include/linux/compiler_types.h:322:45: error: call to '__compiletime_assert_361' declared with attribute error: BUILD_BUG_ON failed: sizeof(struct prestera_msg_event_fdb) != 20

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

Hi Volodymyr,

FYI, the error/warning still remains.

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   e1f700ebd6bea293abe3c7e2807b252018efde01
commit: bb5dbf2cc64d5cfa696765944c784c0010c48ae8 net: marvell: prestera: add firmware v4.0 support
date:   5 months ago
config: arm-randconfig-p002-20220409 (https://download.01.org/0day-ci/archive/20220410/202204100943.VizFcCNT-lkp@intel.com/config)
compiler: arm-linux-gnueabi-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=bb5dbf2cc64d5cfa696765944c784c0010c48ae8
        git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
        git fetch --no-tags linus master
        git checkout bb5dbf2cc64d5cfa696765944c784c0010c48ae8
        # 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=arm SHELL=/bin/bash drivers/net/ethernet/marvell/prestera/

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

All errors (new ones prefixed by >>):

   drivers/net/ethernet/marvell/prestera/prestera_hw.c:284:1: warning: alignment 1 of 'union prestera_msg_port_param' is less than 4 [-Wpacked-not-aligned]
     284 | } __packed;
         | ^
   In file included from <command-line>:
   In function 'prestera_hw_build_tests',
       inlined from 'prestera_hw_switch_init' at drivers/net/ethernet/marvell/prestera/prestera_hw.c:788:2:
>> include/linux/compiler_types.h:322:45: error: call to '__compiletime_assert_361' declared with attribute error: BUILD_BUG_ON failed: sizeof(struct prestera_msg_event_fdb) != 20
     322 |         _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
         |                                             ^
   include/linux/compiler_types.h:303:25: note: in definition of macro '__compiletime_assert'
     303 |                         prefix ## suffix();                             \
         |                         ^~~~~~
   include/linux/compiler_types.h:322:9: note: in expansion of macro '_compiletime_assert'
     322 |         _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/net/ethernet/marvell/prestera/prestera_hw.c:531:9: note: in expansion of macro 'BUILD_BUG_ON'
     531 |         BUILD_BUG_ON(sizeof(struct prestera_msg_event_fdb) != 20);
         |         ^~~~~~~~~~~~


vim +/__compiletime_assert_361 +322 include/linux/compiler_types.h

eb5c2d4b45e3d2 Will Deacon 2020-07-21  308  
eb5c2d4b45e3d2 Will Deacon 2020-07-21  309  #define _compiletime_assert(condition, msg, prefix, suffix) \
eb5c2d4b45e3d2 Will Deacon 2020-07-21  310  	__compiletime_assert(condition, msg, prefix, suffix)
eb5c2d4b45e3d2 Will Deacon 2020-07-21  311  
eb5c2d4b45e3d2 Will Deacon 2020-07-21  312  /**
eb5c2d4b45e3d2 Will Deacon 2020-07-21  313   * compiletime_assert - break build and emit msg if condition is false
eb5c2d4b45e3d2 Will Deacon 2020-07-21  314   * @condition: a compile-time constant condition to check
eb5c2d4b45e3d2 Will Deacon 2020-07-21  315   * @msg:       a message to emit if condition is false
eb5c2d4b45e3d2 Will Deacon 2020-07-21  316   *
eb5c2d4b45e3d2 Will Deacon 2020-07-21  317   * In tradition of POSIX assert, this macro will break the build if the
eb5c2d4b45e3d2 Will Deacon 2020-07-21  318   * supplied condition is *false*, emitting the supplied error message if the
eb5c2d4b45e3d2 Will Deacon 2020-07-21  319   * compiler has support to do so.
eb5c2d4b45e3d2 Will Deacon 2020-07-21  320   */
eb5c2d4b45e3d2 Will Deacon 2020-07-21  321  #define compiletime_assert(condition, msg) \
eb5c2d4b45e3d2 Will Deacon 2020-07-21 @322  	_compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
eb5c2d4b45e3d2 Will Deacon 2020-07-21  323  

:::::: The code at line 322 was first introduced by commit
:::::: eb5c2d4b45e3d2d5d052ea6b8f1463976b1020d5 compiler.h: Move compiletime_assert() macros into compiler_types.h

:::::: TO: Will Deacon <will@kernel.org>
:::::: CC: Will Deacon <will@kernel.org>

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