Re: kernelci failures due to "pahole" missing

["Denys Fedoryshchenko" <denys.f@collabora.com>]

At the moment I have identified a problem with more packages that are
missing, now it is python, and i'm adding it as well, but need to test
everything manually, and then on staging.

Here is example of build that needs python:
https://linux.kernelci.org/build/id/6271d9f8c49e05f410dc7b53/
https://storage.kernelci.org/android/android13-5.10/ASB-2022-04-05_13-5.10-206-g4dce9d7a65b1/arm64/gki_defconfig/clang-14/logs/kernel.log

Also, another problem some of the builders crashed, probably due to OOM
or insufficient resources. 
https://linux.kernelci.org/build/id/6271db3a3c249a41a7dc7b48/
https://storage.kernelci.org/android/android13-5.15/ASB-2022-04-05_13-5.15-1526-g22e9215f1bea/arm64/gki_defconfig/clang-14/logs/kernel.log

On manual tests, builds with pahole create about 819Mbyte of warnings,
such as:
"namespace__recode_dwarf_types: couldn't find 0x13423 type for 0x3d6a5
(member)!"
I am currently investigating whether these issues are related. 
Therefore, it takes a bit more time than i expected, than just adding a
pahole/dwarves package.

I will update as soon as more information available.

On Tue, 2022-05-03 at 07:45 -0700, Todd Kjos wrote:
> Denys, Thanks for the update. Do you have a prediction for when it
> will land?
> 
> On Mon, May 2, 2022 at 9:58 PM Denys Fedoryshchenko
> <denys.f@collabora.com> wrote:
> > Hi, 
> > 
> > We are testing in staging fix for that:
> > https://github.com/kernelci/kernelci-core/pull/1158
> > 
> > Also i noticed in some cases lz4 package required for this test,
> > so added it too.
> > 
> > Best regards,
> > Denys
> > 
> > On Fri, 2022-04-29 at 15:22 -0700, Todd Kjos via groups.io wrote:
> > > We have a bunch of Android kernel test failures due to missing
> > > "pahole" in
> > > the build environment (example android13-5.15 gki_defconfig
> > > 
> > <https://storage.kernelci.org/android/android13-5.15/ASB-2022-04-05_13-5.15-1515-g7a68c2c45139/arm64/gki_defconfig/gcc-10/logs/kernel.log
> > > > 
> > > ):
> > > 
> > > 
> > >   LD      vmlinux.o
> > >   MODPOST vmlinux.symvers
> > >   MODINFO modules.builtin.modinfo
> > >   GEN     modules.builtin
> > > BTF: .tmp_vmlinux.btf: pahole (pahole) is not available
> > > Failed to generate BTF for vmlinux
> > > Try to disable CONFIG_DEBUG_INFO_BTF
> > > make[1]: *** [/tmp/kci/linux/Makefile:1247: vmlinux] Error 1
> > > make[1]: Leaving directory '/tmp/kci/linux/build'
> > > make: *** [Makefile:237: __sub-make] Error 2
> > > make: Leaving directory '/tmp/kci/linux'
> > > 
> > > Would it be possible to get pahole added to the build
> > environments
> > > used to
> > > build android kernels?
> > > 
> > > -Todd
> > > 
> > > 
> > > 
> > > 
> > > 
> > 
> >