Re: [PATCH RFC v2 5/5] zram: Add lz4 PoC for zcomp-managed streams

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

Hi Jihan,

[This is a private test report for your RFC patch.]
kernel test robot noticed the following build errors:

[auto build test ERROR on 11439c4635edd669ae435eec308f4ab8a0804808]

url:    https://github.com/intel-lab-lkp/linux/commits/Jihan-LIN-via-B4-Relay/zram-Rename-zcomp_strm_-init-free/20260309-205805
base:   11439c4635edd669ae435eec308f4ab8a0804808
patch link:    https://lore.kernel.org/r/20260309-b4_zcomp_stream-v2-5-7148622326eb%40gmail.com
patch subject: [PATCH RFC v2 5/5] zram: Add lz4 PoC for zcomp-managed streams
config: csky-allmodconfig (https://download.01.org/0day-ci/archive/20260312/202603120814.rJ0HCHXj-lkp@intel.com/config)
compiler: csky-linux-gcc (GCC) 15.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260312/202603120814.rJ0HCHXj-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/202603120814.rJ0HCHXj-lkp@intel.com/

All errors (new ones prefixed by >>):

   In file included from <command-line>:
   In function 'lz4_compress_managed',
       inlined from 'lz4_compress' at drivers/block/zram/backend_lz4.c:455:9:
>> include/linux/compiler_types.h:706:45: error: call to '__compiletime_assert_155' declared with attribute error: BUILD_BUG_ON failed: IS_ENABLED(CONFIG_HIGHMEM)
     706 |         _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
         |                                             ^
   include/linux/compiler_types.h:687:25: note: in definition of macro '__compiletime_assert'
     687 |                         prefix ## suffix();                             \
         |                         ^~~~~~
   include/linux/compiler_types.h:706:9: note: in expansion of macro '_compiletime_assert'
     706 |         _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
         |         ^~~~~~~~~~~~~~~~~~~
   include/linux/build_bug.h:39:37: note: in expansion of macro 'compiletime_assert'
      39 | #define BUILD_BUG_ON_MSG(cond, msg) compiletime_assert(!(cond), msg)
         |                                     ^~~~~~~~~~~~~~~~~~
   include/linux/build_bug.h:50:9: note: in expansion of macro 'BUILD_BUG_ON_MSG'
      50 |         BUILD_BUG_ON_MSG(condition, "BUILD_BUG_ON failed: " #condition)
         |         ^~~~~~~~~~~~~~~~
   drivers/block/zram/backend_lz4.c:436:17: note: in expansion of macro 'BUILD_BUG_ON'
     436 |                 BUILD_BUG_ON(IS_ENABLED(CONFIG_HIGHMEM));
         |                 ^~~~~~~~~~~~
--
   In file included from <command-line>:
   In function 'lz4_compress_managed',
       inlined from 'lz4_compress' at backend_lz4.c:455:9:
>> include/linux/compiler_types.h:706:45: error: call to '__compiletime_assert_155' declared with attribute error: BUILD_BUG_ON failed: IS_ENABLED(CONFIG_HIGHMEM)
     706 |         _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
         |                                             ^
   include/linux/compiler_types.h:687:25: note: in definition of macro '__compiletime_assert'
     687 |                         prefix ## suffix();                             \
         |                         ^~~~~~
   include/linux/compiler_types.h:706:9: note: in expansion of macro '_compiletime_assert'
     706 |         _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
         |         ^~~~~~~~~~~~~~~~~~~
   include/linux/build_bug.h:39:37: note: in expansion of macro 'compiletime_assert'
      39 | #define BUILD_BUG_ON_MSG(cond, msg) compiletime_assert(!(cond), msg)
         |                                     ^~~~~~~~~~~~~~~~~~
   include/linux/build_bug.h:50:9: note: in expansion of macro 'BUILD_BUG_ON_MSG'
      50 |         BUILD_BUG_ON_MSG(condition, "BUILD_BUG_ON failed: " #condition)
         |         ^~~~~~~~~~~~~~~~
   backend_lz4.c:436:17: note: in expansion of macro 'BUILD_BUG_ON'
     436 |                 BUILD_BUG_ON(IS_ENABLED(CONFIG_HIGHMEM));
         |                 ^~~~~~~~~~~~


vim +/__compiletime_assert_155 +706 include/linux/compiler_types.h

eb5c2d4b45e3d2d Will Deacon 2020-07-21  692  
eb5c2d4b45e3d2d Will Deacon 2020-07-21  693  #define _compiletime_assert(condition, msg, prefix, suffix) \
eb5c2d4b45e3d2d Will Deacon 2020-07-21  694  	__compiletime_assert(condition, msg, prefix, suffix)
eb5c2d4b45e3d2d Will Deacon 2020-07-21  695  
eb5c2d4b45e3d2d Will Deacon 2020-07-21  696  /**
eb5c2d4b45e3d2d Will Deacon 2020-07-21  697   * compiletime_assert - break build and emit msg if condition is false
eb5c2d4b45e3d2d Will Deacon 2020-07-21  698   * @condition: a compile-time constant condition to check
eb5c2d4b45e3d2d Will Deacon 2020-07-21  699   * @msg:       a message to emit if condition is false
eb5c2d4b45e3d2d Will Deacon 2020-07-21  700   *
eb5c2d4b45e3d2d Will Deacon 2020-07-21  701   * In tradition of POSIX assert, this macro will break the build if the
eb5c2d4b45e3d2d Will Deacon 2020-07-21  702   * supplied condition is *false*, emitting the supplied error message if the
eb5c2d4b45e3d2d Will Deacon 2020-07-21  703   * compiler has support to do so.
eb5c2d4b45e3d2d Will Deacon 2020-07-21  704   */
eb5c2d4b45e3d2d Will Deacon 2020-07-21  705  #define compiletime_assert(condition, msg) \
eb5c2d4b45e3d2d Will Deacon 2020-07-21 @706  	_compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
eb5c2d4b45e3d2d Will Deacon 2020-07-21  707  

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