Bug 494915

Summary: ksystemstats crashes with sigsegv
Product: [Frameworks and Libraries] ksystemstats Reporter: Ayke <aykevanlaethem>
Component: GeneralAssignee: Plasma Bugs List <plasma-bugs>
Status: RESOLVED DUPLICATE    
Severity: crash CC: ahiemstra, m.kurz
Priority: NOR Keywords: drkonqi
Version: 6.2.0   
Target Milestone: ---   
Platform: Fedora RPMs   
OS: Linux   
Latest Commit: Version Fixed In:
Sentry Crash Report: https://crash-reports.kde.org/organizations/kde/issues/72820/events/5d3bf45d7100486581460862910ae860/

Description Ayke 2024-10-17 07:58:39 UTC
Application: ksystemstats (6.2.0)

ApplicationNotResponding [ANR]: false
Qt Version: 6.7.2
Frameworks Version: 6.7.0
Operating System: Linux 6.11.0-400.asahi.fc40.aarch64+16k aarch64
Windowing System: Wayland
Distribution: "Fedora Linux Asahi Remix 40 (KDE Plasma)"
DrKonqi: 6.2.0 [CoredumpBackend]

-- Information about the crash:
ksystemstats crashes under two circumstances:

  * When logging in, when there are any system monitor panel applets
  * When starting System Monitor

Pretty sure this started happening after the KDE Plasma 6.2 upgrade.

The crash can be reproduced every time.

-- Backtrace:
Application: ksystemstats (ksystemstats), signal: Segmentation fault
Content of s_kcrashErrorMessage: std::unique_ptr<char []> = {get() = <optimized out>}
Downloading separate debug info for /usr/bin/ksystemstats...
Downloading separate debug info for /home/ayke/.cache/debuginfod_client/dceeb1a9a8d3234062e564a3ec48d71de72454fe/debuginfo...
[New LWP 16902]
[New LWP 16903]
Downloading separate debug info for /lib64/libKF6Crash.so.6...
Downloading separate debug info for /lib64/libKSysGuardSystemStats.so.2...
Downloading separate debug info for /home/ayke/.cache/debuginfod_client/c636a5fdc691955cf91c33436021c87bb457ce27/debuginfo...
Downloading separate debug info for /lib64/libKF6CoreAddons.so.6...
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[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib64/libthread_db.so.1".
Core was generated by `/usr/bin/ksystemstats'.
Program terminated with signal SIGSEGV, Segmentation fault.
Downloading source file /usr/src/debug/glibc-2.39-22.fc40.aarch64/nptl/pthread_kill.c...
#0  __pthread_kill_implementation (threadid=281473842069760, signo=signo@entry=11, no_tid=no_tid@entry=0) at pthread_kill.c:44
44	      return INTERNAL_SYSCALL_ERROR_P (ret) ? INTERNAL_SYSCALL_ERRNO (ret) : 0;
[Current thread is 1 (Thread 0xffffbc5ec100 (LWP 16902))]

