--- sysutils/lsof/files/patch-dialects_freebsd_dproc.c	(nonexistent)
+++ sysutils/lsof/files/patch-dialects_freebsd_dproc.c	(working copy)
@@ -0,0 +1,27 @@ 
+--- dialects/freebsd/dproc.c.orig	2019-05-08 09:32:25.000000000 +0200
++++ dialects/freebsd/dproc.c	2019-12-17 14:59:19.905502000 +0100
+@@ -655,7 +655,15 @@ kread(addr, buf, len)
+ 	return((br == len) ? 0 : 1);
+ }
+ 
++static int
++procstat_vm_map_reader(void *token, vm_map_entry_t addr, vm_map_entry_t dest)
++{
++	kvm_t *kd;
+ 
++	kd = (kvm_t *)token;
++	return (kvm_read(kd, (unsigned long)addr, dest, sizeof(*dest)));
++}
++
+ /*
+  * process_text() - process text information
+  */
+@@ -690,7 +698,7 @@ process_text(vm)
+ 	    if (i == 0)
+ 		e = &vmsp.vm_map.header;
+ 	    else {
+-		if (!(ka = (KA_T)e->next))
++		if (!(ka = (KA_T)vm_map_entry_read_succ(Kd, e, procstat_vm_map_reader)))
+ 		    return;
+ 		e = &vmme;
+ 		if (kread(ka, (char *)e, sizeof(vmme)))