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=-4.0 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 53C02C433E1 for ; Tue, 14 Jul 2020 23:15:16 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 36D142072D for ; Tue, 14 Jul 2020 23:15:16 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727840AbgGNXPK (ORCPT ); Tue, 14 Jul 2020 19:15:10 -0400 Received: from mail-io1-f70.google.com ([209.85.166.70]:41804 "EHLO mail-io1-f70.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726619AbgGNXPJ (ORCPT ); Tue, 14 Jul 2020 19:15:09 -0400 Received: by mail-io1-f70.google.com with SMTP id n3so224866iob.8 for ; Tue, 14 Jul 2020 16:15:09 -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=y4iEWtfU0KeH/HIu2aGf4JNxF8z33lh3eOzOWOGJp8c=; b=LfgfZd4/9EJXtzmFAh/Ir3XHYrZhgiGUO9TukVTNCt1xvrgat2wP71UJj0UrdPe9OC iKDkTttxDs25UDgYDc4DmPZvqs8xH7h7BB+aDZokd1Dbq9GFRBONQS9aYd7NpURfx/zb e5Gw/+dDA7Lu7aoAZ5yoPOaPvhgGHlw0V8crn2j/lMJvyUbFsXQGNoGpba4gEcTdwOSs piAHJ+ZN1iM4b8VYI72jJGvQaWE6utDzZN4Sj7emBZ4Of4WoYvQbz7pK7nF8W9US4EsV HVJaiVGLu+gGeoYkaEiUTzw9oHKgICMNhGSpvMRZmP6mH4eAJjPjfofpvPIEC96F9cAe vDwA== X-Gm-Message-State: AOAM532RIOOwaHGDTIvLkfKKVe9dyttsMkJ5Gx6Nq2MkAs5aIwB+V3zz B2mLKt1fobKTsjEYkEvZ6pcwkgkzw/N/DIFTeK+bOUFaXMg4 X-Google-Smtp-Source: ABdhPJzfIFFcizVg12hR+hNQck2LRndW+7B2KWWZoAqBVlSMjhnFcb+cKydgja6nAeyP//6r0JVKHznfXB7ulbcFhzayU6bf3/s6 MIME-Version: 1.0 X-Received: by 2002:a6b:d301:: with SMTP id s1mr7292773iob.146.1594768508659; Tue, 14 Jul 2020 16:15:08 -0700 (PDT) Date: Tue, 14 Jul 2020 16:15:08 -0700 In-Reply-To: <0000000000005f350105aa0af108@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000752cbc05aa6efa98@google.com> Subject: Re: WARNING in __kernel_write From: syzbot To: asmadeus@codewreck.org, ericvh@gmail.com, hch@infradead.org, hch@lst.de, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, lucho@ionkov.net, nazard@nazar.ca, netdev@vger.kernel.org, syzkaller-bugs@googlegroups.com, v9fs-developer@lists.sourceforge.net, viro@zeniv.linux.org.uk Content-Type: text/plain; charset="UTF-8" Sender: linux-fsdevel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org syzbot has bisected this issue to: commit 81238b2cff1469ff5b94390d026cd075105d6dcd Author: Christoph Hellwig Date: Thu May 7 17:33:03 2020 +0000 fs: implement kernel_write using __kernel_write bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=10d829bf100000 start commit: be978f8f Add linux-next specific files for 20200713 git tree: linux-next final oops: https://syzkaller.appspot.com/x/report.txt?x=12d829bf100000 console output: https://syzkaller.appspot.com/x/log.txt?x=14d829bf100000 kernel config: https://syzkaller.appspot.com/x/.config?x=3fe4fccb94cbc1a6 dashboard link: https://syzkaller.appspot.com/bug?extid=e6f77e16ff68b2434a2c syz repro: https://syzkaller.appspot.com/x/repro.syz?x=11fe004f100000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=16d35f33100000 Reported-by: syzbot+e6f77e16ff68b2434a2c@syzkaller.appspotmail.com Fixes: 81238b2cff14 ("fs: implement kernel_write using __kernel_write") For information about bisection process see: https://goo.gl/tpsmEJ#bisection