From: Yuanjun Gong <ruc_gongyuanjun@xxxxxxx>
[ Upstream commit 69a184f7a372aac588babfb0bd681aaed9779f5b ]
in atl1e_tso_csum, it should check the return value of pskb_trim(),
and return an error code if an unexpected value is returned
by pskb_trim().
Fixes: a6a5325239c2 ("atl1e: Atheros L1E Gigabit Ethernet driver")
Signed-off-by: Yuanjun Gong <ruc_gongyuanjun@xxxxxxx>
Reviewed-by: Simon Horman <simon.horman@xxxxxxxxxxxx>
Link: https://lore.kernel.org/r/20230720144219.39285-1-ruc_gongyuanjun@xxxxxxx
Signed-off-by: Jakub Kicinski <kuba@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/net/ethernet/atheros/atl1e/atl1e_main.c | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)
diff --git a/drivers/net/ethernet/atheros/atl1e/atl1e_main.c b/drivers/net/ethernet/atheros/atl1e/atl1e_main.c
index 3164aad29bcf8..e4d58c7aeaf82 100644
--- a/drivers/net/ethernet/atheros/atl1e/atl1e_main.c
+++ b/drivers/net/ethernet/atheros/atl1e/atl1e_main.c
@@ -1651,8 +1651,11 @@ static int atl1e_tso_csum(struct atl1e_adapter *adapter,
real_len = (((unsigned char *)ip_hdr(skb) - skb->data)
+ ntohs(ip_hdr(skb)->tot_len));
- if (real_len < skb->len)
- pskb_trim(skb, real_len);
+ if (real_len < skb->len) {
+ err = pskb_trim(skb, real_len);
+ if (err)
+ return err;
+ }
hdr_len = (skb_transport_offset(skb) + tcp_hdrlen(skb));
if (unlikely(skb->len == hdr_len)) {
--
2.39.2
