diff options
| author | Pablo Neira Ayuso <pablo@netfilter.org> | 2023-11-06 12:53:09 +0300 |
|---|---|---|
| committer | Pablo Neira Ayuso <pablo@netfilter.org> | 2023-11-08 15:52:32 +0300 |
| commit | 93995bf4af2c5a99e2a87f0cd5ce547d31eb7630 (patch) | |
| tree | a7b456ba275401b182c0e4ab1ddcb8ef71fdba72 /net | |
| parent | 94090b23f3f71c150359a2e0716855a4037ad45a (diff) | |
| download | linux-93995bf4af2c5a99e2a87f0cd5ce547d31eb7630.tar.xz | |
netfilter: nf_tables: remove catchall element in GC sync path
The expired catchall element is not deactivated and removed from GC sync
path. This path holds mutex so just call nft_setelem_data_deactivate()
and nft_setelem_catchall_remove() before queueing the GC work.
Fixes: 4a9e12ea7e70 ("netfilter: nft_set_pipapo: call nft_trans_gc_queue_sync() in catchall GC")
Reported-by: lonial con <kongln9170@gmail.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Diffstat (limited to 'net')
| -rw-r--r-- | net/netfilter/nf_tables_api.c | 22 |
1 files changed, 17 insertions, 5 deletions
diff --git a/net/netfilter/nf_tables_api.c b/net/netfilter/nf_tables_api.c index 146b7447a969..a761ee6796f6 100644 --- a/net/netfilter/nf_tables_api.c +++ b/net/netfilter/nf_tables_api.c @@ -6520,6 +6520,12 @@ static int nft_setelem_deactivate(const struct net *net, return ret; } +static void nft_setelem_catchall_destroy(struct nft_set_elem_catchall *catchall) +{ + list_del_rcu(&catchall->list); + kfree_rcu(catchall, rcu); +} + static void nft_setelem_catchall_remove(const struct net *net, const struct nft_set *set, struct nft_elem_priv *elem_priv) @@ -6528,8 +6534,7 @@ static void nft_setelem_catchall_remove(const struct net *net, list_for_each_entry_safe(catchall, next, &set->catchall_list, list) { if (catchall->elem == elem_priv) { - list_del_rcu(&catchall->list); - kfree_rcu(catchall, rcu); + nft_setelem_catchall_destroy(catchall); break; } } @@ -9678,11 +9683,12 @@ static struct nft_trans_gc *nft_trans_gc_catchall(struct nft_trans_gc *gc, unsigned int gc_seq, bool sync) { - struct nft_set_elem_catchall *catchall; + struct nft_set_elem_catchall *catchall, *next; const struct nft_set *set = gc->set; + struct nft_elem_priv *elem_priv; struct nft_set_ext *ext; - list_for_each_entry_rcu(catchall, &set->catchall_list, list) { + list_for_each_entry_safe(catchall, next, &set->catchall_list, list) { ext = nft_set_elem_ext(set, catchall->elem); if (!nft_set_elem_expired(ext)) @@ -9700,7 +9706,13 @@ dead_elem: if (!gc) return NULL; - nft_trans_gc_elem_add(gc, catchall->elem); + elem_priv = catchall->elem; + if (sync) { + nft_setelem_data_deactivate(gc->net, gc->set, elem_priv); + nft_setelem_catchall_destroy(catchall); + } + + nft_trans_gc_elem_add(gc, elem_priv); } return gc; |