linux-kernel - ld.lld: error: undefined symbol: __kcfi_typeid_cpu_v7_smc_switch

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Message-ID: <202409180918.AGeTRmyW-lkp@intel.com>
Date: Wed, 18 Sep 2024 09:12:41 +0800
From: kernel test robot <lkp@...el.com>
To: Linus Walleij <linus.walleij@...aro.org>
Cc: llvm@...ts.linux.dev, oe-kbuild-all@...ts.linux.dev,
	linux-kernel@...r.kernel.org,
	"Russell King (Oracle)" <rmk+kernel@...linux.org.uk>,
	Sami Tolvanen <samitolvanen@...gle.com>
Subject: ld.lld: error: undefined symbol: __kcfi_typeid_cpu_v7_smc_switch_mm

Hi Linus,

FYI, the error/warning still remains.

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   2f27fce67173bbb05d5a0ee03dae5c021202c912
commit: 1a4fec49efe5273eb2fcf575175a117745f76f97 ARM: 9392/2: Support CLANG CFI
date:   5 months ago
config: arm-randconfig-002-20240918 (https://download.01.org/0day-ci/archive/20240918/202409180918.AGeTRmyW-lkp@intel.com/config)
compiler: clang version 20.0.0git (https://github.com/llvm/llvm-project 8663a75fa2f31299ab8d1d90288d9df92aadee88)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240918/202409180918.AGeTRmyW-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/202409180918.AGeTRmyW-lkp@intel.com/

All errors (new ones prefixed by >>):

>> ld.lld: error: undefined symbol: __kcfi_typeid_cpu_v7_smc_switch_mm
   >>> referenced by proc-v7.S:94 (arch/arm/mm/proc-v7.S:94)
   >>>               arch/arm/mm/proc-v7.o:(.text+0x108) in archive vmlinux.a
--
>> ld.lld: error: undefined symbol: __kcfi_typeid_cpu_v7_hvc_switch_mm
   >>> referenced by proc-v7.S:105 (arch/arm/mm/proc-v7.S:105)
   >>>               arch/arm/mm/proc-v7.o:(.text+0x124) in archive vmlinux.a

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