== Series Details == Series: Fixes integer overflow or integer truncation issues in page lookups, ttm place configuration and scatterlist creation (rev9) URL : https://patchwork.freedesktop.org/series/104704/ State : warning == Summary == Error: dim checkpatch failed 44e2cc835627 drm: Move and add a few utility macros into drm util header -:87: CHECK:MACRO_ARG_REUSE: Macro argument reuse 'x' - possible side-effects? #87: FILE: include/drm/drm_util.h:92: +#define overflows_type(x, T) \ + (is_type_unsigned(x) ? \ + is_type_unsigned(T) ? \ + (sizeof(x) > sizeof(T) && (x) >> BITS_PER_TYPE(T)) ? 1 : 0 \ + : (sizeof(x) >= sizeof(T) && (x) >> (BITS_PER_TYPE(T) - 1)) ? 1 : 0 \ + : is_type_unsigned(T) ? \ + ((x) < 0) ? 1 : (sizeof(x) > sizeof(T) && (x) >> BITS_PER_TYPE(T)) ? 1 : 0 \ + : (sizeof(x) > sizeof(T)) ? \ + ((x) < 0) ? (((x) * -1) >> BITS_PER_TYPE(T)) ? 1 : 0 \ + : ((x) >> BITS_PER_TYPE(T)) ? 1 : 0 \ + : 0) -:87: CHECK:MACRO_ARG_REUSE: Macro argument reuse 'T' - possible side-effects? #87: FILE: include/drm/drm_util.h:92: +#define overflows_type(x, T) \ + (is_type_unsigned(x) ? \ + is_type_unsigned(T) ? \ + (sizeof(x) > sizeof(T) && (x) >> BITS_PER_TYPE(T)) ? 1 : 0 \ + : (sizeof(x) >= sizeof(T) && (x) >> (BITS_PER_TYPE(T) - 1)) ? 1 : 0 \ + : is_type_unsigned(T) ? \ + ((x) < 0) ? 1 : (sizeof(x) > sizeof(T) && (x) >> BITS_PER_TYPE(T)) ? 1 : 0 \ + : (sizeof(x) > sizeof(T)) ? \ + ((x) < 0) ? (((x) * -1) >> BITS_PER_TYPE(T)) ? 1 : 0 \ + : ((x) >> BITS_PER_TYPE(T)) ? 1 : 0 \ + : 0) total: 0 errors, 0 warnings, 2 checks, 100 lines checked e219ba46ca5e drm/i915/gem: Typecheck page lookups -:138: CHECK:MACRO_ARG_REUSE: Macro argument reuse 'n' - possible side-effects? #138: FILE: drivers/gpu/drm/i915/gem/i915_gem_object.h:413: +#define i915_gem_object_page_iter_get_sg(obj, it, n, offset) ({ \ + exactly_pgoff_t(n); \ + __i915_gem_object_page_iter_get_sg(obj, it, n, offset); \ +}) -:187: CHECK:MACRO_ARG_REUSE: Macro argument reuse 'n' - possible side-effects? #187: FILE: drivers/gpu/drm/i915/gem/i915_gem_object.h:458: +#define i915_gem_object_get_sg(obj, n, offset) ({ \ + exactly_pgoff_t(n); \ + __i915_gem_object_get_sg(obj, n, offset); \ +}) -:215: CHECK:PARENTHESIS_ALIGNMENT: Alignment should match open parenthesis #215: FILE: drivers/gpu/drm/i915/gem/i915_gem_object.h:483: +__i915_gem_object_get_sg_dma(struct drm_i915_gem_object *obj, pgoff_t n, + unsigned int *offset) -:236: CHECK:MACRO_ARG_REUSE: Macro argument reuse 'n' - possible side-effects? #236: FILE: drivers/gpu/drm/i915/gem/i915_gem_object.h:503: +#define i915_gem_object_get_sg_dma(obj, n, offset) ({ \ + exactly_pgoff_t(n); \ + __i915_gem_object_get_sg_dma(obj, n, offset); \ +}) -:274: CHECK:MACRO_ARG_REUSE: Macro argument reuse 'n' - possible side-effects? #274: FILE: drivers/gpu/drm/i915/gem/i915_gem_object.h:539: +#define i915_gem_object_get_page(obj, n) ({ \ + exactly_pgoff_t(n); \ + __i915_gem_object_get_page(obj, n); \ +}) -:311: CHECK:MACRO_ARG_REUSE: Macro argument reuse 'n' - possible side-effects? #311: FILE: drivers/gpu/drm/i915/gem/i915_gem_object.h:574: +#define i915_gem_object_get_dirty_page(obj, n) ({ \ + exactly_pgoff_t(n); \ + __i915_gem_object_get_dirty_page(obj, n); \ +}) -:352: CHECK:MACRO_ARG_REUSE: Macro argument reuse 'n' - possible side-effects? #352: FILE: drivers/gpu/drm/i915/gem/i915_gem_object.h:612: +#define i915_gem_object_get_dma_address_len(obj, n, len) ({ \ + exactly_pgoff_t(n); \ + __i915_gem_object_get_dma_address_len(obj, n, len); \ +}) -:389: CHECK:MACRO_ARG_REUSE: Macro argument reuse 'n' - possible side-effects? #389: FILE: drivers/gpu/drm/i915/gem/i915_gem_object.h:647: +#define i915_gem_object_get_dma_address(obj, n) ({ \ + exactly_pgoff_t(n); \ + __i915_gem_object_get_dma_address(obj, n); \ +}) total: 0 errors, 0 warnings, 8 checks, 616 lines checked dda8e4426966 drm/i915: Check for integer truncation on scatterlist creation -:200: WARNING:NEW_TYPEDEFS: do not add new typedefs #200: FILE: drivers/gpu/drm/i915/i915_scatterlist.h:224: +typedef unsigned int __sg_size_t; /* see linux/scatterlist.h */ -:201: ERROR:COMPLEX_MACRO: Macros with complex values should be enclosed in parentheses #201: FILE: drivers/gpu/drm/i915/i915_scatterlist.h:225: +#define sg_alloc_table(sgt, nents, gfp) \ + overflows_type(nents, __sg_size_t) ? -E2BIG : (sg_alloc_table)(sgt, (__sg_size_t)(nents), gfp) -:201: CHECK:MACRO_ARG_REUSE: Macro argument reuse 'nents' - possible side-effects? #201: FILE: drivers/gpu/drm/i915/i915_scatterlist.h:225: +#define sg_alloc_table(sgt, nents, gfp) \ + overflows_type(nents, __sg_size_t) ? -E2BIG : (sg_alloc_table)(sgt, (__sg_size_t)(nents), gfp) -:202: WARNING:LONG_LINE: line length of 102 exceeds 100 columns #202: FILE: drivers/gpu/drm/i915/i915_scatterlist.h:226: + overflows_type(nents, __sg_size_t) ? -E2BIG : (sg_alloc_table)(sgt, (__sg_size_t)(nents), gfp) -:204: ERROR:COMPLEX_MACRO: Macros with complex values should be enclosed in parentheses #204: FILE: drivers/gpu/drm/i915/i915_scatterlist.h:228: +#define sg_alloc_table_from_pages_segment(sgt, pages, npages, offset, size, max_segment, gfp) \ + overflows_type(npages, __sg_size_t) ? -E2BIG : (sg_alloc_table_from_pages_segment)(sgt, pages, (__sg_size_t)(npages), offset, size, max_segment, gfp) -:204: CHECK:MACRO_ARG_REUSE: Macro argument reuse 'npages' - possible side-effects? #204: FILE: drivers/gpu/drm/i915/i915_scatterlist.h:228: +#define sg_alloc_table_from_pages_segment(sgt, pages, npages, offset, size, max_segment, gfp) \ + overflows_type(npages, __sg_size_t) ? -E2BIG : (sg_alloc_table_from_pages_segment)(sgt, pages, (__sg_size_t)(npages), offset, size, max_segment, gfp) -:205: WARNING:LONG_LINE: line length of 157 exceeds 100 columns #205: FILE: drivers/gpu/drm/i915/i915_scatterlist.h:229: + overflows_type(npages, __sg_size_t) ? -E2BIG : (sg_alloc_table_from_pages_segment)(sgt, pages, (__sg_size_t)(npages), offset, size, max_segment, gfp) total: 2 errors, 3 warnings, 2 checks, 123 lines checked f4fa7960d214 drm/i915: Check for integer truncation on the configuration of ttm place -:63: CHECK:MACRO_ARG_REUSE: Macro argument reuse 'ptr' - possible side-effects? #63: FILE: drivers/gpu/drm/i915/i915_gem.h:86: +#define safe_conversion_gem_bug_on(ptr, value) !({ \ + safe_conversion(ptr, value) ? 0 \ + : (({ GEM_BUG_ON(overflows_type(value, *ptr)); }), 1); \ +}) -:63: CHECK:MACRO_ARG_REUSE: Macro argument reuse 'value' - possible side-effects? #63: FILE: drivers/gpu/drm/i915/i915_gem.h:86: +#define safe_conversion_gem_bug_on(ptr, value) !({ \ + safe_conversion(ptr, value) ? 0 \ + : (({ GEM_BUG_ON(overflows_type(value, *ptr)); }), 1); \ +}) total: 0 errors, 0 warnings, 2 checks, 63 lines checked 27ebc00e000e drm/i915: Check if the size is too big while creating shmem file ceed0c581a2a drm/i915: Use error code as -E2BIG when the size of gem ttm object is too large -:11: WARNING:COMMIT_LOG_LONG_LINE: Possible unwrapped commit description (prefer a maximum 75 chars per line) #11: to add vma. The direct function that returns -ENOSPC is drm_mm_insert_node_in_range(). total: 0 errors, 1 warnings, 0 checks, 17 lines checked 5068d1b558b3 drm/i915: Remove truncation warning for large objects
