https://bugs.kde.org/show_bug.cgi?id=504403

Michael Wang <[email protected]> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         Resolution|BACKTRACE                   |---
             Status|NEEDSINFO                   |REPORTED

--- Comment #3 from Michael Wang <[email protected]> ---
coredumpctl gdb output

           PID: 1041 (kwin_wayland)
           UID: 1000 (user)
           GID: 1000 (user)
        Signal: 6 (ABRT)
     Timestamp: Wed 2025-06-11 08:58:10 UTC (11min 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_DGNcPj --xwayland
    Executable: /usr/bin/kwin_wayland
 Control Group:
/user.slice/user-1000.slice/[email protected]/session.slice/plasma-kwin_wayland.service
          Unit: [email protected]
     User Unit: plasma-kwin_wayland.service
         Slice: user-1000.slice
     Owner UID: 1000 (user)
       Boot ID: 31124191016c4deaa60a3a6594132ee0
    Machine ID: 03d45190f58e4b8a8a818e9c34811fbd
      Hostname: plasma
       Storage:
/var/lib/systemd/coredump/core.kwin_wayland.1000.31124191016c4deaa60a3a6594132ee0.1041.1749632290000000.zst
(present)
  Size on Disk: 4.9M
       Message: Process 1041 (kwin_wayland) of user 1000 dumped core.

                Stack trace of thread 1041:
                #0  0x00007fe7cf2a774c n/a (libc.so.6 + 0x9774c)
                #1  0x00007fe7cf24ddc0 raise (libc.so.6 + 0x3ddc0)
                #2  0x00007fe7d2c29d47 _ZN6KCrash19defaultCrashHandlerEi
(libKF6Crash.so.6 + 0x7d47)
                #3  0x00007fe7cf24def0 n/a (libc.so.6 + 0x3def0)
                #4  0x00007fe7cf2a774c n/a (libc.so.6 + 0x9774c)
                #5  0x00007fe7cf24ddc0 raise (libc.so.6 + 0x3ddc0)
                #6  0x00007fe7cf23557a abort (libc.so.6 + 0x2557a)
                #7  0x00007fe7c1627f36 n/a (libgallium-25.1.3-arch1.3.so +
0x27f36)
                #8  0x00007fe7c278431c n/a (libgallium-25.1.3-arch1.3.so +
0x118431c)
                #9  0x00007fe7c1d52558 n/a (libgallium-25.1.3-arch1.3.so +
0x752558)
                #10 0x00007fe7c16cf12e n/a (libgallium-25.1.3-arch1.3.so +
0xcf12e)
                #11 0x00007fe7d2877e65 n/a (libkwin.so.6 + 0x477e65)
                #12 0x00007fe7d2879932 n/a (libkwin.so.6 + 0x479932)
                #13 0x00007fe7d287ad56 n/a (libkwin.so.6 + 0x47ad56)
                #14 0x00007fe7d287b595 n/a (libkwin.so.6 + 0x47b595)
                #15 0x00007fe7d287b769 n/a (libkwin.so.6 + 0x47b769)
                #16 0x00007fe7d287c061 n/a (libkwin.so.6 + 0x47c061)
                #17 0x00007fe7d287c44c n/a (libkwin.so.6 + 0x47c44c)
                #18 0x00007fe7d288e584 n/a (libkwin.so.6 + 0x48e584)
                #19 0x00007fe7d288f393 n/a (libkwin.so.6 + 0x48f393)
                #20 0x00007fe7d288f69a n/a (libkwin.so.6 + 0x48f69a)
                #21 0x00007fe7d2890ca9 n/a (libkwin.so.6 + 0x490ca9)
                #22 0x00007fe7d2882e79 n/a (libkwin.so.6 + 0x482e79)
                #23 0x00007fe7d2883285 n/a (libkwin.so.6 + 0x483285)
                #24 0x00007fe7d288319e n/a (libkwin.so.6 + 0x48319e)
                #25 0x00007fe7d2883285 n/a (libkwin.so.6 + 0x483285)
                #26 0x00007fe7d2883285 n/a (libkwin.so.6 + 0x483285)
                #27 0x00007fe7d2883285 n/a (libkwin.so.6 + 0x483285)
                #28 0x00007fe7d2883285 n/a (libkwin.so.6 + 0x483285)
                #29 0x00007fe7d28874a3 n/a (libkwin.so.6 + 0x4874a3)
                #30 0x00007fe7d285f3de
_ZN4KWin10DrmBackend18applyOutputChangesERKNS_19OutputConfigurationE
(libkwin.so.6 + 0x45f3de)
                #31 0x00007fe7d27e24f6
_ZN4KWin9Workspace24applyOutputConfigurationERKNS_19OutputConfigurationERKSt8optionalI5QListIPNS_6OutputEEE
(libkwin.so.6 + 0x3e24f6)
                #32 0x00007fe7d27e2ec2
_ZN4KWin9Workspace25updateOutputConfigurationEv (libkwin.so.6 + 0x3e2ec2)
                #33 0x00007fe7d27e37c0
_ZN4KWin9Workspace31slotOutputBackendOutputsQueriedEv (libkwin.so.6 + 0x3e37c0)
                #34 0x00007fe7d27d864b _ZN4KWin9Workspace4initEv (libkwin.so.6
+ 0x3d864b)
                #35 0x00007fe7d268b40f _ZN4KWin11Application15createWorkspaceEv
(libkwin.so.6 + 0x28b40f)
                #36 0x00005601529e52dc n/a (/usr/bin/kwin_wayland + 0x4e2dc)
                #37 0x00005601529d7503 n/a (/usr/bin/kwin_wayland + 0x40503)
                #38 0x00007fe7cf2376b5 n/a (libc.so.6 + 0x276b5)
                #39 0x00007fe7cf237769 __libc_start_main (libc.so.6 + 0x27769)
                #40 0x00005601529ddb45 n/a (/usr/bin/kwin_wayland + 0x46b45)

