Re: [PATCH 1/2] lib/string: Improve strstarts() performance

[kernel test robot]

Hi Zijun,

kernel test robot noticed the following build errors:

[auto build test ERROR on 0af2f6be1b4281385b618cb86ad946eded089ac8]

url:    https://github.com/intel-lab-lkp/linux/commits/Zijun-Hu/lib-string-Improve-strstarts-performance/20250407-212519
base:   0af2f6be1b4281385b618cb86ad946eded089ac8
patch link:    https://lore.kernel.org/r/20250407-imp_str_perf-v1-1-ed95d52964a4%40quicinc.com
patch subject: [PATCH 1/2] lib/string: Improve strstarts() performance
config: riscv-randconfig-002-20250408 (https://download.01.org/0day-ci/archive/20250408/202504082037.VtV65Bnb-lkp@xxxxxxxxx/config)
compiler: clang version 21.0.0git (https://github.com/llvm/llvm-project 92c93f5286b9ff33f27ff694d2dc33da1c07afdd)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250408/202504082037.VtV65Bnb-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/202504082037.VtV65Bnb-lkp@xxxxxxxxx/

All errors (new ones prefixed by >>):

>> ld.lld: error: undefined hidden symbol: __efistub_strstarts
   >>> referenced by gop.c:119 (drivers/firmware/efi/libstub/gop.c:119)
   >>>               gop.stub.o:(__efistub_efi_parse_option_graphics) in archive ./drivers/firmware/efi/libstub/lib.a
   >>> referenced by gop.c:42 (drivers/firmware/efi/libstub/gop.c:42)
   >>>               gop.stub.o:(__efistub_efi_parse_option_graphics) in archive ./drivers/firmware/efi/libstub/lib.a
   >>> referenced by gop.c:42 (drivers/firmware/efi/libstub/gop.c:42)
   >>>               gop.stub.o:(__efistub_efi_parse_option_graphics) in archive ./drivers/firmware/efi/libstub/lib.a
   >>> referenced 3 more times

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