[Webkit-unassigned] [Bug 61031] New: QtWebKit based browsers on Mac crash when displaying some pages with web fonts

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=61031

           Summary: QtWebKit based browsers on Mac crash when displaying
                    some pages with web fonts
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Macintosh Intel
        OS/Version: Mac OS X 10.6
            Status: UNCONFIRMED
          Severity: Major
          Priority: P2
         Component: WebKit Qt
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: igor.mikh at gmail.com


QtWebKit based Mac browsers (including Arora and fancybrowser sample shipped with Qt) may crash after the following steps are performed:

1. Open the page http://www.fontspring.com/ in the browser.
2. Press the Stop button while the page is being loaded (after at least one web font is loaded).
3. Open the page again.

Initially I reproduced this issue with a custom HTML page with web fonts. While searching for other pages that cause the crash I found that certain pages (sucha as http://www.google.com/webfonts) do not cause crash, while others (like Fontspring) do.

Crash logs from two different Macs are attached.

Environment details:
Qt: 4.7.3
QtWebKit: 2.0.2
WebKit: 533.3

Mac Configuration 1:
OS: Mac OS X 10.6.7
CPU: 1.66 GHz Intel Core Duo
RAM: 1 GB

Mac Configuration 2:
OS: Mac OS X 10.6.6
CPU: 2 GHz Intel Core 2 Duo
RAM: 1 GB

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