[linux-next:master 8545/12022] ld.lld: error: arch/powerpc/built-in.a(kernel/exceptions-64e.o):(.text+0x2576): unknown relocation (110) against symbol interrupt_base_book3e

[kernel test robot]

CC: Linux Memory Management List <linu...@kvack.org>
TO: Nicholas Piggin <npi...@gmail.com>
CC: Michael Ellerman <m...@ellerman.id.au>

Hi Nicholas,

First bad commit (maybe != root cause):

tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
head: 37dfbfbdca66834bc0f64ec9b35e09ac6c8898da
commit: 755d664174463791489dddf34c33308b61de68c3 [8545/12022] powerpc: DebugException remove args
config: powerpc-randconfig-r026-20210222 (attached as .config)
compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project c9439ca36342fb6013187d0a69aef92736951476)
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 powerpc cross compiling tool for clang build
# apt-get install binutils-powerpc-linux-gnu
# https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=755d664174463791489dddf34c33308b61de68c3
git remote add linux-next https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git
git fetch --no-tags linux-next master
git checkout 755d664174463791489dddf34c33308b61de68c3
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=powerpc

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

All errors (new ones prefixed by >>):

ld.lld: error: arch/powerpc/built-in.a(kernel/exceptions-64e.o):(.text+0x23EE): unknown relocation (110) against symbol interrupt_base_book3e
ld.lld: error: arch/powerpc/built-in.a(kernel/exceptions-64e.o):(.text+0x2406): unknown relocation (110) against symbol __end_interrupts
>> ld.lld: error: arch/powerpc/built-in.a(kernel/exceptions-64e.o):(.text+0x2576): unknown relocation (110) against symbol interrupt_base_book3e
>> ld.lld: error: arch/powerpc/built-in.a(kernel/exceptions-64e.o):(.text+0x258E): unknown relocation (110) against symbol __end_interrupts
ld.lld: error: arch/powerpc/built-in.a(kernel/exceptions-64e.o):(.text+0x37F2): unknown relocation (110) against symbol
ld.lld: error: undefined symbol: .early_setup
>>> referenced by arch/powerpc/kernel/head_64.o:(.ref.text+0x5A)
>>> did you mean: early_setup
>>> defined in: arch/powerpc/built-in.a(kernel/setup_64.o)

Kconfig warnings: (for reference only)
WARNING: unmet direct dependencies detected for HOTPLUG_CPU
Depends on SMP && (PPC_PSERIES || PPC_PMAC || PPC_POWERNV || FSL_SOC_BOOKE
Selected by
- PM_SLEEP_SMP && SMP && (ARCH_SUSPEND_POSSIBLE || ARCH_HIBERNATION_POSSIBLE && PM_SLEEP

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

[Fangrui Song]

110 is R_PPC64_ADDR16_HIGH.
This is https://github.com/ClangBuiltLinux/linux/issues/1260

A newer LLD 12.0.0 (llvmorg-12-init-17087-g5fcb412ed083) supports R_PPC64_ADDR16_HIGH.
llvmorg-12-init-17023-gc9439ca36342 used by the bot does not have R_PPC64_ADDR16_HIGH support.

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

>--
>You received this message because you are subscribed to the Google Groups "Clang Built Linux" group.
>To unsubscribe from this group and stop receiving emails from it, send an email to clang-built-li...@googlegroups.com.
>To view this discussion on the web visit https://groups.google.com/d/msgid/clang-built-linux/202102222003.q8ZqV9Xy-lkp%40intel.com.

[Nick Desaulniers]

Thanks Fangrui for verifying. Philip, clang-12 is not yet released
and is still landing fixes. Can the version used by 0day bot be
upgraded? Top of Tree LLVM will be clang-13, so both branches are
actively landing patches. When clang-12 is officially released, there
will be a point release 6 months later, clang-13 will branch, and
clang-14 will eventually ship as what's ToT.

>
> >---
> >0-DAY CI Kernel Test Service, Intel Corporation
> >https://lists.01.org/hyperkitty/list/kbuil...@lists.01.org
> >
> >--
> >You received this message because you are subscribed to the Google Groups "Clang Built Linux" group.
> >To unsubscribe from this group and stop receiving emails from it, send an email to clang-built-li...@googlegroups.com.
> >To view this discussion on the web visit https://groups.google.com/d/msgid/clang-built-linux/202102222003.q8ZqV9Xy-lkp%40intel.com.
>
>
> --
> You received this message because you are subscribed to the Google Groups "Clang Built Linux" group.
> To unsubscribe from this group and stop receiving emails from it, send an email to clang-built-li...@googlegroups.com.

> To view this discussion on the web visit https://groups.google.com/d/msgid/clang-built-linux/20210223215104.etyo2intapqy2t4n%40google.com.



--
Thanks,
~Nick Desaulniers

[Philip Li]

got it, we will upgrade the clang compiler asap.