netdev - [PATCH v2 00/21] exit_net checks for objects initialized in net

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Message-ID: <4fdc4264-e338-6ee8-a662-7d98b45733a1@virtuozzo.com>
Date:   Sun, 5 Nov 2017 19:49:09 +0300
From:   Vasily Averin <vvs@...tuozzo.com>
To:     netdev@...r.kernel.org
Subject: [PATCH v2 00/21] exit_net checks for objects initialized in net_init
 hook

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