commit | 63f55acf7b479250b7b0293333c3d94e05cb3f6f | [log] [tgz] |
---|---|---|
author | Florian Westphal <fw@strlen.de> | Sun Oct 13 20:19:45 2019 +0200 |
committer | Pablo Neira Ayuso <pablo@netfilter.org> | Thu Oct 17 11:26:20 2019 +0200 |
tree | 56083e4d8bb240c4947fb6b63f14911e2b7e7d7f | |
parent | f8615bf8a3dabd84bf844c6f888929495039d389 [diff] |
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>