linux-kernel - [PATCH 5.4 38/51] net/tls: Fix flipped sign in async

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Message-Id: <20211101082509.577418454@linuxfoundation.org>
Date:   Mon,  1 Nov 2021 10:17:42 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Jakub Kicinski <kuba@...nel.org>,
        Daniel Jordan <daniel.m.jordan@...cle.com>,
        "David S. Miller" <davem@...emloft.net>
Subject: [PATCH 5.4 38/51] net/tls: Fix flipped sign in async_wait.err assignment

From: Daniel Jordan <daniel.m.jordan@...cle.com>

commit 1d9d6fd21ad4a28b16ed9ee5432ae738b9dc58aa upstream.

sk->sk_err contains a positive number, yet async_wait.err wants the
opposite.  Fix the missed sign flip, which Jakub caught by inspection.

Fixes: a42055e8d2c3 ("net/tls: Add support for async encryption of records for performance")
Suggested-by: Jakub Kicinski <kuba@...nel.org>
Signed-off-by: Daniel Jordan <daniel.m.jordan@...cle.com>
Signed-off-by: David S. Miller <davem@...emloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 net/tls/tls_sw.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/net/tls/tls_sw.c
+++ b/net/tls/tls_sw.c
@@ -456,7 +456,7 @@ static void tls_encrypt_done(struct cryp
 
 		/* If err is already set on socket, return the same code */
 		if (sk->sk_err) {
-			ctx->async_wait.err = sk->sk_err;
+			ctx->async_wait.err = -sk->sk_err;
 		} else {
 			ctx->async_wait.err = err;
 			tls_err_abort(sk, err);