Index: sys/geom/eli/g_eli.c
===================================================================
--- sys/geom/eli/g_eli.c
+++ sys/geom/eli/g_eli.c
@@ -63,7 +63,8 @@
 MALLOC_DEFINE(M_ELI, "eli data", "GEOM_ELI Data");
 
 SYSCTL_DECL(_kern_geom);
-SYSCTL_NODE(_kern_geom, OID_AUTO, eli, CTLFLAG_RW, 0, "GEOM_ELI stuff");
+SYSCTL_NODE(_kern_geom, OID_AUTO, eli, CTLFLAG_RW | CTLFLAG_MPSAFE, 0,
+    "GEOM_ELI stuff");
 static int g_eli_version = G_ELI_VERSION;
 SYSCTL_INT(_kern_geom_eli, OID_AUTO, version, CTLFLAG_RD, &g_eli_version, 0,
     "GELI version");