linux-kernel - Re: [PATCH v2] Documentation/tracing: Mention that RESET_ATTACK

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Message-ID: <20241007130858.7e25daeb@gandalf.local.home>
Date: Mon, 7 Oct 2024 13:08:58 -0400
From: Steven Rostedt <rostedt@...dmis.org>
To: Jonathan Corbet <corbet@....net>
Cc: LKML <linux-kernel@...r.kernel.org>, Linux Trace Kernel
 <linux-trace-kernel@...r.kernel.org>, linux-doc@...r.kernel.org, Masami
 Hiramatsu <mhiramat@...nel.org>, Mathieu Desnoyers
 <mathieu.desnoyers@...icios.com>, Mike Rapoport <mike.rapoport@...il.com>,
 Kees Cook <keescook@...omium.org>, Ard Biesheuvel <ardb@...nel.org>, Hans
 de Goede <hdegoede@...hat.com>
Subject: Re: [PATCH v2] Documentation/tracing: Mention that
 RESET_ATTACK_MITIGATION can clear memory

On Mon, 07 Oct 2024 11:06:06 -0600
Jonathan Corbet <corbet@....net> wrote:

> Steven Rostedt <rostedt@...dmis.org> writes:
> 
> > Jon,
> >
> > This version should be good to go.  
> 
> Applied, thanks.

And I now see I sent an older version that had a typo in it :-p


+			Note, saving the trace buffer across reboots does require that the system
+			is set up to not wipe memory. For instance, CONFIG_RESET_ATTACK_MITIGATION
+			can force a memory reset on boot which will clear any trace that was stored.
+			This is just one of many ways that can clear memory. Make sure you system

										       your system

+			keeps the content of memory across reboots before relying on this option.
+

I can send a v3.

-- Steve