1. 18 Oct, 2018 39 commits
  2. 16 Oct, 2018 1 commit
    • Daniel Borkmann's avatar
      tcp, ulp: remove socket lock assertion on ULP cleanup · aadd4355
      Daniel Borkmann authored
      Eric reported that syzkaller triggered a splat in tcp_cleanup_ulp()
      where assertion sock_owned_by_me() failed. This happened through
      inet_csk_prepare_forced_close() first releasing the socket lock,
      then calling into tcp_done(newsk) which is called after the
      inet_csk_prepare_forced_close() and therefore without the socket
      lock held. The sock_owned_by_me() assertion can generally be
      removed as the only place where tcp_cleanup_ulp() is called from
      now is out of inet_csk_destroy_sock() -> sk->sk_prot->destroy()
      where socket is in dead state and unreachable. Therefore, add a
      comment why the check is not needed instead.
      
      Fixes: 8b9088f8 ("tcp, ulp: enforce sock_owned_by_me upon ulp init and cleanup")
      Reported-by: default avatarEric Dumazet <edumazet@google.com>
      Signed-off-by: default avatarDaniel Borkmann <daniel@iogearbox.net>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      aadd4355