Cannot QML trace cores :(
/usr/share/drkonqi/gdb/python/gdb_preamble/preamble.py:516: DeprecationWarning: datetime.datetime.utcfromtimestamp() is deprecated and scheduled for removal in a future version. Use timezone-aware objects to represent datetimes in UTC: datetime.datetime.fromtimestamp(timestamp, datetime.UTC).
  boot_time = datetime.utcfromtimestamp(psutil.boot_time()).strftime('%Y-%m-%dT%H:%M:%S')
Downloading source file /usr/src/debug/glibc-2.39-22.fc40.aarch64/misc/../sysdeps/unix/sysv/linux/aarch64/clone3.S...
Downloading source file /usr/src/debug/glibc-2.39-22.fc40.aarch64/nptl/pthread_create.c...
Downloading source file /usr/src/debug/qt6-qtbase-6.7.2-6.fc40.aarch64/src/corelib/thread/qthread_unix.cpp...
Downloading source file /usr/src/debug/qt6-qtbase-6.7.2-6.fc40.aarch64/src/dbus/qdbusconnectionmanager.cpp...
Downloading source file /usr/src/debug/qt6-qtbase-6.7.2-6.fc40.aarch64/src/corelib/global/qflags.h...
Downloading source file /usr/src/debug/qt6-qtbase-6.7.2-6.fc40.aarch64/src/corelib/kernel/qeventdispatcher_glib.cpp...
Downloading source file /usr/src/debug/glib2-2.80.3-1.fc40.aarch64/redhat-linux-build/../glib/gmain.c...
Downloading source file /usr/src/debug/glibc-2.39-22.fc40.aarch64/io/../sysdeps/unix/sysv/linux/poll.c...
Downloading source file /usr/src/debug/ksystemstats-6.2.0-1.fc40.aarch64/src/main.cpp...
Downloading source file /usr/src/debug/qt6-qtbase-6.7.2-6.fc40.aarch64/src/corelib/kernel/qtimerinfo_unix.cpp...
Downloading source file /usr/src/debug/qt6-qtbase-6.7.2-6.fc40.aarch64/src/corelib/kernel/qcoreapplication.cpp...
Downloading source file /usr/src/debug/qt6-qtbase-6.7.2-6.fc40.aarch64/src/corelib/kernel/qobject.cpp...
Downloading source file /usr/src/debug/qt6-qtbase-6.7.2-6.fc40.aarch64/redhat-linux-build/src/corelib/Core_autogen/include/moc_qtimer.cpp...
Downloading source file /usr/src/debug/qt6-qtbase-6.7.2-6.fc40.aarch64/src/corelib/kernel/qobjectdefs_impl.h...
Downloading source file /usr/src/debug/ksystemstats-6.2.0-1.fc40.aarch64/src/daemon.cpp...
Downloading source file /usr/src/debug/ksystemstats-6.2.0-1.fc40.aarch64/plugins/cpu/linuxcpuplugin.cpp...
Downloading source file /usr/src/debug/ksystemstats-6.2.0-1.fc40.aarch64/plugins/cpu/linuxcpu.cpp...
/usr/share/drkonqi/gdb/python/gdb_preamble/preamble.py:533: DeprecationWarning: datetime.datetime.utcnow() is deprecated and scheduled for removal in a future version. Use timezone-aware objects to represent datetimes in UTC: datetime.datetime.now(datetime.UTC).
  'timestamp': datetime.utcnow().isoformat(),
Python Exception <class 'ValueError'>: not enough values to unpack (expected 2, got 1)
/tmp/drkonqi.bLvaiV:4: Error in sourced command file:
Error occurred in Python: not enough values to unpack (expected 2, got 1)
[Current thread is 1 (Thread 0xffffbc5ec100 (LWP 16902))]

Thread 2 (Thread 0xffffb6ffef20 (LWP 16903)):
#0  0x0000ffffbb8e6254 in __GI___poll (fds=0xaaab4b912ca0, nfds=<optimized out>, timeout=<optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:41
#1  0x0000ffffba2f56f8 [PAC] in g_main_context_poll_unlocked (priority=2147483647, context=0xffffa0000c60, timeout=<optimized out>, fds=0xaaab4b912ca0, n_fds=3) at ../glib/gmain.c:4521
#2  g_main_context_iterate_unlocked.isra.0 (context=context@entry=0xffffa0000c60, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ../glib/gmain.c:4212
#3  0x0000ffffba292084 [PAC] in g_main_context_iteration (context=0xffffa0000c60, may_block=1) at ../glib/gmain.c:4282
#4  0x0000ffffbc0c2638 [PAC] in QEventDispatcherGlib::processEvents (this=0xffffa0000b70, flags=...) at /usr/src/debug/qt6-qtbase-6.7.2-6.fc40.aarch64/src/corelib/kernel/qeventdispatcher_glib.cpp:394
#5  0x0000ffffbbdcf674 [PAC] in QEventLoop::exec (this=this@entry=0xffffb6ffe578, flags=flags@entry=...) at /usr/src/debug/qt6-qtbase-6.7.2-6.fc40.aarch64/src/corelib/global/qflags.h:34
#6  0x0000ffffbbef4c2c [PAC] in QThread::exec (this=this@entry=0xffffbc4719a0 <QGlobalStatic<QtGlobalStatic::Holder<(anonymous namespace)::Q_QGS__q_manager> >::instance()::holder>) at /usr/src/debug/qt6-qtbase-6.7.2-6.fc40.aarch64/src/corelib/global/qflags.h:74
#7  0x0000ffffbc3bd790 [PAC] in QDBusConnectionManager::run (this=0xffffbc4719a0 <QGlobalStatic<QtGlobalStatic::Holder<(anonymous namespace)::Q_QGS__q_manager> >::instance()::holder>) at /usr/src/debug/qt6-qtbase-6.7.2-6.fc40.aarch64/src/dbus/qdbusconnectionmanager.cpp:144
#8  0x0000ffffbbf884d4 [PAC] in operator() (__closure=<optimized out>) at /usr/src/debug/qt6-qtbase-6.7.2-6.fc40.aarch64/src/corelib/thread/qthread_unix.cpp:326
#9  (anonymous namespace)::terminate_on_exception<QThreadPrivate::start(void*)::<lambda()> > (t=<optimized out>) at /usr/src/debug/qt6-qtbase-6.7.2-6.fc40.aarch64/src/corelib/thread/qthread_unix.cpp:262
#10 QThreadPrivate::start (arg=0xffffbc4719a0 <QGlobalStatic<QtGlobalStatic::Holder<(anonymous namespace)::Q_QGS__q_manager> >::instance()::holder>) at /usr/src/debug/qt6-qtbase-6.7.2-6.fc40.aarch64/src/corelib/thread/qthread_unix.cpp:285
#11 0x0000ffffbb8869d8 [PAC] in start_thread (arg=0xffffb6ffef20) at pthread_create.c:447
#12 0x0000ffffbb8f1dcc [PAC] in thread_start () at ../sysdeps/unix/sysv/linux/aarch64/clone3.S:76

