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=BAYES_00,FROM_LOCAL_HEX, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED 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 A6615C4320E for ; Sat, 28 Aug 2021 02:11:23 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 7C6FB60EFF for ; Sat, 28 Aug 2021 02:11:23 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233016AbhH1CMI (ORCPT ); Fri, 27 Aug 2021 22:12:08 -0400 Received: from mail-il1-f200.google.com ([209.85.166.200]:44729 "EHLO mail-il1-f200.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233053AbhH1CMI (ORCPT ); Fri, 27 Aug 2021 22:12:08 -0400 Received: by mail-il1-f200.google.com with SMTP id d4-20020a923604000000b0022a2b065b0aso5300790ila.11 for ; Fri, 27 Aug 2021 19:11:18 -0700 (PDT) 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=76HdtwbOVuUSM0zGrd3e0OmR58hv5g+WaLxPr1hL0E4=; b=HY0I84HeXO7TTwXnGenmblyqU6b3WJX+ioQWZdUS8ag6OHjTFOvts1QKUkSXI5ywj8 6j/GFaVZrsD7lqyb8zjwtlCAnKKQneH2lOjPmH5KLDNtmGNpR0hwwm98ZZSnhcnm3F3S 3/lwS11KlplVPMTAfgeihOEnHtt2lQjcbcixaYiSt9gXvvbU9RxIgVNbrH5DCJRrU0xc ts38IRpN+3bzo3QG/PGx89EGYMibdKmQsXrqpP53motv11Otlu/mWaaiOXqK9Df+NhMf RPulZe7eghIy3wTkeldsutiUDsqeufgmkVqlV1MfE0PvKDEL4PHFQsAXxsBTdjYijLI1 awkw== X-Gm-Message-State: AOAM533+UAN8tjsn48uWDWfxj7qiNdrgHV0migKP/0Vl7eIJ3Nqa90H6 QliQTPt9jpTuyLfvm0oEolLXnw4cJF+YfPzqBXzQ2lNYsgI+ X-Google-Smtp-Source: ABdhPJwxHKu7FuMPwsV3/K93KbzrQVZacplDFFF1AqhALknBpGVJrTL9S9TggZdWzsPWSAJamrYeqbYL7FXnvQQ5smEHI6uIWlTf MIME-Version: 1.0 X-Received: by 2002:a05:6e02:1d9e:: with SMTP id h30mr8559944ila.195.1630116678280; Fri, 27 Aug 2021 19:11:18 -0700 (PDT) Date: Fri, 27 Aug 2021 19:11:18 -0700 In-Reply-To: <0000000000004e5ec705c6318557@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <0000000000008d2a0005ca951d94@google.com> Subject: Re: [syzbot] general protection fault in legacy_parse_param From: syzbot To: andriin@fb.com, ast@kernel.org, bpf@vger.kernel.org, casey@schaufler-ca.com, christian.brauner@ubuntu.com, daniel@iogearbox.net, dhowells@redhat.com, dvyukov@google.com, jmorris@namei.org, kafai@fb.com, kpsingh@google.com, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, linux-security-module@vger.kernel.org, netdev@vger.kernel.org, paul@paul-moore.com, selinux@vger.kernel.org, songliubraving@fb.com, stephen.smalley.work@gmail.com, syzkaller-bugs@googlegroups.com, tonymarislogistics@yandex.com, viro@zeniv.linux.org.uk, yhs@fb.com Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org syzbot has bisected this issue to: commit 54261af473be4c5481f6196064445d2945f2bdab Author: KP Singh Date: Thu Apr 30 15:52:40 2020 +0000 security: Fix the default value of fs_context_parse_param hook bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=160c5d75300000 start commit: 77dd11439b86 Merge tag 'drm-fixes-2021-08-27' of git://ano.. git tree: upstream final oops: https://syzkaller.appspot.com/x/report.txt?x=150c5d75300000 console output: https://syzkaller.appspot.com/x/log.txt?x=110c5d75300000 kernel config: https://syzkaller.appspot.com/x/.config?x=2fd902af77ff1e56 dashboard link: https://syzkaller.appspot.com/bug?extid=d1e3b1d92d25abf97943 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=126d084d300000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=16216eb1300000 Reported-by: syzbot+d1e3b1d92d25abf97943@syzkaller.appspotmail.com Fixes: 54261af473be ("security: Fix the default value of fs_context_parse_param hook") For information about bisection process see: https://goo.gl/tpsmEJ#bisection