Thread 6 (Thread 0xb3ea6340 (LWP 8839)):
#0 0xb68cc970 in recvmsg () at ../sysdeps/unix/syscall-template.S:81
#1 0xb5f4e18c in ustcomm_recv_unix_sock () from /usr/lib/arm-linux-gnueabihf/liblttng-ust.so.0
#2 0xb5f503b8 in ?? () from /usr/lib/arm-linux-gnueabihf/liblttng-ust.so.0
Backtrace stopped: previous frame identical to this frame (corrupt stack?)
Thread 5 (Thread 0xb34fd340 (LWP 8840)):
#0 syscall () at ../sysdeps/unix/sysv/linux/arm/syscall.S:37
#1 0xb5f505c6 in ?? () from /usr/lib/arm-linux-gnueabihf/liblttng-ust.so.0
Backtrace stopped: previous frame identical to this frame (corrupt stack?)
Thread 4 (Thread 0xb299f340 (LWP 8841)):
#0 0xb68c54e2 in poll () at ../sysdeps/unix/syscall-template.S:81
#1 0xb6af40d8 in ?? () from /lib/arm-linux-gnueabihf/libglib-2.0.so.0
Backtrace stopped: previous frame identical to this frame (corrupt stack?)
Thread 3 (Thread 0xb1ffd340 (LWP 8844)):
#0 0xb68c54e2 in poll () at ../sysdeps/unix/syscall-template.S:81
#1 0xb6af40d8 in ?? () from /lib/arm-linux-gnueabihf/libglib-2.0.so.0
Backtrace stopped: previous frame identical to this frame (corrupt stack?)
Thread 2 (Thread 0xb15fd340 (LWP 8923)):
#0 0xb68c54e2 in poll () at ../sysdeps/unix/syscall-template.S:81
#1 0xb6af40d8 in ?? () from /lib/arm-linux-gnueabihf/libglib-2.0.so.0
Backtrace stopped: previous frame identical to this frame (corrupt stack?)
Thread 1 (Thread 0xb40fd000 (LWP 8811)):
#0 0xb6a47830 in ubuntu_app_launch_get_primary_pid (appid=0x6b3f4 "com.ubuntu.docviewer_docviewer_2.1.330")
at /build/ubuntu-app-launch-106o4I/ubuntu-app-launch-0.9+15.04.20160817.1/libubuntu-app-launch/ubuntu-app-launch.cpp:1214
#1 0xb6bb62d0 in com::ubuntu::content::detail::AppManager::is_application_started(std::string const&) () from /usr/lib/arm-linux-gnueabihf/libcontent-hub.so.0
#2 0xb6bbd570 in com::ubuntu::content::detail::Service::handle_exports(int) () from /usr/lib/arm-linux-gnueabihf/libcontent-hub.so.0
#3 0xb6bcec6c in ?? () from /usr/lib/arm-linux-gnueabihf/libcontent-hub.so.0
#4 0xb6e3edb4 in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib/arm-linux-gnueabihf/libQt5Core.so.5
#5 0xb6bce3d0 in com::ubuntu::content::detail::Transfer::StateChanged(int) () from /usr/lib/arm-linux-gnueabihf/libcontent-hub.so.0
#6 0xb6bc5d98 in com::ubuntu::content::detail::Transfer::Charge(QList<QVariant> const&) () from /usr/lib/arm-linux-gnueabihf/libcontent-hub.so.0
#7 0xb6bcd7b2 in ?? () from /usr/lib/arm-linux-gnueabihf/libcontent-hub.so.0
#8 0xb6bcd8aa in TransferAdaptor::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib/arm-linux-gnueabihf/libcontent-hub.so.0
#9 0xb6c06678 in ?? () from /usr/lib/arm-linux-gnueabihf/libQt5DBus.so.5
Backtrace stopped: previous frame identical to this frame (corrupt stack?)