Index: head/sys/kern/vfs_subr.c
===================================================================
--- head/sys/kern/vfs_subr.c
+++ head/sys/kern/vfs_subr.c
@@ -3602,7 +3602,7 @@
 
 	if (vp->v_pollinfo != NULL)
 		return;
-	vi = uma_zalloc(vnodepoll_zone, M_WAITOK);
+	vi = uma_zalloc(vnodepoll_zone, M_WAITOK | M_ZERO);
 	mtx_init(&vi->vpi_lock, "vnode pollinfo", NULL, MTX_DEF);
 	knlist_init(&vi->vpi_selinfo.si_note, vp, vfs_knllock,
 	    vfs_knlunlock, vfs_knl_assert_locked, vfs_knl_assert_unlocked);