D45160.id138517.diff
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D45160.id138517.diff
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	diff --git a/sys/arm64/arm64/pmap.c b/sys/arm64/arm64/pmap.c
	--- a/sys/arm64/arm64/pmap.c
	+++ b/sys/arm64/arm64/pmap.c
	@@ -5662,6 +5662,19 @@
	}
	}
	l3p = (pt_entry_t )PHYS_TO_DMAP(VM_PAGE_TO_PHYS(ml3p));
	+
	+have_l3p:
	+ /*
	+ * If bti is not the same for the whole L3C range, return
	+ * failure and let vm_fault() cope. Check after L3 allocation,
	+ * since it could sleep.
	+ */
	+ if (!pmap_bti_same(pmap, va, va + L3C_SIZE)) {
	+ (*ml3p)->ref_count -= L3C_ENTRIES - 1;
	+ pmap_abort_ptp(pmap, va, *ml3p);
	+ *ml3p = NULL;
	+ return (KERN_PROTECTION_FAILURE);
	+ }
	} else {
	*ml3p = NULL;

	@@ -5684,22 +5697,8 @@
	pmap_load(pde)));
	}
	}
	-have_l3p:
	l3p = &l3p[pmap_l3_index(va)];

	- /*
	- * If bti is not the same for the whole L3C range, return failure
	- * and let vm_fault() cope. Check after L3 allocation, since
	- * it could sleep.
	- */
	- if (!pmap_bti_same(pmap, va, va + L3C_SIZE)) {
	- KASSERT(*ml3p != NULL, ("pmap_enter_l3c: missing L3 PTP"));
	- (*ml3p)->ref_count -= L3C_ENTRIES - 1;
	- pmap_abort_ptp(pmap, va, *ml3p);
	- *ml3p = NULL;
	- return (KERN_PROTECTION_FAILURE);
	- }
	-
	/*
	* If there are existing mappings, either abort or remove them.
	*/