| Message ID | 20210927033457.1020967-2-shjy180909@gmail.com (mailing list archive) |
|---|---|
| State | Not Applicable |
| Headers | show |
| Series | check return value of rhashtable_init in mlx5e, ipv6, mac80211 | expand |
On 2021-09-27 6:34 AM, MichelleJin wrote: > When rhashtable_init() fails, it returns -EINVAL. > However, since error return value of rhashtable_init is not checked, > it can cause use of uninitialized pointers. > So, fix unhandled errors of rhashtable_init. > > Signed-off-by: MichelleJin <shjy180909@gmail.com> > --- > > v1->v2: > - change commit message > - fix unneeded destroying of ht > v2->v3: > - nothing changed > v3->v4: > - nothing changed > > drivers/net/ethernet/mellanox/mlx5/core/en/tc_ct.c | 14 +++++++++++--- > 1 file changed, 11 insertions(+), 3 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 6c949abcd2e1..225748a9e52a 100644 > --- a/drivers/net/ethernet/mellanox/mlx5/core/en/tc_ct.c > +++ b/drivers/net/ethernet/mellanox/mlx5/core/en/tc_ct.c > @@ -2127,12 +2127,20 @@ mlx5_tc_ct_init(struct mlx5e_priv *priv, struct mlx5_fs_chains *chains, > > ct_priv->post_act = post_act; > mutex_init(&ct_priv->control_lock); > - rhashtable_init(&ct_priv->zone_ht, &zone_params); > - rhashtable_init(&ct_priv->ct_tuples_ht, &tuples_ht_params); > - rhashtable_init(&ct_priv->ct_tuples_nat_ht, &tuples_nat_ht_params); > + if (rhashtable_init(&ct_priv->zone_ht, &zone_params)) > + goto err_ct_zone_ht; > + if (rhashtable_init(&ct_priv->ct_tuples_ht, &tuples_ht_params)) > + goto err_ct_tuples_ht; > + if (rhashtable_init(&ct_priv->ct_tuples_nat_ht, &tuples_nat_ht_params)) > + goto err_ct_tuples_nat_ht; > > return ct_priv; > > +err_ct_tuples_nat_ht: > + rhashtable_destroy(&ct_priv->ct_tuples_ht); > +err_ct_tuples_ht: > + rhashtable_destroy(&ct_priv->zone_ht); > +err_ct_zone_ht: > err_ct_nat_tbl: > mlx5_chains_destroy_global_table(chains, ct_priv->ct); > err_ct_tbl: > Reviewed-by: Roi Dayan <roid@nvidia.com>
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 6c949abcd2e1..225748a9e52a 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en/tc_ct.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/en/tc_ct.c @@ -2127,12 +2127,20 @@ mlx5_tc_ct_init(struct mlx5e_priv *priv, struct mlx5_fs_chains *chains, ct_priv->post_act = post_act; mutex_init(&ct_priv->control_lock); - rhashtable_init(&ct_priv->zone_ht, &zone_params); - rhashtable_init(&ct_priv->ct_tuples_ht, &tuples_ht_params); - rhashtable_init(&ct_priv->ct_tuples_nat_ht, &tuples_nat_ht_params); + if (rhashtable_init(&ct_priv->zone_ht, &zone_params)) + goto err_ct_zone_ht; + if (rhashtable_init(&ct_priv->ct_tuples_ht, &tuples_ht_params)) + goto err_ct_tuples_ht; + if (rhashtable_init(&ct_priv->ct_tuples_nat_ht, &tuples_nat_ht_params)) + goto err_ct_tuples_nat_ht; return ct_priv; +err_ct_tuples_nat_ht: + rhashtable_destroy(&ct_priv->ct_tuples_ht); +err_ct_tuples_ht: + rhashtable_destroy(&ct_priv->zone_ht); +err_ct_zone_ht: err_ct_nat_tbl: mlx5_chains_destroy_global_table(chains, ct_priv->ct); err_ct_tbl:
When rhashtable_init() fails, it returns -EINVAL. However, since error return value of rhashtable_init is not checked, it can cause use of uninitialized pointers. So, fix unhandled errors of rhashtable_init. Signed-off-by: MichelleJin <shjy180909@gmail.com> --- v1->v2: - change commit message - fix unneeded destroying of ht v2->v3: - nothing changed v3->v4: - nothing changed drivers/net/ethernet/mellanox/mlx5/core/en/tc_ct.c | 14 +++++++++++--- 1 file changed, 11 insertions(+), 3 deletions(-)