From: Wenwen Wang <wenwen@cs.uga.edu>
To: Wenwen Wang <wenwen@cs.uga.edu>
Cc: Saeed Mahameed <saeedm@mellanox.com>,
Leon Romanovsky <leon@kernel.org>,
"David S. Miller" <davem@davemloft.net>,
netdev@vger.kernel.org (open list:MELLANOX MLX5 core VPI driver),
linux-rdma@vger.kernel.org (open list:MELLANOX MLX5 core VPI
driver), linux-kernel@vger.kernel.org (open list)
Subject: [PATCH] net/mlx5: Fix a memory leak bug
Date: Tue, 13 Aug 2019 03:21:35 -0500 [thread overview]
Message-ID: <1565684495-2454-1-git-send-email-wenwen@cs.uga.edu> (raw)
In mlx5_cmd_invoke(), 'ent' is allocated through kzalloc() in alloc_cmd().
After the work is queued, wait_func() is invoked to wait the completion of
the work. If wait_func() returns -ETIMEDOUT, the following execution will
be terminated. However, the allocated 'ent' is not deallocated on this
program path, leading to a memory leak bug.
To fix the above issue, free 'ent' before returning the error.
Signed-off-by: Wenwen Wang <wenwen@cs.uga.edu>
---
drivers/net/ethernet/mellanox/mlx5/core/cmd.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/cmd.c b/drivers/net/ethernet/mellanox/mlx5/core/cmd.c
index 8cdd7e6..90cdb9a 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/cmd.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/cmd.c
@@ -1036,7 +1036,7 @@ static int mlx5_cmd_invoke(struct mlx5_core_dev *dev, struct mlx5_cmd_msg *in,
err = wait_func(dev, ent);
if (err == -ETIMEDOUT)
- goto out;
+ goto out_free;
ds = ent->ts2 - ent->ts1;
op = MLX5_GET(mbox_in, in->first.data, opcode);
--
2.7.4
next reply other threads:[~2019-08-13 8:21 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-08-13 8:21 Wenwen Wang [this message]
2019-08-19 13:00 ` [PATCH] net/mlx5: Fix a memory leak bug Moshe Shemesh
2019-08-20 21:00 ` Saeed Mahameed
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