Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1760784AbYAVB7h (ORCPT ); Mon, 21 Jan 2008 20:59:37 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752384AbYAVB73 (ORCPT ); Mon, 21 Jan 2008 20:59:29 -0500 Received: from mu-out-0910.google.com ([209.85.134.188]:7645 "EHLO mu-out-0910.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751483AbYAVB72 (ORCPT ); Mon, 21 Jan 2008 20:59:28 -0500 DomainKey-Signature: a=rsa-sha1; c=nofws; d=googlemail.com; s=gamma; h=message-id:date:from:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; b=qtTSd6Ot3ql49ZPc3iei+mlue2A2OYpj+g3cyViiYxVSp61fYY/TL/P8FU1zulNWt5onSHFFzXylRhabGY5v+huyXZyJZQqcwFGkzS+9X2HVhfZnGZD7i5WIaL3Znsqda2NSxBAyhQL1CLemnXfNYgmv9gCfJ+Nj9POn5AJIOyg= Message-ID: Date: Tue, 22 Jan 2008 02:59:26 +0100 From: "dAniel hAhler" To: vatsa@linux.vnet.ibm.com Subject: Re: Regression with idle cpu cycle handling in 2.6.24 (compared to 2.6.22) Cc: "Dhaval Giani" , LKML , "Ingo Molnar" In-Reply-To: <20080121171834.GA31049@linux.vnet.ibm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Content-Disposition: inline References: <20080120033337.GA8277@linux.vnet.ibm.com> <20080121171834.GA31049@linux.vnet.ibm.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1364 Lines: 37 On Jan 21, 2008 6:18 PM, Srivatsa Vaddagiri wrote: > On Sun, Jan 20, 2008 at 09:03:38AM +0530, Dhaval Giani wrote: > > > btw: writing 1 into "cpu_share" totally locks up the computer! > > > > > > > Can you please provide some more details. Can you go into another > > console (try ctrl-alt-f1) and try to reproduce the issue there. Could > > you take a photo of the oops/panic and upload it somewhere so that we > > can see it? > > I couldn't recreate this problem either on 2.6.24-rc8. > > Daniel, > Could you pass the config file you used pls? Sure, I've uploaded the config to http://codeprobe.de/tmp/config-2.6.24-4-generic It only happens when changing the cpu_share for another user and this user needs to have a cpu hogging process running (like boinc, a while-1 loop or similar). It does not dump anything to the console, but the VirtualBox process on the host takes all CPU - there seems to be no crash, but an endless loop only. I have reported it at http://bugzilla.kernel.org/show_bug.cgi?id=9779 already, with a testcase (outlined above). Thank you for your help. -- http://daniel.hahler.de/ -- 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/