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(parent: 7a68ada) | patch
netfilter: expect: add to hash table after expect init
authorFlorian Westphal <fw@strlen.de>
Mon, 10 Jul 2017 13:06:39 +0000 (15:06 +0200)
committerPablo Neira Ayuso <pablo@netfilter.org>
Mon, 24 Jul 2017 10:20:10 +0000 (12:20 +0200)
commit56a97e701c49ff66dd1a5e5e02775209ab5147d3
tree248560469ad38cb17a67be395dad3c590624e724tree | snapshot (tar.gz zip)
parent7a68ada6ec7d88c68057d3a4c2a517eb94289976commit | diff
netfilter: expect: add to hash table after expect init

assuming we have lockless readers we should make sure they can only
see expectations that have already been initialized.

hlist_add_head_rcu acts as memory barrier, move it after timer setup.

Theoretically we could crash due to a del_timer() on other cpu
seeing garbage data.

Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
net/netfilter/nf_conntrack_expect.c diff | blob | blame | history