[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-Id: <20230227135241.947052-1-void0red@gmail.com>
Date: Mon, 27 Feb 2023 21:52:41 +0800
From: void0red <void0red@...il.com>
To: lorenzo.bianconi@...hat.com
Cc: angelogioacchino.delregno@...labora.com, davem@...emloft.net,
edumazet@...gle.com, kuba@...nel.org, kvalo@...nel.org,
linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
linux-mediatek@...ts.infradead.org, linux-wireless@...r.kernel.org,
lorenzo@...nel.org, matthias.bgg@...il.com, nbd@....name,
netdev@...r.kernel.org, pabeni@...hat.com, ryder.lee@...iatek.com,
sean.wang@...iatek.com, shayne.chen@...iatek.com,
void0red@...il.com
Subject: [PATCH v2] wifi: mt76: add a check of vzalloc in mt7615_coredump_work
From: Kang Chen <void0red@...il.com>
vzalloc may fails, dump might be null and will cause
illegal address access later.
Fixes: d2bf7959d9c0 ("mt76: mt7663: introduce coredump support")
Signed-off-by: Kang Chen <void0red@...il.com>
---
v2 -> v1: add Fixes tag
drivers/net/wireless/mediatek/mt76/mt7615/mac.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/net/wireless/mediatek/mt76/mt7615/mac.c b/drivers/net/wireless/mediatek/mt76/mt7615/mac.c
index a95602473..73d84c301 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7615/mac.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7615/mac.c
@@ -2367,6 +2367,9 @@ void mt7615_coredump_work(struct work_struct *work)
}
dump = vzalloc(MT76_CONNAC_COREDUMP_SZ);
+ if (!dump)
+ return;
+
data = dump;
while (true) {
--
2.34.1
Powered by blists - more mailing lists