buildx failed when using cross platform

[sjiampojamarn]

I was able to build amd64 on amd64 hosts, as well as arm64 on arm64 hosts but not when trying to build amd64 containers on arm64 hosts. It happened only for some of my pipelines but not all. Weird. Here's an example that I got the failures.

$ uname -m
aarch64

$ docker  buildx version
github.com/docker/buildx v0.10.2 00ed17d

$ docker buildx inspect
Name:          builder
Driver:        docker-container
Last Activity: 2023-02-19 21:56:13 +0000 UTC

Nodes:
Name:      builder0
Endpoint:  unix:///var/run/docker.sock
Status:    running
Buildkit:  v0.11.3
Platforms: linux/arm64, linux/amd64, linux/amd64/v2, linux/riscv64, linux/ppc64le, linux/s390x, linux/386, linux/mips64le, linux/mips64, linux/arm/v7, linux/arm/v6

$docker buildx build --platform linux/amd64 -f Dockerfile https://github.com/jellyfin/jellyfin.git#master
....
 => ERROR [builder 4/4] RUN dotnet publish Jellyfin.Server --disable-parallel --configuration Release --output="/jellyfin" --self-contained --runtime linux-x64 -p  37.0s
------
 > [builder 4/4] RUN dotnet publish Jellyfin.Server --disable-parallel --configuration Release --output="/jellyfin" --self-contained --runtime linux-x64 -p:DebugSymbols=f
alse -p:DebugType=none:
#0 15.52 MSBuild version 17.4.1+fedecea9d for .NET
#0 35.22 Segmentation fault (core dumped)
------
Dockerfile:75
--------------------
  73 |     # because of changes in docker and systemd we need to not build in parallel at the moment
  74 |     # see https://success.docker.com/article/how-to-reserve-resource-temporarily-unavailable-errors-due-to-tasksmax-setting
  75 | >>> RUN dotnet publish Jellyfin.Server --disable-parallel --configuration Release --output="/jellyfin" --self-contained --runtime linux-x64 -p:DebugSymbols=false -p:DebugType=none
  76 |
  77 |     FROM app
--------------------
ERROR: failed to solve: process "/bin/sh -c dotnet publish Jellyfin.Server --disable-parallel --configuration Release --output=\"/jellyfin\" --self-contained --runtime linux-x64 -p:DebugSymbols=false -p:DebugType=none" did not complete successfully: exit code: 139

Things I've already tried in btw

$ docker system prune -a
$ docker pull tonistiigi/binfmt
$ docker run --privileged --rm tonistiigi/binfmt --uninstall qemu-*
$ docker run --privileged --rm tonistiigi/binfmt --install all
$ docker buildx rm builder
$ docker buildx prune -a -f
$ docker buildx create --name builder --use

Appreciated any help, pointer here.

[sjiampojamarn]

It turned out that dotnet 7.0 doesn't support QEMU
dotnet/runtime#13648 (comment)

https://gitlab.com/qemu-project/qemu/-/issues/249
is the related issue.

Closing this one as it's rather on the QEMU and dotnet side.

[JasonLandbridge]

This should now work with the latest dev build. Please see: PlexRipper/PlexRipper#363