[PATCH v2] ath10k: hold RCU lock when calling ieee80211_find_sta_by_ifaddr()

Kalle Valo kvalo at codeaurora.org
Thu Feb 11 13:26:50 EST 2021

Shuah Khan <skhan at linuxfoundation.org> wrote:

> ieee80211_find_sta_by_ifaddr() must be called under the RCU lock and
> the resulting pointer is only valid under RCU lock as well.
> Fix ath10k_wmi_tlv_op_pull_peer_stats_info() to hold RCU lock before it
> calls ieee80211_find_sta_by_ifaddr() and release it when the resulting
> pointer is no longer needed.
> This problem was found while reviewing code to debug RCU warn from
> ath10k_wmi_tlv_parse_peer_stats_info().
> Link: https://lore.kernel.org/linux-wireless/7230c9e5-2632-b77e-c4f9-10eca557a5bb@linuxfoundation.org/
> Signed-off-by: Shuah Khan <skhan at linuxfoundation.org>
> Signed-off-by: Kalle Valo <kvalo at codeaurora.org>

Patch applied to ath-next branch of ath.git, thanks.

09078368d516 ath10k: hold RCU lock when calling ieee80211_find_sta_by_ifaddr()



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