Messages in this thread | | | Date | Fri, 2 Sep 2022 08:44:13 -0700 | From | Josh Poimboeuf <> | Subject | Re: [jpoimboe:s390 2/2] Unsupported relocation type: 26 |
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On Fri, Sep 02, 2022 at 08:12:30AM -0700, Nathan Chancellor wrote: > On Fri, Sep 02, 2022 at 01:51:11PM +0800, kernel test robot wrote: > > tree: https://git.kernel.org/pub/scm/linux/kernel/git/jpoimboe/linux.git s390 > > head: fa09ffb73e4d64424faef5988a1e993317db77c5 > > commit: fa09ffb73e4d64424faef5988a1e993317db77c5 [2/2] s390: Compile relocatable kernel without -fPIE > > config: s390-randconfig-r044-20220901 > > compiler: clang version 16.0.0 (https://github.com/llvm/llvm-project c55b41d5199d2394dd6cdb8f52180d8b81d809d4) > > 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 s390 cross compiling tool for clang build > > # apt-get install binutils-s390x-linux-gnu > > # https://git.kernel.org/pub/scm/linux/kernel/git/jpoimboe/linux.git/commit/?id=fa09ffb73e4d64424faef5988a1e993317db77c5 > > git remote add jpoimboe https://git.kernel.org/pub/scm/linux/kernel/git/jpoimboe/linux.git > > git fetch --no-tags jpoimboe s390 > > git checkout fa09ffb73e4d64424faef5988a1e993317db77c5 > > # save the config file > > mkdir build_dir && cp config build_dir/.config > > COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=s390 SHELL=/bin/bash > > > > If you fix the issue, kindly add following tag where applicable > > Reported-by: kernel test robot <lkp@intel.com> > > > > All errors (new ones prefixed by >>): > > > > >> Unsupported relocation type: 26 > > Looks like 26 is R_390_GOTENT according to > https://github.com/llvm/llvm-project/blob/ee761374f797a47919ec8f9f49f9b8b1b20573e8/llvm/include/llvm/BinaryFormat/ELFRelocs/SystemZ.def.
Indeed. BTW, that define can also be found in /usr/include/elf.h.
I guess I need to test this feature with clang ;-) Without -fPIE, I'm not sure why it would be using a GOT relocation for vmlinux.
-- Josh
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