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From: kernel test robot <lkp@intel.com>
To: Christoph Hellwig <hch@lst.de>
Cc: clang-built-linux@googlegroups.com, kbuild-all@lists.01.org,
	linux-kernel@vger.kernel.org
Subject: [hch-misc:dax-support-cleanups 6/7] drivers/gpu/drm/i915/gem/i915_gem_object.h:39:6: error: shift count >= width of type
Date: Fri, 30 Jul 2021 19:27:17 +0800	[thread overview]
Message-ID: <202107301913.YuS3URWP-lkp@intel.com> (raw)

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tree:   git://git.infradead.org/users/hch/misc.git dax-support-cleanups
head:   109fe091fac0e3958ba459e292f22f6b60eb39f0
commit: 6ee1cc412315e2a92aa1b6b57e349f84ec4b1168 [6/7] dax: pass the dax_device to bdev_dax_supported
config: x86_64-randconfig-c001-20210730 (attached as .config)
compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project 4f71f59bf3d9914188a11d0c41bedbb339d36ff5)
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
        git remote add hch-misc git://git.infradead.org/users/hch/misc.git
        git fetch --no-tags hch-misc dax-support-cleanups
        git checkout 6ee1cc412315e2a92aa1b6b57e349f84ec4b1168
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=x86_64 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>

All errors (new ones prefixed by >>):

