https://bugs.kde.org/show_bug.cgi?id=393284

--- Comment #9 from kdem...@protonmail.com ---
(In reply to Martin Flöser from comment #8)
> kwin_x11 --replace

Oh, that's a cool trick, thanks. I temporarily re-enabled Fall Apart, then ran
that command of yours in Konsole, then went to Desktop Grid view, dragged a
window from one VD to another, & of course the crash then occurred again...

[kdemeoz@Lappy-XPS15 ~]$ kwin_x11 --replace
Module 'org.kde.kwin.decoration' does not contain a module identifier directive
- it cannot be protected from external registrations.
QXcbConnection: XCB error: 3 (BadWindow), sequence: 2050, resource id:
39845891, major code: 18 (ChangeProperty), minor code: 0
OpenGL vendor string:                   Intel Open Source Technology Center
OpenGL renderer string:                 Mesa DRI Intel(R) Ironlake Mobile 
OpenGL version string:                  2.1 Mesa 18.0.0
OpenGL shading language version string: 1.20
Driver:                                 Intel
GPU class:                              i965
OpenGL version:                         2.1
GLSL version:                           1.20
Mesa version:                           18.0
X server version:                       1.19.6
Linux kernel version:                   4.16.2
Requires strict binding:                yes
GLSL shaders:                           yes
Texture NPOT support:                   yes
Virtual Machine:                        no
kf5.kcoreaddons.desktopparser: Property type "Url" is not a known QVariant
type. Found while parsing property definition for "X-KWin-Video-Url" in
"/usr/share/kservicetypes5/kwineffect.desktop"
QXcbConnection: XCB error: 9 (BadDrawable), sequence: 2227, resource id: 0,
major code: 14 (GetGeometry), minor code: 0
QXcbConnection: XCB error: 9 (BadDrawable), sequence: 2228, resource id: 0,
major code: 14 (GetGeometry), minor code: 0
QXcbConnection: XCB error: 9 (BadDrawable), sequence: 2229, resource id: 0,
major code: 14 (GetGeometry), minor code: 0
QXcbConnection: XCB error: 9 (BadDrawable), sequence: 2231, resource id: 0,
major code: 14 (GetGeometry), minor code: 0
QXcbConnection: XCB error: 9 (BadDrawable), sequence: 2233, resource id: 0,
major code: 14 (GetGeometry), minor code: 0
QXcbConnection: XCB error: 9 (BadDrawable), sequence: 2234, resource id: 0,
major code: 14 (GetGeometry), minor code: 0
QXcbConnection: XCB error: 9 (BadDrawable), sequence: 2237, resource id: 0,
major code: 14 (GetGeometry), minor code: 0
QXcbConnection: XCB error: 9 (BadDrawable), sequence: 2238, resource id: 0,
major code: 14 (GetGeometry), minor code: 0
QXcbConnection: XCB error: 9 (BadDrawable), sequence: 2239, resource id: 0,
major code: 14 (GetGeometry), minor code: 0
QXcbConnection: XCB error: 9 (BadDrawable), sequence: 2241, resource id: 0,
major code: 14 (GetGeometry), minor code: 0
QXcbConnection: XCB error: 9 (BadDrawable), sequence: 2243, resource id: 0,
major code: 14 (GetGeometry), minor code: 0
QXcbConnection: XCB error: 9 (BadDrawable), sequence: 2244, resource id: 0,
major code: 14 (GetGeometry), minor code: 0
trying to show an empty dialog
trying to show an empty dialog
Splitting quads is allowed only in pre-paint calls!
Application::crashHandler() called with signal 6; recent crashes: 1
KCrash: crashing... crashRecursionCounter = 2
KCrash: Application Name = kwin_x11 path = /usr/bin pid = 14594
KCrash: Arguments: /usr/bin/kwin_x11 --replace 
QXcbConnection: XCB error: 3 (BadWindow), sequence: 172, resource id:
130023432, major code: 20 (GetProperty), minor code: 0
Module 'org.kde.kwin.decoration' does not contain a module identifier directive
- it cannot be protected from external registrations.
OpenGL vendor string:                   Intel Open Source Technology Center
OpenGL renderer string:                 Mesa DRI Intel(R) Ironlake Mobile 
OpenGL version string:                  2.1 Mesa 18.0.0
OpenGL shading language version string: 1.20
Driver:                                 Intel
GPU class:                              i965
OpenGL version:                         2.1
GLSL version:                           1.20
Mesa version:                           18.0
X server version:                       1.19.6
Linux kernel version:                   4.16.2
Requires strict binding:                yes
GLSL shaders:                           yes
Texture NPOT support:                   yes
Virtual Machine:                        no
kf5.kcoreaddons.desktopparser: Property type "Url" is not a known QVariant
type. Found while parsing property definition for "X-KWin-Video-Url" in
"/usr/share/kservicetypes5/kwineffect.desktop"
QXcbConnection: XCB error: 9 (BadDrawable), sequence: 2278, resource id: 0,
major code: 14 (GetGeometry), minor code: 0
QXcbConnection: XCB error: 9 (BadDrawable), sequence: 2279, resource id: 0,
major code: 14 (GetGeometry), minor code: 0
QXcbConnection: XCB error: 9 (BadDrawable), sequence: 2280, resource id: 0,
major code: 14 (GetGeometry), minor code: 0
QXcbConnection: XCB error: 9 (BadDrawable), sequence: 2282, resource id: 0,
major code: 14 (GetGeometry), minor code: 0
QXcbConnection: XCB error: 9 (BadDrawable), sequence: 2284, resource id: 0,
major code: 14 (GetGeometry), minor code: 0
QXcbConnection: XCB error: 9 (BadDrawable), sequence: 2285, resource id: 0,
major code: 14 (GetGeometry), minor code: 0
QXcbConnection: XCB error: 9 (BadDrawable), sequence: 2288, resource id: 0,
major code: 14 (GetGeometry), minor code: 0
QXcbConnection: XCB error: 9 (BadDrawable), sequence: 2289, resource id: 0,
major code: 14 (GetGeometry), minor code: 0
QXcbConnection: XCB error: 9 (BadDrawable), sequence: 2290, resource id: 0,
major code: 14 (GetGeometry), minor code: 0
QXcbConnection: XCB error: 9 (BadDrawable), sequence: 2292, resource id: 0,
major code: 14 (GetGeometry), minor code: 0
QXcbConnection: XCB error: 9 (BadDrawable), sequence: 2294, resource id: 0,
major code: 14 (GetGeometry), minor code: 0
QXcbConnection: XCB error: 9 (BadDrawable), sequence: 2295, resource id: 0,
major code: 14 (GetGeometry), minor code: 0
QXcbConnection: XCB error: 3 (BadWindow), sequence: 2436, resource id:
130023427, major code: 18 (ChangeProperty), minor code: 0
trying to show an empty dialog
Aborted (core dumped)

