172 void __weak arch_release_task_struct(struct task_struct *tsk)  in arch_release_task_struct()  argument
183 static inline void free_task_struct(struct task_struct *tsk)  in free_task_struct()  argument
185 	kmem_cache_free(task_struct_cachep, tsk);  in free_task_struct()
230 static void thread_stack_delayed_free(struct task_struct *tsk)  in thread_stack_delayed_free()  argument
232 	struct vm_stack *vm_stack = tsk->stack;  in thread_stack_delayed_free()
234 	vm_stack->stack_vm_area = tsk->stack_vm_area;  in thread_stack_delayed_free()
277 static int alloc_thread_stack_node(struct task_struct *tsk, int node)  in alloc_thread_stack_node()  argument
304 		tsk->stack_vm_area = s;  in alloc_thread_stack_node()
305 		tsk->stack = stack;  in alloc_thread_stack_node()
330 	tsk->stack_vm_area = vm;  in alloc_thread_stack_node()
332 	tsk->stack = stack;  in alloc_thread_stack_node()
336 static void free_thread_stack(struct task_struct *tsk)  in free_thread_stack()  argument
338 	if (!try_release_thread_stack_to_cache(tsk->stack_vm_area))  in free_thread_stack()
339 		thread_stack_delayed_free(tsk);  in free_thread_stack()
341 	tsk->stack = NULL;  in free_thread_stack()
342 	tsk->stack_vm_area = NULL;  in free_thread_stack()
352 static void thread_stack_delayed_free(struct task_struct *tsk)  in thread_stack_delayed_free()  argument
354 	struct rcu_head *rh = tsk->stack;  in thread_stack_delayed_free()
359 static int alloc_thread_stack_node(struct task_struct *tsk, int node)  in alloc_thread_stack_node()  argument
365 		tsk->stack = kasan_reset_tag(page_address(page));  in alloc_thread_stack_node()
371 static void free_thread_stack(struct task_struct *tsk)  in free_thread_stack()  argument
373 	thread_stack_delayed_free(tsk);  in free_thread_stack()
374 	tsk->stack = NULL;  in free_thread_stack()
387 static void thread_stack_delayed_free(struct task_struct *tsk)  in thread_stack_delayed_free()  argument
389 	struct rcu_head *rh = tsk->stack;  in thread_stack_delayed_free()
394 static int alloc_thread_stack_node(struct task_struct *tsk, int node)  in alloc_thread_stack_node()  argument
399 	tsk->stack = stack;  in alloc_thread_stack_node()
403 static void free_thread_stack(struct task_struct *tsk)  in free_thread_stack()  argument
405 	thread_stack_delayed_free(tsk);  in free_thread_stack()
406 	tsk->stack = NULL;  in free_thread_stack()
513 static void account_kernel_stack(struct task_struct *tsk, int account)  in account_kernel_stack()  argument
516 		struct vm_struct *vm = task_stack_vm_area(tsk);  in account_kernel_stack()
523 		void *stack = task_stack_page(tsk);  in account_kernel_stack()
531 void exit_task_stack_account(struct task_struct *tsk)  in exit_task_stack_account()  argument
533 	account_kernel_stack(tsk, -1);  in exit_task_stack_account()
539 		vm = task_stack_vm_area(tsk);  in exit_task_stack_account()
545 static void release_task_stack(struct task_struct *tsk)  in release_task_stack()  argument
547 	if (WARN_ON(READ_ONCE(tsk->__state) != TASK_DEAD))  in release_task_stack()
550 	free_thread_stack(tsk);  in release_task_stack()
554 void put_task_stack(struct task_struct *tsk)  in put_task_stack()  argument
556 	if (refcount_dec_and_test(&tsk->stack_refcount))  in put_task_stack()
557 		release_task_stack(tsk);  in put_task_stack()
561 void free_task(struct task_struct *tsk)  in free_task()  argument
564 	WARN_ON_ONCE(tsk->seccomp.filter);  in free_task()
566 	release_user_cpus_ptr(tsk);  in free_task()
567 	scs_release(tsk);  in free_task()
574 	release_task_stack(tsk);  in free_task()
580 	WARN_ON_ONCE(refcount_read(&tsk->stack_refcount) != 0);  in free_task()
582 	rt_mutex_debug_task_free(tsk);  in free_task()
