Re: [net-next v1 2/2] seg6: add NEXT-C-SID support for SRv6 End behavior

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

Hi Andrea,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on net-next/master]

url:    https://github.com/intel-lab-lkp/linux/commits/Andrea-Mayer/seg6-add-NEXT-C-SID-support-for-SRv6-End-behavior/20220611-185055
base:   https://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next.git 27f2533bcc6e909b85d3c1b738fa1f203ed8a835
config: csky-buildonly-randconfig-r006-20220613 (https://download.01.org/0day-ci/archive/20220614/202206141513.QKv7c89J-lkp@intel.com/config)
compiler: csky-linux-gcc (GCC) 11.3.0
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://github.com/intel-lab-lkp/linux/commit/5d121eb7b2b3ceb14906485b89e9c90dfa16b3c9
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review Andrea-Mayer/seg6-add-NEXT-C-SID-support-for-SRv6-End-behavior/20220611-185055
        git checkout 5d121eb7b2b3ceb14906485b89e9c90dfa16b3c9
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.3.0 make.cross W=1 O=build_dir ARCH=csky SHELL=/bin/bash net/

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

All errors (new ones prefixed by >>):

   In file included from <command-line>:
   net/ipv6/seg6_local.c: In function 'seg6_local_init':
>> include/linux/compiler_types.h:352:45: error: call to '__compiletime_assert_593' declared with attribute error: BUILD_BUG_ON failed: seg6_chk_next_csid_cfg(SEG6_LOCAL_LCBLOCK_DLEN, SEG6_LOCAL_LCNODE_FN_DLEN) != 0
     352 |         _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
         |                                             ^
   include/linux/compiler_types.h:333:25: note: in definition of macro '__compiletime_assert'
     333 |                         prefix ## suffix();                             \
         |                         ^~~~~~
   include/linux/compiler_types.h:352:9: note: in expansion of macro '_compiletime_assert'
     352 |         _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)
         |         ^~~~~~~~~~~~~~~~
   net/ipv6/seg6_local.c:2278:9: note: in expansion of macro 'BUILD_BUG_ON'
    2278 |         BUILD_BUG_ON(seg6_chk_next_csid_cfg(SEG6_LOCAL_LCBLOCK_DLEN,
         |         ^~~~~~~~~~~~


vim +/__compiletime_assert_593 +352 include/linux/compiler_types.h

eb5c2d4b45e3d2 Will Deacon 2020-07-21  338  
eb5c2d4b45e3d2 Will Deacon 2020-07-21  339  #define _compiletime_assert(condition, msg, prefix, suffix) \
eb5c2d4b45e3d2 Will Deacon 2020-07-21  340  	__compiletime_assert(condition, msg, prefix, suffix)
eb5c2d4b45e3d2 Will Deacon 2020-07-21  341  
eb5c2d4b45e3d2 Will Deacon 2020-07-21  342  /**
eb5c2d4b45e3d2 Will Deacon 2020-07-21  343   * compiletime_assert - break build and emit msg if condition is false
eb5c2d4b45e3d2 Will Deacon 2020-07-21  344   * @condition: a compile-time constant condition to check
eb5c2d4b45e3d2 Will Deacon 2020-07-21  345   * @msg:       a message to emit if condition is false
eb5c2d4b45e3d2 Will Deacon 2020-07-21  346   *
eb5c2d4b45e3d2 Will Deacon 2020-07-21  347   * In tradition of POSIX assert, this macro will break the build if the
eb5c2d4b45e3d2 Will Deacon 2020-07-21  348   * supplied condition is *false*, emitting the supplied error message if the
eb5c2d4b45e3d2 Will Deacon 2020-07-21  349   * compiler has support to do so.
eb5c2d4b45e3d2 Will Deacon 2020-07-21  350   */
eb5c2d4b45e3d2 Will Deacon 2020-07-21  351  #define compiletime_assert(condition, msg) \
eb5c2d4b45e3d2 Will Deacon 2020-07-21 @352  	_compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
eb5c2d4b45e3d2 Will Deacon 2020-07-21  353  

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