tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 00e4db51259a5f936fec1424b884f029479d3981 commit: 670d0a4b10704667765f7d18f7592993d02783aa sparse: use identifiers to define address spaces date: 8 weeks ago config: ia64-randconfig-s032-20200811 (attached as .config) compiler: ia64-linux-gcc (GCC) 9.3.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # apt-get install sparse # sparse version: v0.6.2-168-g9554805c-dirty git checkout 670d0a4b10704667765f7d18f7592993d02783aa # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=ia64 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; sparse warnings: (new ones prefixed by >>) drivers/gpu/drm/radeon/radeon_ttm.c:979:21: sparse: sparse: cast removes address space '__user' of expression drivers/gpu/drm/radeon/radeon_ttm.c:979:21: sparse: sparse: cast removes address space '__user' of expression drivers/gpu/drm/radeon/radeon_ttm.c:979:21: sparse: sparse: cast removes address space '__user' of expression drivers/gpu/drm/radeon/radeon_ttm.c:979:21: sparse: sparse: cast removes address space '__user' of expression drivers/gpu/drm/radeon/radeon_ttm.c:979:21: sparse: got unsigned int [usertype] * drivers/gpu/drm/radeon/radeon_ttm.c:979:21: sparse: sparse: cast removes address space '__user' of expression drivers/gpu/drm/radeon/radeon_ttm.c:979:21: sparse: sparse: cast removes address space '__user' of expression drivers/gpu/drm/radeon/radeon_ttm.c: note: in included file (through arch/ia64/include/asm/io.h, arch/ia64/include/asm/smp.h, arch/ia64/include/asm/topology.h, ...): include/asm-generic/io.h:225:22: sparse: sparse: incorrect type in argument 1 (different base types) @@ expected unsigned int [usertype] value @@ got restricted __le32 [usertype] @@ include/asm-generic/io.h:225:22: sparse: expected unsigned int [usertype] value include/asm-generic/io.h:225:22: sparse: got restricted __le32 [usertype] include/asm-generic/io.h:225:22: sparse: sparse: incorrect type in argument 1 (different base types) @@ expected unsigned int [usertype] value @@ got restricted __le32 [usertype] @@ include/asm-generic/io.h:225:22: sparse: expected unsigned int [usertype] value include/asm-generic/io.h:225:22: sparse: got restricted __le32 [usertype] include/asm-generic/io.h:179:15: sparse: sparse: cast to restricted __le32 -- drivers/gpu/drm/radeon/radeon_fb.c:264:22: sparse: got void *kptr drivers/gpu/drm/radeon/radeon_fb.c:271:27: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected char [noderef] __iomem *screen_base @@ got void *kptr @@ drivers/gpu/drm/radeon/radeon_fb.c:271:27: sparse: expected char [noderef] __iomem *screen_base drivers/gpu/drm/radeon/radeon_fb.c:271:27: sparse: got void *kptr vim +979 drivers/gpu/drm/radeon/radeon_ttm.c 771fe6b912fca54 Jerome Glisse 2009-06-05 782 771fe6b912fca54 Jerome Glisse 2009-06-05 @783 int radeon_ttm_init(struct radeon_device *rdev) 771fe6b912fca54 Jerome Glisse 2009-06-05 784 { 771fe6b912fca54 Jerome Glisse 2009-06-05 785 