https://bugs.kde.org/show_bug.cgi?id=453042
Bug ID: 453042
Summary: kwin_wayland segfault when external usb-c monitors
reconnect from power saving state
Product: kwin
Version: 5.24.4
Platform: Other
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: wayland-generic
Assignee: kwin-bugs-n...@kde.org
Reporter: pub...@rembrandt.dev
Target Milestone: ---
SUMMARY
Two external monitors connected via usb-c to laptop (all 3 displays enabled),
external monitors entered a power saving state / perhaps the lock screen (can't
quite remember if the lock screen was shown), and woke the device with input
followed by a kwin_wayland crash a few seconds later.
Backtrace with debug symbols loaded:
#0 KWaylandServer::OutputDeviceModeV2Interface::size() const
(this=this@entry=0x0) at /usr/include/qt/QtCore/qscopedpointer.h:116
#1 0x00007f69b669fb05 in
KWaylandServer::OutputConfigurationV2InterfacePrivate::kde_output_configuration_v2_mode(QtWaylandServer::kde_output_configuration_v2::Resource*,
wl_resource*, wl_resource*) (this=0x5564409632f0, resource=<optimized out>,
outputdevice=<optimized out>, modeResource=<optimized out>)
at
/usr/src/debug/kwayland-server-5.24.4/src/server/outputconfiguration_v2_interface.cpp:68
#2 0x00007f69b26c7536 in ffi_call_unix64 () at ../src/x86/unix64.S:105
#3 0x00007f69b26c4037 in ffi_call_int (cif=<optimized out>, fn=<optimized
out>, rvalue=<optimized out>, avalue=<optimized out>, closure=<optimized out>)
at ../src/x86/ffi64.c:672
#4 0x00007f69b38fdaf2 in wl_closure_invoke
(closure=closure@entry=0x5564422823a0, target=<optimized out>,
target@entry=0x5564426ad8d0, opcode=opcode@entry=1, data=<optimized out>,
data@entry=0x556441c17b70, flags=<optimized out>) at
../wayland-1.20.0/src/connection.c:1025
#5 0x00007f69b3901e14 in wl_client_connection_data (fd=<optimized out>,
mask=<optimized out>, data=0x556441c17b70) at
../wayland-1.20.0/src/wayland-server.c:437
#6 0x00007f69b390084a in wl_event_loop_dispatch (loop=0x556440587850,
timeout=<optimized out>) at ../wayland-1.20.0/src/event-loop.c:1027
#7 0x00007f69b6689b7b in KWaylandServer::Display::dispatchEvents()
(this=<optimized out>) at
/usr/src/debug/kwayland-server-5.24.4/src/server/display.cpp:114
#8 0x00007f69b497a463 in QtPrivate::QSlotObjectBase::call(QObject*, void**)
(a=0x7ffcacbee420, r=<optimized out>, this=0x5564405a1f30, this=<optimized
out>, r=<optimized out>, a=<optimized out>) at
../../include/QtCore/../../src/corelib/kernel/qobjectdefs_impl.h:398
#9 doActivate<false>(QObject*, int, void**) (sender=0x5564409e65d0,
signal_index=3, argv=0x7ffcacbee420) at kernel/qobject.cpp:3886
#10 0x00007f69b497c4e4 in QSocketNotifier::activated(QSocketDescriptor,
QSocketNotifier::Type, QSocketNotifier::QPrivateSignal)
(this=this@entry=0x5564409e65d0, _t1=..., _t2=<optimized out>, _t3=...) at
.moc/moc_qsocketnotifier.cpp:178
#11 0x00007f69b497cfaf in QSocketNotifier::event(QEvent*) (this=0x5564409e65d0,
e=<optimized out>) at kernel/qsocketnotifier.cpp:302
#12 0x00007f69b54082c6 in QApplicationPrivate::notify_helper(QObject*, QEvent*)
(this=<optimized out>, receiver=0x5564409e65d0, e=0x7ffcacbee560) at
kernel/qapplication.cpp:3637
#13 0x00007f69b49495aa in QCoreApplication::notifyInternal2(QObject*, QEvent*)
(receiver=0x5564409e65d0, event=0x7ffcacbee560) at
kernel/qcoreapplication.cpp:1064
#14 0x00007f69b4994214 in
QEventDispatcherUNIXPrivate::activateSocketNotifiers() (this=0x55644051b0c0) at
kernel/qeventdispatcher_unix.cpp:304
#15 0x00007f69b4995185 in
QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>)
(this=<optimized out>, flags=...) at kernel/qeventdispatcher_unix.cpp:511
#16 0x000055643f87b7e2 in
QUnixEventDispatcherQPA::processEvents(QFlags<QEventLoop::ProcessEventsFlag>)
()
#17 0x00007f69b494188b in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7ffcacbee6f0,
flags=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:69
#18 0x00007f69b494cfd7 in QCoreApplication::exec() () at
../../include/QtCore/../../src/corelib/global/qflags.h:121
#19 0x00007f69b4d1a1d2 in QGuiApplication::exec() () at
kernel/qguiapplication.cpp:1867
#20 0x00007f69b540664a in QApplication::exec() () at
kernel/qapplication.cpp:2829
#21 0x000055643f78a32a in main(int, char**) (argc=<optimized out>,
argv=<optimized out>) at /usr/src/debug/kwin-5.24.4/src/main_wayland.cpp:727
Relevant dmesg output:
[31822.501372] usb 1-5: USB disconnect, device number 7
[31822.501377] usb 1-5.1: USB disconnect, device number 10
[31822.504070] usb 1-5.4: USB disconnect, device number 11
[31822.504189] ti_usb_3410_5052_1 ttyUSB1: TI USB 3410 1 port adapter converter
now disconnected from ttyUSB1
[31822.504208] ti_usb_3410_5052 1-5.4:2.0: device disconnected
[31822.514601] audit: type=1131 audit(1650963725.077:1190): pid=1 uid=0
auid=4294967295 ses=4294967295 msg='unit=hid-recorder comm="systemd"
exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=success'
[31822.613446] usb 1-2: USB disconnect, device number 6
[31822.613450] usb 1-2.4: USB disconnect, device number 8
[31822.613596] ti_usb_3410_5052_1 ttyUSB0: TI USB 3410 1 port adapter converter
now disconnected from ttyUSB0
[31822.613610] ti_usb_3410_5052 1-2.4:2.0: device disconnected
[31822.870412] usb 1-2: new high-speed USB device number 13 using xhci_hcd
[31822.998094] usb 1-2: New USB device found, idVendor=0451, idProduct=8142,
bcdDevice= 1.00
[31822.998097] usb 1-2: New USB device strings: Mfr=0, Product=0,
SerialNumber=1
[31822.998098] usb 1-2: SerialNumber: B30208498DF3
[31822.998709] hub 1-2:1.0: USB hub found
[31822.998725] hub 1-2:1.0: 4 ports detected
[31823.222632] usb 1-5: new high-speed USB device number 14 using xhci_hcd
[31823.348678] usb 1-5: New USB device found, idVendor=0451, idProduct=8142,
bcdDevice= 1.00
[31823.348681] usb 1-5: New USB device strings: Mfr=0, Product=0,
SerialNumber=1
[31823.348682] usb 1-5: SerialNumber: EF09084901C3
[31823.349357] hub 1-5:1.0: USB hub found
[31823.349373] hub 1-5:1.0: 4 ports detected
[31823.412624] usb 1-2.4: new full-speed USB device number 15 using xhci_hcd
[31823.535757] usb 1-2.4: New USB device found, idVendor=0451, idProduct=3410,
bcdDevice= 1.01
[31823.535772] usb 1-2.4: New USB device strings: Mfr=1, Product=2,
SerialNumber=3
[31823.535773] usb 1-2.4: Product: TUSB3410 EECode Ser
[31823.535774] usb 1-2.4: Manufacturer: Texas Instruments
[31823.535775] usb 1-2.4: SerialNumber: 00105330
[31823.540410] ti_usb_3410_5052 1-2.4:1.0: TI USB 3410 1 port adapter converter
detected
[31823.549096] ti_usb_3410_5052 1-2.4:2.0: TI USB 3410 1 port adapter converter
detected
[31823.549195] usb 1-2.4: TI USB 3410 1 port adapter converter now attached to
ttyUSB0
[31823.623670] usb 1-5.1: new full-speed USB device number 16 using xhci_hcd
[31823.751205] usb 1-5.1: New USB device found, idVendor=0451, idProduct=3421,
bcdDevice= 1.00
[31823.751208] usb 1-5.1: New USB device strings: Mfr=1, Product=2,
SerialNumber=3
[31823.751209] usb 1-5.1: Product: Texas Instruments USB Billboard Device
[31823.751210] usb 1-5.1: Manufacturer: Texas Instruments Inc.
