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net/mlx5: Fix leak upon failure of rule creation 

When creation of a new rule that requires allocation of an FTE fails,
need to call to tree_put_node on the FTE in order to release its'
resource.

Fixes: cefc23554f ("net/mlx5: Fix FTE cleanup")
Signed-off-by: Maor Gottlieb <maorg@nvidia.com>
Reviewed-by: Alaa Hleihel <alaa@nvidia.com>
Reviewed-by: Mark Bloch <mbloch@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
This commit is contained in:
Maor Gottlieb 2021-01-20 17:41:18 +02:00 committed by Saeed Mahameed
parent ed5e83a3c0
commit a5bfe6b467
1 changed files with 5 additions and 0 deletions
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5
drivers/net/ethernet/mellanox/mlx5/core/fs_core.c
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@ -1760,6 +1760,7 @@ try_add_to_existing_fg(struct mlx5_flow_table *ft,
if (!fte_tmp)
continue;
rule = add_rule_fg(g, spec, flow_act, dest, dest_num, fte_tmp);
/* No error check needed here, because insert_fte() is not called */
up_write_ref_node(&fte_tmp->node, false);
tree_put_node(&fte_tmp->node, false);
kmem_cache_free(steering->ftes_cache, fte);
@ -1812,6 +1813,8 @@ try_add_to_existing_fg(struct mlx5_flow_table *ft,
up_write_ref_node(&g->node, false);
rule = add_rule_fg(g, spec, flow_act, dest, dest_num, fte);
up_write_ref_node(&fte->node, false);
if (IS_ERR(rule))
tree_put_node(&fte->node, false);
return rule;
}
rule = ERR_PTR(-ENOENT);
@ -1910,6 +1913,8 @@ _mlx5_add_flow_rules(struct mlx5_flow_table *ft,
up_write_ref_node(&g->node, false);
rule = add_rule_fg(g, spec, flow_act, dest, dest_num, fte);
up_write_ref_node(&fte->node, false);
if (IS_ERR(rule))
tree_put_node(&fte->node, false);
tree_put_node(&g->node, false);
return rule;