On Thu, Jan 04, 2024 at 05:32:32PM -0800, Pavan Kumar Linga wrote:
> In the arm random config file, kconfig option 'CONFIG_AEABI' is
> disabled which results in adding the compiler flag '-mabi=apcs-gnu'.
> This causes the compiler to add padding in virtchnl2_ptype
> structure to align it to 8 bytes, resulting in the following
> size check failure:
>
> include/linux/build_bug.h:78:41: error: static assertion failed: "(6) ==
> sizeof(struct virtchnl2_ptype)"
> 78 | #define __static_assert(expr, msg, ...) _Static_assert(expr, msg)
> | ^~~~~~~~~~~~~~
> include/linux/build_bug.h:77:34: note: in expansion of macro '__static_assert'
> 77 | #define static_assert(expr, ...) __static_assert(expr,
> ##__VA_ARGS__, #expr)
> | ^~~~~~~~~~~~~~~
> drivers/net/ethernet/intel/idpf/virtchnl2.h:26:9: note: in expansion of macro
> 'static_assert'
> 26 | static_assert((n) == sizeof(struct X))
> | ^~~~~~~~~~~~~
> drivers/net/ethernet/intel/idpf/virtchnl2.h:982:1: note: in expansion of
> macro 'VIRTCHNL2_CHECK_STRUCT_LEN'
> 982 | VIRTCHNL2_CHECK_STRUCT_LEN(6, virtchnl2_ptype);
> | ^~~~~~~~~~~~~~~~~~~~~~~~~~
>
> Avoid the compiler padding by using "__packed" structure
> attribute for the virtchnl2_ptype struct.
>
> Fixes: 0d7502a9b4a7 ("virtchnl: add virtchnl version 2 ops")
> Reported-by: kernel test robot <[email protected]>
> Closes:
> https://lore.kernel.org/oe-kbuild-all/[email protected]
> Reviewed-by: Przemek Kitszel <[email protected]>
> Reviewed-by: Paul Menzel <[email protected]>
> Signed-off-by: Pavan Kumar Linga <[email protected]>
Reviewed-by: Simon Horman <[email protected]>
