On Thu, Jan 14, 2021 at 11:13 AM Yonghong Song <yhs@xxxxxx> wrote: > > > > On 1/14/21 11:01 AM, Nick Desaulniers wrote: > > On Thu, Jan 14, 2021 at 10:53 AM Nick Desaulniers > > <ndesaulniers@xxxxxxxxxx> wrote: > >> > >> On Wed, Jan 13, 2021 at 10:18 PM Sedat Dilek <sedat.dilek@xxxxxxxxx> wrote: > >>> > >>> On Wed, Jan 13, 2021 at 11:25 PM Caroline Tice <cmtice@xxxxxxxxxx> wrote: > >>>> > >>>> On Tue, Jan 12, 2021 at 3:17 PM Sedat Dilek <sedat.dilek@xxxxxxxxx> wrote: > >>>>> > >>>>> Unfortunately, I see with CONFIG_DEBUG_INFO_DWARF5=y and > >>>>> CONFIG_DEBUG_INFO_BTF=y: > >>>>> > >>>>> die__process_inline_expansion: DW_TAG_INVALID (0x48) @ <0x3f0dd5a> not handled! > >>>>> die__process_function: DW_TAG_INVALID (0x48) @ <0x3f0dd69> not handled! > >> > >> I can confirm that I see a stream of these warnings when building with > >> this patch series applied, and those two configs enabled. > >> > >> rebuilding with `make ... V=1`, it looks like the call to: > >> > >> + pahole -J .tmp_vmlinux.btf > >> > >> is triggering these. > >> > >> Shall I send a v4 that adds a Kconfig dependency on !DEBUG_INFO_BTF? > >> Does pahole have a bug tracker? > > pahole could have issues for dwarf5 since as far as I know, people just > use dwarf2/dwarf4 with config functions in the kernel. > > Where is the link of the patch to add CONFIG_DEBUG_INFO_DWARF5 to linux? Latest is v4: https://lore.kernel.org/lkml/20210113003235.716547-1-ndesaulniers@xxxxxxxxxx/ > I think you can add CONFIG_DEBUG_INFO_DWARF5 to kernel with dependency > of !CONFIG_DEBUG_INFO_BTF. At the same time, people can debug pahole > issues. Once it is resolved, !CONFIG_DEBUG_INFO_BTF dependency can be > removed with proper pahole version change in kernel. SGTM, will send a v5 tomorrow in case there's more feedback. > > > > > FWIW, my distro packages pahole v1.17; rebuilt with ToT v1.19 from > > source and also observe the issue. > > -- Thanks, ~Nick Desaulniers
