From owner-freebsd-stable@FreeBSD.ORG Wed May 26 15:09:00 2010 Return-Path: Delivered-To: freebsd-stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id DDA7A1065673 for ; Wed, 26 May 2010 15:09:00 +0000 (UTC) (envelope-from demelier.david@gmail.com) Received: from mail-bw0-f54.google.com (mail-bw0-f54.google.com [209.85.214.54]) by mx1.freebsd.org (Postfix) with ESMTP id 602A58FC17 for ; Wed, 26 May 2010 15:08:59 +0000 (UTC) Received: by bwz2 with SMTP id 2so1765093bwz.13 for ; Wed, 26 May 2010 08:08:59 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:received:received:in-reply-to :references:date:message-id:subject:from:to:cc:content-type :content-transfer-encoding; bh=zrNuVqHt1cvFgve3ndgdPDj/1YsB/bOLg7QNI+1bCSo=; b=OEFKj2Pur04r2iMOnW6Ity0/NZD1pYSL02a/J6FNA8t4vmalDljrC0ZMxply5wj8sl cT+l17yQ0X39TkkKepts33iuTR9XC60hqiMM0gtYpeGtnFryiGgeYF+SOzWd5vAcBT1D gW3iBmaNH3XMP1+2wFPSN+AASU5BYCD90nPSY= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc:content-type:content-transfer-encoding; b=vOR2JPiGSC5XKc3CgWIfRUpVt6eEDrVuz9v2mq8cwSlksLEdhSkloSH8jYnyRUVw6R RpU/p0TSU91gwOpddkDD7u6S36cxKG0XEL117GMGECcJ4okfivsF5pvqsmbL5GeoVzXa 7joPXqL662JAh8yOpGQ/0YGNhhHLVyRqj5xkk= MIME-Version: 1.0 Received: by 10.204.141.69 with SMTP id l5mr3867162bku.64.1274886537935; Wed, 26 May 2010 08:08:57 -0700 (PDT) Received: by 10.204.123.202 with HTTP; Wed, 26 May 2010 08:08:57 -0700 (PDT) In-Reply-To: References: <4DEBDE2C-C0D2-469D-AC42-DD5027926424@FreeBSD.org> Date: Wed, 26 May 2010 17:08:57 +0200 Message-ID: From: David DEMELIER To: Giovanni Trematerra Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Cc: Brandon Gooch , freebsd-stable@freebsd.org Subject: Re: Kernel panic when unpluggin AC adaptor X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 26 May 2010 15:09:00 -0000 2010/5/26 Giovanni Trematerra : > On Wed, May 26, 2010 at 3:55 PM, Giovanni Trematerra > wrote: >> On Wed, May 26, 2010 at 12:01 PM, David DEMELIER >> wrote: >>> 2010/5/26 Giovanni Trematerra : >>>> On Wed, May 26, 2010 at 11:14 AM, David DEMELIER >>>> wrote: >>>>> 2010/5/25 Giovanni Trematerra : >>>>>> On Tue, May 25, 2010 at 5:52 PM, David DEMELIER >>>>>> wrote: >>>>>>> 2010/5/25 Giovanni Trematerra : >>>>>>>> On Mon, May 24, 2010 at 9:43 PM, David DEMELIER >>>>>>>> wrote: >>>>>>>>> 2010/5/12 Giovanni Trematerra : >>>>>>>>>> On Fri, May 7, 2010 at 8:33 PM, Demelier David wrote: >>>>>>>>>>> Le Vendredi 07 mai 2010 =C3=A0 18:22 +0200, Giovanni Trematerra= a =C3=A9crit : >>>>>>>>>>>> On Fri, May 7, 2010 at 2:08 PM, Demelier David wrote: >>>>>>>>>>>> > Hi, >>>>>>>>>>>> > =C2=A0 =C2=A0 =C2=A0 =C2=A0I noticed that pluggin the AC ada= ptor when I boot without it does not >>>>>>>>>>>> > =C2=A0 =C2=A0 =C2=A0 =C2=A0panic. It only panic when removin= g it. >>>>>>>>>>>> > >>>>>>>>>>>> > =C2=A0 =C2=A0 =C2=A0 =C2=A0Maybe that could help ? >>>>>>>>>>>> > >>>>>>>>>>>> >>>>>>>>>>>> Good to know. The problem lies somewhere when performance stat= e change. >>>>>>>>>>>> In your case it happens when you remove AC adaptor. Let's hope= someone on >>>>>>>>>>>> acpi@ ml comes up with a good idea. >>>>>>>>>>>> >>>>>>>>>>> >>>>>>>>>>> Okay so for the moment no change, I'll wait for someone with an= idea >>>>>>>>>>> that could solve my problem. For me because the panic only happ= ens when >>>>>>>>>>> changing profile from ac plugged -> ac unplugged (and not the r= everse) I >>>>>>>>>>> would think it's a cpu related acpi issue. >>>>>>>>>>> >>>>>>>>>> >>>>>>>>>> I looked deeper and it seems to me that when you unplug the AC >>>>>>>>>> adapter, acpi_cpu_notify calls acpi_cpu_cx_cst that try to alloc= ate a >>>>>>>>>> new cx_ptr->p_lvlx =C2=A0via acpi_PkgGas. >>>>>>>>>> If acpi_PkgGas set cx_ptr->p_lvlx to NULL for any reasons you'll= have >>>>>>>>>> the panic that you reported. >>>>>>>>>> A solution would be to set acpi_cpu_hook to NULL so acpi_cpu_idl= e won't call it. >>>>>>>>>> I need some time to have a patch because of the possible race be= tween >>>>>>>>>> acpi_cpu_notify and >>>>>>>>>> acpi_cpu_idle during set acpi_cpu_hook to NULL. >>>>>>>>>> if you have time and want panic your system you could try the at= tached >>>>>>>>>> patch, just to be >>>>>>>>>> sure that we catch it. >>>>>>>>>> >>>>>>>>> >>>>>>>>> Hi, it paniced today ! I don't know why it randomly panic but it = did, >>>>>>>>> the backtrace didn't change. There is a picture about the panic : >>>>>>>>> >>>>>>>>> http://img541.imageshack.us/img541/2773/dsc00388xa.jpg >>>>>>>> >>>>>>>> What was you trying? acpi_idle5.diff.txt patch? >>>>>>>> How did it panic? Unplugging AC adapter? >>>>>>>> >>>>>>> >>>>>>> Hi, I tried this one : lvlx.diff.txt. Yes by unplugging the AC adap= ter. >>>>>>> >>>>>> >>>>>> This is an old one. Could you try acpi_idle5.diff.txt? I kept you in >>>>>> Cc when I sent to >>>>>> the list. If you have problems, let me know, I'll resend to you =C2= =A0the patch. >>>>>> >>>>>> Thank you. >>>>>> >>>>> >>>>> Hi, it panic'ed with the same backtrace. >>>>> >>>> >>>> Can you please post your dmesg? >>>> >>> >>> Sent ! >> >> As your PC is in a good mood to make test, :) >> could you try this patch? >> >> Thank you >> >> -- >> Gianni >> > > Here the patch :( > Sorry, still the same :-( --=20 Demelier David