Re: [PATCH rdma-next v4] RDMA: Change capability fields in ib_device_attr from int to u32

[Erni Sri Satya Vennela]

On Fri, May 29, 2026 at 03:16:24AM +0800, kernel test robot wrote:
> Hi Erni,
> 
> kernel test robot noticed the following build errors:
> 
> [auto build test ERROR on rdma/for-next]
> [also build test ERROR on linus/master v7.1-rc5 next-20260528]
> [If your patch is applied to the wrong git tree, kindly drop us a note.
> And when submitting patch, we suggest to use '--base' as documented in
> https://git-scm.com/docs/git-format-patch#_base_tree_information]
> 
> url:    https://github.com/intel-lab-lkp/linux/commits/Erni-Sri-Satya-Vennela/RDMA-Change-capability-fields-in-ib_device_attr-from-int-to-u32/20260527-040218
> base:   https://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma.git for-next
> patch link:    https://lore.kernel.org/r/20260526194225.1338210-1-ernis%40linux.microsoft.com
> patch subject: [PATCH rdma-next v4] RDMA: Change capability fields in ib_device_attr from int to u32
> config: x86_64-rhel-9.4 (https://download.01.org/0day-ci/archive/20260529/202605290321.lRxnXfw4-lkp@xxxxxxxxx/config)
> compiler: gcc-14 (Debian 14.2.0-19) 14.2.0
> reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260529/202605290321.lRxnXfw4-lkp@xxxxxxxxx/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@xxxxxxxxx>
> | Closes: https://lore.kernel.org/oe-kbuild-all/202605290321.lRxnXfw4-lkp@xxxxxxxxx/
> 
> All errors (new ones prefixed by >>):
> 
>    In file included from <command-line>:
>    drivers/infiniband/hw/qedr/verbs.c: In function 'qedr_query_device':
> >> include/linux/compiler_types.h:699:45: error: call to '__compiletime_assert_818' declared with attribute error: min(1 << (fls(qattr->max_qp_resp_rd_atomic_resc) - 1), attr->max_qp_init_rd_atom) signedness error
>      699 |         _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
>          |                                             ^
>    include/linux/compiler_types.h:680:25: note: in definition of macro '__compiletime_assert'
>      680 |                         prefix ## suffix();                             \
>          |                         ^~~~~~
>    include/linux/compiler_types.h:699:9: note: in expansion of macro '_compiletime_assert'
>      699 |         _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
>          |         ^~~~~~~~~~~~~~~~~~~
>    include/linux/build_bug.h:40:37: note: in expansion of macro 'compiletime_assert'
>       40 | #define BUILD_BUG_ON_MSG(cond, msg) compiletime_assert(!(cond), msg)
>          |                                     ^~~~~~~~~~~~~~~~~~
>    include/linux/minmax.h:93:9: note: in expansion of macro 'BUILD_BUG_ON_MSG'
>       93 |         BUILD_BUG_ON_MSG(!__types_ok(ux, uy),           \
>          |         ^~~~~~~~~~~~~~~~
>    include/linux/minmax.h:98:9: note: in expansion of macro '__careful_cmp_once'
>       98 |         __careful_cmp_once(op, x, y, __UNIQUE_ID(x_), __UNIQUE_ID(y_))
>          |         ^~~~~~~~~~~~~~~~~~
>    include/linux/minmax.h:105:25: note: in expansion of macro '__careful_cmp'
>      105 | #define min(x, y)       __careful_cmp(min, x, y)
>          |                         ^~~~~~~~~~~~~
>    drivers/infiniband/hw/qedr/verbs.c:146:13: note: in expansion of macro 'min'
>      146 |             min(1 << (fls(qattr->max_qp_resp_rd_atomic_resc) - 1),
>          |             ^~~
> --
