Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: apparmor (Ubuntu)
Status: New => Confirmed
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https://bugs.launchpad.net/bugs/1830502
Title:
apparmor uses excessive memory leading to oom kill
Status in apparmor package in Ubuntu:
Confirmed
Bug description:
When attempting to load the profile from comment #7, apparmor uses
excessive amounts of memory leading to being killed by the OOM killer
and thus the apparmor.service failing.
Original bug description:
On Ubuntu 18.04.2 LTS Desktop, after running out of space on my disk,
my system was unable to finish booting and I had to go into recovery
mode and remove a number of files before the system would boot. After
doing so I discovered that now the apparmor.service systemd unit
always fails to start. I see this in dmesg:
[ 1066.975360] Out of memory: Kill process 6799 (apparmor_parser) score 796
or sacrifice child
[ 1066.975364] Killed process 6799 (apparmor_parser) total-vm:15057348kB,
anon-rss:15046148kB, file-rss:0kB, shmem-rss:0kB
[ 1067.406595] oom_reaper: reaped process 6799 (apparmor_parser), now
anon-rss:0kB, file-rss:0kB, shmem-rss:0kB
Whenever apparmor.service is attempted to be started by systemd, i.e.
either on boot, or later with `systemctl start apparmor`.
The log from journalctl doesn't show any actual issues with any
profiles just this:
-- Reboot --
May 25 17:00:58 systemd[1]: Starting AppArmor initialization...
May 25 17:00:58 apparmor[1521]: * Starting AppArmor profiles
May 25 17:00:58 apparmor[1521]: Skipping profile in /etc/apparmor.d/disable:
usr.bin.firefox
May 25 17:00:58 apparmor[1521]: Skipping profile in /etc/apparmor.d/disable:
usr.sbin.rsyslogd
May 25 17:01:40 apparmor[1521]: ...fail!
May 25 17:01:40 systemd[1]: apparmor.service: Main process exited,
code=exited, status=123/n/a
May 25 17:01:40 systemd[1]: apparmor.service: Failed with result 'exit-code'.
May 25 17:01:40 systemd[1]: Failed to start AppArmor initialization.
May 25 17:04:53 systemd[1]: Starting AppArmor initialization...
May 25 17:04:53 apparmor[4747]: * Starting AppArmor profiles
May 25 17:04:53 apparmor[4747]: Skipping profile in /etc/apparmor.d/disable:
usr.bin.firefox
May 25 17:04:53 apparmor[4747]: Skipping profile in /etc/apparmor.d/disable:
usr.sbin.rsyslogd
May 25 17:05:25 apparmor[4747]: ...fail!
May 25 17:05:25 systemd[1]: apparmor.service: Main process exited,
code=exited, status=123/n/a
May 25 17:05:25 systemd[1]: apparmor.service: Failed with result 'exit-code'.
May 25 17:05:25 systemd[1]: Failed to start AppArmor initialization.
I can see that apparmor profiles are active after doing this (using
aa-status), but it's still troubling that apparmor runs into an issue
without actually saying what the error is.
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