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* [alobakin:idpf-libie-new 49/62] include/net/libeth/xdp.h:36:15: error: static assertion failed due to requirement '!(sizeof(struct xdp_buff_xsk) % __alignof(struct libeth_xdp_buff))': !(sizeof(struct xdp_buff_xsk) % __alignof__(struct libeth_xdp_buff))
@ 2024-03-09 21:26 kernel test robot
  0 siblings, 0 replies; only message in thread
From: kernel test robot @ 2024-03-09 21:26 UTC (permalink / raw)
  To: Alexander Lobakin; +Cc: llvm, oe-kbuild-all

tree:   https://github.com/alobakin/linux idpf-libie-new
head:   f896c293302a9ec5710485e2bff89b49bb4a77d2
commit: 3161fd810043b6d1e6e65c6b2702230c99f37f6f [49/62] libie: add a couple of XDP helpers
config: i386-randconfig-003-20240309 (https://download.01.org/0day-ci/archive/20240310/202403100511.4xsZI0aX-lkp@intel.com/config)
compiler: clang version 17.0.6 (https://github.com/llvm/llvm-project 6009708b4367171ccdbf4b5905cb6a803753fe18)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240310/202403100511.4xsZI0aX-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202403100511.4xsZI0aX-lkp@intel.com/

All errors (new ones prefixed by >>):

   In file included from drivers/net/ethernet/intel/libeth/tx.c:4:
>> include/net/libeth/xdp.h:36:15: error: static assertion failed due to requirement '!(sizeof(struct xdp_buff_xsk) % __alignof(struct libeth_xdp_buff))': !(sizeof(struct xdp_buff_xsk) % __alignof__(struct libeth_xdp_buff))
      36 | static_assert(!(sizeof(struct xdp_buff_xsk) %
         |               ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
      37 |                 __alignof__(struct libeth_xdp_buff)));
         |                 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   include/linux/build_bug.h:77:50: note: expanded from macro 'static_assert'
      77 | #define static_assert(expr, ...) __static_assert(expr, ##__VA_ARGS__, #expr)
         |                                                  ^~~~
   include/linux/build_bug.h:78:56: note: expanded from macro '__static_assert'
      78 | #define __static_assert(expr, msg, ...) _Static_assert(expr, msg)
         |                                                        ^~~~
   1 error generated.


vim +36 include/net/libeth/xdp.h

    22	
    23	struct libeth_xdp_buff {
    24		union {
    25			struct xdp_buff		base;
    26			void			*data;
    27		};
    28	
    29		const void			*desc;
    30		u8				priv[];
    31	} __aligned_largest;
    32	static_assert(offsetof(struct libeth_xdp_buff, data) ==
    33		      offsetof(struct xdp_buff_xsk, xdp.data));
    34	static_assert(offsetof(struct libeth_xdp_buff, desc) ==
    35		      offsetof(struct xdp_buff_xsk, cb));
  > 36	static_assert(!(sizeof(struct xdp_buff_xsk) %
    37			__alignof__(struct libeth_xdp_buff)));
    38	

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki

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2024-03-09 21:26 [alobakin:idpf-libie-new 49/62] include/net/libeth/xdp.h:36:15: error: static assertion failed due to requirement '!(sizeof(struct xdp_buff_xsk) % __alignof(struct libeth_xdp_buff))': !(sizeof(struct xdp_buff_xsk) % __alignof__(struct libeth_xdp_buff)) kernel test robot

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