[Wayland-bugs] [Bug 72610] New: SIGSEGV: ALT-TAB crashes Weston in surface_free_unused_subsurface_views(...)

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=72610

          Priority: medium
            Bug ID: 72610
          Assignee: wayland-bugs at lists.freedesktop.org
           Summary: SIGSEGV: ALT-TAB crashes Weston in
                    surface_free_unused_subsurface_views(...)
          Severity: critical
    Classification: Unclassified
                OS: All
          Reporter: ullysses.a.eoff at intel.com
          Hardware: Other
            Status: NEW
           Version: unspecified
         Component: weston
           Product: Wayland

Created attachment 90620
  --> https://bugs.freedesktop.org/attachment.cgi?id=90620&action=edit
Weston segfault gdb backtrace

While running the weston-nested demo client (with eglSwapInterval 0), using
<ALT>+<TAB> causes Weston to crash with the following output:

[10:43:27.548] caught signal: 11
[10:43:27.548]   [000000000040f55f]  --  (weston)
[10:43:27.548]   [000000000040f60b]  --  (weston)
[10:43:27.548]   [0000003a9200efa0]  --  (/lib64/libpthread.so.0)
[10:43:27.548]   [00007fa361fcc9d4]  wl_list_remove 
(/home/uartie/Work/wayland/install/lib/libwayland-server.so.0)
[10:43:27.548]   [000000000040a811]  weston_view_destroy  (weston)
[10:43:27.548]   [000000000040b3f1]  --  (weston)
[10:43:27.548]   [000000000040b8af]  --  (weston)
[10:43:27.548]   [000000000040a801]  weston_view_destroy  (weston)
[10:43:27.548]   [00007fa35fe4de77]  -- 
(/home/uartie/Work/wayland/install/lib/weston/desktop-shell.so)
[10:43:27.548]   [00007fa35fe4e05b]  -- 
(/home/uartie/Work/wayland/install/lib/weston/desktop-shell.so)
[10:43:27.549]   [00000000004129c4]  notify_modifiers  (weston)
[10:43:27.549]   [0000000000412a40]  --  (weston)
[10:43:27.549]   [0000000000413069]  notify_key  (weston)
[10:43:27.549]   [00007fa361d8a1d8]  -- 
(/home/uartie/Work/wayland/install/lib/weston/drm-backend.so)
[10:43:27.549]   [00007fa361d8a714]  -- 
(/home/uartie/Work/wayland/install/lib/weston/drm-backend.so)
[10:43:27.549]   [00007fa361d8a82b]  -- 
(/home/uartie/Work/wayland/install/lib/weston/drm-backend.so)
[10:43:27.549]   [00007fa361d8a9b6]  -- 
(/home/uartie/Work/wayland/install/lib/weston/drm-backend.so)
[10:43:27.549]   [00007fa361fc92d8]  -- 
(/home/uartie/Work/wayland/install/lib/libwayland-server.so.0)
[10:43:27.549]   [00007fa361fc9c89]  wl_event_loop_dispatch 
(/home/uartie/Work/wayland/install/lib/libwayland-server.so.0)
[10:43:27.549]   [000000000040bb19]  --  (weston)
[10:43:27.549]   [000000000040bcd6]  weston_output_finish_frame  (weston)
[10:43:27.549]   [00007fa361d83b49]  -- 
(/home/uartie/Work/wayland/install/lib/weston/drm-backend.so)
[10:43:27.549]   [00007fa36130a1c4]  drmHandleEvent 
(/home/uartie/Work/wayland/install/lib/libdrm.so.2)
[10:43:27.549]   [00007fa361d84fc2]  -- 
(/home/uartie/Work/wayland/install/lib/weston/drm-backend.so)
[10:43:27.549]   [00007fa361fc92d8]  -- 
(/home/uartie/Work/wayland/install/lib/libwayland-server.so.0)
[10:43:27.549]   [00007fa361fc9c89]  wl_event_loop_dispatch 
(/home/uartie/Work/wayland/install/lib/libwayland-server.so.0)
[10:43:27.549]   [00007fa361fc7acd]  wl_display_run 
(/home/uartie/Work/wayland/install/lib/libwayland-server.so.0)
[10:43:27.549]   [00000000004100b2]  --  (weston)
[10:43:27.549]   [0000003a91821b75]  __libc_start_main  (/lib64/libc.so.6)
[10:43:27.549]   [0000000000406f89]  --  (weston)
Trace/breakpoint trap

See the attached gdb backtrace for more details.

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