int r; 771fe6b912fca54 Jerome Glisse 2009-06-05 786 771fe6b912fca54 Jerome Glisse 2009-06-05 787 /* No others user of address space so set it to 0 */ 771fe6b912fca54 Jerome Glisse 2009-06-05 788 r = ttm_bo_device_init(&rdev->mman.bdev, 44d847b7439bdea David Herrmann 2013-08-13 789 &radeon_bo_driver, 44d847b7439bdea David Herrmann 2013-08-13 790 rdev->ddev->anon_inode->i_mapping, 8b53e1cb2728b63 Gerd Hoffmann 2019-09-05 791 rdev->ddev->vma_offset_manager, 33b3ad3788aba84 Christoph Hellwig 2019-08-15 792 dma_addressing_limited(&rdev->pdev->dev)); 771fe6b912fca54 Jerome Glisse 2009-06-05 793 if (r) { 771fe6b912fca54 Jerome Glisse 2009-06-05 794 DRM_ERROR("failed initializing buffer object driver(%d).\n", r); 771fe6b912fca54 Jerome Glisse 2009-06-05 795 return r; 771fe6b912fca54 Jerome Glisse 2009-06-05 796 } 0a0c7596c643239 Jerome Glisse 2009-12-11 797 rdev->mman.initialized = true; 4c7886791264f03 Jerome Glisse 2009-11-20 798 r = ttm_bo_init_mm(&rdev->mman.bdev, TTM_PL_VRAM, 312ea8da049a183 Jerome Glisse 2009-12-07 799 rdev->mc.real_vram_size >> PAGE_SHIFT); 771fe6b912fca54 Jerome Glisse 2009-06-05 800 if (r) { 771fe6b912fca54 Jerome Glisse 2009-06-05 801 DRM_ERROR("Failed initializing VRAM heap.\n"); 771fe6b912fca54 Jerome Glisse 2009-06-05 802 return r; 771fe6b912fca54 Jerome Glisse 2009-06-05 803 } 14eedc32a3c0ec9 Lauri Kasanen 2014-02-28 804 /* Change the size here instead of the init above so only lpfn is affected */ 14eedc32a3c0ec9 Lauri Kasanen 2014-02-28 805 radeon_ttm_set_active_vram_size(rdev, rdev->mc.visible_vram_size); 14eedc32a3c0ec9 Lauri Kasanen 2014-02-28 806 441921d5309cfe0 Daniel Vetter 2011-02-18 807 r = radeon_bo_create(rdev, 256 * 1024, PAGE_SIZE, true, 831b6966a60fe72 Maarten Lankhorst 2014-09-18 808 RADEON_GEM_DOMAIN_VRAM, 0, NULL, 4aa5b92fd48f88f Kent Russell 2017-08-08 809 NULL, &rdev->stolen_vga_memory); 771fe6b912fca54 Jerome Glisse 2009-06-05 810 if (r) { 771fe6b912fca54 Jerome Glisse 2009-06-05 811 return r; 771fe6b912fca54 Jerome Glisse 2009-06-05 812 } 4aa5b92fd48f88f Kent Russell 2017-08-08 813 r = radeon_bo_reserve(rdev->stolen_vga_memory, false); 4c7886791264f03 Jerome Glisse 2009-11-20 814 if (r) 4c7886791264f03 Jerome Glisse 2009-11-20 815 return r; 4aa5b92fd48f88f Kent Russell 2017-08-08 816 r = radeon_bo_pin(rdev->stolen_vga_memory, RADEON_GEM_DOMAIN_VRAM, NULL); 4aa5b92fd48f88f Kent Russell 2017-08-08 817 radeon_bo_unreserve(rdev->stolen_vga_memory); 771fe6b912fca54 Jerome Glisse 2009-06-05 818 if (r) { 4aa5b92fd48f88f Kent Russell 2017-08-08 819 radeon_bo_unref(&rdev->stolen_vga_memory); 771fe6b912fca54 Jerome Glisse 2009-06-05 820 return r; 771fe6b912fca54 Jerome Glisse 2009-06-05 821 } 771fe6b912fca54 Jerome Glisse 2009-06-05 822 DRM_INFO("radeon: %uM of VRAM memory ready\n", fc986034540102c Niels Ole Salscheider 2013-05-18 823 (unsigned) (rdev->mc.real_vram_size / (1024 * 1024))); 4c7886791264f03 Jerome Glisse 2009-11-20 824 r = ttm_bo_init_mm(&rdev->mman.bdev, TTM_PL_TT, 312ea8da049a183 Jerome Glisse 2009-12-07 825 rdev->mc.gtt_size >> PAGE_SHIFT); 771fe6b912fca54 Jerome Glisse 2009-06-05 826 if (r) { 771fe6b912fca54 Jerome Glisse 2009-06-05 827 DRM_ERROR("Failed initializing GTT heap.