arch/x86/kernel/cpu/bugs.c:776:12: sparse: sparse: symbol 'retbleed_strings' was not declared. Should it be static?

[kernel test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   db886979683a8360ced9b24ab1125ad0c4d2cf76
commit: 7fbf47c7ce50b38a64576b150e7011ae73d54669 x86/bugs: Add AMD retbleed= boot parameter
date:   3 weeks ago
config: x86_64-randconfig-s022 (https://download.01.org/0day-ci/archive/20220715/202207150647.oLujDthN-lkp@xxxxxxxxx/config)
compiler: gcc-11 (Debian 11.3.0-3) 11.3.0
reproduce:
        # apt-get install sparse
        # sparse version: v0.6.4-39-gce1a6720-dirty
        # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=7fbf47c7ce50b38a64576b150e7011ae73d54669
        git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
        git fetch --no-tags linus master
        git checkout 7fbf47c7ce50b38a64576b150e7011ae73d54669
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=x86_64 SHELL=/bin/bash arch/x86/kernel/cpu/

If you fix the issue, kindly add following tag where applicable
Reported-by: kernel test robot <lkp@xxxxxxxxx>


sparse warnings: (new ones prefixed by >>)
>> arch/x86/kernel/cpu/bugs.c:776:12: sparse: sparse: symbol 'retbleed_strings' was not declared. Should it be static?

vim +/retbleed_strings +776 arch/x86/kernel/cpu/bugs.c

   774	
   775	static enum spectre_v2_mitigation spectre_v2_enabled __ro_after_init =
 > 776		SPECTRE_V2_NONE;
   777	

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