K 10
svn:author
V 3
cem
K 8
svn:date
V 27
2018-01-10T21:49:45.739053Z
K 7
svn:log
V 519
mallocarray(9): panic if the requested allocation would overflow

Additionally, move the overflow check logic out to WOULD_OVERFLOW() for
consumers to have a common means of testing for overflowing allocations.
WOULD_OVERFLOW() should be a secondary check -- on 64-bit platforms, just
because an allocation won't overflow size_t does not mean it is a sane size
to request.  Callers should be imposing reasonable allocation limits far,
far, below overflow.

Discussed with:	emaste, jhb, kp
Sponsored by:	Dell EMC Isilon

END