[mythtv-commits] Ticket #4651: UPnP mutex crash

[MythTV]

#4651: UPnP mutex crash
--------------------+-------------------------------------------------------
 Reporter:  nigel   |       Owner:  dblain 
     Type:  defect  |      Status:  new    
 Priority:  minor   |   Milestone:  unknown
Component:  upnp    |     Version:  head   
 Severity:  medium  |     Mlocked:  0      
--------------------+-------------------------------------------------------
 While OS X mythfrontend is waiting in a database schema popup:
 {{{
 Date/Time:      2008-02-13 16:14:11.820 +1100
 OS Version:     10.4.11 (Build 8S2167)
 Report Version: 4

 Command: MythFrontend
 Path:    MythFrontend.app/Contents/MacOS/MythFrontend
 Parent:  sh [23541]

 Version: 1.0 (1.0)

 PID:    28060
 Thread: 2

 Exception:  EXC_BAD_ACCESS (0x0001)
 Codes:      KERN_PROTECTION_FAILURE (0x0002) at 0x00000007

 Thread 0:
 0   libSystem.B.dylib                   0x90009cd7 mach_msg_trap + 7
 1   com.apple.CoreFoundation            0x9082d23b CFRunLoopRunSpecific +
 2014
 2   com.apple.CoreFoundation            0x9082ca56 CFRunLoopRunInMode + 61
 3   qt-mt                               0xb202b0df
 QEventLoop::processEvents(unsigned) + 607
 4   qt-mt                               0xb204795b QEventLoop::enterLoop()
 + 67
 5   myth                                0xc607b331 MythDialog::exec() +
 139 (mythdialogs.cpp:192)
 6   myth                                0xc6083988
 MythPopupBox::ExecPopup(QObject*, char const*) + 84 (mythdialogs.cpp:554)
 7   myth                                0xc6086445
 MythPopupBox::ShowButtonPopup(MythMainWindow*, QString const&, QString
 const&, QStringList const&, DialogCode) + 521 (mythdialogs.cpp:762)
 8   myth                                0xc606c3df
 MythContext::PromptForSchemaUpgrade(QString const&, QString const&,
 QString const&) + 4783 (mythcontext.cpp:3614)
 9   mythtv                              0xc9079c32
 UpgradeTVDatabaseSchema() + 2466

 Thread 1:
 0   libSystem.B.dylib                   0x90047dd7
 semaphore_timedwait_signal_trap + 7
 1   qt-mt                               0xb22a98a4
 QWaitCondition::wait(QMutex*, unsigned long) + 242
 2   mythupnp                            0x0243ea09
 CEvent::WaitForEvent(unsigned long) + 85 (threadpool.cpp:96)
 3   mythupnp                            0x0244044f WorkerThread::run() +
 181 (threadpool.cpp:202)
 4   qt-mt                               0xb203110f
 QThreadInstance::start(void*) + 111
 5   libSystem.B.dylib                   0x90024227 _pthread_body + 84

 Thread 2 Crashed:
 0   qt-mt                               0xb22a86a9 QMutex::lock() + 9
 1   mythupnp                            0x02475bb4 RefCounted::AddRef() +
 20 (refcounted.h:50)
 2   mythupnp                            0x024688ab
 SSDPCacheEntries::RemoveStale(timeval const&) + 99 (ssdpcache.cpp:160)
 3   mythupnp                            0x02468a87
 SSDPCache::RemoveStale() + 135 (ssdpcache.cpp:395)
 4   mythupnp                            0x024755ab
 SSDPCacheTask::Execute(TaskQueue*) + 45 (upnptaskcache.h:53)
 5   mythupnp                            0x02434487 TaskQueue::run() + 109
 (taskqueue.cpp:104)
 6   qt-mt                               0xb203110f
 QThreadInstance::start(void*) + 111
 7   libSystem.B.dylib                   0x90024227 _pthread_body + 84

 Thread 3:
 0   libSystem.B.dylib                   0x9001a1cc select + 12
 1   qt-mt                               0xb203110f
 QThreadInstance::start(void*) + 111
 2   libSystem.B.dylib                   0x90024227 _pthread_body + 84

 Thread 4:
 0   libSystem.B.dylib                   0x90009cd7 mach_msg_trap + 7
 1   com.apple.CoreFoundation            0x9082d23b CFRunLoopRunSpecific +
 2014
 2   com.apple.CoreFoundation            0x9083e118 CFRunLoopRun + 60
 3   mythui                              0x029f9afb SpawnAppleRemote(void*)
 + 159 (mythmainwindow.cpp:97)
 4   libSystem.B.dylib                   0x90024227 _pthread_body + 84

 Thread 5:
 0   libSystem.B.dylib                   0x900248c7
 semaphore_wait_signal_trap + 7
 1   qt-mt                               0xb22a98be
 QWaitCondition::wait(QMutex*, unsigned long) + 268
 2   myth                                0xc604fbf6
 MythContext::waitPrivRequest() const + 70 (mythcontext.cpp:3892)
 3   org.osx-bundler.MythFrontend        0x0000b190 run_priv_thread(void*)
 + 756 (main.cpp:857)
 4   libSystem.B.dylib                   0x90024227 _pthread_body + 84
 }}}

 Suspect something not threadsafe in UPnP

-- 
Ticket URL: <http://svn.mythtv.org/trac/ticket/4651>
MythTV <http://svn.mythtv.org/trac>
MythTV