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=-0.4 required=3.0 tests=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 C7056C10F26 for ; Sat, 7 Mar 2020 17:55:04 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id A8B332070A for ; Sat, 7 Mar 2020 17:55:04 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726266AbgCGRzD (ORCPT ); Sat, 7 Mar 2020 12:55:03 -0500 Received: from mail-il1-f198.google.com ([209.85.166.198]:56548 "EHLO mail-il1-f198.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726139AbgCGRzD (ORCPT ); Sat, 7 Mar 2020 12:55:03 -0500 Received: by mail-il1-f198.google.com with SMTP id b17so4172338iln.23 for ; Sat, 07 Mar 2020 09:55:02 -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=5XlGTUdKaoKDhEvj92iVjkqpOpiaj1Gy4Ag7Slt+VSE=; b=sFhXhH2sZSNzi48dzyZREkxtDNsxpAgdnP/nZI7u5YmXlWbU4KrXburjv8ObDfAriK GPCy4zP5K4MuUkMMLoRwb23Nu6hIsdpEgp8iUcCpUFX8EVO7CmUG9TbQcVSbBGQ0+IXa g6s7TL3seluqRcRp0FJYn2Zb8ZHvN+R4oP8vI9ttuOIE4jXl6788EemeK3VqCt07g0PG 3Hx7Te1pJBrzpp+gfbwelcn3J8W4t45kWVOIzzveK/RdAh76Dyi6BA7HO8j1zlTNpG1x qg4XSwQL83Da1azBIgKhx391jHxbkh4bjjmTFjcHaIC6yHdU6n0u+sHXxSJHnf4kNA9H lG/Q== X-Gm-Message-State: ANhLgQ19KqglNXVeQtm6hjcm5ZZotQ1CCNQ6N1++wPLFVYInFGu9FHcP KDwn+I6SCVYqLM5VmRoOvy/L1nLlZrkNViY+gPbVohll0INz X-Google-Smtp-Source: ADFU+vuLgMHbaY1mipKsmH9VLZy1Z02IGCAYBUAO+ljcgofoCeOVF0pdQbHPy18zxSf3UjDYYU/odqGn8BTsLNJ8Hj4Fg+UZTN1W MIME-Version: 1.0 X-Received: by 2002:a92:5c0a:: with SMTP id q10mr4435314ilb.65.1583603702374; Sat, 07 Mar 2020 09:55:02 -0800 (PST) Date: Sat, 07 Mar 2020 09:55:02 -0800 In-Reply-To: <000000000000a98a1705a03bbcbe@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000252cf605a0477843@google.com> Subject: Re: general protection fault in __queue_work (2) From: syzbot To: akpm@linux-foundation.org, axboe@kernel.dk, hannes@cmpxchg.org, linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, schatzberg.dan@gmail.com, sfr@canb.auug.org.au, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org syzbot has bisected this bug to: commit 29dab2122492f6dbc0b895ca5bd047e166684d1a Author: Dan Schatzberg Date: Tue Feb 25 04:14:07 2020 +0000 loop: use worker per cgroup instead of kworker bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=14d6b01de00000 start commit: 770fbb32 Add linux-next specific files for 20200228 git tree: linux-next final crash: https://syzkaller.appspot.com/x/report.txt?x=16d6b01de00000 console output: https://syzkaller.appspot.com/x/log.txt?x=12d6b01de00000 kernel config: https://syzkaller.appspot.com/x/.config?x=576314276bce4ad5 dashboard link: https://syzkaller.appspot.com/bug?extid=889cc963ed79ee90f74f syz repro: https://syzkaller.appspot.com/x/repro.syz?x=176d7f29e00000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=134c481de00000 Reported-by: syzbot+889cc963ed79ee90f74f@syzkaller.appspotmail.com Fixes: 29dab2122492 ("loop: use worker per cgroup instead of kworker") For information about bisection process see: https://goo.gl/tpsmEJ#bisection