Bug#427664: exim4[9771] trap divide error rip:2b799ba4ab83 rsp:7fff0f023930 error:0

[Carlo Wood]

Package: exim4
Version: 4.63-17
Severity: grave
Justification: renders package unusable

After doing an 'apt-get upgrade' on Jun 2 around 18:30 CET, the
receiving of mail completely broke.

This upgrade installed version 4.63-17.
                               =======
The only errors could be found in /var/log/messages, of the sort:

Jun  2 18:33:10 hikaru kernel: exim4[31923] trap divide error rip:2b799ba4ab83 rsp:7fff0f023930 error:0
Jun  2 18:33:54 hikaru kernel: exim4[31949] trap divide error rip:2b799ba4ab83 rsp:7fff0f023930 error:0
Jun  2 18:34:08 hikaru kernel: exim4[31960] trap divide error rip:2b799ba4ab83 rsp:7fff0f023930 error:0
Jun  2 18:34:19 hikaru kernel: exim4[31970] trap divide error rip:2b799ba4ab83 rsp:7fff0f023930 error:0
and so on, probably one for every mail delivery attempt.

I did not notice this for three days :((

Just now I did - and then proceeded to download the source code of exim
from sid (not lenny), version 4.67-1. I compiled this on my box (which
runs 'testings') and installed it - after which mail worked again.

I think this error is extremely serious and don't understand how it is
possible that testing was broken this seriously for (at least) three
days. If this is known bug that was really fixed in sid, then this fix
should be released asap for testing. If not, then please let me know
and I'll downgrade to 4.63-17 again and try to find out what is causing
the problem.

-- System Information:
Debian Release: lenny/sid
  APT prefers testing
  APT policy: (990, 'testing'), (500, 'unstable')
Architecture: amd64 (x86_64)

Kernel: Linux 2.6.18-4-amd64 (SMP w/4 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/bash

Versions of packages exim4 depends on:
ii  debconf [debconf-2.0]         1.5.13     Debian configuration management sy
ii  exim4-base                    4.67-1     support files for all exim MTA (v4
ii  exim4-daemon-light            4.67-1     lightweight exim MTA (v4) daemon

exim4 recommends no packages.

-- debconf information:
  exim4/drec: