From aeb709c767aeca996e6011133e4f7bdb2a4af652 Mon Sep 17 00:00:00 2001 From: Alexei Starovoitov Date: Wed, 30 Sep 2026 09:59:20 +0000 Subject: selftests/bpf: Add a test for objects stuck in free_by_rcu_ttrace Delete all elements of BPF_F_NO_PREALLOC hash map in one batch. The first free_bulk() starts RCU tasks trace GP and the rest of the elements are freed while it's in flight. Wait for call_rcu_ttrace_in_progress to clear in bpf_mem_cache of every cpu and check that free_by_rcu_ttrace and waiting_for_gp_ttrace lists are empty. Signed-off-by: Alexei Starovoitov Link: https://lore.kernel.org/bpf/20260930095920.601738-4-alexei.starovoitov@gmail.com Signed-off-by: Kumar Kartikeya Dwivedi --- security/selinux/include/objsec.h | 298 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 298 insertions(+) create mode 100644 security/selinux/include/objsec.h (limited to 'security/selinux/include/objsec.h') diff --git a/security/selinux/include/objsec.h b/security/selinux/include/objsec.h new file mode 100644 index 000000000..2f2156825 --- /dev/null +++ b/security/selinux/include/objsec.h @@ -0,0 +1,298 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Security-Enhanced Linux (SELinux) security module + * + * This file contains the SELinux security data structures for kernel objects. + * + * Author(s): Stephen Smalley, + * Chris Vance, + * Wayne Salamon, + * James Morris + * + * Copyright (C) 2001,2002 Networks Associates Technology, Inc. + * Copyright (C) 2003 Red Hat, Inc., James Morris + * Copyright (C) 2016 Mellanox Technologies + */ + +#ifndef _SELINUX_OBJSEC_H_ +#define _SELINUX_OBJSEC_H_ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include "flask.h" +#include "avc.h" + +struct avdc_entry { + u32 isid; /* inode SID */ + struct av_decision avd; /* av decision */ +}; + +struct cred_security_struct { + u32 osid; /* SID prior to last execve */ + u32 sid; /* current SID */ + u32 exec_sid; /* exec SID */ + u32 create_sid; /* fscreate SID */ + u32 keycreate_sid; /* keycreate SID */ + u32 sockcreate_sid; /* fscreate SID */ +} __randomize_layout; + +struct task_security_struct { +#define TSEC_AVDC_DIR_SIZE (1 << 2) + struct { + u32 sid; /* current SID for cached entries */ + u32 seqno; /* AVC sequence number */ + unsigned int dir_spot; /* dir cache index to check first */ + struct avdc_entry dir[TSEC_AVDC_DIR_SIZE]; /* dir entries */ + bool permissive_neveraudit; /* permissive and neveraudit */ + } avdcache; +} __randomize_layout; + +static inline bool task_avdcache_permnoaudit(struct task_security_struct *tsec, + u32 sid) +{ + return (tsec->avdcache.permissive_neveraudit && + sid == tsec->avdcache.sid && + tsec->avdcache.seqno == avc_policy_seqno()); +} + +enum label_initialized { + LABEL_INVALID, /* invalid or not initialized */ + LABEL_INITIALIZED, /* initialized */ + LABEL_PENDING +}; + +struct inode_security_struct { + struct inode *inode; /* back pointer to inode object */ + struct list_head list; /* list of inode_security_struct */ + u32 task_sid; /* SID of creating task */ + u32 sid; /* SID of this object */ + u16 sclass; /* security class of this object */ + unsigned char initialized; /* initialization flag */ + spinlock_t lock; +}; + +struct file_security_struct { + u32 sid; /* SID of open file description */ + u32 fown_sid; /* SID of file owner (for SIGIO) */ + u32 isid; /* SID of inode at the time of file open */ + u32 pseqno; /* Policy seqno at the time of file open */ +}; + +struct backing_file_security_layer { + struct path path; /* this layer's real path */ + u32 mounter_sid; /* SID of the mounter that opened it */ + u32 fd_sid; /* SID of its open file description */ +}; + +struct backing_file_security_struct { + u32 uf_sid; /* top-level user file fsec->sid */ + u32 layer_count; /* number of intermediate backing files */ + struct backing_file_security_layer *layers; +}; + +struct superblock_security_struct { + u32 sid; /* SID of file system superblock */ + u32 def_sid; /* default SID for labeling */ + u32 mntpoint_sid; /* SECURITY_FS_USE_MNTPOINT context for files */ + u32 creator_sid; /* SID of privileged process */ + unsigned short behavior; /* labeling behavior */ + unsigned short flags; /* which mount options were specified */ + struct mutex lock; + struct list_head isec_head; + spinlock_t isec_lock; +}; + +struct msg_security_struct { + u32 sid; /* SID of message */ +}; + +struct ipc_security_struct { + u16 sclass; /* security class of this object */ + u32 sid; /* SID of IPC resource */ +}; + +struct netif_security_struct { + const struct net *ns; /* network