diff mbox series

[net-next,09/11] netfilter: nf_tables: avoid false-positive lockdep splats with basechain hook

Message ID 20241106234625.168468-10-pablo@netfilter.org (mailing list archive)
State New
Delegated to: Netdev Maintainers
Headers show
Series [net-next,01/11] netfilter: Make legacy configs user selectable | expand

Checks

Context Check Description
netdev/series_format success Pull request is its own cover letter
netdev/tree_selection success Clearly marked for net-next
netdev/ynl success Generated files up to date; no warnings/errors; no diff in generated;
netdev/fixes_present success Fixes tag not required for -next series
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit success Errors and warnings before: 3 this patch: 3
netdev/build_tools success No tools touched, skip
netdev/cc_maintainers warning 3 maintainers not CCed: horms@kernel.org kadlec@netfilter.org coreteam@netfilter.org
netdev/build_clang success Errors and warnings before: 3 this patch: 3
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/deprecated_api success None detected
netdev/check_selftest success No net selftest shell script
netdev/verify_fixes success No Fixes tag
netdev/build_allmodconfig_warn success Errors and warnings before: 14 this patch: 14
netdev/checkpatch warning WARNING: line length of 84 exceeds 80 columns
netdev/build_clang_rust success No Rust files in patch. Skipping build
netdev/kdoc success Errors and warnings before: 5 this patch: 5
netdev/source_inline success Was 0 now: 0

Commit Message

Pablo Neira Ayuso Nov. 6, 2024, 11:46 p.m. UTC 
From: Florian Westphal <fw@strlen.de>

Like previous patches: iteration is ok if the list cannot be altered in
parallel.

Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
---
 net/netfilter/nf_tables_api.c | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)
diff mbox series

Patch

diff --git a/net/netfilter/nf_tables_api.c b/net/netfilter/nf_tables_api.c
index 9e367e134691..3b5154f2dd79 100644
--- a/net/netfilter/nf_tables_api.c
+++ b/net/netfilter/nf_tables_api.c
@@ -1824,7 +1824,8 @@  static int nft_dump_stats(struct sk_buff *skb, struct nft_stats __percpu *stats)
 	return -ENOSPC;
 }
 
-static int nft_dump_basechain_hook(struct sk_buff *skb, int family,
+static int nft_dump_basechain_hook(struct sk_buff *skb,
+				   const struct net *net, int family,
 				   const struct nft_base_chain *basechain,
 				   const struct list_head *hook_list)
 {
@@ -1849,7 +1850,8 @@  static int nft_dump_basechain_hook(struct sk_buff *skb, int family,
 		if (!hook_list)
 			hook_list = &basechain->hook_list;
 
-		list_for_each_entry_rcu(hook, hook_list, list) {
+		list_for_each_entry_rcu(hook, hook_list, list,
+					lockdep_commit_lock_is_held(net)) {
 			if (!first)
 				first = hook;
 
@@ -1900,7 +1902,7 @@  static int nf_tables_fill_chain_info(struct sk_buff *skb, struct net *net,
 		const struct nft_base_chain *basechain = nft_base_chain(chain);
 		struct nft_stats __percpu *stats;
 
-		if (nft_dump_basechain_hook(skb, family, basechain, hook_list))
+		if (nft_dump_basechain_hook(skb, net, family, basechain, hook_list))
 			goto nla_put_failure;
 
 		if (nla_put_be32(skb, NFTA_CHAIN_POLICY,