https://bugs.kde.org/show_bug.cgi?id=452988
Bug ID: 452988
Summary: kwin_wayland segfaults when laptop screen is closed,
turned off, and then reopened
Product: kwin
Version: git master
Platform: openSUSE RPMs
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: wayland-generic
Assignee: kwin-bugs-n...@kde.org
Reporter: lbeltr...@kde.org
Target Milestone: ---
Created attachment 148356
--> https://bugs.kde.org/attachment.cgi?id=148356&action=edit
Backtrace from coredumpctl
SUMMARY
When I close my laptop screen (regardless if the machine suspends or not), if
the laptop screen is turned off, kwin_wayland will crash once the screen is
opened again and the screen is turned on again. This also happens if the screen
is simply turned off for energy saving.
A look at the backtrace (attached) suggests that it attempts to access a member
of an object that's however null.
STEPS TO REPRODUCE
1. Close laptop screen
2. Wait until laptop suspends
3. Open laptop screen
OBSERVED RESULT
kwin_wayland crashes.
EXPECTED RESULT
kwin_wayland should not crash.
SOFTWARE/OS VERSIONS
KDE Plasma Version: latest git master
KDE Frameworks Version: latest git master
Qt Version: Qt 5.15.3 + KDE patches
ADDITIONAL INFORMATION
Test machine: Lenovo Thinkpad T470, with latest stable Mesa and kernel 5.17.3.
Excerpt from gdb debug session:
Core was generated by `/usr/bin/kwin_wayland --wayland-fd 7 --socket wayland-0
--xwayland-fd 8 --xwayl'.
Program terminated with signal SIGSEGV, Segmentation fault.
#0 KWin::LockScreenFilter::pointerEvent (this=<optimized out>,
event=0x7ffe50e6bd80, nativeButton=0)
at
/usr/src/debug/kwin5-5.24.80git.20220423T142940~8455427dbc-ku.78.1.x86_64/src/input.cpp:354
354 if (window->isClient() && window->isLockScreen()) {
[Current thread is 1 (Thread 0x7f03e7d45980 (LWP 25016))]
(gdb) print window
$1 = (KWin::Window *) 0x0
(gdb)
--
You are receiving this mail because:
You are watching all bug changes.
