RE: [Xen-users] kernel panic on boot of dom0

["Ian Pratt" <m+Ian.Pratt@xxxxxxxxxxxx>]

> Ernst Bachmann wrote:
> > Had the same problem, disabling "SMT (Hyperthreading) scheduler 
> > support" (found in "Processor type and features") in the 
> domU kernel seems to 
> > work arround it.

I'm suspicious that this Oops is also due to a kernel config file
difference. What happens if you try a stock -xen kernel?

BTW, what kind of box is this? 

Thanks,
Ian
 
> Thanks very much! That's solved it and I can now boot.  On booting 
> though, there is a kernel opps -
> 
> e1000: eth0: e1000_watchdog_task: NIC Link is Up 100 Mbps Full Duplex
> Unable to read memory/target
> Unable to handle kernel NULL pointer dereference at virtual 
> address 00000000
>   printing eip:
> c03e0d86
> *pde = ma 00000000 pa 55555000
> Oops: 0002 [#1]
> SMP
> Modules linked in:
> CPU:    0
> EIP:    0061:[<c03e0d86>]    Not tainted VLI
> EFLAGS: 00010247   (2.6.12.6.5-xen)
> EIP is at cpu_up+0x0/0x133
> eax: 00000000   ebx: c1167f18   ecx: c1166000   edx: 00000000
> esi: c1167eff   edi: c0349905   ebp: 00000000   esp: c1167ee0
> ds: 007b   es: 007b   ss: 0069
> Process xenwatch (pid: 16, threadinfo=c1166000 task=c112aa20)
> Stack: c0107097 00000000 c1167f18 c03498f1 c0349e28 c1167ef8 696c6e6f 
> c400656e
>         ffffffff c1167f58 c02326a4 c4942e4c c1167f24 0000000a 
> 2f757063 
> ffff0030
>         00000001 c4942e4d c1167f8c c1167f98 c4942ec0 c1167f6c 
> c1167f8c 
> c1167f98
> Call Trace:
>   [<c0107097>] vcpu_hotplug+0x10c/0x111
>   [<c02326a4>] vsscanf+0x368/0x526
>   [<c01070df>] handle_vcpu_hotplug_event+0x43/0x47
>   [<c0291f49>] xenwatch_thread+0x10e/0x133
>   [<c0131922>] autoremove_wake_function+0x0/0x57
>   [<c0131922>] autoremove_wake_function+0x0/0x57
>   [<c0291e3b>] xenwatch_thread+0x0/0x133
>   [<c0131454>] kthread+0xba/0xf0
>   [<c013139a>] kthread+0x0/0xf0
>   [<c0107589>] kernel_thread_helper+0x5/0xb
> Code: 00 00 00 00 00 00 00 00 00 e7 bf 7c 0d f0 01 01 00 00 
> 00 00 00 00 
> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ed 81 00 00 6e 
> 00 <00> 00 
> 75 f8 77 43 76 f8 77 43 75 f8 77 43 00 00 00 00 00 00 01
> 
> 
> 
> Kind Regards,
> 
> 
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> 

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