Re: [PATCH] ipv6: frags: Fix bogus skb->sk in reassembled packets

From: Herbert Xu <herbert@gondor.apana.org.au>
Date: Thu, 20 Dec 2018 21:20:10 +0800

It was reported that IPsec would crash when it encounters an IPv6
reassembled packet because skb->sk is non-zero and not a valid
pointer.

This is because skb->sk is now a union with ip_defrag_offset.

This patch fixes this by resetting skb->sk when exiting from
the reassembly code.

Reported-by: Xiumei Mu <redacted>
Fixes: 219badfaade9 ("ipv6: frags: get rid of ip6frag_skb_cb/...")
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

Applied and queued up for -stable, thanks Herbert.