[block:io_uring-fops.v3 24/27] include/linux/compiler_types.h:320:38: error: call to '__compiletime_assert_797' declared with attribute error: BUILD_BUG_ON failed: sizeof(struct io_uring_cmd) != 56

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

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tree:   https://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux-block.git io_uring-fops.v3
head:   fc74532df45f1f2515ccb973f29e7b9acd1a89ad
commit: 5a56e3f84485107c7e37f80eeca0a073a7cb333a [24/27] io_uring: add support for IORING_OP_URING_CMD
config: m68k-randconfig-s032-20210221 (attached as .config)
compiler: m68k-linux-gcc (GCC) 9.3.0
reproduce:
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # apt-get install sparse
        # sparse version: v0.6.3-229-g60c1f270-dirty
        # https://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux-block.git/commit/?id=5a56e3f84485107c7e37f80eeca0a073a7cb333a
        git remote add block https://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux-block.git
        git fetch --no-tags block io_uring-fops.v3
        git checkout 5a56e3f84485107c7e37f80eeca0a073a7cb333a
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=m68k 

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 >>):

   In file included from include/linux/kernel.h:10,
                    from fs/io_uring.c:42:
   include/linux/scatterlist.h: In function 'sg_set_buf':
   arch/m68k/include/asm/page_no.h:33:50: warning: ordered comparison of pointer with null pointer [-Wextra]
      33 | #define virt_addr_valid(kaddr) (((void *)(kaddr) >= (void *)PAGE_OFFSET) && \
         |                                                  ^~
   include/linux/compiler.h:78:42: note: in definition of macro 'unlikely'
      78 | # define unlikely(x) __builtin_expect(!!(x), 0)
         |                                          ^
   include/linux/scatterlist.h:137:2: note: in expansion of macro 'BUG_ON'
     137 |  BUG_ON(!virt_addr_valid(buf));
         |  ^~~~~~
   include/linux/scatterlist.h:137:10: note: in expansion of macro 'virt_addr_valid'
     137 |  BUG_ON(!virt_addr_valid(buf));
         |          ^~~~~~~~~~~~~~~
   In file included from <command-line>:
   fs/io_uring.c: In function 'io_uring_init':
>> include/linux/compiler_types.h:320:38: error: call to '__compiletime_assert_797' declared with attribute error: BUILD_BUG_ON failed: sizeof(struct io_uring_cmd) != 56
     320 |  _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
         |                                      ^
   include/linux/compiler_types.h:301:4: note: in definition of macro '__compiletime_assert'
     301 |    prefix ## suffix();    \
         |    ^~~~~~
   include/linux/compiler_types.h:320:2: note: in expansion of macro '_compiletime_assert'
     320 |  _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:50:2: note: in expansion of macro 'BUILD_BUG_ON_MSG'
      50 |  BUILD_BUG_ON_MSG(condition, "BUILD_BUG_ON failed: " #condition)
         |  ^~~~~~~~~~~~~~~~
   fs/io_uring.c:9939:2: note: in expansion of macro 'BUILD_BUG_ON'
    9939 |  BUILD_BUG_ON(sizeof(struct io_uring_cmd) != 56);
         |  ^~~~~~~~~~~~
>> include/linux/compiler_types.h:320:38: error: call to '__compiletime_assert_798' declared with attribute error: BUILD_BUG_ON failed: sizeof(struct io_uring_cmd) != (8 + sizeof(struct io_uring_sqe) - offsetof(struct io_uring_sqe, cmd_pdu_start))
     320 |  _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
         |                                      ^
   include/linux/compiler_types.h:301:4: note: in definition of macro '__compiletime_assert'
     301 |    prefix ## suffix();    \
         |    ^~~~~~
   include/linux/compiler_types.h:320:2: note: in expansion of macro '_compiletime_assert'
     320 |  _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:50:2: note: in expansion of macro 'BUILD_BUG_ON_MSG'
      50 |  BUILD_BUG_ON_MSG(condition, "BUILD_BUG_ON failed: " #condition)
         |  ^~~~~~~~~~~~~~~~
   fs/io_uring.c:9940:2: note: in expansion of macro 'BUILD_BUG_ON'
    9940 |  BUILD_BUG_ON(sizeof(struct io_uring_cmd) !=
         |  ^~~~~~~~~~~~


vim +/__compiletime_assert_797 +320 include/linux/compiler_types.h

eb5c2d4b45e3d2 Will Deacon 2020-07-21  306  
eb5c2d4b45e3d2 Will Deacon 2020-07-21  307  #define _compiletime_assert(condition, msg, prefix, suffix) \
eb5c2d4b45e3d2 Will Deacon 2020-07-21  308  	__compiletime_assert(condition, msg, prefix, suffix)
eb5c2d4b45e3d2 Will Deacon 2020-07-21  309  
eb5c2d4b45e3d2 Will Deacon 2020-07-21  310  /**
eb5c2d4b45e3d2 Will Deacon 2020-07-21  311   * compiletime_assert - break build and emit msg if condition is false
eb5c2d4b45e3d2 Will Deacon 2020-07-21  312   * @condition: a compile-time constant condition to check
eb5c2d4b45e3d2 Will Deacon 2020-07-21  313   * @msg:       a message to emit if condition is false
eb5c2d4b45e3d2 Will Deacon 2020-07-21  314   *
eb5c2d4b45e3d2 Will Deacon 2020-07-21  315   * In tradition of POSIX assert, this macro will break the build if the
eb5c2d4b45e3d2 Will Deacon 2020-07-21  316   * supplied condition is *false*, emitting the supplied error message if the
eb5c2d4b45e3d2 Will Deacon 2020-07-21  317   * compiler has support to do so.
eb5c2d4b45e3d2 Will Deacon 2020-07-21  318   */
eb5c2d4b45e3d2 Will Deacon 2020-07-21  319  #define compiletime_assert(condition, msg) \
eb5c2d4b45e3d2 Will Deacon 2020-07-21 @320  	_compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
eb5c2d4b45e3d2 Will Deacon 2020-07-21  321  

:::::: The code at line 320 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>

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

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