There is another oddity in the code structure, in
that if pt was ever NULL the code would misuse the
NULL before the test for non-NULL is made:
pt = moea_pvo_to_pte(pvo, -1);
. . .
old_pte = *pt;
/*
* If the PVO is in the page table, update that pte as well.
*/
if (pt != NULL) {
(I'm not claiming that this explains the panic.)
===
Mark Millard
marklmi at yahoo.com
( dsl-only.net went
away in early 2018-Mar)
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