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From:   Paul Moore <paul@paul-moore.com>
Date:   Tue, 2 Feb 2021 16:45:56 -0500
Message-ID: <CAHC9VhSVBV=_pBnj7sxwJu0siXx5P7JrsYSz1_vW3j6WmTw+6w@mail.gmail.com>
Subject: Re: [PATCH 1/2] audit: show user land backtrace as part of audit
 context messages
To:     "Daniel Walker (danielwa)" <danielwa@cisco.com>
Cc:     "Victor Kamensky (kamensky)" <kamensky@cisco.com>,
        Eric Paris <eparis@redhat.com>,
        "xe-linux-external(mailer list)" <xe-linux-external@cisco.com>,
        "Ruslan Bilovol -X (rbilovol - GLOBALLOGIC INC at Cisco)" 
        <rbilovol@cisco.com>,
        "linux-audit@redhat.com" <linux-audit@redhat.com>,
        "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
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On Tue, Feb 2, 2021 at 4:44 PM Daniel Walker (danielwa)
<danielwa@cisco.com> wrote:
> On Tue, Feb 02, 2021 at 04:35:42PM -0500, Paul Moore wrote:
> > On Tue, Feb 2, 2021 at 4:29 PM Daniel Walker <danielwa@cisco.com> wrote:
> > > From: Victor Kamensky <kamensky@cisco.com>
> > >
> > > To efficiently find out where SELinux AVC denial is comming from
> > > take backtrace of user land process and display it as type=UBACKTRACE
> > > message that comes as audit context for SELinux AVC and other audit
> > > messages ...
> >
> > Have you tried the new perf tracepoint for SELinux AVC decisions that
> > trigger an audit event?  It's a new feature for v5.10 and looks to
> > accomplish most of what you are looking for with this patch.
> >
> > * https://www.paul-moore.com/blog/d/2020/12/linux_v510.html
>
> We haven't tried it, but I can look into it. We're not using v5.10 extensively
> yet.

Let us know if that works for you, and if it doesn't, let us know what
might be missing.  I hate seeing the kernel grow multiple features
which do the same thing.

-- 
paul moore
www.paul-moore.com