Thread 1 (Thread 0xffffbc5ec100 (LWP 16902)):
[KCrash Handler]
#5  0x0000ffffbc5ab820 in KSysGuard::SensorObject::isSubscribed (this=this@entry=0x0) at /usr/include/c++/14/bits/unique_ptr.h:193
#6  0x0000ffffb67bb5bc [PAC] in LinuxCpuObject::update (this=0x0, system=9330, user=22265, wait=875, idle=74006) at /usr/src/debug/ksystemstats-6.2.0-1.fc40.aarch64/plugins/cpu/linuxcpu.cpp:63
#7  LinuxCpuPluginPrivate::update (this=0xaaab4b9277d0) at /usr/src/debug/ksystemstats-6.2.0-1.fc40.aarch64/plugins/cpu/linuxcpuplugin.cpp:163
#8  0x0000aaab3c445f80 [PAC] in Daemon::sendFrame (this=0xfffffe929bf8) at /usr/src/debug/ksystemstats-6.2.0-1.fc40.aarch64/src/daemon.cpp:264
#9  0x0000ffffbbe3240c [PAC] in QtPrivate::QSlotObjectBase::call (this=0xaaab4b9131d0, r=<optimized out>, a=0xfffffe929628) at /usr/src/debug/qt6-qtbase-6.7.2-6.fc40.aarch64/src/corelib/kernel/qobjectdefs_impl.h:469
#10 doActivate<false> (sender=0xaaab4b913110, signal_index=3, argv=0xfffffe929628) at /usr/src/debug/qt6-qtbase-6.7.2-6.fc40.aarch64/src/corelib/kernel/qobject.cpp:4086
#11 0x0000ffffbbe2873c [PAC] in QMetaObject::activate (sender=<optimized out>, m=m@entry=0xffffbc302368 <QTimer::staticMetaObject>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0xfffffe929628) at /usr/src/debug/qt6-qtbase-6.7.2-6.fc40.aarch64/src/corelib/kernel/qobject.cpp:4146
#12 0x0000ffffbbe44764 in QTimer::timeout (this=<optimized out>, _t1=...) at /usr/src/debug/qt6-qtbase-6.7.2-6.fc40.aarch64/redhat-linux-build/src/corelib/Core_autogen/include/moc_qtimer.cpp:224
#13 0x0000ffffbbe235e8 [PAC] in QObject::event (this=0xaaab4b913110, e=0xfffffe929780) at /usr/src/debug/qt6-qtbase-6.7.2-6.fc40.aarch64/src/corelib/kernel/qobject.cpp:1482
#14 0x0000ffffbbdc1cfc [PAC] in doNotify (receiver=<optimized out>, event=<optimized out>) at /usr/src/debug/qt6-qtbase-6.7.2-6.fc40.aarch64/src/corelib/kernel/qcoreapplication.cpp:1243
#15 QCoreApplication::notify (this=<optimized out>, receiver=<optimized out>, event=<optimized out>) at /usr/src/debug/qt6-qtbase-6.7.2-6.fc40.aarch64/src/corelib/kernel/qcoreapplication.cpp:1226
#16 QCoreApplication::notifyInternal2 (receiver=0xaaab4b913110, event=event@entry=0xfffffe929780) at /usr/src/debug/qt6-qtbase-6.7.2-6.fc40.aarch64/src/corelib/kernel/qcoreapplication.cpp:1142
#17 0x0000ffffbbdc205c [PAC] in QCoreApplication::sendEvent (receiver=<optimized out>, event=event@entry=0xfffffe929780) at /usr/src/debug/qt6-qtbase-6.7.2-6.fc40.aarch64/src/corelib/kernel/qcoreapplication.cpp:1583
#18 0x0000ffffbbf86588 in QTimerInfoList::activateTimers (this=0xaaab4b90b340) at /usr/src/debug/qt6-qtbase-6.7.2-6.fc40.aarch64/src/corelib/kernel/qtimerinfo_unix.cpp:434
#19 0x0000ffffbc0c2494 [PAC] in timerSourceDispatch (source=<optimized out>) at /usr/src/debug/qt6-qtbase-6.7.2-6.fc40.aarch64/src/corelib/kernel/qeventdispatcher_glib.cpp:150
#20 idleTimerSourceDispatch (source=<optimized out>) at /usr/src/debug/qt6-qtbase-6.7.2-6.fc40.aarch64/src/corelib/kernel/qeventdispatcher_glib.cpp:197
#21 0x0000ffffba2909b4 [PAC] in g_main_dispatch (context=0xaaab4b90ae70) at ../glib/gmain.c:3344
#22 g_main_context_dispatch_unlocked (context=0xaaab4b90ae70) at ../glib/gmain.c:4152
#23 0x0000ffffba2f5744 [PAC] in g_main_context_iterate_unlocked.isra.0 (context=context@entry=0xaaab4b90ae70, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ../glib/gmain.c:4217
#24 0x0000ffffba292084 [PAC] in g_main_context_iteration (context=0xaaab4b90ae70, may_block=1) at ../glib/gmain.c:4282
#25 0x0000ffffbc0c2638 [PAC] in QEventDispatcherGlib::processEvents (this=0xaaab4b90ae10, flags=...) at /usr/src/debug/qt6-qtbase-6.7.2-6.fc40.aarch64/src/corelib/kernel/qeventdispatcher_glib.cpp:394
#26 0x0000ffffbbdcf674 [PAC] in QEventLoop::exec (this=this@entry=0xfffffe929a70, flags=flags@entry=...) at /usr/src/debug/qt6-qtbase-6.7.2-6.fc40.aarch64/src/corelib/global/qflags.h:34
#27 0x0000ffffbbdcac1c [PAC] in QCoreApplication::exec () at /usr/src/debug/qt6-qtbase-6.7.2-6.fc40.aarch64/src/corelib/global/qflags.h:74
#28 0x0000aaab3c440f48 [PAC] in main (argc=<optimized out>, argv=<optimized out>) at /usr/src/debug/ksystemstats-6.2.0-1.fc40.aarch64/src/main.cpp:39