   In file included from <built-in>:4:
   In file included from drivers/gpu/drm/i915/display/intel_dsi.h:30:
   In file included from drivers/gpu/drm/i915/display/intel_display_types.h:47:
   In file included from drivers/gpu/drm/i915/i915_drv.h:49:
   In file included from include/linux/shmem_fs.h:7:
   In file included from include/linux/mempolicy.h:11:
   include/linux/dax.h:153:39: error: unknown type name 'truct'; did you mean 'struct'?
   static inline bool bdev_dax_supported(truct dax_device *dax_dev,
                                         ^~~~~
                                         struct
   In file included from <built-in>:4:
   In file included from drivers/gpu/drm/i915/display/intel_dsi.h:30:
   In file included from drivers/gpu/drm/i915/display/intel_display_types.h:47:
   In file included from drivers/gpu/drm/i915/i915_drv.h:84:
   In file included from drivers/gpu/drm/i915/gt/intel_engine.h:17:
   In file included from drivers/gpu/drm/i915/gt/intel_gt_types.h:18:
   In file included from drivers/gpu/drm/i915/gt/uc/intel_uc.h:9:
   In file included from drivers/gpu/drm/i915/gt/uc/intel_guc.h:17:
   In file included from drivers/gpu/drm/i915/i915_vma.h:34:
>> drivers/gpu/drm/i915/gem/i915_gem_object.h:39:6: error: shift count >= width of type [-Werror,-Wshift-count-overflow]
           if (overflows_type(size, obj->base.size))
               ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   drivers/gpu/drm/i915/i915_utils.h:125:32: note: expanded from macro 'overflows_type'
           (sizeof(x) > sizeof(T) && (x) >> BITS_PER_TYPE(T))
                                         ^  ~~~~~~~~~~~~~~~~
   2 errors generated.
--
   In file included from drivers/gpu/drm/i915/gem/i915_gem_internal.c:11:
   In file included from drivers/gpu/drm/i915/i915_drv.h:49:
   In file included from include/linux/shmem_fs.h:7:
   In file included from include/linux/mempolicy.h:11:
   include/linux/dax.h:153:39: error: unknown type name 'truct'; did you mean 'struct'?
   static inline bool bdev_dax_supported(truct dax_device *dax_dev,
                                         ^~~~~
                                         struct
   In file included from drivers/gpu/drm/i915/gem/i915_gem_internal.c:11:
   In file included from drivers/gpu/drm/i915/i915_drv.h:84:
   In file included from drivers/gpu/drm/i915/gt/intel_engine.h:17:
   In file included from drivers/gpu/drm/i915/gt/intel_gt_types.h:18:
   In file included from drivers/gpu/drm/i915/gt/uc/intel_uc.h:9:
   In file included from drivers/gpu/drm/i915/gt/uc/intel_guc.h:17:
   In file included from drivers/gpu/drm/i915/i915_vma.h:34:
>> drivers/gpu/drm/i915/gem/i915_gem_object.h:39:6: error: shift count >= width of type [-Werror,-Wshift-count-overflow]
           if (overflows_type(size, obj->base.size))
               ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   drivers/gpu/drm/i915/i915_utils.h:125:32: note: expanded from macro 'overflows_type'
           (sizeof(x) > sizeof(T) && (x) >> BITS_PER_TYPE(T))
                                         ^  ~~~~~~~~~~~~~~~~
>> drivers/gpu/drm/i915/gem/i915_gem_internal.c:172:6: error: shift count >= width of type [-Werror,-Wshift-count-overflow]
           if (overflows_type(size, obj->base.size))
               ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   drivers/gpu/drm/i915/i915_utils.h:125:32: note: expanded from macro 'overflows_type'
           (sizeof(x) > sizeof(T) && (x) >> BITS_PER_TYPE(T))
                                         ^  ~~~~~~~~~~~~~~~~
   3 errors generated.
--
   In file included from drivers/gpu/drm/i915/i915_gem.c:32:
   In file included from include/linux/shmem_fs.h:7:
   In file included from include/linux/mempolicy.h:11:
   include/linux/dax.h:153:39: error: unknown type name 'truct'; did you mean 'struct'?
   static inline bool bdev_dax_supported(truct dax_device *dax_dev,
                                         ^~~~~
                                         struct
   In file included from drivers/gpu/drm/i915/i915_gem.c:38:
>> include/linux/mman.h:158:9: error: division by zero is undefined [-Werror,-Wdivision-by-zero]
                  _calc_vm_trans(flags, MAP_SYNC,       VM_SYNC      ) |
                  ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   include/linux/mman.h:135:21: note: expanded from macro '_calc_vm_trans'
      : ((x) & (bit1)) / ((bit1) / (bit2))))
                       ^ ~~~~~~~~~~~~~~~~~
   In file included from drivers/gpu/drm/i915/i915_gem.c:44:
   In file included from drivers/gpu/drm/i915/gem/i915_gem_context.h:12:
   In file included from drivers/gpu/drm/i915/gt/intel_context.h:14:
   In file included from drivers/gpu/drm/i915/i915_drv.h:84:
   In file included from drivers/gpu/drm/i915/gt/intel_engine.h:17:
   In file included from drivers/gpu/drm/i915/gt/intel_gt_types.h:18:
   In file included from drivers/gpu/drm/i915/gt/uc/intel_uc.h:9:
   In file included from drivers/gpu/drm/i915/gt/uc/intel_guc.h:17:
   In file included from drivers/gpu/drm/i915/i915_vma.h:34:
>> drivers/gpu/drm/i915/gem/i915_gem_object.h:39:6: error: shift count >= width of type [-Werror,-Wshift-count-overflow]
