Re: [Xen-devel] [bug]xen 4.10 + dom0 4.15 couldn't boot up

[Juergen Gross <jgross@xxxxxxxx>]

On 30/01/18 01:33, Zhang, Xiong Y wrote:
> The message is really short. Dom0 error happens before the first kernel 
> message:
> 
> ▒ Xen 4.11-unstable
> (XEN) Xen version 4.11-unstable (test@) (gcc (Ubuntu 5.4.0-6ubuntu1~16.04.4) 
> 5.4.0 20160609) debug=n  Tue Jan 30 02:38:14 CST 2018

Aah, just saw that now: can you please use a hypervisor with debug=y?
This should add some more messages to the log which might give some more
insight.

...

> (XEN) d0v0 Unhandled page fault fault/trap [#14, ec=0000]
> (XEN) Pagetable walk from 0000000000000028:
> (XEN)  L4[0x000] = 0000000000000000 ffffffffffffffff
> (XEN) domain_crash_sync called from entry.S: fault at ffff82d0803530e4 
> x86_64/entry.S#create_bounce_frame+0x135/0x151
> (XEN) Domain 0 (vcpu#0) crashed on cpu#0:
> (XEN) ----[ Xen-4.11-unstable  x86_64  debug=n   Not tainted ]----
> (XEN) CPU:    0
> (XEN) RIP:    e033:[<ffffffff8103f78b>]
> (XEN) RFLAGS: 0000000000000292   EM: 1   CONTEXT: pv guest (d0v0)
> (XEN) rax: 0000000000000000   rbx: ffffffff81e06020   rcx: 0000000000000000
> (XEN) rdx: 0000000000000000   rsi: ffffffff82403e90   rdi: ffffffff82403e8c
> (XEN) rbp: ffffffff82403ec8   rsp: ffffffff82403e10   r8:  ffffffff82403f00
> (XEN) r9:  00000000ffffffff   r10: ffffffff82403f04   r11: 0000000000000000
> (XEN) r12: ffffffff82403e88   r13: ffffffff82403e78   r14: ffffffff82403e80
> (XEN) r15: ffffffff82403e84   cr0: 000000008005003b   cr4: 00000000003526e0
> (XEN) cr3: 000000040eb66000   cr2: 0000000000000028
> (XEN) fsb: 0000000000000000   gsb: 0000000000000000   gss: 0000000000000000
> (XEN) ds: 0000   es: 0000   fs: 0000   gs: 0000   ss: e02b   cs: e033
> (XEN) Guest stack trace from rsp=ffffffff82403e10:
> (XEN)    0000000000000000 0000000000000000 0000000000000000 ffffffff8103f78b
> (XEN)    000000010000e030 0000000000010092 ffffffff82403e58 000000000000e02b
> (XEN)    0000000000000000 ffffffff826591e0 0000000000000000 0000000000000000
> (XEN)    0000000000000000 0000000000000000 0000000000000000 0000000000000000
> (XEN)    0000000000000000 0000000000000000 ffffffff826591e0 ffffffff82403f04
> (XEN)    ffffffff82403f00 ffffffff82403efc ffffffff82403ef8 ffffffff82403f40
> (XEN)    ffffffff81040343 ffffffff82403f14 ffffffff82403f10 ffffffff82403f0c
> (XEN)    ffffffff82403f08 0000000000003027 0000000000000000 0000000080000008
> (XEN)    0000000000000000 ffffffff81032100 0000000000000000 0000000000000000
> (XEN)    0000000000000000 0000000000000000 ffffffff82403ff8 ffffffff826ac35d

Can you please translate the kernel addresses in this stack dump to
symbol+offset (via disassembly of the kernel) or file+line (via
addr2line utility)?

Juergen

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