[Webkit-unassigned] [Bug 197856] New: Add assertions to help diagnose crash at WebProcessProxy::processPool()

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=197856

            Bug ID: 197856
           Summary: Add assertions to help diagnose crash at
                    WebProcessProxy::processPool()
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: New Bugs
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: sihui_liu at apple.com

-> 119      WebProcessPool& processPool() const { ASSERT(m_processPool); return *m_processPool.get(); }

Thread 0 Crashed ↩:: Dispatch queue: com.apple.main-thread
0   WebKit::WebsiteDataStore::processPools(unsigned long, bool) const + 114
1   WebKit::WebsiteDataStore::plugins() const + 53
2   WebKit::WebsiteDataStore::fetchDataAndApply(WTF::OptionSet<WebKit::WebsiteDataType>, WTF::OptionSet<WebKit::WebsiteDataFetchOption>, WTF::RefPtr<WTF::WorkQueue, WTF::DumbPtrTraits<WTF::WorkQueue> >&&, WTF::Function<void (WTF::Vector<WebKit::WebsiteDataRecord, 0ul, WTF::CrashOnOverflow, 16ul>)>&&) + 2024
3   WebKit::WebsiteDataStore::fetchDataForRegistrableDomains(WTF::OptionSet<WebKit::WebsiteDataType>, WTF::OptionSet<WebKit::WebsiteDataFetchOption>, WTF::Vector<WebCore::RegistrableDomain, 0ul, WTF::CrashOnOverflow, 16ul> const&, WTF::CompletionHandler<void (WTF::Vector<WebKit::WebsiteDataRecord, 0ul, WTF::CrashOnOverflow, 16ul>&&, WTF::HashSet<WebCore::RegistrableDomain, WebCore::RegistrableDomain::RegistrableDomainHash, WTF::HashTraits<WebCore::RegistrableDomain> >&&)>&&) + 167
4   WebKit::NetworkProcessProxy::deleteWebsiteDataInUIProcessForRegistrableDomains(PAL::SessionID, WTF::OptionSet<WebKit::WebsiteDataType>, WTF::OptionSet<WebKit::WebsiteDataFetchOption>, WTF::Vector<WebCore::RegistrableDomain, 0ul, WTF::CrashOnOverflow, 16ul>, WTF::CompletionHandler<void (WTF::HashSet<WebCore::RegistrableDomain, WebCore::RegistrableDomain::RegistrableDomainHash, WTF::HashTraits<WebCore::RegistrableDomain> >&&)>&&) + 130
5   WebKit::NetworkProcessProxy::didReceiveNetworkProcessProxyMessage(IPC::Connection&, IPC::Decoder&) + 9056

It seems m_processPool is nullptr in the crash trace above.

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