netfilter: conntrack: destroy functions need to free queued packets

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queued skbs might be using conntrack extensions that are being removed,
such as timeout.  This happens for skbs that have a skb->nfct in
unconfirmed state (i.e., not in hash table yet).

This is destructive, but there are only two use cases:
 - module removal (rare)
 - netns cleanup (most likely no conntracks exist, and if they do,
   they are removed anyway later on).

Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

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Florian Westphal 2017-07-26 00:02:33 +02:00 • committed by Pablo Neira Ayuso

parent 84657984c2

commit e2a750070a

2 changed files with 5 additions and 0 deletions

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4

net/netfilter/nf_conntrack_core.c

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1

net/netfilter/nf_queue.c

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