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rxrpc_alloc_data_txbuf() may be called with data_align being zero in none_alloc_txbuf() and rxkad_alloc_txbuf(), data_align is supposed to be an order-based alignment value, but zero is not a valid order-based alignment value, and '~(data_align - 1)' doesn't result in a valid mask-based alignment value for __page_frag_alloc_align(). Fix it by passing a valid order-based alignment value in none_alloc_txbuf() and rxkad_alloc_txbuf(). Also use page_frag_alloc_align() expecting an order-based alignment value in rxrpc_alloc_data_txbuf() to avoid doing the alignment converting operation and to catch possible invalid alignment value in the future. Remove the 'if (data_align)' checking too, as it is always true for a valid order-based alignment value. Fixes:6b2536462f("rxrpc: Fix use of changed alignment param to page_frag_alloc_align()") Fixes:49489bb03a("rxrpc: Do zerocopy using MSG_SPLICE_PAGES and page frags") CC: Alexander Duyck <alexander.duyck@gmail.com> Signed-off-by: Yunsheng Lin <linyunsheng@huawei.com> Acked-by: David Howells <dhowells@redhat.com> Link: https://lore.kernel.org/r/20240428111640.27306-1-linyunsheng@huawei.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
86 lines
2.0 KiB
C
86 lines
2.0 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/* Null security operations.
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*
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* Copyright (C) 2016 Red Hat, Inc. All Rights Reserved.
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* Written by David Howells (dhowells@redhat.com)
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*/
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#include <net/af_rxrpc.h>
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#include "ar-internal.h"
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static int none_init_connection_security(struct rxrpc_connection *conn,
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struct rxrpc_key_token *token)
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{
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return 0;
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}
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/*
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* Allocate an appropriately sized buffer for the amount of data remaining.
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*/
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static struct rxrpc_txbuf *none_alloc_txbuf(struct rxrpc_call *call, size_t remain, gfp_t gfp)
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{
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return rxrpc_alloc_data_txbuf(call, min_t(size_t, remain, RXRPC_JUMBO_DATALEN), 1, gfp);
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}
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static int none_secure_packet(struct rxrpc_call *call, struct rxrpc_txbuf *txb)
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{
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return 0;
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}
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static int none_verify_packet(struct rxrpc_call *call, struct sk_buff *skb)
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{
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struct rxrpc_skb_priv *sp = rxrpc_skb(skb);
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sp->flags |= RXRPC_RX_VERIFIED;
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return 0;
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}
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static void none_free_call_crypto(struct rxrpc_call *call)
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{
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}
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static int none_respond_to_challenge(struct rxrpc_connection *conn,
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struct sk_buff *skb)
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{
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return rxrpc_abort_conn(conn, skb, RX_PROTOCOL_ERROR, -EPROTO,
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rxrpc_eproto_rxnull_challenge);
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}
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static int none_verify_response(struct rxrpc_connection *conn,
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struct sk_buff *skb)
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{
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return rxrpc_abort_conn(conn, skb, RX_PROTOCOL_ERROR, -EPROTO,
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rxrpc_eproto_rxnull_response);
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}
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static void none_clear(struct rxrpc_connection *conn)
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{
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}
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static int none_init(void)
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{
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return 0;
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}
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static void none_exit(void)
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{
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}
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/*
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* RxRPC Kerberos-based security
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*/
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const struct rxrpc_security rxrpc_no_security = {
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.name = "none",
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.security_index = RXRPC_SECURITY_NONE,
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.init = none_init,
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.exit = none_exit,
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.init_connection_security = none_init_connection_security,
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.free_call_crypto = none_free_call_crypto,
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.alloc_txbuf = none_alloc_txbuf,
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.secure_packet = none_secure_packet,
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.verify_packet = none_verify_packet,
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.respond_to_challenge = none_respond_to_challenge,
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.verify_response = none_verify_response,
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.clear = none_clear,
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};
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