2023-06-06 09:03:59

by kernel test robot

[permalink] [raw]
Subject: error: A dwo section may not contain relocations

tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: f8dba31b0a826e691949cd4fdfa5c30defaac8c5
commit: 61f2b7c7497ba96cdde5bbaeb9e07f4c48f41f97 Makefile.debug: set -g unconditional on CONFIG_DEBUG_INFO_SPLIT
date: 9 months ago
config: riscv-randconfig-r026-20230606 (https://download.01.org/0day-ci/archive/20230606/[email protected]/config)
compiler: clang version 14.0.6 (https://github.com/llvm/llvm-project.git f28c006a5895fc0e329fe15fead81e37457cb1d1)
reproduce (this is a W=1 build):
mkdir -p ~/bin
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# install riscv cross compiling tool for clang build
# apt-get install binutils-riscv64-linux-gnu
# https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=61f2b7c7497ba96cdde5bbaeb9e07f4c48f41f97
git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
git fetch --no-tags linus master
git checkout 61f2b7c7497ba96cdde5bbaeb9e07f4c48f41f97
# save the config file
mkdir build_dir && cp config build_dir/.config
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang ~/bin/make.cross W=1 O=build_dir ARCH=riscv olddefconfig
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang ~/bin/make.cross W=1 O=build_dir ARCH=riscv prepare

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <[email protected]>
| Closes: https://lore.kernel.org/oe-kbuild-all/[email protected]/

All errors (new ones prefixed by >>):

>> error: A dwo section may not contain relocations
>> error: A dwo section may not contain relocations
>> error: A dwo section may not contain relocations
>> error: A dwo section may not contain relocations
>> error: A dwo section may not contain relocations
>> error: A dwo section may not contain relocations
>> error: A dwo section may not contain relocations
>> error: A dwo section may not contain relocations
>> error: A dwo section may not contain relocations
>> error: A dwo section may not contain relocations
>> error: A dwo section may not contain relocations
>> error: A dwo section may not contain relocations
>> error: A dwo section may not contain relocations
>> error: A dwo section may not contain relocations
>> error: A dwo section may not contain relocations
>> error: A dwo section may not contain relocations
>> error: A dwo section may not contain relocations
>> error: A dwo section may not contain relocations
>> error: A dwo section may not contain relocations
fatal error: too many errors emitted, stopping now [-ferror-limit=]
20 errors generated.
make[2]: *** [scripts/Makefile.build:249: arch/riscv/kernel/vdso/vgettimeofday.o] Error 1 shuffle=3768112586
make[2]: Target 'include/generated/vdso-offsets.h' not remade because of errors.
make[1]: *** [arch/riscv/Makefile:128: vdso_prepare] Error 2 shuffle=3768112586
make[1]: Target 'prepare' not remade because of errors.
make: *** [Makefile:222: __sub-make] Error 2 shuffle=3768112586
make: Target 'prepare' not remade because of errors.

--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki


2023-08-08 20:44:08

by Nick Desaulniers

[permalink] [raw]
Subject: Re: error: A dwo section may not contain relocations

On Tue, Aug 8, 2023 at 12:02 PM kernel test robot <[email protected]> wrote:
>
> tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
> head: 02aee814d37c563e24b73bcd0f9cb608fbd403d4
> commit: f9b3cd24578401e7a392974b3353277286e49cee Kconfig.debug: make DEBUG_INFO selectable from a choice
> date: 1 year, 5 months ago
> config: riscv-randconfig-r001-20230808 (https://download.01.org/0day-ci/archive/20230809/[email protected]/config)
> compiler: clang version 14.0.6 (https://github.com/llvm/llvm-project.git f28c006a5895fc0e329fe15fead81e37457cb1d1)

FWIW, I wasn't able to reproduce with the provided config and
clang-17. Perhaps this is a bug for older clang releases (the bot
tested with clang-14).

