Florian Westphal 63f55acf7b
netfilter: ecache: document extension area access rules ...
Once ct->ext gets free'd via kfree() rather than kfree_rcu we can't
access the extension area anymore without owning the conntrack.
This is a special case:
The worker is walking the pcpu dying list while holding dying list lock:
Neither ct nor ct->ext can be free'd until after the walk has completed.
Signed-off-by: Florian Westphal <fw@strlen.de >
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org >
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63f55acf7b