Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S262656AbTESSuU (ORCPT ); Mon, 19 May 2003 14:50:20 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S262657AbTESSuU (ORCPT ); Mon, 19 May 2003 14:50:20 -0400 Received: from mx1.mail.ru ([194.67.23.21]:18193 "EHLO mx1.mail.ru") by vger.kernel.org with ESMTP id S262656AbTESSuR (ORCPT ); Mon, 19 May 2003 14:50:17 -0400 Date: Sun, 18 May 2003 22:46:26 +0200 (CEST) From: Guennadi Liakhovetski Reply-To: Guennadi Liakhovetski To: linux-kernel@vger.kernel.org Subject: USB-Oops 2.4.20 printer, strangely involving ppp Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 3932 Lines: 83 Hi Knowing it most probably would be of low value / interest I still decided to post this Oops, in case I am wrong. A short description - I generally have problems with my USB-printer (Lexmark Z25), whereby it corrupts images, a remedy seems to be to reload usb-modules, restart hotplug, lpd. So, when I tried to do this on this occasion I got the Oops below. The sad thing is it is not easily reproducible. I've had it a couple of times before, often (if not always) in relation with ppp... But when I tried to attack it, I couldn't get it anymore:-) So, here goes (extract from /var/log/messages): usb.c: USB disconnect on device 00:07.2-0 address 1 klogd 1.4.1, ---------- state change ---------- Inspecting /boot/System.map-2.4.20 Loaded 14930 symbols from /boot/System.map-2.4.20. Symbols match kernel version 2.4.20. Loaded 594 symbols from 38 modules. usb.c: USB bus 1 deregistered usb.c: USB disconnect on device 00:07.3-0 address 1 usb.c: USB bus 2 deregistered usb.c: deregistering driver usbdevfs usb.c: deregistering driver hub usb.c: registered new driver usbdevfs usb.c: registered new driver hub usb-uhci.c: $Revision: 1.275 $ time 20:12:08 Dec 29 2002 usb-uhci.c: High bandwidth mode enabled PCI: Found IRQ 3 for device 00:07.2 PCI: Sharing IRQ 3 with 00:07.3 usb-uhci.c: USB UHCI at I/O 0xd400, IRQ 3 usb-uhci.c: Detected 2 ports usb.c: new USB bus registered, assigned bus number 1 hub.c: USB hub found hub.c: 2 ports detected PCI: Found IRQ 3 for device 00:07.3 PCI: Sharing IRQ 3 with 00:07.2 usb-uhci.c: USB UHCI at I/O 0xd000, IRQ 3 usb-uhci.c: Detected 2 ports usb.c: new USB bus registered, assigned bus number 2 hub.c: USB hub found hub.c: 2 ports detected usb-uhci.c: v1.275:USB Universal Host Controller Interface driver hub.c: new USB device 00:07.2-2, assigned address 2 modprobe: Can't locate module evdev modprobe: Can't locate module joydev usb.c: USB device 2 (vend/prod 0x43d/0x57) is not claimed by any active driver. usb.c: registered new driver usblp printer.c: usblp0: USB Bidirectional printer dev 2 if 0 alt 0 proto 2 vid 0x043D pid 0x0057 printer.c: v0.11: USB Printer Device Class driver Using /lib/modules/2.4.20/kernel/drivers/usb/printer.o Symbol version prefix '' printer.c: usblp0: nonzero read/write bulk status received: -2 Unable to handle kernel NULL pointer dereference at virtual address 00000020 printing eip: d8b6b117 *pde = 00000000 Oops: 0002 CPU: 0 EIP: 0010:[ppp_deflate:__insmod_ppp_deflate_O/lib/modules/2.4.20/kernel/drivers/ne+-605929/96] Not tainted EFLAGS: 00010286 eax: d5d0fadc ebx: 00000000 ecx: 00000001 edx: 00000001 esi: d5d0fa20 edi: c8def140 ebp: d383ff00 esp: d383fefc ds: 0018 es: 0018 ss: 0018 Process hwscan (pid: 5389, stackpage=d383f000) Stack: 00000000 d383ff18 d8b54ad6 00000000 d5d0fa00 d5d0fa20 d7258080 d383ff34 d8b54cc0 d7258080 d5d0fa20 d5d0fa00 d5d0fa08 d7ffa300 d383ff40 d8b6b258 d5d0fa20 d383ff50 d8be6305 d5d0fa20 d5d0fa00 d383ff64 d8be633b d5d0fa00 Call Trace: [ppp_deflate:__insmod_ppp_deflate_O/lib/modules/2.4.20/kernel/drivers/ne+-697642/96] [ppp_deflate:__insmod_ppp_deflate_O/lib/modules/2.4.20/kernel/drivers/ne+-697152/96] [ppp_deflate:__insmod_ppp_deflate_O/lib/modules/2.4.20/kernel/drivers/ne+-605608/96] [ppp_deflate:__insmod_ppp_deflate_O/lib/modules/2.4.20/kernel/drivers/ne+-101627/96] [ppp_deflate:__insmod_ppp_deflate_O/lib/modules/2.4.20/kernel/drivers/ne+-101573/96] [fput+84/240] [filp_close+85/112] [sys_close+69/96] [system_call+51/56] Code: ff 4b 20 0f 94 c0 84 c0 74 27 8b 83 cc 00 00 00 8b 40 1c 53 /etc/hotplug/usb.agent: line 435: 5389 Segmentation fault /usr/sbin/hwscan --usb Guennadi --- Guennadi Liakhovetski - 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/