K 10
svn:author
V 3
jch
K 8
svn:date
V 27
2017-10-01T21:20:28.725519Z
K 7
svn:log
V 583
Fix an infinite loop in tcp_tw_2msl_scan() when an INP_TIMEWAIT inp has
been destroyed before its tcptw with INVARIANTS undefined.

This is a symmetric change of r307551:

A INP_TIMEWAIT inp should not be destroyed before its tcptw, and INVARIANTS
will catch this case.  If INVARIANTS is undefined it will emit a log(LOG_ERR)
and avoid a hard to debug infinite loop in tcp_tw_2msl_scan().

Reported by:		Ben Rubson, hselasky
Submitted by:		hselasky
Tested by:		Ben Rubson, jch
MFC after:		1 week
Sponsored by:		Verisign, inc
Differential Revision:	https://reviews.freebsd.org/D12267

END