@@ -380,7 +380,7 @@ struct mlxsw_afa_block *mlxsw_afa_block_create(struct mlxsw_afa *mlxsw_afa)
block = kzalloc(sizeof(*block), GFP_KERNEL);
if (!block)
- return NULL;
+ return ERR_PTR(-ENOMEM);
INIT_LIST_HEAD(&block->resource_list);
block->afa = mlxsw_afa;
@@ -408,7 +408,7 @@ struct mlxsw_afa_block *mlxsw_afa_block_create(struct mlxsw_afa *mlxsw_afa)
mlxsw_afa_set_destroy(block->first_set);
err_first_set_create:
kfree(block);
- return NULL;
+ return ERR_PTR(-ENOMEM);
}
EXPORT_SYMBOL(mlxsw_afa_block_create);
@@ -464,7 +464,7 @@ mlxsw_sp_acl_rulei_create(struct mlxsw_sp_acl *acl,
rulei = kzalloc(sizeof(*rulei), GFP_KERNEL);
if (!rulei)
- return NULL;
+ return ERR_PTR(-ENOMEM);
if (afa_block) {
rulei->act_block = afa_block;
@@ -88,8 +88,8 @@ static int mlxsw_sp2_acl_tcam_init(struct mlxsw_sp *mlxsw_sp, void *priv,
* to be written using PEFA register to all indexes for all regions.
*/
afa_block = mlxsw_afa_block_create(mlxsw_sp->afa);
- if (!afa_block) {
- err = -ENOMEM;
+ if (IS_ERR(afa_block)) {
+ err = PTR_ERR(afa_block);
goto err_afa_block;
}
err = mlxsw_afa_block_continue(afa_block);
@@ -199,8 +199,8 @@ mlxsw_sp_mr_tcam_afa_block_create(struct mlxsw_sp *mlxsw_sp,
int err;
afa_block = mlxsw_afa_block_create(mlxsw_sp->afa);
- if (!afa_block)
- return ERR_PTR(-ENOMEM);
+ if (IS_ERR(afa_block))
+ return afa_block;
err = mlxsw_afa_block_append_allocated_counter(afa_block,
counter_index);
The mlxsw_sp_acl_rulei_create() function is supposed to return an error pointer from mlxsw_afa_block_create(). The problem is that these functions both return NULL instead of error pointers. Half the callers expect NULL and half expect error pointers so it could lead to a NULL dereference on failure. This patch changes both of them to return error pointers and changes all the callers which checked for NULL to check for IS_ERR() instead. Fixes: 4cda7d8d7098 ("mlxsw: core: Introduce flexible actions support") Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> --- drivers/net/ethernet/mellanox/mlxsw/core_acl_flex_actions.c | 4 ++-- drivers/net/ethernet/mellanox/mlxsw/spectrum_acl.c | 2 +- drivers/net/ethernet/mellanox/mlxsw/spectrum2_acl_tcam.c | 4 ++-- drivers/net/ethernet/mellanox/mlxsw/spectrum_mr_tcam.c | 4 ++-- 4 files changed, 7 insertions(+), 7 deletions(-)