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Olivier Fourdan aa0ea88e13 xwayland: Make sure we do not leak xwl_window on destroy
Right now, we would dispose the xwl_window and all the data associated
with it on unrealize.

But not all window destruction go through the unrealize code path, for
example when the root window (running rootful) is destroyed from the
resource manager on server reset, we do not get to the unrealize window
step, but straight to destroy window.

As a result, we are leaking the xwl_window and all the data associated
with it, for example:

| 65,536 bytes in 1 blocks are possibly lost in loss record 12,462 of 12,488
|    at 0x484A0FC: calloc (vg_replace_malloc.c:1675)
|    by 0x48B661C: UnknownInlinedFun (pixman-bits-image.c:1273)
|    by 0x48B661C: _pixman_bits_image_init (pixman-bits-image.c:1296)
|    by 0x48B6754: create_bits_image_internal (pixman-bits-image.c:1349)
|    by 0x64180DE: UnknownInlinedFun (cairo-image-surface.c:380)
|    by 0x64180DE: UnknownInlinedFun (cairo-image-surface.c:366)
|    by 0x64180DE: cairo_image_surface_create (cairo-image-surface.c:432)
|    by 0x6346B44: UnknownInlinedFun (libdecor-gtk.c:467)
|    by 0x6346B44: libdecor_plugin_gtk_frame_new (libdecor-gtk.c:546)
|    by 0x4B7F297: libdecor_decorate (libdecor.c:559)
|    by 0x42C6F3: xwl_create_root_surface (xwayland-window.c:1266)
|    by 0x42CD97: ensure_surface_for_window (xwayland-window.c:1466)
|    by 0x42D0D1: xwl_realize_window (xwayland-window.c:1560)
|    by 0x50858F: compRealizeWindow (compwindow.c:279)
|    by 0x4FF2A2: MapWindow (window.c:2706)
|    by 0x4F9E7F: InitRootWindow (window.c:697)

To avoid that issue, check whether there is still an xwl_window
associated with the X11 window on destroy, and if that's the case,
dispose the xwl_window.

Signed-off-by: Olivier Fourdan <ofourdan@redhat.com>
(cherry picked from commit 0e1a98f52f)

Part-of: <https://gitlab.freedesktop.org/xorg/xserver/-/merge_requests/1569>
2024-07-04 08:36:40 +00:00
.gitlab-ci Drop Xorg DDX 2024-04-12 10:40:05 +02:00
composite Drop Xorg DDX 2024-04-12 10:40:05 +02:00
damageext Remove autotools support 2021-10-27 13:15:40 +03:00
dbe Drop Xorg DDX 2024-04-12 10:40:05 +02:00
dix Drop config directory 2024-04-12 10:40:05 +02:00
doc dix: dixutils: make workQueue pointer dix-private 2024-02-23 23:06:38 +00:00
dri3 Drop Xorg DDX 2024-04-12 10:40:05 +02:00
fb Drop Xorg DDX 2024-04-12 10:40:05 +02:00
glamor xwayland/glamor: Handle depth 15 in gbm_format_for_depth 2024-05-02 10:17:36 +02:00
glx Drop Xorg DDX 2024-04-12 10:40:05 +02:00
hw xwayland: Make sure we do not leak xwl_window on destroy 2024-07-04 08:36:40 +00:00
include Drop config directory 2024-04-12 10:40:05 +02:00
man Drop Xorg DDX 2024-04-12 10:40:05 +02:00
mi Drop Xorg DDX 2024-04-12 10:40:05 +02:00
miext Drop miext/shadow directory 2024-04-12 10:40:05 +02:00
os os: Explicitly include X11/Xmd.h for CARD32 definition to fix building on i686 2024-07-04 08:36:40 +00:00
present present: On *BSD, epoll-shim is needed to emulate eventfd() 2024-07-04 08:36:40 +00:00
randr Drop Xorg DDX 2024-04-12 10:40:05 +02:00
record dix: unexport eventconvert.h functions 2024-03-11 12:26:44 +01:00
render Drop Xorg DDX 2024-04-12 10:40:05 +02:00
test Drop Xephyr / kdrive DDX 2024-04-12 10:40:05 +02:00
Xext Drop Xorg DDX 2024-04-12 10:40:05 +02:00
xfixes dix: unexport global variables 2024-03-09 17:23:43 +00:00
Xi Xi: ProcXIPassiveGrabDevice needs to use unswapped length to send reply 2024-04-02 19:19:40 -07:00
xkb xkb: drop ununsed XkbNameMatchesPattern() 2024-04-09 06:56:20 +00:00
.appveyor.yml Drop Xephyr / kdrive DDX 2024-04-12 10:40:05 +02:00
.dir-locals.el .dir-locals.el: Add missing final newline 2019-10-01 17:05:28 +00:00
.gitignore Clean up the .gitignore file 2024-01-12 00:50:24 +00:00
.gitlab-ci.yml meson: Change project name to xwayland 2024-04-12 10:40:05 +02:00
.mailmap Add a .mailmap file to canonicalize author names and emails 2023-03-15 18:10:51 +00:00
COPYING modesetting: Merge modesetting's COPYING into the xserver's. 2014-09-15 12:46:02 -07:00
meson.build Bump version to 24.1.0 2024-05-15 08:21:39 +02:00
meson_options.txt meson: Build Xwayland unconditionally 2024-04-12 10:40:05 +02:00
README.md Fix spelling/wording issues 2020-07-05 13:07:33 -07:00
xserver.ent.in doc: relocate xserver.ent in the package root directory 2011-05-14 11:22:26 -07:00

X Server

The X server accepts requests from client applications to create windows, which are (normally rectangular) "virtual screens" that the client program can draw into.

Windows are then composed on the actual screen by the X server (or by a separate composite manager) as directed by the window manager, which usually communicates with the user via graphical controls such as buttons and draggable titlebars and borders.

For a comprehensive overview of X Server and X Window System, consult the following article: https://en.wikipedia.org/wiki/X_server

All questions regarding this software should be directed at the Xorg mailing list:

https://lists.freedesktop.org/mailman/listinfo/xorg

The primary development code repository can be found at:

https://gitlab.freedesktop.org/xorg/xserver

For patch submission instructions, see:

https://www.x.org/wiki/Development/Documentation/SubmittingPatches

As with other projects hosted on freedesktop.org, X.Org follows its Code of Conduct, based on the Contributor Covenant. Please conduct yourself in a respectful and civilized manner when using the above mailing lists, bug trackers, etc:

https://www.freedesktop.org/wiki/CodeOfConduct