Bug 75624

Summary:	Web Inspector: Low Memory? Freeze/Crash when inspecting ImageData's CanvasPixelArray
Product:	WebKit	Reporter:	Chris H-C <chutten>
Component:	Web Inspector (Deprecated)	Assignee:	Nobody <webkit-unassigned>
Status:	RESOLVED DUPLICATE
Severity:	Normal	CC:	apavlov, bweinstein, chutten, joepeck, keishi, kpiascik, loislo, pfeldman, pmuellr, rik, timothy, yurys
Priority:	P2	Keywords:	NeedsReduction
Version:	528+ (Nightly build)
Hardware:	All
OS:	All
URL:	http://fooo.fr/~vjeux/epita/raytracer/raytracer.html#texturing

Description Chris H-C 2012-01-05 08:08:33 PST

When trying to expand a CanvasPixelArray data member of an ImageData object in the Scripts tab, the browser hogs memory and eventually freezes/crashes.

Issue present on at least BlackBerry Browser (BlackBerry PlayBook), Chromium 15 (Ubuntu), Chrome 17 (Windows XP).

The range of platforms suggests that it is javascript-engine independent (possible located in WebCore's bindings?) as Chrome uses v8 and the BlackBerry Browser uses JSC.

Reproduction steps:
1. Visit http://fooo.fr/~vjeux/epita/raytracer/raytracer.html#texturing
2. Inspect the Page
3. Navigate to Scripts
4. Apply breakpoint to trace.js:83 (Chrome seems to prefer :86)
5. Press "Ray Trace!"
6. When breakpoint is hit, add a watch expression for ctx.getImageData(0,0,this.width,this.height)
7. Expand the resultant ImageData
8. Attempt to expand 'data' the CanvasPixelArray member

Bug#67564 may or may not be interesting additional reading on this subject.

Comment 1 Pavel Feldman 2012-01-05 08:13:07 PST


*** This bug has been marked as a duplicate of bug 57320 ***