(gdb) thread apply all backtrace

Thread 15 (Thread 0x7ffd9cb93700 (LWP 28263)):
#0  0x00007ffe155b4ea1 in QDateTime::QDateTime() () from /usr/local/qt-4.8.4-git/lib/libQtCore.so.4
#1  0x00007ffe155b5d10 in QDateTime::currentDateTime() () from /usr/local/qt-4.8.4-git/lib/libQtCore.so.4
#2  0x00007ffe15a6b5f7 in ?? () from /usr/local/qt-4.8.4-git/lib/libQtNetwork.so.4
#3  0x00007ffe156b5a5c in QObject::event(QEvent*) () from /usr/local/qt-4.8.4-git/lib/libQtCore.so.4
#4  0x00007ffe15f38c9c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/local/qt-4.8.4-git/lib/libQtGui.so.4
#5  0x00007ffe15f3cd3a in QApplication::notify(QObject*, QEvent*) () from /usr/local/qt-4.8.4-git/lib/libQtGui.so.4
#6  0x00007ffe156a1f5e in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/local/qt-4.8.4-git/lib/libQtCore.so.4
#7  0x00007ffe156d1b92 in ?? () from /usr/local/qt-4.8.4-git/lib/libQtCore.so.4
#8  0x00007ffe156cecb4 in ?? () from /usr/local/qt-4.8.4-git/lib/libQtCore.so.4
#9  0x00007ffe156cecd1 in ?? () from /usr/local/qt-4.8.4-git/lib/libQtCore.so.4
#10 0x00007ffe13061ab5 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#11 0x00007ffe13061de8 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#12 0x00007ffe13061ea4 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#13 0x00007ffe156cf326 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/local/qt-4.8.4-git/lib/libQtCore.so.4
#14 0x00007ffe156a0c8f in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/local/qt-4.8.4-git/lib/libQtCore.so.4
#15 0x00007ffe156a0f18 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/local/qt-4.8.4-git/lib/libQtCore.so.4
#16 0x00007ffe155a4040 in QThread::exec() () from /usr/local/qt-4.8.4-git/lib/libQtCore.so.4
#17 0x00007ffe155a701c in ?? () from /usr/local/qt-4.8.4-git/lib/libQtCore.so.4
#18 0x00007ffe15306e9a in start_thread (arg=0x7ffd9cb93700) at pthread_create.c:308
#19 0x00007ffe1481ecbd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#20 0x0000000000000000 in ?? ()

Thread 14 (Thread 0x7ffd9f17e700 (LWP 27846)):
#0  0x00007ffe14813303 in __GI___poll (fds=<optimized out>, nfds=<optimized out>, timeout=<optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007ffe13061d84 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007ffe13061ea4 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007ffe156cf326 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/local/qt-4.8.4-git/lib/libQtCore.so.4
#4  0x00007ffe156a0c8f in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/local/qt-4.8.4-git/lib/libQtCore.so.4
#5  0x00007ffe156a0f18 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/local/qt-4.8.4-git/lib/libQtCore.so.4
#6  0x00007ffe155a4040 in QThread::exec() () from /usr/local/qt-4.8.4-git/lib/libQtCore.so.4
#7  0x00007ffe155a701c in ?? () from /usr/local/qt-4.8.4-git/lib/libQtCore.so.4
#8  0x00007ffe15306e9a in start_thread (arg=0x7ffd9f17e700) at pthread_create.c:308
#9  0x00007ffe1481ecbd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#10 0x0000000000000000 in ?? ()

