Bug#569672: exim4-daemon-heavy: Segfault (SIGABRT) when receiving mail

[Stefan Fritsch]

Package: exim4-daemon-heavy
Version: 4.69-9
Severity: important


about once a month, I get a segfault in exim4:

exim4[21903]: segfault at 7fff5bbcc634 ip 41e95c sp 7fff5bbcc600 error 6 in exim4[400000+c8000]
exim4[6096]:  segfault at 7fffe732d9f4 ip 41e95c sp 7fffe732d9c0 error 6 in exim4[400000+c8000]
exim4[14144]: segfault at 7fffa7709f14 ip 41e95c sp 7fffa7709ee0 error 6 in exim4[400000+c8000]
exim4[30055]: segfault at 7fff3922c644 ip 41e95c sp 7fff3922c610 error 6 in exim4[400000+c8000]
exim4[11577]: segfault at 7fff70cf40d4 ip 41e95c sp 7fff70cf40a0 error 6 in exim4[400000+c8000]

Signal 6 is SIGABRT, therefore I assumed this is not the same as #538340, but I
may be mistaken.  I don't use dovecot auth, therefore I don't think this is
#551106.

I have tried with

# cat /proc/sys/kernel/core_pattern
/var/core/%e_t%tp%pu%ug%gs%s
# cat /proc/sys/fs/suid_dumpable
2

but I still couldn't get a core dump, probably because of #511529.  Do you have
any idea how I could debug this? I can't trigger the bug, therefore running
exim with gdb is not an option.


-- System Information:
Debian Release: 5.0.4
  APT prefers stable
  APT policy: (990, 'stable'), (500, 'unstable')
Architecture: amd64 (x86_64)

Kernel: Linux 2.6.26-2-amd64 (SMP w/8 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-daemon-heavy depends on:
ii  debconf [debconf- 1.5.24                 Debian configuration management sy
ii  exim4-base        4.69-9                 support files for all Exim MTA (v4
ii  libc6             2.7-18lenny2           GNU C Library: Shared libraries
ii  libdb4.6          4.6.21-11              Berkeley v4.6 Database Libraries [
ii  libgnutls26       2.4.2-6+lenny2         the GNU TLS library - runtime libr
ii  libldap-2.4-2     2.4.11-1+lenny1        OpenLDAP libraries
ii  libmysqlclient15o 5.0.51a-24+lenny2+spu1 MySQL database client library
ii  libpam0g          1.0.1-5+lenny1         Pluggable Authentication Modules l
ii  libpcre3          7.6-2.1                Perl 5 Compatible Regular Expressi
ii  libperl5.10       5.10.0-19lenny2        Shared Perl library
ii  libpq5            8.3.9-0lenny1          PostgreSQL C client library
ii  libsasl2-2        2.1.22.dfsg1-23+lenny1 Cyrus SASL - authentication abstra
ii  libsqlite3-0      3.5.9-6                SQLite 3 shared library

exim4-daemon-heavy recommends no packages.

exim4-daemon-heavy suggests no packages.

-- debconf information:
  exim4-daemon-heavy/drec: