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Re: [Xen-devel] Kernel panic while compiling kernel

To: "Tvrtko A. Uršulin" <tvrtko@xxxxxxxxxxxx>
Subject: Re: [Xen-devel] Kernel panic while compiling kernel
From: Keir Fraser <Keir.Fraser@xxxxxxxxxxxx>
Date: Thu, 12 Feb 2004 09:44:32 +0000
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> getting yesterday in DOM0 (although different address)
> - it restarts and restarts until it manages to survive the boot process
> - domain-1.log is the complete log until domain is successfully booted 
> - then I torture it a little, some from DOM0 some from DOMx
> - after few disk i/o and cpu tests everything is working stable ( find / 
> -exec 
> ls -l {} \; , bzip2-c /dev/zero >/dev/null )
> - then I started yast2 runlevel editor (gave me 100% panic probability 
> yesterday) - the same, panic
> - domain-2.log is the log starting with panic caused by runlevel editor 
> followed by one unsuccessful boot (again)
> - then I tried to run runlevel editor in DOM0:
> DOM0: Kernel panic: Failed mmu update: c013eea8, 4
> Domain 0 killed: rebooting machine!
> 
> So, I was unable to find the exact load pattern which causes the crash. But 
> if 
> there is any test you want me to do I will be glad to do it.

Whoops. I forgot that in Xen 1.2, to get useful memory debugging you
will need to edit common/memory.c and enable MEM_LOG() (change '#if 0'
to '#if 1').

I'll try to find some time to do a bit of testing myself today.

 -- Keir


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