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<base href="https://bugs.freedesktop.org/" />
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<body><table border="1" cellspacing="0" cellpadding="8">
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<th>Priority</th>
<td>medium
</td>
</tr>
<tr>
<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - XWayland: XWM can't handle transient windows without parent"
href="https://bugs.freedesktop.org/show_bug.cgi?id=59983">59983</a>
</td>
</tr>
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<th>Assignee</th>
<td>wayland-bugs@lists.freedesktop.org
</td>
</tr>
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<th>Summary</th>
<td>XWayland: XWM can't handle transient windows without parent
</td>
</tr>
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<th>Severity</th>
<td>minor
</td>
</tr>
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<th>Classification</th>
<td>Unclassified
</td>
</tr>
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<th>OS</th>
<td>All
</td>
</tr>
<tr>
<th>Reporter</th>
<td>tiago.vignatti@linux.intel.com
</td>
</tr>
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<th>Hardware</th>
<td>All
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
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<th>Version</th>
<td>unspecified
</td>
</tr>
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<th>Component</th>
<td>weston
</td>
</tr>
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<th>Product</th>
<td>Wayland
</td>
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<pre>Weston crashes because shell is trying to set a transient surface without
having a parent. The real problem though is in XWM which always assign
transient shell type for X override-redirected windows, in particular the ones
that don't have a parent. To fix for this behaviour, we have to introduce a
special shell type for X windows, where X windows are positioned globally and
not depending on their parents for anything.
To reproduce: start Weston with Xwayland support, start gedit then "File" ->
"Open" and press ESC. Weston segfaults with the following backtrace:
Program received signal SIGSEGV, Segmentation fault.
0x00007fffefae22d8 in set_surface_type (shsurf=0x9f1a80) at shell.c:1496
1496 pes->geometry.y + shsurf->transient.y);
(gdb) bt
#0 0x00007fffefae22d8 in set_surface_type (shsurf=0x9f1a80) at shell.c:1496
#1 0x00007fffefae5aee in shell_surface_configure (es=0x9f0490, sx=0, sy=0)
at shell.c:3039
#2 0x000000000040a757 in surface_commit (client=0x9a9d10, resource=0x9f0490)
at compositor.c:1401
#3 0x00007ffff635ea14 in ffi_call_unix64 ()
from /usr/lib/x86_64-linux-gnu/libffi.so.6
#4 0x00007ffff635e435 in ffi_call ()
from /usr/lib/x86_64-linux-gnu/libffi.so.6
#5 0x00007ffff7bd3404 in wl_closure_invoke (closure=0x9efc70,
target=0x9f0490, func=0x40a65a <surface_commit>, data=0x9a9d10)
at connection.c:908
#6 0x00007ffff7bcc63b in wl_client_connection_data (fd=32, mask=1,
data=0x9a9d10) at wayland-server.c:297
#7 0x00007ffff7bd06a8 in wl_event_source_fd_dispatch (source=0x962590,
ep=0x7fffffffd7a0) at event-loop.c:84
#8 0x00007ffff7bd1076 in wl_event_loop_dispatch (loop=0x6279b0, timeout=-1)
at event-loop.c:415
#9 0x00007ffff7bce4a3 in wl_display_run (display=0x627950)
at wayland-server.c:1207
#10 0x000000000040f12d in main (argc=1, argv=0x7fffffffdc88)
at compositor.c:3356
(gdb)</pre>
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