After some research I can now safely confirm this bug. However, the log
lines do not seem to be related to any rules in "/etc/audit/rules.d" or
AppArmor profiles loaded. %‑)

The only difference between the log lines in *this* bug report, my lines
and the ones mentioned on
https://bugzilla.redhat.com/show_bug.cgi?id=1507282 seems to be system-
specific configuration, e.g. SELinux.

Over the past 24 hours, I also had sometimes 100 lines at once in my log
when opening or reloading a web page, in a new tab in Firefox. Therefore
Firefox seems to be the only "offending" application at present.

I also cleared the /etc/audit/rules.d and uninstalled the AppArmor
extras packages (apparmor-profiles, apparmor-profiles-extra) with the
Firefox profiles in it. Unfortunately the logs lines still poured in.
Therefore I also changed the abstractions for Firefox
(/etc/apparmor.d/abstractions/ubuntu-browsers) and commented out
everything Firefox related, with no avail.

The problem is somewhere deeper and not Firefox-specific. I hope Tyler
Hicks (tyhicks) is correct and the fixes mentioned will soon be
available. Due to the problem I generated several GiB of logs a day
which is not so good for my SSD (even with wear-leveling).

My temporary workaround is to stop auditd, since unlike
/etc/systemd/journald.conf there is no Storage=volatile option for
auditd. :-0  ',:-l  >:/

** Bug watch added: Red Hat Bugzilla #1507282
   https://bugzilla.redhat.com/show_bug.cgi?id=1507282

** Bug watch added: Red Hat Bugzilla #1117953
   https://bugzilla.redhat.com/show_bug.cgi?id=1117953

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https://bugs.launchpad.net/bugs/1774711

Title:
  excessive seccomp audit logs

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