Bug 291212 – Crash in TimerBase::stopSlowCase() via DNSResolveQueueCFNet::performDNSLookup

• Status: RESOLVED
• Resolution: FIXED
• Component: New Bugs

[Ryosuke Niwa]

e.g.
0   WebCore                       	       0x1a7f61510 WTFCrashWithInfo(int, char const*, char const*, int) + 24 (usr/local/include/wtf/Assertions.h:920) [inlined]
1   WebCore                       	       0x1a7f61510 WebCore::TimerBase::setNextFireTime(WTF::MonotonicTime) + 44 (WebCore/platform/Timer.cpp:525) [inlined]
2   WebCore                       	       0x1a7f61510 WebCore::TimerBase::stopSlowCase() + 252 (WebCore/platform/Timer.cpp:327)
3   WebCore                       	       0x1a7f614e8 WebThreadIsLockedOrDisabledInMainOrWebThread + 4 (WebCore/platform/ios/wak/WebCoreThread.mm:897) [inlined]
4   WebCore                       	       0x1a7f614e8 WebCore::TimerBase::setNextFireTime(WTF::MonotonicTime) + 4 (WebCore/platform/Timer.cpp:525) [inlined]
5   WebCore                       	       0x1a7f614e8 WebCore::TimerBase::stopSlowCase() + 212 (WebCore/platform/Timer.cpp:327)
6   WebCore                       	       0x1aa7b94b4 WebCore::TimerBase::stop() + 20 (WebCore/platform/Timer.h:207) [inlined]
7   WebCore                       	       0x1aa7b94b4 WebCore::DNSResolveQueueCFNet::performDNSLookup(WTF::String const&, WTF::Ref<WebCore::DNSResolveQueueCFNet::CompletionHandlerWrapper, WTF::RawPtrTraits<WebCore::DNSResolveQueueCFNet::CompletionHandlerWrapper>, WTF::DefaultRefDerefTraits<WebCore::DNSResolveQueueCFNet::CompletionHandlerWrapper>>&&)::$_1::operator()(nw_resolver_status_t, nw_array*)::&#39;lambda&#39;(std::experimental::fundamentals_v3::expected<WTF::Vector<WebCore::IPAddress, 0ul, WTF::CrashOnOverflow, 16ul, WTF::FastMalloc>, WebCore::DNSError>&&)::operator()(std::experimental::fundamentals_v3::expected<WTF::Vector<WebCore::IPAddress, 0ul, WTF::CrashOnOverflow, 16ul, WTF::FastMalloc>, WebCore::DNSError>&&) + 20 (WebCore/platform/network/cf/DNSResolveQueueCFNet.cpp:135) [inlined]
8   WebCore                       	       0x1aa7b94b4 WebCore::DNSResolveQueueCFNet::performDNSLookup(WTF::String const&, WTF::Ref<WebCore::DNSResolveQueueCFNet::CompletionHandlerWrapper, WTF::RawPtrTraits<WebCore::DNSResolveQueueCFNet::CompletionHandlerWrapper>, WTF::DefaultRefDerefTraits<WebCore::DNSResolveQueueCFNet::CompletionHandlerWrapper>>&&)::$_1::operator()(nw_resolver_status_t, nw_array*) + 524 (WebCore/platform/network/cf/DNSResolveQueueCFNet.cpp:157) [inlined]

<rdar://147916278>

[Ryosuke Niwa]

Pull request: https://github.com/WebKit/WebKit/pull/43754

[EWS]

Committed 293419@main (59247a7628dd): <https://commits.webkit.org/293419@main>

Reviewed commits have been landed. Closing PR #43754 and removing active labels.

[EWS]

Committed 289651.455@safari-7621-branch (6223bf2e7b8c): <https://commits.webkit.org/289651.455@safari-7621-branch>

Reviewed commits have been landed. Closing PR #3028 and removing active labels.