1337799 - High CPU usage and crash in AsyncShutdown timeout in Firefox with HTitle addon and webextensions with native messaging

Status: RESOLVED DUPLICATE of bug 1349874

(Firefox :: Extension Compatibility, defect)

Description

[Yuri Konotopov]

Attachment: Firefox console output

User Agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/56.0.2924.76 Safari/537.36

Steps to reproduce:

1. Install GNOME Shell integration webextension [1]
2. Install HTitle addon [2]
3. In HTitle settings enable "Work only in GNOME Shell" setting
4. Optionaly - restart Firefox

[1] https://addons.mozilla.org/en/firefox/addon/gnome-shell-integration/
[2] https://addons.mozilla.org/en/firefox/addon/htitle/


Actual results:

Firefox uses a lot of CPU and crash on exit


Expected results:

CPU usage should be normal and no crash happens

Comment 1

[Stefan [:StefanG_QA]]

Mozilla/5.0 (X11; Linux x86_64; rv:54.0) Gecko/20100101 Firefox/54.0 (20170213110223)

I was able to reproduce the issue on Ubuntu 16.04 amd64. After installing the both extensions Nightly start crashing every time when closing. Also I can observe the high CPU usage on my virtual machine.

Nightly is not crashing without the extensions.

Comment 2

[Yuri Konotopov]

Based on Firefox output I assume that HTitle's "@mozilla.org/process/util;" (?) breaks webextension's native messaging in some way.
I believe this will be reproducible with any native messaging capable webextension.

Comment 3

[Yuri Konotopov]

Attachment: native-messaging-example-host.py

Comment 4

[Yuri Konotopov]

Attachment: webext.helloworld.json

Comment 5

[Yuri Konotopov]

Attachment: manifest.json

Comment 6

[Yuri Konotopov]

Attachment: extension.js

This issue do not apply to GNOME Shell integration browser extension only, but refers to all browser extensions with native messaging capabilities.

I had attached simple hello world browser extension and Google's sample native messaging app.
Loading this sample hello world browser extension together with HTitle break Firefox with same symptoms.

Steps to reproduce:
1. Install HTitle addon
2. In HTitle settings enable "Work only in GNOME Shell" setting
3. Install native-messaging-example-host.py to /usr/local/bin/
4. Install webext.helloworld.json to /usr/lib/mozilla/native-messaging-hosts
5. Load hello world extension, that consists of two attached files: manifest.json and extension.js through about:debugging page
6. Quit Firefox.