[Xen-users] Linux DomU network crash on NetBSD Dom0

[Martin Emrich <emme@xxxxxxxxxxxxxx>]

Hi!

I have installed NetBSD as a Dom0 on a Box (NetBSD 4.0 i386 with Xen
3.1.3 Non-PAE), and try to run a Debian DomU with the current
linux-2.6.18.8 Xen kernel built with the Xen 3.2.0 sources (also Non-PAE).

The DomU boots fine, but as soon as I try to use the network interface
(network-bridged on Dom0), I get this:

====================
root@hackbox:~# dhclient eth1
Internet Systems Consortium DHCP Client V3.0.4
Copyright 2004-2006 Internet Systems Consortium.
All rights reserved.
For info, please visit http://www.isc.org/sw/dhcp/

------------[ cut here ]------------
kernel BUG at
/root/xen-hg/linux-2.6.18-xen.hg/drivers/xen/netfront/netfront.c:785!
invalid opcode: 0000 [#1]
SMP
Modules linked in: loop
CPU:    0
EIP:    0061:[<c0260434>]    Not tainted VLI
EFLAGS: 00010286   (2.6.18.8-xenU #1)
EIP is at network_alloc_rx_buffers+0x534/0x570
eax: 00000000   ebx: dfbcd240   ecx: c1530000   edx: c15302c0
esi: c1560bc0   edi: c1530368   ebp: de827e38   esp: de827dd4
ds: 007b   es: 007b   ss: 0069
Process ifconfig (pid: 2008, ti=de826000 task=df9f6a70 task.ti=de826000)
Stack: 00000240 00000000 0001ebf6 debf4500 c1530f9c c1530000 00000081
00000000
       00000000 c15302c0 00000000 00000240 debf6000 00000001 df91a838
00000001
       ffffffff de827e34 c0127bec c14ff0c0 000000d0 df9840e4 c15302c0
c1530000
Call Trace:
 [<c0105ce9>] show_stack_log_lvl+0xa9/0xd0
 [<c0105f4d>] show_registers+0x1bd/0x240
 [<c0106107>] die+0x137/0x300
 [<c0106368>] do_trap+0x98/0xe0
 [<c0106bf1>] do_invalid_op+0xa1/0xb0
 [<c010580b>] error_code+0x2b/0x30
 [<c0263377>] network_open+0x67/0x100
 [<c027762d>] dev_open+0x3d/0x90
 [<c0275bf5>] dev_change_flags+0x55/0x130
 [<c02b2a8c>] devinet_ioctl+0x4ac/0x6a0
 [<c02b2fce>] inet_ioctl+0x8e/0xb0
 [<c026b0e6>] sock_ioctl+0x126/0x230
 [<c017a1c5>] do_ioctl+0x35/0x90
 [<c017a277>] vfs_ioctl+0x57/0x2b0
 [<c017a511>] sys_ioctl+0x41/0x70
 [<c010565f>] syscall_call+0x7/0xb
Code: 8b bc 10 f8 14 00 00 85 ff 75 3a ff 4d d8 83 7d d8 ff 75 e3 ba ff
ff ff ff e9 d0 fd ff ff 0f 0b 15 03 74 41 30 c0 e9 a6 fc ff ff <0f> 0b
11 03 74 41 30 c0 e9 75 fc ff ff 0f 0b 22 00 88 b2 2e c0
EIP: [<c0260434>] network_alloc_rx_buffers+0x534/0x570 SS:ESP 0069:de827dd4
 <0>Kernel panic - not syncing: Fatal exception in interrupt
===========================

Then the DomU restarts.

Is this a bug or an incompatibility between the Xen 3.1.3 hypervisor and
the kernel built for 3.2.0?

Thanks,

Martin

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