diff --git a/sys/vm/vm_page.c b/sys/vm/vm_page.c
index c09d3dd0ddd0..541aa2d62d11 100644
--- a/sys/vm/vm_page.c
+++ b/sys/vm/vm_page.c
@@ -90,8 +90,10 @@ __FBSDID("$FreeBSD$");
 
 #include <sys/param.h>
 #include <sys/systm.h>
+#include <sys/conf.h>
 #include <sys/lock.h>
 #include <sys/domainset.h>
+#include <sys/kdb.h>
 #include <sys/kernel.h>
 #include <sys/limits.h>
 #include <sys/linker.h>
@@ -1708,6 +1710,9 @@ vm_page_alloc_domain_after(vm_object_t object, vm_pindex_t pindex, int domain,
 	if (object != NULL)
 		VM_OBJECT_ASSERT_WLOCKED(object);
 
+	if (dumping)
+		kdb_backtrace();
+
 again:
 	m = NULL;
 #if VM_NRESERVLEVEL > 0
@@ -1916,6 +1921,9 @@ vm_page_alloc_contig_domain(vm_object_t object, vm_pindex_t pindex, int domain,
 	}
 	KASSERT(npages > 0, ("vm_page_alloc_contig: npages is zero"));
 
+	if (dumping)
+		kdb_backtrace();
+
 	if (object != NULL) {
 		mpred = vm_radix_lookup_le(&object->rtree, pindex);
 		KASSERT(mpred == NULL || mpred->pindex != pindex,