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Subject[mingo-tip:sched/headers 571/2382] elf.c:496:18: error: no member named 'len' in 'struct section'
tree:   git://git.kernel.org/pub/scm/linux/kernel/git/mingo/tip.git sched/headers
head: 1a880941a087613ed42f77001229edfcf75ea8a5
commit: 4e8fb52df12408e936d71ebf34aaa990fd61e736 [571/2382] objtool/kallsyms: Copy the symbol name and offset to the new __kallsyms ELF section
config: x86_64-randconfig-a015-20220109 (https://download.01.org/0day-ci/archive/20220113/202201131950.VXD05up8-lkp@intel.com/config)
compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project d1021978b8e7e35dcc30201ca1731d64b5a602a8)
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
# https://git.kernel.org/pub/scm/linux/kernel/git/mingo/tip.git/commit/?id=4e8fb52df12408e936d71ebf34aaa990fd61e736
git remote add mingo-tip git://git.kernel.org/pub/scm/linux/kernel/git/mingo/tip.git
git fetch --no-tags mingo-tip sched/headers
git checkout 4e8fb52df12408e936d71ebf34aaa990fd61e736
# save the config file to linux build tree
mkdir build_dir
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=x86_64 prepare

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

Note: the mingo-tip/sched/headers HEAD 1a880941a087613ed42f77001229edfcf75ea8a5 builds fine.
It only hurts bisectability.

All errors (new ones prefixed by >>):

>> elf.c:496:18: error: no member named 'len' in 'struct section'
sec_kallsyms->len += data->d_size;
~~~~~~~~~~~~ ^
1 error generated.
make[4]: *** [tools/build/Makefile.build:96: tools/objtool/elf.o] Error 1
make[4]: *** Waiting for unfinished jobs....
make[3]: *** [Makefile:56: tools/objtool/objtool-in.o] Error 2
make[2]: *** [Makefile:69: objtool] Error 2
make[1]: *** [Makefile:1349: tools/objtool] Error 2
In file included from arch/x86/kernel/asm-offsets.c:34:
arch/x86/kernel/../../../kernel/sched/per_task_area_struct_defs.h:13:13: warning: no previous prototype for function 'per_task_common' [-Wmissing-prototypes]
void __used per_task_common(void)
^
arch/x86/kernel/../../../kernel/sched/per_task_area_struct_defs.h:13:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
void __used per_task_common(void)
^
static
1 warning generated.
make[1]: Target 'prepare' not remade because of errors.
make: *** [Makefile:219: __sub-make] Error 2
make: Target 'prepare' not remade because of errors.

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

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