On 01/06/24 at 06:59pm, kernel test robot wrote:

Hi Baoquan,

kernel test robot noticed the following build errors:

[auto build test ERROR on linus/master]
[also build test ERROR on v6.7-rc8]
[cannot apply to powerpc/next powerpc/fixes tip/x86/core arm64/for-next/core next-20240105]
[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/Baoquan-He/kexec_core-move-kdump-related-codes-from-crash_core-c-to-kexec_core-c/20240105-223735
base:   linus/master
patch link:    https://lore.kernel.org/r/20240105103305.557273-2-bhe%40redhat.com
patch subject: [PATCH 1/5] kexec_core: move kdump related codes from crash_core.c to kexec_core.c
config: x86_64-randconfig-104-20240106 (https://download.01.org/0day-ci/archive/20240106/202401061800.3XPSaPsa-lkp@intel.com/config)
compiler: gcc-12 (Debian 12.2.0-14) 12.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240106/202401061800.3XPSaPsa-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 [off-list ref]
| Closes: https://lore.kernel.org/oe-kbuild-all/202401061800.3XPSaPsa-lkp@intel.com/ (local)

All errors (new ones prefixed by >>):

   In file included from include/linux/string.h:11,
                    from include/linux/bitmap.h:12,
                    from include/linux/cpumask.h:12,
                    from include/linux/smp.h:13,
                    from arch/x86/kernel/crash.c:18:
   arch/x86/kernel/crash.c: In function 'fill_up_crash_elf_data':

quoted

quoted

include/linux/overflow.h:293:23: error: invalid application of 'sizeof' to incomplete type 'struct crash_mem'

     293 |                 sizeof(*(p)) + flex_array_size(p, member, count),       \

Thanks for reporting.
This is the same as the one reported and fixed in below link:

https://lore.kernel.org/oe-kbuild-all/ZZpmP5QeH+VigqXw@MiWiFi-R3L-srv/ (local)