unable to start (segmentation fault)

[Adam Poldauf]

I'm not able to start postsrsd due segmaintation fault

root@mail-proxymx-4:~$ dpkg -l | grep post
ii postfix 3.3.0-1ubuntu0.3 amd64 High-performance mail transport agent
ii postfix-mysql 3.3.0-1ubuntu0.3 amd64 MySQL map support for Postfix
ii postfix-pcre 3.3.0-1ubuntu0.3 amd64 PCRE map support for Postfix
ii postfix-policyd-spf-python 2.0.2-1 all Postfix policy server for SPF checking
ii postsrsd 1.4-1ubuntu0.1 amd64 Sender Rewriting Scheme (SRS) lookup table for Postfix
root@mail-proxymx-4:~$ lsb_release -rd
Description: Ubuntu 18.04.5 LTS
Release: 18.04
root@mail-proxymx-4:~$ apt-cache policy postsrsd
postsrsd:
  Installed: 1.4-1ubuntu0.1
  Candidate: 1.4-1ubuntu0.1
  Version table:
 *** 1.4-1ubuntu0.1 500
        500 http://archive.ubuntu.com/ubuntu bionic-updates/universe amd64 Packages
        500 http://security.ubuntu.com/ubuntu bionic-security/universe amd64 Packages
        100 /var/lib/dpkg/status
     1.4-1 500
        500 http://archive.ubuntu.com/ubuntu bionic/universe amd64 Packages
root@mail-proxymx-4:~$ postsrsd -4 -f 10005 -r 10006 -d example.com -s /etc/postsrsd.secret -u nobody
Segmentation fault

Just let me know if you need more info about env.

[Adam Poldauf (adampoldauf)]

It's caused by apparmor, with following it works

root@mail-proxymx-4:~$ cat /etc/apparmor.d/usr.sbin.postsrsd
#include <tunables/global>

/usr/sbin/postsrsd {
  #include <abstractions/base>
  #include <abstractions/nameservice>

  capability setuid,
  capability sys_chroot,
  /etc/postsrsd.secret r,
  /usr/sbin/postsrsd mr,
}