Subject: Re: [PATCH v4 2/2] arm64,ppc64le/kdump: pass dm-crypt keys to kdump kernel

From: Coiby Xu <[email-masked]>
Date: Thu, 12 Feb 2026 10:22:10 +0800

On Thu, Feb 12, 2026 at 06:35:52AM +0800, kernel test robot wrote:
>Hi Coiby,
>
>kernel test robot noticed the following build errors:
>
>[auto build test ERROR on 2619c62b7ef2f463bcbbb34af122689c09855c23]
>
>url:    https://github.com/intel-lab-lkp/linux/commits/Coiby-Xu/crash_dump-dm-crypt-Don-t-print-in-arch-specific-code/20260211-162729
>base:   2619c62b7ef2f463bcbbb34af122689c09855c23
>patch link:    https://lore.kernel.org/r/20260211082401.2407853-3-coxu%40redhat.com
>patch subject: [PATCH v4 2/2] arm64,ppc64le/kdump: pass dm-crypt keys to kdump kernel
>config: powerpc64-randconfig-r111-20260212 (https://download.01.org/0day-ci/archive/20260212/[email-masked]/config)
>compiler: powerpc64-linux-gcc (GCC) 11.5.0
>reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260212/[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 >>):
>
>   arch/powerpc/kexec/elf_64.c: In function 'elf64_load':
>>> arch/powerpc/kexec/elf_64.c:82:23: error: implicit declaration of function 'crash_load_dm_crypt_keys' [-Werror=implicit-function-declaration]
>      82 |                 ret = crash_load_dm_crypt_keys(image);
>         |                       ^~~~~~~~~~~~~~~~~~~~~~~~
>   cc1: some warnings being treated as errors

Thanks for reporting this issue. I'll fix this issue in new patch set.

-- 
Best regards,
Coiby