linux-kernel - [luto:sched/lazymm 11/16] ld.lld: error: undefined symbol: unlazy_mm_irqs

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Date:   Tue, 23 Nov 2021 07:59:45 +0800
From:   kernel test robot <lkp@...el.com>
To:     Andy Lutomirski <luto@...nel.org>
Cc:     llvm@...ts.linux.dev, kbuild-all@...ts.01.org,
        linux-kernel@...r.kernel.org
Subject: [luto:sched/lazymm 11/16] ld.lld: error: undefined symbol:
 unlazy_mm_irqs_off

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/luto/linux.git sched/lazymm
head:   c0d03d4f2778fd0a7c16e69cdfb3f111296129b5
commit: 23ef8314367945e2dd63230fb1c2ebb7e148fe48 [11/16] Rework "sched/core: Fix illegal RCU from offline CPUs"
config: x86_64-randconfig-a002-20211116 (attached as .config)
compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project 4c2cf3a314d9131b1b288e7c8ab0c75ac1b2be1d)
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/luto/linux.git/commit/?id=23ef8314367945e2dd63230fb1c2ebb7e148fe48
        git remote add luto https://git.kernel.org/pub/scm/linux/kernel/git/luto/linux.git
        git fetch --no-tags luto sched/lazymm
        git checkout 23ef8314367945e2dd63230fb1c2ebb7e148fe48
        # save the attached .config to linux build tree
        mkdir build_dir
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash

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

All errors (new ones prefixed by >>):

>> ld.lld: error: undefined symbol: unlazy_mm_irqs_off
   >>> referenced by idle.c:288 (kernel/sched/idle.c:288)
   >>>               sched/idle.o:(do_idle) in archive kernel/built-in.a

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org

Download attachment ".config.gz" of type "application/gzip" (37669 bytes)