Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752078AbaKGM72 (ORCPT ); Fri, 7 Nov 2014 07:59:28 -0500 Received: from mail-wi0-f170.google.com ([209.85.212.170]:45707 "EHLO mail-wi0-f170.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751937AbaKGM70 (ORCPT ); Fri, 7 Nov 2014 07:59:26 -0500 Message-ID: <545CC0E8.4070102@message-id.googlemail.com> Date: Fri, 07 Nov 2014 13:54:00 +0100 From: Stefan Seyfried User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.2.0 MIME-Version: 1.0 To: LKML CC: Paul Bolle Subject: Re: [REGRESSION] in 3.18-rc1: ppp crashes kernel References: <545CA8B6.2060608@message-id.googlemail.com> <1415361193.4390.46.camel@x220> <545CB37C.6080804@message-id.googlemail.com> In-Reply-To: <545CB37C.6080804@message-id.googlemail.com> Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Am 07.11.2014 um 12:56 schrieb Stefan Seyfried: > Hi Paul, > > Am 07.11.2014 um 12:53 schrieb Paul Bolle: >> Wild guess: is CONFIG_RCU_NOCB_CPU perhaps set in your >> v3.18-rc3 .config? > > Yes it is: > tux@linux:~> zgrep CONFIG_RCU_NOCB_CPU /proc/config.gz > CONFIG_RCU_NOCB_CPU=y > # CONFIG_RCU_NOCB_CPU_NONE is not set > # CONFIG_RCU_NOCB_CPU_ZERO is not set > CONFIG_RCU_NOCB_CPU_ALL=y > > And I'll try without it, but looking at the backtrace and the actual > BUG_ON() in the code, I cannot really believe it is the real problems. > > But I'll try with the config changed and with the above line removed. JFTR, this did not help: tux@linux:~/linux> zgrep CONFIG_RCU_NOCB_CPU /proc/config.gz # CONFIG_RCU_NOCB_CPU is not set neither did: --- a/init/main.c +++ b/init/main.c @@ -583,7 +583,7 @@ asmlinkage __visible void __init start_kernel(void) early_irq_init(); init_IRQ(); tick_init(); - rcu_init_nohz(); +// rcu_init_nohz(); init_timers(); hrtimers_init(); softirq_init(); -- Stefan Seyfried Linux Consultant & Developer -- GPG Key: 0x731B665B B1 Systems GmbH Osterfeldstraße 7 / 85088 Vohburg / http://www.b1-systems.de GF: Ralph Dehner / Unternehmenssitz: Vohburg / AG: Ingolstadt,HRB 3537 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/