1307329 - Make WebRTC usable on Yocto

Status: RESOLVED WORKSFORME

(Core :: WebRTC: Audio/Video, defect)

Description

[Takuro Ashie [:ashie]]

For bug1305341 I tested WebRTC on Yocto 2.1 on Wandboard.
I used an UVC video camera.

* Wandboard: http://www.wandboard.org/
* Yocto on Wandboard: http://wiki.wandboard.org/index.php/Getting_started_with_Yocto_on_Wandboard
* Firefox recipe: https://github.com/mozilla-japan/meta-browser

I built Firefox with WebRTC support.

When I start Firefox Hello or any other WebRTC services the camera device is recognized and it appears on the device list. But when I try to start video chat, the browser crashes. I don't investigate the detail yet.

On Ubuntu 14.04 on PC I succeeded to use WebRTC with almost same mozconfig.

I should get more information from the device and other environments.

Comment 1

[Randell Jesup [:jesup] (needinfo me)]

We'd need a crash stack at minimum to start with.

You can also run with MOZ_LOG=MediaManager:4,GetUserMedia:4,webrtc_trace:65535,signaling:4 WEBRTC_TRACE_FILE=nspr and collect logs

Comment 2

[Takuro Ashie [:ashie]]

Attachment: Stack trace

Comment 3

[Takuro Ashie [:ashie]]

Attachment: log

Comment 4

[Takuro Ashie [:ashie]]

In addition, I got the following console message:

mmap() failed: Cannot allocate memory
mmap() failed: Cannot allocate memory
...
mmap() failed: Cannot allocate memory
mmap() failed: Cannot allocate memory
out of memory: 0x0000000000151800 bytes requested
Segmentation fault

Comment 5

[Takuro Ashie [:ashie]]

But when I run firefox on GDB, the issue doesn't reproduce (WebRTC works fine).
The stack trace is taken from a core file.

Comment 6

[Takuro Ashie [:ashie]]

The camera device I used: Logicool C910 & C920

Comment 7

[Randell Jesup [:jesup] (needinfo me)]

(In reply to Takuro Ashie from comment #6)
> The camera device I used: Logicool C910 & C920

Logicool is apparently what Logitech is known as in Japan and maybe elsewhere

Comment 8

[Randell Jesup [:jesup] (needinfo me)]

The stack trace is a crash in Garbage Collection code.  This implies some type of memory corruption.  Note: I test with a c920 camera frequently, as do others.

You may need to build an ASAN build using clang track this down, if that will work on your platform.  https://developer.mozilla.org/en-US/docs/Mozilla/Testing/Firefox_and_Address_Sanitizer

Comment 9

[Takuro Ashie [:ashie]]

It works with recent code:

https://github.com/webdino/meta-browser/tree/firefox-52esr
https://github.com/webdino/meta-browser/tree/firefox-60esr