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=-2.3 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 autolearn=no 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 A0ECFC33CB1 for ; Thu, 16 Jan 2020 14:53:13 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 7F87620748 for ; Thu, 16 Jan 2020 14:53:13 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726999AbgAPOxL (ORCPT ); Thu, 16 Jan 2020 09:53:11 -0500 Received: from Chamillionaire.breakpoint.cc ([193.142.43.52]:35436 "EHLO Chamillionaire.breakpoint.cc" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726371AbgAPOxK (ORCPT ); Thu, 16 Jan 2020 09:53:10 -0500 Received: from fw by Chamillionaire.breakpoint.cc with local (Exim 4.92) (envelope-from ) id 1is6WA-000628-Ub; Thu, 16 Jan 2020 15:53:06 +0100 Date: Thu, 16 Jan 2020 15:53:06 +0100 From: Florian Westphal To: syzbot Cc: coreteam@netfilter.org, davem@davemloft.net, fw@strlen.de, kadlec@netfilter.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, netfilter-devel@vger.kernel.org, pablo@netfilter.org, syzkaller-bugs@googlegroups.com Subject: Re: BUG: corrupted list in nft_obj_del Message-ID: <20200116145306.GS795@breakpoint.cc> References: <000000000000bc757e059c36db18@google.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <000000000000bc757e059c36db18@google.com> User-Agent: Mutt/1.10.1 (2018-07-13) Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org syzbot wrote: > Hello, > > syzbot found the following crash on: > > HEAD commit: 8b792f84 Merge branch 'mlxsw-Various-fixes' > git tree: net > console output: https://syzkaller.appspot.com/x/log.txt?x=1766b349e00000 > kernel config: https://syzkaller.appspot.com/x/.config?x=7e89bd00623fe71e > dashboard link: https://syzkaller.appspot.com/bug?extid=6ca99af7e70e298bd09d > compiler: gcc (GCC) 9.0.0 20181231 (experimental) > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=168b95e1e00000 > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=10f29b3ee00000 > > IMPORTANT: if you fix the bug, please add the following tag to the commit: > Reported-by: syzbot+6ca99af7e70e298bd09d@syzkaller.appspotmail.com > > list_del corruption, ffff8880a46b1500->prev is LIST_POISON2 #syz fix: netfilter: nf_tables: fix flowtable list del corruption