Re: [PATCH] cpufreq: initialize policy rwsem before sysfs publication

[Viresh Kumar]

On 30-08-26, 23:53, Runyu Xiao wrote:
> cpufreq_policy_alloc() initializes policy->rwsem after
> kobject_init_and_add() has created the policy sysfs directory and its
> default attributes. A sysfs access can therefore reach a policy callback
> before the semaphore has been initialized.
> 
> Initialize policy->rwsem before publishing the policy kobject so sysfs
> callbacks always see an initialized semaphore.
> 
> Fixes: ad7722dab729 ("cpufreq: create per policy rwsem instead of per CPU cpu_policy_rwsem")
> Cc: stable@xxxxxxxxxxxxxxx
> Assisted-by: Codex:GPT-5
> Signed-off-by: Runyu Xiao <runyu.xiao@xxxxxxxxxx>
> ---
>  drivers/cpufreq/cpufreq.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)

Acked-by: Viresh Kumar <viresh.kumar@xxxxxxxxxx>

-- 
viresh