Re: [Xenomai-help] fata: removing non-linked element...

[Jan Kiszka <jan.kiszka@domain.hid>]

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Stephan Zimmermann wrote:
> Hm, updated my machines to 2.6.20 and 2.3.0 rev 2222. I still see ( less
> frequent?) some backtraces occuring on my console, either during reboot
> or sometimes when running the testprogram and reloading the modules.(see
> dmesg snippet below) The Celeron M still crashes often totally.
> 
> My main-application still freezes the SMP mashines if I have 'priority
> coupling' enabled in kernel-config. Using trunk makes things even worse.
> The pc will crash during startup of my app, the testapp I sendt you
> works, but i can not shutdown the pc afterwards, because it freezes
> completely when terminating kdm.
> 
> Stephan
> 
> 
> 
> dmesg tells me the following (2.3.0.2222, 2.6.20, SMP):

Latest I-pipe version?

> 
> --snip--
> Bad page state in process 'kswapd0'
> page:c17f3060 flags:0x80010408 mapping:00000000 mapcount:0 count:0
> Trying to fix it up, but a reboot is needed

Something is corrupting kernel memory.

I did some remark on your test, let's get back to it: You are running
the test at 100 kHz. That /may/ have side-effects like overload, or it
might actually trigger some stack overrun. Did you enable the stack
checks? Can you confirm the problem occurs also at slower tick rates?

Jan


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