>    In file included from <command-line>:
>    verbs.c: In function 'qedr_query_device':
> >> include/linux/compiler_types.h:699:45: error: call to '__compiletime_assert_818' declared with attribute error: min(1 << (fls(qattr->max_qp_resp_rd_atomic_resc) - 1), attr->max_qp_init_rd_atom) signedness error
>      699 |         _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
>          |                                             ^
>    include/linux/compiler_types.h:680:25: note: in definition of macro '__compiletime_assert'
>      680 |                         prefix ## suffix();                             \
>          |                         ^~~~~~
>    include/linux/compiler_types.h:699:9: note: in expansion of macro '_compiletime_assert'
>      699 |         _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
>          |         ^~~~~~~~~~~~~~~~~~~
>    include/linux/build_bug.h:40:37: note: in expansion of macro 'compiletime_assert'
>       40 | #define BUILD_BUG_ON_MSG(cond, msg) compiletime_assert(!(cond), msg)
>          |                                     ^~~~~~~~~~~~~~~~~~
>    include/linux/minmax.h:93:9: note: in expansion of macro 'BUILD_BUG_ON_MSG'
>       93 |         BUILD_BUG_ON_MSG(!__types_ok(ux, uy),           \
>          |         ^~~~~~~~~~~~~~~~
>    include/linux/minmax.h:98:9: note: in expansion of macro '__careful_cmp_once'
>       98 |         __careful_cmp_once(op, x, y, __UNIQUE_ID(x_), __UNIQUE_ID(y_))
>          |         ^~~~~~~~~~~~~~~~~~
>    include/linux/minmax.h:105:25: note: in expansion of macro '__careful_cmp'
>      105 | #define min(x, y)       __careful_cmp(min, x, y)
>          |                         ^~~~~~~~~~~~~
>    verbs.c:146:13: note: in expansion of macro 'min'
>      146 |             min(1 << (fls(qattr->max_qp_resp_rd_atomic_resc) - 1),
>          |             ^~~
> 
> 
> vim +/__compiletime_assert_818 +699 include/linux/compiler_types.h
> 
> eb5c2d4b45e3d2 Will Deacon 2020-07-21  685  
> eb5c2d4b45e3d2 Will Deacon 2020-07-21  686  #define _compiletime_assert(condition, msg, prefix, suffix) \
> eb5c2d4b45e3d2 Will Deacon 2020-07-21  687  	__compiletime_assert(condition, msg, prefix, suffix)
> eb5c2d4b45e3d2 Will Deacon 2020-07-21  688  
> eb5c2d4b45e3d2 Will Deacon 2020-07-21  689  /**
> eb5c2d4b45e3d2 Will Deacon 2020-07-21  690   * compiletime_assert - break build and emit msg if condition is false
> eb5c2d4b45e3d2 Will Deacon 2020-07-21  691   * @condition: a compile-time constant condition to check
> eb5c2d4b45e3d2 Will Deacon 2020-07-21  692   * @msg:       a message to emit if condition is false
> eb5c2d4b45e3d2 Will Deacon 2020-07-21  693   *
> eb5c2d4b45e3d2 Will Deacon 2020-07-21  694   * In tradition of POSIX assert, this macro will break the build if the
> eb5c2d4b45e3d2 Will Deacon 2020-07-21  695   * supplied condition is *false*, emitting the supplied error message if the
> eb5c2d4b45e3d2 Will Deacon 2020-07-21  696   * compiler has support to do so.
> eb5c2d4b45e3d2 Will Deacon 2020-07-21  697   */
> eb5c2d4b45e3d2 Will Deacon 2020-07-21  698  #define compiletime_assert(condition, msg) \
> eb5c2d4b45e3d2 Will Deacon 2020-07-21 @699  	_compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
> eb5c2d4b45e3d2 Will Deacon 2020-07-21  700  
> 
> --
> 0-DAY CI Kernel Test Service
> https://github.com/intel/lkp-tests/wiki
I will fix this in the next version.

Thanks,
Vennela