Re: [linux-next:master 5069/12910] include/linux/build_bug.h:78:41: error: static assertion failed: "sizeof(struct utp_upiu_header) == 12"

[Philip Li <philip.li@intel.com>]

On Fri, Aug 25, 2023 at 10:00:47AM -0700, Bart Van Assche wrote:
> On 8/25/23 02:07, kernel test robot wrote:
> > tree:   https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
> > head:   6269320850097903b30be8f07a5c61d9f7592393
> > commit: 617bfaa8dd50d6a3ffc8694b4696bf2aa196bd44 [5069/12910] scsi: ufs: Simplify response header parsing
> > config: arm-randconfig-r001-20230825 (https://download.01.org/0day-ci/archive/20230825/202308251634.tuRn4OVv-lkp@intel.com/config)
> > compiler: arm-linux-gnueabi-gcc (GCC) 13.2.0
> > reproduce: (https://download.01.org/0day-ci/archive/20230825/202308251634.tuRn4OVv-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/202308251634.tuRn4OVv-lkp@intel.com/
> > 
> > All errors (new ones prefixed by >>):
> > 
> >     In file included from include/linux/container_of.h:5,
> >                      from include/linux/list.h:5,
> >                      from include/linux/async.h:12,
> >                      from drivers/ufs/core/ufshcd.c:12:
> > > > include/linux/build_bug.h:78:41: error: static assertion failed: "sizeof(struct utp_upiu_header) == 12"
> >        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)
> >           |                                  ^~~~~~~~~~~~~~~
> >     include/ufs/ufs.h:22:1: note: in expansion of macro 'static_assert'
> >        22 | static_assert(sizeof(struct utp_upiu_header) == 12);
> >           | ^~~~~~~~~~~~~
> 
> Can anyone tell me where to find the gcc binaries used by the kernel test

Hi Bart, the gcc binary we use is put at [1]

You may also give a try for the reproduce step [2] which might help to
ease the reproduce. If it has issue to access the url or other issue
during reproduce, you can try to

	export URL=https://cdn.kernel.org/pub/tools/crosstool/files/bin/x86_64

Then rerun the make.cross command of reproduce step. Kindly let us know if there's
any issue.

[1] https://download.01.org/0day-ci/cross-package/gcc-13.2.0-nolibc/x86_64-gcc-13.2.0-nolibc_arm-linux-gnueabi.tar.xz
[2] https://download.01.org/0day-ci/archive/20230825/202308251634.tuRn4OVv-lkp@intel.com/reproduce

> robot? I cannot reproduce the above build error with
> arm-linux-gnueabi-gcc 13.2.0 from godbolt.org.
> 
> This is the code that I provided as input to godbolt.org:
> 
> #include <stdint.h>
> 
> #define __LITTLE_ENDIAN 1
> 
> typedef uint32_t __be32;
> typedef uint16_t __be16;
> typedef uint8_t __u8;
> 
> struct utp_upiu_header {
> 	union {
> 		struct {
> 			__be32 dword_0;
> 			__be32 dword_1;
> 			__be32 dword_2;
> 		};
> 		struct {
> 			__u8 transaction_code;
> 			__u8 flags;
> 			__u8 lun;
> 			__u8 task_tag;
> #if defined(__BIG_ENDIAN)
> 			__u8 iid: 4;
> 			__u8 command_set_type: 4;
> #elif defined(__LITTLE_ENDIAN)
> 			__u8 command_set_type: 4;
> 			__u8 iid: 4;
> #else
> #error
> #endif
> 			union {
> 				__u8 tm_function;
> 				__u8 query_function;
> 			};
> 			__u8 response;
> 			__u8 status;
> 			__u8 ehs_length;
> 			__u8 device_information;
> 			__be16 data_segment_length;
> 		};
> 	};
> };
> 
> static_assert(sizeof(struct utp_upiu_header) == 12, "");
> 
> Thanks,
> 
> Bart.
>