This patch set checks that lists initialized in net_init hooks were return to initial state at end of net_exit hooks.
I hope such checks allows to detect leaked per-netns objects. Also I hope that all new pernet_operations will inherit such checks too. I assume that elements added into per-net lists should not live longer than net namespace, and should be deleted from the list. I think exit_net hook is good place for such check. Recently I've found lost list_entry and enabled timer on stop of net namespace. Then I've reviewed all existing pernet_operations and found that many drivers have such checks already. So I decided to complete this task and add such checks into all affected subsystems. v2: - net pointer removed from output - fixed compilation for phonet driver Vasily Averin (21): exit_net cleanup: geneve sock_list check ppp: exit_net cleanup checks added vxlan: exit_net cleanup checks added netdev: exit_net cleanup check added nfs4blocklayout: exit_net cleanup check added nfs client: exit_net cleanup check added fib_notifier: exit_net cleanup check added fib_rules: exit_net cleanup check added clusterip: exit_net cleanup check added xfrm6_tunnel: exit_net cleanup check added af_key: replace BUG_ON on WARN_ON in net_exit hook l2tp: exit_net cleanup check added nf_tables: exit_net cleanup check added nfnetlink_log: exit_net cleanup check added nfnetlink_gueue: exit_net cleanup check added x_tables: exit_net cleanup check added hashlimit: exit_net cleanup check added recent: exit_net cleanup check added packet: exit_net cleanup check added phonet: exit_net cleanup check added sunrpc: exit_net cleanup check added drivers/net/geneve.c | 2 ++ drivers/net/ppp/ppp_generic.c | 4 ++++ drivers/net/vxlan.c | 6 ++++++ fs/nfs/blocklayout/rpc_pipefs.c | 2 ++ fs/nfs/client.c | 4 ++++ net/core/dev.c | 3 +++ net/core/fib_notifier.c | 7 +++++++ net/core/fib_rules.c | 7 +++++++ net/ipv4/netfilter/ipt_CLUSTERIP.c | 2 ++ net/ipv6/xfrm6_tunnel.c | 12 ++++++++++++ net/key/af_key.c | 2 +- net/l2tp/l2tp_core.c | 6 ++++++ net/netfilter/nf_tables_api.c | 9 +++++++++ net/netfilter/nfnetlink_log.c | 6 ++++++ net/netfilter/nfnetlink_queue.c | 7 +++++++ net/netfilter/x_tables.c | 10 ++++++++++ net/netfilter/xt_hashlimit.c | 4 ++++ net/netfilter/xt_recent.c | 4 ++++ net/packet/af_packet.c | 2 ++ net/phonet/pn_dev.c | 4 ++++ net/sunrpc/sunrpc_syms.c | 4 ++++ 21 files changed, 106 insertions(+), 1 deletion(-) -- 2.7.4
