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

[Stephan Zimmermann <s.zimmermann@domain.hid>]

Jan Kiszka schrieb:
> 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?

Kernel was freshly patched with:

./ksrc/arch/i386/patches/adeos-ipipe-2.6.20-i386-1.7-02.patch

the one from svn rev. 2222

> 
>> --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?

Test was run at 10KHz, but stack-debugging wasn't on, I will repeat it 
and post again...

> Jan
>