                Stack trace of thread 1053:
                #0  0x00007fe7cf2ade22 n/a (libc.so.6 + 0x9de22)
                #1  0x00007fe7cf2a1fda n/a (libc.so.6 + 0x91fda)
                #2  0x00007fe7cf2a264c n/a (libc.so.6 + 0x9264c)
                #3  0x00007fe7cf2a4d1e pthread_cond_wait (libc.so.6 + 0x94d1e)
                #4  0x00007fe7cf4daaa1
_Z19__gthread_cond_waitP14pthread_cond_tP15pthread_mutex_t (libstdc++.so.6 +
0xdaaa1)
                #5  0x00007fe7d2869bc1 n/a (libkwin.so.6 + 0x469bc1)
                #6  0x00007fe7d286a0da n/a (libkwin.so.6 + 0x46a0da)
                #7  0x00007fe7d2864676 n/a (libkwin.so.6 + 0x464676)
                #8  0x00007fe7cf2aacb4 n/a (libc.so.6 + 0x9acb4)
                #9  0x00007fe7cf2aad29 pthread_once (libc.so.6 + 0x9ad29)
                #10 0x00007fe7d286515f n/a (libkwin.so.6 + 0x46515f)
                #11 0x00007fe7cfa87f55 n/a (libQt6Core.so.6 + 0x287f55)
                #12 0x00007fe7cfb1ee69 n/a (libQt6Core.so.6 + 0x31ee69)
                #13 0x00007fe7cf2a57eb n/a (libc.so.6 + 0x957eb)
                #14 0x00007fe7cf32918c n/a (libc.so.6 + 0x11918c)

                Stack trace of thread 1059:
                #0  0x00007fe7cf2ade22 n/a (libc.so.6 + 0x9de22)
                #1  0x00007fe7cf2a1fda n/a (libc.so.6 + 0x91fda)
                #2  0x00007fe7cf2a264c n/a (libc.so.6 + 0x9264c)
                #3  0x00007fe7cf2a4d1e pthread_cond_wait (libc.so.6 + 0x94d1e)
                #4  0x00007fe7cf4daaa1
_Z19__gthread_cond_waitP14pthread_cond_tP15pthread_mutex_t (libstdc++.so.6 +
0xdaaa1)
                #5  0x00007fe7d2869bc1 n/a (libkwin.so.6 + 0x469bc1)
                #6  0x00007fe7d286a0da n/a (libkwin.so.6 + 0x46a0da)
                #7  0x00007fe7d2864676 n/a (libkwin.so.6 + 0x464676)
                #8  0x00007fe7cf2aacb4 n/a (libc.so.6 + 0x9acb4)
                #9  0x00007fe7cf2aad29 pthread_once (libc.so.6 + 0x9ad29)
                #10 0x00007fe7d286515f n/a (libkwin.so.6 + 0x46515f)
                #11 0x00007fe7cfa87f55 n/a (libQt6Core.so.6 + 0x287f55)
                #12 0x00007fe7cfb1ee69 n/a (libQt6Core.so.6 + 0x31ee69)
                #13 0x00007fe7cf2a57eb n/a (libc.so.6 + 0x957eb)
                #14 0x00007fe7cf32918c n/a (libc.so.6 + 0x11918c)

                Stack trace of thread 1052:
                #0  0x00007fe7cf2ade22 n/a (libc.so.6 + 0x9de22)
                #1  0x00007fe7cf2a1fda n/a (libc.so.6 + 0x91fda)
                #2  0x00007fe7cf2a264c n/a (libc.so.6 + 0x9264c)
                #3  0x00007fe7cf2a4d1e pthread_cond_wait (libc.so.6 + 0x94d1e)
                #4  0x00007fe7c1b5fc5e n/a (libgallium-25.1.3-arch1.3.so +
0x55fc5e)
                #5  0x00007fe7c1b1a23d n/a (libgallium-25.1.3-arch1.3.so +
0x51a23d)
                #6  0x00007fe7c1b5fb8d n/a (libgallium-25.1.3-arch1.3.so +
0x55fb8d)
                #7  0x00007fe7cf2a57eb n/a (libc.so.6 + 0x957eb)
                #8  0x00007fe7cf32918c n/a (libc.so.6 + 0x11918c)

