dovecot - Apr 2011 - imap-login: Panic: file ioloop.c: line 35 (io_add): assertion failed:

My dovecot directors (v2.0.8) had 3 instances of these yesterday:

	imap-login: Panic: file ioloop.c: line 35 (io_add): assertion failed: (fd >=
0)
	master: Error: service(imap-login): child 17374 killed with signal 6 (core
dumps disabled)

	imap-login: Panic: file ioloop.c: line 35 (io_add): assertion failed: (fd >=
0)
	master: Error: service(imap-login): child 1780 killed with signal 6 (core dumps
disabled)

	imap-login: Panic: file ioloop.c: line 35 (io_add): assertion failed: (fd >=
0)
	master: Error: service(imap-login): child 10349 killed with signal 6 (core
dumps disabled)

dovecot "assertion failed" normally scares me quite a bit, but I
don't
think this can be very bad, since it's only on the directors and we're
not doing lmtp here yet.. More of a FYI, and please let me know if I
should enable something to get better debug data if/when it happens again.



  -jf

On Fri, 2011-04-01 at 09:25 +0200, Jan-Frode Myklebust
wrote:
> My dovecot directors (v2.0.8) had 3 instances of these yesterday:
> 
> 	imap-login: Panic: file ioloop.c: line 35 (io_add): assertion failed: (fd
>= 0)
> 	master: Error: service(imap-login): child 17374 killed with signal 6 (core
dumps disabled)
Are these still happening? I don't see any obvious way for them to
happen.. There were no other errors logged, right? Could you try with
the attached patch? Hopefully then it logs where the io_add() is called
with wrong fd.

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On Mon, Apr 04, 2011 at 04:39:35PM +0300, Timo Sirainen
wrote:
> On Fri, 2011-04-01 at 09:25 +0200, Jan-Frode Myklebust wrote:
> > My dovecot directors (v2.0.8) had 3 instances of these yesterday:
> > 
> > 	imap-login: Panic: file ioloop.c: line 35 (io_add): assertion failed:
(fd >= 0)
> > 	master: Error: service(imap-login): child 17374 killed with signal 6
(core dumps disabled)
> 
> Are these still happening?
Yes, seems to be happening every second day or so.. Started without we
really changing anything, so it?s  a bit strange.
> I don't see any obvious way for them to
> happen.. There were no other errors logged, right? Could you try with
> the attached patch? Hopefully then it logs where the io_add() is called
> with wrong fd.
Thanks!

I probably woun?t be able to test the patch before after Easter, but if
they?re still happening then, I?ll apply it and report what we see.

 
  -jf