https://bugs.kde.org/show_bug.cgi?id=439020
Bug ID: 439020
Summary: Choosing "New Desktop" from the windows operations
menu crashes kwin
Product: kwin
Version: git master
Platform: Other
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: platform-x11-standalone
Assignee: kwin-bugs-n...@kde.org
Reporter: o...@geek.co.il
Target Milestone: ---
I'm using Neon developer edition with DBus integration turned on.
SUMMARY
Plasma crahes when opening the window operations menu and selecting "Move To
Desktop" -> "New Desktop".
STEPS TO REPRODUCE
1. Start a kwin X11 session.
2. Start an application
3. Open the window operations menu, select "Move To Desktop" then select "New
Desktop"
OBSERVED RESULT
The entire desktop session crashes - all windows disappear, there's a black
screen for a few seconds, after which kwin restarts and shows the windows that
were opened before the crash. Looking in the "Move To Desktop" window again, I
can see that a new desktop has been created and I can now move the window
there.
EXPECTED RESULT
The window should be moved to the newly created desktop.
SOFTWARE/OS VERSIONS
KDE Plasma Version: 5.22.80
KDE Frameworks Version: 5.84.0
Qt Version: 5.15.3
ADDITIONAL INFORMATION
This seems very very similar to bug #438149 (to the point where I basically
copied all the text and just modified it a bit for this X11 crash), but the
stack traces I get look very much different.
Here's what apport-retrace found for me as a possible cause for the crash:
---8<---
Thread 1 (Thread 0x7f115364ed80 (LWP 8832)):
#0 __GI___pthread_sigmask (how=1, newmask=<optimized out>, oldmask=0x0) at
pthread_sigmask.c:44
local_newmask = {__val = {139712506051280, 32, 2, 9223372036854775822,
0 <repeats 12 times>}}
result = 0
#1 0x00007f1158b5827d in __GI___sigprocmask (how=<optimized out>,
set=<optimized out>, oset=<optimized out>) at
../sysdeps/unix/sysv/linux/sigprocmask.c:25
result = <optimized out>
#2 0x00007f115a4b350f in KCrash::setCrashHandler(void (*)(int)) () at
/lib/x86_64-linux-gnu/libKF5Crash.so.5
#3 0x00007f115a4b41f6 in KCrash::defaultCrashHandler(int) () at
/lib/x86_64-linux-gnu/libKF5Crash.so.5
#4 0x00007f1158b58040 in <signal handler called> () at
/lib/x86_64-linux-gnu/libc.so.6
#5 KWin::Workspace::sendClientToDesktop(KWin::AbstractClient*, int, bool)
(this=this@entry=0x55da33ac7180, c=0x0, desk=desk@entry=7,
dont_activate=dont_activate@entry=false) at ./src/workspace.cpp:1273
old_desktop = <optimized out>
was_on_desktop = <optimized out>
transients_stacking_order =
{<QListSpecialMethods<KWin::AbstractClient*>> = {<No data fields>}, {p =
{static shared_null = {ref = {atomic = {_q_value = {<std::__atomic_base<int>> =
{static _S_alignment = 4, _M_i = -1}, static is_always_lock_free = true}}},
alloc = 0, begin = 0, end = 0, array = {0x0}}, d = 0x55da33695cb0}, d =
0x55da33695cb0}}
#6 0x00007f115a6ffc98 in KWin::UserActionsMenu::slotSendToDesktop(QAction*)
(this=0x55da33838ec0, action=<optimized out>) at ./src/useractions.cpp:733
ok = true
desk = 7
ws = 0x55da33ac7180
vds = <optimized out>
---8<---
The full crash file is available at
http://code.geek.co.il/dumps/2021-06-22-_usr_bin_kwin_x11.1000.crash
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