Application: kmail (5.2.3) Qt Version: 5.6.1 Frameworks Version: 5.26.0 Operating System: Linux 4.8.0-30-generic x86_64 Distribution: Ubuntu 16.10 -- Information about the crash: - What I was doing when the application crashed: I closed the main window of KMail. After the window closed, the crash reporting assistant appeared, indicating that the program has caused a segmentation fault. This is not the first time this crash has happened. So far I didn't notice any data loss or other adverse effects. However, it does not happen every time I close the program. The crash reporter could not find debugging symbol packages for all involved libraries. I would be happy to install them manually if that is useful for future crashes. The crash can be reproduced sometimes. -- Backtrace: Application: KMail (kmail), signal: Segmentation fault Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1". [Current thread is 1 (Thread 0x7f13525f1940 (LWP 26061))] Thread 7 (Thread 0x7f12cbfff700 (LWP 26095)): #0 pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185 #1 0x00007f13645c9da3 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebKit.so.5 #2 0x00007f13648ea591 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebKit.so.5 #3 0x00007f13697426ca in start_thread (arg=0x7f12cbfff700) at pthread_create.c:333 #4 0x00007f1372a4e0af in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105 Thread 6 (Thread 0x7f12d8a1d700 (LWP 26094)): #0 pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185 #1 0x00007f13645c8d74 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebKit.so.5 #2 0x00007f13648ea591 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebKit.so.5 #3 0x00007f13697426ca in start_thread (arg=0x7f12d8a1d700) at pthread_create.c:333 #4 0x00007f1372a4e0af in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105 Thread 5 (Thread 0x7f1321824700 (LWP 26085)): #0 pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185 #1 0x00007f132dc224d3 in ?? () from /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so #2 0x00007f132dc21c17 in ?? () from /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so #3 0x00007f13697426ca in start_thread (arg=0x7f1321824700) at pthread_create.c:333 #4 0x00007f1372a4e0af in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105 Thread 4 (Thread 0x7f132eb8f700 (LWP 26083)): #0 pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185 #1 0x00007f13648ba96b in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebKit.so.5 #2 0x00007f13648ba9a9 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebKit.so.5 #3 0x00007f13697426ca in start_thread (arg=0x7f132eb8f700) at pthread_create.c:333 #4 0x00007f1372a4e0af in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105 Thread 3 (Thread 0x7f134f087700 (LWP 26065)): #0 0x00007f1373351d99 in std::__atomic_base<QMutexData*>::compare_exchange_strong (__m2=<optimized out>, __m1=std::memory_order_release, __p2=0x0, __p1=@0x7f134f0869f8: 0x1, this=0x55726cd33868) at /usr/include/c++/6/bits/atomic_base.h:752 #1 std::atomic<QMutexData*>::compare_exchange_strong (__m=std::memory_order_release, __p2=0x0, __p1=@0x7f134f0869f8: 0x1, this=0x55726cd33868) at /usr/include/c++/6/atomic:475 #2 QAtomicOps<QMutexData*>::testAndSetRelease<QMutexData*> (currentValue=<synthetic pointer>, newValue=0x0, expectedValue=0x1, _q_value=...) at ../../include/QtCore/../../src/corelib/arch/qatomic_cxx11.h:167 #3 QBasicAtomicPointer<QMutexData>::testAndSetRelease (currentValue=<synthetic pointer>: <optimized out>, newValue=0x0, expectedValue=<optimized out>, this=0x55726cd33868) at ../../include/QtCore/../../src/corelib/thread/qbasicatomic.h:278 #4 QBasicMutex::fastTryUnlock (current=<synthetic pointer>: <optimized out>, this=0x55726cd33868) at thread/qmutex.h:85 #5 QMutex::unlock (this=this@entry=0x55726cd33868) at thread/qmutex.cpp:271 #6 0x00007f1373586b51 in QMutexLocker::unlock (this=<synthetic pointer>) at ../../include/QtCore/../../src/corelib/thread/qmutex.h:138 #7 QMutexLocker::~QMutexLocker (this=<synthetic pointer>, __in_chrg=<optimized out>) at ../../include/QtCore/../../src/corelib/thread/qmutex.h:132 #8 QThreadData::canWaitLocked (this=0x55726cd33840) at ../../include/QtCore/5.6.1/QtCore/private/../../../../../src/corelib/thread/qthread_p.h:246 #9 postEventSourcePrepare (s=0x7f13400012d0, timeout=0x7f134f086a84) at kernel/qeventdispatcher_glib.cpp:253 #10 0x00007f136921eed9 in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #11 0x00007f136921f8fb in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #12 0x00007f136921faec in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #13 0x00007f13735874ab in QEventDispatcherGlib::processEvents (this=0x7f13400008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:419 #14 0x00007f137352f0fa in QEventLoop::exec (this=this@entry=0x7f134f086c50, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204 #15 0x00007f1373354d43 in QThread::exec (this=this@entry=0x7f13754e7d60 <(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at thread/qthread.cpp:500 #16 0x00007f1375473575 in QDBusConnectionManager::run (this=0x7f13754e7d60 <(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at qdbusconnection.cpp:171 #17 0x00007f1373359c68 in QThreadPrivate::start (arg=0x7f13754e7d60 <(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at thread/qthread_unix.cpp:341 #18 0x00007f13697426ca in start_thread (arg=0x7f134f087700) at pthread_create.c:333 #19 0x00007f1372a4e0af in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105 Thread 2 (Thread 0x7f1350164700 (LWP 26063)): #0 0x00007f1372a420bd in poll () at ../sysdeps/unix/syscall-template.S:84 #1 0x00007f1366627c62 in ?? () from /usr/lib/x86_64-linux-gnu/libxcb.so.1 #2 0x00007f13666298d7 in xcb_wait_for_event () from /usr/lib/x86_64-linux-gnu/libxcb.so.1 #3 0x00007f1352094299 in QXcbEventReader::run (this=0x55726ccfd620) at qxcbconnection.cpp:1325 #4 0x00007f1373359c68 in QThreadPrivate::start (arg=0x55726ccfd620) at thread/qthread_unix.cpp:341 #5 0x00007f13697426ca in start_thread (arg=0x7f1350164700) at pthread_create.c:333 #6 0x00007f1372a4e0af in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105 Thread 1 (Thread 0x7f13525f1940 (LWP 26061)): [KCrash Handler] #6 0x00007f136b1455df in QExplicitlySharedDataPointer<QNetworkConfigurationPrivate>::~QExplicitlySharedDataPointer (this=0x55726e7abe30, __in_chrg=<optimized out>) at ../../include/QtCore/../../src/corelib/tools/qshareddata.h:159 #7 QNetworkConfiguration::~QNetworkConfiguration (this=0x55726e7abe30, __in_chrg=<optimized out>) at bearer/qnetworkconfiguration.cpp:297 #8 0x00007f13733ba019 in QHashData::free_helper (this=0x55726e7cd920, node_delete=0x7f136b158090 <QHash<QNetworkConfiguration, QWeakPointer<QNetworkSession> >::deleteNode2(QHashData::Node*)>) at tools/qhash.cpp:538 #9 0x00007f136b15806f in QHash<QNetworkConfiguration, QWeakPointer<QNetworkSession> >::freeData (this=0x55726e3a1d70, x=<optimized out>) at ../../include/QtCore/../../src/corelib/tools/qhash.h:555 #10 QHash<QNetworkConfiguration, QWeakPointer<QNetworkSession> >::~QHash (this=0x55726e3a1d70, __in_chrg=<optimized out>) at ../../include/QtCore/../../src/corelib/tools/qhash.h:246 #11 QSharedNetworkSessionManager::~QSharedNetworkSessionManager (this=0x55726e3a1d70, __in_chrg=<optimized out>) at bearer/qsharednetworksession_p.h:61 #12 qThreadStorage_deleteData<QSharedNetworkSessionManager> (d=0x55726e3a1d70) at ../../include/QtCore/../../src/corelib/thread/qthreadstorage.h:86 #13 QThreadStorage<QSharedNetworkSessionManager*>::deleteData (x=0x55726e3a1d70) at ../../include/QtCore/../../src/corelib/thread/qthreadstorage.h:129 #14 0x00007f1373357ed3 in QThreadStorageData::finish (p=0x55726ccd9d28) at thread/qthreadstorage.cpp:195 #15 0x00007f1373530a2c in QCoreApplicationPrivate::cleanupThreadData (this=this@entry=0x55726ccddd80) at kernel/qcoreapplication.cpp:487 #16 0x00007f137387a84b in QGuiApplicationPrivate::~QGuiApplicationPrivate (this=0x55726ccddd80, __in_chrg=<optimized out>) at kernel/qguiapplication.cpp:1444 #17 0x00007f137434b869 in QApplicationPrivate::~QApplicationPrivate (this=0x55726ccddd80, __in_chrg=<optimized out>) at kernel/qapplication.cpp:192 #18 0x00007f13735662c7 in QScopedPointerDeleter<QObjectData>::cleanup (pointer=<optimized out>) at ../../include/QtCore/../../src/corelib/tools/qscopedpointer.h:54 #19 QScopedPointer<QObjectData, QScopedPointerDeleter<QObjectData> >::~QScopedPointer (this=0x7ffe0214d558, __in_chrg=<optimized out>) at ../../include/QtCore/../../src/corelib/tools/qscopedpointer.h:101 #20 QObject::~QObject (this=<optimized out>, __in_chrg=<optimized out>) at kernel/qobject.cpp:893 #21 0x00007f1373532ec6 in QCoreApplication::~QCoreApplication (this=0x7ffe0214d550, __in_chrg=<optimized out>) at kernel/qcoreapplication.cpp:848 #22 0x00007f137434d331 in QApplication::~QApplication (this=0x7ffe0214d550, __in_chrg=<optimized out>) at kernel/qapplication.cpp:820 #23 0x000055726c3797db in ?? () #24 0x00007f13729663f1 in __libc_start_main (main=0x55726c3787e0, argc=3, argv=0x7ffe0214d788, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffe0214d778) at ../csu/libc-start.c:291 #25 0x000055726c379f9a in _start () Reported using DrKonqi
I could reproduce the crash and have a backtrace with more debug symbols installed. Somehow the feature of DrKonqi to add to an existing report is broken, so I'm doing it manually. -- Backtrace: Application: KMail (kmail), signal: Segmentation fault Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1". [Current thread is 1 (Thread 0x7f564d8d0940 (LWP 6827))] Thread 7 (Thread 0x7f55c73ef700 (LWP 6905)): #0 0x00007f5664a274d0 in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185 #1 0x00007f565f8a8da3 in JSC::GCThread::gcThreadMain() (this=0x55cc152d3ce0) at heap/GCThread.cpp:81 #2 0x00007f565fbc9591 in WTF::wtfThreadEntryPoint(void*) (ptr=0x7f562952b140) at wtf/ThreadingPthreads.cpp:195 #3 0x00007f5664a216ca in start_thread (arg=0x7f55c73ef700) at pthread_create.c:333 #4 0x00007f566dd2d0af in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105 Thread 6 (Thread 0x7f55c7bf0700 (LWP 6904)): #0 0x00007f5664a274d0 in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185 #1 0x00007f565f8a7d74 in JSC::BlockAllocator::blockFreeingThreadMain() (this=0x7f5629582058) at heap/BlockAllocator.cpp:139 #2 0x00007f565fbc9591 in WTF::wtfThreadEntryPoint(void*) (ptr=0x7f562952b1b0) at wtf/ThreadingPthreads.cpp:195 #3 0x00007f5664a216ca in start_thread (arg=0x7f55c7bf0700) at pthread_create.c:333 #4 0x00007f566dd2d0af in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105 Thread 5 (Thread 0x7f561cf96700 (LWP 6887)): #0 0x00007f5664a274d0 in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185 #1 0x00007f5628eb94d3 in () at /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so #2 0x00007f5628eb8c17 in () at /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so #3 0x00007f5664a216ca in start_thread (arg=0x7f561cf96700) at pthread_create.c:333 #4 0x00007f566dd2d0af in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105 Thread 4 (Thread 0x7f5629e26700 (LWP 6883)): #0 0x00007f5664a274d0 in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185 #1 0x00007f565fb9996b in WTF::TCMalloc_PageHeap::scavengerThread() (this=0x7f56604388fc <WTF::pageheap_memory+57564>) at wtf/FastMalloc.cpp:2825 #2 0x00007f565fb999a9 in WTF::TCMalloc_PageHeap::runScavengerThread(void*) (context=0x7f56604388fc <WTF::pageheap_memory+57564>) at wtf/FastMalloc.cpp:1993 #3 0x00007f5664a216ca in start_thread (arg=0x7f5629e26700) at pthread_create.c:333 #4 0x00007f566dd2d0af in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105 Thread 3 (Thread 0x7f564a366700 (LWP 6849)): #0 0x00007f56644fdfa3 in g_main_context_prepare (context=context@entry=0x7f563c000990, priority=priority@entry=0x7f564a365b10) at ././glib/gmain.c:3563 #1 0x00007f56644fe8fb in g_main_context_iterate (context=context@entry=0x7f563c000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ././glib/gmain.c:3907 #2 0x00007f56644feaec in g_main_context_iteration (context=0x7f563c000990, may_block=may_block@entry=1) at ././glib/gmain.c:3988 #3 0x00007f566e8664ab in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7f563c0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:419 #4 0x00007f566e80e0fa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7f564a365c50, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204 #5 0x00007f566e633d43 in QThread::exec() (this=this@entry=0x7f56707c6d60 <(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at thread/qthread.cpp:500 #6 0x00007f5670752575 in QDBusConnectionManager::run() (this=0x7f56707c6d60 <(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at qdbusconnection.cpp:171 #7 0x00007f566e638c68 in QThreadPrivate::start(void*) (arg=0x7f56707c6d60 <(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at thread/qthread_unix.cpp:341 #8 0x00007f5664a216ca in start_thread (arg=0x7f564a366700) at pthread_create.c:333 #9 0x00007f566dd2d0af in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105 Thread 2 (Thread 0x7f564b443700 (LWP 6848)): #0 0x00007f566dd210bd in poll () at ../sysdeps/unix/syscall-template.S:84 #1 0x00007f5661906c62 in poll (__timeout=-1, __nfds=1, __fds=0x7f564b442b80) at /usr/include/x86_64-linux-gnu/bits/poll2.h:46 #2 0x00007f5661906c62 in _xcb_conn_wait (c=c@entry=0x55cc14bdc5d0, cond=cond@entry=0x55cc14bdc610, vector=vector@entry=0x0, count=count@entry=0x0) at ../../src/xcb_conn.c:459 #3 0x00007f56619088d7 in xcb_wait_for_event (c=0x55cc14bdc5d0) at ../../src/xcb_in.c:693 #4 0x00007f564d373299 in QXcbEventReader::run() (this=0x55cc14bef620) at qxcbconnection.cpp:1325 #5 0x00007f566e638c68 in QThreadPrivate::start(void*) (arg=0x55cc14bef620) at thread/qthread_unix.cpp:341 #6 0x00007f5664a216ca in start_thread (arg=0x7f564b443700) at pthread_create.c:333 #7 0x00007f566dd2d0af in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105 Thread 1 (Thread 0x7f564d8d0940 (LWP 6827)): [KCrash Handler] #6 0x00007f56664245df in QExplicitlySharedDataPointer<QNetworkConfigurationPrivate>::~QExplicitlySharedDataPointer() (this=0x55cc16115410, __in_chrg=<optimized out>) at ../../include/QtCore/../../src/corelib/tools/qshareddata.h:159 #7 0x00007f56664245df in QNetworkConfiguration::~QNetworkConfiguration() (this=0x55cc16115410, __in_chrg=<optimized out>) at bearer/qnetworkconfiguration.cpp:297 #8 0x00007f566e699019 in QHashData::free_helper(void (*)(QHashData::Node*)) (this=0x55cc1612f490, node_delete=0x7f5666437090 <QHash<QNetworkConfiguration, QWeakPointer<QNetworkSession> >::deleteNode2(QHashData::Node*)>) at tools/qhash.cpp:538 #9 0x00007f566643706f in QHash<QNetworkConfiguration, QWeakPointer<QNetworkSession> >::freeData(QHashData*) (this=0x55cc160dda30, x=<optimized out>) at ../../include/QtCore/../../src/corelib/tools/qhash.h:555 #10 0x00007f566643706f in QHash<QNetworkConfiguration, QWeakPointer<QNetworkSession> >::~QHash() (this=0x55cc160dda30, __in_chrg=<optimized out>) at ../../include/QtCore/../../src/corelib/tools/qhash.h:246 #11 0x00007f566643706f in QSharedNetworkSessionManager::~QSharedNetworkSessionManager() (this=0x55cc160dda30, __in_chrg=<optimized out>) at bearer/qsharednetworksession_p.h:61 #12 0x00007f566643706f in qThreadStorage_deleteData<QSharedNetworkSessionManager>(void*, QSharedNetworkSessionManager**) (d=0x55cc160dda30) at ../../include/QtCore/../../src/corelib/thread/qthreadstorage.h:86 #13 0x00007f566643706f in QThreadStorage<QSharedNetworkSessionManager*>::deleteData(void*) (x=0x55cc160dda30) at ../../include/QtCore/../../src/corelib/thread/qthreadstorage.h:129 #14 0x00007f566e636ed3 in QThreadStorageData::finish(void**) (p=0x55cc14bcbd28) at thread/qthreadstorage.cpp:195 #15 0x00007f566e80fa2c in QCoreApplicationPrivate::cleanupThreadData() (this=this@entry=0x55cc14bcfd80) at kernel/qcoreapplication.cpp:487 #16 0x00007f566eb5984b in QGuiApplicationPrivate::~QGuiApplicationPrivate() (this=0x55cc14bcfd80, __in_chrg=<optimized out>) at kernel/qguiapplication.cpp:1444 #17 0x00007f566f62a869 in QApplicationPrivate::~QApplicationPrivate() (this=0x55cc14bcfd80, __in_chrg=<optimized out>) at kernel/qapplication.cpp:192 #18 0x00007f566e8452c7 in QScopedPointerDeleter<QObjectData>::cleanup(QObjectData*) (pointer=<optimized out>) at ../../include/QtCore/../../src/corelib/tools/qscopedpointer.h:54 #19 0x00007f566e8452c7 in QScopedPointer<QObjectData, QScopedPointerDeleter<QObjectData> >::~QScopedPointer() (this=0x7ffdfd3cbce8, __in_chrg=<optimized out>) at ../../include/QtCore/../../src/corelib/tools/qscopedpointer.h:101 #20 0x00007f566e8452c7 in QObject::~QObject() (this=<optimized out>, __in_chrg=<optimized out>) at kernel/qobject.cpp:893 #21 0x00007f566e811ec6 in QCoreApplication::~QCoreApplication() (this=0x7ffdfd3cbce0, __in_chrg=<optimized out>) at kernel/qcoreapplication.cpp:848 #22 0x00007f566f62c331 in QApplication::~QApplication() (this=0x7ffdfd3cbce0, __in_chrg=<optimized out>) at kernel/qapplication.cpp:820 #23 0x000055cc132b27db in () #24 0x00007f566dc453f1 in __libc_start_main (main=0x55cc132b17e0, argc=3, argv=0x7ffdfd3cbf18, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffdfd3cbf08) at ../csu/libc-start.c:291 #25 0x000055cc132b2f9a in _start ()
*** This bug has been marked as a duplicate of bug 371557 ***