Re: [CI-NOTIFY]: TCWG Bisect tcwg_kernel/llvm-master-aarch64-next-allnoconfig - Build # 10 - Successful!

Looks like Will and Catalin have fixes:
https://lore.kernel.org/linux-arm-kernel/20200318082830.GA31312@willie-the-truck/ (local)

On Wed, Mar 18, 2020 at 8:33 AM [off-list ref] wrote:

Could not identify regression in *linux* in CI configuration tcwg_kernel/llvm-master-aarch64-next-allnoconfig.  See 'Bisect log' in the links below for bisection details.

First few build errors in logs:
00:00:30 ./include/linux/elf.h:79:19: error: redefinition of 'arch_parse_elf_property'
00:00:30 make[1]: *** [arch/arm64/kernel/asm-offsets.s] Error 1
00:00:30 make: *** [prepare0] Error 2
Configuration details:
rr[llvm_url]="https://github.com/llvm/llvm-project.git"
rr[linux_url]="https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git"
rr[linux_branch]="ec947d0be5f959fff44d59161401515a98a837f3"

Results regressed to (for bad == 47780d7892b77e922bbe19b5dea99cde06b2f0e5)
# reset_artifacts:
-10
# build_llvm:
-1
# linux_n_obj:
23

from (for baseline_rev == ac309e7744bee222df6de0122facaf2d9706fa70)
# reset_artifacts:
-10
# build_llvm:
-1
# linux_n_obj:
445

Artifacts of bad build: https://ci.linaro.org/job/tcwg_kernel-bisect-llvm-master-aarch64-next-allnoconfig/10/artifact/artifacts/build-47780d7892b77e922bbe19b5dea99cde06b2f0e5/
Artifacts of baseline_rev build: https://ci.linaro.org/job/tcwg_kernel-bisect-llvm-master-aarch64-next-allnoconfig/10/artifact/artifacts/build-ac309e7744bee222df6de0122facaf2d9706fa70/
Build top page/logs: https://ci.linaro.org/job/tcwg_kernel-bisect-llvm-master-aarch64-next-allnoconfig/10/

Reproduce builds:
<cut>
mkdir investigate-linux-47780d7892b77e922bbe19b5dea99cde06b2f0e5
cd investigate-linux-47780d7892b77e922bbe19b5dea99cde06b2f0e5

git clone https://git.linaro.org/toolchain/jenkins-scripts

mkdir -p artifacts/manifests
curl -o artifacts/manifests/build-baseline.sh https://ci.linaro.org/job/tcwg_kernel-bisect-llvm-master-aarch64-next-allnoconfig/10/artifact/artifacts/manifests/build-baseline.sh
curl -o artifacts/manifests/build-parameters.sh https://ci.linaro.org/job/tcwg_kernel-bisect-llvm-master-aarch64-next-allnoconfig/10/artifact/artifacts/manifests/build-parameters.sh
curl -o artifacts/test.sh https://ci.linaro.org/job/tcwg_kernel-bisect-llvm-master-aarch64-next-allnoconfig/10/artifact/artifacts/test.sh
chmod +x artifacts/test.sh

# Reproduce the baseline build (build all pre-requisites)
./jenkins-scripts/tcwg_kernel-build.sh @@ artifacts/manifests/build-baseline.sh

cd linux

# Reproduce bad build
git checkout --detach 47780d7892b77e922bbe19b5dea99cde06b2f0e5
../artifacts/test.sh

# Reproduce baseline_rev build
git checkout --detach ac309e7744bee222df6de0122facaf2d9706fa70
../artifacts/test.sh

cd ..
</cut>

History of pending regressions and results: https://git.linaro.org/toolchain/ci/base-artifacts.git/log/?h=linaro-local/ci/tcwg_kernel/llvm-master-aarch64-next-allnoconfig

Artifacts: https://ci.linaro.org/job/tcwg_kernel-bisect-llvm-master-aarch64-next-allnoconfig/10/artifact/artifacts/
Build log: https://ci.linaro.org/job/tcwg_kernel-bisect-llvm-master-aarch64-next-allnoconfig/10/consoleText

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-- 
Thanks,
~Nick Desaulniers

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