Reported using DrKonqi
Comment 1 m.kurz 2024-11-10 22:23:31 UTC
Pretty sure this is a duplicate of bug 495524
Comment 2 Ayke 2024-11-11 08:52:15 UTC
Yes, this looks like a duplicate.

This is what my /proc/cpuinfo looks like:

    processor   : 0
    BogoMIPS    : 48.00
    Features    : fp asimd evtstrm aes pmull sha1 sha2 crc32 atomics fphp asimdhp cpuid asimdrdm jscvt fcma lrcpc dcpop sha3 asimddp sha512 asimdfhm dit uscat ilrcpc flagm ssbs sb paca pacg dcpodp flagm2 frint
    CPU implementer     : 0x61
    CPU architecture: 8
    CPU variant : 0x2
    CPU part    : 0x024
    CPU revision        : 0
    
    processor   : 1
    BogoMIPS    : 48.00
    Features    : fp asimd evtstrm aes pmull sha1 sha2 crc32 atomics fphp asimdhp cpuid asimdrdm jscvt fcma lrcpc dcpop sha3 asimddp sha512 asimdfhm dit uscat ilrcpc flagm ssbs sb paca pacg dcpodp flagm2 frint
    CPU implementer     : 0x61
    CPU architecture: 8
    CPU variant : 0x2
    CPU part    : 0x024
    CPU revision        : 0
    
