Hi Christian, First bad commit (maybe != root cause): tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master head: 8006b911c90a4ec09958447d24c8a4c3538f5723 commit: b3ed524f84f573ece1aa2f26e9db3c34a593e0d1 [3576/7806] drm/msm: allow compile_test on !ARM config: hexagon-buildonly-randconfig-r003-20211013 (attached as .config) compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project 6c76d0101193aa4eb891a6954ff047eda2f9cf71) 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 # https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commi... git remote add linux-next https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git git fetch --no-tags linux-next master git checkout b3ed524f84f573ece1aa2f26e9db3c34a593e0d1 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 ARCH=hexagon If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>): msm_obj->vaddr = vmap(pages, obj->size >> PAGE_SHIFT, ^ VM_MAP, msm_gem_pgprot(msm_obj, PAGE_KERNEL)); ^ vunmap(msm_obj->vaddr); ^ drivers/gpu/drm/msm/msm_gem.c:777:2: note: did you mean 'kunmap'? include/linux/highmem.h:46:20: note: 'kunmap' declared here static inline void kunmap(struct page *page); ^ 3 errors generated. -- WARN_ON(register_vmap_purge_notifier(&priv->vmap_notifier)); ^ drivers/gpu/drm/msm/msm_gem_shrinker.c:224:10: note: did you mean 'register_module_notifier'? include/linux/module.h:655:5: note: 'register_module_notifier' declared here int register_module_notifier(struct notifier_block *nb); ^ WARN_ON(unregister_vmap_purge_notifier(&priv->vmap_notifier)); ^ drivers/gpu/drm/msm/msm_gem_shrinker.c:238:11: note: did you mean 'unregister_module_notifier'? include/linux/module.h:656:5: note: 'unregister_module_notifier' declared here int unregister_module_notifier(struct notifier_block *nb); ^ 2 errors generated. vim +/vmap +624 drivers/gpu/drm/msm/msm_gem.c c8afe684c95cd1 Rob Clark 2013-06-26 593 fad33f4b1073a4 Rob Clark 2017-09-15 594 static void *get_vaddr(struct drm_gem_object *obj, unsigned madv) c8afe684c95cd1 Rob Clark 2013-06-26 595 { c8afe684c95cd1 Rob Clark 2013-06-26 596 struct msm_gem_object *msm_obj = to_msm_bo(obj); 0e08270a1f01bc Sushmita Susheelendra 2017-06-13 597 int ret = 0; 0e08270a1f01bc Sushmita Susheelendra 2017-06-13 598 90643a24a7bfbe Rob Clark 2021-04-05 599 GEM_WARN_ON(!msm_gem_is_locked(obj)); e4b87d227f9e82 Rob Clark 2020-10-23 600 8b6b7d84bfce9a Daniel Vetter 2020-05-14 601 if (obj->import_attach) 8b6b7d84bfce9a Daniel Vetter 2020-05-14 602 return ERR_PTR(-ENODEV); 8b6b7d84bfce9a Daniel Vetter 2020-05-14 603 90643a24a7bfbe Rob Clark 2021-04-05 604 if (GEM_WARN_ON(msm_obj->madv > madv)) { 6a41da17e87dee Mamta Shukla 2018-10-20 605 DRM_DEV_ERROR(obj->dev->dev, "Invalid madv state: %u vs %u\n", fad33f4b1073a4 Rob Clark 2017-09-15 606 msm_obj->madv, madv); 0e08270a1f01bc Sushmita