[Xen-users] Bringing up second NIC crashes domU with an Oops

[master@xxxxxxxxxxxxxxx]

Am I doing something wrong? If I remove the second bridge (xenbr1), the
domU boots fine. If in place, it causes the following crash and brings
down another domU with it.

[root@teegeeack xen]# cat theta
kernel ="/boot/vmlinuz-2.6.12-1.1454_FC4xenU"
memory = 128
name = "theta"
nics = 2
vif  = [ 'bridge=xen-br0', 'bridge=xenbr1' ]
disk = ['file:/theta.img,sda1,w']
root = "/dev/sda1 ro"
extra = "selinux=0"


Bringing up loopback interface:  [  OK  ]
Bringing up interface eth0:  [  OK  ]
Bringing up interface eth1:  Unable to handle kernel paging request at
virtual address c777c700
 printing eip:
*pde = ma 16eb8067 pa 0001b067
*pte = ma 00000000 pa 55555000
Oops: 0002 [#1]
SMP
Modules linked in: dm_mod
CPU:    0
EIP:    0061:[<c024ba10>]    Not tainted VLI
EFLAGS: 00010216   (2.6.12-1.1454_FC4xenU)
EIP is at netif_poll+0x190/0x790
eax: 00000020   ebx: c006ce80   ecx: c777c04a   edx: c777c700
esi: c777c000   edi: 00000002   ebp: c0497240   esp: c0395f58
ds: 007b   es: 007b   ss: 0069
Process arping (pid: 393, threadinfo=c0395000 task=c7911a80)
Stack: ffffffff 00000112 00000000 c0395f8c 0111a9c5 c0132fe8 00000005
00000005
       00000001 00000002 00000001 00000040 00000000 c0395f8c c0395f8c
00000000
       00000001 dead4ead 00000001 c0497000 c0497104 c11064a0 c0395000
c0260d3c
Call Trace:
 [<c0132fe8>] rcu_check_quiescent_state+0x78/0x90
 [<c0260d3c>] net_rx_action+0xdc/0x220
 [<c0124bba>] __do_softirq+0x8a/0x120
 [<c010e52b>] do_softirq+0x8b/0xb0
 =======================
 [<c0124ce5>] local_bh_enable+0x95/0xa0
 [<c025ff88>] dev_queue_xmit+0x168/0x390
 [<c02c8995>] packet_sendmsg+0x235/0x2e0
 [<c025435a>] sock_sendmsg+0x12a/0x170
 [<c0109944>] hypervisor_callback+0x2c/0x34
 [<c0136da0>] autoremove_wake_function+0x0/0x60
 [<c015cb33>] do_no_page+0x2e3/0x3e0
 [<c021f7a0>] copy_from_user+0x60/0xf0
 [<c0253ce8>] move_addr_to_kernel+0x48/0x70
 [<c0255d61>] sys_sendto+0x121/0x160
 [<c011510c>] do_page_fault+0x43c/0x705
 [<c015e24f>] vma_link+0x5f/0x100
 [<c0256906>] sys_socketcall+0x1d6/0x2b0
 [<c010975d>] syscall_call+0x7/0xb
Code: 43 04 00 00 00 00 c7 03 00 00 00 00 39 d1 0f 87 b6 03 00 00 8b 83 a4
00 00 00 8b b3 a0 00 00 00 29 f0 83 f8 0f 0f 8e 9f 03 00 00 <c7> 02 01 00
00 00 8b 83 ac 00 00 00 c7 40 04 00 00 00 00 8b 83
 <0>Kernel panic - not syncing: Fatal exception in interrupt
 [<c011eae3>] panic+0x53/0x240
 [<c010a17a>] die+0x17a/0x190
 [<c0114fa2>] do_page_fault+0x2d2/0x705
 [<c0118102>] recalc_task_prio+0xc2/0x170
 [<c0259721>] kfree_skbmem+0x21/0x30
 [<c027dae0>] ip_rcv+0xe0/0x5c0
 [<c0109b22>] page_fault+0x2e/0x34
 [<c024ba10>] netif_poll+0x190/0x790
 [<c0132fe8>] rcu_check_quiescent_state+0x78/0x90
 [<c0260d3c>] net_rx_action+0xdc/0x220
 [<c0124bba>] __do_softirq+0x8a/0x120
 [<c010e52b>] do_softirq+0x8b/0xb0
 =======================
 [<c0124ce5>] local_bh_enable+0x95/0xa0
 [<c025ff88>] dev_queue_xmit+0x168/0x390
 [<c02c8995>] packet_sendmsg+0x235/0x2e0
 [<c025435a>] sock_sendmsg+0x12a/0x170
 [<c0109944>] hypervisor_callback+0x2c/0x34
 [<c0136da0>] autoremove_wake_function+0x0/0x60
 [<c015cb33>] do_no_page+0x2e3/0x3e0
 [<c021f7a0>] copy_from_user+0x60/0xf0
 [<c0253ce8>] move_addr_to_kernel+0x48/0x70
 [<c0255d61>] sys_sendto+0x121/0x160
 [<c011510c>] do_page_fault+0x43c/0x705
 [<c015e24f>] vma_link+0x5f/0x100
 [<c0256906>] sys_socketcall+0x1d6/0x2b0
 [<c010975d>] syscall_call+0x7/0xb

and the other running domU also crashes

[root@teegeeack xen]# xm list
Name              Id  Mem(MB)  CPU VCPU(s)  State  Time(s)
Domain-0           0      128    0      1   r----    229.0
theta             11      127    0      1   ----c     10.7
xenu              10      127    0      1   ----c     22.2

and the second interface (11.1) is attached to the first bridge and not
xenbr1.

[root@teegeeack xen]# brctl show
bridge name     bridge id               STP enabled     interfaces
xen-br0         8000.0040f4ce392f       no              eth1
                                                        vif0.0
                                                        vif10.0
                                                        vif11.0
                                                        vif11.1
xenbr1          8000.000000000000       no               can't get port
info: Function not implemented




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