Replies: 4 comments 5 replies
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You have to install |
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Thank you, however this is not the issue, as I had already done this: I am able to run ppc64le containers as well for instance, just not arm32. |
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Should I create a second issue for this, or should we continue solving the bug here? |
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This isn't something podman controls, it should all be setup by kernel and qemu-user-static, |
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interesting! it appears i do not, unless it would be any of the following aliases: I am not familiar with |
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Update; I tried registering it manually, but doesn't seem to have helped much: [u@vfa ~]$ echo ":qemu-arm:M:0:7f454c4601010100000000000000000002002800:ffffffffffffff00fffffffffffffffffeffffff:/usr/bin/qemu-arm-static:F" > /proc/sys/fs/binfmt_misc/register
[u@vfa ~]$
[u@vfa ~]$ ls -al /proc/sys/fs/binfmt_misc/qemu-arm
-rw-r--r--. 1 root root 0 Jul 24 12:33 /proc/sys/fs/binfmt_misc/qemu-arm
[u@vfa ~]$
[u@vfa ~]$ cat /proc/sys/fs/binfmt_misc/qemu-arm
enabled
interpreter /usr/bin/qemu-arm-static
flags: F
offset 0
magic 37663435346334363031303130313030303030303030303030303030303030303032303032383030
mask 66666666666666666666666666663030666666666666666666666666666666666665666666666666
[u@vfa ~]$
[u@vfa ~]$ /usr/bin/qemu-arm-static --version
qemu-arm version 7.2.1 (qemu-7.2.1-2.fc38)
Copyright (c) 2003-2022 Fabrice Bellard and the QEMU Project developers
[u@vfa ~]$
[u@vfa ~]$ podman run --arch arm --rm -it alpine:latest /bin/ash
{"msg":"exec container process `/bin/ash`: Exec format error","level":"error","time":"2023-07-24T10:34:38.600697Z"} |
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https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1027781 This makes it sounds like there is no emulation because they expect an arm64 processor to be able to handle arm32 code but that does not seem to be the case for the M1 |
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Nice find 👍 Guessing this will be easier to workaround when Fedora switches to qemu 8.0. Until then, I failed to notice that the resulting magic+mask from my manual registration of So the following manual registration of echo ":qemu-arm:M:0:\x7f\x45\x4c\x46\x01\x01\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x28\x00:\xff\xff\xff\xff\xff\xff\xff\x00\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff\xff:/usr/bin/qemu-arm-static:F" > /proc/sys/fs/binfmt_misc/registerThank you for your help :-) |
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This happens because M1 does not have native support for arm32, which is generally expected by Linux. The issue can be avoided using the following command once after each reboot: echo ":qemu-arm:M:0:\x7f\x45\x4c\x46\x01\x01\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x28\x00:\xff\xff\xff\xff\xff\xff\xff\x00\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff\xff:/usr/bin/qemu-arm-static:F" > /proc/sys/fs/binfmt_misc/registerFor more context, see the following links: |
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Issue Description
When running the following command on an aarch64 host (an Apple M1 MBP running Fedora38 in UTM/qemu), I expect it to realize that arm32 binaries cannot be executed natively, and to use qemu-user-static like it successfully does for amd64 and others.
This is not the case, and the container fails to start with an
exec format error.Steps to reproduce the issue
Describe the results you received
{"msg":"exec container process `/bin/ash`: Exec format error","level":"error","time":"2023-07-23T17:13:21.843021Z"}Describe the results you expected
an alpine ash prompt
podman info output
Podman in a container
No
Privileged Or Rootless
Rootless
Upstream Latest Release
Yes
Additional environment details
podman 4.6.0 was installed from fedora's
updates-testingrepoAdditional information
is there something I can do to force the use of
qemu-arm-staticto run the container?Beta Was this translation helpful? Give feedback.
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