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=-3.7 required=3.0 tests=BAYES_00,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 E53D7C433E0 for ; Thu, 7 Jan 2021 13:12:25 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id A0D64223C8 for ; Thu, 7 Jan 2021 13:12:25 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727989AbhAGNLy (ORCPT ); Thu, 7 Jan 2021 08:11:54 -0500 Received: from mail-il1-f199.google.com ([209.85.166.199]:46530 "EHLO mail-il1-f199.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727753AbhAGNLy (ORCPT ); Thu, 7 Jan 2021 08:11:54 -0500 Received: by mail-il1-f199.google.com with SMTP id x14so6388520ilg.13 for ; Thu, 07 Jan 2021 05:11:38 -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=oRgWg98/FIZVEp9r8aGEhshpBf9hX/r9V4Oyf+qndMQ=; b=e+feLOE//VDkAJP3sCFvqfm3i6fgSAgrtu44yH8uQe7vWT7t6YAi2YEMJYsT27nAaX Xe0qAoRMi479RFXLBphegh3REzr43gWDHdDtcU2Y/8Na7W5qdO5SNCeMn41U38C9lPjZ LTfInJzym8BmZ+u8p92rzX7d7mAEKYEiv2c7KTMhUNs4b4bfMBnC6pDb5hAr9b6QrSxo +KkmTiEwoa2GHqAjw8dFot2joZvN5NugInzz0mHTvAlv4AJqxDksg4z+y4gv6IIN1zAs Yp4IXJeCARpDZEcVudoD1E5UDzBxxjzPfKO3eOd+Wx+NPlD7gaaOT0AHSJltanGBrFXs 50Tw== X-Gm-Message-State: AOAM532GeWNerTf1ASc/Euj7KtYrPIWZVGvNc28z6MXy1iMAhqi9JHgA 3oCJ152wzfooNVpiIk0JW5ru2R3GDtSOi8bTHSbF5/SsJpru X-Google-Smtp-Source: ABdhPJzAnEVXSY+0SUdfW+TlfG3lxIrSn4jNeUtDM1iW6Sx0nFOKztdga01Tpd5QZdv7OejOUPG+X745sJHHIqpZqgHwQGz1OH2i MIME-Version: 1.0 X-Received: by 2002:a92:ca46:: with SMTP id q6mr8928737ilo.278.1610025073072; Thu, 07 Jan 2021 05:11:13 -0800 (PST) Date: Thu, 07 Jan 2021 05:11:13 -0800 In-Reply-To: <00000000000053e36405b3c538fc@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <0000000000008f60c505b84f2cd0@google.com> Subject: Re: KASAN: null-ptr-deref Write in start_transaction From: syzbot To: clm@fb.com, dsterba@suse.com, fdmanana@suse.com, josef@toxicpanda.com, linux-btrfs@vger.kernel.org, linux-kernel@vger.kernel.org, mingo@kernel.org, mingo@redhat.com, peterz@infradead.org, rostedt@goodmis.org, syzkaller-bugs@googlegroups.com, will@kernel.org Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org syzbot suspects this issue was fixed by commit: commit f30bed83426c5cb9fce6cabb3f7cc5a9d5428fcc Author: Filipe Manana Date: Fri Nov 13 11:24:17 2020 +0000 btrfs: remove unnecessary attempt to drop extent maps after adding inline extent bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=13ddc30b500000 start commit: 521b619a Merge tag 'linux-kselftest-kunit-fixes-5.10-rc3' .. git tree: upstream kernel config: https://syzkaller.appspot.com/x/.config?x=61033507391c77ff dashboard link: https://syzkaller.appspot.com/bug?extid=6700bca07dff187809c4 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=14a07ab2500000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=10fe69c6500000 If the result looks correct, please mark the issue as fixed by replying with: #syz fix: btrfs: remove unnecessary attempt to drop extent maps after adding inline extent For information about bisection process see: https://goo.gl/tpsmEJ#bisection