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=-0.4 required=3.0 tests=FROM_LOCAL_HEX, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS 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 CF6A8C43603 for ; Thu, 5 Dec 2019 01:55:02 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id A3AEF20659 for ; Thu, 5 Dec 2019 01:55:02 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728609AbfLEBzB (ORCPT ); Wed, 4 Dec 2019 20:55:01 -0500 Received: from mail-il1-f200.google.com ([209.85.166.200]:36374 "EHLO mail-il1-f200.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728132AbfLEBzB (ORCPT ); Wed, 4 Dec 2019 20:55:01 -0500 Received: by mail-il1-f200.google.com with SMTP id v15so1324122iln.3 for ; Wed, 04 Dec 2019 17:55:00 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:date:in-reply-to:message-id:subject :from:to; bh=4FLc7BuR7w3spPKHAoaSawNb5C2SfyMpTNFxv+oG8mk=; b=GasmWAI/7mkAK6lU4RTT1nQFCu3sFTBgTZbHv04ppg8pZiwN/4ul8OqbnMPysq/o+F i50mZULnF7N5vBb8a8sskvVbfT9KSPT9OBW67CLeQ+ZXA2sdzxD5VfJzc9Pehu9Xuhof FkrP5m0qrksSVZ+DvS3LVADMiYoud0DyQzQERVoYG19odMG6rnNySnv34H+ti27PycA7 5kS+4IUIPFTXDiO/sac5ZwjgkMX5OvLABo1/O4KAHGBWUN6LuA67IEkatJ+VdNnajdLq 82blsHDHP1S8jWfacGlDNKAEPaIrLOWvRMdVE65n6o9Qavl2BCnyC6XOq+DeYYEQsxHv lBlQ== X-Gm-Message-State: APjAAAU2HRoTB46FJmh56qKw3fGtmWdRBuZQwM9imQaR2wIIxIATToV6 H3yp4Z/ifBJOJgi6i+vFXmuq0tFYfBA2hVA/NuDdNH/VQDAI X-Google-Smtp-Source: APXvYqzjP5/pIC/q5gNc7zKo2jBv47pzxF64WSrgioGICxedl/zZ1B9K/JruZLRezQwWnrssF3NgLpBc60Xng6Z/+9lTWhY+cHrY MIME-Version: 1.0 X-Received: by 2002:a92:4818:: with SMTP id v24mr6139534ila.96.1575510900571; Wed, 04 Dec 2019 17:55:00 -0800 (PST) Date: Wed, 04 Dec 2019 17:55:00 -0800 In-Reply-To: <0000000000008399d40598d8a34d@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000918b470598eb37b7@google.com> Subject: Re: KASAN: vmalloc-out-of-bounds Write in pcpu_alloc From: syzbot To: akpm@linux-foundation.org, andriin@fb.com, aryabinin@virtuozzo.com, ast@kernel.org, bpf@vger.kernel.org, christophe.leroy@c-s.fr, daniel@iogearbox.net, dja@axtens.net, dvyukov@google.com, glider@google.com, gor@linux.ibm.com, kafai@fb.com, linux-kernel@vger.kernel.org, mark.rutland@arm.com, netdev@vger.kernel.org, songliubraving@fb.com, syzkaller-bugs@googlegroups.com, torvalds@linux-foundation.org, yhs@fb.com Content-Type: text/plain; charset="UTF-8"; format=flowed; delsp=yes Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org syzbot has bisected this bug to: commit 0609ae011deb41c9629b7f5fd626dfa1ac9d16b0 Author: Daniel Axtens Date: Sun Dec 1 01:55:00 2019 +0000 x86/kasan: support KASAN_VMALLOC bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=10c70f36e00000 start commit: b3c424eb sch_cake: Add missing NLA policy entry TCA_CAKE_S.. git tree: bpf final crash: https://syzkaller.appspot.com/x/report.txt?x=12c70f36e00000 console output: https://syzkaller.appspot.com/x/log.txt?x=14c70f36e00000 kernel config: https://syzkaller.appspot.com/x/.config?x=7d8ab2e0e09c2a82 dashboard link: https://syzkaller.appspot.com/bug?extid=59b7daa4315e07a994f1 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=140df641e00000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=147dcc2ae00000 Reported-by: syzbot+59b7daa4315e07a994f1@syzkaller.appspotmail.com Fixes: 0609ae011deb ("x86/kasan: support KASAN_VMALLOC") For information about bisection process see: https://goo.gl/tpsmEJ#bisection