Date: Wed, 13 Feb 2002 13:34:48 -0400 (AST) From: "Marc G. Fournier" <scrappy@hub.org> To: Craig Hughes <craig@hughes-family.org> Cc: freebsd-stable@freebsd.org, <freebsd-hackers@freebsd.org>, <Spamassassin-talk@lists.sourceforge.net> Subject: Re: [SAtalk] Partial analysis of FreeBSD/spamass-milter hang ... Message-ID: <20020213133408.U19107-100000@mail1.hub.org> In-Reply-To: <1013619933.2782.75.camel@belphegore.hughes-family.org>
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Okay, have added what I think are the appropriate FreeBSD mailing lists
for this, since I know I can't answer this :(
On 13 Feb 2002, Craig Hughes wrote:
> Ok, any perl/BSD gurus out there? It spawns a new process but then
> hangs trying to read STDIN from the new subprocess? This is either a
> BSD bug or a perl-on-BSD bug, I think. There might be a way to work
> around it though -- the trick would be to find some other forking tcp
> daemon which does work...
>
> C
>
> On Tue, 2002-02-12 at 19:07, Marc G. Fournier wrote:
> >
> > Okay, here you go ... a hang:
> >
> > ===============
> > logmsg: connection from earth.hub.org [ 64.49.215.11 ] at port 4329
> > logmsg: before spawn
> >
> > logmsg: after spawn
> >
> > logmsg: connection from earth.hub.org [ 64.49.215.11 ] at port 4331
> > logmsg: before spawn
> >
> > logmsg: after spawn
> >
> > =================
> >
> > And pertinent area of code:
> >
> > =================
> > logmsg "before spawn\n";
> > spawn sub {
> > $|=1; # always immediately flush output
> >
> > logmsg "after spawn\n";
> > # First request line off stream
> > local $_ = <STDIN>;
> >
> > logmsg "got STDIN\n";
> > if (!defined $_) {
> > protocol_error ("(closed before headers)");
> > return 1;
> > }
> > =====================
> >
> > On 12 Feb 2002, Craig Hughes wrote:
> >
> > > Ok, interesting. n(spamc)+1 spamd's means that the fork already
> > > happened for both spamd's. Could you stick a trace on the spamd process
> > > though instead of spamass-milter? I'd like to try and figure out where
> > > it's getting to before it gets stuck. Possible alternative to ktrace
> > > (and possibly more useful) would be to add logging messages to the spamd
> > > code just after where it forks to see how far it's getting before it
> > > jams up.
> > >
> > > C
> > >
> > > On Tue, 2002-02-12 at 18:08, Marc G. Fournier wrote:
> > > >
> > > > Don't know how helpful this will be, but, just started it up and watched
> > > > it hang ...
> > > >
> > > > According to /var/log/maillog, as previously noted, the hang is based on a
> > > > simultaneous arrival of two messages:
> > > >
> > > > Feb 12 22:01:53 earth sendmail[91753]: g1D21pkw091747: to=<yvette@hub.org>, delay=00:00:02, xdelay=00:00:00, mailer=cyrus, pri=30679, relay=localhost, dsn=2.0.0, stat=Sent
> > > > Feb 12 22:01:53 earth sendmail[91692]: g1D21bkw091692: Milter add: header: X-Spam-Status: No, hits=0.0 required=5.0 tests= version=2.01
> > > > Feb 12 22:01:54 earth sendmail[91758]: g1D21bkw091692: to=<scrappy@hub.org>, delay=00:00:17, xdelay=00:00:01, mailer=cyrus, pri=138802, relay=localhost, dsn=2.0.0, stat=Sent
> > > > Feb 12 22:02:01 earth sendmail[91780]: g1D21wkw091780: from=<list@stockwatch.com>, size=13424, class=0, nrcpts=1, msgid=<4.2.0.58.20020212171327.0123fe90@mail2.stockwatch.com>, proto=ESMTP, daemon=MTA, relay=mail2.stockwatch.com [207.102.62.11]
> > > > Feb 12 22:02:01 earth sendmail[91819]: g1D221kw091819: from=<>, size=6395, class=0, nrcpts=1, msgid=<200202130201.g1D21vU91776@zanaco.com>, proto=ESMTP, daemon=MTA, relay=zanaco.com [64.49.215.210]
> > > >
> > > > processes of hte spam programs shows:
> > > >
> > > > earth# ps ax | grep spam
