From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=100.103.45.18 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1793213781; b=CBM9ZRM0mhzCDFxhL03L0jkSvQTS4t2y9ntFcH/w6So08pB9UhDjhYyA/NZ5rvzEC9Pd 2OKsmy9sHLd1OJSlC3JRT24nNNQFXVLFq/YTFVC66xAUa8V+e3WFzPZmmumsG2Z/kBNW1 KemrGDt3Fb32RWpozni0KunKrjRp88M49c6jVG3efxeD6ZzB6x9Eonq3IWdcvLH6qeDKy E3Zf0bRJWSa75ZmQ2ZaCEpB9KbhoCyzGtvOKSO5DcE/wHmC+qQNLmWinrB2bR0ouKN9fl VNoNm3FwTeJW8UraYrPyNQq5mcMUChUMERepIRxejzbXE/FThTicSloOmoDGoCbv7+g== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1793213781; h=Received:DKIM-Signature:From:To:Cc:Subject:Date:Message-ID:X-Mailer: In-Reply-To:References:User-Agent:X-stable:X-Patchwork-Hint: MIME-Version:Content-Transfer-Encoding; bh=sN/1VqpmIRV+k+o+zTvuS4B5DUr3sOBaiE55xVc4t/M=; b=LKOwGtBT0i1m2lBD0Z282WGjTzVL5vqUlJ3/TBjJ7S0LwSznZFMiZxMIkYS7TrlZkrD4 AIjUi8HoiL0vcKiGSNppD41oOy/9KBuYWWZ95UzOtuixYXxFxSos/T6QTDzyHDvZrjfj+ UvGknhy2opIMbTUBgJTYSIOLCDS8xUbg+IhxczYJl/sMNg2qieHLxOdMwUsTJM3fiaP3G G7MHRBm/ZVNMxC50Ff0EGTY4xawXB+5aGUR0mScPc5yJGlmlBxqpQhTdxTTkarulhkGf3 C+JpFEmoh7Uudr42DD/+inaowl9mJCu5w6SHVXgrupy1yURCDaZmZIcQ2Tk9lcvdwjg== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass header.d=linuxfoundation.org header.i=@linuxfoundation.org header.a=rsa-sha256 header.s=korg header.b=ZdanG+Ol; arc=none smtp.remote-ip=100.103.45.18 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 9BE88606A327; Wed, 28 Oct 2026 18:56:21 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key, unprotected) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.a=rsa-sha256 header.s=korg header.b=ZdanG+Ol Received: by smtp.kernel.org (Postfix) with ESMTPSA id 017991F01825; Wed, 28 Oct 2026 18:56:20 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1793213781; bh=sN/1VqpmIRV+k+o+zTvuS4B5DUr3sOBaiE55xVc4t/M=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=ZdanG+Ol9WcSIJg0ZF10x+KKRtZzYPjL7MZeqqd+bAC/eQIl2edn7fUt2DB+9HQZ1 aduV1zuxj52+kMT9VKOThX0QPkmKQMVKUdWIDsXBAkToPR5RwJTWoxs62OomMnK+E7 25mb6Sy1gST36pKYw+o8Y3pZAqr9NYofFgXpw9eI= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, David Howells , Marc Dionne , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , linux-afs@lists.infradead.org, netdev@vger.kernel.org, Sasha Levin Subject: [PATCH 6.1 0583/1887] rxrpc: Fix delayed ACKs to not set the reference serial number Date: Wed, 28 Oct 2026 17:44:39 +0100 Message-ID: <20261028170512.689425732@linuxfoundation.org> X-Mailer: git-send-email 2.56.0 In-Reply-To: <20261028170459.200466217@linuxfoundation.org> References: <20261028170459.200466217@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore X-Mailing-List: netdev@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.1-stable review patch. If anyone has any objections, please let me know. ------------------ From: David Howells [ Upstream commit e7870cf13d20f56bfc19f9c3e89707c69cf104ef ] Fix the construction of delayed ACKs to not set the reference serial number as they can't be used as an RTT reference. Fixes: 17926a79320a ("[AF_RXRPC]: Provide secure RxRPC sockets for use by userspace and kernel both") Signed-off-by: David Howells cc: Marc Dionne cc: "David S. Miller" cc: Eric Dumazet cc: Jakub Kicinski cc: Paolo Abeni cc: linux-afs@lists.infradead.org cc: netdev@vger.kernel.org Signed-off-by: David S. Miller Signed-off-by: Sasha Levin --- net/rxrpc/output.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/net/rxrpc/output.c b/net/rxrpc/output.c index 08c117bc083ec..3d9032fae9d91 100644 --- a/net/rxrpc/output.c +++ b/net/rxrpc/output.c @@ -87,7 +87,7 @@ static size_t rxrpc_fill_out_ack(struct rxrpc_connection *conn, return 0; /* Barrier against rxrpc_input_data(). */ - serial = call->ackr_serial; + serial = reason == RXRPC_ACK_DELAY ? 0 : call->ackr_serial; hard_ack = READ_ONCE(call->rx_hard_ack); top = smp_load_acquire(&call->rx_top); *_hard_ack = hard_ack; -- 2.53.0