Re: [XenPPC] domU bad page state

[Jimi Xenidis <jimix@xxxxxxxxxxxxxx>]

Believe it or not I document this warning here:
  http://wiki.xensource.com/xenwiki/XenPPC/Run/XM

so yes it is reproducible.
I think its a side effect from a large initrd and completely a linux  
bug, in fact you can google where others have the problem.
I believe you would get this from zIamge.initrd without Xen, but  
sadly I have lost the ability to boot without Xen on my maple.. I'll  
be taking a look at that later today.
-JX
On Aug 28, 2006, at 10:23 PM, Hollis Blanchard wrote:

> On Mon, 2006-08-28 at 22:13 -0400, Amos Waterland wrote:
> > Using tip of tree xen.hg and linux.hg, I get this when launching a  
> > domU:
> > Freeing initrd memory: 3141k freed
> > Bad page state in process 'swapper'
> > page:c00000000075d000 flags:0x0000100000080000 mapping: 
> > 0000000000000000 mapcount
> > :0 count:0
> > Trying to fix it up, but a reboot is needed
> > Backtrace:
> > Call Trace:
> > [C00000000081BBA0] [C00000000000F844] .show_stack+0x54/0x1f0  
> > (unreliable)
> > [C00000000081BC50] [C000000000094B60] .bad_page+0x70/0xd0
> > [C00000000081BCD0] [C00000000009574C] .free_hot_cold_page+0x1fc/0x210
> > [C00000000081BD70] [C0000000000332BC] .free_initrd_mem+0x10c/0x150
> > [C00000000081BE10] [C0000000004F08F0] .free_initrd+0x70/0x130
> > [C00000000081BEB0] [C0000000000092D8] .init+0x168/0x430
> > [C00000000081BF90] [C000000000028F54] .kernel_thread+0x4c/0x68
> >
> > The domU completes its boot fine and I am able to run programs etc.
> >
> > I'm using the dom1 config that Jimi published earlier.
> Hmm, I'm not sure what could cause this.
>
> How reproducible is it? Does it only happen once per domU boot? Always
> the same address/backtrace? Generally speaking, how old were the  
> builds
> you were using before (one day old? one week old?)?
>
> --
> Hollis Blanchard
> IBM Linux Technology Center
>
>
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