Segfaults for builds using QEMU #124
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Correction, newer versions of qemu are pushed to Docker Hub (https://hub.docker.com/r/tonistiigi/binfmt/tags), but the |
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josephleekl
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Jan 29, 2025
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**Context:**
The [aarch64 wheel build CI action has been
failing](https://github.com/PennyLaneAI/pennylane-lightning/actions/workflows/wheel_linux_aarch64.yml)
since circa 24 Jan 2025. They fail with a segmentation fault during the
CIBW process. This has also been observed for similar wheel builds with
QEMU with other repositories:
docker/setup-qemu-action#188
ssciwr/clang-format-wheel#124
tonistiigi/binfmt#215
tonistiigi/binfmt#165
and fix attempt:
ssciwr/clang-format-wheel#125
It is due to using an old version (v7) of qemu that comes with binfmt.
`setup-qemu-action` by default uses `binfmt:latest` image which has not
been updated in 2 years.
**Description of the Change:**
Use a newer QEMU image (v8) from binfmt.
**Benefits:**
aarch64 wheel builds will succeed again,
[e.g.](https://github.com/PennyLaneAI/pennylane-lightning/actions/runs/13019772888?pr=1056)
**Possible Drawbacks:**
**Related GitHub Issues:**
[sc-83297]
---------
Co-authored-by: ringo-but-quantum <[email protected]>
Co-authored-by: Ali Asadi <[email protected]>
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It looks like the jobs that use QEMU have started failing as of... several days ago? This also doesn't seem to be limited to this project, since a rebuild of another project I maintain (https://github.com/nightlark/swig-pypi/actions/workflows/build.yml) with no changes in the past 5 days is also failing with a similar error.
Based on updates to cibuildwheel, scikit-build-core, and other things, I think this might be related to the version of qemu used -- perhaps with an update to the GitHub Actions runner images that was gradually rolled out. There is also this report of an intermittent segfault in the repo for the project building the qemu binaries from a week ago, which if there was a runner image update that just finished rolling out lines up with the timeline for every qemu job now failing (tonistiigi/binfmt#215). That issue also suggests the fix is using a newer version of qemu, which unfortunately tonistiigi/binfmt hasn't published updated Docker images in a long time.
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