830390 - plugin-container crashes after channel error

Status: RESOLVED INCOMPLETE

(Core :: Graphics: CanvasWebGL, defect)

Description

[Albert [:albert]]

Tested in unagi with Gecko-1e1821a Gaia-9d4983b.

STR:
1-Launch browser
2-Go to url http://tinyurl.com/a3khmhq

Expected result --> Load url that uses WebGl 

Actual result --> Well, this is embarrassing. :( We tried to display this Web page, but it's not responding

Logcat shows:

I/Gecko   (  109): ###!!! [Parent][AsyncChannel] Error: Channel error: cannot send/recv

Comment 1

[Chris Jones [:cjones] inactive; ni?/f?/r? if you need me]

Looks like a webgl crash.

Comment 2

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

Reproduced on Otoro. It's a SIGKILL, so it's likely to be another OOM. (The WebGL scene looks quite heavy by the time it crashes).

Comment 3

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

Also, in logcat just before the send/recv failure, there is a GonkMemoryPressure:

I/GonkMemoryPressure(  105): Dispatching low-memory memory-pressure event
I/GonkMemoryPressure(  513): Dispatching low-memory memory-pressure event
D/memalloc(  105): /dev/pmem: Freeing buffer base:0x4a786000 size:245760 offset:1228800 fd:119
D/memalloc(  105): /dev/pmem: Freeing buffer base:0x4a8fe000 size:491520 offset:2768896 fd:160
D/memalloc(  105): /dev/pmem: Freeing buffer base:0x4a7c2000 size:245760 offset:1474560 fd:148
D/memalloc(  105): /dev/pmem: Freeing buffer base:0x4a7fe000 size:1048576 offset:1720320 fd:152
D/memalloc(  105): /dev/pmem: Freeing buffer base:0x4a976000 size:491520 offset:3260416 fd:166
I/Gecko   (  105): 
I/Gecko   (  105): ###!!! [Parent][AsyncChannel] Error: Channel error: cannot send/recv

Comment 4

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

The OOM always occurs after exactly 1485 WebGL calls here, so it's certainly related to WebGL. However, I am having a really hard time getting an about:memory dump for this one (basically, I'm OOM'ing before or during about:memory dumping). Since bug 820217 looks very similar and has an about:memory dump and a lot of investigation already, I'll keep working on that one.