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=-13.3 required=3.0 tests=BAYES_00,DKIMWL_WL_MED, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_IN_DEF_DKIM_WL 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 49E5AC4321A for ; Tue, 26 Jan 2021 04:56:29 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 1D29422EBD for ; Tue, 26 Jan 2021 04:56:29 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729128AbhAZEyx (ORCPT ); Mon, 25 Jan 2021 23:54:53 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40062 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727135AbhAYJqw (ORCPT ); Mon, 25 Jan 2021 04:46:52 -0500 Received: from mail-qt1-x82c.google.com (mail-qt1-x82c.google.com [IPv6:2607:f8b0:4864:20::82c]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 23A3EC0617A7 for ; Mon, 25 Jan 2021 01:35:40 -0800 (PST) Received: by mail-qt1-x82c.google.com with SMTP id r9so9171118qtp.11 for ; Mon, 25 Jan 2021 01:35:40 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=+6jCwIJstX1wZgb0EPoSQk8h054Be3opSl0qtm83Ox0=; b=BxupoS51tg1ooQ4CZqTzxm87f0+6VMrCIqfhHyZ32g3ila8nohM1yTaE4xtv3GBXml NSMW8CPeVRG1CKoPHsaq7ojInKH1w5glVfKSPI+8GaTAcbkILcP+e3jkltXY15vvRdOn tnrJePGlQEezxdlDDXVmgzkxBkpdTHroQIXJP6SDHZO9gRh/KVfEapyIWfoeYrTFit1D iM9J7yC60x34Yw7/TB8KA41SI0m9qnZ00hnoIjBywoETqrWqjpHb5qZOFeLc8DUNhtnA DXzYTvH4FHgbkLwDxYxa/f6WaB5vrUQRLrjmiRM63nM+JpOpVulpPqF6Yg+oGkx4hgzr ucRQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=+6jCwIJstX1wZgb0EPoSQk8h054Be3opSl0qtm83Ox0=; b=aehjobngt7m43YrH/0Pi+4gN+GQps1cXQyMb4tk6Zg7X4SEjTZVSdDBHKSp/hgpN1B G+nf1LAmTX3Y27j/jZFE0sBCIiQOqUTd2YRmRnc++Znyheh61fGy+KPGKwtGDWlywzUi o40S5PS1A3ZqTZB0tneOwUOe7seSM52/zKqf2MKzhc9BpjqGu4JJLLZe/EdCCXYlbDCO O85EvGRMGgXqGG9PI3QTEJs8SARWF8YJQnA+lamiGLns/WhwLCOC+5rV06bPFPTlz+N4 ja1wj2gET9DGNHBmVX0mrMOMZhnzScsAGpH4Gf24r1AORox5qq2+8FIfKm8wqtZyuRF6 SKwA== X-Gm-Message-State: AOAM533wXlr8r3ho+vYzIyFHbStnTwUjpFpVjFbEGaohdwXu0nwmflrm VWpSwicoXzw3v3/EwXKlib/q0fgFZeiKP/x0DK3I2g== X-Google-Smtp-Source: ABdhPJz7Hq5jJ1Zd4FMLaGFJFeb7Wi/gXQqRhHLh8T53KlQwPZM8j5FOfVPb4odNELSnoHsrBvDsQXkJfNnezb8gI5Q= X-Received: by 2002:ac8:7551:: with SMTP id b17mr93603qtr.43.1611567339141; Mon, 25 Jan 2021 01:35:39 -0800 (PST) MIME-Version: 1.0 References: <000000000000a358f905ae6b5dc6@google.com> <000000000000dd897e05b9806982@google.com> In-Reply-To: <000000000000dd897e05b9806982@google.com> From: Dmitry Vyukov Date: Mon, 25 Jan 2021 10:35:27 +0100 Message-ID: Subject: Re: KASAN: use-after-free Read in dump_schedule To: syzbot Cc: Anant Thazhemadam , anmol.karan123@gmail.com, coreteam@netfilter.org, David Miller , Florian Westphal , Jamal Hadi Salim , =?UTF-8?B?SmnFmcOtIFDDrXJrbw==?= , Jozsef Kadlecsik , Jakub Kicinski , leandro.maciel.dorileo@intel.com, LKML , netdev , NetFilter , Pablo Neira Ayuso , subashab@codeaurora.org, syzkaller-bugs , vedang.patel@intel.com, Cong Wang , Hideaki YOSHIFUJI Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org On Fri, Jan 22, 2021 at 6:21 PM syzbot wrote: > > syzbot suspects this issue was fixed by commit: > > commit cc00bcaa589914096edef7fb87ca5cee4a166b5c > Author: Subash Abhinov Kasiviswanathan > Date: Wed Nov 25 18:27:22 2020 +0000 > > netfilter: x_tables: Switch synchronization to RCU > > bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=10879d68d00000 > start commit: 59126901 Merge tag 'perf-tools-fixes-for-v5.9-2020-09-03' .. > git tree: upstream > kernel config: https://syzkaller.appspot.com/x/.config?x=3c5f6ce8d5b68299 > dashboard link: https://syzkaller.appspot.com/bug?extid=621fd33c0b53d15ee8de > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=152c3af9900000 > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=12213b71900000 > > If the result looks correct, please mark the issue as fixed by replying with: > > #syz fix: netfilter: x_tables: Switch synchronization to RCU > > For information about bisection process see: https://goo.gl/tpsmEJ#bisection #syz fix: netfilter: x_tables: Switch synchronization to RCU