583 	ftrace_graph_exit_task(tsk);  in free_task()
584 	arch_release_task_struct(tsk);  in free_task()
585 	if (tsk->flags & PF_KTHREAD)  in free_task()
586 		free_kthread_struct(tsk);  in free_task()
587 	bpf_task_storage_free(tsk);  in free_task()
588 	free_task_struct(tsk);  in free_task()
989 void __put_task_struct(struct task_struct *tsk)  in __put_task_struct()  argument
991 	WARN_ON(!tsk->exit_state);  in __put_task_struct()
992 	WARN_ON(refcount_read(&tsk->usage));  in __put_task_struct()
993 	WARN_ON(tsk == current);  in __put_task_struct()
995 	sched_ext_free(tsk);  in __put_task_struct()
996 	io_uring_free(tsk);  in __put_task_struct()
997 	cgroup_free(tsk);  in __put_task_struct()
998 	task_numa_free(tsk, true);  in __put_task_struct()
999 	security_task_free(tsk);  in __put_task_struct()
1000 	exit_creds(tsk);  in __put_task_struct()
1001 	delayacct_tsk_free(tsk);  in __put_task_struct()
1002 	put_signal_struct(tsk->signal);  in __put_task_struct()
1003 	sched_core_free(tsk);  in __put_task_struct()
1004 	free_task(tsk);  in __put_task_struct()
1114 void set_task_stack_end_magic(struct task_struct *tsk)  in set_task_stack_end_magic()  argument
1118 	stackend = end_of_stack(tsk);  in set_task_stack_end_magic()
1124 	struct task_struct *tsk;  in dup_task_struct()  local
1129 	tsk = alloc_task_struct_node(node);  in dup_task_struct()
1130 	if (!tsk)  in dup_task_struct()
1133 	err = arch_dup_task_struct(tsk, orig);  in dup_task_struct()
1137 	err = alloc_thread_stack_node(tsk, node);  in dup_task_struct()
1142 	refcount_set(&tsk->stack_refcount, 1);  in dup_task_struct()
1144 	account_kernel_stack(tsk, 1);  in dup_task_struct()
1146 	err = scs_prepare(tsk, node);  in dup_task_struct()
1157 	tsk->seccomp.filter = NULL;  in dup_task_struct()
1160 	setup_thread_stack(tsk, orig);  in dup_task_struct()
1161 	clear_user_return_notifier(tsk);  in dup_task_struct()
1162 	clear_tsk_need_resched(tsk);  in dup_task_struct()
1163 	set_task_stack_end_magic(tsk);  in dup_task_struct()
1164 	clear_syscall_work_syscall_user_dispatch(tsk);  in dup_task_struct()
1167 	tsk->stack_canary = get_random_canary();  in dup_task_struct()
1170 		tsk->cpus_ptr = &tsk->cpus_mask;  in dup_task_struct()
1171 	dup_user_cpus_ptr(tsk, orig, node);  in dup_task_struct()
1177 	refcount_set(&tsk->rcu_users, 2);  in dup_task_struct()
1179 	refcount_set(&tsk->usage, 1);  in dup_task_struct()
1181 	tsk->btrace_seq = 0;  in dup_task_struct()
1183 	tsk->splice_pipe = NULL;  in dup_task_struct()
1184 	tsk->task_frag.page = NULL;  in dup_task_struct()
1185 	tsk->wake_q.next = NULL;  in dup_task_struct()
1186 	tsk->worker_private = NULL;  in dup_task_struct()
1188 	kcov_task_init(tsk);  in dup_task_struct()
1189 	kmsan_task_create(tsk);  in dup_task_struct()
1190 	kmap_local_fork(tsk);  in dup_task_struct()
1193 	tsk->fail_nth = 0;  in dup_task_struct()
1197 	tsk->throttle_disk = NULL;  in dup_task_struct()
1198 	tsk->use_memdelay = 0;  in dup_task_struct()
1202 	tsk->pasid_activated = 0;  in dup_task_struct()
1206 	tsk->active_memcg = NULL;  in dup_task_struct()
1210 	tsk->reported_split_lock = 0;  in dup_task_struct()
1214 	tsk->mm_cid = -1;  in dup_task_struct()
1215 	tsk->last_mm_cid = -1;  in dup_task_struct()
1216 	tsk->mm_cid_active = 0;  in dup_task_struct()
1217 	tsk->migrate_from_cpu = -1;  in dup_task_struct()
1219 	return tsk;  in dup_task_struct()
1222 	exit_task_stack_account(tsk);  in dup_task_struct()
1223 	free_thread_stack(tsk);  in dup_task_struct()
1225 	free_task_struct(tsk);  in dup_task_struct()
1618 static void complete_vfork_done(struct task_struct *tsk)  in complete_vfork_done()  argument
