Re: [Xen-users] Badness in softirq.c / no modules loaded / relatedtonetwork interface

[Andy Smith <andy@xxxxxxxxxxxxxx>]

On Mon, May 30, 2005 at 02:08:46AM +0100, Ian Pratt wrote:
> It would be very helpful if you could try and work out which UDP
> application is triggering this, so we can try and create a simple recipe
> to reproduce the issue.

Every ping from dom0 to a domU will produce it:

$ ping strugglers.net
PING strugglers.net (212.13.198.70) 56(84) bytes of data.
May 30 01:29:36 curacao kernel: Badness in local_bh_enable at 
kernel/softirq.c:140
May 30 01:29:36 curacao kernel:  [local_bh_enable+130/144] 
local_bh_enable+0x82/0x90
May 30 01:29:36 curacao kernel:  [skb_checksum+317/704] skb_checksum+0x13d/0x2c0
May 30 01:29:36 curacao kernel:  [udp_poll+154/352] udp_poll+0x9a/0x160
May 30 01:29:36 curacao kernel:  [sock_poll+41/64] sock_poll+0x29/0x40
May 30 01:29:36 curacao kernel:  [do_pollfd+149/160] do_pollfd+0x95/0xa0
May 30 01:29:36 curacao kernel:  [do_poll+106/208] do_poll+0x6a/0xd0
May 30 01:29:36 curacao kernel:  [sys_poll+353/576] sys_poll+0x161/0x240
May 30 01:29:36 curacao kernel:  [sys_gettimeofday+60/144] 
sys_gettimeofday+0x3c/0x90
May 30 01:29:36 curacao kernel:  [__pollwait+0/208] __pollwait+0x0/0xd0
May 30 01:29:36 curacao kernel:  [syscall_call+7/11] syscall_call+0x7/0xb
May 30 01:29:37 curacao kernel: Badness in local_bh_enable at 
kernel/softirq.c:140
May 30 01:29:37 curacao kernel:  [local_bh_enable+130/144] 
local_bh_enable+0x82/0x90
May 30 01:29:37 curacao kernel:  [skb_checksum+317/704] skb_checksum+0x13d/0x2c0
May 30 01:29:37 curacao kernel:  [udp_poll+154/352] udp_poll+0x9a/0x160
May 30 01:29:37 curacao kernel:  [sock_poll+41/64] sock_poll+0x29/0x40
May 30 01:29:37 curacao kernel:  [do_pollfd+149/160] do_pollfd+0x95/0xa0
May 30 01:29:37 curacao kernel:  [do_poll+106/208] do_poll+0x6a/0xd0
May 30 01:29:37 curacao kernel:  [sys_poll+353/576] sys_poll+0x161/0x240
May 30 01:29:37 curacao kernel:  [sys_gettimeofday+60/144] 
sys_gettimeofday+0x3c/0x90
May 30 01:29:37 curacao kernel:  [__pollwait+0/208] __pollwait+0x0/0xd0
May 30 01:29:37 curacao kernel:  [syscall_call+7/11] syscall_call+0x7/0xb
64 bytes from strugglers.net (212.13.198.70): icmp_seq=1 ttl=64 time=0.093 ms
64 bytes from strugglers.net (212.13.198.70): icmp_seq=2 ttl=64 time=0.085 ms
64 bytes from strugglers.net (212.13.198.70): icmp_seq=3 ttl=64 time=0.092 ms
May 30 01:29:38 curacao kernel: Badness in local_bh_enable at 
kernel/softirq.c:140
May 30 01:29:38 curacao kernel:  [local_bh_enable+130/144] 
local_bh_enable+0x82/0x90
May 30 01:29:38 curacao kernel:  [skb_checksum+317/704] skb_checksum+0x13d/0x2c0
May 30 01:29:38 curacao kernel:  [udp_poll+154/352] udp_poll+0x9a/0x160
May 30 01:29:38 curacao kernel:  [sock_poll+41/64] sock_poll+0x29/0x40
May 30 01:29:38 curacao kernel:  [do_pollfd+149/160] do_pollfd+0x95/0xa0
May 30 01:29:38 curacao kernel:  [do_poll+106/208] do_poll+0x6a/0xd0
May 30 01:29:38 curacao kernel:  [sys_poll+353/576] sys_poll+0x161/0x240
May 30 01:29:38 curacao kernel:  [sys_gettimeofday+60/144] 
sys_gettimeofday+0x3c/0x90
May 30 01:29:38 curacao kernel:  [__pollwait+0/208] __pollwait+0x0/0xd0
