Bug 164955 – Assertion failures in ActiveDOMObject::~ActiveDOMObject under Database destructor

• Status: RESOLVED
• Resolution: FIXED
• Component: WebCore Misc.

[Chris Dumez]

Assertion failures in ActiveDOMObject::~ActiveDOMObject under Database destructor:
Thread 33 Crashed:: WebCore: Database
0   com.apple.JavaScriptCore      	0x0000000107739207 WTFCrash + 39
1   com.apple.WebCore             	0x0000000111220673 WebCore::ActiveDOMObject::~ActiveDOMObject() + 211
2   com.apple.WebCore             	0x0000000111823c80 WebCore::DatabaseContext::~DatabaseContext() + 288
3   com.apple.WebCore             	0x0000000111823ca5 WebCore::DatabaseContext::~DatabaseContext() + 21
4   com.apple.WebCore             	0x0000000111823cc9 WebCore::DatabaseContext::~DatabaseContext() + 25
5   com.apple.WebCore             	0x000000011181a863 WTF::ThreadSafeRefCounted<WebCore::DatabaseContext>::deref() const + 83
6   com.apple.WebCore             	0x000000011181a807 WTF::Ref<WebCore::DatabaseContext>::~Ref() + 55
7   com.apple.WebCore             	0x0000000111814c25 WTF::Ref<WebCore::DatabaseContext>::~Ref() + 21
8   com.apple.WebCore             	0x000000011180dbb5 WebCore::Database::~Database() + 421
9   com.apple.WebCore             	0x000000011180dc65 WebCore::Database::~Database() + 21
10  com.apple.WebCore             	0x000000011181dea9 WTF::ThreadSafeRefCounted<WebCore::Database>::deref() const + 73
11  com.apple.WebCore             	0x000000011182a534 void WTF::derefIfNotNull<WebCore::Database>(WebCore::Database*) + 52
12  com.apple.WebCore             	0x000000011182a4f3 WTF::RefPtr<WebCore::Database>::~RefPtr() + 83
13  com.apple.WebCore             	0x0000000111826bb5 WTF::RefPtr<WebCore::Database>::~RefPtr() + 21
14  com.apple.WebCore             	0x000000011182d984 WTF::HashTable<WTF::RefPtr<WebCore::Database>, WTF::RefPtr<WebCore::Database>, WTF::IdentityExtractor, WTF::PtrHash<WTF::RefPtr<WebCore::Database> >, WTF::HashTraits<WTF::RefPtr<WebCore::Database> >, WTF::HashTraits<WTF::RefPtr<WebCore::Database> > >::deallocateTable(WTF::RefPtr<WebCore::Database>*, unsigned int) + 84
15  com.apple.WebCore             	0x000000011182d75e WTF::HashTable<WTF::RefPtr<WebCore::Database>, WTF::RefPtr<WebCore::Database>, WTF::IdentityExtractor, WTF::PtrHash<WTF::RefPtr<WebCore::Database> >, WTF::HashTraits<WTF::RefPtr<WebCore::Database> >, WTF::HashTraits<WTF::RefPtr<WebCore::Database> > >::~HashTable() + 62
16  com.apple.WebCore             	0x000000011182d715 WTF::HashTable<WTF::RefPtr<WebCore::Database>, WTF::RefPtr<WebCore::Database>, WTF::IdentityExtractor, WTF::PtrHash<WTF::RefPtr<WebCore::Database> >, WTF::HashTraits<WTF::RefPtr<WebCore::Database> >, WTF::HashTraits<WTF::RefPtr<WebCore::Database> > >::~HashTable() + 21
17  com.apple.WebCore             	0x000000011182d6f5 WTF::HashSet<WTF::RefPtr<WebCore::Database>, WTF::PtrHash<WTF::RefPtr<WebCore::Database> >, WTF::HashTraits<WTF::RefPtr<WebCore::Database> > >::~HashSet() + 21
18  com.apple.WebCore             	0x000000011182cf75 WTF::HashSet<WTF::RefPtr<WebCore::Database>, WTF::PtrHash<WTF::RefPtr<WebCore::Database> >, WTF::HashTraits<WTF::RefPtr<WebCore::Database> > >::~HashSet() + 21
19  com.apple.WebCore             	0x000000011182c0d7 WebCore::DatabaseThread::databaseThread() + 1095
20  com.apple.WebCore             	0x000000011182bc1d WebCore::DatabaseThread::databaseThreadStart(void*) + 29
21  com.apple.JavaScriptCore      	0x00000001077b29f9 WTF::createThread(void (*)(void*), void*, char const*)::$_0::operator()() const + 25
22  com.apple.JavaScriptCore      	0x00000001077b29cd void std::__1::__invoke_void_return_wrapper<void>::__call<WTF::createThread(void (*)(void*), void*, char const*)::$_0&>(WTF::createThread(void (*)(void*), void*, char const*)::$_0&&&) + 45
23  com.apple.JavaScriptCore      	0x00000001077b296c std::__1::__function::__func<WTF::createThread(void (*)(void*), void*, char const*)::$_0, std::__1::allocator<WTF::createThread(void (*)(void*), void*, char const*)::$_0>, void ()>::operator()() + 44
24  com.apple.JavaScriptCore      	0x0000000106caa6ea std::__1::function<void ()>::operator()() const + 26
25  com.apple.JavaScriptCore      	0x00000001077b15ce WTF::threadEntryPoint(void*) + 158
26  com.apple.JavaScriptCore      	0x00000001077b3071 WTF::wtfThreadEntryPoint(void*) + 289
27  libsystem_pthread.dylib       	0x000000011dc2899d _pthread_body + 131
28  libsystem_pthread.dylib       	0x000000011dc2891a _pthread_start + 168
29  libsystem_pthread.dylib       	0x000000011dc26351 thread_start + 13

[Chris Dumez]

<rdar://problem/29336715>

[Chris Dumez]

Created attachment 295191 [details]
Patch

[Chris Dumez]

Comment on attachment 295191 [details]
Patch

Clearing flags on attachment: 295191

Committed r208908: <http://trac.webkit.org/changeset/208908>

[Chris Dumez]

All reviewed patches have been landed.  Closing bug.