                Stack trace of thread 1062:
                #0  0x00007fe7cf2ade22 n/a (libc.so.6 + 0x9de22)
                #1  0x00007fe7cf2a1fda n/a (libc.so.6 + 0x91fda)
                #2  0x00007fe7cf2a264c n/a (libc.so.6 + 0x9264c)
                #3  0x00007fe7cf2a4d1e pthread_cond_wait (libc.so.6 + 0x94d1e)
                #4  0x00007fe7c1b5fc5e n/a (libgallium-25.1.3-arch1.3.so +
0x55fc5e)
                #5  0x00007fe7c1e47fd0 n/a (libgallium-25.1.3-arch1.3.so +
0x847fd0)
                #6  0x00007fe7c1b5fb8d n/a (libgallium-25.1.3-arch1.3.so +
0x55fb8d)
                #7  0x00007fe7cf2a57eb n/a (libc.so.6 + 0x957eb)
                #8  0x00007fe7cf32918c n/a (libc.so.6 + 0x11918c)

                Stack trace of thread 1064:
                #0  0x00007fe7cf2ade22 n/a (libc.so.6 + 0x9de22)
                #1  0x00007fe7cf2a1fda n/a (libc.so.6 + 0x91fda)
                #2  0x00007fe7cf2a264c n/a (libc.so.6 + 0x9264c)
                #3  0x00007fe7cf2a4d1e pthread_cond_wait (libc.so.6 + 0x94d1e)
                #4  0x00007fe7c1b5fc5e n/a (libgallium-25.1.3-arch1.3.so +
0x55fc5e)
                #5  0x00007fe7c1e47fd0 n/a (libgallium-25.1.3-arch1.3.so +
0x847fd0)
                #6  0x00007fe7c1b5fb8d n/a (libgallium-25.1.3-arch1.3.so +
0x55fb8d)
                #7  0x00007fe7cf2a57eb n/a (libc.so.6 + 0x957eb)
                #8  0x00007fe7cf32918c n/a (libc.so.6 + 0x11918c)

                Stack trace of thread 1065:
                #0  0x00007fe7cf2ade22 n/a (libc.so.6 + 0x9de22)
                #1  0x00007fe7cf2a1fda n/a (libc.so.6 + 0x91fda)
                #2  0x00007fe7cf2a264c n/a (libc.so.6 + 0x9264c)
                #3  0x00007fe7cf2a4d1e pthread_cond_wait (libc.so.6 + 0x94d1e)
                #4  0x00007fe7c1b5fc5e n/a (libgallium-25.1.3-arch1.3.so +
0x55fc5e)
                #5  0x00007fe7c1e47fd0 n/a (libgallium-25.1.3-arch1.3.so +
0x847fd0)
                #6  0x00007fe7c1b5fb8d n/a (libgallium-25.1.3-arch1.3.so +
0x55fb8d)
                #7  0x00007fe7cf2a57eb n/a (libc.so.6 + 0x957eb)
                #8  0x00007fe7cf32918c n/a (libc.so.6 + 0x11918c)

                Stack trace of thread 1068:
                #0  0x00007fe7cf2ade22 n/a (libc.so.6 + 0x9de22)
                #1  0x00007fe7cf2a1fda n/a (libc.so.6 + 0x91fda)
                #2  0x00007fe7cf2a264c n/a (libc.so.6 + 0x9264c)
                #3  0x00007fe7cf2a4d1e pthread_cond_wait (libc.so.6 + 0x94d1e)
                #4  0x00007fe7c1b5fc5e n/a (libgallium-25.1.3-arch1.3.so +
0x55fc5e)
                #5  0x00007fe7c1e4378d n/a (libgallium-25.1.3-arch1.3.so +
0x84378d)
                #6  0x00007fe7c1b5fb8d n/a (libgallium-25.1.3-arch1.3.so +
0x55fb8d)
                #7  0x00007fe7cf2a57eb n/a (libc.so.6 + 0x957eb)
                #8  0x00007fe7cf32918c n/a (libc.so.6 + 0x11918c)

