Bug#1034356: gnome-shell: Frozen UI and massive log flodding

[Simon McVittie]

Control: clone 1034356 -2
Control: forwarded 1034356 https://gitlab.gnome.org/GNOME/gjs/-/merge_requests/832
Control: reassign 1034356 libgjs0g 1.74.2-1
Control: fixed 1034356 1.76.1-1
Control: reassign -2 gnome-shell-extension-vertical-overview
Control: retitle -2 gnome-shell-extension-vertical-overview: Attempting to call back into JSAPI during the sweeping phase of GC
Control: affects 1034356 = gnome-shell
Control: affects -2 = gnome-shell

H.-Dirk Schmitt wrote:
> After migration to bookworm on 2 different machines the gnome-shell was frozen in the last week.
> Via SSH – or switching to the good old console – I was able to see that journald was running with 100% cpu at that time.
...
> But I found 2 valuable hints that the issue can be mitigated with an
> upgrade of gjs to 1.76.1
> - https://github.com/pop-os/pop/issues/2893
> - https://gitlab.gnome.org/GNOME/gnome-shell/-/issues/1868

Because the log flooding and UI freeze is the more serious part of this
issue, I'm cloning the bug and using the original bug number #1034356
to represent the log flooding and UI freeze.

Any time "Attempting to call back into JSAPI during the sweeping phase
of GC" appears in the log, that indicates a bug in either the Shell or an
extension (in this case I think it's most likely to be the
vertical-overview extension). Please use the cloned bug number
(which will be higher than #1034356) to represent this.

The key change in gjs seems to be the second commit of
<https://gitlab.gnome.org/GNOME/gjs/-/merge_requests/832> so I'll try to
build a package with that change for testing.

> > I see from the log messages that you have a non-default theme and
> > several
> > Shell extensions enabled. Can this be reproduced without any
> > extensions?
> 
> The machines with problems are administered remotely – so I can't
> disable extensions et.al. 

Sorry, there is a limit to what the GNOME team can do to help you if it
is not possible to debug an issue.

    smcv