[Webkit-unassigned] [Bug 158075] New: WKWebView SIGSEV EXC_BAD_ACCESS 0x00000000bbadbeef acceleratedAnimationDidStart

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=158075

            Bug ID: 158075
           Summary: WKWebView SIGSEV EXC_BAD_ACCESS 0x00000000bbadbeef
                    acceleratedAnimationDidStart
    Classification: Unclassified
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: JavaScriptCore
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: ashwin.amit at chartboost.com

Created attachment 279782
  --> https://bugs.webkit.org/attachment.cgi?id=279782&action=review
html that crashes wkwebview

Hi,

I am running a WKWebView accessed through a Unity game. Unfortunately I don't have the source of the Unity game but I have HTML and crash logs. 100% of the time time, when I bring up a webview from this Unity game with the attached HTML, the process crashes.

The crash is quicker on iPad devices (have tried across multiple) but also crashes on iPhones as well.

I've looked at the app when running (I have an IPA) and I don't see memory useage or GPU useage particularly high, and I've tried doing things in a sample iOS project like loading my webview with same HTML and loading GPU textures both on main and background thread at same time but can't reproduce this crash in my own project. I've also tried bringing the WKWebView up under my own unity project and can't reproduce the crash.

Steps To Reproduce:
1. Load WKWebView under ios build of unity app (there are 2 games I've tried to bring it up under)
2. Display attached HTML

Expected Results:
3. HTML display, div height is animated

Actual Results:
3. Process crashes

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