Dovecot LDA w/ Sieve panics on deliver - bad file descriptor

[Daniel]

After upgrading my mailserver to 16.04 I noticed that LDA delivery from Postfix->Dovecot->my IMAP mailbox was intermittently failing. The logs showed

"dovecot: lda(daniel): Panic: epoll_ctl(del, 10) failed: Bad file descriptor"

A Google search led me to a Dovecot mailing list bug report[0] from March, and the subsequent reply[1] that led to a patch[2] from the maintainers to lib-sieve that addresses the bug at fault.

Applying the patch commit[2] to my local Dovecot has fixed the panics and mail delivery is once again reliable.

Thanks so much! Let me know if I can provide any other useful information.

-cpu

[0]: http://www.dovecot.org/list/dovecot/2016-March/103668.html
[1]: http://www.dovecot.org/list/dovecot/2016-March/103694.html
[2]: https://github.com/dovecot/pigeonhole/commit/a95b0579b89c13fb3ee5700e76cbe6a4a3e898e0

System information:

Distributor ID: Ubuntu
Description: Ubuntu 16.04.1 LTS
Release: 16.04
Codename: xenial

doveconf | head -n 2
# 2.2.22 (fe789d2): /etc/dovecot/dovecot.conf
# Pigeonhole version 0.4.13 (7b14904)

dovecot-core: 1:2.2.22-1ubuntu2.1
dovecot-imapd: 1:2.2.22-1ubuntu2.1
dovecot-lmtpd: 1:2.2.22-1ubuntu2.1
dovecot-sieve: 1:2.2.22-1ubuntu2.1

[Christian Ehrhardt  (paelzer)]

Thanks for your report, we already work on that in bug 1633220.
Closing this one as dup, but please I want to welcome you to help us there with verification of ppa, proposed uploads and such.

[Daniel (ccppuu)]

Thanks! Apologies for the dupe.