\n"); 771fe6b912fca54 Jerome Glisse 2009-06-05 828 return r; 771fe6b912fca54 Jerome Glisse 2009-06-05 829 } 771fe6b912fca54 Jerome Glisse 2009-06-05 830 DRM_INFO("radeon: %uM of GTT memory ready.\n", 3ce0a23d2d25318 Jerome Glisse 2009-09-08 831 (unsigned)(rdev->mc.gtt_size / (1024 * 1024))); fa8a123855e2006 Dave Airlie 2009-08-26 832 fa8a123855e2006 Dave Airlie 2009-08-26 833 r = radeon_ttm_debugfs_init(rdev); fa8a123855e2006 Dave Airlie 2009-08-26 834 if (r) { fa8a123855e2006 Dave Airlie 2009-08-26 835 DRM_ERROR("Failed to init debugfs\n"); fa8a123855e2006 Dave Airlie 2009-08-26 836 return r; fa8a123855e2006 Dave Airlie 2009-08-26 837 } 771fe6b912fca54 Jerome Glisse 2009-06-05 838 return 0; 771fe6b912fca54 Jerome Glisse 2009-06-05 839 } 771fe6b912fca54 Jerome Glisse 2009-06-05 840 771fe6b912fca54 Jerome Glisse 2009-06-05 841 void radeon_ttm_fini(struct radeon_device *rdev) 771fe6b912fca54 Jerome Glisse 2009-06-05 842 { 4c7886791264f03 Jerome Glisse 2009-11-20 843 int r; 4c7886791264f03 Jerome Glisse 2009-11-20 844 0a0c7596c643239 Jerome Glisse 2009-12-11 845 if (!rdev->mman.initialized) 0a0c7596c643239 Jerome Glisse 2009-12-11 846 return; 2014b5694182b54 Christian König 2013-12-18 847 radeon_ttm_debugfs_fini(rdev); 4aa5b92fd48f88f Kent Russell 2017-08-08 848 if (rdev->stolen_vga_memory) { 4aa5b92fd48f88f Kent Russell 2017-08-08 849 r = radeon_bo_reserve(rdev->stolen_vga_memory, false); 4c7886791264f03 Jerome Glisse 2009-11-20 850 if (r == 0) { 4aa5b92fd48f88f Kent Russell 2017-08-08 851 radeon_bo_unpin(rdev->stolen_vga_memory); 4aa5b92fd48f88f Kent Russell 2017-08-08 852 radeon_bo_unreserve(rdev->stolen_vga_memory); 4c7886791264f03 Jerome Glisse 2009-11-20 853 } 4aa5b92fd48f88f Kent Russell 2017-08-08 854 radeon_bo_unref(&rdev->stolen_vga_memory); 771fe6b912fca54 Jerome Glisse 2009-06-05 855 } 771fe6b912fca54 Jerome Glisse 2009-06-05 856 ttm_bo_clean_mm(&rdev->mman.bdev, TTM_PL_VRAM); 771fe6b912fca54 Jerome Glisse 2009-06-05 857 ttm_bo_clean_mm(&rdev->mman.bdev, TTM_PL_TT); 771fe6b912fca54 Jerome Glisse 2009-06-05 858 ttm_bo_device_release(&rdev->mman.bdev); 771fe6b912fca54 Jerome Glisse 2009-06-05 859 radeon_gart_fini(rdev); 0a0c7596c643239 Jerome Glisse 2009-12-11 860 rdev->mman.initialized = false; 771fe6b912fca54 Jerome Glisse 2009-06-05 861 DRM_INFO("radeon: ttm finalized\n"); 771fe6b912fca54 Jerome Glisse 2009-06-05 862 } 771fe6b912fca54 Jerome Glisse 2009-06-05 863 5359533801e3dd3 Dave Airlie 2011-03-14 864 /* this should only be called at bootup or when userspace 5359533801e3dd3 Dave Airlie 2011-03-14 865 * isn't running */ 5359533801e3dd3 Dave Airlie 2011-03-14 866 void radeon_ttm_set_active_vram_size(struct radeon_device *rdev, u64 size) 5359533801e3dd3 Dave Airlie 2011-03-14 867 { 