From: Felix Fietkau <nbd@nbd.name>
To: linux-wireless@vger.kernel.org
Subject: [PATCH 1/2] mt76: mt7915: fix crash on tx rate report for invalid stations
Date: Wed, 5 Aug 2020 11:32:34 +0200 [thread overview]
Message-ID: <20200805093235.52506-1-nbd@nbd.name> (raw)
Check wcid RCU pointer before using it
Signed-off-by: Felix Fietkau <nbd@nbd.name>
---
drivers/net/wireless/mediatek/mt76/mt7915/mcu.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c b/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c
index 01fa9ca31d0e..949a387e8f93 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c
@@ -522,6 +522,9 @@ mt7915_mcu_tx_rate_report(struct mt7915_dev *dev, struct sk_buff *skb)
return;
wcid = rcu_dereference(dev->mt76.wcid[wcidx]);
+ if (!wcid)
+ return;
+
msta = container_of(wcid, struct mt7915_sta, wcid);
stats = &msta->stats;
--
2.24.0
next reply other threads:[~2020-08-05 9:33 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-08-05 9:32 Felix Fietkau [this message]
2020-08-05 9:32 ` [PATCH 2/2] mt76: fix double DMA unmap of the first buffer on 7615/7915 Felix Fietkau
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