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 X-Spam-Level: X-Spam-Status: No, score=-8.7 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id AB3B7C31E49 for ; Thu, 13 Jun 2019 16:05:01 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 837C420679 for ; Thu, 13 Jun 2019 16:05:01 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1560441901; bh=VbiQpM1EDRF7mWpHDc7VlyU2NWnMot2MNCxyXyGDy2Q=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=BCZpPMkrpe9A9vufIx3rZQOTxx3C1uxEYCSfya/Rqi/kUM9EaT1r3zCL5srBCpoF+ tNAf7IG97fgaGY1u6SILGV2B/mVj0692e+HQNr9WYQ+jwv41dCJggQ/+UmaxEZN7pc WpmGYESg+dwSNsLBN7hc99YnlQiQD+7WHBC3sLz8= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727721AbfFMQEg (ORCPT ); Thu, 13 Jun 2019 12:04:36 -0400 Received: from mail.kernel.org ([198.145.29.99]:35296 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731353AbfFMIq4 (ORCPT ); Thu, 13 Jun 2019 04:46:56 -0400 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id D86062173C; Thu, 13 Jun 2019 08:46:54 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1560415615; bh=VbiQpM1EDRF7mWpHDc7VlyU2NWnMot2MNCxyXyGDy2Q=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=bfGeaXHtWWAFaIiCxVQxeWEySeIRnQW0w8AAVUB/owqvR82ZfUlRTLFrn4dME6YEV AbZ/kr6lKPyXVKtBlFs1vZF+M48v/zBk7XL3fL+XGnJrqSD/l9C+W7YJpXhPnbjRyM BASFlzmrIFmdtRO2QnjR5VSsoysLqsS2aTqlOtRU= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Taehee Yoo , Pablo Neira Ayuso , Sasha Levin Subject: [PATCH 5.1 064/155] netfilter: nf_flow_table: fix missing error check for rhashtable_insert_fast Date: Thu, 13 Jun 2019 10:32:56 +0200 Message-Id: <20190613075656.612439190@linuxfoundation.org> X-Mailer: git-send-email 2.22.0 In-Reply-To: <20190613075652.691765927@linuxfoundation.org> References: <20190613075652.691765927@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org [ Upstream commit 43c8f131184faf20c07221f3e09724611c6525d8 ] rhashtable_insert_fast() may return an error value when memory allocation fails, but flow_offload_add() does not check for errors. This patch just adds missing error checking. Fixes: ac2a66665e23 ("netfilter: add generic flow table infrastructure") Signed-off-by: Taehee Yoo Signed-off-by: Pablo Neira Ayuso Signed-off-by: Sasha Levin --- net/netfilter/nf_flow_table_core.c | 25 ++++++++++++++++++------- 1 file changed, 18 insertions(+), 7 deletions(-) diff --git a/net/netfilter/nf_flow_table_core.c b/net/netfilter/nf_flow_table_core.c index 7aabfd4b1e50..a9e4f74b1ff6 100644 --- a/net/netfilter/nf_flow_table_core.c +++ b/net/netfilter/nf_flow_table_core.c @@ -185,14 +185,25 @@ static const struct rhashtable_params nf_flow_offload_rhash_params = { int flow_offload_add(struct nf_flowtable *flow_table, struct flow_offload *flow) { - flow->timeout = (u32)jiffies; + int err; - rhashtable_insert_fast(&flow_table->rhashtable, - &flow->tuplehash[FLOW_OFFLOAD_DIR_ORIGINAL].node, - nf_flow_offload_rhash_params); - rhashtable_insert_fast(&flow_table->rhashtable, - &flow->tuplehash[FLOW_OFFLOAD_DIR_REPLY].node, - nf_flow_offload_rhash_params); + err = rhashtable_insert_fast(&flow_table->rhashtable, + &flow->tuplehash[0].node, + nf_flow_offload_rhash_params); + if (err < 0) + return err; + + err = rhashtable_insert_fast(&flow_table->rhashtable, + &flow->tuplehash[1].node, + nf_flow_offload_rhash_params); + if (err < 0) { + rhashtable_remove_fast(&flow_table->rhashtable, + &flow->tuplehash[0].node, + nf_flow_offload_rhash_params); + return err; + } + + flow->timeout = (u32)jiffies; return 0; } EXPORT_SYMBOL_GPL(flow_offload_add); -- 2.20.1