netdev - [PATCH net-next] pktgen: do not abuse IN6_ADDR

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Message-ID: <1509809234.2849.73.camel@edumazet-glaptop3.roam.corp.google.com>
Date:   Sat, 04 Nov 2017 08:27:14 -0700
From:   Eric Dumazet <eric.dumazet@...il.com>
To:     Eric Dumazet <edumazet@...gle.com>,
        David Miller <davem@...emloft.net>
Cc:     Dan Carpenter <dan.carpenter@...cle.com>,
        netdev <netdev@...r.kernel.org>
Subject: [PATCH net-next] pktgen: do not abuse IN6_ADDR_HSIZE

From: Eric Dumazet <edumazet@...gle.com>

pktgen accidentally used IN6_ADDR_HSIZE, instead of using the size of an
IPv6 address.

Since IN6_ADDR_HSIZE recently was increased from 16 to 256, this old
bug is hitting us.

Fixes: 3f27fb23219e ("ipv6: addrconf: add per netns perturbation in inet6_addr_hash()")
Signed-off-by: Eric Dumazet <edumazet@...gle.com>
Reported-by: Dan Carpenter <dan.carpenter@...cle.com>
---
 net/core/pktgen.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/core/pktgen.c b/net/core/pktgen.c
index 6e1e10ff433a5f4097d1d4b33848ab13d4e005c6..e3fa53a07d34b3e5f6b438e08b440f520b3cd6d4 100644
--- a/net/core/pktgen.c
+++ b/net/core/pktgen.c
@@ -2165,7 +2165,7 @@ static void pktgen_setup_inject(struct pktgen_dev *pkt_dev)
 						+ pkt_dev->pkt_overhead;
 		}
 
-		for (i = 0; i < IN6_ADDR_HSIZE; i++)
+		for (i = 0; i < sizeof(struct in6_addr); i++)
 			if (pkt_dev->cur_in6_saddr.s6_addr[i]) {
 				set = 1;
 				break;