Re: [PATCH v2] rust: io: move offset_valid and io_addr(_assert) to IoRaw

[kernel test robot <lkp@intel.com>]

Hi Fiona,

kernel test robot noticed the following build errors:

[auto build test ERROR on 01b3cb620815fc3feb90ee117d9445a5b608a9f7]

url:    https://github.com/intel-lab-lkp/linux/commits/Fiona-Behrens/rust-io-move-offset_valid-and-io_addr-_assert-to-IoRaw/20250128-204724
base:   01b3cb620815fc3feb90ee117d9445a5b608a9f7
patch link:    https://lore.kernel.org/r/20250128-rust-io-offset-v2-1-222de7c96a34%40kloenk.dev
patch subject: [PATCH v2] rust: io: move offset_valid and io_addr(_assert) to IoRaw
config: x86_64-rhel-9.4-rust (https://download.01.org/0day-ci/archive/20250130/202501302233.VecDQamx-lkp@intel.com/config)
compiler: clang version 19.1.3 (https://github.com/llvm/llvm-project ab51eccf88f5321e7c60591c5546b254b6afab99)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250130/202501302233.VecDQamx-lkp@intel.com/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@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202501302233.VecDQamx-lkp@intel.com/

All errors (new ones prefixed by >>):

   In file included from arch/x86/kernel/asm-offsets.c:14:
   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:21:
   In file included from include/linux/mm.h:2224:
   include/linux/vmstat.h:504:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion]
   504 |         return vmstat_text[NR_VM_ZONE_STAT_ITEMS +
   |                            ~~~~~~~~~~~~~~~~~~~~~ ^
   505 |                            item];
   |                            ~~~~
   include/linux/vmstat.h:511:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion]
   511 |         return vmstat_text[NR_VM_ZONE_STAT_ITEMS +
   |                            ~~~~~~~~~~~~~~~~~~~~~ ^
   512 |                            NR_VM_NUMA_EVENT_ITEMS +
   |                            ~~~~~~~~~~~~~~~~~~~~~~
   include/linux/vmstat.h:524:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion]
   524 |         return vmstat_text[NR_VM_ZONE_STAT_ITEMS +
   |                            ~~~~~~~~~~~~~~~~~~~~~ ^
   525 |                            NR_VM_NUMA_EVENT_ITEMS +
   |                            ~~~~~~~~~~~~~~~~~~~~~~
   3 warnings generated.
   ***
   *** Rust bindings generator 'bindgen' < 0.69.5 together with libclang >= 19.1
   *** may not work due to a bug (https://github.com/rust-lang/rust-bindgen/pull/2824),
   *** unless patched (like Debian's).
   ***   Your bindgen version:  0.65.1
   ***   Your libclang version: 19.1.3
   ***
   ***
   *** Please see Documentation/rust/quick-start.rst for details
   *** on how to set up the Rust support.
   ***
   In file included from rust/helpers/helpers.c:10:
   In file included from rust/helpers/blk.c:3:
   In file included from include/linux/blk-mq.h:5:
   In file included from include/linux/blkdev.h:9:
   In file included from include/linux/blk_types.h:10:
   In file included from include/linux/bvec.h:10:
   In file included from include/linux/highmem.h:8:
   In file included from include/linux/cacheflush.h:5:
   In file included from arch/x86/include/asm/cacheflush.h:5:
   In file included from include/linux/mm.h:2224:
   include/linux/vmstat.h:504:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion]
   504 |         return vmstat_text[NR_VM_ZONE_STAT_ITEMS +
   |                            ~~~~~~~~~~~~~~~~~~~~~ ^
   505 |                            item];
   |                            ~~~~
   include/linux/vmstat.h:511:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion]
   511 |         return vmstat_text[NR_VM_ZONE_STAT_ITEMS +
   |                            ~~~~~~~~~~~~~~~~~~~~~ ^
   512 |                            NR_VM_NUMA_EVENT_ITEMS +
   |                            ~~~~~~~~~~~~~~~~~~~~~~
   include/linux/vmstat.h:524:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion]
   524 |         return vmstat_text[NR_VM_ZONE_STAT_ITEMS +
   |                            ~~~~~~~~~~~~~~~~~~~~~ ^
   525 |                            NR_VM_NUMA_EVENT_ITEMS +
   |                            ~~~~~~~~~~~~~~~~~~~~~~
   3 warnings generated.
   clang diag: include/linux/vmstat.h:504:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion]
   clang diag: include/linux/vmstat.h:511:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion]
   clang diag: include/linux/vmstat.h:524:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion]
   clang diag: include/linux/vmstat.h:504:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion]
   clang diag: include/linux/vmstat.h:511:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion]
   clang diag: include/linux/vmstat.h:524:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion]
   clang diag: include/linux/vmstat.h:504:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion]
   clang diag: include/linux/vmstat.h:511:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion]
   clang diag: include/linux/vmstat.h:524:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion]
>> error[E0658]: use of unstable library feature 'unchecked_math': niche optimization path
   --> rust/kernel/io.rs:82:33
   |
   82 |         Ok(unsafe { self.addr().unchecked_add(offset) })
   |                                 ^^^^^^^^^^^^^
   |
   = note: see issue #85122 <https://github.com/rust-lang/rust/issues/85122> for more information
   = help: add `#![feature(unchecked_math)]` to the crate attributes to enable
   = note: this compiler was built on 2024-04-29; consider upgrading it if it is out of date
--
>> error[E0658]: use of unstable library feature 'unchecked_math': niche optimization path
   --> rust/kernel/io.rs:99:30
   |
   99 |         unsafe { self.addr().unchecked_add(offset) }
   |                              ^^^^^^^^^^^^^
   |
   = note: see issue #85122 <https://github.com/rust-lang/rust/issues/85122> for more information
   = help: add `#![feature(unchecked_math)]` to the crate attributes to enable
   = note: this compiler was built on 2024-04-29; consider upgrading it if it is out of date

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