linux-kernel - ld.lld: error: undefined symbol: memcpy

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Date:   Thu, 9 Mar 2023 05:01:04 +0800
From:   kernel test robot <lkp@...el.com>
To:     Marco Elver <elver@...gle.com>
Cc:     llvm@...ts.linux.dev, oe-kbuild-all@...ts.linux.dev,
        linux-kernel@...r.kernel.org,
        Andrew Morton <akpm@...ux-foundation.org>,
        Linux Memory Management List <linux-mm@...ck.org>,
        Andrey Konovalov <andreyknvl@...il.com>
Subject: ld.lld: error: undefined symbol: memcpy

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   63355b9884b3d1677de6bd1517cd2b8a9bf53978
commit: 36be5cba99f6f9984a9a9f0454f95a38f4184d3e kasan: treat meminstrinsic as builtins in uninstrumented files
date:   6 days ago
config: powerpc-randconfig-r036-20230305 (https://download.01.org/0day-ci/archive/20230309/202303090422.ss2Hbm4f-lkp@intel.com/config)
compiler: clang version 17.0.0 (https://github.com/llvm/llvm-project 67409911353323ca5edf2049ef0df54132fa1ca7)
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # install powerpc cross compiling tool for clang build
        # apt-get install binutils-powerpc-linux-gnu
        # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=36be5cba99f6f9984a9a9f0454f95a38f4184d3e
        git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
        git fetch --no-tags linus master
        git checkout 36be5cba99f6f9984a9a9f0454f95a38f4184d3e
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=powerpc olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=powerpc SHELL=/bin/bash

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@...el.com>
| Link: https://lore.kernel.org/oe-kbuild-all/202303090422.ss2Hbm4f-lkp@intel.com/

All errors (new ones prefixed by >>):

>> ld.lld: error: undefined symbol: memcpy
   >>> referenced by xmon.c:1896 (arch/powerpc/xmon/xmon.c:1896)
   >>>               arch/powerpc/xmon/xmon.o:(prregs) in archive vmlinux.a
   >>> referenced by zstd_compress.c:4814 (lib/zstd/compress/zstd_compress.c:4814)
   >>>               lib/zstd/compress/zstd_compress.o:(ZSTD_createCDict_advanced2) in archive vmlinux.a
   >>> referenced by zstd_compress.c:4910 (lib/zstd/compress/zstd_compress.c:4910)
   >>>               lib/zstd/compress/zstd_compress.o:(ZSTD_initStaticCDict) in archive vmlinux.a
   >>> referenced 5 more times
--
>> ld.lld: error: undefined symbol: memset
   >>> referenced by slab_common.c:579 (mm/slab_common.c:579)
   >>>               mm/slab_common.o:(kmem_dump_obj) in archive vmlinux.a
   >>> referenced by kasan_test.c:558 (mm/kasan/kasan_test.c:558)
   >>>               mm/kasan/kasan_test.o:(kmalloc_oob_in_memset) in archive vmlinux.a
   >>> referenced by kasan_test.c:505 (mm/kasan/kasan_test.c:505)
   >>>               mm/kasan/kasan_test.o:(kmalloc_oob_memset_2) in archive vmlinux.a
   >>> referenced 10 more times

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