linux-master/kernel/fork.c

632 	int retval;
639 		retval = -EINTR;
657 	retval = ksm_fork(mm, oldmm);
658 	if (retval)
663 	retval = __mt_dup(&oldmm->mm_mt, &mm->mm_mt, GFP_KERNEL);
664 	if (unlikely(retval))
673 			retval = vma_iter_clear_gfp(&vmi, mpnt->vm_start,
675 			if (retval)
687 			retval = -EINTR;
700 		retval = vma_dup_policy(mpnt, tmp);
701 		if (retval)
704 		retval = dup_userfaultfd(tmp, &uf);
705 		if (retval)
751 			retval = copy_page_range(tmp, mpnt);
753 		if (retval) {
759 	retval = arch_dup_mmap(oldmm, mm);
762 	if (!retval) {
782 	return retval;
789 	retval = -ENOMEM;
2140 	int pidfd = -1, retval;
2215 	retval = -ERESTARTNOINTR;
2219 	retval = -ENOMEM;
2254 	retval = copy_creds(p, clone_flags);
2255 	if (retval < 0)
2258 	retval = -EAGAIN;
2271 	retval = -EAGAIN;
2323 		retval = PTR_ERR(p->mempolicy);
2360 	retval = sched_fork(clone_flags, p);
2361 	if (retval)
2364 	retval = perf_event_init_task(p, clone_flags);
2365 	if (retval)
2367 	retval = audit_alloc(p);
2368 	if (retval)
2372 	retval = security_task_alloc(p, clone_flags);
2373 	if (retval)
2375 	retval = copy_semundo(clone_flags, p);
2376 	if (retval)
2378 	retval = copy_files(clone_flags, p, args->no_files);
2379 	if (retval)
2381 	retval = copy_fs(clone_flags, p);
2382 	if (retval)
2384 	retval = copy_sighand(clone_flags, p);
2385 	if (retval)
2387 	retval = copy_signal(clone_flags, p);
2388 	if (retval)
2390 	retval = copy_mm(clone_flags, p);
2391 	if (retval)
2393 	retval = copy_namespaces(clone_flags, p);
2394 	if (retval)
2396 	retval = copy_io(clone_flags, p);
2397 	if (retval)
2399 	retval = copy_thread(p, args);
2400 	if (retval)
2409 			retval = PTR_ERR(pid);
2423 		retval = __pidfd_prepare(pid, flags, &pidfile);
2424 		if (retval < 0)
2426 		pidfd = retval;
2428 		retval = put_user(pidfd, args->pidfd);
2429 		if (retval)
2486 	retval = cgroup_can_fork(p, args);
2487 	if (retval)
2544 		retval = -ENOMEM;
2550 		retval = -EINTR;
2686 	return ERR_PTR(retval);