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Re: [Xen-devel] xen.git branch reorg / crash with 2.6.30-rc3 pv_ops dom0

To: Pasi Kärkkäinen <pasik@xxxxxx>
Subject: Re: [Xen-devel] xen.git branch reorg / crash with 2.6.30-rc3 pv_ops dom0
From: Jeremy Fitzhardinge <jeremy@xxxxxxxx>
Date: Mon, 27 Apr 2009 12:33:01 -0700
Cc: Xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxx>, Ian Campbell <Ian.Campbell@xxxxxxxxxx>
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Pasi Kärkkäinen wrote:
On Thu, Apr 23, 2009 at 11:32:14AM -0700, Jeremy Fitzhardinge wrote:
Pasi Kärkkäinen wrote:
I'll try upgrading from dom0/hackery to xen-tip/next and see how it works
for me.
Thanks.


It seems latest tree crashes for me (happened yesterday, and also today, just 
rebuilt the latest commits):
http://pasik.reaktio.net/xen/pv_ops-dom0-debug/pv_ops-dom0-bootlog-26-xen331-linux-2.6.30-rc3-crash-no-highpte.txt

Zone PFN ranges:
  DMA      0x00000010 -> 0x00001000
  Normal   0x00001000 -> 0x000229fe
  HighMem  0x000229fe -> 0x00040000
Movable zone start PFN for each node
early_node_map[3] active PFN ranges
    0: 0x00000010 -> 0x0000009f
    0: 0x00000100 -> 0x00001167
    0: 0x00001268 -> 0x00040000
(XEN) d0:v0: unhandled page fault (ec=0003)
(XEN) Pagetable walk from c1268000:
(XEN)  L3[0x003] = 000000003c8f0001 000008f0
(XEN) L2[0x009] = 000000003d276067 00001276 (XEN) L1[0x068] = 000000003d268061 00001268
(XEN) domain_crash_sync called from entry.S (ff19f70e)
(XEN) Domain 0 (vcpu#0) crashed on cpu#0:
(XEN) ----[ Xen-3.3.1-11.fc11  x86_32p  debug=n  Not tainted ]----
(XEN) CPU:    0
(XEN) EIP:    e019:[<c088adae>]
(XEN) EFLAGS: 00000206   EM: 1   CONTEXT: pv guest
(XEN) eax: 00000000   ebx: 00800000   ecx: 00200000   edx: c1268000
(XEN) esi: 01268000   edi: c1268000   ebp: c086de5c   esp: c086de1c
(XEN) cr0: 8005003b   cr4: 000006f0   cr3: 3c85c000   cr2: c1268000
(XEN) ds: e021   es: e021   fs: e021   gs: e021   ss: e021   cs: e019
(XEN) Guest stack trace from esp=c086de1c:

[root@dom0test linux-2.6-xen]# gdb ./vmlinux
(gdb) x/i 0xc086de1c
0xc086de1c <init_thread_union+3612>:    add    %al,(%eax)

32b PAE dom0, 32b PAE hypervisor.
"x/i 0xc088adae" would be more useful, as that will show the faulting instruction.

I just booted a current xen-tip/next kernel as dom0 on my 32-bit machine with no problems, so I'm not sure what's going wrong on your machine.

Ian, have you tried 32-bit boots lately?

   J

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