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[Xen-devel] Re: Bootup fix for _brk_end being != _end



On Thu, Mar 17, 2011 at 03:07:05PM +0000, Stefano Stabellini wrote:
> On Thu, 17 Mar 2011, Daniel Kiper wrote:
> > > > > > Details? Can you provide the 'xenctx' output of where it crashed?
> > > > >
> > > > > As I wrote above domain is dying and I am not able to connect to it 
> > > > > using
> > > > > xenctx after crash :-(((. I do not know how to do that in another way.
> > > >
> > > > try adding:
> > > >
> > > > extra = "loglevel=9 debug earlyprintk=xenboot"
> > >
> > > (XEN) d55:v0: unhandled page fault (ec=0002)
> > > (XEN) Pagetable walk from 000000000000000c:
> > > (XEN)  L4[0x000] = 000000010bebc027 0000000000024d28
> > > (XEN)  L3[0x000] = 0000000000000000 ffffffffffffffff
> > > (XEN) domain_crash_sync called from entry.S
> > > (XEN) Domain 55 (vcpu#0) crashed on cpu#3:
> > > (XEN) ----[ Xen-4.1.0-rc2-pre  x86_64  debug=y  Not tainted ]----
> > > (XEN) CPU:    3
> > > (XEN) RIP:    e019:[<00000000c1001180>]
> > > (XEN) RFLAGS: 0000000000000282   EM: 1   CONTEXT: pv guest
> > > (XEN) rax: 000000000000000c   rbx: 000000000000000c   rcx: 
> > > 00000000c1371fd0
> > > (XEN) rdx: 00000000c1371fd0   rsi: 00000000c1742000   rdi: 
> > > 00000000a5c03d70
> > > (XEN) rbp: 00000000c1371fc8   rsp: 00000000c1371fa8   r8: 0000000000000000
> > > (XEN) r9:  0000000000000000   r10: 0000000000000000   r11: 
> > > 0000000000000000
> > > (XEN) r12: 0000000000000000   r13: 0000000000000000   r14: 
> > > 0000000000000000
> > > (XEN) r15: 0000000000000000   cr0: 000000008005003b   cr4: 
> > > 00000000000026f4
> > > (XEN) cr3: 0000000129b6e000   cr2: 000000000000000c
> > > (XEN) ds: e021   es: e021   fs: e021   gs: e021   ss: e021   cs: e019
> > > (XEN) Guest stack trace from esp=c1371fa8:
> > > (XEN)   00000002 c1001180 0001e019 00010082 c10037af deadbeef c1742000 
> > > a5c03d70
> > > (XEN)   c1371fdc c13a4aa8 00000000 00000000 00000000 c1371ffc c13a3ff2 
> > > 00000000
> > > (XEN)   00000000 00000000 00000000 00000000 deadbeef c1753000 013fe001 
> > > 00000000
> > > (XEN)   00000000 00000000 00000000 00000000 013fe001 00000000 00000000 
> > > 00000000
> > > (XEN)   00000000 00000000 00000000 00000000 00000000 00000000 00000000 
> > > 00000000
> > > (XEN)   00000000 00000000 00000000 00000000 00000000 00000000 00000000 
> > > 00000000
> > > (XEN)   00000000 00000000 00000000 00000000 00000000 00000000 00000000 
> > > 00000000
> > > (XEN)   00000000 00000000 00000000 00000000 00000000 00000000 00000000 
> > > 00000000
> > > (XEN)   00000000 00000000 00000000 00000000 00000000 00000000 00000000 
> > > 00000000
> > > (XEN)   00000000 00000000 00000000 00000000 00000000 00000000 00000000 
> > > 00000000
> > > (XEN)   00000000 00000000 00000000 00000000 00000000 00000000 00000000 
> > > 00000000
> > > (XEN)   00000000 00000000 00000000 00000000 00000000 00000000 00000000 
> > > 00000000
> > > (XEN)   00000000 00000000 00000000 00000000 00000000 00000000 00000000 
> > > 00000000
> > > (XEN)   00000000 00000000 00000000 00000000 00000000 00000000 00000000 
> > > 00000000
> > > (XEN)   00000000 00000000 00000000 00000000 00000000 00000000 00000000 
> > > 00000000
> > > (XEN)   00000000 00000000 00000000 00000000 00000000 00000000 00000000 
> > > 00000000
> > > (XEN)   00000000 00000000 00000000 00000000 00000000 00000000 00000000 
> > > 00000000
> > > (XEN)   00000000 00000000 00000000 00000000 00000000 00000000 00000000 
> > > 00000000
> > > (XEN)   00000000 00000000 00000000 00000000 00000000 00000000 00000000 
> > > 00000000
> > > (XEN)   00000000 00000000 00000000 00000000 00000000 00000000 00000000 
> > > 00000000
> > 
> > Any progress ??? Can I help you in something ???
> > 
>  
> Unfortunately unless you are able to resolve the IP of the crash these
> logs don't tell me much.
> Alternatively you can try to get more infos using /usr/lib/xen/bin/xenctx
> like Konrad suggested.
>

More info/help about xenctx usage available here:
http://wiki.xen.org/xenwiki/XenCommonProblems#head-61843b32f0243b5ad0e17850f9493bffd80f8c17

-- Pasi


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