* [PATCH net-next] net: check return value of rhashtable_init
@ 2021-09-14 16:18 MichelleJin
2021-09-19 7:50 ` Roi Dayan
0 siblings, 1 reply; 2+ messages in thread
From: MichelleJin @ 2021-09-14 16:18 UTC (permalink / raw)
To: davem, kuba, yoshfuji, dsahern, johannes
Cc: saeedm, leon, roid, paulb, lariel, ozsh, vladbu, cmi, netdev,
linux-rdma, linux-wireless
Handling errors of rhashtable_init.
When rhashtable_init fails, it returns -EINVAL.
Signed-off-by: MichelleJin <shjy180909@gmail.com>
---
.../net/ethernet/mellanox/mlx5/core/en/tc_ct.c | 15 ++++++++++++---
net/ipv6/ila/ila_xlat.c | 4 +++-
net/ipv6/seg6_hmac.c | 6 +++++-
net/mac80211/mesh_pathtbl.c | 3 ++-
4 files changed, 22 insertions(+), 6 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..5ae3b97df10e 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 +2127,21 @@ 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_nat_ht);
+err_ct_tuples_ht:
+ rhashtable_destroy(&ct_priv->ct_tuples_ht);
+err_ct_zone_ht:
+ rhashtable_destroy(&ct_priv->zone_ht);
err_ct_nat_tbl:
mlx5_chains_destroy_global_table(chains, ct_priv->ct);
err_ct_tbl:
diff --git a/net/ipv6/ila/ila_xlat.c b/net/ipv6/ila/ila_xlat.c
index a1ac0e3d8c60..481d475353ea 100644
--- a/net/ipv6/ila/ila_xlat.c
+++ b/net/ipv6/ila/ila_xlat.c
@@ -610,7 +610,9 @@ int ila_xlat_init_net(struct net *net)
if (err)
return err;
- rhashtable_init(&ilan->xlat.rhash_table, &rht_params);
+ err = rhashtable_init(&ilan->xlat.rhash_table, &rht_params);
+ if (err)
+ return err;
return 0;
}
diff --git a/net/ipv6/seg6_hmac.c b/net/ipv6/seg6_hmac.c
index 687d95dce085..a78554993163 100644
--- a/net/ipv6/seg6_hmac.c
+++ b/net/ipv6/seg6_hmac.c
@@ -403,9 +403,13 @@ EXPORT_SYMBOL(seg6_hmac_init);
int __net_init seg6_hmac_net_init(struct net *net)
{
+ int err;
+
struct seg6_pernet_data *sdata = seg6_pernet(net);
- rhashtable_init(&sdata->hmac_infos, &rht_params);
+ err = rhashtable_init(&sdata->hmac_infos, &rht_params);
+ if (err)
+ return err;
return 0;
}
diff --git a/net/mac80211/mesh_pathtbl.c b/net/mac80211/mesh_pathtbl.c
index efbefcbac3ac..3ef5d6e00410 100644
--- a/net/mac80211/mesh_pathtbl.c
+++ b/net/mac80211/mesh_pathtbl.c
@@ -60,7 +60,8 @@ static struct mesh_table *mesh_table_alloc(void)
atomic_set(&newtbl->entries, 0);
spin_lock_init(&newtbl->gates_lock);
spin_lock_init(&newtbl->walk_lock);
- rhashtable_init(&newtbl->rhead, &mesh_rht_params);
+ if (rhashtable_init(&newtbl->rhead, &mesh_rht_params))
+ return NULL;
return newtbl;
}
--
2.25.1
^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [PATCH net-next] net: check return value of rhashtable_init
2021-09-14 16:18 [PATCH net-next] net: check return value of rhashtable_init MichelleJin
@ 2021-09-19 7:50 ` Roi Dayan
0 siblings, 0 replies; 2+ messages in thread
From: Roi Dayan @ 2021-09-19 7:50 UTC (permalink / raw)
To: MichelleJin, davem, kuba, yoshfuji, dsahern, johannes
Cc: saeedm, leon, paulb, lariel, ozsh, vladbu, cmi, netdev,
linux-rdma, linux-wireless
On 2021-09-14 7:18 PM, MichelleJin wrote:
> Handling errors of rhashtable_init.
