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(parent: d92191a) | patch
netfilter: nf_tables: do not hold reference on netdevice from preparation phase
authorPablo Neira Ayuso <pablo@netfilter.org>
Tue, 20 Mar 2018 16:00:19 +0000 (17:00 +0100)
committerPablo Neira Ayuso <pablo@netfilter.org>
Thu, 22 Mar 2018 12:17:52 +0000 (13:17 +0100)
commit90d2723c6d4cb2ace50fc3b932a2bcc77710450b
tree74c7035de716e4fdfdf3e9ec44341726713dbeb0tree | snapshot
parentd92191aa84e5f187d543867c3d54b38f294833facommit | diff
netfilter: nf_tables: do not hold reference on netdevice from preparation phase

The netfilter netdevice event handler hold the nfnl_lock mutex, this
avoids races with a device going away while such device is being
attached to hooks from the netlink control plane. Therefore, either
control plane bails out with ENOENT or netdevice event path waits until
the hook that is attached to net_device is registered.

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
net/netfilter/nf_tables_api.c diff | blob | history
Domain: System / Kernel;