diff --git a/sys/i386/i386/pmap.c b/sys/i386/i386/pmap.c
index 567363abc899..623943f5c9c2 100644
--- a/sys/i386/i386/pmap.c
+++ b/sys/i386/i386/pmap.c
@@ -561,7 +561,9 @@ static MALLOC_DEFINE(M_PMAPPDPT, "pmap", "pmap pdpt");
 static void *
 pmap_pdpt_allocf(uma_zone_t zone, int bytes, u_int8_t *flags, int wait)
 {
-	*flags = UMA_SLAB_PRIV;
+
+	/* Inform UMA that this allocator uses kernel_map/object. */
+	*flags = UMA_SLAB_KERNEL;
 	return (contigmalloc(PAGE_SIZE, M_PMAPPDPT, 0, 0x0ULL, 0xffffffffULL,
 	    1, 0));
 }
diff --git a/sys/kern/kern_mbuf.c b/sys/kern/kern_mbuf.c
index 4cdb12e23c52..7846be818ce5 100644
--- a/sys/kern/kern_mbuf.c
+++ b/sys/kern/kern_mbuf.c
@@ -352,7 +352,8 @@ static void *
 mbuf_jumbo_alloc(uma_zone_t zone, int bytes, u_int8_t *flags, int wait)
 {
 
-	*flags = UMA_SLAB_PRIV;
+	/* Inform UMA that this allocator uses kernel_map/object. */
+	*flags = UMA_SLAB_KERNEL;
 	return (contigmalloc(bytes, M_JUMBOFRAME, wait, (vm_paddr_t)0,
 	    ~(vm_paddr_t)0, 1, 0));
 }
diff --git a/sys/vm/uma.h b/sys/vm/uma.h
index c082e9633f12..ffa8d628de84 100644
--- a/sys/vm/uma.h
+++ b/sys/vm/uma.h
@@ -488,6 +488,7 @@ void uma_zone_set_freef(uma_zone_t zone, uma_free freef);
  */
 #define UMA_SLAB_BOOT	0x01		/* Slab alloced from boot pages */
 #define UMA_SLAB_KMEM	0x02		/* Slab alloced from kmem_map */
+#define UMA_SLAB_KERNEL	0x04		/* Slab alloced from kernel_map */
 #define UMA_SLAB_PRIV	0x08		/* Slab alloced from priv allocator */
 #define UMA_SLAB_OFFP	0x10		/* Slab is managed separately  */
 #define UMA_SLAB_MALLOC	0x20		/* Slab is a large malloc slab */
diff --git a/sys/vm/uma_core.c b/sys/vm/uma_core.c
index c32f4d78e0ca..a74ca32c7ca1 100644
--- a/sys/vm/uma_core.c
+++ b/sys/vm/uma_core.c
@@ -751,6 +751,8 @@ zone_drain(uma_zone_t zone)
 
 			if (flags & UMA_SLAB_KMEM)
 				obj = kmem_object;
+			else if (flags & UMA_SLAB_KERNEL)
+				obj = kernel_object;
 			else
 				obj = NULL;
 			for (i = 0; i < keg->uk_ppera; i++)
@@ -871,6 +873,8 @@ slab_zalloc(uma_zone_t zone, int wait)
 
 				if (flags & UMA_SLAB_KMEM)
 					obj = kmem_object;
+				else if (flags & UMA_SLAB_KERNEL)
+					obj = kernel_object;
 				else
 					obj = NULL;
 				for (i = 0; i < keg->uk_ppera; i++)