[Webkit-unassigned] [Bug 201625] New: Nullptr crash in Page::sessionID() via WebKit::WebFrameLoaderClient::detachedFromParent2()

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=201625

            Bug ID: 201625
           Summary: Nullptr crash in Page::sessionID() via
                    WebKit::WebFrameLoaderClient::detachedFromParent2()
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Keywords: InRadar
          Severity: Normal
          Priority: P2
         Component: Page Loading
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: rniwa at webkit.org
                CC: beidson at apple.com

e.g.

0   com.apple.WebCore                   0x00007fff4cba0154 WebCore::Page::sessionID() const + 4
1   com.apple.WebKit                    0x00007fff4d7cb8a2 WebKit::WebFrameLoaderClient::detachedFromParent2() + 102
2   com.apple.WebCore                   0x00007fff4b5c3f57 WebCore::CachedFrame::destroy() + 87
3   com.apple.WebCore                   0x00007fff4b5c400d WebCore::CachedFrame::destroy() + 269
4   com.apple.WebCore                   0x00007fff4c854a71 WebCore::PageCache::removeAllItemsForPage(WebCore::Page&) + 129
5   com.apple.WebCore                   0x00007fff4b4e384b WebCore::Page::~Page() + 507
6   com.apple.WebKit                    0x00007fff4dc8ec5d std::__1::unique_ptr<WebCore::Page, std::__1::default_delete<WebCore::Page> >::reset(WebCore::Page*) + 25
7   com.apple.WebKit                    0x00007fff4dc8ebd4 WebKit::DeferredPageDestructor::tryDestruction() + 110
8   com.apple.WebKit                    0x00007fff4d7d0f43 WebKit::WebPage::close() + 1369
9   com.apple.WebKit                    0x00007fff4d836872 IPC::MessageReceiverMap::dispatchMessage(IPC::Connection&, IPC::Decoder&) + 114
10  com.apple.WebKit                    0x00007fff4dba7f32 WebKit::WebProcess::didReceiveMessage(IPC::Connection&, IPC::Decoder&) + 28
11  com.apple.WebKit                    0x00007fff4d81fc81 IPC::Connection::dispatchMessage(std::__1::unique_ptr<IPC::Decoder, std::__1::default_delete<IPC::Decoder> >) + 229
12  com.apple.WebKit                    0x00007fff4d8265cc WTF::Detail::CallableWrapper<IPC::Connection::enqueueIncomingMessage(std::__1::unique_ptr<IPC::Decoder, 

<rdar://problem/55160615>

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