Public bug reported:
I have a dovecot IMAP service running.
It's all been running for a year or so. All OK.
The mail files are on an external disk, and teh service is run on
whichever of two systems finds that it has the disk at boot time.
I've upgraded these two servers from focal to groovy.
So I updated the backup server, switched the disk to it (so the dovecot
service ran there) updated the main server then switched the disk back
there. All seemed to be OK. I was still reading Mail OK on my laptop
with Thunderbird.
However, next day my wife (using Windows Live Mail) reported an error
message. A Delete operation had not completed and WL Mail was not happy.
A look at the dovecot logs showed lots of entries like this:
Oct 28 21:22:43 imap(ac...@my.example.com)<4212><ueSWw8Gy+M3AqAFl>: Fatal:
master: service(imap): child 4212 killed with signal 11 (core dumped)
Oct 28 21:22:43 imap(gordon.l...@my.example.com)<4211><UcqWw8Gy9s3AqAFl>:
Fatal: master: service(imap): child 4211 killed with signal 11 (core dumped)
Oct 28 21:22:43 imap(ac...@my.example.com)<4213><LumWw8Gy+s3AqAFl>: Fatal:
master: service(imap): child 4213 killed with signal 11 (core dumped)
Oct 28 21:23:22 imap(ac...@my.example.com)<4327><rGjpxcGy1qrAqAEY>: Fatal:
master: service(imap): child 4327 killed with signal 11 (core dumped)
These started on the backup (groovy) system once I switched to it and
continued when the service moved back to the main system (also by then
on groovy).
As noted, most of the service capability is was still there, but some
clients see client-side problems.
ProblemType: Bug
DistroRelease: Ubuntu 20.10
Package: dovecot-imapd 1:2.3.7.2-1ubuntu3.2
ProcVersionSignature: Ubuntu 5.8.0-26.27-generic 5.8.14
Uname: Linux 5.8.0-26-generic x86_64
ApportVersion: 2.20.11-0ubuntu50
Architecture: amd64
CasperMD5CheckResult: skip
Date: Thu Oct 29 18:57:41 2020
InstallationDate: Installed on 2020-05-14 (168 days ago)
InstallationMedia: Kubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423)
SourcePackage: dovecot
UpgradeStatus: Upgraded to groovy on 2020-10-28 (0 days ago)
** Affects: dovecot (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug groovy third-party-packages
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https://bugs.launchpad.net/bugs/1902128
Title:
Dovecot imapd server producing SIGSEGV in groovy
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