Re: [XenPPC] vcpu-list panic

[Hollis Blanchard <hollisb@xxxxxxxxxx>]

On Wed, 2006-09-06 at 14:56 -0500, Hollis Blanchard wrote:
> On Wed, 2006-09-06 at 14:44 -0400, Amos Waterland wrote:
> > Using current xen.hg and linux.hg, I get this when I try to 
> > run `xm vcpu-list':
> > 
> > (XEN) ****************************************
> > (XEN) Panic on CPU 0:
> > (XEN) paddr_to_maddr: Dom:0 paddr: 0xf5d5ecc0 bad type:0x3
> > (XEN) ****************************************
> > (XEN) 
> > (XEN) Reboot in five seconds...
> > 
> > Note that `xm list' works fine.  The 0xf5d5ecc0 address is consistent
> > across boots.
> 
> I see the same thing. The backtrace is:
> #0  panic (fmt=0x456d10 "%s: Dom:%d paddr: 0x%lx bad type:0x%x\n")
>     at console.c:610
> #1  0x00000000004459bc in paddr_to_maddr (paddr=0xf6fb7278) at usercopy.c:65
> #2  0x000000000044619c in xencomm_handle_is_null (ptr=0xf6fb7278)
>     at usercopy.c:265
> #3  0x0000000000401c58 in cpumask_to_xenctl_cpumap (xenctl_cpumap=0xfaa8,
>     cpumask=0xb7e178) at domctl.c:36
> #4  0x0000000000403348 in do_domctl (u_domctl={__pad = 0xfc20, p = 0x7d04000})
>     at domctl.c:396
> #5  0x00000000004373c4 in hcall_xen (num=0x24, regs=0xfd90) at hcalls.c:76
> #6  0x00000000004374e0 in do_hcall (regs=0xfd90) at hcalls.c:104
> #7  0x0000000000449d34 in ex_hcall_continued () at misc.h:31

OK, the problem was that the vcpuaffinity calls had a hidden handle that
wasn't being mapped. I believe I've fixed this now with Linux changeset
efefb3db340a.

-- 
Hollis Blanchard
IBM Linux Technology Center


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