patches/kernel/0011-net-sched-em_nbyte-don-t-add-the-data-offset-twice.patch

   1 From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
   2 From: Wolfgang Bumiller <w.bumiller@proxmox.com>
   3 Date: Fri, 19 Jan 2018 11:12:37 +0100
   4 Subject: [PATCH] net: sched: em_nbyte: don't add the data offset twice
   5 MIME-Version: 1.0
   6 Content-Type: text/plain; charset=UTF-8
   7 Content-Transfer-Encoding: 8bit
   8
   9 'ptr' is shifted by the offset and then validated,
  10 the memcmp should not add it a second time.
  11
  12 Signed-off-by: Wolfgang Bumiller <w.bumiller@proxmox.com>
  13 Signed-off-by: Fabian Grünbichler <f.gruenbichler@proxmox.com>
  14 ---
  15  net/sched/em_nbyte.c | 2 +-
  16  1 file changed, 1 insertion(+), 1 deletion(-)
  17
  18 diff --git a/net/sched/em_nbyte.c b/net/sched/em_nbyte.c
  19 index df3110d69585..07c10bac06a0 100644
  20 --- a/net/sched/em_nbyte.c
  21 +++ b/net/sched/em_nbyte.c
  22 @@ -51,7 +51,7 @@ static int em_nbyte_match(struct sk_buff *skb, struct tcf_ematch *em,
  23         if (!tcf_valid_offset(skb, ptr, nbyte->hdr.len))
  24                 return 0;
  25
  26 -       return !memcmp(ptr + nbyte->hdr.off, nbyte->pattern, nbyte->hdr.len);
  27 +       return !memcmp(ptr, nbyte->pattern, nbyte->hdr.len);
  28  }
  29
  30  static struct tcf_ematch_ops em_nbyte_ops = {