From: Shuah Khan <skhan@linuxfoundation.org>
To: kvalo@codeaurora.org, davem@davemloft.net, kuba@kernel.org
Cc: Shuah Khan <skhan@linuxfoundation.org>,
ath10k@lists.infradead.org, linux-wireless@vger.kernel.org,
netdev@vger.kernel.org, linux-kernel@vger.kernel.org,
pavel@ucw.cz
Subject: [PATCH] ath10k: Fix ath10k_wmi_tlv_op_pull_peer_stats_info() unlock without lock
Date: Tue, 6 Apr 2021 17:02:28 -0600 [thread overview]
Message-ID: <20210406230228.31301-1-skhan@linuxfoundation.org> (raw)
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>
---
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 d97b33f789e4..7efbe03fbca8 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:
--
2.27.0
next reply other threads:[~2021-04-06 23:02 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-04-06 23:02 Shuah Khan [this message]
2021-04-22 14:00 ` [PATCH] ath10k: Fix ath10k_wmi_tlv_op_pull_peer_stats_info() unlock without lock Kalle Valo
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