[Xen-devel] kernel panic with ipv6 in Xen

[Sam Johnston <samjie@xxxxxxxxx>]

Evening all,

We have a kernel panic on boot under xen when loading the ipv6 module
which was resolved by mounting the device under dom0 and moving the
ipv6 module out of the way. Is this a known problem? Is it likely to
be a xen issue? An ipv6 issue? PEBCAK?

It's not an essential service so we can live without it, but I haven't
seen a kernel panic yet this millenium so I considered it
email-worthy.

Sam

Configuring network interfaces: done.

Setting the System Clock using the Hardware Clock as reference...
hwclock is unable to get I/O port access:  the iopl(3) call failed.
System Clock set. Local time: Fri May  6 23:27:36 UTC 2005

Running ntpdate to synchronize clockNET: Registered protocol family 10
IPv6 over IPv4 tunneling driver
skput:under: c02469ec:14 put:14 dev:<NULL>------------[ cut here ]------------
kernel BUG at net/core/skbuff.c:107!
invalid operand: 0000 [#1]
PREEMPT
Modules linked in: ipv6
CPU:    0
EIP:    0061:[<c023485b>]    Not tainted VLI
EFLAGS: 00010296   (2.6.10-xenU)
EIP is at skb_under_panic+0x3b/0x50
eax: 0000002d   ebx: 00000000   ecx: 00000000   edx: fbffc000
esi: c008fdc0   edi: 000086dd   ebp: c10c4000   esp: c0317dd8
ds: 007b   es: 007b   ss: 0069
Process swapper (pid: 0, threadinfo=c0316000 task=c02da600)
Stack: c02c9000 c02469ec 0000000e 0000000e c02c42bc c02469f5 c008fdc0 0000000e
       c02469ec c0317e3c c008fdc0 000005dc c10c4000 c48ad13b c008fdc0 c10c4000
       000086dd c0317e3c 00000000 000005dc c0317e88 c3eeb7c0 c10801b8 0205003a
Call Trace:
 [<c02469ec>] eth_header+0x12c/0x140
 [<c02469f5>] eth_header+0x135/0x140
 [<c02469ec>] eth_header+0x12c/0x140
 [<c48ad13b>] mld_newpack+0xeb/0x240 [ipv6]
 [<c0138934>] mempool_free+0x74/0x100
 [<c48ad5c3>] add_grhead+0xd3/0xf0 [ipv6]
 [<c48ad6b1>] add_grec+0xd1/0x440 [ipv6]
 [<c0122204>] update_process_times+0x44/0x50
 [<c48adcd3>] mld_send_cr+0x143/0x2c0 [ipv6]
 [<c48aed70>] mld_ifc_timer_expire+0x0/0x50 [ipv6]
 [<c48aed83>] mld_ifc_timer_expire+0x13/0x50 [ipv6]
 [<c0122318>] run_timer_softirq+0xe8/0x200
 [<c011de75>] __do_softirq+0x95/0xb0
 [<c011dedd>] do_softirq+0x4d/0x50
 [<c0133765>] irq_exit+0x35/0x40
 [<c010dace>] do_IRQ+0x1e/0x30
 [<c0105ee1>] evtchn_do_upcall+0x81/0xa0
 [<c0109807>] hypervisor_callback+0x37/0x40
 [<c01072fe>] xen_idle+0x8e/0x150
 [<c02a3c59>] preempt_schedule+0x29/0x50
 [<c01073e9>] cpu_idle+0x29/0x50
 [<c03187c8>] start_kernel+0x178/0x1c0
 [<c0318350>] unknown_bootoption+0x0/0x1e0
Code: c0 0f 44 c2 89 44 24 10 8b 44 24 1c 89 44 24 0c 8b 41 60 c7 04
24 00 90 2c c0 89 44 24 08 8b 44 24 20 89 44 24 04 e8 d5 4c ee ff <0f>
0b 6b 00 be 68 2c c0 83 c4 14 c3 89 f6 8d bc 27 00 00 00 00
 <0>Kernel panic - not syncing: Fatal exception in interrupt
 <0>Rebooting in 1 seconds..

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