1231040 - Assertion failure: shouldYFlip || srcStride != dstStride (Performance trap -- should handle this case earlier to avoid memcpy), at dom/canvas/WebGLTexelConversions.cpp:381

Status: RESOLVED FIXED

(Core :: Graphics: CanvasWebGL, defect)

Description

[Bob Clary [:bc] (inactive)]

Attachment: minidump crash report

1. http://m.thehindu.com/news/national/latest-updates-on-chennai-floods/article7951783.ece

2. Assertion failure: shouldYFlip || srcStride != dstStride (Performance trap -- should handle this case earlier to avoid memcpy), at /builds/slave/m-cen-m64-d-000000000000000000/build/src/dom/canvas/WebGLTexelConversions.cpp:381

Reproduced Nightly/45 OSX 10.8

build: https://hg.mozilla.org/mozilla-central/rev/cc9c6cd756cb744596ba039dcc5ad3065a7cc3ea

I can reproduce with a saved version. I'll try to reduce.

Comment 1

[Bob Clary [:bc] (inactive)]

Attachment: testcase bug-1231040.tar.bz2

untar the file then load ./bug-1231040/m.thehindu.com/news/national/latest-updates-on-chennai-floods/index.html

You may need to create a new profile each time you want to reproduce this. I don't have time to work up a script that will recreate it each time in order to reduce it.

Comment 2

[Milan Sreckovic [:milan] (needinfo for best results)]

Jeff, what should we do here?

Comment 3

[Kelsey Gilbert [:jgilbert]]

Historically we hit this because we messed up an earlier branch; we really should be catching this before it gets here.

The profile requirement might be the CrashGuard stuff?

Comment 4

[Kelsey Gilbert [:jgilbert]]

Attachment: 0001-Fast-path-if-not-alpha-premultiplying.patch

Comment 5

[Pulsebot]

https://hg.mozilla.org/integration/mozilla-inbound/rev/495ff1195591

Comment 6

[Wes Kocher (:KWierso) (Not reading bugmail; email directly if needed)]

Backed out for build bustage like https://treeherder.mozilla.org/logviewer.html#?job_id=18621817&repo=mozilla-inbound

https://hg.mozilla.org/integration/mozilla-inbound/rev/c6fc9d77e86f

Comment 7

[Pulsebot]

https://hg.mozilla.org/integration/mozilla-inbound/rev/5ab4f7bd7eda

Comment 8

[Carsten Book [:Tomcat]]

https://hg.mozilla.org/mozilla-central/rev/5ab4f7bd7eda