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

Kang Chen
2023-02-27T11:57:30Z

vzalloc may fails, dump might be null and will cause
illegal address access later.

Signed-off-by: Kang Chen <void0red@gmail.com>
---
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