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Subject[PATCH 5.10 488/530] ath10k: Fix ath10k_wmi_tlv_op_pull_peer_stats_info() unlock without lock
Date
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:
--
2.30.2


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