3058 noinline static int copy_clone_args_from_user(struct kernel_clone_args *kargs,  in copy_clone_args_from_user()  argument
3064 	pid_t *kset_tid = kargs->set_tid;  in copy_clone_args_from_user()
3104 	*kargs = (struct kernel_clone_args){  in copy_clone_args_from_user()
3119 			(kargs->set_tid_size * sizeof(pid_t))))  in copy_clone_args_from_user()
3122 	kargs->set_tid = kset_tid;  in copy_clone_args_from_user()
3135 static inline bool clone3_stack_valid(struct kernel_clone_args *kargs)  in clone3_stack_valid()  argument
3137 	if (kargs->stack == 0) {  in clone3_stack_valid()
3138 		if (kargs->stack_size > 0)  in clone3_stack_valid()
3141 		if (kargs->stack_size == 0)  in clone3_stack_valid()
3144 		if (!access_ok((void __user *)kargs->stack, kargs->stack_size))  in clone3_stack_valid()
3148 		kargs->stack += kargs->stack_size;  in clone3_stack_valid()
3155 static bool clone3_args_valid(struct kernel_clone_args *kargs)  in clone3_args_valid()  argument
3158 	if (kargs->flags &  in clone3_args_valid()
3166 	if (kargs->flags & (CLONE_DETACHED | (CSIGNAL & (~CLONE_NEWTIME))))  in clone3_args_valid()
3169 	if ((kargs->flags & (CLONE_SIGHAND | CLONE_CLEAR_SIGHAND)) ==  in clone3_args_valid()
3173 	if ((kargs->flags & (CLONE_THREAD | CLONE_PARENT)) &&  in clone3_args_valid()
3174 	    kargs->exit_signal)  in clone3_args_valid()
3177 	if (!clone3_stack_valid(kargs))  in clone3_args_valid()
3198 	struct kernel_clone_args kargs;  in SYSCALL_DEFINE2()  local
3201 	kargs.set_tid = set_tid;  in SYSCALL_DEFINE2()
3203 	err = copy_clone_args_from_user(&kargs, uargs, size);  in SYSCALL_DEFINE2()
3207 	if (!clone3_args_valid(&kargs))  in SYSCALL_DEFINE2()
3210 	return kernel_clone(&kargs);  in SYSCALL_DEFINE2()