linux-kernel - [peterz-queue:x86/fineibt 3/4] ld.lld: error: undefined symbol: ftrace_stub

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Date:   Sat, 30 Jul 2022 10:01:43 +0800
From:   kernel test robot <lkp@...el.com>
To:     Peter Zijlstra <peterz@...radead.org>
Cc:     llvm@...ts.linux.dev, kbuild-all@...ts.01.org,
        linux-kernel@...r.kernel.org
Subject: [peterz-queue:x86/fineibt 3/4] ld.lld: error: undefined symbol:
 ftrace_stub_graph

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/peterz/queue.git x86/fineibt
head:   365543b24a9e31c0c89457717391cdb819cc5501
commit: 311ed6d0d57a551f834efd610dc8b14867012a68 [3/4] ftrace,kcfi: Separate ftrace_stub() and ftrace_stub_graph()
config: i386-randconfig-a013 (https://download.01.org/0day-ci/archive/20220730/202207300957.x0WDB02K-lkp@intel.com/config)
compiler: clang version 16.0.0 (https://github.com/llvm/llvm-project 52cd00cabf479aa7eb6dbb063b7ba41ea57bce9e)
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
        # https://git.kernel.org/pub/scm/linux/kernel/git/peterz/queue.git/commit/?id=311ed6d0d57a551f834efd610dc8b14867012a68
        git remote add peterz-queue https://git.kernel.org/pub/scm/linux/kernel/git/peterz/queue.git
        git fetch --no-tags peterz-queue x86/fineibt
        git checkout 311ed6d0d57a551f834efd610dc8b14867012a68
        # 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=i386 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: ftrace_stub_graph
   >>> referenced by fgraph.c
   >>>               trace/fgraph.o:(unregister_ftrace_graph) in archive kernel/built-in.a
   >>> referenced by fgraph.c
   >>>               trace/fgraph.o:(ftrace_graph_return) in archive kernel/built-in.a

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