Susheelendra 2017-06-13 607 return ERR_PTR(-EBUSY); 0e08270a1f01bc Sushmita Susheelendra 2017-06-13 608 } 0e08270a1f01bc Sushmita Susheelendra 2017-06-13 609 0e08270a1f01bc Sushmita Susheelendra 2017-06-13 610 /* increment vmap_count *before* vmap() call, so shrinker can a6ae74c956e72c Rob Clark 2020-10-23 611 * check vmap_count (is_vunmapable()) outside of msm_obj lock. 0e08270a1f01bc Sushmita Susheelendra 2017-06-13 612 * This guarantees that we won't try to msm_gem_vunmap() this 0e08270a1f01bc Sushmita Susheelendra 2017-06-13 613 * same object from within the vmap() call (while we already a6ae74c956e72c Rob Clark 2020-10-23 614 * hold msm_obj lock) 0e08270a1f01bc Sushmita Susheelendra 2017-06-13 615 */ 0e08270a1f01bc Sushmita Susheelendra 2017-06-13 616 msm_obj->vmap_count++; 0e08270a1f01bc Sushmita Susheelendra 2017-06-13 617 c8afe684c95cd1 Rob Clark 2013-06-26 618 if (!msm_obj->vaddr) { c8afe684c95cd1 Rob Clark 2013-06-26 619 struct page **pages = get_pages(obj); 0e08270a1f01bc Sushmita Susheelendra 2017-06-13 620 if (IS_ERR(pages)) { 0e08270a1f01bc Sushmita Susheelendra 2017-06-13 621 ret = PTR_ERR(pages); 0e08270a1f01bc Sushmita Susheelendra 2017-06-13 622 goto fail; 0e08270a1f01bc Sushmita Susheelendra 2017-06-13 623 } c8afe684c95cd1 Rob Clark 2013-06-26 @624 msm_obj->vaddr = vmap(pages, obj->size >> PAGE_SHIFT, af9b3547079915 Jonathan Marek 2021-04-23 @625 VM_MAP, msm_gem_pgprot(msm_obj, PAGE_KERNEL)); 0e08270a1f01bc Sushmita Susheelendra 2017-06-13 626 if (msm_obj->vaddr == NULL) { 0e08270a1f01bc Sushmita Susheelendra 2017-06-13 627 ret = -ENOMEM; 0e08270a1f01bc Sushmita Susheelendra 2017-06-13 628 goto fail; c8afe684c95cd1 Rob Clark 2013-06-26 629 } 10f76165d30bf5 Rob Clark 2021-04-26 630 10f76165d30bf5 Rob Clark 2021-04-26 631 update_inactive(msm_obj); c8afe684c95cd1 Rob Clark 2013-06-26 632 } c8afe684c95cd1 Rob Clark 2013-06-26 633 0e08270a1f01bc Sushmita Susheelendra 2017-06-13 634 return msm_obj->vaddr; c8afe684c95cd1 Rob Clark 2013-06-26 635 0e08270a1f01bc Sushmita Susheelendra 2017-06-13 636 fail: e1e9db2ca79575 Rob Clark 2016-05-27 637 msm_obj->vmap_count--; 0e08270a1f01bc Sushmita Susheelendra 2017-06-13 638 return ERR_PTR(ret); 18f23049f640e2 Rob Clark 2016-05-26 639 } 18f23049f640e2 Rob Clark 2016-05-26 640 e4b87d227f9e82 Rob Clark 2020-10-23 641 void *msm_gem_get_vaddr_locked(struct drm_gem_object *obj) fad33f4b1073a4 Rob Clark 2017-09-15 642 { fad33f4b1073a4 Rob Clark 2017-09-15 643 return get_vaddr(obj, MSM_MADV_WILLNEED); fad33f4b1073a4 Rob Clark 2017-09-15 644 } fad33f4b1073a4 Rob Clark 2017-09-15 645 e4b87d227f9e82 Rob Clark 2020-10-23 646 void *msm_gem_get_vaddr(struct drm_gem_object *obj) e4b87d227f9e82 Rob Clark 2020-10-23 647 { e4b87d227f9e82 Rob Clark 2020-10-23 648 void *ret; e4b87d227f9e82 Rob Clark 2020-10-23 649 e4b87d227f9e82 Rob Clark 