From mboxrd@z Thu Jan 1 00:00:00 1970 From: Dominik Brodowski Subject: Re: ec locking issue Date: Wed, 21 Feb 2007 20:04:46 -0500 Message-ID: <20070222010446.GA30143@isilmar.linta.de> References: <20070215192616.GA31595@isilmar.linta.de> <45D4BF92.5050401@linux.intel.com> <200702161254.55430.lenb@kernel.org> <20070219134431.GG9283@isilmar.linta.de> <20070219214502.GA19762@isilmar.linta.de> <45DB3CE4.8090001@linux.intel.com> <20070220195901.GA21920@isilmar.linta.de> <45DB711D.6090303@linux.intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Received: from isilmar.linta.de ([213.239.214.66]:37827 "EHLO linta.de" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1945933AbXBVBEt (ORCPT ); Wed, 21 Feb 2007 20:04:49 -0500 Content-Disposition: inline In-Reply-To: <45DB711D.6090303@linux.intel.com> Sender: linux-acpi-owner@vger.kernel.org List-Id: linux-acpi@vger.kernel.org To: Alexey Starikovskiy Cc: Len Brown , linux-acpi@vger.kernel.org Hi, On Wed, Feb 21, 2007 at 01:07:25AM +0300, Alexey Starikovskiy wrote: > Dominik Brodowski wrote: > >Hi, > > > >On Tue, Feb 20, 2007 at 09:24:36PM +0300, Alexey Starikovskiy wrote: > > > >>>On Mon, Feb 19, 2007 at 08:44:31AM -0500, Dominik Brodowski wrote: > >>> > >>> > >>>>On Fri, Feb 16, 2007 at 12:54:55PM -0500, Len Brown wrote: > >>>> > >>>> > >>>>>>>acpi_ec_transaction > >>>>>>>acpi_ec_read > >>>>>>>acpi_ec_space_handler > >>>>>>>acpi_ev_address_space_dispatch > >>>>>>>acpi_ex_access_region > >>>>>>>acpi_ex_field_datum_ > >>>>>>>acpi_ex_extract_from_field > >>>>>>>... > >>>>>>>acpi_ex_ns_evaluate > >>>>>>>acpi_ev_execute_reg_method > >>>>>>>acpi_ev_reg_run > >>>>>>>acpi_ns_walk_namespace > >>>>>>>acpi_ev_execute_reg_methods > >>>>>>>acpi_install_address_space_handler > >>>>>>>acpi_ec_start > >>>>>>>acpi_start_single_object > >>>>>>>acpi_device_probe > >>>>>>>really_probe > >>>>>>>... > >>>>>>>bus_add_driver > >>>>>>>... > >>>>>>>acpi_ec_init > >>>>>>> > >>>>>>> > >>>>>Alexey, > >>>>>Thanks for the fix -- it is applied. > >>>>> > >>>>>Dominik, > >>>>>Did this fix help, or is the problem elsehwere? > >>>>> > >>>>> > >>>>Unfortunately, this doesn't solve the issue for me -- now I get a panic > >>>>with > >>>>EIP at __list_add+0x2d/0x60, with the call trace being > >>>> > >>>> ... > >>>> die > >>>> do_page_fault > >>>> error_code > >>>> __mutex_lock_slowpath > >>>> mutex_lock > >>>> acpi_ec_transaction > >>>> > >>>>and then the same as above... Will try it out with lockdep disabled. > >>>> > >>>> > >>>No, doesn't seem to be lockdep-related; same issue continues. "acpi=off" > >>>fixes the issue, though, of course... > >>> > >>>Thanks, > >>> Dominik > >>> > >>> > >>Dominik, > >>Could you send your acpidump and full dmesg please? > >> > > > >http://userweb.kernel.org/~brodo/acpidump.binary > >http://userweb.kernel.org/~brodo/acpidump.txt > >http://userweb.kernel.org/~brodo/acpi-dmsg.txt > > > >Hope this helps, > > Dominik > > > Thanks. > I start to think, that ec is either not fully initialized or freed by > the time acpi_ec_start is called... Please try if the following patch > changes something. No change, unfortunately. Thanks, Dominik