HHVM 3.18.0 crash on Ubuntu 16.04 with Nginx

Just try to bring up an new HHVM host on Ubuntu 16.04 with Nginx.

But HHVM keep crush error in /var/log/hhvm/error.log
It created error log in /tmp

Here is a example:

ProcessID: 1549
ThreadID: 140594705856256
ThreadPID: 2188
Name: unknown program
Type: Aborted
Runtime: hhvm
Version: tags/HHVM-3.18.0-0-g9b285191feb2bb1558bb6682da135263bd2a9e60
DebuggerCount: 0

ThreadType: Web Request
Assertion Message: Failed to initialize central HHBC repository:
Failed to initialize schema in /var/run/hhvm/hhvm.hhbc(rw-r--r-- root:root):
Failed to open /var/www/.hhvm.hhbc: 14 - unable to open database file

Assertion Failure: /tmp/tmp.Fv54re7NgD/hphp/runtime/vm/repo.cpp:562: HPHP::Repo::initCentral()::__lambda62: assertion `false' failed.
URL: /wp-admin/admin-ajax.php

Run ls -alt /var/run/hhvm
Since upgrading to 3.18, hhvm is unable to open hhvm.hhbc as it is created as root instead of www-data.

For now the workaround is to add the following to your configuration: /etc/hhvm/server.ini

hhvm.repo.central.file_user=www-data
hhvm.repo.central.file_group=www-data
hhvm.repo.central.file_mode=493

Restart the HHVM service.

And it works.

Hope HHVM team can fix it in the next release.


Reference: https://github.com/facebook/hhvm/issues/7674