2020-10-23 650 msm_gem_lock(obj); e4b87d227f9e82 Rob Clark 2020-10-23 651 ret = msm_gem_get_vaddr_locked(obj); e4b87d227f9e82 Rob Clark 2020-10-23 652 msm_gem_unlock(obj); e4b87d227f9e82 Rob Clark 2020-10-23 653 e4b87d227f9e82 Rob Clark 2020-10-23 654 return ret; e4b87d227f9e82 Rob Clark 2020-10-23 655 } e4b87d227f9e82 Rob Clark 2020-10-23 656 fad33f4b1073a4 Rob Clark 2017-09-15 657 /* fad33f4b1073a4 Rob Clark 2017-09-15 658 * Don't use this! It is for the very special case of dumping fad33f4b1073a4 Rob Clark 2017-09-15 659 * submits from GPU hangs or faults, were the bo may already fad33f4b1073a4 Rob Clark 2017-09-15 660 * be MSM_MADV_DONTNEED, but we know the buffer is still on the fad33f4b1073a4 Rob Clark 2017-09-15 661 * active list. fad33f4b1073a4 Rob Clark 2017-09-15 662 */ fad33f4b1073a4 Rob Clark 2017-09-15 663 void *msm_gem_get_vaddr_active(struct drm_gem_object *obj) fad33f4b1073a4 Rob Clark 2017-09-15 664 { fad33f4b1073a4 Rob Clark 2017-09-15 665 return get_vaddr(obj, __MSM_MADV_PURGED); fad33f4b1073a4 Rob Clark 2017-09-15 666 } fad33f4b1073a4 Rob Clark 2017-09-15 667 e4b87d227f9e82 Rob Clark 2020-10-23 668 void msm_gem_put_vaddr_locked(struct drm_gem_object *obj) 18f23049f640e2 Rob Clark 2016-05-26 669 { 0e08270a1f01bc Sushmita Susheelendra 2017-06-13 670 struct msm_gem_object *msm_obj = to_msm_bo(obj); 0e08270a1f01bc Sushmita Susheelendra 2017-06-13 671 90643a24a7bfbe Rob Clark 2021-04-05 672 GEM_WARN_ON(!msm_gem_is_locked(obj)); 90643a24a7bfbe Rob Clark 2021-04-05 673 GEM_WARN_ON(msm_obj->vmap_count < 1); e4b87d227f9e82 Rob Clark 2020-10-23 674 0e08270a1f01bc Sushmita Susheelendra 2017-06-13 675 msm_obj->vmap_count--; e4b87d227f9e82 Rob Clark 2020-10-23 676 } e4b87d227f9e82 Rob Clark 2020-10-23 677 e4b87d227f9e82 Rob Clark 2020-10-23 678 void msm_gem_put_vaddr(struct drm_gem_object *obj) e4b87d227f9e82 Rob Clark 2020-10-23 679 { e4b87d227f9e82 Rob Clark 2020-10-23 680 msm_gem_lock(obj); e4b87d227f9e82 Rob Clark 2020-10-23 681 msm_gem_put_vaddr_locked(obj); a6ae74c956e72c Rob Clark 2020-10-23 682 msm_gem_unlock(obj); 18f23049f640e2 Rob Clark 2016-05-26 683 } 18f23049f640e2 Rob Clark 2016-05-26 684 4cd33c48ea25ba Rob Clark 2016-05-17 685 /* Update madvise status, returns true if not purged, else 4cd33c48ea25ba Rob Clark 2016-05-17 686 * false or -errno. 4cd33c48ea25ba Rob Clark 2016-05-17 687 */ 4cd33c48ea25ba Rob Clark 2016-05-17 688 int msm_gem_madvise(struct drm_gem_object *obj, unsigned madv) 4cd33c48ea25ba Rob Clark 2016-05-17 689 { 4cd33c48ea25ba Rob Clark 2016-05-17 690 struct msm_gem_object *msm_obj = to_msm_bo(obj); 4cd33c48ea25ba Rob Clark 2016-05-17 691 a6ae74c956e72c Rob Clark 2020-10-23 692 msm_gem_lock(obj); 4cd33c48ea25ba Rob Clark 2016-05-17 693 4cd33c48ea25ba Rob Clark 2016-05-17 694 if (msm_obj->madv != __MSM_MADV_PURGED) 4cd33c48ea25ba Rob Clark 