[asterisk-users] puzzle

[Jeff LaCoursiere]

Yes, the second 'ps' below showed the parent to be '1' (init), which means 
its real parent died already.

Any attempt to flush the iptables hangs :(

j

On Wed, 19 Nov 2008, Danny Nicholas wrote:

> Have you done a ps -elf to see if the process has a parent that is
> re-launching or preserving it?
>
> -----Original Message-----
> From: asterisk-users-bounces at lists.digium.com
> [mailto:asterisk-users-bounces at lists.digium.com] On Behalf Of Jeff
> LaCoursiere
> Sent: Wednesday, November 19, 2008 1:58 PM
> To: asterisk-users at lists.digium.com
> Subject: [asterisk-users] puzzle
>
>
> Sorry again for the only marginal relation to asterisk, but the issue does
> affect the voice performance I am experiencing, so I am soothing my guilt
> with that.
>
> Bet you don't see this every day:
>
> ast% uptime
>  13:48:08 up 981 days, 18:29,  1 user,  load average: 1.08, 1.02, 1.01
> ast%
>
> I *REALLY* want this machine to see 1000 days uptime, if for nothing other
> than bragging rights.  Its been through mysql and asterisk upgrades, a
> horrible hacking nightmare that very nearly made me reboot, and several
> power outages where the batteries lasted JUST long enough to keep her up.
>
> After all of this, I find I may have to reboot after all.  Because there
> is a !$@#% process running, consuming 100% CPU (note the load average),
> and I cannot seem to kill it:
>
> ast% ps auxw | grep modprobe
> root     17744 99.9  0.0  2688  412 ?        RN   Nov03 23223:01 modprobe
> -r ipt_state
> ast% ps ealx | grep modprobe | grep -v grep
> 4     0 17744     1  39  19  2688  412 -      RN   ?        23223:38
> modprobe -r ipt_state
> ast% sudo kill 17744
> ast% sudo kill 17744
> ast% sudo kill -9 17744
> ast% sudo kill -9 17744
> ast% !ps
> ps ealx | grep modprobe | grep -v grep
> 4     0 17744     1  39  19  2688  412 -      RN   ?        23224:41
> modprobe -r ipt_state
> ast%
>
> You may also notice that I tried "renice" to bump it all the way to +19
> and still it consumes 100% of the CPU.  The result for asterisk is that I
> hear bits of robot noise during conversations, which is annoying as hell
> but not neccessarily show stopping.  But for another 19 days??  Argg!
>
> I assume that because it is 'modprobe' it has tickled some kernel bug that
> is merrily spinning away and won't respond to interrupts.  I even tried to
> stop it with gdb and strace, both of which also hung and had to be killed
> with -9.
>
> It seems to be related to me screwing with the iptables a few weeks ago.
>
> Any ideas other than rebooting?
>
> Cheers,
>
> j
>
>
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