162 void __weak arch_release_task_struct(struct task_struct *tsk)  in arch_release_task_struct()  argument
174 static inline void free_task_struct(struct task_struct *tsk)  in free_task_struct()  argument
176 	kmem_cache_free(task_struct_cachep, tsk);  in free_task_struct()
223 static void thread_stack_delayed_free(struct task_struct *tsk)  in thread_stack_delayed_free()  argument
225 	struct vm_stack *vm_stack = tsk->stack;  in thread_stack_delayed_free()
227 	vm_stack->stack_vm_area = tsk->stack_vm_area;  in thread_stack_delayed_free()
274 static int alloc_thread_stack_node(struct task_struct *tsk, int node)  in alloc_thread_stack_node()  argument
301 		tsk->stack_vm_area = s;  in alloc_thread_stack_node()
302 		tsk->stack = stack;  in alloc_thread_stack_node()
329 	tsk->stack_vm_area = vm;  in alloc_thread_stack_node()
331 	tsk->stack = stack;  in alloc_thread_stack_node()
335 static void free_thread_stack(struct task_struct *tsk)  in free_thread_stack()  argument
337 	if (!try_release_thread_stack_to_cache(tsk->stack_vm_area))  in free_thread_stack()
338 		thread_stack_delayed_free(tsk);  in free_thread_stack()
340 	tsk->stack = NULL;  in free_thread_stack()
341 	tsk->stack_vm_area = NULL;  in free_thread_stack()
351 static void thread_stack_delayed_free(struct task_struct *tsk)  in thread_stack_delayed_free()  argument
353 	struct rcu_head *rh = tsk->stack;  in thread_stack_delayed_free()
358 static int alloc_thread_stack_node(struct task_struct *tsk, int node)  in alloc_thread_stack_node()  argument
364 		tsk->stack = kasan_reset_tag(page_address(page));  in alloc_thread_stack_node()
370 static void free_thread_stack(struct task_struct *tsk)  in free_thread_stack()  argument
372 	thread_stack_delayed_free(tsk);  in free_thread_stack()
373 	tsk->stack = NULL;  in free_thread_stack()
386 static void thread_stack_delayed_free(struct task_struct *tsk)  in thread_stack_delayed_free()  argument
388 	struct rcu_head *rh = tsk->stack;  in thread_stack_delayed_free()
393 static int alloc_thread_stack_node(struct task_struct *tsk, int node)  in alloc_thread_stack_node()  argument
398 	tsk->stack = stack;  in alloc_thread_stack_node()
402 static void free_thread_stack(struct task_struct *tsk)  in free_thread_stack()  argument
404 	thread_stack_delayed_free(tsk);  in free_thread_stack()
405 	tsk->stack = NULL;  in free_thread_stack()
419 static int alloc_thread_stack_node(struct task_struct *tsk, int node)  in alloc_thread_stack_node()  argument
423 	stack = arch_alloc_thread_stack_node(tsk, node);  in alloc_thread_stack_node()
424 	tsk->stack = stack;  in alloc_thread_stack_node()
428 static void free_thread_stack(struct task_struct *tsk)  in free_thread_stack()  argument
430 	arch_free_thread_stack(tsk);  in free_thread_stack()
431 	tsk->stack = NULL;  in free_thread_stack()
488 static void account_kernel_stack(struct task_struct *tsk, int account)  in account_kernel_stack()  argument
491 		struct vm_struct *vm = task_stack_vm_area(tsk);  in account_kernel_stack()
498 		void *stack = task_stack_page(tsk);  in account_kernel_stack()
506 void exit_task_stack_account(struct task_struct *tsk)  in exit_task_stack_account()  argument
508 	account_kernel_stack(tsk, -1);  in exit_task_stack_account()
514 		vm = task_stack_vm_area(tsk);  in exit_task_stack_account()
520 static void release_task_stack(struct task_struct *tsk)  in release_task_stack()  argument
522 	if (WARN_ON(READ_ONCE(tsk->__state) != TASK_DEAD))  in release_task_stack()
525 	free_thread_stack(tsk);  in release_task_stack()
529 void put_task_stack(struct task_struct *tsk)  in put_task_stack()  argument
531 	if (refcount_dec_and_test(&tsk->stack_refcount))  in put_task_stack()
