[PATCH] audit: optionally print warning after waiting to enqueue record

[Steve Grubb]

On Thursday, June 18, 2020 9:46:54 AM EDT Paul Moore wrote:
> On Thu, Jun 18, 2020 at 9:39 AM Steve Grubb <sgrubb at redhat.com> wrote:
> > The kernel cannot grow the backlog unbounded. If you do nothing, the
> > backlog is 64 - which is too small to really use. Otherwise, you set the
> > backlog to a finite number with the -b option.
> 
> If one were to set the backlog limit to 0, it is effectively disabled
> allowing the backlog to grow without any restrictions placed on it by
> the audit subsystem.

Then I'd say you asked for it. The cure is setting a number. But regardless, 
we could use some metrics on the backlog and visibility into the time it 
takes to dequeue. That might signal problems with plugins or overly agressive 
rules.

-Steve