On Sun, Jan 17, 2021 at 12:14 PM Arnaldo Carvalho de Melo <acme@xxxxxxxxxx> wrote: > > Em Fri, Jan 15, 2021 at 03:43:06PM -0800, Yonghong Song escreveu: > > > > > > On 1/15/21 3:34 PM, Nick Desaulniers wrote: > > > On Fri, Jan 15, 2021 at 3:24 PM Yonghong Song <yhs@xxxxxx> wrote: > > > > > > > > > > > > > > > > On 1/15/21 1:53 PM, Sedat Dilek wrote: > > > > > En plus, I encountered breakage with GCC v10.2.1 and LLVM=1 and > > > > > CONFIG_DEBUG_INFO_DWARF4. > > > > > So might be good to add a "depends on !DEBUG_INFO_BTF" in this combination. > > > > > > Can you privately send me your configs that repro? Maybe I can isolate > > > it to a set of configs? > > > > > > > > > > > I suggested not to add !DEBUG_INFO_BTF to CONFIG_DEBUG_INFO_DWARF4. > > > > It is not there before and adding this may suddenly break some users. > > > > > > > > If certain combination of gcc/llvm does not work for > > > > CONFIG_DEBUG_INFO_DWARF4 with pahole, this is a bug bpf community > > > > should fix. > > > > > > Is there a place I should report bugs? > > > > You can send bug report to Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>, > > dwarves@xxxxxxxxxxxxxxx and bpf@xxxxxxxxxxxxxxx. > > I'm coming back from vacation, will try to read the messages and see if > I can fix this. IDK about DWARF v4; that seems to work for me. I was previously observing https://bugzilla.redhat.com/show_bug.cgi?id=1922698 with DWARF v5. I just re-pulled the latest pahole, rebuilt, and no longer see that warning. I now observe a different set. I plan on attending "BPF office hours tomorrow morning," but if anyone wants a sneak peak of the errors and how to reproduce: https://gist.github.com/nickdesaulniers/ae8c9efbe4da69b1cf0dce138c1d2781 (FWIW: some other folks are hitting issues now with kernel's lack of DWARF v5 support: https://bugzilla.redhat.com/show_bug.cgi?id=1922707) -- Thanks, ~Nick Desaulniers
