Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755943AbcJUP3b (ORCPT ); Fri, 21 Oct 2016 11:29:31 -0400 Received: from aserp1040.oracle.com ([141.146.126.69]:20688 "EHLO aserp1040.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755768AbcJUP32 (ORCPT ); Fri, 21 Oct 2016 11:29:28 -0400 From: Michael Thayer Subject: PROBLEM: OHCI watchdog timeouts inside VirtualBox, probably due to timer wheel rework Organization: ORACLE Deutschland B.V. und Co. KG To: Alan Stern Cc: linux-kernel@vger.kernel.org, Thomas Gleixner , Michal Necasek , "Knut St. Osmundsen" Message-ID: Date: Fri, 21 Oct 2016 17:29:02 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Thunderbird/45.3.0 MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 8bit X-Source-IP: aserv0021.oracle.com [141.146.126.233] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1176 Lines: 30 Hello Alan (LKML on CC), Contacting you about this on Thomas Gleixner's (also on CC) suggestion. The short summary is that when Linux 4.8.0 (also tested with a few later kernels) is run on a VirtualBox virtual machine with USB enabled, OHCI fails with the log messages "frame counter not updated; disabled" and "HC died; cleaning up". This seems to be due to the 250 ms interval watchdog running with far too short intervals, which we think is a consequence of the timer wheel code rework. I will refer you to a bug filed in Launchpad<1> for a longer description. Hope this is of interest to you. Regards, Michael <1> https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1634737 -- Michael Thayer | VirtualBox engineer ORACLE Deutschland B.V. & Co. KG | Werkstr. 24 | D-71384 Weinstadt ORACLE Deutschland B.V. & Co. KG Hauptverwaltung: Riesstraße 25, D-80992 München Registergericht: Amtsgericht München, HRA 95603 Komplementärin: ORACLE Deutschland Verwaltung B.V. Hertogswetering 163/167, 3543 AS Utrecht, Niederlande Handelsregister der Handelskammer Midden-Nederland, Nr. 30143697 Geschäftsführer: Alexander van der Ven, Jan Schultheiss, Val Maher