https://bugs.kde.org/show_bug.cgi?id=487106
Bug ID: 487106
Summary: kwin_wayland crash when alt-tab'ing
Classification: Plasma
Product: kwin
Version: 6.0.4
Platform: Arch Linux
OS: Linux
Status: REPORTED
Severity: crash
Priority: NOR
Component: wayland-generic
Assignee: kwin-bugs-n...@kde.org
Reporter: nickdi...@igalia.com
Target Milestone: ---
SUMMARY
With no windows open, for example, hit Alt-Tab a few times causes a
kwin_wayland crash.
STEPS TO REPRODUCE
1. Log in to a Plasma/Wayland session
2. Hit alt-tab a few times until it crashes
OBSERVED RESULT
kwin_wayland crashes (and restarts automatically). ps: After restarting a few
times it is mostly broken, apps timeout on launch, some glitches start to
appear on the screen, etc.
EXPECTED RESULT
No crashes.
SOFTWARE/OS VERSIONS
Operating System: Arch Linux
KDE Plasma Version: 6.0.4
KDE Frameworks Version: 6.2.0
Qt Version: 6.7.0
Kernel Version: 6.6.30-2-lts (64-bit)
Graphics Platform: Wayland
Processors: 20 × 13th Gen Intel® Core™ i9-13900H
Memory: 94.1 GiB of RAM
Graphics Processor: NVIDIA RTX 2000 Ada Generation Laptop GPU/PCIe/SSE2
Manufacturer: LENOVO
Product Name: 21FVCTO1WW
System Version: ThinkPad P1 Gen 6
ADDITIONAL INFORMATION
Stack trace:
```
PID: 2877 (kwin_wayland)
UID: 1000 (nick)
GID: 1000 (nick)
Signal: 11 (SEGV)
Timestamp: Thu 2024-05-16 09:34:44 -04 (53s ago)
Command Line: /usr/bin/kwin_wayland --wayland-fd 7 --socket wayland-0
--xwayland-fd 8 --xwayland-fd 9 --xwayland-display :1 --xwayland-xauthority
/run/user/1000/xauth_GOjoXI --xwayland
Executable: /usr/bin/kwin_wayland
Control Group:
/user.slice/user-1000.slice/user@1000.service/session.slice/plasma-kwin_wayland.service
Unit: user@1000.service
User Unit: plasma-kwin_wayland.service
Slice: user-1000.slice
Owner UID: 1000 (nick)
Boot ID: 7b6a47e451b045de9d2dfcfcd12d5e5f
Machine ID: 58742de25d1848f1af1137de3410bb36
Hostname: alyam
Storage:
/var/lib/systemd/coredump/core.kwin_wayland.1000.7b6a47e451b045de9d2dfcfcd12d5e5f.2877.1715866484000000.zst
(inaccessible)
Message: Process 2877 (kwin_wayland) of user 1000 dumped core.
Stack trace of thread 2877:
#0 0x0000744f1d46b0ff _ZN19QSGSoftwareRenderer6renderEv
(libQt6Quick.so.6 + 0x26b0ff)
#1 0x0000744f1d4942b2 n/a (libQt6Quick.so.6 + 0x2942b2)
#2 0x0000744f1d44004b
_ZN19QQuickWindowPrivate16renderSceneGraphEv (libQt6Quick.so.6 + 0x24004b)
#3 0x0000744f1d46c465 n/a (libQt6Quick.so.6 + 0x26c465)
#4 0x0000744f1d46cb51 n/a (libQt6Quick.so.6 + 0x26cb51)
#5 0x0000744f1bbd63d9 _ZN7QWindow5eventEP6QEvent
(libQt6Gui.so.6 + 0x1d63d9)
#6 0x0000744f1c4fc44d
_ZN19QApplicationPrivate13notify_helperEP7QObjectP6QEvent (libQt6Widgets.so.6 +
0xfc44d)
#7 0x0000744f1b53fe18
_ZN16QCoreApplication15notifyInternal2EP7QObjectP6QEvent (libQt6Core.so.6 +
