw/mlx5/ib_rep.c
@@ -69,8 +69,10 @@ mlx5_ib_vport_rep_load(struct mlx5_core_dev *dev, struct mlx5_eswitch_rep *rep)
 	ibdev->mdev = dev;
 	ibdev->num_ports = max(MLX5_CAP_GEN(dev, num_ports),
 			       MLX5_CAP_GEN(dev, num_vhca_ports));
-	if (!__mlx5_ib_add(ibdev, &rep_profile))
+	if (!__mlx5_ib_add(ibdev, &rep_profile)) {
+		ib_dealloc_device(&ibdev->ib_dev);
 		return -EINVAL;
+	}
 
 	rep->rep_if[REP_IB].priv = ibdev;
 
-- 
2.20.1