                Stack trace of thread 1074:
                #0  0x00007fe7cf2ade22 n/a (libc.so.6 + 0x9de22)
                #1  0x00007fe7cf2a1fda n/a (libc.so.6 + 0x91fda)
                #2  0x00007fe7cf2a264c n/a (libc.so.6 + 0x9264c)
                #3  0x00007fe7cf2a4d1e pthread_cond_wait (libc.so.6 + 0x94d1e)
                #4  0x00007fe7c1b5fc5e n/a (libgallium-25.1.3-arch1.3.so +
0x55fc5e)
                #5  0x00007fe7c1b1a23d n/a (libgallium-25.1.3-arch1.3.so +
0x51a23d)
                #6  0x00007fe7c1b5fb8d n/a (libgallium-25.1.3-arch1.3.so +
0x55fb8d)
                #7  0x00007fe7cf2a57eb n/a (libc.so.6 + 0x957eb)
                #8  0x00007fe7cf32918c n/a (libc.so.6 + 0x11918c)

                Stack trace of thread 1051:
                #0  0x00007fe7cf2ade22 n/a (libc.so.6 + 0x9de22)
                #1  0x00007fe7cf2a1fda n/a (libc.so.6 + 0x91fda)
                #2  0x00007fe7cf2a264c n/a (libc.so.6 + 0x9264c)
                #3  0x00007fe7cf2a4d1e pthread_cond_wait (libc.so.6 + 0x94d1e)
                #4  0x00007fe7c1b5fc5e n/a (libgallium-25.1.3-arch1.3.so +
0x55fc5e)
                #5  0x00007fe7c1b1a23d n/a (libgallium-25.1.3-arch1.3.so +
0x51a23d)
                #6  0x00007fe7c1b5fb8d n/a (libgallium-25.1.3-arch1.3.so +
0x55fb8d)
                #7  0x00007fe7cf2a57eb n/a (libc.so.6 + 0x957eb)
                #8  0x00007fe7cf32918c n/a (libc.so.6 + 0x11918c)

                Stack trace of thread 1060:
                #0  0x00007fe7cf2ade22 n/a (libc.so.6 + 0x9de22)
                #1  0x00007fe7cf2a1fda n/a (libc.so.6 + 0x91fda)
                #2  0x00007fe7cf2a2024 n/a (libc.so.6 + 0x92024)
                #3  0x00007fe7cf31c5a6 ppoll (libc.so.6 + 0x10c5a6)
                #4  0x00007fe7ce47ae04 n/a (libglib-2.0.so.0 + 0x5fe04)
                #5  0x00007fe7ce47aee5 g_main_context_iteration
(libglib-2.0.so.0 + 0x5fee5)
                #6  0x00007fe7cfc3c602
_ZN20QEventDispatcherGlib13processEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE
(libQt6Core.so.6 + 0x43c602)
                #7  0x00007fe7cf9744b6
_ZN10QEventLoop4execE6QFlagsINS_17ProcessEventsFlagEE (libQt6Core.so.6 +
0x1744b6)
                #8  0x00007fe7cfa8e054 _ZN7QThread3runEv (libQt6Core.so.6 +
0x28e054)
                #9  0x00007fe7cfb1ee69 n/a (libQt6Core.so.6 + 0x31ee69)
                #10 0x00007fe7cf2a57eb n/a (libc.so.6 + 0x957eb)
                #11 0x00007fe7cf32918c n/a (libc.so.6 + 0x11918c)

                Stack trace of thread 1048:
                #0  0x00007fe7cf2ade22 n/a (libc.so.6 + 0x9de22)
                #1  0x00007fe7cf2a1fda n/a (libc.so.6 + 0x91fda)
                #2  0x00007fe7cf2a2024 n/a (libc.so.6 + 0x92024)
                #3  0x00007fe7cf31c5a6 ppoll (libc.so.6 + 0x10c5a6)
                #4  0x00007fe7ce47ae04 n/a (libglib-2.0.so.0 + 0x5fe04)
                #5  0x00007fe7ce47aee5 g_main_context_iteration
(libglib-2.0.so.0 + 0x5fee5)
                #6  0x00007fe7cfc3c5e2
_ZN20QEventDispatcherGlib13processEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE
(libQt6Core.so.6 + 0x43c5e2)
                #7  0x00007fe7cf9744b6
_ZN10QEventLoop4execE6QFlagsINS_17ProcessEventsFlagEE (libQt6Core.so.6 +
0x1744b6)
                #8  0x00007fe7cfa873c6 _ZN7QThread4execEv (libQt6Core.so.6 +
0x2873c6)
                #9  0x00007fe7d0a1fdae n/a (libQt6DBus.so.6 + 0x37dae)
                #10 0x00007fe7cfb1ee69 n/a (libQt6Core.so.6 + 0x31ee69)
                #11 0x00007fe7cf2a57eb n/a (libc.so.6 + 0x957eb)
                #12 0x00007fe7cf32918c n/a (libc.so.6 + 0x11918c)

