Comment 79 for bug 1751460

(In reply to Michael Catanzaro from comment #15)
> ^ This remains the next step here. We need to know why the mmap() call is
> failing.

Jeremy discovered Deja Dup is setting a virtual memory limit in its desktop file:

Exec=sh -c "ulimit -v 1000000; exec @pkglibexecdir@/deja-dup-monitor"

which is incompatible with Gigacage. It needs to not do that. This is NOTABUG. Good find, Jeremy!

(In reply to Tomas Popela from comment #21)
> Nevermind, see Jiri's response in
> https://bugzilla.redhat.com/show_bug.cgi?id=1554873#c6. Updating mutter
> fixed the issue..

The mutter update would definitely fix the problem described (app fails to launch another app), but I don't see how it could possibly be related to the ensureGigacage() backtrace. Anyway, that bug is closed now too... we can always revisit if it becomes a problem again.