[Bug 244002] Kernel panic while trying to read multicast stream

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=244002

--- Comment #21 from commit-hook at freebsd.org ---
A commit references this bug:

Author: hselasky
Date: Mon Feb 17 09:46:33 UTC 2020
New revision: 358013
URL: https://svnweb.freebsd.org/changeset/base/358013

Log:
  Fix kernel panic while trying to read multicast stream.

  When VIMAGE is enabled make sure the "m_pkthdr.rcvif" pointer is set
  for all mbufs being input by the IGMP/MLD6 code. Else there will be a
  NULL-pointer dereference in the netisr code when trying to set the
  VNET based on the incoming mbuf. Add an assert to catch this when
  queueing mbufs on a netisr to make debugging of similar cases easier.

  Found by:     Vladislav V. Prodan
  PR:           244002
  Reviewed by:  bz@
  MFC after:    1 week
  Sponsored by: Mellanox Technologies

Changes:
  head/sys/net/netisr.c
  head/sys/netinet/igmp.c
  head/sys/netinet6/mld6.c

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