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_PASS,URIBL_BLOCKED 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 D2315C00449 for ; Sun, 7 Oct 2018 12:15:06 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 8636E2087D for ; Sun, 7 Oct 2018 12:15:06 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 8636E2087D Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727059AbeJGTWI (ORCPT ); Sun, 7 Oct 2018 15:22:08 -0400 Received: from mail-it1-f200.google.com ([209.85.166.200]:55815 "EHLO mail-it1-f200.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726378AbeJGTWI (ORCPT ); Sun, 7 Oct 2018 15:22:08 -0400 Received: by mail-it1-f200.google.com with SMTP id m123-v6so8238835ith.5 for ; Sun, 07 Oct 2018 05:15:04 -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:message-id:subject:from:to; bh=SJ3AGGTSUU66fho8qWGNy6hg3KJQ+MSNtMQghR8VfxM=; b=tOfpe+TS6g8NhDbKpTuGj9mIz3Z2g573SpCzNRAMXWdowdv4ddTS1FVKMbUWPPR6aG MTZ/UVfRRxnVC6dKH8ujO+CA5Jm4Jdf4Uwl6CIgZjtGDGDM5OIXranAGccxtn/zyPrtb d5kaUCDQ/bo7e8gHoTPe92uB3Bt18/ltuRbMSGvGGaqr0aOTsSSZY6NOPN/2xkrOQHSc wuNFdRfHyeCMlIuOXl1n8xXqUDkh6szVjTfmFTYTzSWtUL7LBk8guhOGTxvhPkV76kT2 fqApsNJkPgiK4oL5i1R19qql70/CFSqYTLIAeph8eHPa7TJY7D/y7QTD2nihqrff3D1Q +akQ== X-Gm-Message-State: ABuFfojCHk+0gjwSLVUCrPHeJ+xJwb4olKad4V8vi7QXBSLSU/bER7HX 3xsn7kC3vwZLmqRLzHGHvw9ZbKStmjKKECpdBoCU+xefjtDA X-Google-Smtp-Source: ACcGV60z8xmbt7d38K9Wt/g9+0ikQAnFjTgmMo+f0QUGVpDMVNyng7Sn2tNbpY2fTh9RoUPOFVOv+h9RZFXm7jcaTQ0efhGab5On MIME-Version: 1.0 X-Received: by 2002:a5e:9514:: with SMTP id r20-v6mr9583943ioj.39.1538914503841; Sun, 07 Oct 2018 05:15:03 -0700 (PDT) Date: Sun, 07 Oct 2018 05:15:03 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <0000000000005764090577a27486@google.com> Subject: BUG: workqueue lockup (4) From: syzbot To: linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8"; format=flowed; delsp=yes Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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 IMPORTANT: if you fix the bug, please add the following tag to the commit: Reported-by: syzbot+08116743f8ad6f9a6de7@syzkaller.appspotmail.com BUG: workqueue lockup - pool cpus=0 node=0 flags=0x0 nice=0 stuck for 204s! Showing busy workqueues and worker pools: workqueue events: flags=0x0 pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=4/256 in-flight: 14:rtc_timer_do_work pending: vmstat_shepherd, cache_reap, check_corruption workqueue events_power_efficient: flags=0x80 pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=1/256 pending: do_cache_clean workqueue mm_percpu_wq: flags=0x8 pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=1/256 pending: vmstat_update workqueue kacpi_notify: flags=0x0 pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=1/1 pending: acpi_os_execute_deferred pool 0: cpus=0 node=0 flags=0x0 nice=0 hung=204s workers=2 idle: 2683 --- This bug is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@googlegroups.com. syzbot will keep track of this bug report. See: https://goo.gl/tpsmEJ#bug-status-tracking for how to communicate with syzbot. syzbot can test patches for this bug, for details see: https://goo.gl/tpsmEJ#testing-patches