                Stack trace of thread 1067:
                #0  0x00007fe7cf2ade22 n/a (libc.so.6 + 0x9de22)
                #1  0x00007fe7cf2a1fda n/a (libc.so.6 + 0x91fda)
                #2  0x00007fe7cf2a264c n/a (libc.so.6 + 0x9264c)
                #3  0x00007fe7cf2a4d1e pthread_cond_wait (libc.so.6 + 0x94d1e)
                #4  0x00007fe7c1b5fc5e n/a (libgallium-25.1.3-arch1.3.so +
0x55fc5e)
                #5  0x00007fe7c1e4378d n/a (libgallium-25.1.3-arch1.3.so +
0x84378d)
                #6  0x00007fe7c1b5fb8d n/a (libgallium-25.1.3-arch1.3.so +
0x55fb8d)
                #7  0x00007fe7cf2a57eb n/a (libc.so.6 + 0x957eb)
                #8  0x00007fe7cf32918c n/a (libc.so.6 + 0x11918c)

                Stack trace of thread 1063:
                #0  0x00007fe7cf2ade22 n/a (libc.so.6 + 0x9de22)
                #1  0x00007fe7cf2a1fda n/a (libc.so.6 + 0x91fda)
                #2  0x00007fe7cf2a264c n/a (libc.so.6 + 0x9264c)
                #3  0x00007fe7cf2a4d1e pthread_cond_wait (libc.so.6 + 0x94d1e)
                #4  0x00007fe7c1b5fc5e n/a (libgallium-25.1.3-arch1.3.so +
0x55fc5e)
                #5  0x00007fe7c1e47fd0 n/a (libgallium-25.1.3-arch1.3.so +
0x847fd0)
                #6  0x00007fe7c1b5fb8d n/a (libgallium-25.1.3-arch1.3.so +
0x55fb8d)
                #7  0x00007fe7cf2a57eb n/a (libc.so.6 + 0x957eb)
                #8  0x00007fe7cf32918c n/a (libc.so.6 + 0x11918c)

                Stack trace of thread 1070:
                #0  0x00007fe7cf2ade22 n/a (libc.so.6 + 0x9de22)
                #1  0x00007fe7cf2a1fda n/a (libc.so.6 + 0x91fda)
                #2  0x00007fe7cf2a264c n/a (libc.so.6 + 0x9264c)
                #3  0x00007fe7cf2a4d1e pthread_cond_wait (libc.so.6 + 0x94d1e)
                #4  0x00007fe7c1b5fc5e n/a (libgallium-25.1.3-arch1.3.so +
0x55fc5e)
                #5  0x00007fe7c1b1a23d n/a (libgallium-25.1.3-arch1.3.so +
0x51a23d)
                #6  0x00007fe7c1b5fb8d n/a (libgallium-25.1.3-arch1.3.so +
0x55fb8d)
                #7  0x00007fe7cf2a57eb n/a (libc.so.6 + 0x957eb)
                #8  0x00007fe7cf32918c n/a (libc.so.6 + 0x11918c)

                Stack trace of thread 1073:
                #0  0x00007fe7cf2ade22 n/a (libc.so.6 + 0x9de22)
                #1  0x00007fe7cf2a1fda n/a (libc.so.6 + 0x91fda)
                #2  0x00007fe7cf2a264c n/a (libc.so.6 + 0x9264c)
                #3  0x00007fe7cf2a4d1e pthread_cond_wait (libc.so.6 + 0x94d1e)
                #4  0x00007fe7c1b5fc5e n/a (libgallium-25.1.3-arch1.3.so +
0x55fc5e)
                #5  0x00007fe7c1b1a23d n/a (libgallium-25.1.3-arch1.3.so +
0x51a23d)
                #6  0x00007fe7c1b5fb8d n/a (libgallium-25.1.3-arch1.3.so +
0x55fb8d)
                #7  0x00007fe7cf2a57eb n/a (libc.so.6 + 0x957eb)
                #8  0x00007fe7cf32918c n/a (libc.so.6 + 0x11918c)

                Stack trace of thread 1066:
                #0  0x00007fe7cf2ade22 n/a (libc.so.6 + 0x9de22)
                #1  0x00007fe7cf2a1fda n/a (libc.so.6 + 0x91fda)
                #2  0x00007fe7cf2a264c n/a (libc.so.6 + 0x9264c)
                #3  0x00007fe7cf2a4d1e pthread_cond_wait (libc.so.6 + 0x94d1e)
                #4  0x00007fe7c1b5fc5e n/a (libgallium-25.1.3-arch1.3.so +
0x55fc5e)
                #5  0x00007fe7c1e4378d n/a (libgallium-25.1.3-arch1.3.so +
0x84378d)
                #6  0x00007fe7c1b5fb8d n/a (libgallium-25.1.3-arch1.3.so +
0x55fb8d)
                #7  0x00007fe7cf2a57eb n/a (libc.so.6 + 0x957eb)
                #8  0x00007fe7cf32918c n/a (libc.so.6 + 0x11918c)