0x13fe18)
#8 0x0000744f1bb84304
_ZN22QGuiApplicationPrivate18processExposeEventEPN29QWindowSystemInterfacePrivate11ExposeEventE
(libQt6Gui.so.6 + 0x184304)
#9 0x0000744f1bbe8dcc
_ZN22QWindowSystemInterface22sendWindowSystemEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE
(libQt6Gui.so.6 + 0x1e8dcc)
#10 0x0000744f1c080817 n/a (libQt6Gui.so.6 + 0x680817)
#11 0x0000744ee1d77d51
_ZThn40_N11PlasmaQuick6Dialog17componentCompleteEv (libPlasmaQuick.so.6 +
0x36d51)
#12 0x0000744f1ced01e1
_ZN17QQmlObjectCreator8finalizeER26QQmlInstantiationInterrupt (libQt6Qml.so.6 +
0x2d01e1)
#13 0x0000744f1cea0d57
_ZN20QQmlIncubatorPrivate8incubateER26QQmlInstantiationInterrupt
(libQt6Qml.so.6 + 0x2a0d57)
#14 0x0000744f1cea1996
_ZN17QQmlEnginePrivate8incubateER13QQmlIncubatorRK14QQmlRefPointerI15QQmlContextDataE
(libQt6Qml.so.6 + 0x2a1996)
#15 0x0000744f1a7b917d n/a (libQt6QmlModels.so.6 + 0x6917d)
#16 0x0000744f1a781c12
_ZN23QQmlInstantiatorPrivate10regenerateEv (libQt6QmlModels.so.6 + 0x31c12)
#17 0x0000744f1ce3a4f8 n/a (libQt6Qml.so.6 + 0x23a4f8)
#18 0x0000744f1ce4f2c1 n/a (libQt6Qml.so.6 + 0x24f2c1)
#19 0x0000744f1ce4dadd
_ZN11QQmlBinding8doUpdateERKN24QQmlJavaScriptExpression13DeleteWatcherE6QFlagsIN16QQmlPropertyData9WriteFlagEERN3QV45ScopeE
(libQt6Qml.so.6 + 0x24dadd)
#20 0x0000744f1ce4d0a4
_ZN11QQmlBinding6updateE6QFlagsIN16QQmlPropertyData9WriteFlagEE (libQt6Qml.so.6
+ 0x24d0a4)
#21 0x0000744f1cec2ad7
_ZN12QQmlNotifier10emitNotifyEP20QQmlNotifierEndpointPPv (libQt6Qml.so.6 +
0x2c2ad7)
#22 0x0000744f1b59b38a n/a (libQt6Core.so.6 + 0x19b38a)
#23 0x0000744f1def0833 _ZN4KWin6TabBox6TabBox4showEv
(libkwin.so.6 + 0x4f0833)
#24 0x0000744f1b59b57f n/a (libQt6Core.so.6 + 0x19b57f)
#25 0x0000744f1b5a0d05 _ZN6QTimer10timerEventEP11QTimerEvent
(libQt6Core.so.6 + 0x1a0d05)
#26 0x0000744f1b58c0e6 _ZN7QObject5eventEP6QEvent
(libQt6Core.so.6 + 0x18c0e6)
#27 0x0000744f1c4fc44d
_ZN19QApplicationPrivate13notify_helperEP7QObjectP6QEvent (libQt6Widgets.so.6 +
0xfc44d)
#28 0x0000744f1b53fe18
_ZN16QCoreApplication15notifyInternal2EP7QObjectP6QEvent (libQt6Core.so.6 +
0x13fe18)
#29 0x0000744f1b6b7988 _ZN14QTimerInfoList14activateTimersEv
(libQt6Core.so.6 + 0x2b7988)
#30 0x0000744f1b6ba53f
_ZN20QEventDispatcherUNIX13processEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE
(libQt6Core.so.6 + 0x2ba53f)
#31 0x0000744f1bfe12b3
_ZN23QUnixEventDispatcherQPA13processEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE
(libQt6Gui.so.6 + 0x5e12b3)
#32 0x0000744f1b548350
_ZN10QEventLoop4execE6QFlagsINS_17ProcessEventsFlagEE (libQt6Core.so.6 +
0x148350)
#33 0x0000744f1b543c1d _ZN16QCoreApplication4execEv
(libQt6Core.so.6 + 0x143c1d)
#34 0x00005eb624af3dee n/a (kwin_wayland + 0x3adee)
