Re: [Xen-devel] Re: [Xen-users] 2.6.23 oops

Mark Williamson
Thu, 11 Oct 2007 16:27:58 -0000

> >   I''ve tried to run 2.6.23 on xen 3.1.0, my hardware is a
Dual Athlon MP.
> > my DomU is running 2.6.23 SMP (vcpus = 1), without SMP it hang during
> > boot, with it panics. I''ve attached my config, if somebody
thinks I''ve
> > left something out
>
> Do you mean that it hangs during boot if SMP is not compiled into the guest
> kernel?  That seems strange, I''ll try that out myself and see what
happens.

Where does it hang for you?

I disabled SMP in my kernel config and found that the guest hung during the
kernel messages, just after:

	installing Xen timer for CPU 0

Is this similar to what you observed?

Cheers,
Mark

> How far into the boot does it manage to get?  Has it started running
> userspace apps (the normal startup messages starting essential services),
> or is it still during the kernel initialisation?
>
> > Does anybody else see this:
>
> I''ve booted a kernel successfully on a UP AMD64 box with an SMP
2.6.23
> kernel, vcpus = 1 but I didn''t bother giving it a virtual disk, so
I don''t
> know if userspace worked.  I''ll give it a try shortly...
>
> Cheers,
> Mark
>
> > ------------[ cut here ]------------
> > kernel BUG at arch/i386/xen/multicalls.c:68!
> > invalid opcode: 0000 [#1]
> > SMP
> > CPU:    0
> > EIP:    0061:[<c01019a6>]    Not tainted VLI
> > EFLAGS: 00010002   (2.6.23 #26)
> > EIP is at xen_mc_flush+0xa6/0xb0
> > eax: 00000001   ebx: 00000003   ecx: 00000001   edx: c10c1060
> > esi: 00000000   edi: 00000001   ebp: c5c8d000   esp: c1101d28
> > ds: 007b   es: 007b   fs: 00d8  gs: 0000  ss: e021
> > Process swapper (pid: 1, ti=c1100000 task=c10eda90 task.ti=c1100000)
> > Stack: 000218ee c10c10a0 c10c1460 c0101ede c5c8ce40 c02b90e0 c10eda90
> > 00000000 c0101ff3 c5c8ce40 c015caca c5d3b49c 00000080 c5eadaa0
00000000
> > c10eed80 c01584d0 c02b9a80 c5cfd560 c02a53d2 c1142440 c015c077
c1101d84
> > c5eadaa0 Call Trace:
> >   [<c0101ede>] xen_pgd_pin+0x9e/0x100
> >   [<c0101ff3>] xen_activate_mm+0x13/0x20
> >   [<c015caca>] flush_old_exec+0x3ca/0x7f0
> >   [<c01584d0>] do_sync_read+0x0/0x120
> >   [<c015c077>] kernel_read+0x37/0x50
> >   [<c018308e>] load_elf_binary+0x2fe/0x1af0
> >   [<c013ec27>] __alloc_pages+0x57/0x310
> >   [<c0155387>] kmem_cache_alloc+0x47/0x90
> >   [<c0147610>] handle_mm_fault+0x540/0x710
> >   [<c01585a5>] do_sync_read+0xd5/0x120
> >   [<c0145e10>] vm_normal_page+0x10/0x70
> >   [<c0145e10>] vm_normal_page+0x10/0x70
> >   [<c0146471>] follow_page+0xf1/0x170
> >   [<c01478ca>] get_user_pages+0xea/0x2e0
> >   [<c015bbe2>] get_arg_page+0x42/0xa0
> >   [<c015bdc6>] copy_strings+0x186/0x1a0
> >   [<c015be64>] search_binary_handler+0x54/0x110
> >   [<c015d83b>] do_execve+0x14b/0x170
> >   [<c010425f>] sys_execve+0x2f/0x90
> >   [<c0105c72>] syscall_call+0x7/0xb
> >   [<c010a364>] kernel_execve+0x14/0x20
> >   [<c0100173>] init_post+0xa3/0xf0
> >   [<c02d594f>] kernel_init+0x20f/0x310
> >   [<c0118464>] schedule_tail+0x34/0x90
> >   [<c0105b16>] ret_from_fork+0x6/0x20
> >   [<c0105c7b>] syscall_exit+0x5/0x1b
> >   [<c02d5740>] kernel_init+0x0/0x310
> >   [<c02d5740>] kernel_init+0x0/0x310
> >   [<c0106e77>] kernel_thread_helper+0x7/0x10
> >   ======================


--
Dave: Just a question. What use is a unicyle with no seat?  And no pedals!
Mark: To answer a question with a question: What use is a skateboard?
Dave: Skateboards have wheels.
Mark: My wheel has a wheel!