Hi Jani, kernel test robot noticed the following build warnings: [auto build test WARNING on drm-tip/drm-tip] url: https://github.com/intel-lab-lkp/linux/commits/Jani-Nikula/drm-i915-drop-Wall-and-related-disables-from-cflags-as-redundant/20231006-203658 base: git://anongit.freedesktop.org/drm/drm-tip drm-tip patch link: https://lore.kernel.org/r/f50c8ea0e63615aea28fe7f6049703e1d28ba7eb.1696595500.git.jani.nikula%40intel.com patch subject: [PATCH 2/2] drm/i915: enable W=1 warnings by default config: x86_64-rhel-8.3-rust (https://download.01.org/0day-ci/archive/20231007/202310070011.Fji48IBk-lkp@xxxxxxxxx/config) compiler: clang version 16.0.4 (https://github.com/llvm/llvm-project.git ae42196bc493ffe877a7e3dff8be32035dea4d07) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231007/202310070011.Fji48IBk-lkp@xxxxxxxxx/reproduce) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp@xxxxxxxxx> | Closes: https://lore.kernel.org/oe-kbuild-all/202310070011.Fji48IBk-lkp@xxxxxxxxx/ All warnings (new ones prefixed by >>): In file included from drivers/gpu/drm/i915/i915_driver.c:30: In file included from include/linux/acpi.h:13: In file included from include/linux/resource_ext.h:11: In file included from include/linux/slab.h:16: In file included from include/linux/gfp.h:7: In file included from include/linux/mmzone.h:8: In file included from include/linux/spinlock.h:56: In file included from include/linux/preempt.h:79: In file included from arch/x86/include/asm/preempt.h:9: >> include/linux/thread_info.h:240:29: warning: comparison of integers of different signs: 'int' and 'size_t' (aka 'unsigned long') [-Wsign-compare] if (unlikely(sz >= 0 && sz < bytes)) { ~~ ^ ~~~~~ include/linux/compiler.h:77:42: note: expanded from macro 'unlikely' # define unlikely(x) __builtin_expect(!!(x), 0) ^ In file included from drivers/gpu/drm/i915/i915_driver.c:30: In file included from include/linux/acpi.h:13: In file included from include/linux/resource_ext.h:11: In file included from include/linux/slab.h:16: In file included from include/linux/gfp.h:7: In file included from include/linux/mmzone.h:22: >> include/linux/mm_types.h:1036:13: warning: comparison of integers of different signs: 'int' and 'unsigned int' [-Wsign-compare] return cid == MM_CID_UNSET; ~~~ ^ ~~~~~~~~~~~~ include/linux/mm_types.h:1074:2: warning: comparison of integers of different signs: 'int' and 'unsigned int' [-Wsign-compare] for_each_possible_cpu(i) { ^~~~~~~~~~~~~~~~~~~~~~~~ include/linux/cpumask.h:974:36: note: expanded from macro 'for_each_possible_cpu' #define for_each_possible_cpu(cpu) for_each_cpu((cpu), cpu_possible_mask) ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/cpumask.h:282:2: note: expanded from macro 'for_each_cpu' for_each_set_bit(cpu, cpumask_bits(mask), small_cpumask_bits) ^ ~~~ ~~~~~~~~~~~~~~~~~~ include/linux/find.h:559:70: note: expanded from macro 'for_each_set_bit' for ((bit) = 0; (bit) = find_next_bit((addr), (size), (bit)), (bit) < (size); (bit)++) ~~~ ^ ~~~~ In file included from drivers/gpu/drm/i915/i915_driver.c:30: In file included from include/linux/acpi.h:13: In file included from include/linux/resource_ext.h:11: In file included from include/linux/slab.h:16: In file included from include/linux/gfp.h:7: >> include/linux/mmzone.h:1627:44: warning: comparison of integers of different signs: 'int' and 'enum zone_type' [-Wsign-compare] if (likely(!nodes && zonelist_zone_idx(z) <= highest_zoneidx)) ~~~~~~~~~~~~~~~~~~~~ ^ ~~~~~~~~~~~~~~~ include/linux/compiler.h:76:40: note: expanded from macro 'likely' # define likely(x) __builtin_expect(!!