5359533801e3dd3 Dave Airlie 2011-03-14 868 struct ttm_mem_type_manager *man; 5359533801e3dd3 Dave Airlie 2011-03-14 869 5359533801e3dd3 Dave Airlie 2011-03-14 870 if (!rdev->mman.initialized) 5359533801e3dd3 Dave Airlie 2011-03-14 871 return; 5359533801e3dd3 Dave Airlie 2011-03-14 872 5359533801e3dd3 Dave Airlie 2011-03-14 873 man = &rdev->mman.bdev.man[TTM_PL_VRAM]; 5359533801e3dd3 Dave Airlie 2011-03-14 874 /* this just adjusts TTM size idea, which sets lpfn to the correct value */ 5359533801e3dd3 Dave Airlie 2011-03-14 875 man->size = size >> PAGE_SHIFT; 5359533801e3dd3 Dave Airlie 2011-03-14 876 } 5359533801e3dd3 Dave Airlie 2011-03-14 877 2bfb0b678e48dee Souptick Joarder 2018-04-16 878 static vm_fault_t radeon_ttm_fault(struct vm_fault *vmf) 771fe6b912fca54 Jerome Glisse 2009-06-05 879 { 771fe6b912fca54 Jerome Glisse 2009-06-05 880 struct ttm_buffer_object *bo; 5876dd249e8e47c Matthew Garrett 2010-04-26 881 struct radeon_device *rdev; 2bfb0b678e48dee Souptick Joarder 2018-04-16 882 vm_fault_t ret; 771fe6b912fca54 Jerome Glisse 2009-06-05 883 11bac80004499ea Dave Jiang 2017-02-24 884 bo = (struct ttm_buffer_object *)vmf->vma->vm_private_data; 165d3448a1a0e86 Christian König 2019-09-27 885 if (bo == NULL) 771fe6b912fca54 Jerome Glisse 2009-06-05 886 return VM_FAULT_NOPAGE; 165d3448a1a0e86 Christian König 2019-09-27 887 5876dd249e8e47c Matthew Garrett 2010-04-26 888 rdev = radeon_get_rdev(bo->bdev); db7fce3983ad9b3 Christian König 2012-05-11 889 down_read(&rdev->pm.mclk_lock); 165d3448a1a0e86 Christian König 2019-09-27 890 ret = ttm_bo_vm_fault(vmf); db7fce3983ad9b3 Christian König 2012-05-11 891 up_read(&rdev->pm.mclk_lock); 2bfb0b678e48dee Souptick Joarder 2018-04-16 892 return ret; 771fe6b912fca54 Jerome Glisse 2009-06-05 893 } 771fe6b912fca54 Jerome Glisse 2009-06-05 894 165d3448a1a0e86 Christian König 2019-09-27 895 static struct vm_operations_struct radeon_ttm_vm_ops = { 165d3448a1a0e86 Christian König 2019-09-27 896 .fault = radeon_ttm_fault, 165d3448a1a0e86 Christian König 2019-09-27 897 .open = ttm_bo_vm_open, 165d3448a1a0e86 Christian König 2019-09-27 898 .close = ttm_bo_vm_close, 165d3448a1a0e86 Christian König 2019-09-27 899 .access = ttm_bo_vm_access 165d3448a1a0e86 Christian König 2019-09-27 900 }; 165d3448a1a0e86 Christian König 2019-09-27 901 771fe6b912fca54 Jerome Glisse 2009-06-05 902 int radeon_mmap(struct file *filp, struct vm_area_struct *vma) 771fe6b912fca54 Jerome Glisse 2009-06-05 903 { 771fe6b912fca54 Jerome Glisse 2009-06-05 904 int r; bed2dd84212eb01 Thomas Zimmermann 2019-02-07 905 struct drm_file *file_priv = filp->private_data; bed2dd84212eb01 Thomas Zimmermann 2019-02-07 906 struct radeon_device *rdev = file_priv->minor->dev->dev_private; 771fe6b912fca54 Jerome Glisse 2009-06-05 907 165d3448a1a0e86 Christian König 2019-09-27 908 if (rdev == NULL) 771fe6b912fca54 Jerome Glisse 2009-06-05 909 return -EINVAL; 165d3448a1a0e86 Christian König 2019-09-27 910 771fe6b912fca54 Jerome Glisse 