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=-5.6 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=unavailable 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 5E4D1C55185 for ; Thu, 23 Apr 2020 01:50:16 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 381C92071C for ; Thu, 23 Apr 2020 01:50:16 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="bgzbAfsc" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726491AbgDWBuO (ORCPT ); Wed, 22 Apr 2020 21:50:14 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38468 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726324AbgDWBuM (ORCPT ); Wed, 22 Apr 2020 21:50:12 -0400 Received: from mail-pg1-x541.google.com (mail-pg1-x541.google.com [IPv6:2607:f8b0:4864:20::541]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id F373AC03C1AA; Wed, 22 Apr 2020 18:50:11 -0700 (PDT) Received: by mail-pg1-x541.google.com with SMTP id o15so2085768pgi.1; Wed, 22 Apr 2020 18:50:11 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:date:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to; bh=z7gWbuAnr8CK6KNx2ejzTsMEdH7Upetnyr+8IByZM84=; b=bgzbAfscPUAF9vCwGPvYCa44qFv7Bl70Nl5BLgqJnYOKy7ikPQz/0Z7QoR6DqsROKd fB+eRLie89f/baKLTnhg3hjlqttSBa5J2RgecIOM8b/LSZVn8p7CeUkBTfM9KWls8vAC GtiWjmrvZUIugTQHYJJGXzOcEi6NYgoWx1Fhy6v42l2IOfO57WMxxJEMD783xYbSf76v s1bKZEMCW9WctfEsLym/NIoAuvAF7Fm7qE4T4G9nu/LGUBIDnq/Zo2dKV0rXrlMv6RZa R68IbHc+P09WlhTYvSUItTR9G5Nr4cug1D3RUy3Jk/EPjUQGBDxmhV8E9ZqRpIQpXx+M 3iew== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:date:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to; bh=z7gWbuAnr8CK6KNx2ejzTsMEdH7Upetnyr+8IByZM84=; b=ZEluFXdKtk7KeQT3AW6MX+DuDCNmYgS+cJ1j2qlfqyM1EEOjOII4pcYxEA8zbjbiiU 8QWElBLGkRk7Y0o3tzOvDOWivBW7HZj/1Lbp+4t6dDEfzt6qZK8KZvO40Kz23NCBymwe Np+osCAf6yH+RbdQTUHwTyLaFxwB65RXD7ggDqbns4MBHKAnVvruKSC7y4zYL69bgi5l P8jydY/coWWDCzgEHpkASUDkYWtKlqD7CgFydDB0AYSd8CdTl1Z8eb/0cB3WiiaTHe6y sbM8f5PngWKzbJYjjAoqE4VfIdVKvgnq1sWzEnj5RjW6ZQMwbERGxPaUmky8rNAaEhtW CcEA== X-Gm-Message-State: AGi0PuaOeyVJxJRQji1RrDp5QTTVOZl4pnybRSEAu1YC9AsStJQqY+lm zx9KaF5w4VS+46n5oz2eFSs= X-Google-Smtp-Source: APiQypJKsmu9hDA6l2N4TR1Hxu+bStcaQDcXy36MyqvZOoju1yfHa4mJdaAmx3ZY3iBx+RTsvZXqQg== X-Received: by 2002:a63:5112:: with SMTP id f18mr1790082pgb.356.1587606611346; Wed, 22 Apr 2020 18:50:11 -0700 (PDT) Received: from localhost (146.85.30.125.dy.iij4u.or.jp. [125.30.85.146]) by smtp.gmail.com with ESMTPSA id q201sm850299pfq.40.2020.04.22.18.50.10 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 22 Apr 2020 18:50:10 -0700 (PDT) From: Sergey Senozhatsky X-Google-Original-From: Sergey Senozhatsky Date: Thu, 23 Apr 2020 10:50:08 +0900 To: Tetsuo Handa Cc: syzbot , linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com, Network Development , James Chapman , Petr Mladek , Sergey Senozhatsky Subject: Re: WARNING: locking bug in tomoyo_supervisor Message-ID: <20200423015008.GA246741@jagdpanzerIV.localdomain> References: <000000000000a475ac05a36fa01e@google.com> <5b71a079-54bb-57a0-360d-33fce141504f@i-love.sakura.ne.jp> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <5b71a079-54bb-57a0-360d-33fce141504f@i-love.sakura.ne.jp> Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org On (20/04/17 13:37), Tetsuo Handa wrote: > On 2020/04/17 7:05, syzbot wrote: > > Hello, > > > > syzbot found the following crash on: > > > > HEAD commit: 4f8a3cc1 Merge tag 'x86-urgent-2020-04-12' of git://git.ke.. > > git tree: upstream > > console output: https://syzkaller.appspot.com/x/log.txt?x=1599027de00000 > > kernel config: https://syzkaller.appspot.com/x/.config?x=3bfbde87e8e65624 > > dashboard link: https://syzkaller.appspot.com/bug?extid=1c36440b364ea3774701 > > compiler: clang version 10.0.0 (https://github.com/llvm/llvm-project/ c2443155a0fb245c8f17f2c1c72b6ea391e86e81) > > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=150733cde00000 > > This seems to be a misattributed report explained at https://lkml.kernel.org/r/20190924140241.be77u2jne3melzte@pathway.suse.cz . > Petr and Sergey, how is the progress of making printk() asynchronous? When can we expect that work to be merged? I'd say that lockless logbuf probably will land sometime around 5.8+. Async printk() - unknown. -ss