diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c
index 0c3040a63ebd..f381e7c7a4d9 100644
--- a/net/ipv4/tcp.c
+++ b/net/ipv4/tcp.c
@@ -4581,6 +4581,7 @@ int tcp_abort(struct sock *sk, int err)
 	bh_unlock_sock(sk);
 	local_bh_enable();
 	tcp_write_queue_purge(sk);
+	printk("%s, %p\n", __func__, sk);
 	if (!has_current_bpf_ctx())
 		release_sock(sk);
 	return 0;
diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c
index 27140e5cdc06..0045e276c5cf 100644
--- a/net/ipv4/tcp_ipv4.c
+++ b/net/ipv4/tcp_ipv4.c
@@ -1253,6 +1253,7 @@ int tcp_md5_do_add(struct sock *sk, const union tcp_md5_addr *addr,
 			md5sig = rcu_dereference_protected(tp->md5sig_info, lockdep_sock_is_held(sk));
 			rcu_assign_pointer(tp->md5sig_info, NULL);
 			kfree_rcu(md5sig, rcu);
+			printk("%s, %p \n", __func__, md5sig);
 			return -EUSERS;
 		}
 	}
@@ -1278,6 +1279,7 @@ int tcp_md5_key_copy(struct sock *sk, const union tcp_md5_addr *addr,
 			md5sig = rcu_dereference_protected(tp->md5sig_info, lockdep_sock_is_held(sk));
 			net_warn_ratelimited("Too many TCP-MD5 keys in the system\n");
 			rcu_assign_pointer(tp->md5sig_info, NULL);
+			printk("%s, %p \n", __func__, md5sig);
 			kfree_rcu(md5sig, rcu);
 			return -EUSERS;
 		}
@@ -1299,6 +1301,7 @@ int tcp_md5_do_del(struct sock *sk, const union tcp_md5_addr *addr, int family,
 		return -ENOENT;
 	hlist_del_rcu(&key->node);
 	atomic_sub(sizeof(*key), &sk->sk_omem_alloc);
+	printk("%s, %p \n", __func__, key);
 	kfree_rcu(key, rcu);
 	return 0;
 }
@@ -1316,6 +1319,7 @@ static void tcp_clear_md5_list(struct sock *sk)
 	hlist_for_each_entry_safe(key, n, &md5sig->head, node) {
 		hlist_del_rcu(&key->node);
 		atomic_sub(sizeof(*key), &sk->sk_omem_alloc);
+		printk("%s, %p \n", __func__, key);
 		kfree_rcu(key, rcu);
 	}
 }
@@ -2318,6 +2322,7 @@ void tcp_v4_destroy_sock(struct sock *sk)
 	/* Clean up the MD5 key list, if any */
 	if (tp->md5sig_info) {
 		tcp_clear_md5_list(sk);
+		printk("%s, %p \n", __func__, tp->md5sig_info);
 		kfree_rcu(rcu_dereference_protected(tp->md5sig_info, 1), rcu);
 		tp->md5sig_info = NULL;
 		static_branch_slow_dec_deferred(&tcp_md5_needed);
diff --git a/net/ipv4/tcp_output.c b/net/ipv4/tcp_output.c
index ccfc8bbf7455..ae43546cb648 100644
--- a/net/ipv4/tcp_output.c
+++ b/net/ipv4/tcp_output.c
@@ -1101,6 +1101,7 @@ void tcp_release_cb(struct sock *sk)
 		tcp_tsq_write(sk);
 		__sock_put(sk);
 	}
+	printk("%p, %s\n", sk, __func__);
 	/* Here begins the tricky part :
 	 * We are called from release_sock() with :
 	 * 1) BH disabled