Subject: Re: [PATCH 1/5] kexec_core: move kdump related codes from crash_core.c to kexec_core.c

From: Baoquan He <[email-masked]>
Date: Sun, 7 Jan 2024 21:58:10 +0800

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/[email-masked]/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/[email-masked]/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 <[email-masked]>
> | Closes: https://lore.kernel.org/oe-kbuild-all/[email-masked]/
> 
> 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':
> >> 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/