973147 - nexus4 UI freeze during WebRTC.

Status: RESOLVED INVALID

(Core :: Graphics: Layers, defect)

Description

[Sotaro Ikeda [:sotaro]]

+++ This bug was initially created as a clone of Bug #972623 +++

After fixing Bug 972623, when master nexus-4's connects WebRTC session long time by the STR in Bug 972623 Comment 0, all UI freeze at some point.

Comment 1

[Jason Smith [:jsmith]]

We should find out if this reproduces on a 1.4 production device.

Comment 2

[Sotaro Ikeda [:sotaro]]

The following functions seem to be related to the freeze. It seems like hw platform dependent problem. I am not sure what trigger the freeze.
- EGLImageCreateFromNativeBuffer()
- gl()->fEGLImageTargetTexture2D()

Comment 3

[Sotaro Ikeda [:sotaro]]

Attachment: stacktrace of the frezze

When the freeze happened, got the stacktrace. In this case, GLContext::fEGLImageTargetTexture2D() seems to get stuck.

Comment 4

[Sotaro Ikeda [:sotaro]]

Previsouly, the freeze happened relatively easily. But with same rom, the freeze still does not happen. Hmm.

Comment 5

[Sotaro Ikeda [:sotaro]]

(In reply to Jason Smith [:jsmith] from comment #1)
> We should find out if this reproduces on a 1.4 production device.

I do not have 1.4 production device.

Comment 6

[Sotaro Ikeda [:sotaro]]

(In reply to Sotaro Ikeda [:sotaro] from comment #4)
> Previsouly, the freeze happened relatively easily. But with same rom, the
> freeze still does not happen. Hmm.

After several minutes, the freeze happened too.

Comment 7

[Sotaro Ikeda [:sotaro]]

In nexus-7 case, there seems no ui hung, but camera hal seems to fall into stuck state after several minitures since started a webrtc session.

Comment 8

[Sotaro Ikeda [:sotaro]]

(In reply to Sotaro Ikeda [:sotaro] from comment #7)
> In nexus-7 case, there seems no ui hung, but camera hal seems to fall into
> stuck state after several minitures since started a webrtc session.

nexus-7 is flo(2013 version).