From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751418AbbEGFIb (ORCPT ); Thu, 7 May 2015 01:08:31 -0400 Received: from mail-wi0-f180.google.com ([209.85.212.180]:38767 "EHLO mail-wi0-f180.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750812AbbEGFIa (ORCPT ); Thu, 7 May 2015 01:08:30 -0400 Message-ID: <1430975311.2955.73.camel@gmail.com> Subject: Re: [KERNEL BUG] do_timer/tick_handover_do_timer 3.10.17 From: Mike Galbraith To: "Oza (Pawandeep) Oza" Cc: pawandeep oza , "linux-kernel@vger.kernel.org" , malayasen rout Date: Thu, 07 May 2015 07:08:31 +0200 In-Reply-To: <5C6899BCED92C94EBDCC00F80838E3D52113A83F@SJEXCHMB06.corp.ad.broadcom.com> References: <1430968960.2955.45.camel@gmail.com> <5C6899BCED92C94EBDCC00F80838E3D52113A83F@SJEXCHMB06.corp.ad.broadcom.com> Content-Type: text/plain; charset="UTF-8" X-Mailer: Evolution 3.12.11 Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, 2015-05-07 at 04:37 +0000, Oza (Pawandeep) Oza wrote: > Problem Statement: the timkeeping is stopped, do_timer is no more a > job of cpu0. > > The reason: the variable "tick_do_timer_cpu" is not set to correct CPU > (cpu0) > And when BUG() happens, the tick_do_timer_cpu variable stay set to 1, > 2 or 3 (we have 4 cores) Solution Statement: Fix the UTTERLY DEADLY bug. -Mike