Re: [PATCH net-next v6 09/19] net: psp: update the TCP MSS to reflect PSP packet overhead
From: Paolo Abeni <pabeni@redhat.com>
Date: 2025-08-14 13:58:27
On 8/12/25 2:29 AM, Daniel Zahka wrote:
quoted hunk ↗ jump to hunk
@@ -236,6 +237,10 @@ int psp_sock_assoc_set_tx(struct sock *sk, struct psp_dev *psd, tcp_write_collapse_fence(sk); pas->upgrade_seq = tcp_sk(sk)->rcv_nxt; + icsk = inet_csk(sk); + icsk->icsk_ext_hdr_len += psp_sk_overhead(sk);
I'm likely lost, but AFAICS the user-space can successfully call multiple times psp_sock_assoc_set_tx() on the same socket, increasing icsk->icsk_ext_hdr_len in an unbounded way. /P