** Description changed:
+ [ Impact ]
+
+ GNOME Shell crashes and logs out the user when enabling popular extension
"Window List", which is officially supported by GNOME:
+ https://extensions.gnome.org/extension/602/window-list/
+
+ The root cause of the problem however is not in the extension itself but
+ in GNOME Shell, which incorrectly tracks stylesheet files that had
+ already been imported previously.
+
+ This was fixed by checking in the stylesheets hash-table whether the
+ file has already been imported before attempting to import it again.
+
+ [ Test Plan ]
+
+ 1. Install the extension
https://extensions.gnome.org/extension/602/window-list/
+ 2. Enable the "Window List" extension
+ 3. Disable the "Window List" extension
+ 4. Enable the "Window List" extension again
+ 5. Verify that GNOME Shell didn't crash
+ 6. Verify that the "Window List" panel is visible at the bottom of the screen
+
+ [ Where problems could occur ]
+
+ GNOME Shell provides the GNOME desktop UI, and thus is a critical
+ component of Ubuntu Desktop. A bug introduced by this patch would
+ manifest with missing graphical elements, or the desktop crashing and
+ logging out the user.
+
+ [ Other info ]
+
The Ubuntu Error Tracker has been receiving reports about a problem regarding
gnome-shell. This problem was most recently seen with package version
47.0-1ubuntu2, the problem page at
https://errors.ubuntu.com/problem/a2f72bf1e874e3112ae426f8e7009e4301ee676e
contains more details, including versions of packages affected, stacktrace or
traceback, and individual crash reports.
If you do not have access to the Ubuntu Error Tracker and are a software
developer, you can request it at http://forms.canonical.com/reports/.
** Changed in: gnome-shell (Ubuntu Oracular)
Status: Confirmed => In Progress
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Bugs, which is subscribed to Ubuntu.
https://bugs.launchpad.net/bugs/2081957
Title:
gnome-shell crashed with SIGSEGV in g_file_get_parent() from
_st_theme_resolve_url() from _st_theme_resolve_url() from
add_matched_properties() from add_matched_properties()
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