linux-kernel - Re: [PATCH v6 2/2] crash: Add KUnit tests for crash_exclude_mem

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Message-ID: <x33mpzp6bhnx2awnszjymuyfhgmtvq5hhfs6aoyvuoo6opsbqr@tkegmqv3lucp>
Date: Mon, 15 Sep 2025 14:17:51 +0800
From: Coiby Xu <coxu@...hat.com>
To: kernel test robot <lkp@...el.com>
Cc: kexec@...ts.infradead.org, llvm@...ts.linux.dev, 
	oe-kbuild-all@...ts.linux.dev, fuqiang wang <fuqiang.wang@...ystack.cn>, x86@...nel.org, 
	Andrew Morton <akpm@...ux-foundation.org>, Linux Memory Management List <linux-mm@...ck.org>, 
	Baoquan He <bhe@...hat.com>, Vivek Goyal <vgoyal@...hat.com>, Dave Young <dyoung@...hat.com>, 
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v6 2/2] crash: Add KUnit tests for crash_exclude_mem_range

On Tue, Sep 09, 2025 at 05:25:17AM +0800, kernel test robot wrote:
>Hi Coiby,

Hi,

>
>kernel test robot noticed the following build errors:
>
>[auto build test ERROR on b320789d6883cc00ac78ce83bccbfe7ed58afcf0]
>
>url:    https://github.com/intel-lab-lkp/linux/commits/Coiby-Xu/crash-Add-KUnit-tests-for-crash_exclude_mem_range/20250904-174105
>base:   b320789d6883cc00ac78ce83bccbfe7ed58afcf0
>patch link:    https://lore.kernel.org/r/20250904093855.1180154-2-coxu%40redhat.com
>patch subject: [PATCH v6 2/2] crash: Add KUnit tests for crash_exclude_mem_range
>config: x86_64-randconfig-073-20250908 (https://download.01.org/0day-ci/archive/20250909/202509090415.cOytgte4-lkp@intel.com/config)
>compiler: clang version 20.1.8 (https://github.com/llvm/llvm-project 87f0227cb60147a26a1eeb4fb06e3b505e9c7261)
>reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250909/202509090415.cOytgte4-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@...el.com>
>| Closes: https://lore.kernel.org/oe-kbuild-all/202509090415.cOytgte4-lkp@intel.com/
>
>All errors (new ones prefixed by >>, old ones prefixed by <<):
>
>>> ERROR: modpost: "crash_exclude_mem_range" [kernel/crash_core_test.ko] undefined!

Thanks for reporting this problem. This issue has already been fixed by
Andrew [1][2] earlier.

This issue happens because the KUnit tests can be built and run as a
kernel module. 

[1] https://lore.kernel.org/mm-commits/20250905031921.E0A26C4CEF0@smtp.kernel.org/
[2] https://lore.kernel.org/mm-commits/20250914001748.77104C4CEEB@smtp.kernel.org/

>
>-- 
>0-DAY CI Kernel Test Service
>https://github.com/intel/lkp-tests/wiki
>

-- 
Best regards,
Coiby