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=-13.6 required=3.0 tests=BAYES_00,DKIMWL_WL_MED, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_IN_DEF_DKIM_WL 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 E10F9C433DB for ; Fri, 8 Jan 2021 09:18:50 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 9465622B2E for ; Fri, 8 Jan 2021 09:18:50 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728072AbhAHJST (ORCPT ); Fri, 8 Jan 2021 04:18:19 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34752 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728040AbhAHJSS (ORCPT ); Fri, 8 Jan 2021 04:18:18 -0500 Received: from mail-qk1-x72e.google.com (mail-qk1-x72e.google.com [IPv6:2607:f8b0:4864:20::72e]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 1CC8BC0612F5 for ; Fri, 8 Jan 2021 01:17:38 -0800 (PST) Received: by mail-qk1-x72e.google.com with SMTP id v126so7885410qkd.11 for ; Fri, 08 Jan 2021 01:17:38 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=xJnl+FZ1gpOcd35fdEFuMTp9+v183tYb0UiM+fOy7cU=; b=di5xAHbQJBIzcIWF3bZji77qGMchbDheH0ljp9OeVzxTJsTkb1EEh34uHGhcXd+m8m 5iqambvjFTe572A7AoC16IwDHfrRhZxHxhlJzWPmrO1wJUB205Y1INzACZRzIQbU9YXZ /ypBV5AK+hR/1EyVAzOpzWPZOenaDnRLgHgUW80KsjG1DpqABnI+g6n/LxGbUjGS2lHg 6E6v8FlKp76BiO+yl2ER5CEkut0OvIkrLvOUmf3a7890RChpZNYop62WodONPAA2yvZM RGZOXFC2C1OwJlfrLDF60NCJEYq5gN5LAhZAnaTix/0HE5uGhgns7qZ8nbufaKH37Nix SIpA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=xJnl+FZ1gpOcd35fdEFuMTp9+v183tYb0UiM+fOy7cU=; b=TfiJ64BWXfxMP00oqHHA4eDTBC88alSi2xreAEX81clukqL+AZRUqCNDbJuirxiq46 iGG9IZZc3ybwLR7NyKDWj7UaCF8ES+OlZMCp4ygtukM/5D2kp38Rz17kHzALFOBLlk9E nj3tRLzclkrPYGd6VVo69i9FMpOxtsLrfHBqfTQg/NtDv4Z/ah9s/1LSUuUUwawbd0ru 7jF9C7lfjry2o23bq68k+/5VmC5oBITNZg36N3HJyQOqC6zP/RPPPR1D+yhkUzt/wz6F ErE+EFrkRof8f9ohJgNxcoepprqpflnboJkhD15IPH+8wcfMudOANNnL/KPkks7kNDOW Kadg== X-Gm-Message-State: AOAM530qLcyCynUqxz8povCrNX9sT4SltlDsD995sGhRUZyBwfKD8NMB VLFbeIJpzGsUjMCMpBS/s6IjQVtNdLtyq0L7IT27cw== X-Google-Smtp-Source: ABdhPJwgedTY862qpgm479A9m2UJWEKg7jtCcvc3RXMc3hBBjnqJesYi2jlShDdx8J8kJGzFlV2lK/PbOOI2sqRem/k= X-Received: by 2002:a37:4285:: with SMTP id p127mr2790403qka.501.1610097456944; Fri, 08 Jan 2021 01:17:36 -0800 (PST) MIME-Version: 1.0 References: <00000000000053e36405b3c538fc@google.com> <0000000000008f60c505b84f2cd0@google.com> In-Reply-To: <0000000000008f60c505b84f2cd0@google.com> From: Dmitry Vyukov Date: Fri, 8 Jan 2021 10:17:25 +0100 Message-ID: Subject: Re: KASAN: null-ptr-deref Write in start_transaction To: syzbot Cc: syzkaller-bugs , LKML , linux-btrfs@vger.kernel.org Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org On Thu, Jan 7, 2021 at 2:11 PM syzbot wrote: > > 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 #syz fix: btrfs: remove unnecessary attempt to drop extent maps after adding inline extent