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Test the scenario where a socket is inserted into a sockmap with a BPF_SK_SKB_VERDICT program before TLS RX is configured. Previously sk_psock_verdict_data_ready() would call tcp_read_skb() and drain the receive queue without advancing copied_seq, causing tls_decrypt_sg() to walk a dangling frag_list pointer (use-after-free). The test drives the full vulnerable sequence and verifies that after the fix recv() returns the correct decrypted data. Signed-off-by: Xingwang Xiang <v3rdant.xiang@gmail.com> Link: https://patch.msgid.link/20260517145630.20521-3-v3rdant.xiang@gmail.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>