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Index: sys/netpfil/pf/pf_if.c
===================================================================
--- sys/netpfil/pf/pf_if.c
+++ sys/netpfil/pf/pf_if.c
@@ -841,6 +841,14 @@
kif->pfik_flags = kkif->pfik_flags;
kif->pfik_tzero = kkif->pfik_tzero;
kif->pfik_rulerefs = kkif->pfik_rulerefs;
+ /*
+ * Userspace relies on this pointer to decide if this is a group or
+ * not. We don't want to share the actual pointer, because it's
+ * useless to userspace and leaks kernel memory layout information.
+ * So instead we provide 0xdeadc0de as 'true' and NULL as 'false'.
+ */
+ kif->pfik_group =
+ kkif->pfik_group ? (struct ifg_group *)0xdeadc0de : NULL;
}
void

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