[31823.751210] usb 1-5.1: SerialNumber: 28FF5CF903080F42
[31823.786394] hid-generic 0003:0451:3421.001A: hiddev96,hidraw0: USB HID v1.11
Device [Texas Instruments Inc. Texas Instruments USB Billboard Device] on
usb-0000:00:14.0-5.1/input1
[31823.850859] usb 1-5.4: new full-speed USB device number 17 using xhci_hcd
[31823.975050] usb 1-5.4: New USB device found, idVendor=0451, idProduct=3410,
bcdDevice= 1.01
[31823.975054] usb 1-5.4: New USB device strings: Mfr=1, Product=2,
SerialNumber=3
[31823.975055] usb 1-5.4: Product: TUSB3410 EECode Ser
[31823.975056] usb 1-5.4: Manufacturer: Texas Instruments
[31823.975056] usb 1-5.4: SerialNumber: 00000003
[31823.979809] ti_usb_3410_5052 1-5.4:1.0: TI USB 3410 1 port adapter converter
detected
[31823.990185] ti_usb_3410_5052 1-5.4:2.0: TI USB 3410 1 port adapter converter
detected
[31823.990281] usb 1-5.4: TI USB 3410 1 port adapter converter now attached to
ttyUSB1
libKWaylandServer.so.5.24.4[7f69b666c000+a8000]
[31827.426350] Code: 50 58 44 89 60 60 89 68 64 48 89 43 10 48 83 c4 08 5b 5d
41 5c 41 5d c3 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 f3 0f 1e fa <48> 8b 47
10 48 8b 40 58 c3 90 66 90 f3 0f 1e fa 48 8b 47 10 48 8b
[31827.426396] audit: type=1701 audit(1650963729.988:1192): auid=1000 uid=1000
gid=1000 ses=1 pid=1705 comm="kwin_wayland" exe="/usr/bin/kwin_wayland" sig=11
res=1
[31827.455780] audit: type=1334 audit(1650963730.018:1193): prog-id=150 op=LOAD
[31827.455870] audit: type=1334 audit(1650963730.018:1194): prog-id=151 op=LOAD
[31827.455903] audit: type=1334 audit(1650963730.018:1195): prog-id=152 op=LOAD
[31827.456961] audit: type=1130 audit(1650963730.019:1196): pid=1 uid=0
auid=4294967295 ses=4294967295 msg='unit=systemd-coredump@0-207761-0
comm="systemd" exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=?
res=success'
[31828.639128] audit: type=1131 audit(1650963731.201:1197): pid=1 uid=0
auid=4294967295 ses=4294967295 msg='unit=systemd-coredump@0-207761-0
comm="systemd" exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=?
res=success'
STEPS TO REPRODUCE
Definitely not 100% reproducible
1. Connect 2 external usb-c monitors (to separate usb-c ports on the laptop)
2. Wait for monitors to enter power saving states
3. Mouse the mouse / press a key
4. Crash occurs within a few seconds
OBSERVED RESULT
kwin_wayland crashed & restarted
EXPECTED RESULT
Not crashing / handling monitor devices being refreshed in the kernel?
SOFTWARE/OS VERSIONS
Linux/KDE Plasma: Arch Linux
KDE Plasma Version: 5.24.4
KDE Frameworks Version: 5.93.0
Qt Version: 5.15.3
Kernel Version: 5.17.4-zen1 (64bit)
ADDITIONAL INFORMATION
Laptop: Thinkpad P15s Gen 1
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