[jj-apparmor:apparmor-next 5/8] ld.lld: error: undefined symbol: zstd_decompress_dctx

kernel test robot <[email protected]> Fri, 31 Jul 2026 10:28:41 +0800
Newsgroups dev.linux.lists.llvm,dev.linux.lists.oe-kbuild-all
Message-ID <[email protected]>
tree:   https://git.kernel.org/pub/scm/linux/kernel/git/jj/linux-apparmor.git apparmor-next
head:   9e4c1ef73b4301c5f9dc918982dd4f1ffb3e1052
commit: c431011ab65fd4ef205e3ce8cfc4b031c67768d9 [5/8] apparmor: replace decompress_zstd() prototype with its entity
config: arm-randconfig-002-20260731 (https://download.01.org/0day-ci/archive/20260731/[email protected]/config)
compiler: clang version 19.1.7 (https://github.com/llvm/llvm-project cd708029e0b2869e80abe31ddb175f7c35361f90)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260731/[email protected]/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 protected]>
| Closes: https://lore.kernel.org/oe-kbuild-all/[email protected]/

All errors (new ones prefixed by >>):

>> ld.lld: error: undefined symbol: zstd_decompress_dctx
   >>> referenced by apparmorfs.c:506 (security/apparmor/apparmorfs.c:506)
   >>>               security/apparmor/apparmorfs.o:(decompress_zstd) in archive vmlinux.a
--
>> ld.lld: error: undefined symbol: zstd_is_error
   >>> referenced by apparmorfs.c:507 (security/apparmor/apparmorfs.c:507)
   >>>               security/apparmor/apparmorfs.o:(decompress_zstd) in archive vmlinux.a

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