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net/tls: free record only on encryption error

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commit 635d9398178659d8ddba79dd061f9451cec0b4d1 upstream.

We cannot free record on any transient error because it leads to
losing previos data. Check socket error to know whether record must
be freed or not.

Fixes: d10523d0b3d7 ("net/tls: free the record on encryption error")
Signed-off-by: Vadim Fedorenko <vfedorenko@novek.ru>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Vadim Fedorenko 2020-05-20 11:41:44 +03:00 committed by Greg Kroah-Hartman
parent cff9e73a34
commit d12fc818b0
1 changed files with 4 additions and 2 deletions
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6
net/tls/tls_sw.c
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@ -797,9 +797,10 @@ static int bpf_exec_tx_verdict(struct sk_msg *msg, struct sock *sk,
psock = sk_psock_get(sk);
if (!psock || !policy) {
err = tls_push_record(sk, flags, record_type);
if (err && err != -EINPROGRESS) {
if (err && sk->sk_err == EBADMSG) {
*copied -= sk_msg_free(sk, msg);
tls_free_open_rec(sk);
err = -sk->sk_err;
}
if (psock)
sk_psock_put(sk, psock);
@ -825,9 +826,10 @@ static int bpf_exec_tx_verdict(struct sk_msg *msg, struct sock *sk,
switch (psock->eval) {
case __SK_PASS:
err = tls_push_record(sk, flags, record_type);
if (err && err != -EINPROGRESS) {
if (err && sk->sk_err == EBADMSG) {
*copied -= sk_msg_free(sk, msg);
tls_free_open_rec(sk);
err = -sk->sk_err;
goto out_err;
}
break;