5.15-stable review patch. If anyone has any objections, please let me know.
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From: Pablo Neira Ayuso pablo@netfilter.org
[ Upstream commit 84b1a0c0140a9a92ea108576c0002210f224ce59 ]
Turn update into noop as a follow up for:
9fedd894b4e1 ("netfilter: nf_tables: fix unexpected EOPNOTSUPP error")
instead of adding a transaction object which is simply discarded at a later stage of the commit protocol.
Signed-off-by: Pablo Neira Ayuso pablo@netfilter.org Stable-dep-of: cddc04275f95 ("netfilter: nf_tables: must hold rcu read lock while iterating object type list") Signed-off-by: Sasha Levin sashal@kernel.org --- net/netfilter/nf_tables_api.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-)
diff --git a/net/netfilter/nf_tables_api.c b/net/netfilter/nf_tables_api.c index 71a486d9fd76a..20e2f2deb336d 100644 --- a/net/netfilter/nf_tables_api.c +++ b/net/netfilter/nf_tables_api.c @@ -7189,6 +7189,9 @@ static int nf_tables_newobj(struct sk_buff *skb, const struct nfnl_info *info, if (WARN_ON_ONCE(!type)) return -ENOENT;
+ if (!obj->ops->update) + return 0; + nft_ctx_init(&ctx, net, skb, info->nlh, family, table, NULL, nla);
return nf_tables_updobj(&ctx, type, nla[NFTA_OBJ_DATA], obj); @@ -8787,9 +8790,10 @@ static void nft_obj_commit_update(struct nft_trans *trans) obj = nft_trans_obj(trans); newobj = nft_trans_obj_newobj(trans);
- if (obj->ops->update) - obj->ops->update(obj, newobj); + if (WARN_ON_ONCE(!obj->ops->update)) + return;
+ obj->ops->update(obj, newobj); nft_obj_destroy(&trans->ctx, newobj); }