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=-2.3 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS,URIBL_BLOCKED,USER_AGENT_MUTT autolearn=ham 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 9D45FC65C1B for ; Sun, 7 Oct 2018 19:39:21 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 35FFA2086D for ; Sun, 7 Oct 2018 19:39:20 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 35FFA2086D Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=bootlin.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-rtc-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726976AbeJHCrj (ORCPT ); Sun, 7 Oct 2018 22:47:39 -0400 Received: from mail.bootlin.com ([62.4.15.54]:54011 "EHLO mail.bootlin.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726529AbeJHCrj (ORCPT ); Sun, 7 Oct 2018 22:47:39 -0400 Received: by mail.bootlin.com (Postfix, from userid 110) id 31F76207C4; Sun, 7 Oct 2018 21:39:18 +0200 (CEST) Received: from localhost (unknown [88.191.26.124]) by mail.bootlin.com (Postfix) with ESMTPSA id EDFEC20703; Sun, 7 Oct 2018 21:39:17 +0200 (CEST) Date: Sun, 7 Oct 2018 21:39:18 +0200 From: Alexandre Belloni To: Dmitry Vyukov Cc: syzbot , a.zummo@towertech.it, linux-rtc@vger.kernel.org, LKML , syzkaller-bugs Subject: Re: BUG: workqueue lockup (4) Message-ID: <20181007193918.GC32272@piout.net> References: <0000000000005764090577a27486@google.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.10.1 (2018-07-13) Sender: linux-rtc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-rtc@vger.kernel.org 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. -- Alexandre Belloni, Bootlin Embedded Linux and Kernel engineering https://bootlin.com