                Stack trace of thread 1069:
                #0  0x00007fe7cf2ade22 n/a (libc.so.6 + 0x9de22)
                #1  0x00007fe7cf2a1fda n/a (libc.so.6 + 0x91fda)
                #2  0x00007fe7cf2a264c n/a (libc.so.6 + 0x9264c)
                #3  0x00007fe7cf2a4d1e pthread_cond_wait (libc.so.6 + 0x94d1e)
                #4  0x00007fe7c1b5fc5e n/a (libgallium-25.1.3-arch1.3.so +
0x55fc5e)
                #5  0x00007fe7c1e4378d n/a (libgallium-25.1.3-arch1.3.so +
0x84378d)
                #6  0x00007fe7c1b5fb8d n/a (libgallium-25.1.3-arch1.3.so +
0x55fb8d)
                #7  0x00007fe7cf2a57eb n/a (libc.so.6 + 0x957eb)
                #8  0x00007fe7cf32918c n/a (libc.so.6 + 0x11918c)
                ELF object binary architecture: AMD x86-64

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Reading symbols from /usr/bin/kwin_wayland...
Reading symbols from /usr/lib/debug/usr/bin/kwin_wayland.debug...

warning: Can't open file /memfd:lp_dma_buf (deleted) during file-backed mapping
note processing

warning: Can't open file anon_inode:i915.gem during file-backed mapping note
processing
[New LWP 1041]
[New LWP 1053]
[New LWP 1059]
[New LWP 1052]
[New LWP 1062]
[New LWP 1064]
[New LWP 1065]
[New LWP 1068]
[New LWP 1074]
[New LWP 1051]
[New LWP 1060]
[New LWP 1048]
[New LWP 1067]
[New LWP 1063]
[New LWP 1070]
[New LWP 1073]
[New LWP 1066]
[New LWP 1069]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/usr/lib/libthread_db.so.1".
Core was generated by `/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_DGNcPj --xwayland'.
Program terminated with signal SIGABRT, Aborted.
#0  __pthread_kill_implementation (threadid=<optimized out>,
signo=signo@entry=6, no_tid=no_tid@entry=0)
    at pthread_kill.c:44
44            return INTERNAL_SYSCALL_ERROR_P (ret) ? INTERNAL_SYSCALL_ERRNO
(ret) : 0;
[Current thread is 1 (Thread 0x7fe7c98a9a40 (LWP 1041))]
Function(s) ^std::(move|forward|as_const|(__)?addressof) will be skipped when
stepping.
Function(s) ^std::(shared|unique)_ptr<.*>::(get|operator) will be skipped when
stepping.
Function(s)
^std::(basic_string|vector|array|deque|(forward_)?list|(unordered_|flat_)?(multi)?(map|set)|span)<.*>::(c?r?(begin|end)|front|back|data|size|empty)
will be skipped when stepping.
Function(s) ^std::(basic_string|vector|array|deque|span)<.*>::operator.] will
be skipped when stepping.

gdb backtrace

(gdb) bt
#0  __pthread_kill_implementation (threadid=<optimized out>,
signo=signo@entry=6, no_tid=no_tid@entry=0)
    at pthread_kill.c:44
#1  0x00007fe7cf2a7813 in __pthread_kill_internal (threadid=<optimized out>,
signo=6) at pthread_kill.c:89
#2  0x00007fe7cf24ddc0 in __GI_raise (sig=6) at ../sysdeps/posix/raise.c:26
#3  0x00007fe7d2c29d47 in KCrash::defaultCrashHandler(int) () from
/usr/lib/libKF6Crash.so.6
#4  <signal handler called>
#5  __pthread_kill_implementation (threadid=<optimized out>,
signo=signo@entry=6, no_tid=no_tid@entry=0)
    at pthread_kill.c:44
#6  0x00007fe7cf2a7813 in __pthread_kill_internal (threadid=<optimized out>,
signo=6) at pthread_kill.c:89
#7  0x00007fe7cf24ddc0 in __GI_raise (sig=sig@entry=6) at
../sysdeps/posix/raise.c:26
#8  0x00007fe7cf23557a in __GI_abort () at abort.c:73
#9  0x00007fe7c1627f36 in _iris_batch_flush () at
../mesa-25.1.3/src/gallium/drivers/iris/iris_batch.c:1012
#10 0x00007fe7c278431c in iris_fence_flush () at
../mesa-25.1.3/src/gallium/drivers/iris/iris_fence.c:266
#11 0x00007fe7c1d52558 in tc_flush () at
../mesa-25.1.3/src/gallium/auxiliary/util/u_threaded_context.c:3667
#12 0x00007fe7c16cf12e in st_flush () at
../mesa-25.1.3/src/mesa/state_tracker/st_cb_flush.c:63
#13 st_glFlush () at ../mesa-25.1.3/src/mesa/state_tracker/st_cb_flush.c:99
#14 0x00007fe7d2877e65 in KWin::EglGbmLayerSurface::importWithEgl
(this=this@entry=0x56017a103558, 
    surface=surface@entry=0x56017a28fdf0, sourceBuffer=<optimized out>,
readFence=..., frame=frame@entry=0x0, 
    damagedRegion=...) at
/usr/src/debug/kwin/kwin-6.3.5/src/backends/drm/drm_egl_layer_surface.cpp:689
#15 0x00007fe7d2879932 in KWin::EglGbmLayerSurface::importBuffer
(this=this@entry=0x56017a103558, 
    surface=surface@entry=0x56017a28fdf0, slot=slot@entry=0x56017a54ef10,
readFence=..., frame=frame@entry=0x0, 
    damagedRegion=...) at
/usr/src/debug/kwin/kwin-6.3.5/src/backends/drm/drm_egl_layer_surface.cpp:611
#16 0x00007fe7d287ad56 in KWin::EglGbmLayerSurface::doRenderTestBuffer
(this=0x56017a103558, 
    surface=0x56017a28fdf0) at
/usr/src/debug/kwin/kwin-6.3.5/src/backends/drm/drm_egl_layer_surface.cpp:597
#17 KWin::EglGbmLayerSurface::createSurface (this=0x56017a103558, size=...,
format=<optimized out>, modifiers=..., 
   
