Public bug reported:
After installing the latest round of updates to Ubuntu 16.04 Xenial,
Unison segfaults when synchronizing some files across SSH.
Steps
1. Install unison on a local machine running Ubuntu 14.04 LTS and a remote
device running Ubuntu 16.04 and unison_2.40.102-2ubuntu2.
2. Synchronize certain types of files. In my case, the Rhythmbox database and
1 GB+ .tar.gz archives both caused issues.
What happens
Unison aborts on the server side while the client displays: Uncaught exception
Failure("input_value: bad bigarray kind").
What should happen
Files are synchronized as usual.
Reverting to the previous version unison_2.40.102-2ubuntu1 from Wily and
below works around the issue. As Unison was rebuilt without changes (
http://changelogs.ubuntu.com/changelogs/pool/universe/u/unison/unison_2.40.102-2ubuntu2/changelog
), I don't know if a third-party library may have changed instead.
I attempted to capture the report using "apport-bug unison"; if I'm
missing information let me know! I can almost always reproduce this
issue.
ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: unison 2.40.102-2ubuntu2
ProcVersionSignature: Ubuntu 4.4.0-2.16-generic 4.4.0
Uname: Linux 4.4.0-2-generic x86_64
ApportVersion: 2.19.4-0ubuntu2
Architecture: amd64
Date: Mon Feb 8 17:48:02 2016
Dependencies:
gcc-5-base 5.3.1-8ubuntu2
libc6 2.21-0ubuntu5
libgcc1 1:5.3.1-8ubuntu2
InstallationDate: Installed on 2016-01-10 (29 days ago)
InstallationMedia: Ubuntu-Server 16.04 LTS "Xenial Xerus" - Alpha amd64
(20151115)
SourcePackage: unison
UpgradeStatus: No upgrade log present (probably fresh install)
** Affects: unison (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug regression-update xenial
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https://bugs.launchpad.net/bugs/1543374
Title:
[regression] Unison segfault when transferring data, "input_value: bad
bigarray kind"
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