2021-05-27 11:37:46

by Lorenzo Bianconi

[permalink] [raw]
Subject: [PATCH 1/3] mt76: testmode: fix memory leak in mt76_testmode_alloc_skb

Free all pending frames in case of failure in mt76_testmode_alloc_skb
routine

Fixes: 2601dda8faa76 ("mt76: testmode: add support to send larger packet")
Signed-off-by: Lorenzo Bianconi <[email protected]>
---
drivers/net/wireless/mediatek/mt76/testmode.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/net/wireless/mediatek/mt76/testmode.c b/drivers/net/wireless/mediatek/mt76/testmode.c
index 001d0ba5f73e..f40387a866ee 100644
--- a/drivers/net/wireless/mediatek/mt76/testmode.c
+++ b/drivers/net/wireless/mediatek/mt76/testmode.c
@@ -158,8 +158,11 @@ int mt76_testmode_alloc_skb(struct mt76_phy *phy, u32 len)
frag_len = MT_TXP_MAX_LEN;

frag = alloc_skb(frag_len, GFP_KERNEL);
- if (!frag)
+ if (!frag) {
+ mt76_testmode_free_skb(phy);
+ dev_kfree_skb(head);
return -ENOMEM;
+ }

__skb_put_zero(frag, frag_len);
head->len += frag->len;
--
2.31.1