importMode=importMode@entry=KWin::EglGbmLayerSurface::MultiGpuImportMode::Egl, 
    bufferTarget=KWin::EglGbmLayerSurface::BufferTarget::Normal, 
    tradeoff=KWin::Output::ColorPowerTradeoff::PreferEfficiency)
    at
/usr/src/debug/kwin/kwin-6.3.5/src/backends/drm/drm_egl_layer_surface.cpp:554
#18 0x00007fe7d287b595 in operator() (__closure=__closure@entry=0x7ffdd3f75000,
gbmFormats=..., 
   
importMode=importMode@entry=KWin::EglGbmLayerSurface::MultiGpuImportMode::Egl)
    at
/usr/src/debug/kwin/kwin-6.3.5/src/backends/drm/drm_egl_layer_surface.cpp:465
#19 0x00007fe7d287b769 in KWin::EglGbmLayerSurface::createSurface
(this=this@entry=0x56017a103558, size=..., 
    formats=...,
tradeoff=tradeoff@entry=KWin::Output::ColorPowerTradeoff::PreferEfficiency)
    at
/usr/src/debug/kwin/kwin-6.3.5/src/backends/drm/drm_egl_layer_surface.cpp:482
#20 0x00007fe7d287c061 in KWin::EglGbmLayerSurface::checkSurface
(this=this@entry=0x56017a103558, size=..., 
    formats=...,
tradeoff=tradeoff@entry=KWin::Output::ColorPowerTradeoff::PreferEfficiency)
    at
/usr/src/debug/kwin/kwin-6.3.5/src/backends/drm/drm_egl_layer_surface.cpp:388
#21 0x00007fe7d287c44c in KWin::EglGbmLayerSurface::renderTestBuffer
(this=0x56017a103558, bufferSize=..., 
    formats=..., tradeoff=KWin::Output::ColorPowerTradeoff::PreferEfficiency)
    at
/usr/src/debug/kwin/kwin-6.3.5/src/backends/drm/drm_egl_layer_surface.cpp:363
#22 KWin::EglGbmLayer::checkTestBuffer (this=0x56017a103460)
    at /usr/src/debug/kwin/kwin-6.3.5/src/backends/drm/drm_egl_layer.cpp:76
#23 0x00007fe7d288e584 in KWin::DrmPipeline::prepareAtomicPresentation
(this=0x560175d61300, 
    commit=<optimized out>, frame=std::shared_ptr<KWin::OutputFrame> (empty) =
{...})
    at /usr/src/debug/kwin/kwin-6.3.5/src/backends/drm/drm_pipeline.cpp:203
#24 0x00007fe7d288f393 in KWin::DrmPipeline::prepareAtomicCommit
(this=0x560175d61300, 
    commit=commit@entry=0x56017a38cef0,
mode=mode@entry=KWin::DrmPipeline::CommitMode::TestAllowModeset, 
    frame=std::shared_ptr<KWin::OutputFrame> (empty) = {...})
    at /usr/src/debug/kwin/kwin-6.3.5/src/backends/drm/drm_pipeline.cpp:161
#25 0x00007fe7d288f69a in KWin::DrmPipeline::commitPipelinesAtomic
(pipelines=..., 
    mode=mode@entry=KWin::DrmPipeline::CommitMode::TestAllowModeset, 
    frame=std::shared_ptr<KWin::OutputFrame> (empty) = {...},
unusedObjects=...)
    at /usr/src/debug/kwin/kwin-6.3.5/src/backends/drm/drm_pipeline.cpp:108
#26 0x00007fe7d2890ca9 in KWin::DrmPipeline::commitPipelines (pipelines=...,
mode=<optimized out>, 
    unusedObjects=...) at
/usr/src/debug/kwin/kwin-6.3.5/src/backends/drm/drm_pipeline.cpp:88
#27 KWin::DrmPipeline::commitPipelines (pipelines=...,
mode=KWin::DrmPipeline::CommitMode::TestAllowModeset, 
    unusedObjects=...) at
/usr/src/debug/kwin/kwin-6.3.5/src/backends/drm/drm_pipeline.cpp:84
#28 0x00007fe7d2882e79 in KWin::DrmGpu::testPipelines (this=0x560175eeaee0)
--Type <RET> for more, q to quit, c to continue without paging--