(x), 1) ^ In file included from drivers/gpu/drm/i915/i915_driver.c:30: In file included from include/linux/acpi.h:13: In file included from include/linux/resource_ext.h:11: In file included from include/linux/slab.h:20: >> include/linux/percpu-refcount.h:205:3: warning: comparison of integers of different signs: 'unsigned long' and 'int' [-Wsign-compare] this_cpu_add(*percpu_count, nr); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/percpu-defs.h:491:33: note: expanded from macro 'this_cpu_add' #define this_cpu_add(pcp, val) __pcpu_size_call(this_cpu_add_, pcp, val) ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/percpu-defs.h:368:11: note: expanded from macro '__pcpu_size_call' case 8: stem##8(variable, __VA_ARGS__);break; \ ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ <scratch space>:49:1: note: expanded from here this_cpu_add_8 ^ arch/x86/include/asm/percpu.h:370:35: note: expanded from macro 'this_cpu_add_8' #define this_cpu_add_8(pcp, val) percpu_add_op(8, volatile, (pcp), val) ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ arch/x86/include/asm/percpu.h:127:31: note: expanded from macro 'percpu_add_op' ((val) == 1 || (val) == -1)) ? \ ~~~ ^ ~~ In file included from drivers/gpu/drm/i915/i915_driver.c:30: In file included from include/linux/acpi.h:13: In file included from include/linux/resource_ext.h:11: In file included from include/linux/slab.h:20: include/linux/percpu-refcount.h:244:3: warning: comparison of integers of different signs: 'unsigned long' and 'int' [-Wsign-compare] this_cpu_add(*percpu_count, nr); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/percpu-defs.h:491:33: note: expanded from macro 'this_cpu_add' #define this_cpu_add(pcp, val) __pcpu_size_call(this_cpu_add_, pcp, val) ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/percpu-defs.h:368:11: note: expanded from macro '__pcpu_size_call' case 8: stem##8(variable, __VA_ARGS__);break; \ ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ <scratch space>:101:1: note: expanded from here this_cpu_add_8 ^ arch/x86/include/asm/percpu.h:370:35: note: expanded from macro 'this_cpu_add_8' #define this_cpu_add_8(pcp, val) percpu_add_op(8, volatile, (pcp), val) ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ arch/x86/include/asm/percpu.h:127:31: note: expanded from macro 'percpu_add_op' ((val) == 1 || (val) == -1)) ? \ ~~~ ^ ~~ In file included from drivers/gpu/drm/i915/i915_driver.c:30: In file included from include/linux/acpi.h:13: In file included from include/linux/resource_ext.h:11: In file included from include/linux/slab.h:20: include/linux/percpu-refcount.h:333:3: warning: comparison of integers of different signs: 'unsigned long' and 'int' [-Wsign-compare] this_cpu_sub(*percpu_count, nr); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/percpu-defs.h:500:33: note: expanded from macro 'this_cpu_sub' #define this_cpu_sub(pcp, val) this_cpu_add(pcp, -(typeof(pcp))(val)) ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/percpu-defs.h:491:33: note: expanded from macro 'this_cpu_add' #define this_cpu_add(pcp, val) __pcpu_size_call(this_cpu_add_, pcp, val) ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/percpu-defs.h:368:11: note: expanded from macro '__pcpu_size_call' case 8: stem##8(variable, __VA_ARGS__);break; \ ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ <scratch space>:209:1: note: expanded from here this_cpu_add_8 ^ arch/x86/include/asm/percpu.h:370:35: note: expanded from macro 'this_cpu_add_8' #define this_cpu_add_8(pcp, val) percpu_add_op(8, volatile, (pcp), val) ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ arch/x86/include/asm/percpu.h:127:31: note: expanded from macro 'percpu_add_op' ((val) == 1 || (val) == -1)) ? \ ~~~ ^ ~~ In file included from drivers/gpu/drm/i915/i915_driver.c:33: In file included from include/linux/oom.h:11: In file included from include/linux/mm.h:2168: >> include/linux/vmstat.h:231:2: warning: comparison of integers of different signs: 'int' and 'unsigned int' [-Wsign-compare] for_each_online_cpu(cpu) ^~~~~~~~~~~~~~~~~~~~~~~~ include/linux/cpumask.h:975:36: note: expanded from macro 'for_each_online_cpu' #define for_each_online_cpu(cpu) for_each_cpu((cpu), cpu_online_mask) ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/cpumask.h:282:2: note: expanded from macro 'for_each_cpu' for_each_set_bit(cpu, cpumask_bits(mask), small_cpumask_bits) ^ ~~~ ~~~~~~~~~~~~~~~~~~ include/linux/find.h:559:70: note: expanded from macro 'for_each_set_bit' for ((bit) = 0; (bit) = find_next_bit((addr), (size), (bit)), (bit) < (size); (bit)++) ~~~ ^ ~~~~ In file included from drivers/gpu/drm/i915/i915_driver.c:39: In file included from include/linux/vga_switcheroo.h:34: In file included from include/linux/fb.h:7: In file included from include/uapi/linux/fb.h:6: In file included from include/linux/i2c.h:19: In file included from include/linux/regulator/consumer.h:35: In file included from include/linux/suspend.h:5: In file included from include/linux/swap.h:9: In file included from include/linux/memcontrol.h:22: In file included from include/linux/writeback.h:203: >> include/linux/bio.h:401:14: warning: comparison of integers of different signs: 'int' and 'unsigned int' [-Wsign-compare] if (sectors >= bio_sectors(bio)) ~~~~~~~ ^ ~~~~~~~~~~~~~~~~ In file included from drivers/gpu/drm/i915/i915_driver.c:39: In file included from include/linux/vga_switcheroo.h:34: In file included from include/linux/fb.h:7: In file included from include/uapi/linux/fb.h:6: In file included from include/linux/i2c.h:19: In file included from include/linux/regulator/consumer.h:35: In file included from include/linux/suspend.h:5: In file included from include/linux/swap.h:13: >> include/linux/pagemap.h:813:36: warning: comparison of integers of different signs: 'unsigned long' and 'long' [-Wsign-compare] return index - folio_index(folio) < folio_nr_pages(folio); ~~~~~~~~~~~~~~~~~~~~~~~~~~ ^ ~~~~~~~~~~~~~~~~~~~~~ In file included from drivers/gpu/drm/i915/i915_driver.c:52: In file included from drivers/gpu/drm/i915/display/intel_display_types.h:31: >> include/linux/pwm.h:335:50: warning: comparison of integers of different signs: 'u64' (aka 'unsigned long long') and 'int' [-Wsign-compare] if (state.duty_cycle == duty_ns && state.period == period_ns) ~~~~~~~~~~~~ ^ ~~~~~~~~~ include/linux/pwm.h:335:23: warning: comparison of integers of different signs: 'u64' (aka 'unsigned long long') and 'int' [-Wsign-compare] if (state.duty_cycle == duty_ns && state.period == period_ns) ~~~~~~~~~~~~~~~~ ^ ~~~~~~~ In file included from drivers/gpu/drm/i915/i915_driver.c:52: In file included from drivers/gpu/drm/i915/display/intel_display_types.h:49: In file included from drivers/gpu/drm/i915/i915_vma.h:34: In file included from drivers/gpu/drm/i915/gem/i915_gem_object.h:15: In file included from drivers/gpu/drm/i915/gem/i915_gem_object_types.h:13: In file included from include/drm/ttm/ttm_bo.h:39: In file included from include/drm/ttm/ttm_device.h:30: >> include/drm/ttm/ttm_resource.h:312:16: warning: comparison of integers of different signs: 'int' and 'unsigned int' [-Wsign-compare] for (i = 0; i < TTM_MAX_BO_PRIORITY; i++) ~ ^ ~~~~~~~~~~~~~~~~~~~ In file included from drivers/gpu/drm/i915/i915_driver.c:52: In file included from drivers/gpu/drm/i915/display/intel_display_types.h:49: In file included from drivers/gpu/drm/i915/i915_vma.h:34: In file included from drivers/gpu/drm/i915/gem/i915_gem_object.h:16: In file included from drivers/gpu/drm/i915/i915_gem_gtt.h:14: >> drivers/gpu/drm/i915/gt/intel_gtt.h:435:16: warning: comparison of integers of different signs: 'int' and 'unsigned long' [-Wsign-compare] if ((int)type >= ARRAY_SIZE(vm->min_alignment)) ~~~~~~~~~ ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 14 warnings generated. -- In file included from drivers/gpu/drm/i915/i915_drm_client.c:7: In file included from include/linux/slab.h:16: In file included from include/linux/gfp.h:7: In file included from include/linux/mmzone.h:8: In file included from include/linux/spinlock.h:56: In file included from include/linux/preempt.h:79: In file included from arch/x86/include/asm/preempt.h:9: >> include/linux/thread_info.h:240:29: warning: comparison of integers of different signs: 'int' and 'size_t' (aka 'unsigned long') [-Wsign-compare] if (unlikely(sz >= 0 && sz < bytes)) { ~~ ^ ~~~~~ include/linux/compiler.h:77:42: note: expanded from macro 'unlikely' # define unlikely(x) __builtin_expect(!!(x), 0) ^ In file included from drivers/gpu/drm/i915/i915_drm_client.c:7: In file included from include/linux/slab.h:16: In file included from include/linux/gfp.h:7: In file included from include/linux/mmzone.h:22: >> include/linux/mm_types.h:1036:13: warning: comparison of integers of different signs: 'int' and 'unsigned int' [-Wsign-compare] return cid == MM_CID_UNSET; ~~~ ^ ~~~~~~~~~~~~ include/linux/mm_types.h:1074:2: warning: comparison of integers of different signs: 'int' and 'unsigned int' [-Wsign-compare] for_each_possible_cpu(i) { ^~~~~~~~~~~~~~~~~~~~~~~~ include/linux/cpumask.h:974:36: note: expanded from macro 'for_each_possible_cpu' #define for_each_possible_cpu(cpu) for_each_cpu((cpu), cpu_possible_mask) ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/cpumask.h:282:2: note: expanded from macro 'for_each_cpu' for_each_set_bit(cpu, cpumask_bits(mask), small_cpumask_bits) ^ ~~~ ~~~~~~~~~~~~~~~~~~ include/linux/find.h:559:70: note: expanded from macro 'for_each_set_bit' for ((bit) = 0; (bit) = find_next_bit((addr), (size), (bit)), (bit) < (size); (bit)++) ~~~ ^ ~~~~ In file included from drivers/gpu/drm/i915/i915_drm_client.c:7: In file included from include/linux/slab.h:16: In file included from include/linux/gfp.h:7: >> include/linux/mmzone.h:1627:44: warning: comparison of integers of different signs: 'int' and 'enum zone_type' [-Wsign-compare] if (likely(!nodes && zonelist_zone_idx(z) <= highest_zoneidx)) ~~~~~~~~~~~~~~~~~~~~ ^ ~~~~~~~~~~~~~~~ include/linux/compiler.h:76:40: note: expanded from macro 'likely' # define likely(x) __builtin_expect(!!(x), 1) ^ In file included from drivers/gpu/drm/i915/i915_drm_client.c:7: In file included from include/linux/slab.h:20: >> include/linux/percpu-refcount.h:205:3: warning: comparison of integers of different signs: 'unsigned long' and 'int' [-Wsign-compare] this_cpu_add(*percpu_count, nr); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/percpu-defs.h:491:33: note: expanded from macro 'this_cpu_add' #define this_cpu_add(pcp, val) __pcpu_size_call(this_cpu_add_, pcp, val) ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/percpu-defs.h:368:11: note: expanded from macro '__pcpu_size_call' case 8: stem##8(variable, __VA_ARGS__);break; \ ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ <scratch space>:28:1: note: expanded from here this_cpu_add_8 ^ arch/x86/include/asm/percpu.h:370:35: note: expanded from macro 'this_cpu_add_8' #define this_cpu_add_8(pcp, val) percpu_add_op(8, volatile, (pcp), val) ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ arch/x86/include/asm/percpu.h:127:31: note: expanded from macro 'percpu_add_op' ((val) == 1 || (val) == -1)) ? \ ~~~ ^ ~~ In file included from drivers/gpu/drm/i915/i915_drm_client.c:7: In file included from include/linux/slab.h:20: include/linux/percpu-refcount.h:244:3: warning: comparison of integers of different signs: 'unsigned long' and 'int' [-Wsign-compare] this_cpu_add(*percpu_count, nr); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/percpu-defs.h:491:33: note: expanded from macro 'this_cpu_add' #define this_cpu_add(pcp, val) __pcpu_size_call(this_cpu_add_, pcp, val) ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/percpu-defs.h:368:11: note: expanded from macro '__pcpu_size_call' case 8: stem##8(variable, __VA_ARGS__);break; \ ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ <scratch space>:80:1: note: expanded from here this_cpu_add_8 ^ arch/x86/include/asm/percpu.h:370:35: note: expanded from macro 'this_cpu_add_8' #define this_cpu_add_8(pcp, val) percpu_add_op(8, volatile, (pcp), val) ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ arch/x86/include/asm/percpu.h:127:31: note: expanded from macro 'percpu_add_op' ((val) == 1 || (val) == -1)) ? \ ~~~ ^ ~~ In file included from drivers/gpu/drm/i915/i915_drm_client.c:7: In file included from include/linux/slab.h:20: include/linux/percpu-refcount.h:333:3: warning: comparison of integers of different signs: 'unsigned long' and 'int' [-Wsign-compare] this_cpu_sub(*percpu_count, nr); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/percpu-defs.h:500:33: note: expanded from macro 'this_cpu_sub' #define this_cpu_sub(pcp, val) this_cpu_add(pcp, -(typeof(pcp))(val)) ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/percpu-defs.h:491:33: note: expanded from macro 'this_cpu_add' #define this_cpu_add(pcp, val) __pcpu_size_call(this_cpu_add_, pcp, val) ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/percpu-defs.h:368:11: note: expanded from macro '__pcpu_size_call' case 8: stem##8(variable, __VA_ARGS__);break; \ ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ <scratch space>:188:1: note: expanded from here this_cpu_add_8 ^ arch/x86/include/asm/percpu.h:370:35: note: expanded from macro 'this_cpu_add_8' #define this_cpu_add_8(pcp, val) percpu_add_op(8, volatile, (pcp), val) ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ arch/x86/include/asm/percpu.h:127:31: note: expanded from macro 'percpu_add_op' ((val) == 1 || (val) == -1)) ? \ ~~~ ^ ~~ In file included from drivers/gpu/drm/i915/i915_drm_client.c:14: In file included from drivers/gpu/drm/i915/gem/i915_gem_context.h:10: In file included from drivers/gpu/drm/i915/gem/i915_gem_context_types.h:20: In file included from drivers/gpu/drm/i915/gt/intel_context_types.h:18: In file included from drivers/gpu/drm/i915/gt/intel_engine_types.h:21: In file included from drivers/gpu/drm/i915/i915_pmu.h:11: In file included from include/linux/perf_event.h:18: In file included from include/uapi/linux/bpf_perf_event.h:11: In file included from ./arch/x86/include/generated/uapi/asm/bpf_perf_event.h:1: In file included from include/uapi/asm-generic/bpf_perf_event.h:4: In file included from include/linux/ptrace.h:10: In file included from include/linux/pid_namespace.h:7: In file included from include/linux/mm.h:2168: >> include/linux/vmstat.h:231:2: warning: comparison of integers of different signs: 'int' and 'unsigned int' [-Wsign-compare] for_each_online_cpu(cpu) ^~~~~~~~~~~~~~~~~~~~~~~~ include/linux/cpumask.h:975:36: note: expanded from macro 'for_each_online_cpu' #define for_each_online_cpu(cpu) for_each_cpu((cpu), cpu_online_mask) ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/cpumask.h:282:2: note: expanded from macro 'for_each_cpu' for_each_set_bit(cpu, cpumask_bits(mask), small_cpumask_bits) ^ ~~~ ~~~~~~~~~~~~~~~~~~ include/linux/find.h:559:70: note: expanded from macro 'for_each_set_bit' for ((bit) = 0; (bit) = find_next_bit((addr), (size), (bit)), (bit) < (size); (bit)++) ~~~ ^ ~~~~ In file included from drivers/gpu/drm/i915/i915_drm_client.c:14: 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:37: In file included from include/drm/ttm/ttm_device.h:30: >> include/drm/ttm/ttm_resource.h:312:16: warning: comparison of integers of different signs: 'int' and 'unsigned int' [-Wsign-compare] for (i = 0; i < TTM_MAX_BO_PRIORITY; i++) ~ ^ ~~~~~~~~~~~~~~~~~~~ In file included from drivers/gpu/drm/i915/i915_drm_client.c:14: 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:46: In file included from drivers/gpu/drm/i915/gt/intel_engine.h:18: In file included from drivers/gpu/drm/i915/gt/intel_gt_types.h:19: 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_gsc_uc.h:9: In file included from drivers/gpu/drm/i915/gt/uc/intel_uc_fw.h:14: In file included from drivers/gpu/drm/i915/i915_vma.h:34: In file included from drivers/gpu/drm/i915/gem/i915_gem_object.h:16: In file included from drivers/gpu/drm/i915/i915_gem_gtt.h:14: >> drivers/gpu/drm/i915/gt/intel_gtt.h:435:16: warning: comparison of integers of different signs: 'int' and 'unsigned long' [-Wsign-compare] if ((int)type >= ARRAY_SIZE(vm->min_alignment)) ~~~~~~~~~ ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 10 warnings generated. .. vim +240 include/linux/thread_info.h b0377fedb65280 Al Viro 2017-06-29 235 9dd819a15162f8 Kees Cook 2019-09-25 236 static __always_inline __must_check bool b0377fedb65280 Al Viro 2017-06-29 237 check_copy_size(const void *addr, size_t bytes, bool is_source) b0377fedb65280 Al Viro 2017-06-29 238 { c80d92fbb67b2c Kees Cook 2021-06-17 239 int sz = __builtin_object_size(addr, 0); b0377fedb65280 Al Viro 2017-06-29 @240 if (unlikely(sz >= 0 && sz < bytes)) { b0377fedb65280 Al Viro 2017-06-29 241 if (!__builtin_constant_p(bytes)) b0377fedb65280 Al Viro 2017-06-29 242 copy_overflow(sz, bytes); b0377fedb65280 Al Viro 2017-06-29 243 else if (is_source) b0377fedb65280 Al Viro 2017-06-29 244 __bad_copy_from(); b0377fedb65280 Al Viro 2017-06-29 245 else b0377fedb65280 Al Viro 2017-06-29 246 __bad_copy_to(); b0377fedb65280 Al Viro 2017-06-29 247 return false; b0377fedb65280 Al Viro 2017-06-29 248 } 6d13de1489b6bf Kees Cook 2019-12-04 249 if (WARN_ON_ONCE(bytes > INT_MAX)) 6d13de1489b6bf Kees Cook 2019-12-04 250 return false; b0377fedb65280 Al Viro 2017-06-29 251 check_object_size(addr, bytes, is_source); b0377fedb65280 Al Viro 2017-06-29 252 return true; b0377fedb65280 Al Viro 2017-06-29 253 } b0377fedb65280 Al Viro 2017-06-29 254 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
