Re: [PATCH net 1/2] net/tls: Fail tls_sw_splice_read() after a failed async decrypt

[Sabrina Dubroca <sd@queasysnail.net>]

2026-08-06, 20:44:07 -0400, Chuck Lever wrote:
> When an async decrypt fails, tls_decrypt_done() records the error in
> ctx->async_wait.err and calls tls_err_abort(), which stores it in
> sk_err. tls_sw_recvmsg() and tls_sw_read_sock() each read
> async_wait.err once they hold the reader lock and fail the call: a
> record that did not authenticate breaks the connection.
> 
> tls_sw_splice_read() has no such check, and sk_err does not stand in
> for one. tls_rx_rec_wait() tests sk_err only inside the loop it
> skips whenever a record is already parsed, and the first reader to
> reach sock_error() clears it, while async_wait.err persists. A
> splice therefore keeps delivering records on a connection that
> recvmsg() and read_sock() refuse to read.
> 
> Read async_wait.err in tls_sw_splice_read() as the other two readers
> do.
> 
> Fixes: f314bfee81b1 ("tls: rx: return the already-copied data on crypto error")
> Reviewed-by: Jakub Kicinski <kuba@kernel.org>
> Signed-off-by: Chuck Lever <cel@kernel.org>

Reviewed-by: Sabrina Dubroca <sd@queasysnail.net>

-- 
Sabrina