linux-kernel - [nsaenz-rpi:ct-work-defer-wip 23/25] alternative.c:undefined reference to `context_tracking_set_cpu

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Date:   Sat, 14 May 2022 14:17:56 +0800
From:   kernel test robot <lkp@...el.com>
To:     Nicolas Saenz Julienne <nsaenzju@...hat.com>
Cc:     kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org,
        "Peter Zijlstra (Intel)" <peterz@...radead.org>
Subject: [nsaenz-rpi:ct-work-defer-wip 23/25] alternative.c:undefined
 reference to `context_tracking_set_cpu_work'

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/nsaenz/linux-rpi.git ct-work-defer-wip
head:   ed63029652239a6befad96dd473b16332913f889
commit: d79e9aa1c1e3f664fff9d4e83500d7884777cad9 [23/25] context_tracking,x86: Fix text_poke_sync() vs NOHZ_FULL
config: x86_64-randconfig-a013 (https://download.01.org/0day-ci/archive/20220514/202205141428.JPESIxLb-lkp@intel.com/config)
compiler: gcc-11 (Debian 11.2.0-20) 11.2.0
reproduce (this is a W=1 build):
        # https://git.kernel.org/pub/scm/linux/kernel/git/nsaenz/linux-rpi.git/commit/?id=d79e9aa1c1e3f664fff9d4e83500d7884777cad9
        git remote add nsaenz-rpi https://git.kernel.org/pub/scm/linux/kernel/git/nsaenz/linux-rpi.git
        git fetch --no-tags nsaenz-rpi ct-work-defer-wip
        git checkout d79e9aa1c1e3f664fff9d4e83500d7884777cad9
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        make 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 >>):

   vmlinux.o: warning: objtool: enter_from_user_mode+0x18: call to __kcsan_check_access() leaves .noinstr.text section
   vmlinux.o: warning: objtool: syscall_enter_from_user_mode+0x1d: call to __kcsan_check_access() leaves .noinstr.text section
   vmlinux.o: warning: objtool: syscall_enter_from_user_mode_prepare+0x18: call to __kcsan_check_access() leaves .noinstr.text section
   vmlinux.o: warning: objtool: irqentry_enter_from_user_mode+0x18: call to __kcsan_check_access() leaves .noinstr.text section
   ld: arch/x86/kernel/alternative.o: in function `do_sync_core_cond':
>> alternative.c:(.text+0x68e): undefined reference to `context_tracking_set_cpu_work'

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