diff --git a/kernel/fork.c b/kernel/fork.c
index 58f8611..7701470 100644
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -167,6 +167,7 @@
 
 static inline void free_signal_struct(struct signal_struct *sig)
 {
+	taskstats_tgid_free(sig);
 	kmem_cache_free(signal_cachep, sig);
 }