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=-3.9 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FSL_HELO_FAKE,MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING, SPF_HELO_NONE,SPF_PASS,T_DKIMWL_WL_HIGH,USER_AGENT_MUTT 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 88553C43218 for ; Mon, 10 Jun 2019 23:50:07 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 602A32086A for ; Mon, 10 Jun 2019 23:50:07 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1560210607; bh=4Nz0ZunImL8dBRzdfxHCUv27SCmMJ3PFmP9iuPIVwkA=; h=Date:From:To:Cc:Subject:References:In-Reply-To:List-ID:From; b=pDXu63I7WXSj79ZxGufL+t3ggaVvSeU5OKZLZqimdSo8UzsqavFighgDjcWJUN4us vlEyWy6RkowNQNoimz2FDrDNUOHtb9ScILRREBtDpPqQoEXbTH1O//4vTep+vwqIN+ BcBRSS89Ovj//NNnIlX8lSTTmMGtvWtbHvqEWr9o= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2390751AbfFJXuD (ORCPT ); Mon, 10 Jun 2019 19:50:03 -0400 Received: from mail.kernel.org ([198.145.29.99]:51832 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2390570AbfFJXuC (ORCPT ); Mon, 10 Jun 2019 19:50:02 -0400 Received: from gmail.com (unknown [104.132.1.77]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 61738206C3; Mon, 10 Jun 2019 23:50:01 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1560210601; bh=4Nz0ZunImL8dBRzdfxHCUv27SCmMJ3PFmP9iuPIVwkA=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=AhdwmqtEpo5q07BJYL9MWvgj0uN6G24vgul44K0FRdH4A3ENzeM12idqpB0F2844N Ku1VagKp2qHHhKSzj/wxTsDZZfWx51ykw0W15EvOlZVxJ/18U29EHtRmyWc9JjJJsZ DtnJU99ubBhXuBAwhFaZB7jM96h1adlZ3rUezWbw= Date: Mon, 10 Jun 2019 16:49:59 -0700 From: Eric Biggers To: Alessandro Zummo , Alexandre Belloni , Jiwei Sun , linux-rtc@vger.kernel.org Cc: Dmitry Vyukov , syzbot , LKML , syzkaller-bugs Subject: [rtc] Re: BUG: workqueue lockup (4) Message-ID: <20190610234959.GB220379@gmail.com> References: <0000000000005764090577a27486@google.com> <20181007193918.GC32272@piout.net> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20181007193918.GC32272@piout.net> User-Agent: Mutt/1.10.1 (2018-07-13) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Sun, Oct 07, 2018 at 09:39:18PM +0200, Alexandre Belloni wrote: > Hi, > > On 07/10/2018 14:18:31+0200, Dmitry Vyukov wrote: > > On Sun, Oct 7, 2018 at 2:15 PM, syzbot > > wrote: > > > Hello, > > > > > > syzbot found the following crash on: > > > > > > HEAD commit: c1d84a1b42ef Merge git://git.kernel.org/pub/scm/linux/kern.. > > > git tree: upstream > > > console output: https://syzkaller.appspot.com/x/log.txt?x=14c5f491400000 > > > kernel config: https://syzkaller.appspot.com/x/.config?x=c0af03fe452b65fb > > > dashboard link: https://syzkaller.appspot.com/bug?extid=08116743f8ad6f9a6de7 > > > compiler: gcc (GCC) 8.0.1 20180413 (experimental) > > > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=14514a6e400000 > > > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1025ebb9400000 > > > > The reproducer seems to be all about rtc. So +rtc maintainers. > > > > It seems to be that bug: > http://patchwork.ozlabs.org/patch/898552/ > > I'm pretty sure the fix is not correct though and didn't have the time > to work on a proper fix. > Is there any plan to actually fix this? Because this bug is still open, syzbot isn't able to report "workqueue lockup" bugs elsewhere in the kernel. - Eric