[kees:for-next/overflow 27/30] ./usr/include/rdma/rdma_user_rxe.h:134:24: error: unknown type name 'u8'

[kernel test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/kees/linux.git for-next/overflow
head:   7d8aac16a0a831d3ce4948ed18d812ad2e2224ac
commit: a908f2e5a6d0bc09c52c5674477b9e457e645e88 [27/30] treewide: Replace open-coded flex arrays in unions
config: x86_64-randconfig-a006-20210826 (attached as .config)
compiler: gcc-9 (Debian 9.3.0-22) 9.3.0
reproduce (this is a W=1 build):
        # https://git.kernel.org/pub/scm/linux/kernel/git/kees/linux.git/commit/?id=a908f2e5a6d0bc09c52c5674477b9e457e645e88
        git remote add kees https://git.kernel.org/pub/scm/linux/kernel/git/kees/linux.git
        git fetch --no-tags kees for-next/overflow
        git checkout a908f2e5a6d0bc09c52c5674477b9e457e645e88
        # save the attached .config to linux build tree
        mkdir build_dir
        make W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash

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

All errors (new ones prefixed by >>):

   In file included from ./usr/include/linux/posix_types.h:5,
                    from ./usr/include/linux/types.h:9,
                    from ./usr/include/rdma/rdma_user_rxe.h:37,
                    from <command-line>:32:
>> ./usr/include/rdma/rdma_user_rxe.h:134:24: error: unknown type name 'u8'
     134 |   __DECLARE_FLEX_ARRAY(u8, inline_data);
         |                        ^~
   ./usr/include/linux/stddef.h:42:3: note: in definition of macro '__DECLARE_FLEX_ARRAY'
      42 |   TYPE NAME[]; \
         |   ^~~~

---
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