From: "Rafael J. Wysocki" <rafael.j.wysocki@intel.com>
To: Colin King <colin.king@canonical.com>, Len Brown <len.brown@intel.com>
Cc: Hubert Chrzaniuk <hubert.chrzaniuk@intel.com>,
Dasaratharaman Chandramouli
<dasaratharaman.chandramouli@intel.com>,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH] tools/power turbostat: fix overflow read on array slm_freq_table
Date: Mon, 25 Apr 2016 14:00:28 +0200 [thread overview]
Message-ID: <571E06DC.70301@intel.com> (raw)
In-Reply-To: <1461521904-9745-1-git-send-email-colin.king@canonical.com>
On 4/24/2016 8:18 PM, Colin King wrote:
> From: Colin Ian King <colin.king@canonical.com>
>
> When i >= SLM_BCLK_FREQS, the frequency read from the slm_freq_table
> is off the end of the array because msr is set to 3 rather than the
> actual array index i. Set i to 3 rather than msr to fix this.
>
> Signed-off-by: Colin Ian King <colin.king@canonical.com>
Can you please CC this to linux-pm@vger.kernel.org? It is easier to
handle then.
> ---
> tools/power/x86/turbostat/turbostat.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/tools/power/x86/turbostat/turbostat.c b/tools/power/x86/turbostat/turbostat.c
> index acbf7ff..a66f07c 100644
> --- a/tools/power/x86/turbostat/turbostat.c
> +++ b/tools/power/x86/turbostat/turbostat.c
> @@ -3050,7 +3050,7 @@ double slm_bclk(void)
> i = msr & 0xf;
> if (i >= SLM_BCLK_FREQS) {
> fprintf(outf, "SLM BCLK[%d] invalid\n", i);
> - msr = 3;
> + i = 3;
> }
> freq = slm_freq_table[i];
>
prev parent reply other threads:[~2016-04-25 12:00 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-04-24 18:18 [PATCH] tools/power turbostat: fix overflow read on array slm_freq_table Colin King
2016-04-25 12:00 ` Rafael J. Wysocki [this message]
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