linux-kernel - include/linux/compiler_types.h:338:45: error: call to '__compiletime_assert_268' declared with attribute error: BUILD_BUG_ON failed: IS_ENABLED(CONFIG_32BIT) && (_PFN_SHIFT > PAGE

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Date:   Fri, 31 Dec 2021 01:15:17 +0800
From:   kernel test robot <lkp@...el.com>
To:     Will Deacon <will@...nel.org>
Cc:     kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org
Subject: include/linux/compiler_types.h:338:45: error: call to
 '__compiletime_assert_268' declared with attribute error: BUILD_BUG_ON
 failed: IS_ENABLED(CONFIG_32BIT) && (_PFN_SHIFT > PAGE_SHIFT)

Hi Will,

FYI, the error/warning still remains.

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   eec4df26e24e978e49ccf9bcf49ca0f2ccdaeffe
commit: eb5c2d4b45e3d2d5d052ea6b8f1463976b1020d5 compiler.h: Move compiletime_assert() macros into compiler_types.h
date:   1 year, 5 months ago
config: mips-randconfig-r002-20211124 (https://download.01.org/0day-ci/archive/20211231/202112310155.JyoyeRR2-lkp@intel.com/config)
compiler: mips-linux-gcc (GCC) 11.2.0
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
        # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=eb5c2d4b45e3d2d5d052ea6b8f1463976b1020d5
        git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
        git fetch --no-tags linus master
        git checkout eb5c2d4b45e3d2d5d052ea6b8f1463976b1020d5
        # save the config file to linux build tree
        mkdir build_dir
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=mips SHELL=/bin/bash arch/mips/

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

All errors (new ones prefixed by >>):

   arch/mips/mm/init.c:61:6: warning: no previous prototype for 'setup_zero_pages' [-Wmissing-prototypes]
      61 | void setup_zero_pages(void)
         |      ^~~~~~~~~~~~~~~~
   In file included from <command-line>:
   arch/mips/mm/init.c: In function 'mem_init':
>> include/linux/compiler_types.h:338:45: error: call to '__compiletime_assert_268' declared with attribute error: BUILD_BUG_ON failed: IS_ENABLED(CONFIG_32BIT) && (_PFN_SHIFT > PAGE_SHIFT)
     338 |         _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
         |                                             ^
   include/linux/compiler_types.h:319:25: note: in definition of macro '__compiletime_assert'
     319 |                         prefix ## suffix();                             \
         |                         ^~~~~~
   include/linux/compiler_types.h:338:9: note: in expansion of macro '_compiletime_assert'
     338 |         _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)
         |         ^~~~~~~~~~~~~~~~
   arch/mips/mm/init.c:458:9: note: in expansion of macro 'BUILD_BUG_ON'
     458 |         BUILD_BUG_ON(IS_ENABLED(CONFIG_32BIT) && (_PFN_SHIFT > PAGE_SHIFT));
         |         ^~~~~~~~~~~~
   {standard input}: Assembler messages:
   {standard input}:555: Error: found '(', expected: ')'
   {standard input}:555: Error: found '(', expected: ')'
   {standard input}:555: Error: non-constant expression in ".if" statement
   {standard input}:555: Error: junk at end of line, first unrecognized character is `('


vim +/__compiletime_assert_268 +338 include/linux/compiler_types.h

   324	
   325	#define _compiletime_assert(condition, msg, prefix, suffix) \
   326		__compiletime_assert(condition, msg, prefix, suffix)
   327	
   328	/**
   329	 * compiletime_assert - break build and emit msg if condition is false
   330	 * @condition: a compile-time constant condition to check
   331	 * @msg:       a message to emit if condition is false
   332	 *
   333	 * In tradition of POSIX assert, this macro will break the build if the
   334	 * supplied condition is *false*, emitting the supplied error message if the
   335	 * compiler has support to do so.
   336	 */
   337	#define compiletime_assert(condition, msg) \
 > 338		_compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
   339	

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