Subject: Re: [PATCH 2/2] ath9k: fix ath_tx_process_buffer() potential null ptr dereference

From: Kalle Valo <[email-masked]>
Date: Tue, 16 Feb 2021 07:03:36 +0000 (UTC)

Shuah Khan <[email-masked]> wrote:

> ath_tx_process_buffer() references ieee80211_find_sta_by_ifaddr()
> return pointer (sta) outside null check. Fix it by moving the code
> block under the null check.
> 
> This problem was found while reviewing code to debug RCU warn from
> ath10k_wmi_tlv_parse_peer_stats_info() and a subsequent manual audit
> of other callers of ieee80211_find_sta_by_ifaddr() that don't hold
> RCU read lock.
> 
> Signed-off-by: Shuah Khan <[email-masked]>
> Signed-off-by: Kalle Valo <[email-masked]>

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

a56c14bb21b2 ath9k: fix ath_tx_process_buffer() potential null ptr dereference

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