tree edfcfac1f41af2d3c3397eea8a66ae9b53f29ab3
parent 7f677633379b4abb3281cdbe7e7006f049305c03
author Eric Dumazet <edumazet@google.com> 1486937032 -0800
committer David S. Miller <davem@davemloft.net> 1486955689 -0500

net/llc: avoid BUG_ON() in skb_orphan()

It seems nobody used LLC since linux-3.12.

Fortunately fuzzers like syzkaller still know how to run this code,
otherwise it would be no fun.

Setting skb->sk without skb->destructor leads to all kinds of
bugs, we now prefer to be very strict about it.

Ideally here we would use skb_set_owner() but this helper does not exist yet,
only CAN seems to have a private helper for that.

Fixes: 376c7311bdb6 ("net: add a temporary sanity check in skb_orphan()")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: Andrey Konovalov <andreyknvl@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>