From: Wolfgang Bumiller <w.bumiller@proxmox.com>
Date: Thu, 18 Jan 2018 10:32:35 +0000 (+0100)
Subject: net: sched: em_nbyte: don't add the data offset twice
X-Git-Tag: v4.15~14^2~8
X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=commitdiff_plain;h=560a66075d694e6ec24c60967b4d93d97cbb33d1;p=linux.git

net: sched: em_nbyte: don't add the data offset twice

'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>
---

diff --git a/net/sched/em_nbyte.c b/net/sched/em_nbyte.c
index df3110d69585..07c10bac06a0 100644
--- a/net/sched/em_nbyte.c
+++ b/net/sched/em_nbyte.c
@@ -51,7 +51,7 @@ static int em_nbyte_match(struct sk_buff *skb, struct tcf_ematch *em,
 	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 = {