From: Wolfgang Bumiller <w.bumiller@proxmox.com>
Date: Thu, 18 Jan 2018 11:32:35 +0100
Subject: net: sched: em_nbyte: don't add the data offset twice
Patch-mainline: v4.15
Git-commit: 560a66075d694e6ec24c60967b4d93d97cbb33d1
References: bsc#1109837

'ptr' is shifted by the offset and then validated,
the memcmp should not add it a second time.

Signed-off-by: Wolfgang Bumiller <w.bumiller@proxmox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
 net/sched/em_nbyte.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/net/sched/em_nbyte.c
+++ b/net/sched/em_nbyte.c
@@ -51,7 +51,7 @@ static int em_nbyte_match(struct sk_buff
 	if (!tcf_valid_offset(skb, ptr, nbyte->hdr.len))
 		return 0;
 
-	return !memcmp(ptr + nbyte->hdr.off, nbyte->pattern, nbyte->hdr.len);
+	return !memcmp(ptr, nbyte->pattern, nbyte->hdr.len);
 }
 
 static struct tcf_ematch_ops em_nbyte_ops = {