/* * net/tipc/name_table.h: Include file for TIPC name table code * * Copyright (c) 2000-2006, 2014-2015, Ericsson AB * Copyright (c) 2004-2005, 2010-2011, Wind River Systems * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are met: * * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. Neither the names of the copyright holders nor the names of its * contributors may be used to endorse or promote products derived from * this software without specific prior written permission. * * Alternatively, this software may be distributed under the terms of the * GNU General Public License ("GPL") version 2 as published by the Free * Software Foundation. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. */ #ifndef _TIPC_NAME_TABLE_H #define _TIPC_NAME_TABLE_H struct tipc_subscription; struct tipc_plist; /* * TIPC name types reserved for internal TIPC use (both current and planned) */ #define TIPC_ZM_SRV 3 /* zone master service name type */ #define TIPC_PUBL_SCOPE_NUM (TIPC_NODE_SCOPE + 1) #define TIPC_NAMETBL_SIZE 1024 /* must be a power of 2 */ /** * struct publication - info about a published (name or) name sequence * @type: name sequence type * @lower: name sequence lower bound * @upper: name sequence upper bound * @scope: scope of publication * @node: network address of publishing port's node * @ref: publishing port * @key: publication key * @nodesub_list: subscription to "node down" event (off-node publication only) * @local_list: adjacent entries in list of publications made by this node * @pport_list: adjacent entries in list of publications made by this port * @node_list: adjacent matching name seq publications with >= node scope * @cluster_list: adjacent matching name seq publications with >= cluster scope * @zone_list: adjacent matching name seq publications with >= zone scope * @rcu: RCU callback head used for deferred freeing * * Note that the node list, cluster list, and zone list are circular lists. */ struct publication { u32 type; u32 lower; u32 upper; u32 scope; u32 node; u32 ref; u32 key; struct list_head nodesub_list; struct list_head local_list; struct list_head pport_list; struct list_head node_list; struct list_head cluster_list; struct list_head zone_list; struct rcu_head rcu; }; /** * struct name_table - table containing all existing port name publications * @seq_hlist: name sequence hash lists * @publ_list: pulication lists * @local_publ_count: number of publications issued by this node */ struct name_table { struct hlist_head seq_hlist[TIPC_NAMETBL_SIZE]; struct list_head publ_list[TIPC_PUBL_SCOPE_NUM]; u32 local_publ_count; }; int tipc_nl_name_table_dump(struct sk_buff *skb, struct netlink_callback *cb); u32 tipc_nametbl_translate(struct net *net, u32 type, u32 instance, u32 *node); int tipc_nametbl_mc_translate(struct net *net, u32 type, u32 lower, u32 upper, u32 limit, struct tipc_plist *dports); struct publication *tipc_nametbl_publish(struct net *net, u32 type, u32 lower, u32 upper, u32 scope, u32 port_ref, u32 key); int tipc_nametbl_withdraw(struct net *net, u32 type, u32 lower, u32 ref, u32 key); struct publication *tipc_nametbl_insert_publ(struct net *net, u32 type, u32 lower, u32 upper, u32 scope, u32 node, u32 ref, u32 key); struct publication *tipc_nametbl_remove_publ(struct net *net, u32 type, u32 lower, u32 node, u32 ref, u32 key); void tipc_nametbl_subscribe(struct tipc_subscription *s); void tipc_nametbl_unsubscribe(struct tipc_subscription *s); int tipc_nametbl_init(struct net *net); void tipc_nametbl_stop(struct net *net); struct tipc_plist { struct list_head list; u32 port; }; static inline void tipc_plist_init(struct tipc_plist *pl) { INIT_LIST_HEAD(&pl->list); pl->port = 0; } void tipc_plist_push(struct tipc_plist *pl, u32 port); u32 tipc_plist_pop(struct tipc_plist *pl); #endif -24 07:55:53 -0700 commit690e5325b8c7d5db05fc569c0f7b888bb4248272 (patch) treeb9c39916a4397b1eb628e07e4fc6aff91219e393 /include/uapi/mtd parenta4685d2f58e2230d4e27fb2ee581d7ea35e5d046 (diff)
block: fix use after free in __blkdev_direct_IO
We can't dereference the dio structure after submitting the last bio for this request, as I/O completion might have happened before the code is run. Introduce a local is_sync variable instead. Fixes: 542ff7bf ("block: new direct I/O implementation") Signed-off-by: Christoph Hellwig <hch@lst.de> Reported-by: Matias Bjørling <m@bjorling.me> Tested-by: Matias Bjørling <m@bjorling.me> Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'include/uapi/mtd')