From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 64257C04FE0 for ; Wed, 5 Jul 2023 16:54:52 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230100AbjGEQyt (ORCPT ); Wed, 5 Jul 2023 12:54:49 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:33120 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231732AbjGEQyp (ORCPT ); Wed, 5 Jul 2023 12:54:45 -0400 Received: from mail.netfilter.org (mail.netfilter.org [217.70.188.207]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 91C8C19AE; Wed, 5 Jul 2023 09:54:38 -0700 (PDT) From: Pablo Neira Ayuso To: netfilter-devel@vger.kernel.org Cc: sashal@kernel.org, gregkh@linuxfoundation.org, stable@vger.kernel.org Subject: [PATCH -stable,5.4 05/10] netfilter: nf_tables: add rescheduling points during loop detection walks Date: Wed, 5 Jul 2023 18:54:18 +0200 Message-Id: <20230705165423.50054-6-pablo@netfilter.org> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20230705165423.50054-1-pablo@netfilter.org> References: <20230705165423.50054-1-pablo@netfilter.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Florian Westphal [ 81ea010667417ef3f218dfd99b69769fe66c2b67 ] Add explicit rescheduling points during ruleset walk. Switching to a faster algorithm is possible but this is a much smaller change, suitable for nf tree. Link: https://bugzilla.netfilter.org/show_bug.cgi?id=1460 Signed-off-by: Florian Westphal Acked-by: Pablo Neira Ayuso --- net/netfilter/nf_tables_api.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/net/netfilter/nf_tables_api.c b/net/netfilter/nf_tables_api.c index cc3d651ffe94..3f0341e3da1f 100644 --- a/net/netfilter/nf_tables_api.c +++ b/net/netfilter/nf_tables_api.c @@ -2712,6 +2712,8 @@ int nft_chain_validate(const struct nft_ctx *ctx, const struct nft_chain *chain) if (err < 0) return err; } + + cond_resched(); } return 0; @@ -7379,9 +7381,13 @@ static int nf_tables_check_loops(const struct nft_ctx *ctx, break; } } + + cond_resched(); } list_for_each_entry(set, &ctx->table->sets, list) { + cond_resched(); + if (!nft_is_active_next(ctx->net, set)) continue; if (!(set->flags & NFT_SET_MAP) || -- 2.30.2