#35 0x0000744f1ae39c88 n/a (libc.so.6 + 0x25c88)
#36 0x0000744f1ae39d4c __libc_start_main (libc.so.6 + 0x25d4c)
#37 0x00005eb624af9df5 n/a (kwin_wayland + 0x40df5)
Stack trace of thread 2909:
#0 0x0000744f1af1c39d __poll (libc.so.6 + 0x10839d)
#1 0x0000744f19f428fd n/a (libglib-2.0.so.0 + 0xbe8fd)
#2 0x0000744f19edff95 g_main_context_iteration
(libglib-2.0.so.0 + 0x5bf95)
#3 0x0000744f1b793389
_ZN20QEventDispatcherGlib13processEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE
(libQt6Core.so.6 + 0x393389)
#4 0x0000744f1b548350
_ZN10QEventLoop4execE6QFlagsINS_17ProcessEventsFlagEE (libQt6Core.so.6 +
0x148350)
#5 0x0000744f1b632a20 _ZN7QThread4execEv (libQt6Core.so.6 +
0x232a20)
#6 0x0000744f1c2b5b1e n/a (libQt6DBus.so.6 + 0x2db1e)
#7 0x0000744f1b6bb619 n/a (libQt6Core.so.6 + 0x2bb619)
#8 0x0000744f1aea6ded n/a (libc.so.6 + 0x92ded)
#9 0x0000744f1af2a0dc n/a (libc.so.6 + 0x1160dc)
Stack trace of thread 2924:
#0 0x0000744f1af1c39d __poll (libc.so.6 + 0x10839d)
#1 0x0000744f19f428fd n/a (libglib-2.0.so.0 + 0xbe8fd)
#2 0x0000744f19edff95 g_main_context_iteration
(libglib-2.0.so.0 + 0x5bf95)
#3 0x0000744f1b793389
_ZN20QEventDispatcherGlib13processEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE
(libQt6Core.so.6 + 0x393389)
#4 0x0000744f1b548350
_ZN10QEventLoop4execE6QFlagsINS_17ProcessEventsFlagEE (libQt6Core.so.6 +
0x148350)
#5 0x0000744f1b632b20 _ZN7QThread3runEv (libQt6Core.so.6 +
0x232b20)
#6 0x0000744f1b6bb619 n/a (libQt6Core.so.6 + 0x2bb619)
#7 0x0000744f1aea6ded n/a (libc.so.6 + 0x92ded)
#8 0x0000744f1af2a0dc n/a (libc.so.6 + 0x1160dc)
Stack trace of thread 2925:
#0 0x0000744f1af2a4e2 epoll_wait (libc.so.6 + 0x1164e2)
#1 0x0000744f1402fe47 n/a (libspa-support.so + 0x14e47)
#2 0x0000744f14021a21 n/a (libspa-support.so + 0x6a21)
#3 0x0000744f0ed30d23 n/a (libpipewire-0.3.so.0 + 0x1cd23)
#4 0x0000744f1aea6ded n/a (libc.so.6 + 0x92ded)
#5 0x0000744f1af2a0dc n/a (libc.so.6 + 0x1160dc)
Stack trace of thread 3334:
#0 0x0000744f1af1c39d __poll (libc.so.6 + 0x10839d)
#1 0x0000744f19f428fd n/a (libglib-2.0.so.0 + 0xbe8fd)
#2 0x0000744f19edff95 g_main_context_iteration
(libglib-2.0.so.0 + 0x5bf95)
#3 0x0000744f1b793389
_ZN20QEventDispatcherGlib13processEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE
(libQt6Core.so.6 + 0x393389)
#4 0x0000744f1b548350
_ZN10QEventLoop4execE6QFlagsINS_17ProcessEventsFlagEE (libQt6Core.so.6 +
0x148350)
#5 0x0000744f1b632b20 _ZN7QThread3runEv (libQt6Core.so.6 +
0x232b20)
#6 0x0000744f1b6bb619 n/a (libQt6Core.so.6 + 0x2bb619)
#7 0x0000744f1aea6ded n/a (libc.so.6 + 0x92ded)
#8 0x0000744f1af2a0dc n/a (libc.so.6 + 0x1160dc)
Stack trace of thread 3338:
#0 0x0000744f1aea34e9 n/a (libc.so.6 + 0x8f4e9)
#1 0x0000744f1aea6242 pthread_cond_timedwait (libc.so.6 +
0x92242)
