[Webkit-unassigned] [Bug 68926] New: REGRESSION: r96101: Crash in WebCore::Frame::contentRenderer()

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=68926

           Summary: REGRESSION: r96101: Crash in
                    WebCore::Frame::contentRenderer()
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Macintosh Intel
        OS/Version: Mac OS X 10.7
            Status: UNCONFIRMED
          Severity: Critical
          Priority: P2
         Component: WebCore Misc.
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: kevin at rhubarbproductions.com


Since upgrading to r96101, my tabs keep on unexpectedly reloading due to Web Process crashes. 12 times so far.

Thread 0 Crashed:: Dispatch queue: com.apple.main-thread
0   com.apple.WebCore                 0x0000000109aae6e6 WebCore::Frame::contentRenderer() const + 4
1   com.apple.WebCore                 0x0000000109acf0e0 non-virtual thunk to WebCore::FrameView::layerForVerticalScrollbar() const + 16
2   com.apple.WebCore                 0x000000010a0c5540 WebCore::ScrollableArea::invalidateScrollbar(WebCore::Scrollbar*, WebCore::IntRect const&) + 104
3   com.apple.WebCore                 0x000000010a0d0461 WebCore::ScrollView::setHasVerticalScrollbar(bool) + 343
4   com.apple.WebCore                 0x0000000109ad3346 WebCore::FrameView::~FrameView() + 232
5   com.apple.WebCore                 0x000000010987cc7c WebCore::CachedFrame::clear() + 174
6   com.apple.WebCore                 0x000000010987e765 WebCore::CachedPage::destroy() + 27
7   com.apple.WebCore                 0x0000000109f60df8 WebCore::PageCache::releaseAutoreleasedPagesNow() + 138
8   com.apple.WebCore                 0x000000010a1e3e5e WebCore::ThreadTimers::sharedTimerFiredInternal() + 120
9   com.apple.WebCore                 0x000000010a0ea357 _ZN7WebCoreL10timerFiredEP16__CFRunLoopTimerPv + 55
10  com.apple.CoreFoundation          0x00007fff89ca4694 __CFRUNLOOP_IS_CALLING_OUT_TO_A_TIMER_CALLBACK_FUNCTION__ + 20
11  com.apple.CoreFoundation          0x00007fff89ca41e6 __CFRunLoopDoTimer + 534
12  com.apple.CoreFoundation          0x00007fff89c84ba1 __CFRunLoopRun + 1617
13  com.apple.CoreFoundation          0x00007fff89c84216 CFRunLoopRunSpecific + 230
14  com.apple.HIToolbox               0x00007fff91dfb4ff RunCurrentEventLoopInMode + 277
15  com.apple.HIToolbox               0x00007fff91e02c21 ReceiveNextEventCommon + 355
16  com.apple.HIToolbox               0x00007fff91e02aae BlockUntilNextEventMatchingListInMode + 62
17  com.apple.AppKit                  0x00007fff92b1b191 _DPSNextEvent + 659
18  com.apple.AppKit                  0x00007fff92b1aa95 -[NSApplication nextEventMatchingMask:untilDate:inMode:dequeue:] + 135
19  com.apple.AppKit                  0x00007fff92b173d6 -[NSApplication run] + 463
20  com.apple.WebKit2                 0x000000010921c555 RunLoop::run() + 125
21  com.apple.WebKit2                 0x0000000109262b81 WebKit::WebProcessMain(WebKit::CommandLine const&) + 587
22  com.apple.WebKit2                 0x00000001092371b0 WebKitMain + 268
23  com.apple.WebProcess              0x000000010908be56 main + 234
24  com.apple.WebProcess              0x000000010908bd64 start + 52

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