Subject: Re: [PATCH] iwlwifi: mvm: protect RCU dereference in iwl_mvm_get_key_sta_id

From: Laura Abbott <[email-masked]>
Date: Fri, 11 Dec 2015 14:21:19 -0800

On 12/11/2015 12:13 AM, Johannes Berg wrote:
> From: Johannes Berg <[email-masked]>
>
> Properly protect the RCU dereference in iwl_mvm_get_key_sta_id() when
> coming from iwl_mvm_update_tkip_key() which cannot hold the mvm->mutex
> by moving the call into the RCU critical section.
> Modify the check to use rcu_dereference_check() to permit this.
>
> Fixes: 9513c5e18a0d ("iwlwifi: mvm: Avoid dereferencing sta if it was already flushed")
> Reported-by: Laura Abbott <[email-masked]>
> Signed-off-by: Johannes Berg <[email-masked]>

Thanks, it's working for me.

Tested-by: Laura Abbott <[email-masked]>