Bug 86972

Summary:	module cipcb crashes with uhc-hcd module, it gives an Oops and Kernel panic: Fatal exception in interrupt
Product:	Gentoo Linux	Reporter:	Sascha Wuestemann <bigfoot>
Component:	[OLD] Core system	Assignee:	Mobile Herd (OBSOLETE) <mobile+disabled>
Status:	VERIFIED TEST-REQUEST
Severity:	critical
Priority:	High
Version:	unspecified
Hardware:	x86
OS:	Linux
Whiteboard:
Package list:		Runtime testing required:	---
Attachments:	Full log of the kernel Oops from a telnet session

Description Sascha Wuestemann 2005-03-28 05:56:12 UTC

I am using kernel 2.6.8-rc4. I have an usb-wlan network interface supported by the CVS drivers of http://at76c503a.berlios.de. Modprobing uhci-hcd works fine and it also kernel-autmatically loads the wlan modules:
---cut-on---
USB Universal Host Controller Interface driver v2.2
uhci_hcd 0000:00:07.2: Intel Corp. 82371AB/EB/MB PIIX4 USB
uhci_hcd 0000:00:07.2: irq 11, io base 00006400
uhci_hcd 0000:00:07.2: new USB bus registered, assigned bus number 1
hub 1-0:1.0: USB hub found
hub 1-0:1.0: 2 ports detected
usb 1-1: new full speed USB device using address 2
/home/cvs/sascha/at76c503a/at76_usbdfu.c: USB Device Firmware Upgrade (DFU) handler v0.12beta23-static loading
/home/cvs/sascha/at76c503a/at76c503.c: Generic Atmel at76c503/at76c505 routines v0.12beta23-static
/home/cvs/sascha/at76c503a/at76c503-fw_skel.c: Atmel at76c503 (RFMD) Wireless LAN Driver v0.12beta23-static loading
/home/cvs/sascha/at76c503a/at76c503-fw_skel.c: using compiled-in firmware
/home/cvs/sascha/at76c503a/at76c503.c: $Id: at76c503.c,v 1.74 2005/03/08 01:33:14 jal2 Exp $ compiled Mar 26 2005 16:43:04
/home/cvs/sascha/at76c503a/at76c503.c: firmware version 1.101.2 #84 (fcs_len 4)
/home/cvs/sascha/at76c503a/at76c503.c: device's MAC 00:06:f4:02:90:f4, regulatory domain ETSI (Europe - (Spain+France) (id 48)
/home/cvs/sascha/at76c503a/at76c503.c: registered wlan0
usbcore: registered new driver at76c503-rfmd
---cut-off---

whenever I load the cipe modules http://sites.inka.de/sites/bigred/devel/cipe.html I get the Oops.

Is this a kernel module bug of uhci-hcd and what should I do?

Reproducible: Always
Steps to Reproduce:
1.modprobing uhc-hcd
2.waiting for at76c503 modules to be ready loaded
3.modprobing cipe modules and configuring the interfaces.

Actual Results:  
Kernel Oops, see the attachement.

Expected Results:  
work fine.