    at /usr/src/debug/kwin/kwin-6.3.5/src/backends/drm/drm_gpu.cpp:466
#29 KWin::DrmGpu::testPipelines (this=0x560175eeaee0)
    at /usr/src/debug/kwin/kwin-6.3.5/src/backends/drm/drm_gpu.cpp:456
#30 KWin::DrmGpu::checkCrtcAssignment (this=this@entry=0x560175eeaee0,
connectors=..., crtcs=...)
    at /usr/src/debug/kwin/kwin-6.3.5/src/backends/drm/drm_gpu.cpp:351
#31 0x00007fe7d2883285 in KWin::DrmGpu::checkCrtcAssignment
(this=this@entry=0x560175eeaee0, connectors=..., 
    crtcs=...) at
/usr/src/debug/kwin/kwin-6.3.5/src/backends/drm/drm_gpu.cpp:367
#32 0x00007fe7d288319e in KWin::DrmGpu::checkCrtcAssignment
(this=this@entry=0x560175eeaee0, connectors=..., 
    crtcs=...) at /usr/include/qt6/QtCore/qarraydata.h:60
#33 0x00007fe7d2883285 in KWin::DrmGpu::checkCrtcAssignment
(this=this@entry=0x560175eeaee0, connectors=..., 
    crtcs=...) at
/usr/src/debug/kwin/kwin-6.3.5/src/backends/drm/drm_gpu.cpp:367
#34 0x00007fe7d2883285 in KWin::DrmGpu::checkCrtcAssignment
(this=this@entry=0x560175eeaee0, connectors=..., 
    crtcs=...) at
/usr/src/debug/kwin/kwin-6.3.5/src/backends/drm/drm_gpu.cpp:367
#35 0x00007fe7d2883285 in KWin::DrmGpu::checkCrtcAssignment
(this=this@entry=0x560175eeaee0, connectors=..., 
    crtcs=...) at
/usr/src/debug/kwin/kwin-6.3.5/src/backends/drm/drm_gpu.cpp:367
#36 0x00007fe7d2883285 in KWin::DrmGpu::checkCrtcAssignment
(this=this@entry=0x560175eeaee0, connectors=..., 
    crtcs=...) at
/usr/src/debug/kwin/kwin-6.3.5/src/backends/drm/drm_gpu.cpp:367
#37 0x00007fe7d28874a3 in KWin::DrmGpu::testPendingConfiguration
(this=<optimized out>)
    at /usr/include/qt6/QtCore/qarraydata.h:60
#38 0x00007fe7d285f3de in KWin::DrmBackend::applyOutputChanges
(this=0x7fe7c400fd20, config=...)
    at /usr/include/c++/15.1.1/bits/unique_ptr.h:193
#39 0x00007fe7d27e24f6 in KWin::Workspace::applyOutputConfiguration
(this=this@entry=0x56017a1036a0, config=..., 
    outputOrder=std::optional = {...}) at
/usr/src/debug/kwin/kwin-6.3.5/src/workspace.cpp:508
#40 0x00007fe7d27e2ec2 in KWin::Workspace::updateOutputConfiguration
(this=this@entry=0x56017a1036a0)
    at /usr/src/debug/kwin/kwin-6.3.5/src/workspace.cpp:581
#41 0x00007fe7d27e37c0 in KWin::Workspace::slotOutputBackendOutputsQueried
(this=0x56017a1036a0)
    at /usr/src/debug/kwin/kwin-6.3.5/src/workspace.cpp:1246
#42 0x00007fe7d27d864b in KWin::Workspace::init (this=<optimized out>)
    at /usr/src/debug/kwin/kwin-6.3.5/src/workspace.cpp:229
#43 0x00007fe7d268b40f in KWin::Application::createWorkspace
(this=0x7ffdd3f76b00)
    at /usr/src/debug/kwin/kwin-6.3.5/src/main.cpp:255
#44 0x00005601529e52dc in KWin::ApplicationWayland::performStartup
(this=0x7ffdd3f76b00)
    at /usr/src/debug/kwin/kwin-6.3.5/src/main_wayland.cpp:146
#45 0x00005601529d7503 in main (argc=<optimized out>, argv=<optimized out>)
    at /usr/src/debug/kwin/kwin-6.3.5/src/main_wayland.cpp:620

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