[Xen-devel] Badness in local_bh_enable

[Nicholas Lee <nic-lists@xxxxxxxxxxxxxx>]

I'm getting a whole pile of this error messages in the dom0 syslog.

Mar  7 22:34:38 stateless kernel: Badness in local_bh_enable at 
kernel/softirq.c:140
Mar  7 22:34:38 stateless kernel:  [local_bh_enable+130/144] 
local_bh_enable+0x82/0x90
Mar  7 22:34:38 stateless kernel:  [skb_checksum+317/720] 
skb_checksum+0x13d/0x2d0
Mar  7 22:34:38 stateless kernel:  [udp_poll+154/352] udp_poll+0x9a/0x160
Mar  7 22:34:38 stateless kernel:  [sock_poll+41/64] sock_poll+0x29/0x40
Mar  7 22:34:38 stateless kernel:  [do_pollfd+149/160] do_pollfd+0x95/0xa0
Mar  7 22:34:38 stateless kernel:  [do_poll+106/208] do_poll+0x6a/0xd0
Mar  7 22:34:38 stateless kernel:  [sys_poll+353/576] sys_poll+0x161/0x240
Mar  7 22:34:38 stateless kernel:  [sys_gettimeofday+60/144] 
sys_gettimeofday+0x3c/0x90
Mar  7 22:34:38 stateless kernel:  [__pollwait+0/208] __pollwait+0x0/0xd0
Mar  7 22:34:38 stateless kernel:  [syscall_call+7/11] syscall_call+0x7/0xb
Mar  7 22:34:38 stateless kernel: Badness in local_bh_enable at 
kernel/softirq.c:140
Mar  7 22:34:38 stateless kernel:  [local_bh_enable+130/144] 
local_bh_enable+0x82/0x90
Mar  7 22:34:38 stateless kernel:  [skb_checksum+317/720] 
skb_checksum+0x13d/0x2d0
Mar  7 22:34:38 stateless kernel:  [udp_poll+154/352] udp_poll+0x9a/0x160
Mar  7 22:34:38 stateless kernel:  [sock_poll+41/64] sock_poll+0x29/0x40
Mar  7 22:34:38 stateless kernel:  [do_pollfd+149/160] do_pollfd+0x95/0xa0
Mar  7 22:34:38 stateless kernel:  [do_poll+106/208] do_poll+0x6a/0xd0
Mar  7 22:34:38 stateless kernel:  [sys_poll+353/576] sys_poll+0x161/0x240
Mar  7 22:34:38 stateless kernel:  [sys_gettimeofday+60/144] 
sys_gettimeofday+0x3c/0x90
Mar  7 22:34:38 stateless kernel:  [__pollwait+0/208] __pollwait+0x0/0xd0
Mar  7 22:34:38 stateless kernel:  [syscall_call+7/11] syscall_call+0x7/0xb


I suspect they a caused by some clash between bridging and running a
openvpn/tun in a domU. I'm not certain on this though.

AFAICT it doesn't seem to affect the operation of the machine.

Suggestions on how to track this down.

Version:
 Xen version 2.0.4 (nic@localdomain) (gcc version 3.3.5 (Debian 1:3.3.5-6)) Fri 
Feb 25 06:16:12 NZDT 2005
 Latest ChangeSet: 2005/02/04 13:01:10 1.1715 42037216PTjBGQVeEeiwiYxP_vJuyw


Thanks.
Nicholas


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