[CentOS] CentOS-4 Xen kernel with low RAM and Badness in local_bh_enable at kernel/softirq.c:141

Kingsly John member+centos at kingsly.net
Wed Dec 3 09:09:20 UTC 2008


Sorry about the multiple mails that came through to the list.

I'd been trying to send them out for over 20 hours and they wouldn't relay
through a openvpn tunnel because of the "Badness".

I had moved the queue manually and forgot to remove the mail that went
through.

> Dec  2 16:05:21 noc kernel: Badness in local_bh_enable at kernel/softirq.c:141
> Dec  2 16:05:21 noc kernel:  [<c0121178>] local_bh_enable+0x47/0x6f
> Dec  2 16:05:21 noc kernel:  [<c02177d5>] skb_checksum+0x133/0x25e
> Dec  2 16:05:21 noc kernel:  [<c0250f06>] udp_poll+0x66/0x113
> Dec  2 16:05:21 noc kernel:  [<c02135fd>] sock_poll+0x19/0x1d
> Dec  2 16:05:21 noc kernel:  [<c016d1a6>] do_select+0x190/0x2c7
> Dec  2 16:05:21 noc kernel:  [<c016ceb5>] __pollwait+0x0/0x9b
> Dec  2 16:05:21 noc kernel:  [<c0144ae4>] __kmalloc+0x56/0xd3
> Dec  2 16:05:21 noc kernel:  [<c016d5dc>] sys_select+0x2e7/0x45c
> Dec  2 16:05:21 noc kernel:  [<c010740f>] syscall_call+0x7/0xb

This seems to happen on certain mails which are relayed through an openvpn
connection on the router VM.(possibly everytime sendmail tries to clear the
queue.) And the mail never gets out and the the connection times out.

All test mails (one liners) went out without any problems via the VPN.

After sending one mail by-passing the VPN, i went ahead and switched the
kernel.. and now all my mails are relaying.

Kingsly
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