ld.lld: error: relocation R_RISCV_HI20 cannot be used against symbol '.L.str.6'; recompile with -fPIC

[kernel test robot]

Hi Sami,

FYI, the error/warning was bisected to this commit, please ignore it if it's irrelevant.

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   aed8aee11130a954356200afa3f1b8753e8a9482
commit: 74f8fc31feb4b756814ec0720f48ccdc1175f774 riscv: Allow CONFIG_CFI_CLANG to be selected
date:   3 weeks ago
config: riscv-randconfig-r002-20230912 (https://download.01.org/0day-ci/archive/20230914/202309141433.6gzJPSYA-lkp@xxxxxxxxx/config)
compiler: clang version 17.0.0 (https://github.com/llvm/llvm-project.git 4a5ac14ee968ff0ad5d2cc1ffa0299048db4c88a)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20230914/202309141433.6gzJPSYA-lkp@xxxxxxxxx/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@xxxxxxxxx>
| Closes: https://lore.kernel.org/oe-kbuild-all/202309141433.6gzJPSYA-lkp@xxxxxxxxx/

All errors (new ones prefixed by >>):

>> ld.lld: error: relocation R_RISCV_HI20 cannot be used against symbol '.L.str.6'; recompile with -fPIC
   >>> defined in vmlinux.a(arch/riscv/errata/sifive/errata.o)
   >>> referenced by errata.c:94 (arch/riscv/errata/sifive/errata.c:94)
   >>>               arch/riscv/errata/sifive/errata.o:(sifive_errata_patch_func) in archive vmlinux.a
--
>> ld.lld: error: relocation R_RISCV_LO12_I cannot be used against symbol '.L.str.6'; recompile with -fPIC
   >>> defined in vmlinux.a(arch/riscv/errata/sifive/errata.o)
   >>> referenced by errata.c:94 (arch/riscv/errata/sifive/errata.c:94)
   >>>               arch/riscv/errata/sifive/errata.o:(sifive_errata_patch_func) in archive vmlinux.a

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