[android-common:android16-6.12-2025-12 0/1] include/linux/dma-buf.h:547:2: error: static assertion failed due to requirement '__alignof(struct dma_buf::(unnamed at include/linux/dma-buf.h:547:2)) <= __alignof(struct dma_buf::(unnamed at include/linux/dma-buf.h:547:2))': include/linux/dma-buf.h:547:...

[android-common:android16-6.12-2025-12 0/1] include/linux/dma-buf.h:547:2: error: static assertion failed due to requirement '__alignof(struct dma_buf::(unnamed at include/linux/dma-buf.h:547:2)) <= __alignof(struct dma_buf::(unnamed at include/linux/dma-buf.h:547:2))': include/linux/dma-buf.h:547:...

[kernel test robot]

tree:   https://android.googlesource.com/kernel/common android16-6.12-2025-12
head:   59d87130986d0a57ef63b29b5e823ed093472d5a
commit: e24cc2d5218669b7412788d57528059ec6ecee4e [0/1] ANDROID: ABI: refresh, CRC fixups and allowed breaks
config: i386-randconfig-061-20260522 (https://download.01.org/0day-ci/archive/20260523/202605230131.GZ69Re8e-lkp@intel.com/config)
compiler: clang version 20.1.8 (https://github.com/llvm/llvm-project 87f0227cb60147a26a1eeb4fb06e3b505e9c7261)
sparse: v0.6.5-rc1
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260523/202605230131.GZ69Re8e-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/202605230131.GZ69Re8e-lkp@intel.com/

All errors (new ones prefixed by >>):

   In file included from fs/exec.c:72:
>> include/linux/dma-buf.h:547:2: error: static assertion failed due to requirement '__alignof(struct dma_buf::(unnamed at include/linux/dma-buf.h:547:2)) <= __alignof(struct dma_buf::(unnamed at include/linux/dma-buf.h:547:2))': include/linux/dma-buf.h:547: u64 __kabi_reserved_backport1 is not aligned the same as atomic64_t nr_task_refs
     547 |         ANDROID_BACKPORT_USE(1, atomic64_t nr_task_refs);
         |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   include/linux/android_kabi.h:189:2: note: expanded from macro 'ANDROID_BACKPORT_USE'
     189 |         _ANDROID_KABI_REPLACE(ANDROID_BACKPORT_RESERVE(number), _new)
         |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   include/linux/android_kabi.h:79:3: note: expanded from macro '_ANDROID_KABI_REPLACE'
      79 |                 _ANDROID_KABI_NORMAL_SIZE_ALIGN(_orig, _new); \
         |                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   include/linux/android_kabi.h:66:4: note: expanded from macro '_ANDROID_KABI_NORMAL_SIZE_ALIGN'
      66 |                         __alignof__(struct { _new; }) <=                \
         |                         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
      67 |                                 __alignof__(struct { _orig; }),         \
         |                                 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   include/linux/dma-buf.h:547:2: note: expression evaluates to '8 <= 4'
     547 |         ANDROID_BACKPORT_USE(1, atomic64_t nr_task_refs);
         |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   include/linux/android_kabi.h:189:2: note: expanded from macro 'ANDROID_BACKPORT_USE'
     189 |         _ANDROID_KABI_REPLACE(ANDROID_BACKPORT_RESERVE(number), _new)
         |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   include/linux/android_kabi.h:79:3: note: expanded from macro '_ANDROID_KABI_REPLACE'
      79 |                 _ANDROID_KABI_NORMAL_SIZE_ALIGN(_orig, _new); \
         |                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   include/linux/android_kabi.h:66:34: note: expanded from macro '_ANDROID_KABI_NORMAL_SIZE_ALIGN'
      66 |                         __alignof__(struct { _new; }) <=                \
         |                         ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~
      67 |                                 __alignof__(struct { _orig; }),         \
         |                                 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   1 error generated.


vim +547 include/linux/dma-buf.h

   539	
   540		ANDROID_KABI_RESERVE(1);
   541		ANDROID_KABI_RESERVE(2);
   542		/**
   543		 * @nr_task_refs:
   544		 *
   545		 * The number of tasks that reference this buffer. For calculating PSS.
   546		 */
 > 547		ANDROID_BACKPORT_USE(1, atomic64_t nr_task_refs);
   548	};
   549	

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