#2 0x0000744f1b6bef68
_ZN14QWaitCondition4waitEP6QMutex14QDeadlineTimer (libQt6Core.so.6 + 0x2bef68)
#3 0x0000744f1b6c0161 n/a (libQt6Core.so.6 + 0x2c0161)
#4 0x0000744f1b6bb619 n/a (libQt6Core.so.6 + 0x2bb619)
#5 0x0000744f1aea6ded n/a (libc.so.6 + 0x92ded)
#6 0x0000744f1af2a0dc n/a (libc.so.6 + 0x1160dc)
Stack trace of thread 3337:
#0 0x0000744f1aea34e9 n/a (libc.so.6 + 0x8f4e9)
#1 0x0000744f1aea6242 pthread_cond_timedwait (libc.so.6 +
0x92242)
#2 0x0000744f1b6bef68
_ZN14QWaitCondition4waitEP6QMutex14QDeadlineTimer (libQt6Core.so.6 + 0x2bef68)
#3 0x0000744f1b6c0161 n/a (libQt6Core.so.6 + 0x2c0161)
#4 0x0000744f1b6bb619 n/a (libQt6Core.so.6 + 0x2bb619)
#5 0x0000744f1aea6ded n/a (libc.so.6 + 0x92ded)
#6 0x0000744f1af2a0dc n/a (libc.so.6 + 0x1160dc)
Stack trace of thread 2931:
#0 0x0000744f1aea34e9 n/a (libc.so.6 + 0x8f4e9)
#1 0x0000744f1aea6242 pthread_cond_timedwait (libc.so.6 +
0x92242)
#2 0x0000744f1b6bef68
_ZN14QWaitCondition4waitEP6QMutex14QDeadlineTimer (libQt6Core.so.6 + 0x2bef68)
#3 0x0000744f1b6c0161 n/a (libQt6Core.so.6 + 0x2c0161)
#4 0x0000744f1b6bb619 n/a (libQt6Core.so.6 + 0x2bb619)
#5 0x0000744f1aea6ded n/a (libc.so.6 + 0x92ded)
#6 0x0000744f1af2a0dc n/a (libc.so.6 + 0x1160dc)
Stack trace of thread 2930:
#0 0x0000744f1aea34e9 n/a (libc.so.6 + 0x8f4e9)
#1 0x0000744f1aea6552 pthread_cond_clockwait (libc.so.6 +
0x92552)
#2 0x0000744f1ddd3472 n/a (libkwin.so.6 + 0x3d3472)
#3 0x0000744f1ddcea7d n/a (libkwin.so.6 + 0x3cea7d)
#4 0x0000744f1aeac34b n/a (libc.so.6 + 0x9834b)
#5 0x0000744f1aeac3c9 pthread_once (libc.so.6 + 0x983c9)
#6 0x0000744f1ddcee2f n/a (libkwin.so.6 + 0x3cee2f)
#7 0x0000744f1b629aa5 n/a (libQt6Core.so.6 + 0x229aa5)
#8 0x0000744f1b6bb619 n/a (libQt6Core.so.6 + 0x2bb619)
#9 0x0000744f1aea6ded n/a (libc.so.6 + 0x92ded)
#10 0x0000744f1af2a0dc n/a (libc.so.6 + 0x1160dc)
Stack trace of thread 2915:
#0 0x0000744f1af1c39d __poll (libc.so.6 + 0x10839d)
#1 0x0000744f19f428fd n/a (libglib-2.0.so.0 + 0xbe8fd)
#2 0x0000744f19edff95 g_main_context_iteration
(libglib-2.0.so.0 + 0x5bf95)
#3 0x0000744f1b793389
_ZN20QEventDispatcherGlib13processEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE
(libQt6Core.so.6 + 0x393389)
#4 0x0000744f1b548350
_ZN10QEventLoop4execE6QFlagsINS_17ProcessEventsFlagEE (libQt6Core.so.6 +
0x148350)
#5 0x0000744f1b632b20 _ZN7QThread3runEv (libQt6Core.so.6 +
0x232b20)
#6 0x0000744f1b6bb619 n/a (libQt6Core.so.6 + 0x2bb619)
#7 0x0000744f1aea6ded n/a (libc.so.6 + 0x92ded)
#8 0x0000744f1af2a0dc n/a (libc.so.6 + 0x1160dc)
Stack trace of thread 2928:
#0 0x0000744f1aea34e9 n/a (libc.so.6 + 0x8f4e9)
#1 0x0000744f1aea5ed9 pthread_cond_wait (libc.so.6 + 0x91ed9)
#2 0x0000744f1b0d5e61 __gthread_cond_wait (libstdc++.so.6 +
0xd5e61)
#3 0x0000744f1ddd3760 n/a (libkwin.so.6 + 0x3d3760)
