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

Looks like a webgl crash.

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).

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

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.