532 		release_task_stack(tsk);  in put_task_stack()
536 void free_task(struct task_struct *tsk)  in free_task()  argument
538 	release_user_cpus_ptr(tsk);  in free_task()
539 	scs_release(tsk);  in free_task()
546 	release_task_stack(tsk);  in free_task()
552 	WARN_ON_ONCE(refcount_read(&tsk->stack_refcount) != 0);  in free_task()
554 	rt_mutex_debug_task_free(tsk);  in free_task()
555 	ftrace_graph_exit_task(tsk);  in free_task()
556 	arch_release_task_struct(tsk);  in free_task()
557 	if (tsk->flags & PF_KTHREAD)  in free_task()
558 		free_kthread_struct(tsk);  in free_task()
559 	free_task_struct(tsk);  in free_task()
830 void __put_task_struct(struct task_struct *tsk)  in __put_task_struct()  argument
832 	WARN_ON(!tsk->exit_state);  in __put_task_struct()
833 	WARN_ON(refcount_read(&tsk->usage));  in __put_task_struct()
834 	WARN_ON(tsk == current);  in __put_task_struct()
836 	io_uring_free(tsk);  in __put_task_struct()
837 	cgroup_free(tsk);  in __put_task_struct()
838 	task_numa_free(tsk, true);  in __put_task_struct()
839 	security_task_free(tsk);  in __put_task_struct()
840 	bpf_task_storage_free(tsk);  in __put_task_struct()
841 	exit_creds(tsk);  in __put_task_struct()
842 	delayacct_tsk_free(tsk);  in __put_task_struct()
843 	put_signal_struct(tsk->signal);  in __put_task_struct()
844 	sched_core_free(tsk);  in __put_task_struct()
845 	free_task(tsk);  in __put_task_struct()
951 void set_task_stack_end_magic(struct task_struct *tsk)  in set_task_stack_end_magic()  argument
955 	stackend = end_of_stack(tsk);  in set_task_stack_end_magic()
961 	struct task_struct *tsk;  in dup_task_struct()  local
966 	tsk = alloc_task_struct_node(node);  in dup_task_struct()
967 	if (!tsk)  in dup_task_struct()
970 	err = arch_dup_task_struct(tsk, orig);  in dup_task_struct()
974 	err = alloc_thread_stack_node(tsk, node);  in dup_task_struct()
979 	refcount_set(&tsk->stack_refcount, 1);  in dup_task_struct()
981 	account_kernel_stack(tsk, 1);  in dup_task_struct()
983 	err = scs_prepare(tsk, node);  in dup_task_struct()
994 	tsk->seccomp.filter = NULL;  in dup_task_struct()
997 	setup_thread_stack(tsk, orig);  in dup_task_struct()
998 	clear_user_return_notifier(tsk);  in dup_task_struct()
999 	clear_tsk_need_resched(tsk);  in dup_task_struct()
1000 	set_task_stack_end_magic(tsk);  in dup_task_struct()
1001 	clear_syscall_work_syscall_user_dispatch(tsk);  in dup_task_struct()
1004 	tsk->stack_canary = get_random_canary();  in dup_task_struct()
1007 		tsk->cpus_ptr = &tsk->cpus_mask;  in dup_task_struct()
1008 	dup_user_cpus_ptr(tsk, orig, node);  in dup_task_struct()
1014 	refcount_set(&tsk->rcu_users, 2);  in dup_task_struct()
1016 	refcount_set(&tsk->usage, 1);  in dup_task_struct()
1018 	tsk->btrace_seq = 0;  in dup_task_struct()
1020 	tsk->splice_pipe = NULL;  in dup_task_struct()
1021 	tsk->task_frag.page = NULL;  in dup_task_struct()
1022 	tsk->wake_q.next = NULL;  in dup_task_struct()
1023 	tsk->worker_private = NULL;  in dup_task_struct()
1025 	kcov_task_init(tsk);  in dup_task_struct()
1026 	kmsan_task_create(tsk);  in dup_task_struct()
1027 	kmap_local_fork(tsk);  in dup_task_struct()
1030 	tsk->fail_nth = 0;  in dup_task_struct()
1034 	tsk->throttle_queue = NULL;  in dup_task_struct()
1035 	tsk->use_memdelay = 0;  in dup_task_struct()
1039 	tsk->pasid_activated = 0;  in dup_task_struct()
1043 	tsk->active_memcg = NULL;  in dup_task_struct()
1047 	tsk->reported_split_lock = 0;  in dup_task_struct()
1050 	return tsk;  in dup_task_struct()
1053 	exit_task_stack_account(tsk);  in dup_task_struct()
1054 	free_thread_stack(tsk);  in dup_task_struct()
1056 	free_task_struct(tsk);  in dup_task_struct()
