On Sun, May 21, 2023 at 9:51 AM kernel test robot <lkp@xxxxxxxxx> wrote: > > Hi Andy, > > kernel test robot noticed the following build errors: > > [auto build test ERROR on next-20230518] > > url: https://github.com/intel-lab-lkp/linux/commits/Andy-Chiu/riscv-Rename-__switch_to_aux-fpu/20230519-005938 > base: next-20230518 > patch link: https://lore.kernel.org/r/20230518161949.11203-21-andy.chiu%40sifive.com > patch subject: [PATCH -next v20 20/26] riscv: Add prctl controls for userspace vector management > config: arm-sp7021_defconfig > compiler: clang version 17.0.0 (https://github.com/llvm/llvm-project b0fb98227c90adf2536c9ad644a74d5e92961111) > reproduce (this is a W=1 build): > wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross > chmod +x ~/bin/make.cross > # install arm cross compiling tool for clang build > # apt-get install binutils-arm-linux-gnueabi > # https://github.com/intel-lab-lkp/linux/commit/eef6095228f3323db8f2bddd5bde768976888558 > git remote add linux-review https://github.com/intel-lab-lkp/linux > git fetch --no-tags linux-review Andy-Chiu/riscv-Rename-__switch_to_aux-fpu/20230519-005938 > git checkout eef6095228f3323db8f2bddd5bde768976888558 > # save the config file > mkdir build_dir && cp config build_dir/.config > COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=arm olddefconfig > COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=arm SHELL=/bin/bash > > If you fix the issue, kindly add following tag where applicable > | Reported-by: kernel test robot <lkp@xxxxxxxxx> > | Closes: https://lore.kernel.org/oe-kbuild-all/202305210917.aS7cWlKv-lkp@xxxxxxxxx/ > > All errors (new ones prefixed by >>): > > >> kernel/sys.c:2718:11: error: call to undeclared function 'RISCV_V_SET_CONTROL'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] > error = RISCV_V_SET_CONTROL(arg2); > ^ > >> kernel/sys.c:2721:11: error: call to undeclared function 'RISCV_V_GET_CONTROL'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] > error = RISCV_V_GET_CONTROL(); > ^ > 2 errors generated. > > > vim +/RISCV_V_SET_CONTROL +2718 kernel/sys.c > > 2407 > 2408 SYSCALL_DEFINE5(prctl, int, option, unsigned long, arg2, unsigned long, arg3, > 2409 unsigned long, arg4, unsigned long, arg5) > 2410 { > 2411 struct task_struct *me = current; > 2412 unsigned char comm[sizeof(me->comm)]; > 2413 long error; > 2414 > 2415 error = security_task_prctl(option, arg2, arg3, arg4, arg5); > 2416 if (error != -ENOSYS) > 2417 return error; > 2418 > 2419 error = 0; > 2420 switch (option) { > 2421 case PR_SET_PDEATHSIG: > 2422 if (!valid_signal(arg2)) { > 2423 error = -EINVAL; > 2424 break; > 2425 } > 2426 me->pdeath_signal = arg2; > 2427 break; > 2428 case PR_GET_PDEATHSIG: > 2429 error = put_user(me->pdeath_signal, (int __user *)arg2); > 2430 break; > 2431 case PR_GET_DUMPABLE: > 2432 error = get_dumpable(me->mm); > 2433 break; > 2434 case PR_SET_DUMPABLE: > 2435 if (arg2 != SUID_DUMP_DISABLE && arg2 != SUID_DUMP_USER) { > 2436 error = -EINVAL; > 2437 break; > 2438 } > 2439 set_dumpable(me->mm, arg2); > 2440 break; > 2441 > 2442 case PR_SET_UNALIGN: > 2443 error = SET_UNALIGN_CTL(me, arg2); > 2444 break; > 2445 case PR_GET_UNALIGN: > 2446 error = GET_UNALIGN_CTL(me, arg2); > 2447 break; > 2448 case PR_SET_FPEMU: > 2449 error = SET_FPEMU_CTL(me, arg2); > 2450 break; > 2451 case PR_GET_FPEMU: > 2452 error = GET_FPEMU_CTL(me, arg2); > 2453 break; > 2454 case PR_SET_FPEXC: > 2455 error = SET_FPEXC_CTL(me, arg2); > 2456 break; > 2457 case PR_GET_FPEXC: > 2458 error = GET_FPEXC_CTL(me, arg2); > 2459 break; > 2460 case PR_GET_TIMING: > 2461 error = PR_TIMING_STATISTICAL; > 2462 break; > 2463 case PR_SET_TIMING: > 2464 if (arg2 != PR_TIMING_STATISTICAL) > 2465 error = -EINVAL; > 2466 break; > 2467 case PR_SET_NAME: > 2468 comm[sizeof(me->comm) - 1] = 0; > 2469 if (strncpy_from_user(comm, (char __user *)arg2, > 2470 sizeof(me->comm) - 1) < 0) > 2471 return -EFAULT; > 2472 set_task_comm(me, comm); > 2473 proc_comm_connector(me); > 2474 break; > 2475 case PR_GET_NAME: > 2476 get_task_comm(comm, me); > 2477 if (copy_to_user((char __user *)arg2, comm, sizeof(comm))) > 2478 return -EFAULT; > 2479 break; > 2480 case PR_GET_ENDIAN: > 2481 error = GET_ENDIAN(me, arg2); > 2482 break; > 2483 case PR_SET_ENDIAN: > 2484 error = SET_ENDIAN(me, arg2); > 2485 break; > 2486 case PR_GET_SECCOMP: > 2487 error = prctl_get_seccomp(); > 2488 break; > 2489 case PR_SET_SECCOMP: > 2490 error = prctl_set_seccomp(arg2, (char __user *)arg3); > 2491 break; > 2492 case PR_GET_TSC: > 2493 error = GET_TSC_CTL(arg2); > 2494 break; > 2495 case PR_SET_TSC: > 2496 error = SET_TSC_CTL(arg2); > 2497 break; > 2498 case PR_TASK_PERF_EVENTS_DISABLE: > 2499 error = perf_event_task_disable(); > 2500 break; > 2501 case PR_TASK_PERF_EVENTS_ENABLE: > 2502 error = perf_event_task_enable(); > 2503 break; > 2504 case PR_GET_TIMERSLACK: > 2505 if (current->timer_slack_ns > ULONG_MAX) > 2506 error = ULONG_MAX; > 2507 else > 2508 error = current->timer_slack_ns; > 2509 break; > 2510 case PR_SET_TIMERSLACK: > 2511 if (arg2 <= 0) > 2512 current->timer_slack_ns = > 2513 current->default_timer_slack_ns; > 2514 else > 2515 current->timer_slack_ns = arg2; > 2516 break; > 2517 case PR_MCE_KILL: > 2518 if (arg4 | arg5) > 2519 return -EINVAL; > 2520 switch (arg2) { > 2521 case PR_MCE_KILL_CLEAR: > 2522 if (arg3 != 0) > 2523 return -EINVAL; > 2524 current->flags &= ~PF_MCE_PROCESS; > 2525 break; > 2526 case PR_MCE_KILL_SET: > 2527 current->flags |= PF_MCE_PROCESS; > 2528 if (arg3 == PR_MCE_KILL_EARLY) > 2529 current->flags |= PF_MCE_EARLY; > 2530 else if (arg3 == PR_MCE_KILL_LATE) > 2531 current->flags &= ~PF_MCE_EARLY; > 2532 else if (arg3 == PR_MCE_KILL_DEFAULT) > 2533 current->flags &= > 2534 ~(PF_MCE_EARLY|PF_MCE_PROCESS); > 2535 else > 2536 return -EINVAL; > 2537 break; > 2538 case PR_GET_AUXV: > 