Re: [Xen-devel] Xen 3.1.2 + 2.6.23.8 == traps.c:403:d0 Unhandled invalid opcode fault/trap [#6] in domain 0 on VCPU 0 [ec=0000]

[Keir Fraser <Keir.Fraser@xxxxxxxxxxxx>]

Two compounded problems. Firstly, the 2.6.23 Xen support only works as domU,
not as dom0. Secondly, because the dom0 domain builder inside Xen sets a
'magic' string in start_info as 'xen-3.1-...' rather than 'xen-3.0-...' as
the user-space domain builder does, the 2.6.23 kernel BUG_ON()s very very
early when run as dom0.

I've cc'ed Jeremy as I believe the BUG_ON() should simply be got rid of (or
at least should perhaps only check for the 'xen-' prefix). But you're not
going to have any luck running that kernel as dom0 even if the offending
BUG_ON() is removed.

 -- Keir

On 19/11/07 18:00, "Christopher S. Aker" <caker@xxxxxxxxxxxx> wrote:

> Xen 3.1.2, 64bit + 2.6.23.8-pae for Dom0 gives me the following
> 
> (XEN) Freed 108kB init memory.
> (XEN) traps.c:403:d0 Unhandled invalid opcode fault/trap [#6] in domain
> 0 on VCPU 0 [ec=0000]
> (XEN) domain_crash_sync called from entry.S
> (XEN) Domain 0 (vcpu#0) crashed on cpu#0:
> (XEN) ----[ Xen-3.1.2  x86_64  debug=n  Not tainted ]----
> (XEN) CPU:    0
> (XEN) RIP:    e019:[<00000000c06402a8>]
> (XEN) RFLAGS: 0000000000000202   CONTEXT: guest
> (XEN) rax: 00000000c0703000   rbx: 0000000000000000   rcx: 0000000000000000
> (XEN) rdx: 0000000000000000   rsi: 00000000c0703007   rdi: 00000000c0579f44
> (XEN) rbp: 0000000000000000   rsp: 00000000c0633fd4   r8:  0000000000000000
> (XEN) r9:  0000000000000000   r10: 0000000000000000   r11: 0000000000000000
> (XEN) r12: 0000000000000000   r13: 0000000000000000   r14: 0000000000000000
> (XEN) r15: 0000000000000000   cr0: 000000008005003b   cr4: 00000000000026b0
> (XEN) cr3: 00000006209f3000   cr2: 0000000000000000
> (XEN) ds: e021   es: e021   fs: e021   gs: e021   ss: e021   cs: e019
> (XEN) Guest stack trace from esp=c0633fd4:
> (XEN)   c06402a8 0001e019 00010002 00000000 00000000 00000000 00000000
> 00000000
> (XEN)   00000000 c0703000 00000000 c0639736 c063973e c0639746 c01012c5
> c0101dab
> (XEN)   c0101df7 c0640890 c01020d7 c01024da c0640adf c0640b09 c0104455
> c0104475
> (XEN)   c01044b3 c0640b8f c0640c08 c0640c4c c0104937 c01049fb c0104a51
> c0104ad9
> (XEN)   c0104b57 c0104d25 c01052d8 c0105e6d c0106037 c0106057 c01063c1
> c0106444
> (XEN)   c01079d2 c0108da0 c0109685 c01096bb c0109a77 c0109a80 c0109ac0
> c0109acd
> (XEN)   c0109ae3 c0109dac c0109db5 c0109dc7 c0109e1b c0109e79 c0109e99
> c0109ea2
> (XEN)   c0109fb7 c0109fc9 c010a144 c010a1c4 c010a400 c010a688 c010a6de
> c010a7a1
> (XEN)   c010a8bb c010aa26 c010aa64 c06411fd c010ad13 c0642c71 c0642c79
> c06431ea
> (XEN)   c06431f3 c0643649 c06436d5 c064384e c0643b9a c0643ba9 c0643baf
> c0643bbe
> (XEN)   c0643bce c0643e6c c06441f8 c064449a c06444f8 c064450e c064451c
> c064452b
> (XEN)   c064454a c0644663 c064473e c06447bc c06447c2 c0644bcd c0644be2
> c0644bec
> (XEN)   c0644e0e c0644edf c064519d c064526c c0645271 c0645282 c064542a
> c064547d
> (XEN)   c0645532 c064594a c0645bac c0645c7f c0645c8e c0645d41 c0645d55
> c0645d75
> (XEN)   c0645d9d c0645da7 c06468a9 c0646987 c06469a5 c06469ac c0646be8
> c010e91e
> (XEN)   c010e959 c010e979 c01104a7 c01114f2 c0111552 c0111be2 c0111c52
> c0111eec
> (XEN)   c0111f17 c0112ae8 c0112b60 c0112c62 c0112c82 c0112ce0 c0112d26
> c0112d9f
> (XEN)   c0112e39 c0113095 c0113175 c01132cc c06486f9 c0648784 c064878f
> c0648797
> (XEN)   c064879c c06487a4 c06487ac c06487bd c06487d0 c0648868 c064887b
> c06488a4
> (XEN)   c06488b2 c0648984 c064898c c0648994 c064899c c0648af8 c0648c2f
> c0648ca4
> 
> Full log here:  http://pastebin.linode.com/20
> 
> Thoughts?
> 
> Thanks,
> -Chris
> 
> 
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