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Subject[PATCH] ip_gre: fix wrong return value of erspan_rcv
Date
If pskb_may_pull return failed, return PACKET_REJECT instead of -ENOMEM.

Fixes: 84e54fe0a5ea ("gre: introduce native tunnel support for ERSPAN")
Cc: William Tu <u9012063@gmail.com>
Signed-off-by: Haishuang Yan <yanhaishuang@cmss.chinamobile.com>
---
net/ipv4/ip_gre.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/ipv4/ip_gre.c b/net/ipv4/ip_gre.c
index 61ee014..d747d06 100644
--- a/net/ipv4/ip_gre.c
+++ b/net/ipv4/ip_gre.c
@@ -267,7 +267,7 @@ static int erspan_rcv(struct sk_buff *skb, struct tnl_ptk_info *tpi,
len = gre_hdr_len + sizeof(*ershdr);

if (unlikely(!pskb_may_pull(skb, len)))
- return -ENOMEM;
+ return PACKET_REJECT;

iph = ip_hdr(skb);
ershdr = (struct erspanhdr *)(skb->data + gre_hdr_len);
--
1.8.3.1


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