May 30 01:29:38 curacao kernel:  [syscall_call+7/11] syscall_call+0x7/0xb
May 30 01:29:39 curacao kernel: Badness in local_bh_enable at 
kernel/softirq.c:140
May 30 01:29:39 curacao kernel:  [local_bh_enable+130/144] 
local_bh_enable+0x82/0x90
64 bytes from strugglers.net (212.13.198.70): icmp_seq=4 ttl=64 time=0.084 ms
May 30 01:29:39 curacao kernel:  [skb_checksum+317/704] skb_checksum+0x13d/0x2c0
May 30 01:29:39 curacao kernel:  [udp_poll+154/352] udp_poll+0x9a/0x160
May 30 01:29:39 curacao kernel:  [sock_poll+41/64] sock_poll+0x29/0x40
May 30 01:29:39 curacao kernel:  [do_pollfd+149/160] do_pollfd+0x95/0xa0
May 30 01:29:39 curacao kernel:  [do_poll+106/208] do_poll+0x6a/0xd0
May 30 01:29:39 curacao kernel:  [sys_poll+353/576] sys_poll+0x161/0x240
May 30 01:29:39 curacao kernel:  [sys_gettimeofday+60/144] 
sys_gettimeofday+0x3c/0x90
May 30 01:29:39 curacao kernel:  [__pollwait+0/208] __pollwait+0x0/0xd0
May 30 01:29:39 curacao kernel:  [syscall_call+7/11] syscall_call+0x7/0xb
64 bytes from strugglers.net (212.13.198.70): icmp_seq=5 ttl=64 time=0.085 ms
May 30 01:29:40 curacao kernel: Badness in local_bh_enable at 
kernel/softirq.c:140
May 30 01:29:40 curacao kernel:  [local_bh_enable+130/144] 
local_bh_enable+0x82/0x90
May 30 01:29:40 curacao kernel:  [skb_checksum+317/704] skb_checksum+0x13d/0x2c0
May 30 01:29:40 curacao kernel:  [udp_poll+154/352] udp_poll+0x9a/0x160
May 30 01:29:40 curacao kernel:  [sock_poll+41/64] sock_poll+0x29/0x40
May 30 01:29:40 curacao kernel:  [do_pollfd+149/160] do_pollfd+0x95/0xa0
May 30 01:29:40 curacao kernel:  [do_poll+106/208] do_poll+0x6a/0xd0
May 30 01:29:40 curacao kernel:  [sys_poll+353/576] sys_poll+0x161/0x240
May 30 01:29:40 curacao kernel:  [sys_gettimeofday+60/144] 
sys_gettimeofday+0x3c/0x90
May 30 01:29:40 curacao kernel:  [__pollwait+0/208] __pollwait+0x0/0xd0
May 30 01:29:40 curacao kernel:  [syscall_call+7/11] syscall_call+0x7/0xb
64 bytes from strugglers.net (212.13.198.70): icmp_seq=6 ttl=64 time=0.088 ms
May 30 01:29:41 curacao kernel: Badness in local_bh_enable at 
kernel/softirq.c:140
May 30 01:29:41 curacao kernel:  [local_bh_enable+130/144] 
local_bh_enable+0x82/0x90
May 30 01:29:41 curacao kernel:  [skb_checksum+317/704] skb_checksum+0x13d/0x2c0
May 30 01:29:41 curacao kernel:  [udp_poll+154/352] udp_poll+0x9a/0x160
May 30 01:29:41 curacao kernel:  [sock_poll+41/64] sock_poll+0x29/0x40
May 30 01:29:41 curacao kernel:  [do_pollfd+149/160] do_pollfd+0x95/0xa0
May 30 01:29:41 curacao kernel:  [do_poll+106/208] do_poll+0x6a/0xd0
May 30 01:29:41 curacao kernel:  [sys_poll+353/576] sys_poll+0x161/0x240
May 30 01:29:41 curacao kernel:  [sys_gettimeofday+60/144] 
sys_gettimeofday+0x3c/0x90
May 30 01:29:41 curacao kernel:  [__pollwait+0/208] __pollwait+0x0/0xd0
May 30 01:29:41 curacao kernel:  [syscall_call+7/11] syscall_call+0x7/0xb
64 bytes from strugglers.net (212.13.198.70): icmp_seq=7 ttl=64 time=0.082 ms

I'm pretty sure it's the ping that's triggering it there because if
I don't do anything then it can be several minutes between
occurences, but when I ping I get one occurence for every ping.

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