Very Computer

by **Robert A. Bo** » Fri, 23 Mar 2001 16:47:51

Within the past few days, I'm getting really strange things happening.
I'm sitting here in front of the screen, everything seems normal, and
all of a sudden the X server exits, dumps me back to the (text)
console, and starts giving me errors like this:

init: PANIC: segmentation violation at 0x10202! sleeping for 30 seconds.
init: PANIC: segmentation violation at 0xfffffff7! sleeping for 30 seconds.

These errors always seem to come in pairs. And, nothing seems to
actually stop for 30 seconds...

I figure (having used Windows for too long :-( ) that if I reboot,
everything will be fine, but after one of these errors, the shutdown
command doesn't work! I type "shutdown -r now" or "shutdown -h now" I
get the "broadcast message" saying "system going down NOW!" but
nothing actually happens. I press enter, and get another shell
prompt. Ctrl-Alt-Del doesn't work, either. It doesn't matter if I
type this as root or with my regular userid (which is authorized to
run shutdown).

So, I have no choice (that I know of) other than a hard reboot --
which of course causes fsck to run, which, for the first time since
I've been using Linux regularly (about 1.5 years) actually shows
errors. The lost clusters always turn out to be fragments of
/etc/dhcpd.leases ....

My setup:
Red Hat 6.0 (kernel 2.2.5-15) on a Pentium II/350.
Cable modem on eth0 (as a DHCP client, using pump)
Another computer via crossover cable on eth1 (as a DHCP server using dhcpd)

Any ideas?

--Robert Book

by **Christof Schwenze** » Sat, 24 Mar 2001 00:19:18

> Within the past few days, I'm getting really strange things happening.
> I'm sitting here in front of the screen, everything seems normal, and
> all of a sudden the X server exits, dumps me back to the (text)
> console, and starts giving me errors like this:

> init: PANIC: segmentation violation at 0x10202! sleeping for 30 seconds.
> init: PANIC: segmentation violation at 0xfffffff7! sleeping for 30 seconds.

> These errors always seem to come in pairs. And, nothing seems to
> actually stop for 30 seconds...

> I figure (having used Windows for too long :-( ) that if I reboot,
> everything will be fine, but after one of these errors, the shutdown
> command doesn't work! I type "shutdown -r now" or "shutdown -h now" I
> get the "broadcast message" saying "system going down NOW!" but
> nothing actually happens. I press enter, and get another shell
> prompt. Ctrl-Alt-Del doesn't work, either. It doesn't matter if I
> type this as root or with my regular userid (which is authorized to
> run shutdown).

The shutdown procedure tries to terminate all processes/services
Oviously there is one process which cannot be terminated.
find it out with
ps xa | more

IN the third column you see attributes of the processes
e.g. S for sleep, R for running
Maybe one of the processes has the attribute "D"
which means "uninterruptible sleep"
this is normally related to a hardware/driver problem .
I had similar problems with several ethernet cards half a year ago.
The problems were solved when better drivers came aout.

Upgrading to a newer kernel might helpin your situation

In this case upgrading to new kernel might be a good idea

by **el..** » Sat, 24 Mar 2001 03:41:51

Quote:>> Within the past few days, I'm getting really strange things happening.
>> I'm sitting here in front of the screen, everything seems normal, and
>> all of a sudden the X server exits, dumps me back to the (text)
>> console, and starts giving me errors like this:

>> init: PANIC: segmentation violation at 0x10202! sleeping for 30 seconds.
>> init: PANIC: segmentation violation at 0xfffffff7! sleeping for 30 seconds.

>> These errors always seem to come in pairs. And, nothing seems to
>> actually stop for 30 seconds...

>> I figure (having used Windows for too long :-( ) that if I reboot,
>> everything will be fine, but after one of these errors, the shutdown
>> command doesn't work! I type "shutdown -r now" or "shutdown -h now" I
>> get the "broadcast message" saying "system going down NOW!" but
>> nothing actually happens. I press enter, and get another shell
>> prompt. Ctrl-Alt-Del doesn't work, either. It doesn't matter if I
>> type this as root or with my regular userid (which is authorized to
>> run shutdown).
>The shutdown procedure tries to terminate all processes/services
>Oviously there is one process which cannot be terminated.
>find it out with
> ps xa | more

No, the "shutdown procedure" is run by init and in this case init
isn't working.

--
http://www.spinics.net/linux/