[nycbug-talk] FreeBSD help (segfaults on Sunday)

[Marco Scoffier]

Hello everyone, sorry I couldn't make it to the party last night, hope
it was fun.

I am getting some weird log messages on a FreeBSD 5.4 box which I am
using mainly as an svn host and file server for myself.  I setup one
jail which is hosting a php/mysql app called Drupal (which is exposed to
the world).  The machine is behind a firewall which forwards two ports
to the box: 22 for ssh and ssh+svn to the main machine 192.168.1.11 and
port 80 to the jail 192.168.1.12  lately I have been getting many
strange messages in the kernel log output which I hope some of you can
help me to interpret.  Despite the messages, the box seems to be fine
any services I use are up and doing fine.

There are many connections to 512 which sounds scary (rexec) but from
localhost to localhost,  and to 113 (ident)  I've been getting these for
a while, but chalked it up to some internal things which may be common
to FreeBSD.  Recently (last week or so) there have been many segfaults
(signal 11) and aborts (signal 6) of random applications: like today
sendmail, but also had perl and httpd segfault (signal 11 repeated
times).  I rebooted a few days ago and the segfaults/aborts went away
for a few days, now they are back in force:

> pid 19721 (sendmail), uid 0: exited on signal 6
> Connection attempt to UDP 127.0.0.1:512 from 127.0.0.1:60950
> pid 19722 (sendmail), uid 0: exited on signal 6
> pid 19730 (sendmail), uid 0: exited on signal 6
> pid 19848 (sendmail), uid 0: exited on signal 6
> Connection attempt to TCP 192.168.1.12:113 from 192.168.1.12:52404
> flags:0x02
> Connection attempt to UDP 192.168.1.12:512 from 192.168.1.12:52096
> Connection attempt to TCP 192.168.1.12:113 from 192.168.1.12:58066
> flags:0x02
> Connection attempt to UDP 192.168.1.12:512 from 192.168.1.12:54896
> Connection attempt to TCP 127.0.0.1:113 from 127.0.0.1:51821
> flags:0x02
> pid 19990 (sendmail), uid 0: exited on signal 6

Pointers appreciated,

-- 
Marco