Bug#396741: gnumach: General protection trap on network load
Package: gnumach
Version: 20060826.dfsg.1-1
Severity: important
On high network traffic (usually when apt-getting some packages,
uploading things seems to trigger this much less likely), I get
sometimes get a Mach panic and subsequent reboot.
If I trap the panic with gnumach-dbg, I get (transcribed, so maybe
slightly inaccurate):
kernel General Protection tryp, eip 0x101cd7
kernel: General protection (13), code=0
Stopped at 0x101cd7: movl %exc, 0(%eax)
db> trace
0x101cd7(2ee918)
>>>>> Divide error (0) at 0 <<<<<
db> show registers
cs 0x8
ds 0x10
es 0x10
fs 0x1f
gs 0x10
ss 0x10
eax 0xffffff10
ecx 0x104af000
edx 0x104af000
esp 0x2efae4
ebp 0x2efae4
esi 0x1
edi 0x104af650
eip 0x101cd7
efl 0x10206
If I run addr2line on the gnumach kernel, I get:
buildd@beethoven:/boot$ addr2line -f -e gnumach-dbg 101cd7
ipc_kmsg_enqueue
../ipc/ipc_kmsg.c:83
This happened both on my HP Omnibook 6000 notebook with a Prism2 PCMCIA
WLAN as NIC, and on the buildd with an Intel PCI EtherExpress Pro100.
This currently makes the buildd reboot/hang every couple of hours. I
had one person apparently being able to reproduce this with vmware:
18:07 < gijzelaar> currently I use vmware, but I had the same problems
on a real machine
18:16 < gijzelaar> yessssssssss crash
18:16 < gijzelaar> Stopped at 0x101cd7
but nobody else seems to suffer from this yet. If you can reproduce
this, please follow-up to this bug report.
If anybody can tell me what else I could do to track this down, I'd be
happy to do that.
Michael
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