[Webkit-unassigned] [Bug 134316] New: Crash in ScrollingTree::isRubberBandInProgress()

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=134316

           Summary: Crash in ScrollingTree::isRubberBandInProgress()
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Unspecified
        OS/Version: Unspecified
            Status: NEW
          Keywords: InRadar
          Severity: Normal
          Priority: P2
         Component: Layout and Rendering
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: bdakin at apple.com


There is a crash in ScrollingTree::isRubberBandInProgress() that seems to indicate that the ScrollingNode's ScrollingTree pointer is null. This seems to be a race condition that can occur when tearing down a page.

      3 libsystem_pthread.dylib:  _pthread_mutex_check_init + 17
        3 libsystem_pthread.dylib:  _pthread_mutex_lock + 28
   ==> 3 com.apple.WebCore:  WebCore::ScrollingTree::isRubberBandInProgress + 22 <==
            3 com.apple.WebCore:  WebCore::ScrollingTreeScrollingNode::updateBeforeChildren + 58
              3 com.apple.WebCore:  WebCore::ScrollingTreeScrollingNodeMac::updateBeforeChildren + 24
                3 com.apple.WebCore:  WebCore::ScrollingTree::updateTreeFromStateNode + 541
                  3 com.apple.WebCore:  WebCore::ScrollingTree::commitNewTreeState + 295
                    3 com.apple.WebCore:  WebCore::ThreadedScrollingTree::commitNewTreeState + 29
                      3 com.apple.WebCore:  WTF::FunctionWrapper<void  + 57
                        3 com.apple.WebCore:  WTF::BoundFunctionImpl<WTF::FunctionWrapper<void  + 44
                          3 com.apple.WebCore:  WebCore::ScrollingThread::dispatchFunctionsFromScrollingThread + 121
                            3 com.apple.WebCore:  WebCore::ScrollingThread::threadRunLoopSourceCallback + 65
                              3 com.apple.CoreFoundation:  

<rdar://problem/16247911>

-- 
Configure bugmail: https://bugs.webkit.org/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are the assignee for the bug.