dovecot v2.3.0: imap segfault when sieve_extprograms_plugin.so called

[Rhys Williams]

Hi,

I have recently upgraded to dovecot v2.3 on Ubuntu 16.04.3 from repo.dovecot.org and I switched to IMAPSieve for rspamd with the guide from the wiki. When a mail is moved from Junk to another Inbox or vice-versa imap segfaults.

I have posted debug logs and versions below, any help will be greatly appreciated.

Thanks,
Rhys Williams

lux at bifrost:~$ dovecot --version
2.3.0 (c8b89eb)

lux at bifrost:~$ uname -a
Linux bifrost 4.10.0-43-generic #47~16.04.1-Ubuntu SMP Wed Dec 13 19:23:27 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux

Log of the crash: https://paste.ubuntu.com/26314370/ (https://paste.ubuntu.com/26314370/)
Core dump: https://paste.ubuntu.com/26314349/ (https://paste.ubuntu.com/26314349/)
dovecot -n: https://paste.ubuntu.com/26314365/ (https://paste.ubuntu.com/26314365/)