923530 - Consistently handle IPDL actor death in Gfx

Status: NEW

(Core :: Graphics, defect)

Description

[Benoit Jacob [:bjacob] (mostly away)]

This is a sort of meta bug for fixing once and for all the category of bug in gfx code caused by use-after-free of IPDL actors.

Examples:
 * use-after-free of PGrallocBuffer actor, see e.g. bug 912725 (among many --- see bug 834046 for older history)
 * use-after-free of PLayerTransaction actor, see e.g. bug 914823.

Intentionally not posting more details here. File blocking bugs about specific issues and solutions.

Comment 1

[Sotaro Ikeda [:sotaro]]

Bug 860892 is related to IPC error and crash in layer in b2g. The bug is also helpful to understand the problem.
- Bug 860892 - Add IPC failure handling in CompositorChild and ShadowLayers

Comment 2

[Benoit Jacob [:bjacob] (mostly away)]

I filed bug 932537 about refcounting GrallocBufferActor / SurfaceDescriptor's.