Maybe it is a bug of L4/Fiasco or L4Linux

[chenggh]

Hi, everyone:
	When I use netpipe to test the performance of L4Linux based on top of 
L4/Fiasco there is something as following:

kernel BUG at include/linux/netdevice.h:886!
Trap: 6: 0000 [#1]
Modules linked in:
CPU:    0
EIP:    f032:[<0056f317>]    Not tainted VLI
EFLAGS: 00013246   (2.6.17-l4 #1)
EIP is at rtl8139_poll+0xd7/0xf0
eax: 00000006   ebx: 0001d43c   ecx: 0000c07f   edx: 0000d43c
esi: 01331400   edi: b09fff10   ebp: b09fff00   esp: b09ffedc
ds: 4000   es: ea0c   ss: 0000
Process swapper (pid: 0, threadinfo=b09fe000 task=0066b940)
Stack: 01331400 01331660 00000040 00000001 0001d400 01331660 013314c0 01331400
       00003e13 b09fff20 005a8262 01331400 b09fff10 0000012c 00000001 007207d8
       0000000a b09fff38 0041a7a9 007207d8 00000000 0000000c 00000000 b09fff48
Call Trace:
 <0040bec0> show_stack_log_lvl+0x90/0xc0  <0040c08b> 
show_registers+0x14b/0x1c0
 <0040c2bd> die+0xfd/0x200  <00000000> _start+0xffc00000/0x50
 <005a8262> net_rx_action+0x72/0x110  <0041a7a9> __do_softirq+0x49/0xb0
 <00407bc8> do_softirq+0x48/0x50  <0041a8c5> irq_exit+0x35/0x40
 <00407993> do_IRQ+0x23/0x30  <0050b052> irq_thread_hw+0x1f2/0x330
 <a00a8a4c> 0xa00a8a4c  <a00abc76> 0xa00abc76
Code: 41 04 00 02 20 00 c7 86 c0 00 00 00 00 01 10 00 0f ba 76 2c 05 e8 4a 4a 
e9 ff 31 c0 83 7d e8 00 0f 94 c0 83 c4 18 5b 5e 5f c9 c3 <0f> 0
b 76 03 e0 03 64 00 eb b6 eb 0d 90 90 90 90 90 90 90 90 90
EIP: [<0056f317>] rtl8139_poll+0xd7/0xf0 SS:ESP 0023:b09ffed4
 <0>Kernel panic - not syncing: Fatal exception in interrupt
 panic: going to sleep forever, bye
NETDEV WATCHDOG: eth1: transmit timed out
eth1: Transmit timeout, status 0c 0005 c07f media 10.
eth1: Tx queue start entry 107084  dirty entry 107080.
eth1:  Tx descriptor 0 is 0008a042. (queue head)
eth1:  Tx descriptor 1 is 0008a042.
eth1:  Tx descriptor 2 is 0008a5ea.
eth1:  Tx descriptor 3 is 0008a5ea.
eth1: link up, 100Mbps, full-duplex, lpa 0x41E1
NETDEV WATCHDOG: eth1: transmit timed out
eth1: Transmit timeout, status 0c 0005 c07f media 10.
eth1: Tx queue start entry 4  dirty entry 0.
eth1:  Tx descriptor 0 is 0008a4ef. (queue head)
eth1:  Tx descriptor 1 is 0008a5ea.
eth1:  Tx descriptor 2 is 0008a5ea.
eth1:  Tx descriptor 3 is 0008a5ea.
eth1: link up, 100Mbps, full-duplex, lpa 0x41E1
NETDEV WATCHDOG: eth1: transmit timed out
eth1: Transmit timeout, status 0c 0005 c07f media 10.
eth1: Tx queue start entry 4  dirty entry 0.
eth1:  Tx descriptor 0 is 0008a5ea. (queue head)
eth1:  Tx descriptor 1 is 0008a5ea.
eth1:  Tx descriptor 2 is 0008a5ea.
eth1:  Tx descriptor 3 is 0008a5ea.
eth1: link up, 100Mbps, full-duplex, lpa 0x41E1
NETDEV WATCHDOG: eth1: transmit timed out
eth1: Transmit timeout, status 0c 0005 c07f media 10.
eth1: Tx queue start entry 4  dirty entry 0.
eth1:  Tx descriptor 0 is 0008a5ea. (queue head)
eth1:  Tx descriptor 1 is 0008a03c.
eth1:  Tx descriptor 2 is 0008a03c.
eth1:  Tx descriptor 3 is 0008a03c.
eth1: link up, 100Mbps, full-duplex, lpa 0x41E1
NETDEV WATCHDOG: eth1: transmit timed out

	And every time the netpipe program don't exit normally and the L4Linux is 
dead so that I must reboot it again.  Maybe it is a bug but I am not sure.
	Thank you.
											chenggh