>
> When rhashtable_init fails, it returns -EINVAL.
>
> Signed-off-by: MichelleJin <shjy180909@gmail.com>
> ---
> .../net/ethernet/mellanox/mlx5/core/en/tc_ct.c | 15 ++++++++++++---
> net/ipv6/ila/ila_xlat.c | 4 +++-
> net/ipv6/seg6_hmac.c | 6 +++++-
> net/mac80211/mesh_pathtbl.c | 3 ++-
> 4 files changed, 22 insertions(+), 6 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..5ae3b97df10e 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 +2127,21 @@ 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;
>
you don't need to destroy the ht that failed to init.
so if zone_ht fails jump to err_ct_nat_tbl.
and if ct_tuple_ht fails jump to err_ct_zone_ht. etc.
> return ct_priv;
>
> +err_ct_tuples_nat_ht:
> + rhashtable_destroy(&ct_priv->ct_tuples_nat_ht);
> +err_ct_tuples_ht:
> + rhashtable_destroy(&ct_priv->ct_tuples_ht);
> +err_ct_zone_ht:
> + rhashtable_destroy(&ct_priv->zone_ht);
> err_ct_nat_tbl:
> mlx5_chains_destroy_global_table(chains, ct_priv->ct);
> err_ct_tbl:
> diff --git a/net/ipv6/ila/ila_xlat.c b/net/ipv6/ila/ila_xlat.c
> index a1ac0e3d8c60..481d475353ea 100644
> --- a/net/ipv6/ila/ila_xlat.c
> +++ b/net/ipv6/ila/ila_xlat.c
> @@ -610,7 +610,9 @@ int ila_xlat_init_net(struct net *net)
> if (err)
> return err;
>
> - rhashtable_init(&ilan->xlat.rhash_table, &rht_params);
> + err = rhashtable_init(&ilan->xlat.rhash_table, &rht_params);
> + if (err)
> + return err;
>
since you return an error i think you need to free the allocated
locks called a line up with alloc_ila_locks(ilan);
I think with free_bucket_spinlocks(ilan->xlat.locks);
> return 0;
> }
> diff --git a/net/ipv6/seg6_hmac.c b/net/ipv6/seg6_hmac.c
> index 687d95dce085..a78554993163 100644
> --- a/net/ipv6/seg6_hmac.c
> +++ b/net/ipv6/seg6_hmac.c
> @@ -403,9 +403,13 @@ EXPORT_SYMBOL(seg6_hmac_init);
>
> int __net_init seg6_hmac_net_init(struct net *net)
> {
> + int err;
> +
> struct seg6_pernet_data *sdata = seg6_pernet(net);
>
> - rhashtable_init(&sdata->hmac_infos, &rht_params);
> + err = rhashtable_init(&sdata->hmac_infos, &rht_params);
> + if (err)
> + return err;
here you can just return rhashtable_init().
note I see the caller, seg6_net_init(), doesn't check for error.
>
> return 0;
> }
> diff --git a/net/mac80211/mesh_pathtbl.c b/net/mac80211/mesh_pathtbl.c
> index efbefcbac3ac..3ef5d6e00410 100644
> --- a/net/mac80211/mesh_pathtbl.c
> +++ b/net/mac80211/mesh_pathtbl.c
> @@ -60,7 +60,8 @@ static struct mesh_table *mesh_table_alloc(void)
> atomic_set(&newtbl->entries, 0);
> spin_lock_init(&newtbl->gates_lock);
> spin_lock_init(&newtbl->walk_lock);
> - rhashtable_init(&newtbl->rhead, &mesh_rht_params);
> + if (rhashtable_init(&newtbl->rhead, &mesh_rht_params))
> + return NULL;
looks like there is a memleak here then. you need to release newtbl
before returning null.
>
> return newtbl;
> }
>
^ permalink raw reply [flat|nested] 2+ messages in thread
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2021-09-14 16:18 [PATCH net-next] net: check return value of rhashtable_init MichelleJin
2021-09-19 7:50 ` Roi Dayan
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