1410 static void complete_vfork_done(struct task_struct *tsk)  in complete_vfork_done()  argument
1414 	task_lock(tsk);  in complete_vfork_done()
1415 	vfork = tsk->vfork_done;  in complete_vfork_done()
1417 		tsk->vfork_done = NULL;  in complete_vfork_done()
1420 	task_unlock(tsk);  in complete_vfork_done()
1456 static void mm_release(struct task_struct *tsk, struct mm_struct *mm)  in mm_release()  argument
1458 	uprobe_free_utask(tsk);  in mm_release()
1461 	deactivate_mm(tsk, mm);  in mm_release()
1468 	if (tsk->clear_child_tid) {  in mm_release()
1474 			put_user(0, tsk->clear_child_tid);  in mm_release()
1475 			do_futex(tsk->clear_child_tid, FUTEX_WAKE,  in mm_release()
1478 		tsk->clear_child_tid = NULL;  in mm_release()
1485 	if (tsk->vfork_done)  in mm_release()
1486 		complete_vfork_done(tsk);  in mm_release()
1489 void exit_mm_release(struct task_struct *tsk, struct mm_struct *mm)  in exit_mm_release()  argument
1491 	futex_exit_release(tsk);  in exit_mm_release()
1492 	mm_release(tsk, mm);  in exit_mm_release()
1495 void exec_mm_release(struct task_struct *tsk, struct mm_struct *mm)  in exec_mm_release()  argument
1497 	futex_exec_release(tsk);  in exec_mm_release()
1498 	mm_release(tsk, mm);  in exec_mm_release()
1511 static struct mm_struct *dup_mm(struct task_struct *tsk,  in dup_mm()  argument
1523 	if (!mm_init(mm, tsk, mm->user_ns))  in dup_mm()
1548 static int copy_mm(unsigned long clone_flags, struct task_struct *tsk)  in copy_mm()  argument
1552 	tsk->min_flt = tsk->maj_flt = 0;  in copy_mm()
1553 	tsk->nvcsw = tsk->nivcsw = 0;  in copy_mm()
1555 	tsk->last_switch_count = tsk->nvcsw + tsk->nivcsw;  in copy_mm()
1556 	tsk->last_switch_time = 0;  in copy_mm()
1559 	tsk->mm = NULL;  in copy_mm()
1560 	tsk->active_mm = NULL;  in copy_mm()
1575 		mm = dup_mm(tsk, current->mm);  in copy_mm()
1580 	tsk->mm = mm;  in copy_mm()
1581 	tsk->active_mm = mm;  in copy_mm()
1585 static int copy_fs(unsigned long clone_flags, struct task_struct *tsk)  in copy_fs()  argument
1599 	tsk->fs = copy_fs_struct(fs);  in copy_fs()
1600 	if (!tsk->fs)  in copy_fs()
1605 static int copy_files(unsigned long clone_flags, struct task_struct *tsk)  in copy_files()  argument
1626 	tsk->files = newf;  in copy_files()
1632 static int copy_sighand(unsigned long clone_flags, struct task_struct *tsk)  in copy_sighand()  argument
1641 	RCU_INIT_POINTER(tsk->sighand, sig);  in copy_sighand()
1652 		flush_signal_handlers(tsk, 0);  in copy_sighand()
1681 static int copy_signal(unsigned long clone_flags, struct task_struct *tsk)  in copy_signal()  argument
1689 	tsk->signal = sig;  in copy_signal()
1699 	sig->thread_head = (struct list_head)LIST_HEAD_INIT(tsk->thread_node);  in copy_signal()
1700 	tsk->thread_node = (struct list_head)LIST_HEAD_INIT(sig->thread_head);  in copy_signal()
1703 	sig->curr_target = tsk;  in copy_signal()
1936 	struct task_struct *tsk = container_of(rhp, struct task_struct, rcu);  in __delayed_free_task()  local
1938 	free_task(tsk);  in __delayed_free_task()
1941 static __always_inline void delayed_free_task(struct task_struct *tsk)  in delayed_free_task()  argument
1944 		call_rcu(&tsk->rcu, __delayed_free_task);  in delayed_free_task()
1946 		free_task(tsk);  in delayed_free_task()
1949 static void copy_oom_score_adj(u64 clone_flags, struct task_struct *tsk)  in copy_oom_score_adj()  argument
1952 	if (!tsk->mm)  in copy_oom_score_adj()
1961 	set_bit(MMF_MULTIPROCESS, &tsk->mm->flags);  in copy_oom_score_adj()
1963 	tsk->signal->oom_score_adj = current->signal->oom_score_adj;  in copy_oom_score_adj()
1964 	tsk->signal->oom_score_adj_min = current->signal->oom_score_adj_min;  in copy_oom_score_adj()