On Thu, Apr 10, 2014 at 09:39:37AM -0300, Hugo Osvaldo Barrera wrote:
> On 2014-04-10 14:32, Gilles Chehade wrote:
> > On Thu, Apr 10, 2014 at 09:12:03AM -0300, Hugo Osvaldo Barrera wrote:
> > > I updated OpenBSD to 5.5-current (using snapshots) yesterday, and THEN
> > > installed opensmtpd-latest.
> > > 
> > > After running for a short while, smtpd simply exits.
> > > 
> > > I'm guessing I should understand something from the line: 
> > > "smtpd: session_imsg: unexpected IMSG_LKA_AUTHENTICATE imsg"
> > > 
> > 
> > The config below is irrelevant, this crash was introduced by the
> > processes merging in OpenBSD, it was fixed the day after.
> > 
> 
> Huh? I don't think I understood what you meant.
> 

The crash you see is not caused by the configuration, it is caused by
a logic error during our merging of multiple processes:

  
http://www.openbsd.org/cgi-bin/cvsweb/src/usr.sbin/smtpd/pony.c?rev=1.1;content-type=text%2Fx-cvsweb-markup
  
http://www.openbsd.org/cgi-bin/cvsweb/src/usr.sbin/smtpd/lka.c?rev=1.165;content-type=text%2Fx-cvsweb-markup

It was reported by jturner@, the day after and we could reproduce and
understand the issue which was later fixed with commit:

  
http://www.openbsd.org/cgi-bin/cvsweb/src/usr.sbin/smtpd/lka.c.diff?r1=1.165;r2=1.166;f=h

The issue no longer exists in the latest src on OpenBSD and in
OpenBSD snapshots that were generated after the commit above.


> > You can't be experiencing it with opensmtpd-latest because we've
> > not generated snapshots with this merging, you probably missed a
> > step when installing.
> > 
> 
> That's what I though, so I reinstalled opensmtpd-latest. The issue
> persisted, and that's when I gathered these logs.
> 

I can guarantee you that you somehow failed to reinstall opensmtpd-latest
because our latest snapshot has been generated looooooooong before we had
started the processes merging that led to this bug ... also:

     "smtpd: session_imsg: unexpected IMSG_LKA_AUTHENTICATE imsg"

The file that contains that fatal() does not even exist in opensmtpd-latest.c,
it was introduced in OpenBSD the 2014-04-04 (see function pony_imsg()):

    
http://www.openbsd.org/cgi-bin/cvsweb/src/usr.sbin/smtpd/pony.c?rev=1.1;content-type=text%2Fx-cvsweb-markup

whereas opensmtpd-latest dates from 2014-03-26

somehow you're not running the code you think you're running :-)


> > I suggest that you cvs up src/usr.sbin/smtpd on -current, you'll
> > see the bug disappear ;-)
> > 
> 
> So I though stick with the smtpd in -current until a new snapshot arrives?
> 

eric@ is bringing back the changes we made to the openbsd tree to our
master branch so we should generate a new snapshot this week-end.

The OpenBSD tree will ship with OpenSMTPD 5.4.3 which is basically 5.4.2
with some enhancements for low cpu / low memory machines + several
processes merged into a single one, no new feature.

Our next snapshot will be opensmtpd-latest (this means filter code and
some other experimental stuff) + the improvements we did in OpenBSD.


-- 
Gilles Chehade

https://www.poolp.org                                          @poolpOrg

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