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 33E33C001DE for ; Wed, 9 Aug 2023 11:17:12 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233425AbjHILRL (ORCPT ); Wed, 9 Aug 2023 07:17:11 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38992 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233428AbjHILRK (ORCPT ); Wed, 9 Aug 2023 07:17:10 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 7A57C1FCE; Wed, 9 Aug 2023 04:17:09 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 101266316D; Wed, 9 Aug 2023 11:17:09 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 1F0A9C433C7; Wed, 9 Aug 2023 11:17:07 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1691579828; bh=FutleaIwIsS7DgTOfN5HB8Zu1BpPa4bDOzb7URiRQ4Y=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=kXW2JUKxbYymPQCzfYX0Vh1qbSngpa3HpltVDtSToGnfCyLo4llXFwKOj8z4LS+IN c9CiplGXwT7UF+lAIKnLX17bzbZIEShgRtm20Vpp7pltKjJ/OODrLBQopH1gVQTAyE ljBW18Xlz7h33U2czi5F6rHUXlh+f6A6++CWJWi0= From: Greg Kroah-Hartman To: stable@vger.kernel.org, netfilter-devel@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Pablo Neira Ayuso Subject: [PATCH 4.19 130/323] netfilter: nf_tables: add NFT_TRANS_PREPARE_ERROR to deal with bound set/chain Date: Wed, 9 Aug 2023 12:39:28 +0200 Message-ID: <20230809103704.077981780@linuxfoundation.org> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20230809103658.104386911@linuxfoundation.org> References: <20230809103658.104386911@linuxfoundation.org> User-Agent: quilt/0.67 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: netfilter-devel@vger.kernel.org From: Pablo Neira Ayuso [ 26b5a5712eb85e253724e56a54c17f8519bd8e4e ] Add a new state to deal with rule expressions deactivation from the newrule error path, otherwise the anonymous set remains in the list in inactive state for the next generation. Mark the set/chain transaction as unbound so the abort path releases this object, set it as inactive in the next generation so it is not reachable anymore from this transaction and reference counter is dropped. Fixes: 1240eb93f061 ("netfilter: nf_tables: incorrect error path handling with NFT_MSG_NEWRULE") Signed-off-by: Pablo Neira Ayuso Signed-off-by: Greg Kroah-Hartman --- include/net/netfilter/nf_tables.h | 1 + net/netfilter/nf_tables_api.c | 26 ++++++++++++++++++++++---- 2 files changed, 23 insertions(+), 4 deletions(-) --- a/include/net/netfilter/nf_tables.h +++ b/include/net/netfilter/nf_tables.h @@ -736,6 +736,7 @@ struct nft_expr_type { enum nft_trans_phase { NFT_TRANS_PREPARE, + NFT_TRANS_PREPARE_ERROR, NFT_TRANS_ABORT, NFT_TRANS_COMMIT, NFT_TRANS_RELEASE --- a/net/netfilter/nf_tables_api.c +++ b/net/netfilter/nf_tables_api.c @@ -120,7 +120,8 @@ static void nft_trans_destroy(struct nft kfree(trans); } -static void nft_set_trans_bind(const struct nft_ctx *ctx, struct nft_set *set) +static void __nft_set_trans_bind(const struct nft_ctx *ctx, struct nft_set *set, + bool bind) { struct nftables_pernet *nft_net; struct net *net = ctx->net; @@ -134,16 +135,26 @@ static void nft_set_trans_bind(const str switch (trans->msg_type) { case NFT_MSG_NEWSET: if (nft_trans_set(trans) == set) - nft_trans_set_bound(trans) = true; + nft_trans_set_bound(trans) = bind; break; case NFT_MSG_NEWSETELEM: if (nft_trans_elem_set(trans) == set) - nft_trans_elem_set_bound(trans) = true; + nft_trans_elem_set_bound(trans) = bind; break; } } } +static void nft_set_trans_bind(const struct nft_ctx *ctx, struct nft_set *set) +{ + return __nft_set_trans_bind(ctx, set, true); +} + +static void nft_set_trans_unbind(const struct nft_ctx *ctx, struct nft_set *set) +{ + return __nft_set_trans_bind(ctx, set, false); +} + static void nft_trans_commit_list_add_tail(struct net *net, struct nft_trans *trans) { struct nftables_pernet *nft_net; @@ -2784,7 +2795,7 @@ static int nf_tables_newrule(struct net return 0; err2: - nft_rule_expr_deactivate(&ctx, rule, NFT_TRANS_PREPARE); + nft_rule_expr_deactivate(&ctx, rule, NFT_TRANS_PREPARE_ERROR); nf_tables_rule_destroy(&ctx, rule); err1: for (i = 0; i < n; i++) { @@ -3809,6 +3820,13 @@ void nf_tables_deactivate_set(const stru enum nft_trans_phase phase) { switch (phase) { + case NFT_TRANS_PREPARE_ERROR: + nft_set_trans_unbind(ctx, set); + if (nft_set_is_anonymous(set)) + nft_deactivate_next(ctx->net, set); + + set->use--; + break; case NFT_TRANS_PREPARE: if (nft_set_is_anonymous(set)) nft_deactivate_next(ctx->net, set);