I am experiencing a random crash in my application, the stack trace does not contain any code, and I'm struggling to figure out what causes it. The stack trace is always the same:
#0 0x00007fff903610e9 in __cxa_throw () #1 0x00007fff922199c2 in Security::UnixError::throwMe(int) () #2 0x00007fff920b068d in Security::safeCopyFile(char const*, unsigned int, char const*, unsigned short) () #3 0x00007fff920af765 in Security::MDSSession::updateDataBases() () #4 0x00007fff9211318b in Security::MDSSession::DbOpen(char const*, cssm_net_address const*, unsigned int, Security::AccessCredentials const*, void const*, long&) () #5 0x00007fff9211300b in mds_DbOpen(long, char const*, cssm_net_address const*, unsigned int, cssm_access_credentials const*, void const*, long*) () #6 0x00007fff920aebee in Security::MDSClient::Directory::cdsa() const () #7 0x00007fff922013ee in Security::MDSClient::Directory::dlGetFirst(cssm_query const&, cssm_db_record_attribute_data&, cssm_data*, cssm_db_unique_record*&) () #8 0x00007fff920ae6db in Security::CssmClient::Table<Security::MDSClient::Common>::startQuery(Security::CssmQuery const&, bool) () #9 0x00007fff920ae1e9 in Security::CssmClient::Table<Security::MDSClient::Common>::find(Security::CssmClient::Query const&) () #10 0x00007fff920ae140 in Security::CssmClient::Table<Security::MDSClient::Common>::fetch(Security::CssmClient::Query const&, int) () #11 0x00007fff920ad71f in MdsComponent::MdsComponent(Security::Guid const&) () #12 0x00007fff920ad29b in CssmManager::loadModule(Security::Guid const&, unsigned int, Security::ModuleCallback const&) () #13 0x00007fff920ad1a2 in CSSM_ModuleLoad () #14 0x00007fff92138db2 in loadModule () #15 0x00007fff921093c1 in attachToModules () #16 0x00007fff9210931d in attachToAll () #17 0x00007fff92109253 in SSLNewContext () #18 0x00007fff95016162 in SocketStream::securitySetInfo_NoLock(__CFDictionary const*) () #19 0x00007fff950159fd in SocketStream::setProperty(void const*, __CFString const*, void const*) () #20 0x00007fff9501552c in virtual thunk to SocketStream::setProperty(void const*, __CFString const*, void const*) () #21 0x00007fff950160db in ReadStreamCallbacks::_setProperty(__CFReadStream*, __CFString const*, void const*, void*) () #22 0x00007fff8f4ef604 in CFReadStreamSetProperty () #23 0x00007fff9501457e in HTTPNetConnection::createStreams(__CFWriteStream**, __CFReadStream**) () #24 0x00007fff95014426 in NetConnection::initialize(NetConnection::Options&) () #25 0x00007fff95014354 in HTTPNetConnection::initialize(__CFString const*, int, unsigned int, __CFDictionary const*, NetConnection::Options&) () #26 0x00007fff950142ab in HTTPNetConnection_NoAuth::initialize(__CFString const*, int, unsigned int, __CFDictionary const*, NetConnection::Options&) () #27 0x00007fff950141d4 in CFHTTPConnectionCreate () #28 0x00007fff95014089 in HTTPConnectionCacheEntry::findOrCreateEmptyUnauthenticatedNetConnection(HTTPProtocol*, __CFHTTPMessage*, unsigned char*, __CFError**) () #29 0x00007fff95012f84 in HTTPConnectionCacheEntry::enqueueRequestForProtocol(HTTPProtocol*, __CFHTTPMessage*) () #30 0x00007fff95012901 in HTTPConnectionCache::EnqueueRequestForProtocol(HTTPProtocol*, __CFHTTPMessage*) () #31 0x00007fff9500f283 in HTTPProtocol::createStream() () #32 0x00007fff9500eb82 in HTTPProtocol::createAndOpenStream() () #33 0x00007fff9500cef1 in URLConnectionLoader::loaderScheduleOriginLoadLocked(_CFURLRequest const*) () #34 0x00007fff950dec12 in URLConnectionLoader::loaderScheduleOriginLoad(_CFURLRequest const*) () #35 0x00007fff950de637 in URLConnectionLoader::LoaderConnectionEventQueue::processAllEventsAndConsumePayload(XConnectionEventInfo<XLoaderEvent, XLoaderEventParams>*, long) () #36 0x00007fff9500c959 in URLConnectionLoader::processEvents() () #37 0x00007fff950079ee in MultiplexerSource::perform() () #38 0x00007fff8f45a6e1 in __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ () #39 0x00007fff8f459f4d in __CFRunLoopDoSources0 () #40 0x00007fff8f480d39 in __CFRunLoopRun () #41 0x00007fff8f480676 in CFRunLoopRunSpecific () #42 0x00007fff8dad5ffb in +[NSURLConnection(NSURLConnectionReallyInternal) _resourceLoadLoop:] () #43 0x00007fff8daca74e in -[NSThread main] () #44 0x00007fff8daca6c6 in __NSThread__main__ () #45 0x00007fff8f3b48bf in _pthread_start () #46 0x00007fff8f3b7b75 in thread_start ()
I have several other threads, but all my threads are sleeping, waiting for input, and only one interesting thread looks like this:
#0 0x00007fff90342a8e in pread () #1 0x00007fff8ba90ce5 in unixRead () #2 0x00007fff8ba8cc33 in sqlite3BtreeOpen () #3 0x00007fff8ba88fc6 in openDatabase () #4 0x00007fff95002c7d in __CFURLCache::OpenDatabase() () #5 0x00007fff95002800 in ProcessCacheTasks(__CFURLCache*, bool) () #6 0x00007fff95002232 in _CFURLCacheTimerCallback(void*) () #7 0x00007fff94e238ba in _dispatch_call_block_and_release () #8 0x00007fff94e2510a in _dispatch_queue_drain () #9 0x00007fff94e24f66 in _dispatch_queue_invoke () #10 0x00007fff94e24760 in _dispatch_worker_thread2 () #11 0x00007fff8f3b63da in _pthread_wqthread () #12 0x00007fff8f3b7b85 in start_wqthread ()
I mention this thread, as I saw in another question here, that a similar crash was related to NSURLCache. I do not directly call any methods in NSURLCache, but I use the sqlite database, which is also mentioned in the stream above.
Has anyone seen this before or has no idea where to look for a solution?