From owner-freebsd-stable@FreeBSD.ORG Wed May 26 09:34:16 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 9E2EC1065778 for ; Wed, 26 May 2010 09:34:16 +0000 (UTC) (envelope-from giovanni.trematerra@gmail.com) Received: from mail-fx0-f54.google.com (mail-fx0-f54.google.com [209.85.161.54]) by mx1.freebsd.org (Postfix) with ESMTP id 21ECB8FC19 for ; Wed, 26 May 2010 09:34:15 +0000 (UTC) Received: by fxm17 with SMTP id 17so1451498fxm.13 for ; Wed, 26 May 2010 02:34:15 -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=FXiHi4Bd+2WtN3au2uPZ8MuG6zoJZXo9IvCcPbuOnEM=; b=hvv56kzNz6zxJnLLXlVODCI6zG2Ox9MtSl416YMF6TRgPP/cNnmWDmLIf3JtCYjNtT +7hnCKL1GU/dXNx3FF1TTKFzBFnmIrPCKOJVXtOC72MGrLbN/sj0yNanaQoa8QhTHxos 8p5NdEM4MlleR+XovuY3amC2sKsEPjyTglxAg= 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=TCeZRG76n/gf/Fr1rTZ4Qja6pSyg8oYDhvmp2mlOpI/GGtHMjJDdrLwtU3/hqMfQHC lXf/c8DJ9xM6NCGn0YJXnG6JYrNZLs4NfmQTev7X3ns6DY6d1Qric/N1nSzsp3YvXMVQ SSP/8i9IzHgAyHPdVhDKML6iGpjhA23DMdydI= MIME-Version: 1.0 Received: by 10.223.27.84 with SMTP id h20mr7383802fac.31.1274866454920; Wed, 26 May 2010 02:34:14 -0700 (PDT) Received: by 10.223.103.209 with HTTP; Wed, 26 May 2010 02:34:14 -0700 (PDT) In-Reply-To: References: <4DEBDE2C-C0D2-469D-AC42-DD5027926424@FreeBSD.org> <20100507120843.GA1738@Melon.malikania.fr> <1273257226.1671.3.camel@malikania.fr> Date: Wed, 26 May 2010 11:34:14 +0200 Message-ID: From: Giovanni Trematerra To: David DEMELIER Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Cc: 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 09:34:16 -0000 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 =E0 18:22 +0200, Giovanni Trematerra a =E9c= rit : >>>>>>>> On Fri, May 7, 2010 at 2:08 PM, Demelier David wrote: >>>>>>>> > Hi, >>>>>>>> > =A0 =A0 =A0 =A0I noticed that pluggin the AC adaptor when I boot= without it does not >>>>>>>> > =A0 =A0 =A0 =A0panic. It only panic when removing it. >>>>>>>> > >>>>>>>> > =A0 =A0 =A0 =A0Maybe that could help ? >>>>>>>> > >>>>>>>> >>>>>>>> Good to know. The problem lies somewhere when performance state ch= ange. >>>>>>>> In your case it happens when you remove AC adaptor. Let's hope som= eone on >>>>>>>> acpi@ ml comes up with a good idea. >>>>>>>> >>>>>>> >>>>>>> Okay so for the moment no change, I'll wait for someone with an ide= a >>>>>>> that could solve my problem. For me because the panic only happens = when >>>>>>> changing profile from ac plugged -> ac unplugged (and not the rever= se) 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 allocate = a >>>>>> new cx_ptr->p_lvlx =A0via acpi_PkgGas. >>>>>> If acpi_PkgGas set cx_ptr->p_lvlx to NULL for any reasons you'll hav= e >>>>>> the panic that you reported. >>>>>> A solution would be to set acpi_cpu_hook to NULL so acpi_cpu_idle wo= n't call it. >>>>>> I need some time to have a patch because of the possible race betwee= n >>>>>> 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 attach= ed >>>>>> 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 adapter. >>> >> >> 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 =A0the p= atch. >> >> Thank you. >> > > Hi, it panic'ed with the same backtrace. > Can you please post your dmesg? Thanks -- Gianni