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, URIBL_BLOCKED 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 96983C433E0 for ; Thu, 7 Jan 2021 13:11:55 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 4F9CD223C8 for ; Thu, 7 Jan 2021 13:11:55 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728204AbhAGNLy (ORCPT ); Thu, 7 Jan 2021 08:11:54 -0500 Received: from mail-il1-f198.google.com ([209.85.166.198]:36512 "EHLO mail-il1-f198.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727817AbhAGNLy (ORCPT ); Thu, 7 Jan 2021 08:11:54 -0500 Received: by mail-il1-f198.google.com with SMTP id z15so6428754ilb.3 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=HagAdp9yLKoOxgFX9Ef6qFTF373YH+QNvhbwBYpcL1f48CxW3pzQAlb3WdybfRv/4V xB1nM1khdx6KIOhXU61ZobSLcZDZg/8M2Djs/PotsG8TstxmcybzJpjLuSrKjSEbJh5D AIaqRNpU0t+jpZaLNDfYWn47ZrnKDTqS9I0Jgpzv5aPLKwvgwIV68Or9q30trfZhPeXQ lAZbLXvd4aMlefFYJ1HjCwDkzgUz1WhqFlhPs2/43tvcRDtGNgx1NZUYPHXdnAF7WmZ4 EBymJ0x1I7+aK5Z7lLPtC9abjId37bLIIujXLUxQh4MfgFxxA697VfYaB4QrCSIKBul+ LOXw== X-Gm-Message-State: AOAM5310unQx7VArba3jDhb76v7ZxDtvjB3rpkrdktAerGHLlvJL5U7R 79KkNp/zXIXzzhngdmXoVzwn430B9E5tBzWolUSS9DD/mCry 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-kernel@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