From: Lorenzo Bianconi <lorenzo@kernel.org>
To: nbd@nbd.name
Cc: lorenzo.bianconi@redhat.com, linux-wireless@vger.kernel.org,
ryder.lee@mediatek.com
Subject: [PATCH 2/2] mt76: mt7615: check sta_rates pointer in mt7615_sta_rate_tbl_update
Date: Sat, 22 Jan 2022 15:58:58 +0100 [thread overview]
Message-ID: <c8da460f23e5d9df3b27a91d67667990dc2dbb6b.1642863255.git.lorenzo@kernel.org> (raw)
In-Reply-To: <cover.1642863255.git.lorenzo@kernel.org>
Check sta_rates pointer value in mt7615_sta_rate_tbl_update routine
since minstrel_ht_update_rates can fail allocating rates array.
Fixes: 04b8e65922f63 ("mt76: add mac80211 driver for MT7615 PCIe-based chipsets")
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
---
drivers/net/wireless/mediatek/mt76/mt7615/main.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/net/wireless/mediatek/mt76/mt7615/main.c b/drivers/net/wireless/mediatek/mt76/mt7615/main.c
index 9f7ac78f1222..fca38f0e1a27 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7615/main.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7615/main.c
@@ -689,6 +689,9 @@ static void mt7615_sta_rate_tbl_update(struct ieee80211_hw *hw,
struct ieee80211_sta_rates *sta_rates = rcu_dereference(sta->rates);
int i;
+ if (!sta_rates)
+ return;
+
spin_lock_bh(&dev->mt76.lock);
for (i = 0; i < ARRAY_SIZE(msta->rates); i++) {
msta->rates[i].idx = sta_rates->rate[i].idx;
--
2.34.1
prev parent reply other threads:[~2022-01-22 14:59 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-01-22 14:58 [PATCH 0/2] check sta_rates pointer in sta_rate_tbl_update callback Lorenzo Bianconi
2022-01-22 14:58 ` [PATCH 1/2] mt76: mt7603: check sta_rates pointer in mt7603_sta_rate_tbl_update Lorenzo Bianconi
2022-01-22 14:58 ` Lorenzo Bianconi [this message]
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