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[77.162.229.73]) by smtp.gmail.com with ESMTPSA id 4fb4d7f45d1cf-5a30c2f8c10sm1760067a12.76.2024.07.19.14.20.56 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 19 Jul 2024 14:20:56 -0700 (PDT) Sender: Domenico Andreoli Date: Fri, 19 Jul 2024 23:20:54 +0200 From: Domenico Andreoli To: Arnaldo Carvalho de Melo Cc: debian-kernel@lists.debian.org, debian-powerpc@lists.debian.org, Alan Maguire , Jiri Olsa , Ben Hutchings , 1076564@bugs.debian.org, dwarves@vger.kernel.org Subject: Re: Bug#1076564: pahole BTF processing seems flaky on powerpc Message-ID: References: <172133976964.70930.13662511677581571913.reportbug@deadeye.wl.decadent.org.uk> Precedence: bulk X-Mailing-List: dwarves@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="iywd2SPOB9vh9eZs" Content-Disposition: inline In-Reply-To: --iywd2SPOB9vh9eZs Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable CCing debian-kernel and debian-powerpc On Fri, Jul 19, 2024 at 04:13:00PM -0300, Arnaldo Carvalho de Melo wrote: > Adding Alan and Jiri to the CC list. >=20 > On Fri, Jul 19, 2024 at 08:53:24AM +0200, Domenico Andreoli wrote: > > Hi Arnaldo, > >=20 > > On Thu, Jul 18, 2024 at 11:56:09PM +0200, Ben Hutchings wrote: > > > Package: pahole > > > Version: 1.27-1 > > > Severity: normal > > > X-Debbugs-Cc: debian-kernel@lists.debian.org > > >=20 > > > Several kernel builds on powerpc have failed recently: > > >=20 > > > 6.8.12-1: https://buildd.debian.org/status/fetch.php?pkg=3Dlinux&a= rch=3Dpowerpc&ver=3D6.8.12-1&stamp=3D1717234422&raw=3D1 > > > 6.9.9-1: https://buildd.debian.org/status/fetch.php?pkg=3Dlinux&a= rch=3Dpowerpc&ver=3D6.9.9-1&stamp=3D1720906547&raw=3D1 > > > 6.10-1~exp1: https://buildd.debian.org/status/fetch.php?pkg=3Dlinux&a= rch=3Dpowerpc&ver=3D6.10-1%7Eexp1&stamp=3D1721287862&raw=3D1 > > >=20 > > > Note, these log files are up to 270 MB in size and should be > > > downloaded; at least Firefox becomes unresponsive when trying to > > > display them. > > >=20 > > > For each of these, the failure seems to start with an error from > > > pahole such as: > > >=20 > > > [102044] ARRAY (anon) type_id=3D99491 index_type_id=3D14 nr_elems= =3D12 Error emitting BTF type > > > Encountered error while encoding BTF. > >=20 > > Does the above error ring any bell? >=20 > Nope > =20 > > Is there anything I can do to help? >=20 > From the 6.10-1~exp1: > https://buildd.debian.org/status/fetch.php?pkg=3Dlinux&arch=3Dpowerpc&ver= =3D6.10-1%7Eexp1&stamp=3D1721287862&raw=3D1 > file: >=20 > + LLVM_OBJCOPY=3Dpowerpc-linux-gnu-objcopy pahole -J -j --btf_features=3D= encode_force,var,float,enum64,decl_tag,type_tag,optimized_func,consistent_f= unc --lang_exclude=3Drust .tmp_vmlinux.btf >=20 > Can I have access to that .tmp_vmlinux.btf file so that I can try to > reproduce it here? I don't have access to the build host (blaauw2) and I've some doubts it would still have that file. Maybe our kernel team and powerpc porters have suggestions? 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