Re: [PATCH] cpufreq: scpi: fix use after free

2019-03-28 Thread Rafael J. Wysocki
On Wednesday, March 27, 2019 11:06:42 PM CET Vincent Stehlé wrote:
> Free the priv structure only after we are done using it.
> 
> Fixes: 1690d8bb91e370ab ("cpufreq: scpi/scmi: Fix freeing of dynamic OPPs")
> Signed-off-by: Vincent Stehlé 
> Cc: Sudeep Holla 
> Cc: "Rafael J. Wysocki" 
> Cc: Viresh Kumar 
> ---
>  drivers/cpufreq/scpi-cpufreq.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/cpufreq/scpi-cpufreq.c b/drivers/cpufreq/scpi-cpufreq.c
> index 3f49427766b88..2b51e0718c9f6 100644
> --- a/drivers/cpufreq/scpi-cpufreq.c
> +++ b/drivers/cpufreq/scpi-cpufreq.c
> @@ -189,8 +189,8 @@ static int scpi_cpufreq_exit(struct cpufreq_policy 
> *policy)
>  
>   clk_put(priv->clk);
>   dev_pm_opp_free_cpufreq_table(priv->cpu_dev, >freq_table);
> - kfree(priv);
>   dev_pm_opp_remove_all_dynamic(priv->cpu_dev);
> + kfree(priv);
>  
>   return 0;
>  }
> 

I've queued this one up, thanks!




[PATCH] cpufreq: scpi: fix use after free

2019-03-27 Thread Vincent Stehlé
Free the priv structure only after we are done using it.

Fixes: 1690d8bb91e370ab ("cpufreq: scpi/scmi: Fix freeing of dynamic OPPs")
Signed-off-by: Vincent Stehlé 
Cc: Sudeep Holla 
Cc: "Rafael J. Wysocki" 
Cc: Viresh Kumar 
---
 drivers/cpufreq/scpi-cpufreq.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/cpufreq/scpi-cpufreq.c b/drivers/cpufreq/scpi-cpufreq.c
index 3f49427766b88..2b51e0718c9f6 100644
--- a/drivers/cpufreq/scpi-cpufreq.c
+++ b/drivers/cpufreq/scpi-cpufreq.c
@@ -189,8 +189,8 @@ static int scpi_cpufreq_exit(struct cpufreq_policy *policy)
 
clk_put(priv->clk);
dev_pm_opp_free_cpufreq_table(priv->cpu_dev, >freq_table);
-   kfree(priv);
dev_pm_opp_remove_all_dynamic(priv->cpu_dev);
+   kfree(priv);
 
return 0;
 }
-- 
2.20.1