From 48ec7014c56e5eb2fbf6f479896143622d834f3b Mon Sep 17 00:00:00 2001 From: Wenwen Wang Date: Mon, 12 Aug 2019 14:11:35 -0500 Subject: [PATCH] net/mlx4_en: fix a memory leak bug 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: 4931c6ef04b4 ("net/mlx4_en: Optimized single ring steering") Signed-off-by: Wenwen Wang Reviewed-by: Tariq Toukan Signed-off-by: Jakub Kicinski --- drivers/net/ethernet/mellanox/mlx4/en_rx.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/net/ethernet/mellanox/mlx4/en_rx.c b/drivers/net/ethernet/mellanox/mlx4/en_rx.c index 6c01314e87b0..db3552f2d087 100644 --- a/drivers/net/ethernet/mellanox/mlx4/en_rx.c +++ b/drivers/net/ethernet/mellanox/mlx4/en_rx.c @@ -1187,7 +1187,7 @@ 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; @@ -1241,6 +1241,7 @@ indir_err: 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: