I tried heaptrack out in Mudlet (https://github.com/mudlet/mudlet) but it never loads past the splashscreen. It runs fine in Valgrind though.
Can you try to debug this and see what happens? I.e. attach a debugger when it hangs and get me a full backtrace for all threads? Otherwise, can you add information for me to reproduce this issue? Do I just run mudlet? Do I need some parameters or input files?
Just running Mudlet is enough. Heaptracks backtrace is not that interesting: 1 wait4 syscall-template.S 78 0x7fbfefa7d76a 2 ?? 0x560fe3ef58a0 3 ?? 0x560fe3ef709d 4 ?? 0x560fe3ef16d8 5 ?? 0x560fe3ef049e 6 ?? 0x560fe3ef049e 7 ?? 0x560fe3ef049e 8 ?? 0x560fe3ef766e 9 ?? 0x560fe3eee9de 10 __libc_start_main libc-start.c 310 0x7fbfef9bab97 11 ?? 0x560fe3eeea4a
Mudlets backtrace is the following: 1 __lll_lock_wait lowlevellock.S 135 0x7fdd7848d10d 2 __GI___pthread_mutex_lock pthread_mutex_lock.c 78 0x7fdd78486023 3 heaptrack_free 0x7fdd7bb02313 4 free 0x7fdd7bb00e06 5 debug_free(void *, const char *, int) 0x4e21b5 6 operator delete(void *) 0x4e225f 7 QObject::~QObject() 0x7fdd78be7858 8 ?? 0x7fdd58267074 9 QObjectPrivate::deleteChildren() 0x7fdd78bde19b 10 QObject::~QObject() 0x7fdd78be79cb 11 ?? 0x7fdd58277e79 12 ?? 0x7fdd5825714b 13 QNetworkConfigurationManagerPrivate::updateConfigurations() 0x7fdd7933143a 14 QNetworkConfigurationManagerPrivate::initialize() 0x7fdd79331dae 15 qNetworkConfigurationManagerPrivate() 0x7fdd7932bfdd 16 QNetworkConfigurationManager::QNetworkConfigurationManager(QObject *) 0x7fdd7932c077 17 QNetworkAccessManager::QNetworkAccessManager(QObject *) 0x7fdd792ba096 18 cTelnet::cTelnet(Host *) 0x582f6b 19 Host::Host(int, QString const&, QString const&, QString const&, int) 0x69c520 20 HostManager::addHost(QString, QString, QString, QString) 0x6ad33e ... <More> It looks like a deadlock.
Yes, attach to mudlet and then get the output for the following GDB command: thread apply all bt Please paste that here then
(gdb) attach 19809 Attaching to process 19809 [New LWP 19812] [New LWP 19813] [New LWP 19815] [New LWP 19816] [New LWP 19817] [New LWP 19818] [Thread debugging using libthread_db enabled] Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1". syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38 38 ../sysdeps/unix/sysv/linux/x86_64/syscall.S: No such file or directory. (gdb) thread apply all bt Thread 7 (Thread 0x7ffa18b74700 (LWP 19818)): #0 0x00007ffa322b8afd in __lll_lock_wait () at ../sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:135 #1 0x00007ffa322b119d in __GI___pthread_mutex_lock (mutex=0x7ffa35f77440 <(anonymous namespace)::HeapTrack::s_lock>) at ../nptl/pthread_mutex_lock.c:80 #2 0x00007ffa35d6d313 in heaptrack_free () at /tmp/.mount_heaptrwI0A5y/opt/lib/heaptrack/libheaptrack_preload.so #3 0x00007ffa35d6be06 in free () at /tmp/.mount_heaptrwI0A5y/opt/lib/heaptrack/libheaptrack_preload.so #4 0x00000000004ee3ae in debug_free(void*, char const*, int) (p=0x2d3e540, file=0xa3fe67 "unknown", line=0) at ../3rdparty/edbee-lib/edbee-lib/edbee/util/mem/debug_new.cpp:67 #5 0x00000000004ee47e in operator delete(void*) (p=0x2d3e540) at ../3rdparty/edbee-lib/edbee-lib/edbee/util/mem/debug_new.cpp:90 #6 0x00007ffa329cd299 in () at /home/vadi/Programs/Qt/5.9.3/gcc_64/lib/libQt5Core.so.5 #7 0x00007ffa329c8989 in QMetaType::destroy(int, void*) () at /home/vadi/Programs/Qt/5.9.3/gcc_64/lib/libQt5Core.so.5 #8 0x00007ffa329dbe39 in QMetaCallEvent::~QMetaCallEvent() () at /home/vadi/Programs/Qt/5.9.3/gcc_64/lib/libQt5Core.so.5 #9 0x00007ffa329dbeb9 in QMetaCallEvent::~QMetaCallEvent() () at /home/vadi/Programs/Qt/5.9.3/gcc_64/lib/libQt5Core.so.5 #10 0x00007ffa329b6687 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () at /home/vadi/Programs/Qt/5.9.3/gcc_64/lib/libQt5Core.so.5 #11 0x00007ffa32a07d13 in () at /home/vadi/Programs/Qt/5.9.3/gcc_64/lib/libQt5Core.so.5 #12 0x00007ffa30a97fb7 in g_main_context_dispatch () at /lib/x86_64-linux-gnu/libglib-2.0.so.0 #13 0x00007ffa30a981f0 in () at /lib/x86_64-linux-gnu/libglib-2.0.so.0 #14 0x00007ffa30a9827c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0 #15 0x00007ffa32a0736f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /home/vadi/Programs/Qt/5.9.3/gcc_64/lib/libQt5Core.so.5 #16 0x00007ffa329b205a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /home/vadi/Programs/Qt/5.9.3/gcc_64/lib/libQt5Core.so.5 #17 0x00007ffa327ddf9b in QThread::exec() () at /home/vadi/Programs/Qt/5.9.3/gcc_64/lib/libQt5Core.so.5 #18 0x00007ffa27d495e5 in () at /home/vadi/Programs/Qt/5.9.3/gcc_64/plugins/platforms/../../lib/libQt5DBus.so.5 #19 0x00007ffa327e2c3a in () at /home/vadi/Programs/Qt/5.9.3/gcc_64/lib/libQt5Core.so.5 #20 0x00007ffa322ae7fc in start_thread (arg=0x7ffa18b74700) at pthread_create.c:465 #21 0x00007ffa316e8b5f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 Thread 6 (Thread 0x7ffa1a647700 (LWP 19817)): #0 0x00007ffa316dc951 in __GI___poll (fds=0x7ffa14039ad0, nfds=2, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29 #1 0x00007ffa30a98169 in () at /lib/x86_64-linux-gnu/libglib-2.0.so.0 #2 0x00007ffa30a98502 in g_main_loop_run () at /lib/x86_64-linux-gnu/libglib-2.0.so.0 #3 0x00007ffa25763b26 in () at /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0 #4 0x00007ffa30abf645 in () at /lib/x86_64-linux-gnu/libglib-2.0.so.0 #5 0x00007ffa322ae7fc in start_thread (arg=0x7ffa1a647700) at pthread_create.c:465 ---Type <return> to continue, or q <return> to quit--- #6 0x00007ffa316e8b5f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 Thread 5 (Thread 0x7ffa1ae48700 (LWP 19816)): #0 0x00007ffa316dc951 in __GI___poll (fds=0x7ffa14009720, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29 #1 0x00007ffa30a98169 in () at /lib/x86_64-linux-gnu/libglib-2.0.so.0 #2 0x00007ffa30a9827c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0 #3 0x00007ffa30a982c1 in () at /lib/x86_64-linux-gnu/libglib-2.0.so.0 #4 0x00007ffa30abf645 in () at /lib/x86_64-linux-gnu/libglib-2.0.so.0 #5 0x00007ffa322ae7fc in start_thread (arg=0x7ffa1ae48700) at pthread_create.c:465 #6 0x00007ffa316e8b5f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 Thread 4 (Thread 0x7ffa1b649700 (LWP 19815)): #0 0x00007ffa316dc951 in __GI___poll (fds=0x21baba0, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29 #1 0x00007ffa30a98169 in () at /lib/x86_64-linux-gnu/libglib-2.0.so.0 #2 0x00007ffa30a9827c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0 #3 0x00007ffa1b65146d in () at /usr/lib/x86_64-linux-gnu/gio/modules/libdconfsettings.so #4 0x00007ffa30abf645 in () at /lib/x86_64-linux-gnu/libglib-2.0.so.0 #5 0x00007ffa322ae7fc in start_thread (arg=0x7ffa1b649700) at pthread_create.c:465 #6 0x00007ffa316e8b5f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 Thread 3 (Thread 0x7ffa278f0700 (LWP 19813)): #0 0x00007ffa322b8afd in __lll_lock_wait () at ../sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:135 #1 0x00007ffa322b119d in __GI___pthread_mutex_lock (mutex=0x7ffa35f77440 <(anonymous namespace)::HeapTrack::s_lock>) at ../nptl/pthread_mutex_lock.c:80 #2 0x00007ffa35d6eece in heaptrack_malloc () at /tmp/.mount_heaptrwI0A5y/opt/lib/heaptrack/libheaptrack_preload.so #3 0x00007ffa35d6bd98 in malloc () at /tmp/.mount_heaptrwI0A5y/opt/lib/heaptrack/libheaptrack_preload.so #4 0x00007ffa2cc3ce2c in () at /usr/lib/x86_64-linux-gnu/libxcb.so.1 #5 0x00007ffa2cc3aa08 in () at /usr/lib/x86_64-linux-gnu/libxcb.so.1 #6 0x00007ffa2cc3c53a in xcb_wait_for_event () at /usr/lib/x86_64-linux-gnu/libxcb.so.1 #7 0x00007ffa284ee709 in () at /home/vadi/Programs/Qt/5.9.3/gcc_64/plugins/platforms/../../lib/libQt5XcbQpa.so.5 #8 0x00007ffa327e2c3a in () at /home/vadi/Programs/Qt/5.9.3/gcc_64/lib/libQt5Core.so.5 #9 0x00007ffa322ae7fc in start_thread (arg=0x7ffa278f0700) at pthread_create.c:465 #10 0x00007ffa316e8b5f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 ---Type <return> to continue, or q <return> to quit--- Thread 2 (Thread 0x7ffa294ea700 (LWP 19812)): #0 0x00007ffa322b95f8 in __GI___nanosleep (requested_time=0x7ffa294e9cd0, remaining=0x0) at ../sysdeps/unix/sysv/linux/nanosleep.c:27 #1 0x00007ffa35d6ce88 in std::thread::_Impl<std::_Bind_simple<(anonymous namespace)::HeapTrack::LockedData::LockedData(int, void (*)())::{lambda()#1} ()> >::_M_run() () at /tmp/.mount_heaptrwI0A5y/opt/lib/heaptrack/libheaptrack_preload.so #2 0x00007ffa31fdd4a0 in () at /usr/lib/x86_64-linux-gnu/libstdc++.so.6 #3 0x00007ffa322ae7fc in start_thread (arg=0x7ffa294ea700) at pthread_create.c:465 #4 0x00007ffa316e8b5f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 Thread 1 (Thread 0x7ffa36146dc0 (LWP 19809)): #0 0x00007ffa316e2a49 in syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38 #1 0x00007ffa327da065 in QBasicMutex::lockInternal() () at /home/vadi/Programs/Qt/5.9.3/gcc_64/lib/libQt5Core.so.5 #2 0x00007ffa327da10a in QMutex::lock() () at /home/vadi/Programs/Qt/5.9.3/gcc_64/lib/libQt5Core.so.5 #3 0x00000000004ee5fb in QMutexLocker::QMutexLocker(QBasicMutex*) (this=0x7fffcfa3d9c8, m=0x2091b30) at ../../../Qt/5.9.3/gcc_64/include/QtCore/qmutex.h:200 #4 0x00000000004ee2f1 in debug_free(void*, char const*, int) (p=0x2d706b0, file=0xa3fe67 "unknown", line=0) at ../3rdparty/edbee-lib/edbee-lib/edbee/util/mem/debug_new.cpp:57 #5 0x00000000004ee47e in operator delete(void*) (p=0x2d706b0) at ../3rdparty/edbee-lib/edbee-lib/edbee/util/mem/debug_new.cpp:90 #6 0x00007ffa35d7113d in void std::vector<TraceEdge, std::allocator<TraceEdge> >::_M_insert_aux<TraceEdge>(__gnu_cxx::__normal_iterator<TraceEdge*, std::vector<TraceEdge, std::allocator<TraceEdge> > >, TraceEdge&&) () at /tmp/.mount_heaptrwI0A5y/opt/lib/heaptrack/libheaptrack_preload.so #7 0x00007ffa35d6f151 in heaptrack_malloc () at /tmp/.mount_heaptrwI0A5y/opt/lib/heaptrack/libheaptrack_preload.so #8 0x00007ffa35d6bd98 in malloc () at /tmp/.mount_heaptrwI0A5y/opt/lib/heaptrack/libheaptrack_preload.so #9 0x00007ffa327e3d9d in QArrayData::allocate(unsigned long, unsigned long, unsigned long, QFlags<QArrayData::AllocationOption>) () at /home/vadi/Programs/Qt/5.9.3/gcc_64/lib/libQt5Core.so.5 #10 0x00007ffa3285631d in QString::reallocData(unsigned int, bool) () at /home/vadi/Programs/Qt/5.9.3/gcc_64/lib/libQt5Core.so.5 #11 0x00007ffa3285729f in () at /home/vadi/Programs/Qt/5.9.3/gcc_64/lib/libQt5Core.so.5 #12 0x00007ffa3285beea in QString::toLower_helper(QString const&) () at /home/vadi/Programs/Qt/5.9.3/gcc_64/lib/libQt5Core.so.5 #13 0x00007ffa3352eabc in () at /home/vadi/Programs/Qt/5.9.3/gcc_64/lib/libQt5Gui.so.5 #14 0x00007ffa33530195 in QKeySequence::assign(QString const&, QKeySequence::SequenceFormat) () at /home/vadi/Programs/Qt/5.9.3/gcc_64/lib/libQt5Gui.so.5 #15 0x000000000080b28a in Ui_main_window::retranslateUi(QMainWindow*) (this=0x2cdfe10, main_window=0x2cdfde0) at ./ui_main_window.h:214 #16 0x000000000080518a in Ui_main_window::setupUi(QMainWindow*) (this=0x2cdfe10, main_window=0x2cdfde0) at ./ui_main_window.h:194 #17 0x00000000007de02b in mudlet::mudlet() (this=0x2cdfde0) at ../src/mudlet.cpp:172 #18 0x00000000007dd8aa in mudlet::start() () at ../src/mudlet.cpp:131 #19 0x00000000007dcfc4 in main(int, char**) (argc=1, argv=0x7fffcfa41da8) at ../src/main.cpp:590 (gdb)
ugh, looks like it's an issue when using heaptrack with your custom debug_free/new - can you disable that while using heaptrack for now? I'll have to figure out how to prevent the lock order violation... Probably needs a custom allocator, which I wanted to implement anyways for some time now...
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This bug has been in NEEDSINFO status with no change for at least 30 days. The bug is now closed as RESOLVED > WORKSFORME due to lack of needed information. For more information about our bug triaging procedures please read the wiki located here: https://community.kde.org/Guidelines_and_HOWTOs/Bug_triaging Thank you for helping us make KDE software even better for everyone!