Return-path: Received: from tac.ki.iif.hu ([193.6.222.43]:36504 "EHLO tac.ki.iif.hu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754454AbZJMUpQ (ORCPT ); Tue, 13 Oct 2009 16:45:16 -0400 From: Ferenc Wagner To: linux-kernel@vger.kernel.org Cc: ipw2100-devel@lists.sourceforge.net, linux-wireless@vger.kernel.org, Reinette Chatre Subject: Re: 2.6.32-rc4 ipw2200: oops on missing firmware References: <87hbu3h023.fsf@tac.ki.iif.hu> <200910131855.25878.elendil@planet.nl> Date: Tue, 13 Oct 2009 22:22:06 +0200 In-Reply-To: <200910131855.25878.elendil@planet.nl> (Frans Pop's message of "Tue, 13 Oct 2009 18:55:24 +0200") Message-ID: <873a5n59jl.fsf@tac.ki.iif.hu> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Sender: linux-wireless-owner@vger.kernel.org List-ID: Frans Pop writes: > Adding relevant CCs. Thanks. Meanwhile I checked that the ipw2200 module can indeed be removed and reinserted into the running system without problems, here's the relevant part of dmesg: [ 5837.082811] ipw2200: Firmware error detected. Restarting. [ 5840.507981] ipw2200: Firmware error detected. Restarting. [ 5886.248174] ipw2200 0000:02:02.0: PCI INT A disabled [ 5919.283775] ipw2200: Intel(R) PRO/Wireless 2200/2915 Network Driver, 1.2.2kmprq [ 5919.283782] ipw2200: Copyright(c) 2003-2006 Intel Corporation [ 5919.283879] ipw2200 0000:02:02.0: PCI INT A -> Link[LNKF] -> GSI 11 (level, low) -> IRQ 11 [ 5919.285697] ipw2200: Detected Intel PRO/Wireless 2200BG Network Connection [ 5919.285771] ipw2200 0000:02:02.0: firmware: requesting ipw2200-bss.fw [ 5919.466323] ipw2200: Detected geography ZZR (14 802.11bg channels, 0 802.11a channels) [ 5919.477923] udev: renamed network interface eth0 to wlan [ 5982.543067] ipw2200: Firmware error detected. Restarting. [ 5985.850947] ipw2200: Firmware error detected. Restarting. [ 5989.170633] ipw2200: Firmware error detected. Restarting. [ 5992.479084] ipw2200: Firmware error detected. Restarting. [ 5995.786495] ipw2200: Firmware error detected. Restarting. [ 5999.099022] ipw2200: Firmware error detected. Restarting. [ 6003.193188] QoS Error need to parse QOS_PARAMETER IE [ 6029.106407] ipw2200: Firmware error detected. Restarting. [ 6032.415272] ipw2200: Firmware error detected. Restarting. Yes, I continuously get firmware errors, and occasionally the QoS error. I'm using firmware version 3.1, but these are probably irrelevant for this bug report. > Original message follows. > ============== > Hi, > > See the screenshot at http://apt.niif.hu/ipw_oops.png. During bootup, > initramfs-tools tried to load the ipw2200 module, but nobody fed it > the necessary firmware, so request_firmware timed out and the module > unload cleanup oopsed in device_pm_remove: > > void device_pm_remove(struct device *dev) > { > pr_debug("PM: Removing info for %s:%s\n", > dev->bus ? dev->bus->name : "No Bus", > kobject_name(&dev->kobj)); > mutex_lock(&dpm_list_mtx); > list_del_init(&dev->power.entry); > mutex_unlock(&dpm_list_mtx); > pm_runtime_remove(dev); > } > > 00000a0a : > a0a: 55 push %ebp > a0b: 89 e5 mov %esp,%ebp > a0d: 53 push %ebx > a0e: 89 c3 mov %eax,%ebx > a10: b8 08 00 00 00 mov $0x8,%eax > a15: e8 fc ff ff ff call a16 > a1a: 8d 4b 5c lea 0x5c(%ebx),%ecx > a1d: 8b 53 5c mov 0x5c(%ebx),%edx > a20: 8b 43 60 mov 0x60(%ebx),%eax > a23: 89 42 04 mov %eax,0x4(%edx) > a26: 89 10 mov %edx,(%eax) > a28: 89 4b 5c mov %ecx,0x5c(%ebx) > a2b: 89 4b 60 mov %ecx,0x60(%ebx) > a2e: b8 08 00 00 00 mov $0x8,%eax > a33: e8 fc ff ff ff call a34 > a38: 89 d8 mov %ebx,%eax > a3a: e8 fc ff ff ff call a3b > a3f: 5b pop %ebx > a40: 5d pop %ebp > a41: c3 ret > > The offending IP translates to line a23, so the problem is edx being 0 > at that point. I'm not sure which struct device field has offset > 0x5c, maybe power, but I'm lost at this point anyway. > > I don't know whether it's a new bug or not, never did such insane > things previously. rmmod ipw2200 definitely worked under 2.6.31, and > it's possible that it works under 2.6.32-rc4 too, I forgot to check > that (but will do so tonight). > > -- > Regards, > Feri.