1622 	task_lock(tsk);  in complete_vfork_done()
1623 	vfork = tsk->vfork_done;  in complete_vfork_done()
1625 		tsk->vfork_done = NULL;  in complete_vfork_done()
1628 	task_unlock(tsk);  in complete_vfork_done()
1664 static void mm_release(struct task_struct *tsk, struct mm_struct *mm)  in mm_release()  argument
1666 	uprobe_free_utask(tsk);  in mm_release()
1669 	deactivate_mm(tsk, mm);  in mm_release()
1676 	if (tsk->clear_child_tid) {  in mm_release()
1682 			put_user(0, tsk->clear_child_tid);  in mm_release()
1683 			do_futex(tsk->clear_child_tid, FUTEX_WAKE,  in mm_release()
1686 		tsk->clear_child_tid = NULL;  in mm_release()
1693 	if (tsk->vfork_done)  in mm_release()
1694 		complete_vfork_done(tsk);  in mm_release()
1697 void exit_mm_release(struct task_struct *tsk, struct mm_struct *mm)  in exit_mm_release()  argument
1699 	futex_exit_release(tsk);  in exit_mm_release()
1700 	mm_release(tsk, mm);  in exit_mm_release()
1703 void exec_mm_release(struct task_struct *tsk, struct mm_struct *mm)  in exec_mm_release()  argument
1705 	futex_exec_release(tsk);  in exec_mm_release()
1706 	mm_release(tsk, mm);  in exec_mm_release()
1719 static struct mm_struct *dup_mm(struct task_struct *tsk,  in dup_mm()  argument
1731 	if (!mm_init(mm, tsk, mm->user_ns))  in dup_mm()
1760 static int copy_mm(unsigned long clone_flags, struct task_struct *tsk)  in copy_mm()  argument
1764 	tsk->min_flt = tsk->maj_flt = 0;  in copy_mm()
1765 	tsk->nvcsw = tsk->nivcsw = 0;  in copy_mm()
1767 	tsk->last_switch_count = tsk->nvcsw + tsk->nivcsw;  in copy_mm()
1768 	tsk->last_switch_time = 0;  in copy_mm()
1771 	tsk->mm = NULL;  in copy_mm()
1772 	tsk->active_mm = NULL;  in copy_mm()
1787 		mm = dup_mm(tsk, current->mm);  in copy_mm()
1792 	tsk->mm = mm;  in copy_mm()
1793 	tsk->active_mm = mm;  in copy_mm()
1794 	sched_mm_cid_fork(tsk);  in copy_mm()
1798 static int copy_fs(unsigned long clone_flags, struct task_struct *tsk)  in copy_fs()  argument
1813 	tsk->fs = copy_fs_struct(fs);  in copy_fs()
1814 	if (!tsk->fs)  in copy_fs()
1819 static int copy_files(unsigned long clone_flags, struct task_struct *tsk,  in copy_files()  argument
1832 		tsk->files = NULL;  in copy_files()
1845 	tsk->files = newf;  in copy_files()
1849 static int copy_sighand(unsigned long clone_flags, struct task_struct *tsk)  in copy_sighand()  argument
1858 	RCU_INIT_POINTER(tsk->sighand, sig);  in copy_sighand()
1869 		flush_signal_handlers(tsk, 0);  in copy_sighand()
1898 static int copy_signal(unsigned long clone_flags, struct task_struct *tsk)  in copy_signal()  argument
1906 	tsk->signal = sig;  in copy_signal()
1916 	sig->thread_head = (struct list_head)LIST_HEAD_INIT(tsk->thread_node);  in copy_signal()
1917 	tsk->thread_node = (struct list_head)LIST_HEAD_INIT(sig->thread_head);  in copy_signal()
1920 	sig->curr_target = tsk;  in copy_signal()
2122 	struct task_struct *tsk = container_of(rhp, struct task_struct, rcu);  in __delayed_free_task()  local
2124 	free_task(tsk);  in __delayed_free_task()
2127 static __always_inline void delayed_free_task(struct task_struct *tsk)  in delayed_free_task()  argument
2130 		call_rcu(&tsk->rcu, __delayed_free_task);  in delayed_free_task()
2132 		free_task(tsk);  in delayed_free_task()
2135 static void copy_oom_score_adj(u64 clone_flags, struct task_struct *tsk)  in copy_oom_score_adj()  argument
2138 	if (!tsk->mm)  in copy_oom_score_adj()
2147 	set_bit(MMF_MULTIPROCESS, &tsk->mm->flags);  in copy_oom_score_adj()
2149 	tsk->signal->oom_score_adj = current->signal->oom_score_adj;  in copy_oom_score_adj()
2150 	tsk->signal->oom_score_adj_min = current->signal->oom_score_adj_min;  in copy_oom_score_adj()