diff mbox series

[v2] wifi: mt76: add a check of vzalloc in mt7615_coredump_work

Message ID 20230227135241.947052-1-void0red@gmail.com
State New
Headers show
Series [v2] wifi: mt76: add a check of vzalloc in mt7615_coredump_work | expand

Commit Message

void0red Feb. 27, 2023, 1:52 p.m. UTC 
From: Kang Chen <void0red@gmail.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@gmail.com>
---
v2 -> v1: add Fixes tag

 drivers/net/wireless/mediatek/mt76/mt7615/mac.c | 3 +++
 1 file changed, 3 insertions(+)
diff mbox series

Patch

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) {