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| author | Dan Carpenter <dan.carpenter@oracle.com> | 2020-04-22 12:36:41 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2020-04-23 12:34:43 -0700 |
| commit | c391eb8366ae052d571bb2841f1ccb4d39f3ceb8 (patch) | |
| tree | bcb1781de82c335fe3948a179f026614adfd2772 /drivers | |
| parent | 829e7573c45a97e0f6a923a8e6e4589c26a26df2 (diff) | |
| download | linux-c391eb8366ae052d571bb2841f1ccb4d39f3ceb8.tar.bz2 | |
mlxsw: Fix some IS_ERR() vs NULL bugs
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>
Reviewed-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers')
4 files changed, 7 insertions, 7 deletions
diff --git a/drivers/net/ethernet/mellanox/mlxsw/core_acl_flex_actions.c b/drivers/net/ethernet/mellanox/mlxsw/core_acl_flex_actions.c index 70a104e728f6..c3d04319ff44 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/core_acl_flex_actions.c +++ b/drivers/net/ethernet/mellanox/mlxsw/core_acl_flex_actions.c @@ -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 @@ err_second_set_create: 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); diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum2_acl_tcam.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum2_acl_tcam.c index 6c66a0f1b79e..ad69913f19c1 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/spectrum2_acl_tcam.c +++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum2_acl_tcam.c @@ -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); diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_acl.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_acl.c index 67ee880a8727..01cff711bbd2 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_acl.c +++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_acl.c @@ -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; diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_mr_tcam.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_mr_tcam.c index 346f4a5fe053..221aa6a474eb 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_mr_tcam.c +++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_mr_tcam.c @@ -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); |