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Re: [Xen-devel] Hard lock of server - saved history from serial consolew

To: Ian Pratt <m+Ian.Pratt@xxxxxxxxxxxx>
Subject: Re: [Xen-devel] Hard lock of server - saved history from serial consolewithin
From: Matt Ayres <matta@xxxxxxxxxxxx>
Date: Wed, 19 Apr 2006 18:35:03 -0400
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Ian Pratt wrote:
Routed / Proxy ARP.

vif-route assigns an IP to the appropriate vif interface. The IP's of the VM are routed through the vif interface.

Have you iptables rules thrown in their too?

Yes, an iptable rule for each IP for bandwidth accounting. Also 4 rules in the raw table and 4 rules in the nat table for port redirection. I don't see how the actual iptables rules could effect the kernel though.

It's really nothing special... routing is actually less complex than bridging IMHO.

Is this perhaps a 2.6.16 kernel bug? Are there any dis-advantages to upgrading to 2.6.16.9 or .10-rc?

Please try .9 or .10-rc and let us know how you get on.


Easier said than done. I have 31 nodes and 2 have rebooted with this error so far. It's especially hurtful as I just upgraded all nodes to the changeset listed in the original message yesterday. I'll give it a shot, but I have absolutely no idea which node will reboot next.

Ian

Thanks,
Matt

Ian Pratt wrote:
Please can you describe your networking setup. Judging by the stack trace its non standard.

Ian

-----Original Message-----
From: xen-devel-bounces@xxxxxxxxxxxxxxxxxxx
[mailto:xen-devel-bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of Matt Ayres
Sent: 19 April 2006 23:07
To: xen-devel@xxxxxxxxxxxxxxxxxxx
Subject: [Xen-devel] Hard lock of server - saved history
from serial
consolewithin

This was a hard lock...

xen_changeset : Sun Apr 16 15:45:57 2006 +0100 9629:07408313ce33 --- TOP OF BUFFER ---

Unable to handle kernel paging request at virtual address d144a053

printing eip:
c03e5b55

09baa000 -> *pde = 00000000:ec867001

0e467000 -> *pme = 00000000:eb346067

0fb46000 -> *pte = 00000000:00000000

Oops: 0000 [#1]

SMP

Modules linked in: CPU: 0 EIP: 0061:[<c03e5b55>] Not tainted VLI EFLAGS: 00010282 (2.6.16-xen #4)
EIP is at ipt_do_table+0xad/0x2d0

eax: 00000002 ebx: c804ca1e ecx: c804ca1e edx: 00000000 esi: d144a000 edi: 00004000 ebp: d144d9d0 esp: c0567dd0 ds: 007b es: 007b ss: 0069
Process swapper (pid: 0, threadinfo=c0566000 task=c04e5c80)

Stack: <0>c051956c 00000000 c804ca1e 00000000 ce2f1800 cfdcb000 d144a000 0000000 0

00000001 00000000 c0567e70 80000000 c03aeb78 cfdcb000 c03e6bd0
c0567eb4
00000002 ce2f1800 cfdcb000 c0519540 00000000 c03a42f8 00000002
c0567eb4
Call Trace:
PORT HISTORY> NEXT

  [<c03aeb78>] ip_forward_finish+0x0/0x36

  [<c03e6bd0>] ipt_hook+0x1c/0x20

  [<c03a42f8>] nf_iterate+0x2c/0x5e

  [<c03aeb78>] ip_forward_finish+0x0/0x36

  [<c03aeb78>] ip_forward_finish+0x0/0x36

  [<c03a43f3>] nf_hook_slow+0x3c/0xc3

  [<c03aeb78>] ip_forward_finish+0x0/0x36

  [<c03aed4c>] ip_forward+0x19e/0x22e

  [<c03aeb78>] ip_forward_finish+0x0/0x36




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