Thread 13 (Thread 0x7ffd8ffff700 (LWP 28266)):
#0  0x00007ffe14813303 in __GI___poll (fds=<optimized out>, nfds=<optimized out>, timeout=<optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007ffe13061d84 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007ffe13061ea4 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007ffe156cf346 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/local/qt-4.8.4-git/lib/libQtCore.so.4
#4  0x00007ffe156a0c8f in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/local/qt-4.8.4-git/lib/libQtCore.so.4
#5  0x00007ffe156a0f18 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/local/qt-4.8.4-git/lib/libQtCore.so.4
#6  0x00007ffe155a4040 in QThread::exec() () from /usr/local/qt-4.8.4-git/lib/libQtCore.so.4
#7  0x00007ffe155a701c in ?? () from /usr/local/qt-4.8.4-git/lib/libQtCore.so.4
#8  0x00007ffe15306e9a in start_thread (arg=0x7ffd8ffff700) at pthread_create.c:308
#9  0x00007ffe1481ecbd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#10 0x0000000000000000 in ?? ()

Thread 12 (Thread 0x7ffd9d494700 (LWP 27968)):
#0  0x00007ffe14813303 in __GI___poll (fds=<optimized out>, nfds=<optimized out>, timeout=<optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007ffe13061d84 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007ffe13061ea4 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007ffe156cf326 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/local/qt-4.8.4-git/lib/libQtCore.so.4
#4  0x00007ffe156a0c8f in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/local/qt-4.8.4-git/lib/libQtCore.so.4
#5  0x00007ffe156a0f18 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/local/qt-4.8.4-git/lib/libQtCore.so.4
#6  0x00007ffe155a4040 in QThread::exec() () from /usr/local/qt-4.8.4-git/lib/libQtCore.so.4
#7  0x00007ffe155a701c in ?? () from /usr/local/qt-4.8.4-git/lib/libQtCore.so.4
#8  0x00007ffe15306e9a in start_thread (arg=0x7ffd9d494700) at pthread_create.c:308
#9  0x00007ffe1481ecbd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#10 0x0000000000000000 in ?? ()
---Type <return> to continue, or q <return> to quit---

Thread 11 (Thread 0x7ffdc5256700 (LWP 27322)):
#0  0x00007ffe14813303 in __GI___poll (fds=<optimized out>, nfds=<optimized out>, timeout=<optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007ffe13061d84 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007ffe13061ea4 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007ffe156cf326 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/local/qt-4.8.4-git/lib/libQtCore.so.4
#4  0x00007ffe156a0c8f in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/local/qt-4.8.4-git/lib/libQtCore.so.4
#5  0x00007ffe156a0f18 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/local/qt-4.8.4-git/lib/libQtCore.so.4
#6  0x00007ffe155a4040 in QThread::exec() () from /usr/local/qt-4.8.4-git/lib/libQtCore.so.4
#7  0x00007ffe155a701c in ?? () from /usr/local/qt-4.8.4-git/lib/libQtCore.so.4
#8  0x00007ffe15306e9a in start_thread (arg=0x7ffdc5256700) at pthread_create.c:308
#9  0x00007ffe1481ecbd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#10 0x0000000000000000 in ?? ()

Thread 10 (Thread 0x7ffd8f7fe700 (LWP 28440)):
#0  0x00007ffe14813303 in __GI___poll (fds=<optimized out>, nfds=<optimized out>, timeout=<optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007ffe13061d84 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007ffe13061ea4 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007ffe156cf326 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/local/qt-4.8.4-git/lib/libQtCore.so.4
#4  0x00007ffe156a0c8f in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/local/qt-4.8.4-git/lib/libQtCore.so.4
#5  0x00007ffe156a0f18 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/local/qt-4.8.4-git/lib/libQtCore.so.4
#6  0x00007ffe155a4040 in QThread::exec() () from /usr/local/qt-4.8.4-git/lib/libQtCore.so.4
#7  0x00007ffe155a701c in ?? () from /usr/local/qt-4.8.4-git/lib/libQtCore.so.4
#8  0x00007ffe15306e9a in start_thread (arg=0x7ffd8f7fe700) at pthread_create.c:308
#9  0x00007ffe1481ecbd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#10 0x0000000000000000 in ?? ()

