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From: Greg KH <gregkh@linuxfoundation.org>
To: Masami Ichikawa <masami256@gmail.com>
Cc: rostedt@goodmis.org, mingo@redhat.com,
	linux-kernel@vger.kernel.org, stable@vger.kernel.org
Subject: Re: [PATCH] tracing: Do not set trace clock  if tracefs lockdown is in effect
Date: Thu, 16 Jan 2020 11:09:25 +0100	[thread overview]
Message-ID: <20200116100925.GA157179@kroah.com> (raw)
In-Reply-To: <20200116094707.3846565-1-masami256@gmail.com>

On Thu, Jan 16, 2020 at 06:47:06PM +0900, Masami Ichikawa wrote:
> When trace_clock option is not set and unstable clcok detected,
> tracing_set_default_clock() sets trace_clock(ThinkPad A285 is one of
> case). In that case, if lockdown is in effect, null pointer
> dereference error happens in ring_buffer_set_clock().
> 
> Link: https://bugzilla.redhat.com/show_bug.cgi?id=1788488
> Signed-off-by: Masami Ichikawa <masami256@gmail.com>
> ---
>  kernel/trace/trace.c | 5 +++++
>  1 file changed, 5 insertions(+)


<formletter>

This is not the correct way to submit patches for inclusion in the
stable kernel tree.  Please read:
    https://www.kernel.org/doc/html/latest/process/stable-kernel-rules.html
for how to do this properly.

</formletter>

  reply	other threads:[~2020-01-16 10:09 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-01-16  9:47 [PATCH] tracing: Do not set trace clock if tracefs lockdown is in effect Masami Ichikawa
2020-01-16 10:09 ` Greg KH [this message]
2020-01-16 13:06   ` Masami Ichikawa
2020-01-16 13:12 ` Masami Ichikawa

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