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
@@ -1291,6 +1291,7 @@
 	PMAP_LOCK_INIT(kernel_pmap);
 	kernel_pmap->pm_l0_paddr =
 	    pmap_early_vtophys((vm_offset_t)kernel_pmap_store.pm_l0);
+	TAILQ_INIT(&kernel_pmap->pm_pvchunk);
 	vm_radix_init(&kernel_pmap->pm_root);
 	kernel_pmap->pm_cookie = COOKIE_FROM(-1, INT_MIN);
 	kernel_pmap->pm_stage = PM_STAGE1;
@@ -2270,6 +2271,7 @@
 	bzero(&pmap->pm_stats, sizeof(pmap->pm_stats));
 	pmap->pm_l0_paddr = READ_SPECIALREG(ttbr0_el1);
 	pmap->pm_l0 = (pd_entry_t *)PHYS_TO_DMAP(pmap->pm_l0_paddr);
+	TAILQ_INIT(&pmap->pm_pvchunk);
 	vm_radix_init(&pmap->pm_root);
 	pmap->pm_cookie = COOKIE_FROM(ASID_RESERVED_FOR_PID_0, INT_MIN);
 	pmap->pm_stage = PM_STAGE1;
@@ -2293,6 +2295,7 @@
 	pmap->pm_l0_paddr = VM_PAGE_TO_PHYS(m);
 	pmap->pm_l0 = (pd_entry_t *)PHYS_TO_DMAP(pmap->pm_l0_paddr);
 
+	TAILQ_INIT(&pmap->pm_pvchunk);
 	vm_radix_init(&pmap->pm_root);
 	bzero(&pmap->pm_stats, sizeof(pmap->pm_stats));
 	pmap->pm_cookie = COOKIE_FROM(-1, INT_MAX);
diff --git a/sys/riscv/riscv/pmap.c b/sys/riscv/riscv/pmap.c
--- a/sys/riscv/riscv/pmap.c
+++ b/sys/riscv/riscv/pmap.c
@@ -646,6 +646,7 @@
 	/* Set this early so we can use the pagetable walking functions */
 	kernel_pmap_store.pm_top = (pd_entry_t *)l1pt;
 	PMAP_LOCK_INIT(kernel_pmap);
+	TAILQ_INIT(&kernel_pmap->pm_pvchunk);
 	vm_radix_init(&kernel_pmap->pm_root);
 
 	rw_init(&pvh_global_lock, "pmap pv global");
@@ -1327,6 +1328,7 @@
 	pmap->pm_satp = pmap_satp_mode() |
 	    (vtophys(pmap->pm_top) >> PAGE_SHIFT);
 	CPU_ZERO(&pmap->pm_active);
+	TAILQ_INIT(&pmap->pm_pvchunk);
 	vm_radix_init(&pmap->pm_root);
 	pmap_activate_boot(pmap);
 }
@@ -1369,6 +1371,7 @@
 		pmap->pm_top[i] = kernel_pmap->pm_top[i];
 	}
 
+	TAILQ_INIT(&pmap->pm_pvchunk);
 	vm_radix_init(&pmap->pm_root);
 
 	return (1);