Public bug reported:
When using dovecot with vnd.dovecot.filter, where the filter returns at
least ~60KB of data back to dovecot, dovecot panics (see dovecot log in
attached apport report).
The error's origin is the pigeonhole plugin. The described error is
already fixed in the github repo for sieve-pigeonhole .
We successfully managed to apply the patch locally for ubuntu's current
version of pigeonhole (0.4.13 (7b14904)) by simply cherry picking the
Description: Ubuntu 16.04.1 LTS
$ doveconf | head -n2
# 2.2.22 (fe789d2): /etc/dovecot/dovecot.conf
# Pigeonhole version 0.4.13 (7b14904)
** Affects: dovecot (Ubuntu)
** Attachment added: "Information gathered by apport"
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Dovecot panics when sieve filter outputs much data
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