Could this be a duplicate of
https://bugs.launchpad.net/ubuntu/+source/libcgroup/+bug/693594?
I had problems with modprobe -r hanging, and after that any attempt to
do anything with modules also hung. After much testing I discovered
that cgroups was to blame, and setting cpu.rt_runtime_us in the
To get rid of the bayes: synced databases from journal emails reported
in comment 2, try this patch to /usr/bin/sa-learn. It turns off verbose
mode (forced on by --sync) which is what causes the output.
** Attachment added: Patch to turn off verbose mode when sa-learn --sync is
run