           if (overflows_type(size, obj->base.size))
               ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   drivers/gpu/drm/i915/i915_utils.h:125:32: note: expanded from macro 'overflows_type'
           (sizeof(x) > sizeof(T) && (x) >> BITS_PER_TYPE(T))
                                         ^  ~~~~~~~~~~~~~~~~
   3 errors generated.
--
   In file included from drivers/gpu/drm/i915/i915_query.c:9:
   In file included from drivers/gpu/drm/i915/i915_drv.h:49:
   In file included from include/linux/shmem_fs.h:7:
   In file included from include/linux/mempolicy.h:11:
   include/linux/dax.h:153:39: error: unknown type name 'truct'; did you mean 'struct'?
   static inline bool bdev_dax_supported(truct dax_device *dax_dev,
                                         ^~~~~
                                         struct
   In file included from drivers/gpu/drm/i915/i915_query.c:9:
   In file included from drivers/gpu/drm/i915/i915_drv.h:84:
   In file included from drivers/gpu/drm/i915/gt/intel_engine.h:17:
   In file included from drivers/gpu/drm/i915/gt/intel_gt_types.h:18:
   In file included from drivers/gpu/drm/i915/gt/uc/intel_uc.h:9:
   In file included from drivers/gpu/drm/i915/gt/uc/intel_guc.h:17:
   In file included from drivers/gpu/drm/i915/i915_vma.h:34:
>> drivers/gpu/drm/i915/gem/i915_gem_object.h:39:6: error: shift count >= width of type [-Werror,-Wshift-count-overflow]
           if (overflows_type(size, obj->base.size))
               ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   drivers/gpu/drm/i915/i915_utils.h:125:32: note: expanded from macro 'overflows_type'
           (sizeof(x) > sizeof(T) && (x) >> BITS_PER_TYPE(T))
                                         ^  ~~~~~~~~~~~~~~~~
>> drivers/gpu/drm/i915/i915_query.c:513:7: error: shift count >= width of type [-Werror,-Wshift-count-overflow]
                   if (overflows_type(item.query_id - 1, unsigned long))
                       ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   drivers/gpu/drm/i915/i915_utils.h:125:32: note: expanded from macro 'overflows_type'
           (sizeof(x) > sizeof(T) && (x) >> BITS_PER_TYPE(T))
                                         ^  ~~~~~~~~~~~~~~~~
   3 errors generated.
--
   In file included from drivers/gpu/drm/i915/display/intel_fb.c:9:
   In file included from drivers/gpu/drm/i915/display/intel_display_types.h:47:
   In file included from drivers/gpu/drm/i915/i915_drv.h:49:
   In file included from include/linux/shmem_fs.h:7:
   In file included from include/linux/mempolicy.h:11:
   include/linux/dax.h:153:39: error: unknown type name 'truct'; did you mean 'struct'?
   static inline bool bdev_dax_supported(truct dax_device *dax_dev,
                                         ^~~~~
                                         struct
   In file included from drivers/gpu/drm/i915/display/intel_fb.c:9:
   In file included from drivers/gpu/drm/i915/display/intel_display_types.h:47:
   In file included from drivers/gpu/drm/i915/i915_drv.h:84:
   In file included from drivers/gpu/drm/i915/gt/intel_engine.h:17:
   In file included from drivers/gpu/drm/i915/gt/intel_gt_types.h:18:
   In file included from drivers/gpu/drm/i915/gt/uc/intel_uc.h:9:
   In file included from drivers/gpu/drm/i915/gt/uc/intel_guc.h:17:
   In file included from drivers/gpu/drm/i915/i915_vma.h:34:
>> drivers/gpu/drm/i915/gem/i915_gem_object.h:39:6: error: shift count >= width of type [-Werror,-Wshift-count-overflow]
           if (overflows_type(size, obj->base.size))
               ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   drivers/gpu/drm/i915/i915_utils.h:125:32: note: expanded from macro 'overflows_type'
           (sizeof(x) > sizeof(T) && (x) >> BITS_PER_TYPE(T))
                                         ^  ~~~~~~~~~~~~~~~~
>> drivers/gpu/drm/i915/display/intel_fb.c:660:2: error: shift count >= width of type [-Werror,-Wshift-count-overflow]
           assign_chk_ovf(i915, remap_info->offset, obj_offset);
           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   drivers/gpu/drm/i915/display/intel_fb.c:642:28: note: expanded from macro 'assign_chk_ovf'
           drm_WARN_ON(&(i915)->drm, overflows_type(val, var)); \
           ~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
   drivers/gpu/drm/i915/i915_utils.h:125:32: note: expanded from macro 'overflows_type'
           (sizeof(x) > sizeof(T) && (x) >> BITS_PER_TYPE(T))
                                         ^
   include/drm/drm_print.h:563:19: note: expanded from macro 'drm_WARN_ON'
           drm_WARN((drm), (x), "%s",                                      \
           ~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   include/drm/drm_print.h:553:7: note: expanded from macro 'drm_WARN'
           WARN(condition, "%s %s: " format,                               \
           ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   include/asm-generic/bug.h:130:25: note: expanded from macro 'WARN'
           int __ret_warn_on = !!(condition);                              \
                                  ^~~~~~~~~
   3 errors generated.


