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Message-ID: <20200929194924.31640617@oasis.local.home>
Date: Tue, 29 Sep 2020 19:49:24 -0400
From: Steven Rostedt <rostedt@...dmis.org>
To: Kees Cook <keescook@...omium.org>
Cc: kernel-hardening@...ts.openwall.com, John Wood <john.wood@....com>,
Matthew Wilcox <willy@...radead.org>, Jonathan Corbet <corbet@....net>,
Alexander Viro <viro@...iv.linux.org.uk>, Ingo Molnar <mingo@...hat.com>,
Peter Zijlstra <peterz@...radead.org>, Juri Lelli <juri.lelli@...hat.com>,
Vincent Guittot <vincent.guittot@...aro.org>, Dietmar Eggemann
<dietmar.eggemann@....com>, Ben Segall <bsegall@...gle.com>, Mel Gorman
<mgorman@...e.de>, Luis Chamberlain <mcgrof@...nel.org>, Iurii Zaikin
<yzaikin@...gle.com>, James Morris <jmorris@...ei.org>, "Serge E. Hallyn"
<serge@...lyn.com>, linux-doc@...r.kernel.org,
linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org,
linux-security-module@...r.kernel.org
Subject: Re: [RFC PATCH 3/6] security/fbfam: Use the api to manage
statistics
On Tue, 29 Sep 2020 19:47:12 -0400
Steven Rostedt <rostedt@...dmis.org> wrote:
> On Thu, 10 Sep 2020 16:33:38 -0700
> Kees Cook <keescook@...omium.org> wrote:
>
> > > @@ -1940,6 +1941,7 @@ static int bprm_execve(struct linux_binprm *bprm,
> > > task_numa_free(current, false);
> > > if (displaced)
> > > put_files_struct(displaced);
> > > + fbfam_execve();
> >
> > As mentioned in the other emails, I think this could trivially be
> > converted into an LSM: all the hooks are available AFAICT. If you only
> > want to introspect execve _happening_, you can use bprm_creds_for_exec
> > which is called a few lines above. Otherwise, my prior suggestion ("the
> > exec has happened" hook via brpm_cred_committing, etc).
>
> And if its information only, you could just register a callback to the
> trace_sched_process_exec() tracepoint and do whatever you want then.
>
> The tracepoints are available for anyone to attach to. Not just tracing.
>
And there's also trace_sched_process_fork() and
trace_sched_process_exit().
-- Steve
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