> Subject: Re: [dkim-milter-discuss]
>   Debugging (was Re: Canonicalization patches)
> Date: Wednesday August 22 2007
> From: "Murray S. Kucherawy" <[EMAIL PROTECTED]>
> To: dkim-milter general discussion
> <[email protected]>
>
> [...]
> Is that by any chance a 64-bit environment?  I've received one report that
> dkim-filter crashes a lot on FreeBSD 64-bit environments, but the reporter
> also provided no other forensics (e.g. a coredump with a -g build), and
> there's been only one such report.

Are there any news on these crashes?

Consider them confirmed using 2.2.1 on FreeBSD 6.2.

Our 2.2.0 (and now 2.2.1) on FreeBSD 6.2 in 32-bit mode is doing nicely
and is perfectly stable. A neighbour organization that is using the
same version of dkim-milter on the same version of FreeBSD, but in 64-mode,
has been complaining about crashes every couple of hours, so I added
a second milter to our setup, this one on a 64-bit FreeBSD platform,
and sure enough, it is crashing once or twice a day. The log doesn't
reveal anything unusual.

Now I have recompiled it with debugging options, and guess what,
it doesn't want to crash - a watched kettle never boils.

I was lucky to have captured a tcpdump on a milter session at the
moment the normally compiled version crashed, so this may give
a clue, although trying to simulate the situation I wasn't able
to cause a crash.

The last session before the crash had:
- MTA passess information about a new connect to milter:
  an IP address, host name, both look normal and resolvable;
- milter replies with a CONTINUE;
- MTA sends ACK;
- the smtp client apparently sits idling, keeping the connection open;
- some 50 seconds later milter closes the TCP connection sending FIN;
- MTA tries to pass a QUIT command to a milter, but it is already dead;

Any ideas?

  Mark



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