vim +39 drivers/gpu/drm/i915/gem/i915_gem_object.h

f0e4a06397526d Chris Wilson 2019-05-28  18  
ae2fb480f32f65 Matthew Auld 2021-01-22  19  /*
ae2fb480f32f65 Matthew Auld 2021-01-22  20   * XXX: There is a prevalence of the assumption that we fit the
ae2fb480f32f65 Matthew Auld 2021-01-22  21   * object's page count inside a 32bit _signed_ variable. Let's document
ae2fb480f32f65 Matthew Auld 2021-01-22  22   * this and catch if we ever need to fix it. In the meantime, if you do
ae2fb480f32f65 Matthew Auld 2021-01-22  23   * spot such a local variable, please consider fixing!
ae2fb480f32f65 Matthew Auld 2021-01-22  24   *
ae2fb480f32f65 Matthew Auld 2021-01-22  25   * Aside from our own locals (for which we have no excuse!):
ae2fb480f32f65 Matthew Auld 2021-01-22  26   * - sg_table embeds unsigned int for num_pages
ae2fb480f32f65 Matthew Auld 2021-01-22  27   * - get_user_pages*() mixed ints with longs
ae2fb480f32f65 Matthew Auld 2021-01-22  28   */
ae2fb480f32f65 Matthew Auld 2021-01-22  29  #define GEM_CHECK_SIZE_OVERFLOW(sz) \
ae2fb480f32f65 Matthew Auld 2021-01-22  30  	GEM_WARN_ON((sz) >> PAGE_SHIFT > INT_MAX)
ae2fb480f32f65 Matthew Auld 2021-01-22  31  
ae2fb480f32f65 Matthew Auld 2021-01-22  32  static inline bool i915_gem_object_size_2big(u64 size)
ae2fb480f32f65 Matthew Auld 2021-01-22  33  {
ae2fb480f32f65 Matthew Auld 2021-01-22  34  	struct drm_i915_gem_object *obj;
ae2fb480f32f65 Matthew Auld 2021-01-22  35  
ae2fb480f32f65 Matthew Auld 2021-01-22  36  	if (GEM_CHECK_SIZE_OVERFLOW(size))
ae2fb480f32f65 Matthew Auld 2021-01-22  37  		return true;
ae2fb480f32f65 Matthew Auld 2021-01-22  38  
ae2fb480f32f65 Matthew Auld 2021-01-22 @39  	if (overflows_type(size, obj->base.size))
ae2fb480f32f65 Matthew Auld 2021-01-22  40  		return true;
ae2fb480f32f65 Matthew Auld 2021-01-22  41  
ae2fb480f32f65 Matthew Auld 2021-01-22  42  	return false;
ae2fb480f32f65 Matthew Auld 2021-01-22  43  }
ae2fb480f32f65 Matthew Auld 2021-01-22  44  

:::::: The code at line 39 was first introduced by commit
:::::: ae2fb480f32f657d896d78b6214c2efebfa61993 drm/i915/gem: consolidate 2big error checking for object sizes

:::::: TO: Matthew Auld <matthew.auld@intel.com>
:::::: CC: Daniel Vetter <daniel.vetter@ffwll.ch>

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org

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                 reply	other threads:[~2021-07-30 11:27 UTC|newest]

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