namespace */ + int ifindex; /* device index */ + u32 sid; /* SID for this interface */ +}; + +struct netnode_security_struct { + union { + __be32 ipv4; /* IPv4 node address */ + struct in6_addr ipv6; /* IPv6 node address */ + } addr; + u32 sid; /* SID for this node */ + u16 family; /* address family */ +}; + +struct netport_security_struct { + u32 sid; /* SID for this node */ + u16 port; /* port number */ + u8 protocol; /* transport protocol */ +}; + +struct sk_security_struct { +#ifdef CONFIG_NETLABEL + enum { /* NetLabel state */ + NLBL_UNSET = 0, + NLBL_REQUIRE, + NLBL_LABELED, + NLBL_REQSKB, + NLBL_CONNLABELED, + } nlbl_state; + struct netlbl_lsm_secattr *nlbl_secattr; /* NetLabel sec attributes */ +#endif + u32 sid; /* SID of this object */ + u32 peer_sid; /* SID of peer */ + u16 sclass; /* sock security class */ + enum { /* SCTP association state */ + SCTP_ASSOC_UNSET = 0, + SCTP_ASSOC_SET, + } sctp_assoc_state; +}; + +struct tun_security_struct { + u32 sid; /* SID for the tun device sockets */ +}; + +struct key_security_struct { + u32 sid; /* SID of key */ +}; + +struct ib_security_struct { + u32 sid; /* SID of the queue pair or MAD agent */ +}; + +struct pkey_security_struct { + u64 subnet_prefix; /* Port subnet prefix */ + u16 pkey; /* PKey number */ + u32 sid; /* SID of pkey */ +}; + +struct bpf_security_struct { + u32 sid; /* SID of bpf obj creator */ + u32 perms; /* permissions for allowed bpf token commands */ + u32 grantor_sid; /* SID of token grantor */ +}; + +struct perf_event_security_struct { + u32 sid; /* SID of perf_event obj creator */ +}; + +extern struct lsm_blob_sizes selinux_blob_sizes; +static inline struct cred_security_struct *selinux_cred(const struct cred *cred) +{ + return cred->security + selinux_blob_sizes.lbs_cred; +} + +static inline struct task_security_struct * +selinux_task(const struct task_struct *task) +{ + return task->security + selinux_blob_sizes.lbs_task; +} + +static inline struct file_security_struct *selinux_file(const struct file *file) +{ + return file->f_security + selinux_blob_sizes.lbs_file; +} + +static inline struct backing_file_security_struct * +selinux_backing_file(const struct file *backing_file) +{ + void *blob = backing_file_security(backing_file); + return blob + selinux_blob_sizes.lbs_backing_file; +} + +static inline struct inode_security_struct * +selinux_inode(const struct inode *inode) +{ + if (unlikely(!inode->i_security)) + return NULL; + return inode->i_security + selinux_blob_sizes.lbs_inode; +} + +static inline struct msg_security_struct * +selinux_msg_msg(const struct msg_msg *msg_msg) +{ + return msg_msg->security + selinux_blob_sizes.lbs_msg_msg; +} + +static inline struct ipc_security_struct * +selinux_ipc(const struct kern_ipc_perm *ipc) +{ + return ipc->security + selinux_blob_sizes.lbs_ipc; +} + +/* + * get the subjective security ID of the current task + */ +static inline u32 current_sid(void) +{ + const struct cred_security_struct *crsec = selinux_cred(current_cred()); + + return crsec->sid; +} + +static inline struct superblock_security_struct * +selinux_superblock(const struct super_block *superblock) +{ + return superblock->s_security + selinux_blob_sizes.lbs_superblock; +} + +#ifdef CONFIG_KEYS +static inline struct key_security_struct *selinux_key(const struct key *key) +{ + return key->security + selinux_blob_sizes.lbs_key; +} +#endif /* CONFIG_KEYS */ + +static inline struct sk_security_struct *selinux_sock(const struct sock *sock) +{ + return sock->sk_security + selinux_blob_sizes.lbs_sock; +} + +static inline struct tun_security_struct *selinux_tun_dev(void *security) +{ + return security + selinux_blob_sizes.lbs_tun_dev; +} + +static inline struct ib_security_struct *selinux_ib(void *ib_sec) +{ + return ib_sec + selinux_blob_sizes.lbs_ib; +} + +static inline struct perf_event_security_struct * +selinux_perf_event(void *perf_event) +{ + return perf_event + selinux_blob_sizes.lbs_perf_event; +} + +#ifdef CONFIG_BPF_SYSCALL +static inline struct bpf_security_struct * +selinux_bpf_map_security(struct bpf_map *map) +{ + return map->security + selinux_blob_sizes.lbs_bpf_map; +} + +static inline struct bpf_security_struct * +selinux_bpf_prog_security(struct bpf_prog *prog) +{ + return prog->aux->security + selinux_blob_sizes.lbs_bpf_prog; +} + +static inline struct bpf_security_struct * +selinux_bpf_token_security(struct bpf_token *token) +{ + return token->security + selinux_blob_sizes.lbs_bpf_token; +} +#endif /* CONFIG_BPF_SYSCALL */ +#endif /* _SELINUX_OBJSEC_H_ */ -- cgit v1.3.1