[Bug 250366] [tcp] The ioctl of socket fd should return -1 after listen to avoid misusing.

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=250366

--- Comment #3 from commit-hook at FreeBSD.org ---
A commit references this bug:

Author: tuexen
Date: Sat Nov  7 21:17:49 UTC 2020
New revision: 367464
URL: https://svnweb.freebsd.org/changeset/base/367464

Log:
  The ioctl() calls using FIONREAD, FIONWRITE, FIONSPACE, and SIOCATMARK
  access the socket send or receive buffer. This is not possible for
  listening sockets since r319722.
  Because send()/recv() calls fail on listening sockets, fail also ioctl()
  indicating EINVAL.

  PR:                   250366
  Reported by:          Yong-Hao Zou
  Reviewed by:          glebius, rscheff
  MFC after:            1 week
  Sponsored by:         Netflix, Inc.
  Differential Revision:        https://reviews.freebsd.org/D26897

Changes:
  head/sys/kern/sys_socket.c

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