2016-05-17 695 msm_obj->madv = madv; 4cd33c48ea25ba Rob Clark 2016-05-17 696 0e08270a1f01bc Sushmita Susheelendra 2017-06-13 697 madv = msm_obj->madv; 0e08270a1f01bc Sushmita Susheelendra 2017-06-13 698 3edfa30f2340e6 Rob Clark 2020-11-16 699 /* If the obj is inactive, we might need to move it 3edfa30f2340e6 Rob Clark 2020-11-16 700 * between inactive lists 3edfa30f2340e6 Rob Clark 2020-11-16 701 */ 3edfa30f2340e6 Rob Clark 2020-11-16 702 if (msm_obj->active_count == 0) 3edfa30f2340e6 Rob Clark 2020-11-16 703 update_inactive(msm_obj); 3edfa30f2340e6 Rob Clark 2020-11-16 704 a6ae74c956e72c Rob Clark 2020-10-23 705 msm_gem_unlock(obj); 0e08270a1f01bc Sushmita Susheelendra 2017-06-13 706 0e08270a1f01bc Sushmita Susheelendra 2017-06-13 707 return (madv != __MSM_MADV_PURGED); 4cd33c48ea25ba Rob Clark 2016-05-17 708 } 4cd33c48ea25ba Rob Clark 2016-05-17 709 599089c6af6830 Rob Clark 2020-10-23 710 void msm_gem_purge(struct drm_gem_object *obj) 68209390f11603 Rob Clark 2016-05-17 711 { 68209390f11603 Rob Clark 2016-05-17 712 struct drm_device *dev = obj->dev; 68209390f11603 Rob Clark 2016-05-17 713 struct msm_gem_object *msm_obj = to_msm_bo(obj); 68209390f11603 Rob Clark 2016-05-17 714 81d4d597d4faad Rob Clark 2021-04-05 715 GEM_WARN_ON(!msm_gem_is_locked(obj)); 90643a24a7bfbe Rob Clark 2021-04-05 716 GEM_WARN_ON(!is_purgeable(msm_obj)); 68209390f11603 Rob Clark 2016-05-17 717 20d0ae2f8c72e3 Rob Clark 2021-04-05 718 /* Get rid of any iommu mapping(s): */ 20d0ae2f8c72e3 Rob Clark 2021-04-05 719 put_iova_spaces(obj, true); 0e08270a1f01bc Sushmita Susheelendra 2017-06-13 720 599089c6af6830 Rob Clark 2020-10-23 721 msm_gem_vunmap(obj); 68209390f11603 Rob Clark 2016-05-17 722 81d4d597d4faad Rob Clark 2021-04-05 723 drm_vma_node_unmap(&obj->vma_node, dev->anon_inode->i_mapping); 81d4d597d4faad Rob Clark 2021-04-05 724 68209390f11603 Rob Clark 2016-05-17 725 put_pages(obj); 68209390f11603 Rob Clark 2016-05-17 726 9b73bde39cf24b Iskren Chernev 2020-11-26 727 put_iova_vmas(obj); 9b73bde39cf24b Iskren Chernev 2020-11-26 728 68209390f11603 Rob Clark 2016-05-17 729 msm_obj->madv = __MSM_MADV_PURGED; 25ed38b3ed2691 Rob Clark 2021-04-02 730 update_inactive(msm_obj); 68209390f11603 Rob Clark 2016-05-17 731 68209390f11603 Rob Clark 2016-05-17 732 drm_gem_free_mmap_offset(obj); 68209390f11603 Rob Clark 2016-05-17 733 68209390f11603 Rob Clark 2016-05-17 734 /* Our goal here is to return as much of the memory as 68209390f11603 Rob Clark 2016-05-17 735 * is possible back to the system as we are called from OOM. 68209390f11603 Rob Clark 2016-05-17 736 * To do this we must instruct the shmfs to drop all of its 68209390f11603 Rob Clark 2016-05-17 737 * backing pages, *now*. 