Index: sys/dev/hwpmc/hwpmc_mod.c
===================================================================
--- sys/dev/hwpmc/hwpmc_mod.c
+++ sys/dev/hwpmc/hwpmc_mod.c
@@ -3498,6 +3498,10 @@
 		}
 
 		error = pmclog_close(po);
+
+		po->po_flags &= ~PMC_PO_INITIAL_MAPPINGS_DONE;
+		po->po_flags &= ~PMC_PO_OWNS_LOGFILE;
+		po->po_flags &= ~PMC_PO_SHUTDOWN;
 	}
 	break;