[PATCH v2 net-next 0/5] net: bridge: take care of p->flags accesses

[Eric Dumazet <edumazet@google.com>]

(struct net_bridge_port)->flags can be read/written locklessly,
and thus can fire KCSAN warnings, or real bugs.

Prefer atomic operations (test_bit(), clear_bit(), set_bit())
and use READ_ONCE() for the remaining uses.

v2: addressed Nikolay's feedback on patches 3 & 4.

Eric Dumazet (5):
  bridge: use atomic ops to read/change p->flags in sysfs
  bridge: use atomic ops to read/change p->flags in br_netlink.c
  net: bridge: use atomic ops to read/change p->flags (I)
  net: bridge: use atomic ops to read/change p->flags (II)
  net: bridge: use atomic ops to read/change p->flags (III)

 net/bridge/br_arp_nd_proxy.c | 22 +++-----
 net/bridge/br_fdb.c          |  2 +-
 net/bridge/br_forward.c      | 15 +++---
 net/bridge/br_if.c           |  2 +-
 net/bridge/br_input.c        | 12 ++---
 net/bridge/br_mrp.c          | 20 ++++----
 net/bridge/br_mrp_netlink.c  |  8 +--
 net/bridge/br_multicast.c    |  5 +-
 net/bridge/br_netlink.c      | 99 +++++++++++++++++++-----------------
 net/bridge/br_stp.c          |  4 +-
 net/bridge/br_stp_bpdu.c     |  2 +-
 net/bridge/br_switchdev.c    |  8 +--
 net/bridge/br_sysfs_if.c     | 61 ++++++++++++----------
 net/bridge/br_vlan_options.c |  2 +-
 14 files changed, 134 insertions(+), 128 deletions(-)

-- 
2.54.0.1099.g489fc7bff1-goog