Thread 9 (Thread 0x7ffdb74a1700 (LWP 27438)):
#0  0x00007ffe14813303 in __GI___poll (fds=<optimized out>, nfds=<optimized out>, timeout=<optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007ffe13061d84 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007ffe13061ea4 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007ffe156cf326 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/local/qt-4.8.4-git/lib/libQtCore.so.4
#4  0x00007ffe156a0c8f in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/local/qt-4.8.4-git/lib/libQtCore.so.4
#5  0x00007ffe156a0f18 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/local/qt-4.8.4-git/lib/libQtCore.so.4
#6  0x00007ffe155a4040 in QThread::exec() () from /usr/local/qt-4.8.4-git/lib/libQtCore.so.4
#7  0x00007ffe155a701c in ?? () from /usr/local/qt-4.8.4-git/lib/libQtCore.so.4
#8  0x00007ffe15306e9a in start_thread (arg=0x7ffdb74a1700) at pthread_create.c:308
#9  0x00007ffe1481ecbd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#10 0x0000000000000000 in ?? ()

Thread 8 (Thread 0x7ffdc77fc700 (LWP 27101)):
#0  0x00007ffe14813303 in __GI___poll (fds=<optimized out>, nfds=<optimized out>, timeout=<optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007ffe13061d84 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007ffe13061ea4 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007ffe156cf346 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/local/qt-4.8.4-git/lib/libQtCore.so.4
#4  0x00007ffe156a0c8f in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/local/qt-4.8.4-git/lib/libQtCore.so.4
#5  0x00007ffe156a0f18 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/local/qt-4.8.4-git/lib/libQtCore.so.4
#6  0x00007ffe155a4040 in QThread::exec() () from /usr/local/qt-4.8.4-git/lib/libQtCore.so.4
#7  0x00007ffe155a701c in ?? () from /usr/local/qt-4.8.4-git/lib/libQtCore.so.4
#8  0x00007ffe15306e9a in start_thread (arg=0x7ffdc77fc700) at pthread_create.c:308
#9  0x00007ffe1481ecbd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#10 0x0000000000000000 in ?? ()

Thread 7 (Thread 0x7ffdc6ffb700 (LWP 27150)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007ffe17b32009 in ?? () from /usr/local/qt-4.8.4-git/lib/libQtWebKit.so.4
#2  0x00007ffe17e16e8e in ?? () from /usr/local/qt-4.8.4-git/lib/libQtWebKit.so.4
#3  0x00007ffe15306e9a in start_thread (arg=0x7ffdc6ffb700) at pthread_create.c:308
#4  0x00007ffe1481ecbd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#5  0x0000000000000000 in ?? ()

Thread 6 (Thread 0x7ffdb7fff700 (LWP 27351)):
---Type <return> to continue, or q <return> to quit---
#0  0x00007ffe14813303 in __GI___poll (fds=<optimized out>, nfds=<optimized out>, timeout=<optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007ffe13061d84 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007ffe13061ea4 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007ffe156cf346 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/local/qt-4.8.4-git/lib/libQtCore.so.4
#4  0x00007ffe156a0c8f in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/local/qt-4.8.4-git/lib/libQtCore.so.4
#5  0x00007ffe156a0f18 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/local/qt-4.8.4-git/lib/libQtCore.so.4
#6  0x00007ffe155a4040 in QThread::exec() () from /usr/local/qt-4.8.4-git/lib/libQtCore.so.4
#7  0x00007ffe155a701c in ?? () from /usr/local/qt-4.8.4-git/lib/libQtCore.so.4
#8  0x00007ffe15306e9a in start_thread (arg=0x7ffdb7fff700) at pthread_create.c:308
#9  0x00007ffe1481ecbd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#10 0x0000000000000000 in ?? ()

