diff --git a/cddl/contrib/opensolaris/cmd/lockstat/lockstat.c b/cddl/contrib/opensolaris/cmd/lockstat/lockstat.c
index 84796c3b004a..a7378980bc56 100644
--- a/cddl/contrib/opensolaris/cmd/lockstat/lockstat.c
+++ b/cddl/contrib/opensolaris/cmd/lockstat/lockstat.c
@@ -215,8 +215,12 @@ static ls_event_info_t g_event_info[LS_MAX_EVENTS] = {
 	{ 'H',	"Lock",	"SX exclusive hold",			"nsec",
 	    "lockstat:::sx-release", "arg1 == 0",
 	    "lockstat:::sx-acquire" },
-	{ 'H',	"Lock",	"Unknown event (type 38)",		"units"	},
-	{ 'H',	"Lock",	"Unknown event (type 39)",		"units"	},
+	{ 'H',	"Lock",	"lockmgr shared hold",			"nsec",
+	    "lockstat:::lockmgr-release", "arg1 == 1",
+	    "lockstat:::lockmgr-acquire" },
+	{ 'H',	"Lock",	"lockmgr exclusive hold",		"nsec",
+	    "lockstat:::lockmgr-release,lockstat:::lockmgr-disown", "arg1 == 0",
+	    "lockstat:::lockmgr-acquire" },
 	{ 'H',	"Lock",	"Unknown event (type 40)",		"units"	},
 	{ 'H',	"Lock",	"Unknown event (type 41)",		"units"	},
 	{ 'H',	"Lock",	"Unknown event (type 42)",		"units"	},