Re: [uml-devel] Unable to handle kernel paging request ...

[BlaisorBlade <blaisorblade_spam@yahoo.it>]

Alle 11:06, mercoledì 7 luglio 2004, Michael Koehne ha scritto:
> Moin Guru's,
>
>   i have 2.6.x host crashes, and I dont know, if they are related to
>   UML. I have a perfectly running 2.4.22 SKAS system on a dual PPro,
>   and a laptop who requires a 2.6.x kernel because of hardware. This
>   laptop is prepared to run UML's - but it seldom does.

>   But the laptop crashes about once or twice a week. This sometimes
>   happens on operations like `find . -print | while read x; do diff
>   ../foo/$x $x; done` or rsync over large directory trees. And sometimes
>   on idle state - e.g. tonight at crontime with a 'postmaster' crash.
>   I've talked to people on IRC, and they dont encounter those kind of
>   ext3 crashes on 2.6 kernels. I dont had a camera for a screenshot,
>   but dump was in ext3 area.
What you mean with "ext3 crash"? "The dump was in ext3 area"? I don't 
understand you, sorry.

>   So it might be something with SKAS host patch - even if the system
>   also crashes, if no UML is running.
Well, the UML patch should have no influence, if you don't run UML on it (if 
it happens after you have run UML at least once, there is still a chance
>      33240033 Feb  3 06:41 linux-2.6.1.tar.bz2
>    +    15570 Feb  4 02:36 host-2.6.1-skas3.patch
>   or 34896138 May 25 20:45 linux-2.6.6.tar.bz2
>    +    16182 May 25 20:35 host-skas3-2.6.6-v1.patch

Well, since you experience them so often, try compiling a vanilla kernel, 
without the SKAS patch. Also, I'm highly suspicious of the 2.6.1 patch: it's 
likely it is an old, buggy version. Is that from Stephen D. Williams, 
distributed at this URL: http://sdw.st/src/uml/linux-2.6.1-skas3.patch? That 
is a buggy one, known to cause crashes... the second one is safe enough 
(though somebody experience memory leaks... as reported on 
http://www.user-mode-linux.org/~blaisorblade; however, they seldom happen).

-- 
Paolo Giarrusso, aka Blaisorblade
Linux registered user n. 292729



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