Index: head/sys/ddb/db_examine.c
===================================================================
--- head/sys/ddb/db_examine.c
+++ head/sys/ddb/db_examine.c
@@ -232,9 +232,13 @@
 void
 db_print_loc_and_inst(db_addr_t loc)
 {
+	db_expr_t off;
+
 	db_printsym(loc, DB_STGY_PROC);
-	db_printf(":\t");
-	(void) db_disasm(loc, true);
+	if (db_search_symbol(loc, DB_STGY_PROC, &off) != C_DB_SYM_NULL) {
+		db_printf(":\t");
+		(void)db_disasm(loc, true);
+	}
 }
 
 /*
Index: head/sys/ddb/db_main.c
===================================================================
--- head/sys/ddb/db_main.c
+++ head/sys/ddb/db_main.c
@@ -110,7 +110,7 @@
 	diff = ~0UL;
 	match = NULL;
 	for (sym = (Elf_Sym*)symtab->start; (char*)sym < symtab->end; sym++) {
-		if (sym->st_name == 0)
+		if (sym->st_name == 0 || sym->st_shndx == SHN_UNDEF)
 			continue;
 		if (off < sym->st_value)
 			continue;