> reproduce: (https://download.01.org/0day-ci/archive/20230809/[email protected]/reproduce)
>
> If you fix the issue in a separate patch/commit (i.e. not just a new version of
> the same patch/commit), kindly add following tags
> | Reported-by: kernel test robot <[email protected]>
> | Closes: https://lore.kernel.org/oe-kbuild-all/[email protected]/
>
> All errors (new ones prefixed by >>):
>
> >> error: A dwo section may not contain relocations
> >> error: A dwo section may not contain relocations
> >> error: A dwo section may not contain relocations
> >> error: A dwo section may not contain relocations
> >> error: A dwo section may not contain relocations
> >> error: A dwo section may not contain relocations
> >> error: A dwo section may not contain relocations
> >> error: A dwo section may not contain relocations
> >> error: A dwo section may not contain relocations
> >> error: A dwo section may not contain relocations
> >> error: A dwo section may not contain relocations
> >> error: A dwo section may not contain relocations
> >> error: A dwo section may not contain relocations
> >> error: A dwo section may not contain relocations
> >> error: A dwo section may not contain relocations
> >> error: A dwo section may not contain relocations
> >> error: A dwo section may not contain relocations
> >> error: A dwo section may not contain relocations
> >> error: A dwo section may not contain relocations
> fatal error: too many errors emitted, stopping now [-ferror-limit=]
> 20 errors generated.
> make[2]: *** [scripts/Makefile.build:288: arch/riscv/kernel/vdso/vgettimeofday.o] Error 1 shuffle=3686795728
> make[2]: Target 'include/generated/vdso-offsets.h' not remade because of errors.
> make[1]: *** [arch/riscv/Makefile:120: vdso_prepare] Error 2 shuffle=3686795728
> make[1]: Target 'prepare' not remade because of errors.
> make: *** [Makefile:219: __sub-make] Error 2 shuffle=3686795728
> make: Target 'prepare' not remade because of errors.
>
> --
> 0-DAY CI Kernel Test Service
> https://github.com/intel/lkp-tests/wiki



--
Thanks,
~Nick Desaulniers

2023-08-10 09:16:17

by Yujie Liu

[permalink] [raw]
Subject: Re: error: A dwo section may not contain relocations

Hi Nick,

On Tue, Aug 08, 2023 at 12:46:00PM -0700, Nick Desaulniers wrote:
> On Tue, Aug 8, 2023 at 12:02 PM kernel test robot <[email protected]> wrote:
> >
> > tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
> > head: 02aee814d37c563e24b73bcd0f9cb608fbd403d4
> > commit: f9b3cd24578401e7a392974b3353277286e49cee Kconfig.debug: make DEBUG_INFO selectable from a choice
> > date: 1 year, 5 months ago
> > config: riscv-randconfig-r001-20230808 (https://download.01.org/0day-ci/archive/20230809/[email protected]/config)
> > compiler: clang version 14.0.6 (https://github.com/llvm/llvm-project.git f28c006a5895fc0e329fe15fead81e37457cb1d1)
>
> FWIW, I wasn't able to reproduce with the provided config and
> clang-17. Perhaps this is a bug for older clang releases (the bot
> tested with clang-14).

Thanks for this info. We re-tested with various versions of clang.
clang-14 throws this error, while clang-15/16/17 have no problem in this
case. We will consider adjusting our compiler coverage and remove the old
clang-14.

Best Regards,
Yujie

> > reproduce: (https://download.01.org/0day-ci/archive/20230809/[email protected]/reproduce)
> >
> > If you fix the issue in a separate patch/commit (i.e. not just a new version of
> > the same patch/commit), kindly add following tags
> > | Reported-by: kernel test robot <[email protected]>
> > | Closes: https://lore.kernel.org/oe-kbuild-all/[email protected]/
> >
> > All errors (new ones prefixed by >>):
> >
> > >> error: A dwo section may not contain relocations
> > >> error: A dwo section may not contain relocations
> > >> error: A dwo section may not contain relocations
> > >> error: A dwo section may not contain relocations
> > >> error: A dwo section may not contain relocations
> > >> error: A dwo section may not contain relocations
> > >> error: A dwo section may not contain relocations
> > >> error: A dwo section may not contain relocations
> > >> error: A dwo section may not contain relocations
> > >> error: A dwo section may not contain relocations
> > >> error: A dwo section may not contain relocations
> > >> error: A dwo section may not contain relocations
> > >> error: A dwo section may not contain relocations
> > >> error: A dwo section may not contain relocations
> > >> error: A dwo section may not contain relocations
> > >> error: A dwo section may not contain relocations
> > >> error: A dwo section may not contain relocations
> > >> error: A dwo section may not contain relocations
> > >> error: A dwo section may not contain relocations
> > fatal error: too many errors emitted, stopping now [-ferror-limit=]
> > 20 errors generated.
> > make[2]: *** [scripts/Makefile.build:288: arch/riscv/kernel/vdso/vgettimeofday.o] Error 1 shuffle=3686795728
> > make[2]: Target 'include/generated/vdso-offsets.h' not remade because of errors.
> > make[1]: *** [arch/riscv/Makefile:120: vdso_prepare] Error 2 shuffle=3686795728
> > make[1]: Target 'prepare' not remade because of errors.
> > make: *** [Makefile:219: __sub-make] Error 2 shuffle=3686795728
> > make: Target 'prepare' not remade because of errors.
> >
> > --
> > 0-DAY CI Kernel Test Service
> > https://github.com/intel/lkp-tests/wiki
>
>
>
> --
> Thanks,
> ~Nick Desaulniers
>