Re: [linux-next:master 754/1391] /bin/bash: line 1: 50431 Segmentation fault LLVM_OBJCOPY="llvm-objcopy" pahole -J --btf_gen_floats -j --lang_exclude=rust --skip_encoding_btf_inconsistent_proto --btf_gen_optimized --btf_base vmlinux drivers/pcmcia/pcmcia_core.ko

[Arnaldo Carvalho de Melo <acme@kernel.org>]

Em Tue, Jul 11, 2023 at 03:20:43PM -0700, Andrii Nakryiko escreveu:
> On Tue, Jul 11, 2023 at 6:52 AM kernel test robot <lkp@intel.com> wrote:
> >
> > tree:   https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
> > head:   8e4b7f2f3d6071665b1dfd70786229c8a5d6c256
> > commit: c628747cc8800cf6d33d09f7f42c8b6f91e64dc7 [754/1391] libbpf: only reset sec_def handler when necessary
> > config: arm-randconfig-r032-20230710 (https://download.01.org/0day-ci/archive/20230711/202307112158.3RFyuSZJ-lkp@intel.com/config)
> > compiler: clang version 14.0.6 (https://github.com/llvm/llvm-project.git f28c006a5895fc0e329fe15fead81e37457cb1d1)
> > reproduce: (https://download.01.org/0day-ci/archive/20230711/202307112158.3RFyuSZJ-lkp@intel.com/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 <lkp@intel.com>
> > | Closes: https://lore.kernel.org/oe-kbuild-all/202307112158.3RFyuSZJ-lkp@intel.com/
> >
> > Note: the linux-next/master HEAD 8e4b7f2f3d6071665b1dfd70786229c8a5d6c256 builds fine.
> >       It may have been fixed somewhere.
> >
> > All errors (new ones prefixed by >>):
> >
> >    die__process_unit: DW_TAG_subrange_type (0x21) @ <0x14a5b> not handled!
> >    die__process_unit: tag not supported 0x21 (subrange_type)!
> >    die__process_unit: DW_TAG_subrange_type (0x21) @ <0x1e457> not handled!
> >    die__create_new_array: DW_TAG_union_type (0x17) @ <0x14a70> not handled!
> >    die__process_class: DW_TAG_compile_unit (0x11) @ <0x1e4bc> not handled!
> >    die__process_class: tag not supported 0x11 (compile_unit)!
> > >> /bin/bash: line 1: 50431 Segmentation fault      LLVM_OBJCOPY="llvm-objcopy" pahole -J --btf_gen_floats -j --lang_exclude=rust --skip_encoding_btf_inconsistent_proto --btf_gen_optimized --btf_base vmlinux drivers/pcmcia/pcmcia_core.ko
> >
> 
> Cc'ing Arnaldo and Eduard. I don't know if it's the same as [0], but
> just in case please take a look.
> 
>   [0] https://lore.kernel.org/bpf/20230710200002.ca4okot5rrvewqvb@altlinux.org/

I'll try to reproduce, but if the vmlinux and pcmcia_core.ko files that
were produced in this test run could be made available, that would speed
up things.

Otherwise I'll try to use https://download.01.org/0day-ci/archive/20230711/202307112158.3RFyuSZJ-lkp@intel.com/reproduce

Thise are not types that usually appear in C, so perhaps the
--lang_exclude=rust isn't working for some reason, i.e. looking at the
DW_TAG_compile_unit to se the DW_AT_language.

Processing arrays and getting a union type? Interesting :-)

- Arnaldo