2539 if (arg4 || arg5) > 2540 return -EINVAL; > 2541 error = prctl_get_auxv((void __user *)arg2, arg3); > 2542 break; > 2543 default: > 2544 return -EINVAL; > 2545 } > 2546 break; > 2547 case PR_MCE_KILL_GET: > 2548 if (arg2 | arg3 | arg4 | arg5) > 2549 return -EINVAL; > 2550 if (current->flags & PF_MCE_PROCESS) > 2551 error = (current->flags & PF_MCE_EARLY) ? > 2552 PR_MCE_KILL_EARLY : PR_MCE_KILL_LATE; > 2553 else > 2554 error = PR_MCE_KILL_DEFAULT; > 2555 break; > 2556 case PR_SET_MM: > 2557 error = prctl_set_mm(arg2, arg3, arg4, arg5); > 2558 break; > 2559 case PR_GET_TID_ADDRESS: > 2560 error = prctl_get_tid_address(me, (int __user * __user *)arg2); > 2561 break; > 2562 case PR_SET_CHILD_SUBREAPER: > 2563 me->signal->is_child_subreaper = !!arg2; > 2564 if (!arg2) > 2565 break; > 2566 > 2567 walk_process_tree(me, propagate_has_child_subreaper, NULL); > 2568 break; > 2569 case PR_GET_CHILD_SUBREAPER: > 2570 error = put_user(me->signal->is_child_subreaper, > 2571 (int __user *)arg2); > 2572 break; > 2573 case PR_SET_NO_NEW_PRIVS: > 2574 if (arg2 != 1 || arg3 || arg4 || arg5) > 2575 return -EINVAL; > 2576 > 2577 task_set_no_new_privs(current); > 2578 break; > 2579 case PR_GET_NO_NEW_PRIVS: > 2580 if (arg2 || arg3 || arg4 || arg5) > 2581 return -EINVAL; > 2582 return task_no_new_privs(current) ? 1 : 0; > 2583 case PR_GET_THP_DISABLE: > 2584 if (arg2 || arg3 || arg4 || arg5) > 2585 return -EINVAL; > 2586 error = !!test_bit(MMF_DISABLE_THP, &me->mm->flags); > 2587 break; > 2588 case PR_SET_THP_DISABLE: > 2589 if (arg3 || arg4 || arg5) > 2590 return -EINVAL; > 2591 if (mmap_write_lock_killable(me->mm)) > 2592 return -EINTR; > 2593 if (arg2) > 2594 set_bit(MMF_DISABLE_THP, &me->mm->flags); > 2595 else > 2596 clear_bit(MMF_DISABLE_THP, &me->mm->flags); > 2597 mmap_write_unlock(me->mm); > 2598 break; > 2599 case PR_MPX_ENABLE_MANAGEMENT: > 2600 case PR_MPX_DISABLE_MANAGEMENT: > 2601 /* No longer implemented: */ > 2602 return -EINVAL; > 2603 case PR_SET_FP_MODE: > 2604 error = SET_FP_MODE(me, arg2); > 2605 break; > 2606 case PR_GET_FP_MODE: > 2607 error = GET_FP_MODE(me); > 2608 break; > 2609 case PR_SVE_SET_VL: > 2610 error = SVE_SET_VL(arg2); > 2611 break; > 2612 case PR_SVE_GET_VL: > 2613 error = SVE_GET_VL(); > 2614 break; > 2615 case PR_SME_SET_VL: > 2616 error = SME_SET_VL(arg2); > 2617 break; > 2618 case PR_SME_GET_VL: > 2619 error = SME_GET_VL(); > 2620 break; > 2621 case PR_GET_SPECULATION_CTRL: > 2622 if (arg3 || arg4 || arg5) > 2623 return -EINVAL; > 2624 error = arch_prctl_spec_ctrl_get(me, arg2); > 2625 break; > 2626 case PR_SET_SPECULATION_CTRL: > 2627 if (arg4 || arg5) > 2628 return -EINVAL; > 2629 error = arch_prctl_spec_ctrl_set(me, arg2, arg3); > 2630 break; > 2631 case PR_PAC_RESET_KEYS: > 2632 if (arg3 || arg4 || arg5) > 2633 return -EINVAL; > 2634 error = PAC_RESET_KEYS(me, arg2); > 2635 break; > 2636 case PR_PAC_SET_ENABLED_KEYS: > 2637 if (arg4 || arg5) > 2638 return -EINVAL; > 2639 error = PAC_SET_ENABLED_KEYS(me, arg2, arg3); > 2640 break; > 2641 case PR_PAC_GET_ENABLED_KEYS: > 2642 if (arg2 || arg3 || arg4 || arg5) > 2643 return -EINVAL; > 2644 error = PAC_GET_ENABLED_KEYS(me); > 2645 break; > 2646 case PR_SET_TAGGED_ADDR_CTRL: > 2647 if (arg3 || arg4 || arg5) > 2648 return -EINVAL; > 2649 error = SET_TAGGED_ADDR_CTRL(arg2); > 2650 break; > 2651 case PR_GET_TAGGED_ADDR_CTRL: > 2652 if (arg2 || arg3 || arg4 || arg5) > 2653 return -EINVAL; > 2654 error = GET_TAGGED_ADDR_CTRL(); > 2655 break; > 2656 case PR_SET_IO_FLUSHER: > 2657 if (!capable(CAP_SYS_RESOURCE)) > 2658 return -EPERM; > 2659 > 2660 if (arg3 || arg4 || arg5) > 2661 return -EINVAL; > 2662 > 2663 if (arg2 == 1) > 2664 current->flags |= PR_IO_FLUSHER; > 2665 else if (!arg2) > 2666 current->flags &= ~PR_IO_FLUSHER; > 2667 else > 2668 return -EINVAL; > 2669 break; > 2670 case PR_GET_IO_FLUSHER: > 2671 if (!capable(CAP_SYS_RESOURCE)) > 2672 return -EPERM; > 2673 > 2674 if (arg2 || arg3 || arg4 || arg5) > 2675 return -EINVAL; > 2676 > 2677 error = (current->flags & PR_IO_FLUSHER) == PR_IO_FLUSHER; > 2678 break; > 2679 case PR_SET_SYSCALL_USER_DISPATCH: > 2680 error = set_syscall_user_dispatch(arg2, arg3, arg4, > 2681 (char __user *) arg5); > 2682 break; > 2683 #ifdef CONFIG_SCHED_CORE > 2684 case PR_SCHED_CORE: > 2685 error = sched_core_share_pid(arg2, arg3, arg4, arg5); > 2686 break; > 2687 #endif > 2688 case PR_SET_MDWE: > 2689 error = prctl_set_mdwe(arg2, arg3, arg4, arg5); > 2690 break; > 2691 case PR_GET_MDWE: > 2692 error = prctl_get_mdwe(arg2, arg3, arg4, arg5); > 2693 break; > 2694 case PR_SET_VMA: > 2695 error = prctl_set_vma(arg2, arg3, arg4, arg5); > 2696 break; > 2697 #ifdef CONFIG_KSM > 2698 case PR_SET_MEMORY_MERGE: > 2699 if (arg3 || arg4 || arg5) > 2700 return -EINVAL; > 2701 if (mmap_write_lock_killable(me->mm)) > 2702 return -EINTR; > 2703 > 2704 if (arg2) > 2705 error = ksm_enable_merge_any(me->mm); > 2706 else > 2707 error = ksm_disable_merge_any(me->mm); > 2708 mmap_write_unlock(me->mm); > 2709 break; > 2710 case PR_GET_MEMORY_MERGE: > 2711 if (arg2 || arg3 || arg4 || arg5) > 2712 return -EINVAL; > 2713 > 2714 error = !!test_bit(MMF_VM_MERGE_ANY, &me->mm->flags); > 2715 break; > 2716 #endif > 2717 case PR_RISCV_V_SET_CONTROL: > > 2718 error = RISCV_V_SET_CONTROL(arg2); > 2719 break; > 2720 case PR_RISCV_V_GET_CONTROL: > > 2721 error = RISCV_V_GET_CONTROL(); > 2722 break; > 2723 default: > 2724 error = -EINVAL; > 2725 break; > 2726 } > 2727 return error; > 2728 } > 2729 > > -- > 0-DAY CI Kernel Test Service > https://github.com/intel/lkp-tests/wiki This is the case that Björn mentioned in v19[1] but I was too careless to address it fully. I am going to repsin v21 and solve it (including the else-clause in processor.h). [1]: https://lore.kernel.org/all/87ttwdhljn.fsf@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx/ Thanks, Andy
