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Subjectundefined reference to `__trace_hardirqs_off'
Hi Mike,

It's probably a bug fix that unveils the link errors.

tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: ac309e7744bee222df6de0122facaf2d9706fa70
commit: 060dc911501f6ee222569304f50962172a52b1d6 nds32: fix build failure caused by page table folding updates
date: 3 months ago
config: nds32-randconfig-a001-20200318 (attached as .config)
compiler: nds32le-linux-gcc (GCC) 9.2.0
reproduce:
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
git checkout 060dc911501f6ee222569304f50962172a52b1d6
# save the attached .config to linux build tree
GCC_VERSION=9.2.0 make.cross ARCH=nds32

If you fix the issue, kindly add following tag
Reported-by: kbuild test robot <lkp@intel.com>

All errors (new ones prefixed by >>):

nds32le-linux-ld: arch/nds32/kernel/ex-entry.o: in function `common_exception_handler':
>> (.text+0xfe): undefined reference to `__trace_hardirqs_off'
(.text+0xfe): relocation truncated to fit: R_NDS32_25_PCREL_RELA against undefined symbol `__trace_hardirqs_off'
nds32le-linux-ld: arch/nds32/kernel/ex-exit.o: in function `no_work_pending':
(.text+0xce): undefined reference to `__trace_hardirqs_off'
>> nds32le-linux-ld: (.text+0xd2): undefined reference to `__trace_hardirqs_off'
>> nds32le-linux-ld: (.text+0xd6): undefined reference to `__trace_hardirqs_on'
nds32le-linux-ld: (.text+0xda): undefined reference to `__trace_hardirqs_on'

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