Gentoo Base System version 1.6.7
Portage 2.0.51.18 (default-linux/x86/2004.0, gcc-3.3.4, glibc-2.3.4.20041102-r0,
2.6.8-rc4.0 i586)
=================================================================
System uname: 2.6.8-rc4.0 i586 AMD-K6(tm) 3D processor
Python:              dev-lang/python-2.2.3-r1,dev-lang/python-2.3.4 [2.3.4 (#1,
Jun 16 2004, 00:56:44)]
ccache version 2.3 [enabled]
dev-lang/python:     2.2.3-r1, 2.3.4
sys-devel/autoconf:  2.13, 2.59-r6
sys-devel/automake:  1.9.3, 1.8.5-r2, 1.7.9, 1.5, 1.4_p6, 1.6.3
sys-devel/binutils:  2.15.92.0.2-r1
sys-devel/libtool:   1.5.10-r1
virtual/os-headers:  2.4.19-r1, 2.4.22
ACCEPT_KEYWORDS="x86 ~x86"
AUTOCLEAN="yes"
CFLAGS="-march=k6-3 -O3 -pipe -fomit-frame-pointer"
CHOST="i586-pc-linux-gnu"
CONFIG_PROTECT="/etc /usr/X11R6/lib/X11/xkb /usr/kde/2/share/config
/usr/kde/3.1/share/config /usr/kde/3.3/share/config /usr/kde/3/share/config
/usr/lib/mozilla/defaults/pref /usr/
share/config /usr/share/texmf/dvipdfm/config/ /usr/share/texmf/dvips/config/
/usr/share/texmf/tex/generic/config/ /usr/share/texmf/tex/platex/config/
/usr/share/texmf/xdvi/ /var/bi
nd /var/qmail/control"
CONFIG_PROTECT_MASK="/etc/gconf /etc/terminfo /etc/env.d"
CXXFLAGS="-march=k6-3 -O3 -pipe -fomit-frame-pointer"
DISTDIR="/usr/portage/distfiles"
FEATURES="autoaddcvs autoconfig ccache distlocks sandbox sfperms userpriv"
GENTOO_MIRRORS="http://distfiles.gentoo.org
http://distro.ibiblio.org/pub/Linux/distributions/gentoo"
LANG="de_DE"
MAKEOPTS="-j2"
PKGDIR="/usr/portage/packages"
PORTAGE_TMPDIR="/usr/tmp2"
PORTDIR="/usr/portage"
SYNC="rsync://rsync.europe.gentoo.org/gentoo-portage"
USE="x86 3dnow X X509 Xaw3d aalib acpi alsa apache2 apm arts audiofile avi
berkdb bindist bitmap-fonts cdr chroot crypt cscope cups curl curlwrappers
dedicated doc dvd dvdr emboss 
encode esd ethereal fam fastcgi flac flash font-server foomaticdb fortran
freetds gd gdbm ggi gif gmp gphoto2 gpm gstreamer gtk gtk2 guile hardened icc
imagemagick imap imlib innod
b ipv6 java jikes jpeg kde lcms ldap lesstif libg++ libwww mad maildir mbox mcal
memlimit mikmod mmx motif mozilla mp3 mpeg mpi mysql nas ncurses nhc98 nls nocd
odbc offensive oggv
orbis opengl oss pam pcre pda pdflib perl png postgres ppds prelude python qt
quicktime readline samba sasl sdl serial skey slang slp snmp socks5 speex spell
ssl svga tcltk tcpd te
tex theora tiff truetype truetype-fonts type1-fonts unicode videos wmf wxwindows
xml xml2 xmms xosd xv zlib"
Unset:  ASFLAGS, CBUILD, CTARGET, LC_ALL, LDFLAGS, PORTDIR_OVERLAY

Comment 1 Sascha Wuestemann 2005-03-28 05:57:26 UTC

Created attachment 54667 [details]
Full log of the kernel Oops from a telnet session

Comment 2 Sascha Wuestemann 2005-03-30 10:02:08 UTC

In between I have stepped back to kernel v2.4.28-gentoo-r8 and I have no problems at all with usb, wlan and cipe, so my problem seem kernelrelated.

FYI: I have to compile the at76c503 cvs-version and cipe v1.6.0 against the running kernel and it sources to get the correspondig modules and binaries.

Do you think that I should post a bugreport to the kernel mailinglist, too?
Or do you think that this case is due to the gentoo kernel patches?

regards,
Sascha

Comment 3 Henrik Brix Andersen 2005-04-26 11:58:08 UTC

Please see if net-wireless/at76c503a-0.12_beta19 fixes this issue.

Comment 4 Henrik Brix Andersen 2005-05-21 14:28:41 UTC

Closing due to lack of feedback.