netdev - [PATCH net 0/9] tcp: address KCSAN reports in tcp

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Date:   Thu, 10 Oct 2019 20:17:37 -0700
From:   Eric Dumazet <edumazet@...gle.com>
To:     "David S . Miller" <davem@...emloft.net>
Cc:     netdev <netdev@...r.kernel.org>,
        Eric Dumazet <edumazet@...gle.com>,
        Eric Dumazet <eric.dumazet@...il.com>,
        Jakub Kicinski <jakub.kicinski@...ronome.com>
Subject: [PATCH net 0/9] tcp: address KCSAN reports in tcp_poll() (part I)

This all started with a KCSAN report (included
in "tcp: annotate tp->rcv_nxt lockless reads" changelog)

tcp_poll() runs in a lockless way. This means that about
all accesses of tcp socket fields done in tcp_poll() context
need annotations otherwise KCSAN will complain about data-races.

While doing this detective work, I found a more serious bug,
addressed by the first patch ("tcp: add rcu protection around
tp->fastopen_rsk").

Eric Dumazet (9):
  tcp: add rcu protection around tp->fastopen_rsk
  tcp: annotate tp->rcv_nxt lockless reads
  tcp: annotate tp->copied_seq lockless reads
  tcp: annotate tp->write_seq lockless reads
  tcp: annotate tp->snd_nxt lockless reads
  tcp: annotate tp->urg_seq lockless reads
  tcp: annotate sk->sk_rcvbuf lockless reads
  tcp: annotate sk->sk_sndbuf lockless reads
  tcp: annotate sk->sk_wmem_queued lockless reads

 include/linux/tcp.h             |  6 +--
 include/net/sock.h              | 29 ++++++++++-----
 include/net/tcp.h               |  7 ++--
 include/trace/events/sock.h     |  4 +-
 net/core/datagram.c             |  2 +-
 net/core/filter.c               |  6 ++-
 net/core/request_sock.c         |  2 +-
 net/core/skbuff.c               |  2 +-
 net/core/sock.c                 | 22 ++++++-----
 net/ipv4/inet_connection_sock.c |  4 +-
 net/ipv4/inet_diag.c            |  2 +-
 net/ipv4/tcp.c                  | 65 +++++++++++++++++++--------------
 net/ipv4/tcp_diag.c             |  5 ++-
 net/ipv4/tcp_fastopen.c         |  2 +-
 net/ipv4/tcp_input.c            | 37 +++++++++++--------
 net/ipv4/tcp_ipv4.c             | 28 ++++++++------
 net/ipv4/tcp_minisocks.c        | 17 ++++++---
 net/ipv4/tcp_output.c           | 32 ++++++++--------
 net/ipv4/tcp_timer.c            | 11 +++---
 net/ipv6/tcp_ipv6.c             | 18 +++++----
 net/sched/em_meta.c             |  2 +-
 21 files changed, 175 insertions(+), 128 deletions(-)

-- 
2.23.0.700.g56cf767bdb-goog