2009-06-05 911 r = ttm_bo_mmap(filp, vma, &rdev->mman.bdev); 165d3448a1a0e86 Christian König 2019-09-27 912 if (unlikely(r != 0)) 771fe6b912fca54 Jerome Glisse 2009-06-05 913 return r; 165d3448a1a0e86 Christian König 2019-09-27 914 771fe6b912fca54 Jerome Glisse 2009-06-05 915 vma->vm_ops = &radeon_ttm_vm_ops; 771fe6b912fca54 Jerome Glisse 2009-06-05 916 return 0; 771fe6b912fca54 Jerome Glisse 2009-06-05 917 } 771fe6b912fca54 Jerome Glisse 2009-06-05 918 fa8a123855e2006 Dave Airlie 2009-08-26 919 #if defined(CONFIG_DEBUG_FS) 893d6e6e122386d Christian König 2013-12-12 920 fa8a123855e2006 Dave Airlie 2009-08-26 921 static int radeon_mm_dump_table(struct seq_file *m, void *data) fa8a123855e2006 Dave Airlie 2009-08-26 922 { fa8a123855e2006 Dave Airlie 2009-08-26 923 struct drm_info_node *node = (struct drm_info_node *)m->private; 893d6e6e122386d Christian König 2013-12-12 924 unsigned ttm_pl = *(int*)node->info_ent->data; fa8a123855e2006 Dave Airlie 2009-08-26 925 struct drm_device *dev = node->minor->dev; fa8a123855e2006 Dave Airlie 2009-08-26 926 struct radeon_device *rdev = dev->dev_private; bbbb29efa20d552 Christian König 2017-08-07 927 struct ttm_mem_type_manager *man = &rdev->mman.bdev.man[ttm_pl]; b5c3714fe878974 Daniel Vetter 2016-12-29 928 struct drm_printer p = drm_seq_file_printer(m); fa8a123855e2006 Dave Airlie 2009-08-26 929 bbbb29efa20d552 Christian König 2017-08-07 930 man->func->debug(man, &p); b5c3714fe878974 Daniel Vetter 2016-12-29 931 return 0; fa8a123855e2006 Dave Airlie 2009-08-26 932 } 893d6e6e122386d Christian König 2013-12-12 933 bbbb29efa20d552 Christian König 2017-08-07 934 893d6e6e122386d Christian König 2013-12-12 935 static int ttm_pl_vram = TTM_PL_VRAM; 893d6e6e122386d Christian König 2013-12-12 936 static int ttm_pl_tt = TTM_PL_TT; 893d6e6e122386d Christian König 2013-12-12 937 893d6e6e122386d Christian König 2013-12-12 938 static struct drm_info_list radeon_ttm_debugfs_list[] = { 893d6e6e122386d Christian König 2013-12-12 939 {"radeon_vram_mm", radeon_mm_dump_table, 0, &ttm_pl_vram}, 893d6e6e122386d Christian König 2013-12-12 940 {"radeon_gtt_mm", radeon_mm_dump_table, 0, &ttm_pl_tt}, 893d6e6e122386d Christian König 2013-12-12 941 {"ttm_page_pool", ttm_page_alloc_debugfs, 0, NULL}, 893d6e6e122386d Christian König 2013-12-12 942 #ifdef CONFIG_SWIOTLB 893d6e6e122386d Christian König 2013-12-12 943 {"ttm_dma_page_pool", ttm_dma_page_alloc_debugfs, 0, NULL} 893d6e6e122386d Christian König 2013-12-12 944 #endif 893d6e6e122386d Christian König 2013-12-12 945 }; 893d6e6e122386d Christian König 2013-12-12 946 2014b5694182b54 Christian König 2013-12-18 947 static int radeon_ttm_vram_open(struct inode *inode, struct file *filep) 2014b5694182b54 Christian König 2013-12-18 948 { 2014b5694182b54 Christian König 2013-12-18 949 struct radeon_device *rdev = inode->i_private; 2014b5694182b54 Christian König 2013-12-18 950 i_size_write(inode, rdev->mc.mc_vram_size); 2014b5694182b54 Christian König 