diff options
| author | Dan Carpenter <dan.carpenter@oracle.com> | 2020-09-28 12:05:56 +0300 |
|---|---|---|
| committer | Saeed Mahameed <saeedm@nvidia.com> | 2020-09-30 21:26:31 -0700 |
| commit | 7b2b16ee54cc08e268ddae59152cc99ec8275e1c (patch) | |
| tree | 07c23a164bd254de4eac8b0fb1949d36651ac761 /drivers/net/ethernet/mellanox/mlx5/core/en/tc_ct.c | |
| parent | 5efbe617888a4ba29e260d1233afbd9524608805 (diff) | |
| download | linux-7b2b16ee54cc08e268ddae59152cc99ec8275e1c.tar.bz2 | |
net/mlx5e: Fix a use after free on error in mlx5_tc_ct_shared_counter_get()
This code frees "shared_counter" and then dereferences on the next line
to get the error code.
Fixes: 1edae2335adf ("net/mlx5e: CT: Use the same counter for both directions")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
Diffstat (limited to 'drivers/net/ethernet/mellanox/mlx5/core/en/tc_ct.c')
| -rw-r--r-- | drivers/net/ethernet/mellanox/mlx5/core/en/tc_ct.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en/tc_ct.c b/drivers/net/ethernet/mellanox/mlx5/core/en/tc_ct.c index b5f8ed30047b..cea2070af9af 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en/tc_ct.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/en/tc_ct.c @@ -739,6 +739,7 @@ mlx5_tc_ct_shared_counter_get(struct mlx5_tc_ct_priv *ct_priv, struct mlx5_core_dev *dev = ct_priv->dev; struct mlx5_ct_entry *rev_entry; __be16 tmp_port; + int ret; /* get the reversed tuple */ tmp_port = rev_tuple.port.src; @@ -778,8 +779,9 @@ mlx5_tc_ct_shared_counter_get(struct mlx5_tc_ct_priv *ct_priv, shared_counter->counter = mlx5_fc_create(dev, true); if (IS_ERR(shared_counter->counter)) { ct_dbg("Failed to create counter for ct entry"); + ret = PTR_ERR(shared_counter->counter); kfree(shared_counter); - return ERR_PTR(PTR_ERR(shared_counter->counter)); + return ERR_PTR(ret); } refcount_set(&shared_counter->refcount, 1); |