68209390f11603 Rob Clark 2016-05-17 738 */ 68209390f11603 Rob Clark 2016-05-17 739 shmem_truncate_range(file_inode(obj->filp), 0, (loff_t)-1); 68209390f11603 Rob Clark 2016-05-17 740 68209390f11603 Rob Clark 2016-05-17 741 invalidate_mapping_pages(file_inode(obj->filp)->i_mapping, 68209390f11603 Rob Clark 2016-05-17 742 0, (loff_t)-1); 68209390f11603 Rob Clark 2016-05-17 743 } 68209390f11603 Rob Clark 2016-05-17 744 37c68900a252ce Lee Jones 2021-06-02 745 /* 63f17ef834284d Rob Clark 2021-04-05 746 * Unpin the backing pages and make them available to be swapped out. 63f17ef834284d Rob Clark 2021-04-05 747 */ 63f17ef834284d Rob Clark 2021-04-05 748 void msm_gem_evict(struct drm_gem_object *obj) 63f17ef834284d Rob Clark 2021-04-05 749 { 63f17ef834284d Rob Clark 2021-04-05 750 struct drm_device *dev = obj->dev; 63f17ef834284d Rob Clark 2021-04-05 751 struct msm_gem_object *msm_obj = to_msm_bo(obj); 63f17ef834284d Rob Clark 2021-04-05 752 63f17ef834284d Rob Clark 2021-04-05 753 GEM_WARN_ON(!msm_gem_is_locked(obj)); 63f17ef834284d Rob Clark 2021-04-05 754 GEM_WARN_ON(is_unevictable(msm_obj)); 63f17ef834284d Rob Clark 2021-04-05 755 GEM_WARN_ON(!msm_obj->evictable); 63f17ef834284d Rob Clark 2021-04-05 756 GEM_WARN_ON(msm_obj->active_count); 63f17ef834284d Rob Clark 2021-04-05 757 63f17ef834284d Rob Clark 2021-04-05 758 /* Get rid of any iommu mapping(s): */ 63f17ef834284d Rob Clark 2021-04-05 759 put_iova_spaces(obj, false); 63f17ef834284d Rob Clark 2021-04-05 760 63f17ef834284d Rob Clark 2021-04-05 761 drm_vma_node_unmap(&obj->vma_node, dev->anon_inode->i_mapping); 63f17ef834284d Rob Clark 2021-04-05 762 63f17ef834284d Rob Clark 2021-04-05 763 put_pages(obj); 63f17ef834284d Rob Clark 2021-04-05 764 63f17ef834284d Rob Clark 2021-04-05 765 update_inactive(msm_obj); 63f17ef834284d Rob Clark 2021-04-05 766 } 63f17ef834284d Rob Clark 2021-04-05 767 599089c6af6830 Rob Clark 2020-10-23 768 void msm_gem_vunmap(struct drm_gem_object *obj) e1e9db2ca79575 Rob Clark 2016-05-27 769 { e1e9db2ca79575 Rob Clark 2016-05-27 770 struct msm_gem_object *msm_obj = to_msm_bo(obj); e1e9db2ca79575 Rob Clark 2016-05-27 771 90643a24a7bfbe Rob Clark 2021-04-05 772 GEM_WARN_ON(!msm_gem_is_locked(obj)); 0e08270a1f01bc Sushmita Susheelendra 2017-06-13 773 90643a24a7bfbe Rob Clark 2021-04-05 774 if (!msm_obj->vaddr || GEM_WARN_ON(!is_vunmapable(msm_obj))) e1e9db2ca79575 Rob Clark 2016-05-27 775 return; e1e9db2ca79575 Rob Clark 2016-05-27 776 e1e9db2ca79575 Rob Clark 2016-05-27 @777 vunmap(msm_obj->vaddr); e1e9db2ca79575 Rob Clark 2016-05-27 778 msm_obj->vaddr = NULL; e1e9db2ca79575 Rob Clark 2016-05-27 779 } e1e9db2ca79575 Rob Clark 2016-05-27 780 :::::: The code at line 624 was first introduced by commit :::::: c8afe684c95cd17cf4f273d81af369a0fdfa5a74 drm/msm: basic KMS driver for snapdragon :::::: TO: Rob Clark <robdclark(a)gmail.com&gt; :::::: CC: Rob Clark <robdclark(a)gmail.com&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org