> > > > 90082 ?? IsJ 0:00.10 /usr/bin/perl /usr/local/bin/spamd -d -A 64.49.215.11 -u nobody -s local1
> > > > 91784 ?? IJ 0:00.00 /usr/bin/perl /usr/local/bin/spamd -d -A 64.49.215.11 -u nobody -s local1
> > > > 91821 ?? IJ 0:00.00 /usr/bin/perl /usr/local/bin/spamd -d -A 64.49.215.11 -u nobody -s local1
> > > > 90171 p1 IJ 0:00.20 /usr/local/bin/spamass-milter /var/run/spamass.sock
> > > > 91783 p1 IJ 0:00.01 /usr/local/bin/spamc
> > > > 91820 p1 IJ 0:00.01 /usr/local/bin/spamc
> > > >
> > > > And a tail end of a ktrace shows (before I killed off all the processes),
> > > > using kdump -l:
> > > >
> > > > (c) Copyright 2002 Canjex Publishing Ltd. http://www.stockwatch.com\r
> > > > \r
> > > > \r
> > > > \r
> > > > \r
> > > > \r
> > > > \r
> > > > **************************************************************************\r
> > > > A fee was NOT paid to Stockwatch for the distribution of this bulletin.\r
> > > > THIS IS NOT A RECOMMENDATION TO BUY OR SELL ANY SECURITY!\r
> > > > To remove yourself from this mailing list, access this URL:\r
> > > > http://www.stockwatch.com/sw/unsubscribe.dbm\r
> > > > For more information about this service please contact the\r
> > > > advertising department at Stockwatch 800.268.NEWS or 604.687.1500\r
> > > > *************************************************************************a\r
> > > > \r
> > > > "
> > > > 90171 spamass-milter RET write 13228/0x33ac
> > > >
> > > > And, after killing them off:
> > > >
> > > > **************************************************************************\r
> > > > A fee was NOT paid to Stockwatch for the distribution of this bulletin.\r
> > > > THIS IS NOT A RECOMMENDATION TO BUY OR SELL ANY SECURITY!\r
> > > > To remove yourself from this mailing list, access this URL:\r
> > > > http://www.stockwatch.com/sw/unsubscribe.dbm\r
> > > > For more information about this service please contact the\r
> > > > advertising department at Stockwatch 800.268.NEWS or 604.687.1500\r
> > > > *************************************************************************a\r
> > > > \r
> > > > "
> > > > 90171 spamass-milter RET write 13228/0x33ac
> > > > 90171 spamass-milter CALL poll(0x80a2800,0x1,0)
> > > > 90171 spamass-milter RET poll 1
> > > > 90171 spamass-milter CALL write(0x6,0xbfacbe24,0x5)
> > > > 90171 spamass-milter GIO fd 6 wrote 5 bytes
> > > > "\0\0\0\^Ac"
> > > > 90171 spamass-milter RET write 5
> > > > 90171 spamass-milter CALL poll(0x80a2800,0x1,0)
> > > > 90171 spamass-milter RET poll 1
> > > > 90171 spamass-milter CALL read(0x6,0xbfacbde4,0x5)
> > > > 90171 spamass-milter GIO fd 6 read 5 bytes
> > > > "\0\0\0\^AE"
> > > > 90171 spamass-milter RET read 5
> > > > 90171 spamass-milter CALL fstat(0x9,0xbfacbd0c)
> > > > 90171 spamass-milter RET fstat 0
> > > > 90171 spamass-milter CALL close(0x9)
> > > > 90171 spamass-milter RET close 0
> > > > 90171 spamass-milter CALL read(0xa,0xbfacb994,0x400)
> > > > 90171 spamass-milter PSIG SIGTERM caught handler=0x2812c4b4 mask=0x0 code=0x0
> > > > 90171 spamass-milter RET read RESTART
> > > > 90171 spamass-milter CALL sigreturn(0xbfacb6cc)
> > > > 90171 spamass-milter RET sigreturn JUSTRETURN
> > > > 90171 spamass-milter CALL read(0xa,0xbfacb994,0x400)
> > > > 90171 spamass-milter PSIG SIGKILL SIG_DFL
> > > > earth#
> > > >
> > > > does this help any?
> > > >
> > > >
> > > >
> > > >
> > > > _______________________________________________
> > > > Spamassassin-talk mailing list
> > > > Spamassassin-talk@lists.sourceforge.net
> > > > https://lists.sourceforge.net/lists/listinfo/spamassassin-talk
> > > >
> > > >
> > >
> > >
> >
> >
>
>
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