From: Shuah Khan skhan@linuxfoundation.org
[ Upstream commit eaaf52e4b866f265eb791897d622961293fd48c1 ]
ath10k_wmi_tlv_op_pull_peer_stats_info() could try to unlock RCU lock winthout locking it first when peer reason doesn't match the valid cases for this function.
Add a default case to return without unlocking.
Fixes: 09078368d516 ("ath10k: hold RCU lock when calling ieee80211_find_sta_by_ifaddr()") Reported-by: Pavel Machek pavel@ucw.cz Signed-off-by: Shuah Khan skhan@linuxfoundation.org Signed-off-by: Kalle Valo kvalo@codeaurora.org Link: https://lore.kernel.org/r/20210406230228.31301-1-skhan@linuxfoundation.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/net/wireless/ath/ath10k/wmi-tlv.c | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/drivers/net/wireless/ath/ath10k/wmi-tlv.c b/drivers/net/wireless/ath/ath10k/wmi-tlv.c index e7072fc4f487..4f2fbc610d79 100644 --- a/drivers/net/wireless/ath/ath10k/wmi-tlv.c +++ b/drivers/net/wireless/ath/ath10k/wmi-tlv.c @@ -592,6 +592,9 @@ static void ath10k_wmi_event_tdls_peer(struct ath10k *ar, struct sk_buff *skb) GFP_ATOMIC ); break; + default: + kfree(tb); + return; }
exit: