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

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Message-ID: <202211060203.8BHrYJWZ-lkp@intel.com>
Date:   Sun, 6 Nov 2022 02:43:36 +0800
From:   kernel test robot <lkp@...el.com>
To:     Peter Zijlstra <peterz@...radead.org>
Cc:     llvm@...ts.linux.dev, oe-kbuild-all@...ts.linux.dev,
        linux-kernel@...r.kernel.org, Mark Rutland <mark.rutland@....com>
Subject: ld.lld: error: undefined symbol: __kcfi_typeid_ftrace_stub_graph

Hi Peter,

FYI, the error/warning still remains.

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   b208b9fbbcba743fb269d15cb46a4036b01936b1
commit: 883bbbffa5a4ffd1915f8b42934dab81b7f87226 ftrace,kcfi: Separate ftrace_stub() and ftrace_stub_graph()
date:   2 weeks ago
config: arm64-buildonly-randconfig-r004-20221104
compiler: clang version 16.0.0 (https://github.com/llvm/llvm-project 2bbafe04fe785a9469bea5a3737f8d7d3ce4aca2)
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # install arm64 cross compiling tool for clang build
        # apt-get install binutils-aarch64-linux-gnu
        # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=883bbbffa5a4ffd1915f8b42934dab81b7f87226
        git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
        git fetch --no-tags linus master
        git checkout 883bbbffa5a4ffd1915f8b42934dab81b7f87226
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=arm64 SHELL=/bin/bash

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

All errors (new ones prefixed by >>):

>> ld.lld: error: undefined symbol: __kcfi_typeid_ftrace_stub_graph
   >>> referenced by arch/arm64/kernel/entry-ftrace.o:(.text+0xF0) in archive vmlinux.a

-- 
0-DAY CI Kernel Test Service
https://01.org/lkp

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