linux-kernel - Re: [PATCH 2/2] string: retire bcmp()

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Message-ID: <202411251629.TKfhELVt-lkp@intel.com>
Date: Mon, 25 Nov 2024 17:02:22 +0800
From: kernel test robot <lkp@...el.com>
To: Mateusz Guzik <mjguzik@...il.com>, tglx@...utronix.de, bp@...en8.de,
	andy@...nel.org, akpm@...ux-foundation.org
Cc: llvm@...ts.linux.dev, oe-kbuild-all@...ts.linux.dev,
	linux-kernel@...r.kernel.org, x86@...nel.org,
	Mateusz Guzik <mjguzik@...il.com>
Subject: Re: [PATCH 2/2] string: retire bcmp()

Hi Mateusz,

kernel test robot noticed the following build errors:

[auto build test ERROR on kees/for-next/hardening]
[also build test ERROR on tip/master tip/x86/core linus/master v6.12 next-20241125]
[cannot apply to tip/auto-latest]
[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/Mateusz-Guzik/x86-callthunks-s-bcmp-memcmp/20241125-110959
base:   https://git.kernel.org/pub/scm/linux/kernel/git/kees/linux.git for-next/hardening
patch link:    https://lore.kernel.org/r/20241123094729.1099378-3-mjguzik%40gmail.com
patch subject: [PATCH 2/2] string: retire bcmp()
config: arm-allnoconfig (https://download.01.org/0day-ci/archive/20241125/202411251629.TKfhELVt-lkp@intel.com/config)
compiler: clang version 20.0.0git (https://github.com/llvm/llvm-project 592c0fe55f6d9a811028b5f3507be91458ab2713)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20241125/202411251629.TKfhELVt-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@...el.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202411251629.TKfhELVt-lkp@intel.com/

All errors (new ones prefixed by >>):

>> ld.lld: error: undefined symbol: bcmp
   >>> referenced by do_mounts.c
   >>>               init/do_mounts.o:(parse_root_device) in archive vmlinux.a
   >>> referenced by do_mounts.c
   >>>               init/do_mounts.o:(parse_root_device) in archive vmlinux.a
   >>> referenced by do_mounts.c
   >>>               init/do_mounts.o:(parse_root_device) in archive vmlinux.a
   >>> referenced 37 more times

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