2013-12-18 951 filep->private_data = inode->i_private; 2014b5694182b54 Christian König 2013-12-18 952 return 0; 2014b5694182b54 Christian König 2013-12-18 953 } 2014b5694182b54 Christian König 2013-12-18 954 2014b5694182b54 Christian König 2013-12-18 955 static ssize_t radeon_ttm_vram_read(struct file *f, char __user *buf, 2014b5694182b54 Christian König 2013-12-18 956 size_t size, loff_t *pos) 2014b5694182b54 Christian König 2013-12-18 957 { 2014b5694182b54 Christian König 2013-12-18 958 struct radeon_device *rdev = f->private_data; 2014b5694182b54 Christian König 2013-12-18 959 ssize_t result = 0; 2014b5694182b54 Christian König 2013-12-18 960 int r; 2014b5694182b54 Christian König 2013-12-18 961 2014b5694182b54 Christian König 2013-12-18 962 if (size & 0x3 || *pos & 0x3) 2014b5694182b54 Christian König 2013-12-18 963 return -EINVAL; 2014b5694182b54 Christian König 2013-12-18 964 2014b5694182b54 Christian König 2013-12-18 965 while (size) { 2014b5694182b54 Christian König 2013-12-18 966 unsigned long flags; 2014b5694182b54 Christian König 2013-12-18 967 uint32_t value; 2014b5694182b54 Christian König 2013-12-18 968 2014b5694182b54 Christian König 2013-12-18 969 if (*pos >= rdev->mc.mc_vram_size) 2014b5694182b54 Christian König 2013-12-18 970 return result; 2014b5694182b54 Christian König 2013-12-18 971 2014b5694182b54 Christian König 2013-12-18 972 spin_lock_irqsave(&rdev->mmio_idx_lock, flags); 2014b5694182b54 Christian König 2013-12-18 973 WREG32(RADEON_MM_INDEX, ((uint32_t)*pos) | 0x80000000); 2014b5694182b54 Christian König 2013-12-18 974 if (rdev->family >= CHIP_CEDAR) 2014b5694182b54 Christian König 2013-12-18 975 WREG32(EVERGREEN_MM_INDEX_HI, *pos >> 31); 2014b5694182b54 Christian König 2013-12-18 976 value = RREG32(RADEON_MM_DATA); 2014b5694182b54 Christian König 2013-12-18 977 spin_unlock_irqrestore(&rdev->mmio_idx_lock, flags); 2014b5694182b54 Christian König 2013-12-18 978 2014b5694182b54 Christian König 2013-12-18 @979 r = put_user(value, (uint32_t *)buf); 2014b5694182b54 Christian König 2013-12-18 980 if (r) 2014b5694182b54 Christian König 2013-12-18 981 return r; 2014b5694182b54 Christian König 2013-12-18 982 2014b5694182b54 Christian König 2013-12-18 983 result += 4; 2014b5694182b54 Christian König 2013-12-18 984 buf += 4; 2014b5694182b54 Christian König 2013-12-18 985 *pos += 4; 2014b5694182b54 Christian König 2013-12-18 986 size -= 4; 2014b5694182b54 Christian König 2013-12-18 987 } 2014b5694182b54 Christian König 2013-12-18 988 2014b5694182b54 Christian König 2013-12-18 989 return result; 2014b5694182b54 Christian König 2013-12-18 990 } 2014b5694182b54 Christian König 2013-12-18 991 :::::: The code at line 979 was first introduced by commit :::::: 2014b5694182b54c781b93d26ec993f8a12bca01 drm/radeon: add VRAM debugfs access v3 :::::: TO: Christian König <christian.koenig(a)amd.com&gt; :::::: CC: Alex Deucher <alexander.deucher(a)amd.com&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org