Object .GUnionVolumeMonitor (0x5572c2e0f8a0), has been already deallocated

[Angel D. Segarra]

on Ubuntu 21.10
gnome-shell 40.5-1ubuntu2

Locking desktop and then unlocking it makes gnome-shell spit out a stack trace.

v 22 02:00:49 saturn gnome-shell[33781]: Object .GUnionVolumeMonitor (0x5572c2e0f8a0), has been already deallocated — impossible to access it. This might be caused by the>
Nov 22 02:00:49 saturn gnome-shell[33781]: == Stack trace for context 0x5572c18e3130 ==
Nov 22 02:00:49 saturn gnome-shell[33781]: #0 7ffcbc579470 b resource:///org/gnome/gjs/modules/core/overrides/GObject.js:567 (22c5be1b1d80 @ 25)
Nov 22 02:00:49 saturn gnome-shell[33781]: #1 5572c8ea2dc0 i resource:///org/gnome/shell/ui/components/autorunManager.js:159 (374b9f3380 @ 31)
Nov 22 02:00:49 saturn gnome-shell[33781]: #2 7ffcbc57a1d0 b resource:///org/gnome/shell/ui/components/__init__.js:56 (374b9d7650 @ 66)
Nov 22 02:00:49 saturn gnome-shell[33781]: #3 7ffcbc57a960 b resource:///org/gnome/shell/ui/components/__init__.js:22 (374b9d7790 @ 15)
Nov 22 02:00:49 saturn gnome-shell[33781]: #4 7ffcbc57b030 b self-hosted:225 (374b92ab50 @ 273)
Nov 22 02:00:49 saturn gnome-shell[33781]: #5 5572c8ea2d30 i resource:///org/gnome/shell/ui/components/__init__.js:22 (374b9d78d0 @ 110)
...skipping...
Nov 22 02:04:21 saturn gnome-shell[33781]: #7 7ffcbc578a80 b resource:///org/gnome/shell/ui/sessionMode.js:200 (25da4d8e6d30 @ 284)
Nov 22 02:04:21 saturn gnome-shell[33781]: #8 7ffcbc579630 b resource:///org/gnome/shell/ui/sessionMode.js:168 (25da4d8e6e20 @ 116)
Nov 22 02:04:21 saturn gnome-shell[33781]: #9 7ffcbc579dc0 b resource:///org/gnome/shell/ui/screenShield.js:574 (25da4d8d4a60 @ 79)
Nov 22 02:04:21 saturn gnome-shell[33781]: #10 7ffcbc57a550 b resource:///org/gnome/shell/ui/screenShield.js:565 (25da4d8d4ab0 @ 17)
Nov 22 02:04:21 saturn gnome-shell[33781]: #11 7ffcbc57acd0 b resource:///org/gnome/shell/gdm/authPrompt.js:604 (25da4d8f24c0 @ 65)
Nov 22 02:04:21 saturn gnome-shell[33781]: #12 7ffcbc57b460 b resource:///org/gnome/shell/ui/unlockDialog.js:871 (374b9053d0 @ 40)
Nov 22 02:04:21 saturn gnome-shell[33781]: #13 7ffcbc57bbf0 b resource:///org/gnome/shell/ui/screenShield.js:565 (25da4d8d4b00 @ 50)
Nov 22 02:04:21 saturn gnome-shell[33781]: #14 7ffcbc57c380 b resource:///org/gnome/shell/ui/screenShield.js:116 (25da4d8dc6f0 @ 13)
Nov 22 02:04:21 saturn gnome-shell[33781]: #15 7ffcbc57ca50 b resource:///org/gnome/gjs/modules/core/_signals.js:114 (22c5be1b1330 @ 439)
Nov 22 02:04:21 saturn gnome-shell[33781]: #16 5572c39ba218 i resource:///org/gnome/gjs/modules/core/overrides/Gio.js:152 (22c5be1a5b50 @ 39)
Nov 22 02:04:21 saturn gnome-shell[33781]: Object .GUnionVolumeMonitor (0x5572c2e0f8a0), has been already deallocated — impossible to connect to any signal on it. This migh>
Nov 22 02:04:21 saturn gnome-shell[33781]: cr_parser_new_from_buf: assertion 'a_buf && a_len' failed
Nov 22 02:04:21 saturn dbus-daemon[33727]: [session uid=1000 pid=33727] Activating service name='org.freedesktop.FileManager1' requested by ':1.20' (uid=1000 pid=33781 comm>
Nov 22 02:04:21 saturn gnome-shell[33781]: cr_declaration_parse_list_from_buf: assertion 'parser' failed
Nov 22 02:04:21 saturn gnome-shell[33781]: cr_parser_new_from_buf: assertion 'a_buf && a_len' failed
Nov 22 02:04:21 saturn gnome-shell[33781]: cr_declaration_parse_list_from_buf: assertion 'parser' failed
Nov 22 02:04:21 saturn gnome-shell[33781]: cr_parser_new_from_buf: assertion 'a_buf && a_len' failed
Nov 22 02:04:21 saturn gnome-shell[33781]: cr_declaration_parse_list_from_buf: assertion 'parser' failed
Nov 22 02:04:21 saturn gnome-shell[33781]: Object .GUnionVolumeMonitor (0x5572c2e0f8a0), has been already deallocated — impossible to access it. This might be caused by the>
Nov 22 02:04:21 saturn gnome-shell[33781]: g_volume_monitor_get_volumes: assertion 'G_IS_VOLUME_MONITOR (volume_monitor)' failed
Nov 22 02:04:21 saturn gnome-shell[33781]: == Stack trace for context 0x5572c18e3130 ==
Nov 22 02:04:21 saturn gnome-shell[33781]: #0 5572c39ba218 i resource:///org/gnome/shell/ui/components/automountManager.js:66 (374b9f3e20 @ 30)
Nov 22 02:04:21 saturn gnome-shell[33781]: #1 7ffcbc57d550 b self-hosted:850 (374b92a650 @ 398)
Nov 22 02:04:21 saturn NetworkManager[1054]: <info> [1637564661.8704] agent-manager: agent[70e63220a742bb64,:1.631/org.gnome.Shell.NetworkAgent/1000]: agent registered
Nov 22 02:04:21 saturn gnome-shell[33781]: cr_parser_new_from_buf: assertion 'a_buf && a_len' failed
Nov 22 02:04:21 saturn gnome-shell[33781]: cr_declaration_parse_list_from_buf: assertion 'parser' failed

[Daniel van Vugt (vanvugt)]

Thanks for the bug report. This sounds like:

  https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/2020

which was fixed in https://github.com/micheleg/dash-to-dock/commit/d8dbbd8f776ec64d65f9938c2b597104c09ca86f

[Daniel van Vugt (vanvugt)]

To test that theory, try running without Ubuntu Dock enabled.

[Angel D. Segarra (angel-segarra)]

Can confirm, does not happen with dock disabled. Thanks!