[kdemeoz@Lappy-XPS15 ~]$ qdbus org.kde.kwin /KWin supportInformation
Service 'org.kde.kwin' does not exist.

[kdemeoz@Lappy-XPS15 ~]$ coredumpctl listQXcbConnection: XCB error: 3
(BadWindow), sequence: 25490, resource id: 132120589, major code: 18
(ChangeProperty), minor code: 0



<<in a separate Konsole:>>

[kdemeoz@Lappy-XPS15 ~]$ coredumpctl list
TIME                            PID   UID   GID SIG COREFILE  EXE
<<snipped>>
Tue 2018-04-24 12:31:24 AEST  28591  1000  1000   6 truncated /usr/bin/kwin_x11
Tue 2018-04-24 12:32:11 AEST  30784  1000  1000   6 truncated /usr/bin/kwin_x11
Tue 2018-04-24 15:33:11 AEST  14594  1000  1000   6 truncated /usr/bin/kwin_x11
[kdemeoz@Lappy-XPS15 ~]$ 

[kdemeoz@Lappy-XPS15 ~]$ coredumpctl gdb                            
           PID: 14594 (kwin_x11)
           UID: 1000 (kdemeoz)
           GID: 1000 (kdemeoz)
        Signal: 6 (ABRT)
     Timestamp: Tue 2018-04-24 15:32:50 AEST (2min 17s ago)
  Command Line: kwin_x11 --replace
    Executable: /usr/bin/kwin_x11
 Control Group: /user.slice/user-1000.slice/session-c16.scope
          Unit: session-c16.scope
         Slice: user-1000.slice
       Session: c16
     Owner UID: 1000 (kdemeoz)
       Boot ID: 4d57b850825045aaa73d73195fd923ef
    Machine ID: 3054f65cf0df4fa190579b2f767ba3aa
      Hostname: Lappy-XPS15
       Storage:
/var/lib/systemd/coredump/core.kwin_x11.1000.4d57b850825045aaa73d73195fd923ef.14594.1524547970000000.lz4
(truncated)
       Message: Process 14594 (kwin_x11) of user 1000 dumped core.

                Stack trace of thread 14594:
                #0  0x00007fb8d51e0860 n/a (n/a)

<<snipped>>
Reading symbols from /usr/bin/kwin_x11...(no debugging symbols found)...done.
BFD: warning: /var/tmp/coredump-ip6mEG is truncated: expected core file size >=
2417315840, found: 2147483648
[New LWP 14594]
[New LWP 14596]
[New LWP 14597]
[New LWP 14603]
[New LWP 14614]
[New LWP 14619]
[New LWP 14620]
[New LWP 14735]
Cannot access memory at address 0x7fb8d59960c8
Cannot access memory at address 0x7fb8d59960c0
Failed to read a valid object file image from memory.
Core was generated by `kwin_x11 --replace'.
Program terminated with signal SIGABRT, Aborted.
#0  0x00007fb8d51e0860 in ?? ()
[Current thread is 1 (LWP 14594)]
(gdb) bt
#0  0x00007fb8d51e0860 in ?? ()
Backtrace stopped: Cannot access memory at address 0x7ffd24db89e0
(gdb) q
[kdemeoz@Lappy-XPS15 ~]$

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