All my audio music applications crashes because of libjack.so.0 : Sorry for my english. Backtraces : 1) qjackctl thread 1 "qjackctl" received signal SIGSEGV, Segmentation fault. 0x00007ffff7f925b7 in Jack::JackLinuxFutex::BuildName(char const*, char const*, char*, int) [clone .constprop.0] () from /lib64/libjack.so.0 (gdb) bt #0 0x00007ffff7f925b7 in Jack::JackLinuxFutex::BuildName(char const*, char const*, char*, int) [clone .constprop.0] () from /lib64/libjack.so.0 #1 0x00007ffff7f92665 in Jack::JackLinuxFutex::Connect(char const*, char const*) () from /lib64/libjack.so.0 #2 0x00007ffff7f929cf in Jack::JackLibClient::Open(char const*, char const*, unsigned long, JackOptions, JackStatus*) () from /lib64/libjack.so.0 #3 0x00007ffff7f9582a in jack_client_open () from /lib64/libjack.so.0 #4 0x00005555555e2c98 in qjackctlMainForm::startJackClient(bool) () #5 0x0000555555614f8f in qjackctlMainForm::qt_static_metacall(QObject*, QMetaObject::Call, int, void**) [clone .part.0] () #6 0x00007ffff6d7dfb0 in void doActivate<false>(QObject*, int, void**) () from /lib64/libQt5Core.so.5 #7 0x00007ffff6d815a3 in QSingleShotTimer::timerEvent(QTimerEvent*) () from /lib64/libQt5Core.so.5 #8 0x00007ffff6d76abf in QObject::event(QEvent*) () from /lib64/libQt5Core.so.5 #9 0x00007ffff7939063 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /lib64/libQt5Widgets.so.5 #10 0x00007ffff6d4efc0 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /lib64/libQt5Core.so.5 #11 0x00007ffff6d99e83 in QTimerInfoList::activateTimers() () from /lib64/libQt5Core.so.5 #12 0x00007ffff6d9a77c in timerSourceDispatch(_GSource*, int (*)(void*), void*) () from /lib64/libQt5Core.so.5 #13 0x00007ffff568e88f in g_main_context_dispatch () from /lib64/libglib-2.0.so.0 #14 0x00007ffff56e0288 in g_main_context_iterate.constprop () from /lib64/libglib-2.0.so.0 #15 0x00007ffff568bc43 in g_main_context_iteration () from /lib64/libglib-2.0.so.0 #16 0x00007ffff6d9ab73 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5 #17 0x00007ffff6d4d91b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5 #18 0x00007ffff6d555a6 in QCoreApplication::exec() () from /lib64/libQt5Core.so.5 #19 0x0000555555595cb6 in main () (gdb) 2) qsynth Thread 6 "qsynth" received signal SIGSEGV, Segmentation fault. [Switching to Thread 0x7fffda955640 (LWP 4387)] 0x00007ffff619bcba in Jack::JackClient::WaitSync() () from /lib64/libjack.so.0 (gdb) bt #0 0x00007ffff619bcba in Jack::JackClient::WaitSync() () from /lib64/libjack.so.0 #1 0x00007ffff61a2874 in Jack::JackClient::Execute() () from /lib64/libjack.so.0 #2 0x00007ffff61aacc6 in Jack::JackPosixThread::ThreadHandler(void*) () from /lib64/libjack.so.0 #3 0x00007ffff67063f9 in start_thread () from /lib64/libpthread.so.0 #4 0x00007ffff6820b43 in clone () from /lib64/libc.so.6 (gdb) 3) rosegarden Thread 9 "QThread" received signal SIGSEGV, Segmentation fault. [Switching to Thread 0x7fffe8511640 (LWP 4485)] 0x00007ffff6834cba in Jack::JackClient::WaitSync() () from /lib64/libjack.so.0 (gdb) bt #0 0x00007ffff6834cba in Jack::JackClient::WaitSync() () from /lib64/libjack.so.0 #1 0x00007ffff683b874 in Jack::JackClient::Execute() () from /lib64/libjack.so.0 #2 0x00007ffff6843cc6 in Jack::JackPosixThread::ThreadHandler(void*) () from /lib64/libjack.so.0 #3 0x00007ffff6c6e3f9 in start_thread () from /lib64/libpthread.so.0 #4 0x00007ffff62ffb43 in clone () from /lib64/libc.so.6 (gdb) 4) muse sequencer Thread 1 "muse3" received signal SIGSEGV, Segmentation fault. 0x00007ffff5cc0a01 in jack_get_ports.cold () from /lib64/libjack.so.0 (gdb) (gdb) bt #0 0x00007ffff5cc0a01 in jack_get_ports.cold () from /lib64/libjack.so.0 #1 0x00007ffff7cd9c1f in MusECore::JackAudioDevice::inputPorts[abi:cxx11](bool, int) () from /usr/lib64/muse-3.0/modules/libmuse_driver.so #2 0x00007ffff7e20291 in MusECore::enumerateJackMidiDevices() () from /usr/lib64/muse-3.0/modules/libmuse_core.so #3 0x000055555555d79e in main ()
Same issues with the latest fedora 33 live kde compose.
The crashes seems to came from the LTO flags build. Adding " %define _lto_cflags %{nil}" in the spec file and rebuild the package solves the issue.
Latest rawhide build is without LTO (https://koji.fedoraproject.org/koji/taskinfo?taskID=50140186). Can you try with that?
Your build is ok. The bug is resolved. Thanks
FEDORA-2020-43dfda58b3 has been submitted as an update to Fedora 33. https://bodhi.fedoraproject.org/updates/FEDORA-2020-43dfda58b3
FEDORA-2020-43dfda58b3 has been pushed to the Fedora 33 testing repository. In short time you'll be able to install the update with the following command: `sudo dnf upgrade --enablerepo=updates-testing --advisory=FEDORA-2020-43dfda58b3` You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2020-43dfda58b3 See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.
FEDORA-2020-43dfda58b3 has been pushed to the Fedora 33 stable repository. If problem still persists, please make note of it in this bug report.