Re: [PATCH v6 01/18] kasan: Unpoison pcpu chunks with base address tag

[kernel test robot <lkp@intel.com>]

Hi Maciej,

kernel test robot noticed the following build errors:

[auto build test ERROR on tip/x86/core]
[also build test ERROR on akpm-mm/mm-everything arm64/for-next/core linus/master v6.18-rc3 next-20251029]
[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/Maciej-Wieczor-Retman/kasan-Unpoison-pcpu-chunks-with-base-address-tag/20251030-041340
base:   tip/x86/core
patch link:    https://lore.kernel.org/r/fbce40a59b0a22a5735cb6e9b95c5a45a34b23cb.1761763681.git.m.wieczorretman%40pm.me
patch subject: [PATCH v6 01/18] kasan: Unpoison pcpu chunks with base address tag
config: powerpc-randconfig-r052-20251030 (https://download.01.org/0day-ci/archive/20251030/202510301029.qdXMX0br-lkp@intel.com/config)
compiler: clang version 22.0.0git (https://github.com/llvm/llvm-project d1c086e82af239b245fe8d7832f2753436634990)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251030/202510301029.qdXMX0br-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/202510301029.qdXMX0br-lkp@intel.com/

All errors (new ones prefixed by >>):

>> ld.lld: error: undefined symbol: __kasan_unpoison_vmap_areas
   >>> referenced by kasan.h:621 (include/linux/kasan.h:621)
   >>>               mm/vmalloc.o:(pcpu_get_vm_areas) in archive vmlinux.a

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