netdev - [PATCH 1/1] drivers:net: fix return value check in be_lancer_xmit

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Message-Id: <20230717144532.22037-1-ruc_gongyuanjun@163.com>
Date: Mon, 17 Jul 2023 22:45:32 +0800
From: Yuanjun Gong <ruc_gongyuanjun@....com>
To: Yuanjun Gong <ruc_gongyuanjun@....com>,
	Ajit Khaparde <ajit.khaparde@...adcom.com>,
	Sriharsha Basavapatna <sriharsha.basavapatna@...adcom.com>,
	Somnath Kotur <somnath.kotur@...adcom.com>,
	netdev@...r.kernel.org
Subject: [PATCH 1/1] drivers:net: fix return value check in be_lancer_xmit_workarounds

in be_lancer_xmit_workarounds, it should go to label 'err' if
an unexpected value is returned by pskb_trim.

Signed-off-by: Yuanjun Gong <ruc_gongyuanjun@....com>
---
 drivers/net/ethernet/emulex/benet/be_main.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/emulex/benet/be_main.c b/drivers/net/ethernet/emulex/benet/be_main.c
index 18c2fc880d09..eba29a2e0e8b 100644
--- a/drivers/net/ethernet/emulex/benet/be_main.c
+++ b/drivers/net/ethernet/emulex/benet/be_main.c
@@ -1138,7 +1138,8 @@ static struct sk_buff *be_lancer_xmit_workarounds(struct be_adapter *adapter,
 	    (lancer_chip(adapter) || BE3_chip(adapter) ||
 	     skb_vlan_tag_present(skb)) && is_ipv4_pkt(skb)) {
 		ip = (struct iphdr *)ip_hdr(skb);
-		pskb_trim(skb, eth_hdr_len + ntohs(ip->tot_len));
+		if (unlikely(pskb_trim(skb, eth_hdr_len + ntohs(ip->tot_len))))
+			goto err;
 	}
 
 	/* If vlan tag is already inlined in the packet, skip HW VLAN
-- 
2.17.1