提交 e7879299 编写于 作者: W Wenwen Wang 提交者: Xie XiuQi

net/mlx4_en: fix a memory leak bug

[ Upstream commit 48ec7014c56e5eb2fbf6f479896143622d834f3b ]

In mlx4_en_config_rss_steer(), 'rss_map->indir_qp' is allocated through
kzalloc(). After that, mlx4_qp_alloc() is invoked to configure RSS
indirection. However, if mlx4_qp_alloc() fails, the allocated
'rss_map->indir_qp' is not deallocated, leading to a memory leak bug.

To fix the above issue, add the 'qp_alloc_err' label to free
'rss_map->indir_qp'.

Fixes: 4931c6ef ("net/mlx4_en: Optimized single ring steering")
Signed-off-by: NWenwen Wang <wenwen@cs.uga.edu>
Reviewed-by: NTariq Toukan <tariqt@mellanox.com>
Signed-off-by: NJakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: NYang Yingliang <yangyingliang@huawei.com>
上级 57ca17d5
......@@ -1190,7 +1190,7 @@ int mlx4_en_config_rss_steer(struct mlx4_en_priv *priv)
err = mlx4_qp_alloc(mdev->dev, priv->base_qpn, rss_map->indir_qp);
if (err) {
en_err(priv, "Failed to allocate RSS indirection QP\n");
goto rss_err;
goto qp_alloc_err;
}
rss_map->indir_qp->event = mlx4_en_sqp_event;
......@@ -1244,6 +1244,7 @@ int mlx4_en_config_rss_steer(struct mlx4_en_priv *priv)
MLX4_QP_STATE_RST, NULL, 0, 0, rss_map->indir_qp);
mlx4_qp_remove(mdev->dev, rss_map->indir_qp);
mlx4_qp_free(mdev->dev, rss_map->indir_qp);
qp_alloc_err:
kfree(rss_map->indir_qp);
rss_map->indir_qp = NULL;
rss_err:
......
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