Re: 2.6.17-mm one process gets stuck in infinite loop in the kernel.

From: Helge Hafting
Date: Fri Jun 30 2006 - 08:50:57 EST


Andrew Morton wrote:
On Thu, 29 Jun 2006 13:25:20 +0200
Helge Hafting <helge.hafting@xxxxxxxxxxxxx> wrote:

I have seen this both with mm2, m33 and mm4.
Correction, m22 and mm3 only so far.
Suddenly, the load meter jumps.
Using ps & top, I see one process using 100% cpu.
This is always a process that was exiting, this tend to happen
when I close applications, or doing debian upgrades which
runs lots of short-lived processes.

I believe it is running in the kernel, ps lists it with stat "RN"
and it cannot be killed, not even with kill -9 from root.

Something wrong with process termination?


Please generate a kernel profile when it happens so we can see
where it got stuck.

<boot with profile=1>
<wait for it to happen>
Unfortunately, I could not provoke it with profile=1.
At least, deinstalling and reinstalling texlive
a few times was not enough.

If it bothers me more, I'll try to find a better way to reproduce it.
If it don't happen again, lets hope it was a hw hiccup.

Helge Hafting
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