[exim] Re: 4.52 segfaults on x86_64

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Autor: Axel Thimm
Datum:  
To: exim-users
CC: Carsten Koch-Mauthe
Alte Treads: Re: [exim] Re: 4.52 segfaults on x86_64
Betreff: [exim] Re: 4.52 segfaults on x86_64
Hello,

unfortunately the segfaults are still there with 4.54. :/

What can be done to help? There are no log messages from exim, I
dumped the traffic and it looks like exim bails out right after
getting the RCPT TO. Here is the scenario under 4.52, it is the same
with 4.54:

0.000000 <smtpclient> -> <exim> TCP 49883 > smtp [SYN] Seq=0 Ack=0 Win=5840 Len=0 MSS=1460 TSV=109455508 TSER=0 WS=0
0.000057 <exim> -> <smtpclient> TCP smtp > 49883 [SYN, ACK] Seq=0 Ack=1 Win=5792 Len=0 MSS=1460 TSV=2075899233 TSER=109455508 WS=2
0.016235 <smtpclient> -> <exim> TCP 49883 > smtp [ACK] Seq=1 Ack=1 Win=5840 Len=0 TSV=109455510 TSER=2075899233
3.929534 <exim> -> <smtpclient> SMTP Response: 220 mail.atrpms.net ESMTP Exim 4.52 Mon, 24 Oct 2005 19:15:19 +0200
3.945012 <smtpclient> -> <exim> TCP 49883 > smtp [ACK] Seq=1 Ack=70 Win=5840 Len=0 TSV=109455903 TSER=2075903163
3.945045 <smtpclient> -> <exim> SMTP Command: EHLO mx05.ispgateway.de
3.945357 <exim> -> <smtpclient> TCP smtp > 49883 [ACK] Seq=70 Ack=26 Win=5792 Len=0 TSV=2075903179 TSER=109455903
3.945898 <exim> -> <smtpclient> SMTP Response: 250-mail.atrpms.net Hello mx05.ispgateway.de [<smtpclient>]
3.963127 <smtpclient> -> <exim> SMTP Command: MAIL FROM:<dimitra.bekou@???> SIZE=1296
4.003421 <exim> -> <smtpclient> TCP smtp > 49883 [ACK] Seq=172 Ack=70 Win=5792 Len=0 TSV=2075903237 TSER=109455905
4.481178 <exim> -> <smtpclient> SMTP Response: 250 OK
4.497518 <smtpclient> -> <exim> SMTP Command: RCPT TO:<axel.thimm@???>
4.497704 <exim> -> <smtpclient> TCP smtp > 49883 [ACK] Seq=180 Ack=103 Win=5792 Len=0 TSV=2075903731 TSER=109455958
4.500203 <exim> -> <smtpclient> TCP smtp > 49883 [FIN, ACK] Seq=180 Ack=103 Win=5792 Len=0 TSV=2075903734 TSER=109455958
4.516956 <smtpclient> -> <exim> TCP 49883 > smtp [FIN, ACK] Seq=103 Ack=181 Win=5840 Len=0 TSV=109455960 TSER=2075903734
4.516975 <exim> -> <smtpclient> TCP smtp > 49883 [ACK] Seq=181 Ack=104 Win=5792 Len=0 TSV=2075903751 TSER=109455960

On Mon, Jul 11, 2005 at 11:10:25PM +0200, Carsten Koch-Mauthe wrote:
> Hello,
>
> Am Montag, 11. Juli 2005 11:08 schrieb Philip Hazel:
> > On Mon, 11 Jul 2005, Axel Thimm wrote:
> > > Update: The build w/o the domainkeys is segfaulting, too. So it is
> > > just the upgrade from 4.51 to 4.52 that causes segfaults. :(
> > >
> > > I downgraded to 4.51 for now. How can I help debug this?
> >
> > Is it certain messages that provoke the fault? If the segfaults are
> > rare, it is going to be difficult to find a way of reproducing the
> > problem with debugging turned on.
> >
>
> Same problem here. x86_64 System updated to 4.52 yesterday.
> I have some logs appended. First logs are from kernel and second are from
> exim. It seems the segfaults are related to ns lookups ?
>
> Gruß
> Carsten
>
> === Schnipp ===
> Jul 11 01:21:01 master kernel: exim[8371]: segfault at 000000000060b000 rip
> 00002aaaab75fe6b rsp 00007ffffffbcba8 error 6
>
> Jul 11 01:21:00 master exim[8370]: no host name found for IP address
> 220.117.248.203
> Jul 11 01:21:00 master exim[8371]: no host name found for IP address
> 220.117.248.203
> === Schnapp ===
>
> === Schnipp ===
> Jul 11 12:01:22 master kernel: exim[17419]: segfault at 000000000060b000 rip
> 00002aaaab75fe6b rsp 00007ffffffbcba8 error 6
> Jul 11 12:02:35 master kernel: exim[17477]: segfault at 000000000060b000 rip
> 00002aaaab75fe6b rsp 00007ffffffbcba8 error 6
>
> Jul 11 12:01:20 master exim[17419]: no host name found for IP address
> 218.150.88.135
> Jul 11 12:01:23 master exim[17428]: no host name found for IP address
> 218.234.142.53
> Jul 11 12:01:26 master exim[17428]: H=[218.234.142.53] rejected connection in
> "connect" ACL: Your IP is blacklisted. Please us
> e your ISP's SMTP to send mail for vienenbox.de . See also
> sbl-xbl.spamhaus.org
> Jul 11 12:01:26 master exim[17428]: H=[218.234.142.53] rejected connection in
> "connect" ACL: Your IP is blacklisted. Please us
> e your ISP's SMTP to send mail for vienenbox.de . See also
> sbl-xbl.spamhaus.org
> Jul 11 12:01:40 master exim[17437]: H=[219.155.95.200] rejected connection in
> "connect" ACL: Your IP is blacklisted. Please us
> e your ISP's SMTP to send mail for vienenbox.de
> Jul 11 12:01:40 master exim[17437]: H=[219.155.95.200] rejected connection in
> "connect" ACL: Your IP is blacklisted. Please us
> e your ISP's SMTP to send mail for vienenbox.de
> === Schnapp ===
>
>
> === Schnipp ===
> Jul 11 14:38:59 master kernel: exim[26569]: segfault at 000000000060b000 rip
> 00002aaaab75fe6b rsp 00007ffffffbcba8 error 6
> Jul 11 14:39:01 master kernel: exim[26578]: segfault at 000000000060b000 rip
> 00002aaaab75fe6b rsp 00007ffffffbcba8 error 6
> Jul 11 14:39:09 master kernel: exim[26585]: segfault at 000000000060b000 rip
> 00002aaaab75fe6b rsp 00007ffffffbcba8 error 6
>
> Jul 11 14:38:53 master exim[26569]: no host name found for IP address
> 222.142.117.70
> Jul 11 14:39:00 master exim[26578]: no host name found for IP address
> 84.55.140.38
> === Schnapp ===
>
>


--
Axel.Thimm at ATrpms.net