Re: [PATCH] thermal: cpu_cooling: fix out of bounds access in time_in_idle
From: Javi Merino <hidden>
Date: 2016-01-25 14:44:31
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On Mon, Jan 18, 2016 at 10:25:35AM +0800, Nicolas Boichat wrote:
On Fri, Jan 15, 2016 at 11:20 PM, Javi Merino [off-list ref] wrote:quoted
Eduardo, Rui, On Tue, Jan 05, 2016 at 07:19:25PM +0000, Javi Merino wrote:quoted
On Mon, Dec 21, 2015 at 08:49:40AM +0530, Viresh Kumar wrote:quoted
On 19-12-15, 12:54, Javi Merino wrote:quoted
In __cpufreq_cooling_register() we allocate the arrays for time_in_idle and time_in_idle_timestamp to be as big as the number of cpus in this cpufreq device. However, in get_load() we access this array using the cpu number as index, which can result in an out of bound access. Index time_in_idle{,_timestamp} using the index in the cpufreq_device's allowed_cpus mask, as we do for the load_cpu array in cpufreq_get_requested_power() Reported-by: Nicolas Boichat <redacted> Cc: Amit Daniel Kachhap <amit.kachhap@gmail.com> Cc: Viresh Kumar <viresh.kumar@linaro.org> Cc: Zhang Rui <rui.zhang@intel.com> Cc: Eduardo Valentin <edubezval@gmail.com> Signed-off-by: Javi Merino <redacted> --- drivers/thermal/cpu_cooling.c | 14 ++++++++------ 1 file changed, 8 insertions(+), 6 deletions(-)Acked-by: Viresh Kumar <viresh.kumar@linaro.org>If there are no more objections, can you pick this up?Another gentle ping, can this be merged?Tested-by: Nicolas Boichat <redacted>
Eduardo, Rui, This has been in the list for more than a month now. It fixes an out of bounds access. It has been acked by Viresh (comaintainer of cpu_cooling) and has been tested by Nicolas. Can you guys merge it please? Cheers, Javi