Thread 5 (Thread 0x7ffdb5d9b700 (LWP 27524)):
#0  0x00007ffe14813303 in __GI___poll (fds=<optimized out>, nfds=<optimized out>, timeout=<optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007ffe13061d84 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007ffe13061ea4 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007ffe156cf346 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/local/qt-4.8.4-git/lib/libQtCore.so.4
#4  0x00007ffe156a0c8f in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/local/qt-4.8.4-git/lib/libQtCore.so.4
#5  0x00007ffe156a0f18 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/local/qt-4.8.4-git/lib/libQtCore.so.4
#6  0x00007ffe155a4040 in QThread::exec() () from /usr/local/qt-4.8.4-git/lib/libQtCore.so.4
#7  0x00007ffe155a701c in ?? () from /usr/local/qt-4.8.4-git/lib/libQtCore.so.4
#8  0x00007ffe15306e9a in start_thread (arg=0x7ffdb5d9b700) at pthread_create.c:308
#9  0x00007ffe1481ecbd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#10 0x0000000000000000 in ?? ()

Thread 4 (Thread 0x7ffdc7ffd700 (LWP 27099)):
#0  0x00007ffe14813303 in __GI___poll (fds=<optimized out>, nfds=<optimized out>, timeout=<optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007ffe13061d84 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007ffe13061ea4 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007ffe156cf346 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/local/qt-4.8.4-git/lib/libQtCore.so.4
#4  0x00007ffe156a0c8f in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/local/qt-4.8.4-git/lib/libQtCore.so.4
#5  0x00007ffe156a0f18 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/local/qt-4.8.4-git/lib/libQtCore.so.4
#6  0x00007ffe155a4040 in QThread::exec() () from /usr/local/qt-4.8.4-git/lib/libQtCore.so.4
#7  0x00007ffe155a701c in ?? () from /usr/local/qt-4.8.4-git/lib/libQtCore.so.4
#8  0x00007ffe15306e9a in start_thread (arg=0x7ffdc7ffd700) at pthread_create.c:308
#9  0x00007ffe1481ecbd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#10 0x0000000000000000 in ?? ()

Thread 3 (Thread 0x7ffe0d16a700 (LWP 27098)):
#0  0x00007ffe14813303 in __GI___poll (fds=<optimized out>, nfds=<optimized out>, timeout=<optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007ffe13061d84 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007ffe13061ea4 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007ffe156cf346 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/local/qt-4.8.4-git/lib/libQtCore.so.4
#4  0x00007ffe156a0c8f in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/local/qt-4.8.4-git/lib/libQtCore.so.4
#5  0x00007ffe156a0f18 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/local/qt-4.8.4-git/lib/libQtCore.so.4
#6  0x00007ffe155a4040 in QThread::exec() () from /usr/local/qt-4.8.4-git/lib/libQtCore.so.4
#7  0x00007ffe155a701c in ?? () from /usr/local/qt-4.8.4-git/lib/libQtCore.so.4
#8  0x00007ffe15306e9a in start_thread (arg=0x7ffe0d16a700) at pthread_create.c:308
#9  0x00007ffe1481ecbd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#10 0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7ffe0edaa700 (LWP 27055)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007ffe17de92b5 in ?? () from /usr/local/qt-4.8.4-git/lib/libQtWebKit.so.4
#2  0x00007ffe17de9309 in ?? () from /usr/local/qt-4.8.4-git/lib/libQtWebKit.so.4
#3  0x00007ffe15306e9a in start_thread (arg=0x7ffe0edaa700) at pthread_create.c:308
#4  0x00007ffe1481ecbd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#5  0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7ffe18c3e740 (LWP 27053)):
#0  0x0000000000000000 in ?? ()
#1  0x00007ffe17248ef5 in ?? () from /usr/local/qt-4.8.4-git/lib/libQtWebKit.so.4
---Type <return> to continue, or q <return> to quit---
#2  0x00007ffe178c9ffc in ?? () from /usr/local/qt-4.8.4-git/lib/libQtWebKit.so.4
#3  0x00007ffe17c70308 in ?? () from /usr/local/qt-4.8.4-git/lib/libQtWebKit.so.4
#4  0x00007ffe17c7a87c in ?? () from /usr/local/qt-4.8.4-git/lib/libQtWebKit.so.4
#5  0x0000000000000000 in ?? ()