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 940AEC43214 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 6F4A060C41 for ; Sat, 28 Aug 2021 02:11:23 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233133AbhH1CMJ (ORCPT ); Fri, 27 Aug 2021 22:12:09 -0400 Received: from mail-io1-f69.google.com ([209.85.166.69]:34633 "EHLO mail-io1-f69.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233045AbhH1CMI (ORCPT ); Fri, 27 Aug 2021 22:12:08 -0400 Received: by mail-io1-f69.google.com with SMTP id a9-20020a5ec309000000b005baa3f77016so5184634iok.1 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=cNvSiMJUhDVwim+XGoQUFkxOs2M8Qls7A7LDphQpadyuxsMVUT8/M/EHbSZgJw7vnK PLz0DTJXNlwWZpCTMij4daIEATBwPtm4CnOh47yIReEjwsgaOhCOdJXW2kcOib1a7D0H 4Jat9mHbeenn1KurXQ5OU3fJcjEtmrOb/xMOlOsxa4HFZwgjVPyqjAlyiZ4FoT56zl+H bf2/ir9A8bCt+mH2nGH/nTTF+aUx1c0hXZbbC+jpeUivAvEJx2+r5095GIW3jUOQ4DwB 6uQ8OKHflakUpwppQjSsHHwFcst5quhfuXVyRfzwO0+jqqjn/2c7vbxv2VwXv4Av/UI6 OqVA== X-Gm-Message-State: AOAM533on7acWO7oMre7NycLOqsR7H7BWiDESncUmhhIbXDrgwMgEHXx eCoHYxXNXCXqcP/A4ngCwDdeAMaNjH1EuMJn1mA33gGD2TaN 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-kernel@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