D27956.diff
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	diff --git a/sys/amd64/amd64/pmap.c b/sys/amd64/amd64/pmap.c
	--- a/sys/amd64/amd64/pmap.c
	+++ b/sys/amd64/amd64/pmap.c
	@@ -9490,6 +9490,8 @@
	pa = 0;
	val = 0;
	pdpe = pmap_pdpe(pmap, addr);
	+ if (pdpe == NULL)
	+ goto out;
	if ((*pdpe & PG_V) != 0) {
	if ((*pdpe & PG_PS) != 0) {
	pte = *pdpe;
	@@ -9525,6 +9527,7 @@
	(pte & (PG_MANAGED \| PG_V)) == (PG_MANAGED \| PG_V)) {
	*pap = pa;
	}
	+out:
	PMAP_UNLOCK(pmap);
	return (val);
	}