    processor   : 2
    BogoMIPS    : 48.00
    Features    : fp asimd evtstrm aes pmull sha1 sha2 crc32 atomics fphp asimdhp cpuid asimdrdm jscvt fcma lrcpc dcpop sha3 asimddp sha512 asimdfhm dit uscat ilrcpc flagm ssbs sb paca pacg dcpodp flagm2 frint
    CPU implementer     : 0x61
    CPU architecture: 8
    CPU variant : 0x2
    CPU part    : 0x025
    CPU revision        : 0
    
    processor   : 3
    BogoMIPS    : 48.00
    Features    : fp asimd evtstrm aes pmull sha1 sha2 crc32 atomics fphp asimdhp cpuid asimdrdm jscvt fcma lrcpc dcpop sha3 asimddp sha512 asimdfhm dit uscat ilrcpc flagm ssbs sb paca pacg dcpodp flagm2 frint
    CPU implementer     : 0x61
    CPU architecture: 8
    CPU variant : 0x2
    CPU part    : 0x025
    CPU revision        : 0
    
    processor   : 4
    BogoMIPS    : 48.00
    Features    : fp asimd evtstrm aes pmull sha1 sha2 crc32 atomics fphp asimdhp cpuid asimdrdm jscvt fcma lrcpc dcpop sha3 asimddp sha512 asimdfhm dit uscat ilrcpc flagm ssbs sb paca pacg dcpodp flagm2 frint
    CPU implementer     : 0x61
    CPU architecture: 8
    CPU variant : 0x2
    CPU part    : 0x025
    CPU revision        : 0
    
    processor   : 5
    BogoMIPS    : 48.00
    Features    : fp asimd evtstrm aes pmull sha1 sha2 crc32 atomics fphp asimdhp cpuid asimdrdm jscvt fcma lrcpc dcpop sha3 asimddp sha512 asimdfhm dit uscat ilrcpc flagm ssbs sb paca pacg dcpodp flagm2 frint
    CPU implementer     : 0x61
    CPU architecture: 8
    CPU variant : 0x2
    CPU part    : 0x025
    CPU revision        : 0
    
    processor   : 6
    BogoMIPS    : 48.00
    Features    : fp asimd evtstrm aes pmull sha1 sha2 crc32 atomics fphp asimdhp cpuid asimdrdm jscvt fcma lrcpc dcpop sha3 asimddp sha512 asimdfhm dit uscat ilrcpc flagm ssbs sb paca pacg dcpodp flagm2 frint
    CPU implementer     : 0x61
    CPU architecture: 8
    CPU variant : 0x2
    CPU part    : 0x025
    CPU revision        : 0
    
    processor   : 7
    BogoMIPS    : 48.00
    Features    : fp asimd evtstrm aes pmull sha1 sha2 crc32 atomics fphp asimdhp cpuid asimdrdm jscvt fcma lrcpc dcpop sha3 asimddp sha512 asimdfhm dit uscat ilrcpc flagm ssbs sb paca pacg dcpodp flagm2 frint
    CPU implementer     : 0x61
    CPU architecture: 8
    CPU variant : 0x2
    CPU part    : 0x025
    CPU revision        : 0
    
    processor   : 8
    BogoMIPS    : 48.00
    Features    : fp asimd evtstrm aes pmull sha1 sha2 crc32 atomics fphp asimdhp cpuid asimdrdm jscvt fcma lrcpc dcpop sha3 asimddp sha512 asimdfhm dit uscat ilrcpc flagm ssbs sb paca pacg dcpodp flagm2 frint
    CPU implementer     : 0x61
    CPU architecture: 8
    CPU variant : 0x2
    CPU part    : 0x025
    CPU revision        : 0
    
    processor   : 9
    BogoMIPS    : 48.00
    Features    : fp asimd evtstrm aes pmull sha1 sha2 crc32 atomics fphp asimdhp cpuid asimdrdm jscvt fcma lrcpc dcpop sha3 asimddp sha512 asimdfhm dit uscat ilrcpc flagm ssbs sb paca pacg dcpodp flagm2 frint
    CPU implementer     : 0x61
    CPU architecture: 8
    CPU variant : 0x2
    CPU part    : 0x025
    CPU revision        : 0
Comment 3 m.kurz 2024-11-11 08:54:43 UTC
I will mark it as duplicate then.
Let us know if, after bug 495524 gets fixed you still have problems afterwards.

*** This bug has been marked as a duplicate of bug 495524 ***