Re: [Xen-devel] Creating a domU on x86 crashes dom0

[Bill Burns <billburnseh@xxxxxxxxx>]

I am seeing a very similar symptom with restoring a domU
that has networking enabled. The kernel BUG netback.c line 349.

If I create a domU with no networking I can create/save/restore fine.

Here is my stack trace for the restore of the domU with networking:

 Bill

kernel BUG at drivers/xen/netback/netback.c:349 (net_rx_action)!
 [<c02bd43c>] net_rx_action+0x46c/0x500
 [<c0381aff>] br_pass_frame_up_finish+0xf/0x20
 [<c0381b8c>] br_pass_frame_up+0x7c/0x80
 [<c0381af0>] br_pass_frame_up_finish+0x0/0x20
 [<c0381c77>] br_handle_frame_finish+0xe7/0x160
 [<c0385e48>] br_nf_pre_routing_finish+0x178/0x420
 [<e0e432d4>] veth_recv_interrupt+0x1a4/0x610 [egenera_veth]
 [<c033dc4d>] nf_iterate+0x5d/0x90
 [<c0385cd0>] br_nf_pre_routing_finish+0x0/0x420
 [<c0385cd0>] br_nf_pre_routing_finish+0x0/0x420
 [<c033e0ae>] nf_hook_slow+0x7e/0x140
 [<c034336a>] rt_intern_hash+0x2aa/0x3e0
 [<c014d598>] kmem_cache_alloc+0x98/0xb0
 [<c0344891>] ip_route_input_mc+0x231/0x2e0
  [<c033dc4d>] nf_iterate+0x5d/0x90
 [<c033dc4d>] nf_iterate+0x5d/0x90
 [<c032b981>] kfree_skbmem+0x21/0x30
 [<c03471a0>] ip_local_deliver+0x110/0x250
 [<c0347793>] ip_rcv+0x323/0x4f0
 [<c0347960>] ip_rcv_finish+0x0/0x280
 [<c033280d>] netif_receive_skb+0x20d/0x260
 [<c033291b>] process_backlog+0xbb/0x190
 [<c0125cb2>] tasklet_action+0x72/0x120
 [<c01257f9>] __do_softirq+0x69/0x100
 [<c0125915>] do_softirq+0x85/0xa0
 [<c01259f5>] irq_exit+0x35/0x40
 [<c010e7c2>] do_IRQ+0x22/0x30
 [<c01055c6>] evtchn_do_upcall+0x66/0xa0
 [<c010e7c2>] do_IRQ+0x22/0x30
 [<c0109df8>] hypervisor_callback+0x2c/0x34
 [<c01077b8>] xen_idle+0x38/0x90
 [<c0107845>] cpu_idle+0x35/0x50
 [<c0104023>] rest_init+0x23/0x40
 [<c0104080>] init+0x0/0x120
 [<c044e8da>] start_kernel+0x1ba/0x210
 [<c044e390>] unknown_bootoption+0x0/0x240
Kernel panic - not syncing: BUG!
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