ipv6: do not increment mac header when it's unset
authorJason A. Donenfeld <Jason@zx2c4.com>
Fri, 21 Oct 2016 09:28:25 +0000 (18:28 +0900)
committerDavid S. Miller <davem@davemloft.net>
Sun, 23 Oct 2016 21:38:58 +0000 (17:38 -0400)
commitb678aa578c9e400429e027269e8de2783e5e73ce
treec1dd6a3119b327b4cdf94aed4feadee7721d5a79
parenta6e2846cacf97d4c70c5e923325b015cfa1e9053
ipv6: do not increment mac header when it's unset

Otherwise we'll overflow the integer. This occurs when layer 3 tunneled
packets are handed off to the IPv6 layer.

Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
net/ipv6/reassembly.c