[PATCH] audit: always enable syscall auditing when supported and audit is enabled
Paul Moore
paul at paul-moore.com
Mon Jan 28 14:19:36 UTC 2019
On Mon, Jan 28, 2019 at 4:04 AM Sverdlin, Alexander (Nokia - DE/Ulm)
<alexander.sverdlin at nokia.com> wrote:
> Hello Paul,
>
> On 08/12/2015 17:42, Paul Moore wrote:
> > To the best of our knowledge, everyone who enables audit at compile
> > time also enables syscall auditing; this patch simplifies the Kconfig
> > menus by removing the option to disable syscall auditing when audit
> > is selected and the target arch supports it.
> >
> > Signed-off-by: Paul Moore <pmoore at redhat.com>
>
> this patch is responsible for massive performance degradation for those
> who used only CONFIG_SECURITY_APPARMOR.
>
> And the numbers are, take the following test for instance:
>
> dd if=/dev/zero of=/dev/null count=2M
>
> ARM64: 500MB/s -> 350MB/s
> ARM: 400MB/s -> 300MB/s
Hi there.
Out of curiosity, what kernel/distribution are you running, or is this
a custom kernel compile? Can you also share the output of 'auditctl
-l' from your system? The general approach taken by everyone to
turn-off the per-syscall audit overhead is to add the "-a never,task"
rule to their audit configuration:
# auditctl -a never,task
If you are using Fedora/CentOS/RHEL, or a similarly configured system,
you can find this configuration in the /etc/audit/audit.rules file (be
warned, that file is automatically generated based on
/etc/audit/rules.d).
--
paul moore
www.paul-moore.com
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