Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S937165Ab3DIQIu (ORCPT ); Tue, 9 Apr 2013 12:08:50 -0400 Received: from mail-wi0-f170.google.com ([209.85.212.170]:58477 "EHLO mail-wi0-f170.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S935855Ab3DIQIs (ORCPT ); Tue, 9 Apr 2013 12:08:48 -0400 MIME-Version: 1.0 Reply-To: sedat.dilek@gmail.com In-Reply-To: References: <31778276.CDMUtaAAnc@vostro.rjw.lan> Date: Tue, 9 Apr 2013 18:08:46 +0200 Message-ID: Subject: Re: linux-next: Tree for Apr 9 [cpufreq: NULL pointer deref] From: Sedat Dilek To: Viresh Kumar Cc: "Rafael J. Wysocki" , Stephen Rothwell , linux-next@vger.kernel.org, linux-kernel@vger.kernel.org, cpufreq@vger.kernel.org, Linux PM list Content-Type: text/plain; charset=UTF-8 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 817 Lines: 24 On Tue, Apr 9, 2013 at 4:56 PM, Viresh Kumar wrote: > On 9 April 2013 19:34, Sedat Dilek wrote: >> I have seen it on reboots. >> How to online/offline from sysfs? > > offline a cpu "x" with: > > echo 0 > /sys/devices/system/cpu/cpux/online > > and online with echo 1 > to same location. With x=3 the system gets in an unuseable state. root# echo 0 > /sys/devices/system/cpu/cpu3/online I could not write my reply and had to do a hard/cold reboot. The dmesg log I saw looked similiar to my digicam-shot. - Sedat - -- 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/