Re: [Xen-devel] 2.6.28 64-bit domU not booting

[Valtteri Kiviniemi <valtteri.kiviniemi@xxxxxxxxxxxx>]

Hi,

Yeah I'll upgrade to the newest Xen with debug enabled later, so I'll 
will post the results then.

- Valtteri Kiviniemi

Ian Campbell kirjoitti:
> On Tue, 2009-01-06 at 16:37 +0200, Valtteri Kiviniemi wrote:
> > Hi,
> >
> > No it does not print anything, just disappears immediately.
> >
> > This is what I get in xm dmesg after trying to launch the domU with 2.6.28
> >
> > http://pastebin.com/m6ab14265
> Since they aren't huge please just paste the messages inline or attach
> them rather than sending me off to some website.
>
> Looks like a hypercall has failed and the kernel has done a BUG():
>
> (XEN) mm.c:1482:d71 Bad L1 flags 800000
> (XEN) traps.c:437:d71 Unhandled invalid opcode fault/trap [#6] on VCPU 0 
> [ec=0000]
> (XEN) domain_crash_sync called from entry.S
> (XEN) Domain 71 (vcpu#0) crashed on cpu#0:
> (XEN) ----[ Xen-3.3.1-rc1-pre  x86_64  debug=n  Not tainted ]----
> (XEN) CPU:    0
> (XEN) RIP:    e033:[<ffffffff8020a7aa>]
> (XEN) RFLAGS: 0000000000000282   EM: 1   CONTEXT: pv guest
> (XEN) rax: 00000000ffffffea   rbx: 8000000000000161   rcx: 0000000000000008
> (XEN) rdx: 0000000000000000   rsi: 80000001d9ddd061   rdi: ffffffff80622000
> (XEN) rbp: 0000000001000000   rsp: ffffffff80599f58   r8:  0000000000000000
> (XEN) r9:  0000000000000000   r10: 0000000000000000   r11: 0000000000000000
> (XEN) r12: ffffffff80622000   r13: 0000000000000200   r14: 0000000000001000
> (XEN) r15: 0000000000000800   cr0: 000000008005003b   cr4: 00000000000026b0
> (XEN) cr3: 00000001d9cef000   cr2: 0000000000000000
> (XEN) ds: 0000   es: 0000   fs: 0000   gs: 0000   ss: e02b   cs: e033
> (XEN) Guest stack trace from rsp=ffffffff80599f58:
> (XEN)    0000000000000008 0000000000000000 ffffffff8020a7aa 000000010000e030
> (XEN)    0000000000010082 ffffffff80599f98 000000000000e02b ffffffff8020a7a6
> (XEN)    ffffffff8020c18c 0000000000000200 0000000000000008 ffffffff805c4d3f
> (XEN)    ffffffff80710000 0000000000010000 0000000000000008 0000000000000000
> (XEN)    0000000000000000 0000000000000000 0000000000000000 0000000000000000
> (XEN)    0000000000000000 ffffffff8068d000 ffffffff8068e000 ffffffff8068f000
> (XEN)    ffffffff80690000 ffffffff80691000 ffffffff80692000 ffffffff80693000
> (XEN)    ffffffff80694000 ffffffff80695000 ffffffff80696000 ffffffff80697000
> (XEN)    ffffffff80698000 ffffffff80699000 ffffffff8069a000 ffffffff8069b000
> (XEN)    ffffffff8069c000 ffffffff8069d000 ffffffff8069e000 ffffffff8069f000
> (XEN)    ffffffff806a0000 ffffffff806a1000 ffffffff806a2000 ffffffff806a3000
> (XEN)    ffffffff806a4000 ffffffff806a5000 ffffffff806a6000 ffffffff806a7000
> (XEN)    ffffffff806a8000 ffffffff806a9000 ffffffff806aa000 ffffffff806ab000
> (XEN)    ffffffff806ac000 ffffffff806ad000 ffffffff806ae000 ffffffff806af000
> (XEN)    ffffffff806b0000 ffffffff806b1000 ffffffff806b2000 ffffffff806b3000
> (XEN)    ffffffff806b4000 ffffffff806b5000 ffffffff806b6000 ffffffff806b7000
> (XEN)    ffffffff806b8000 ffffffff806b9000 ffffffff806ba000 ffffffff806bb000
> (XEN)    ffffffff806bc000 ffffffff806bd000 ffffffff806be000 ffffffff806bf000
> (XEN)    ffffffff806c0000 ffffffff806c1000 ffffffff806c2000 ffffffff806c3000
> (XEN)    ffffffff806c4000 ffffffff806c5000 ffffffff806c6000 ffffffff806c7000
>
> What does ffffffff8020a7aa correspond to in your kernel? Do any of the
> other values on the stack correspond to interesting functions? I usually
> pipe such stack traces into "| gdb-disas vmlinux" (attached, needs
> kernel with debug info), of course it would be better to update to 3.3.1
> final and build with debugging enabled to see the actual stack trace
> from the domU kernel.
>
>
> > - Valtteri Kiviniemi
> >
> > Ian Campbell kirjoitti:
> > > On Mon, 2009-01-05 at 20:11 +0200, Valtteri Kiviniemi wrote:
> > > > Hi,
> > > >
> > > > I don't have the opportunity of rebuilding my hypervisor right now, but
> > > > here is the .config:
> > > >
> > > > http://pastebin.com/m181cf183
> > > >
> > > > Is there something wrong with the config or am I missing something there?
> > > No I think your config is ok, I successfully built and booted 2.6.28 as
> > > a 64 bit domU on my test system using it. My command line was
> > > "root=/dev/xvda1 ro 4 console=hvc0 earlyprintk=xen"
> > >
> > > Do you get anything on the Xen console (xm dmesg) when you try to start
> > > the guest?
> > >
> > >
> > > > - Valtteri Kiviniemi
> > > >
> > > > Ian Campbell kirjoitti:
> > > > > On Mon, 2009-01-05 at 14:19 +0200, Valtteri Kiviniemi wrote:
> > > > > > Hi,
> > > > > >
> > > > > > Im using vanilla 2.6.28 kernel from kernel.org and when I try to boot my 
> > > > > >   domU with it, it just disappears without any error or warning.
> > > > > Can you build a debug=y hypervisor and add earlyprintk=xen to the domU
> > > > > command line?
> > > > >
> > > > > > I have double checked that I have all the necessary options enabled on 
> > > > > > my kernel config.
> > > > > Can you supply the config pls.
> > > > >
> > > > > Ian.
> > > > >
> > > > >
> > > > >
> > > > > _______________________________________________
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