#4 0x0000744f1ddcea7d n/a (libkwin.so.6 + 0x3cea7d)
#5 0x0000744f1aeac34b n/a (libc.so.6 + 0x9834b)
#6 0x0000744f1aeac3c9 pthread_once (libc.so.6 + 0x983c9)
#7 0x0000744f1ddcee2f n/a (libkwin.so.6 + 0x3cee2f)
#8 0x0000744f1b629aa5 n/a (libQt6Core.so.6 + 0x229aa5)
#9 0x0000744f1b6bb619 n/a (libQt6Core.so.6 + 0x2bb619)
#10 0x0000744f1aea6ded n/a (libc.so.6 + 0x92ded)
#11 0x0000744f1af2a0dc n/a (libc.so.6 + 0x1160dc)
Stack trace of thread 3336:
#0 0x0000744f1aea34e9 n/a (libc.so.6 + 0x8f4e9)
#1 0x0000744f1aea6242 pthread_cond_timedwait (libc.so.6 +
0x92242)
#2 0x0000744f1b6bef68
_ZN14QWaitCondition4waitEP6QMutex14QDeadlineTimer (libQt6Core.so.6 + 0x2bef68)
#3 0x0000744f1b6c0161 n/a (libQt6Core.so.6 + 0x2c0161)
#4 0x0000744f1b6bb619 n/a (libQt6Core.so.6 + 0x2bb619)
#5 0x0000744f1aea6ded n/a (libc.so.6 + 0x92ded)
#6 0x0000744f1af2a0dc n/a (libc.so.6 + 0x1160dc)
Stack trace of thread 2929:
#0 0x0000744f1aea34e9 n/a (libc.so.6 + 0x8f4e9)
#1 0x0000744f1aea6552 pthread_cond_clockwait (libc.so.6 +
0x92552)
#2 0x0000744f1ddd3472 n/a (libkwin.so.6 + 0x3d3472)
#3 0x0000744f1ddcea7d n/a (libkwin.so.6 + 0x3cea7d)
#4 0x0000744f1aeac34b n/a (libc.so.6 + 0x9834b)
#5 0x0000744f1aeac3c9 pthread_once (libc.so.6 + 0x983c9)
#6 0x0000744f1ddcee2f n/a (libkwin.so.6 + 0x3cee2f)
#7 0x0000744f1b629aa5 n/a (libQt6Core.so.6 + 0x229aa5)
#8 0x0000744f1b6bb619 n/a (libQt6Core.so.6 + 0x2bb619)
#9 0x0000744f1aea6ded n/a (libc.so.6 + 0x92ded)
#10 0x0000744f1af2a0dc n/a (libc.so.6 + 0x1160dc)
Stack trace of thread 3335:
#0 0x0000744f1aea34e9 n/a (libc.so.6 + 0x8f4e9)
#1 0x0000744f1aea6242 pthread_cond_timedwait (libc.so.6 +
0x92242)
#2 0x0000744f1b6bef68
_ZN14QWaitCondition4waitEP6QMutex14QDeadlineTimer (libQt6Core.so.6 + 0x2bef68)
#3 0x0000744f1b6c0161 n/a (libQt6Core.so.6 + 0x2c0161)
#4 0x0000744f1b6bb619 n/a (libQt6Core.so.6 + 0x2bb619)
#5 0x0000744f1aea6ded n/a (libc.so.6 + 0x92ded)
#6 0x0000744f1af2a0dc n/a (libc.so.6 + 0x1160dc)
Stack trace of thread 2927:
#0 0x0000744f1aea34e9 n/a (libc.so.6 + 0x8f4e9)
#1 0x0000744f1aea5ed9 pthread_cond_wait (libc.so.6 + 0x91ed9)
#2 0x0000744f1b0d5e61 __gthread_cond_wait (libstdc++.so.6 +
0xd5e61)
#3 0x0000744f1ddd3760 n/a (libkwin.so.6 + 0x3d3760)
#4 0x0000744f1ddcea7d n/a (libkwin.so.6 + 0x3cea7d)
#5 0x0000744f1aeac34b n/a (libc.so.6 + 0x9834b)
#6 0x0000744f1aeac3c9 pthread_once (libc.so.6 + 0x983c9)
#7 0x0000744f1ddcee2f n/a (libkwin.so.6 + 0x3cee2f)
#8 0x0000744f1b629aa5 n/a (libQt6Core.so.6 + 0x229aa5)
#9 0x0000744f1b6bb619 n/a (libQt6Core.so.6 + 0x2bb619)
#10 0x0000744f1aea6ded n/a (libc.so.6 + 0x92ded)
#11 0x0000744f1af2a0dc n/a (libc.so.6 + 0x1160dc)
ELF object binary architecture: AMD x86-64
```
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