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Bug 58999 - khubd crash Traces
Summary: khubd crash Traces
Alias: None
Product: Gentoo Linux
Classification: Unclassified
Component: [OLD] Core system (show other bugs)
Hardware: x86 Linux
: High normal (vote)
Assignee: (DEPRECATED)
Depends on:
Reported: 2004-07-31 08:21 UTC by YbbY
Modified: 2004-09-05 06:22 UTC (History)
0 users

See Also:
Package list:
Runtime testing required: ---

relevant part of /var/log/messages (kernel.khubd.txt,5.36 KB, text/plain)
2004-07-31 08:22 UTC, YbbY
/var/log/messages (kernel.usb.scsi.txt,8.20 KB, text/plain)
2004-07-31 09:21 UTC, YbbY

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Description YbbY 2004-07-31 08:21:25 UTC

once again i got to reboot because of a usb problem. this time i got traces but don't ask for me to fully undestand them.

What i understand is that the khubd part of the kernel crashed a few seconds after i unpluged my ipaq. it is not systematic, i do not know how to reproduce, but atm any devices pluged on my USB hub stop working. the list of the modules for which devices were pluged on the hub is :

ppp_deflate             6336  0
zlib_deflate           23160  1 ppp_deflate
zlib_inflate           22592  1 ppp_deflate
iptable_filter          3104  0
ip_tables              18816  1 iptable_filter
ppp_async              14560  0
ppp_generic            42292  2 ppp_deflate,ppp_async
slhc                    7456  1 ppp_generic
ipaq                   13004  0
usbserial              27172  1 ipaq	<-- PDA
audio                  57696  0  	<- mic usb of the webcam
snd_usb_audio          76768  1
hci_usb                18368  0
pwcx                   88864  1       	<-- Philips Web Cam
pwc                    53008  1 pwcx  
ehci_hcd               35172  0
ohci_hcd               26628  0

usb device not on the hub :
usb_storage            33888  0  		<-- DVD-R

Hope it can help.

Regards, YbbY

Reproducible: Couldn't Reproduce
Steps to Reproduce:

Actual Results:  

pundit log # emerge info 
Portage 2.0.50-r9 (default-x86-1.4, gcc-3.3.3, glibc-, 
System uname: 2.6.7-gentoo-r11 i686 Intel(R) Celeron(R) CPU 2.40GHz 
Gentoo Base System version 1.4.16 
Autoconf: sys-devel/autoconf-2.59-r3 
Automake: sys-devel/automake-1.8.3 
CFLAGS="-O2 -march=pentium4 -mfpmath=sse -msse2 -mmmx -funroll-loops 
-fprefetch-loop-arrays -pipe -fPIC" 
CONFIG_PROTECT="/etc /usr/X11R6/lib/X11/xkb /usr/kde/2/share/config /usr/kde/3.2/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/qmail/control" 
CONFIG_PROTECT_MASK="/etc/gconf /etc/init.d /etc/terminfo /etc/env.d" 
CXXFLAGS="-O2 -march=pentium4 -mfpmath=sse -msse2 -mmmx -funroll-loops 
-fprefetch-loop-arrays -pipe -fPIC" 
FEATURES="autoaddcvs ccache fixpackages sandbox" 
USE="X aalib alsa apache2 apm arts artswrappersuid avi berkdb bluetooth bonobo 
cdr crypt cups debug dvd dvdr encode esd evo foomaticdb gdbm gif gnome gphoto2 
gpm gtk2 gtkhtml imlib irmc java jpeg kde ldap libg++ libwww lirc mad mikmod 
mmx motif mozilla mpeg mysql ncurses nls nowin oggvorbis opengl oss pam pda 
pdflib perl png ppds python qt readline samba sdl sis slang spell sse ssl svga 
tcltk tcpd tetex truetype usb v4l video_cards_sis x86 xml2 xmms xv xvid zlib"
Comment 1 YbbY 2004-07-31 08:22:27 UTC
Created attachment 36525 [details]
relevant part of /var/log/messages
Comment 2 YbbY 2004-07-31 09:21:55 UTC
Created attachment 36531 [details]

anaother strange thing happened to my USB DVD burner : it failed to mount, so i
switched it off , find here attached other traces.
reboot again....
Comment 3 Daniel Drake (RETIRED) gentoo-dev 2004-09-05 06:22:36 UTC
This looks like an upstream bug as opposed to a gentoo-dev-sources bug.

I'd suggest that you attempt to reproduce this on clean development-sources-2.6.9_rc1 or newer, without the pwc and pwcx modules linked in (i.e. try and get your USB DVD to crash the system again). If you compile USB debug and USB storage verbose debug support that may also help.
Once you have the newer messages with debug info, I'd suggest you either send a report to or file a bug at

If you can't reproduce this on a clean development-sources then it may well be a gentoo-dev-sources problem, if this is the case then please reopen this bug.