manifest list (multiarch) picks wrong arch on ARMv6 #41017
Description
Description
The command docker pull executed on a armv6 Raspberry Pi One ("Model B Plus Rev 1.2") running a 32-bit Raspbian OS will fail to pull the correct docker image
defined in a manifest as soon as a 'linux/arm/v7' manifest entry exists.
Steps to reproduce the issue:
uname -m && docker run --rm arm32v6/alpine:3.8 sh -c 'cat /etc/*release | grep PRETTY_NAME'uname -m && docker run --rm arm32v6/alpine:3.9 sh -c 'cat /etc/*release | grep PRETTY_NAME'uname -m && docker run --rm alpine:3.8 sh -c 'cat /etc/*release | grep PRETTY_NAME'uname -m && docker run --rm alpine:3.9 sh -c 'cat /etc/*release | grep PRETTY_NAME'
Describe the results you received:
$ uname -m && docker run --rm arm32v6/alpine:3.8 sh -c 'cat /etc/*release | grep PRETTY_NAME'
armv6l
PRETTY_NAME="Alpine Linux v3.8"
$ uname -m && docker run --rm arm32v6/alpine:3.9 sh -c 'cat /etc/*release | grep PRETTY_NAME'
armv6l
PRETTY_NAME="Alpine Linux v3.9"
$ uname -m && docker run --rm alpine:3.8 sh -c 'cat /etc/*release | grep PRETTY_NAME'
armv6l
PRETTY_NAME="Alpine Linux v3.8"
$ uname -m && docker run --rm alpine:3.9 sh -c 'cat /etc/*release | grep PRETTY_NAME'
armv6l
$ echo $?
139
For steps 1,2 and 3, I was expecting these results. However, at step 4, the 'docker run' command did not produce any output and exits
with a 139 return code.
Describe the results you expected:
For step 4, I was expecting the same result as in step 2:
armv6l
PRETTY_NAME="Alpine Linux v3.9"
Additional information you deem important (e.g. issue happens only occasionally):
There is no "linux/arm/v7" image on alpine:3.8 manifest:
$ docker run --rm mplatform/mquery alpine:3.8Image: alpine:3.8
* Manifest List: Yes
* Supported platforms:
- linux/amd64
- linux/arm/v6
- linux/arm64
- linux/386
- linux/ppc64le
- linux/s390x
But alpine:3.9 manifest defines a linux/arm/v7 entry:
$ docker run --rm mplatform/mquery alpine:3.9
Image: alpine:3.9
* Manifest List: Yes
* Supported platforms:
- linux/amd64
- linux/arm/v6
- linux/arm/v7
- linux/arm64
- linux/386
- linux/ppc64le
- linux/s390x
If you prefer, with docker manifest inspect:
$ DOCKER_CLI_EXPERIMENTAL=enabled docker manifest inspect alpine:3.8
[...]
"digest": "sha256:dabea2944dcc2b86482b4f0b0fb62da80e0673e900c46c0e03b45919881a5d84",
"platform": {
"architecture": "arm",
"os": "linux",
"variant": "v6"
}
[...]
$ DOCKER_CLI_EXPERIMENTAL=enabled docker manifest inspect alpine:3.9
[...]
{
"mediaType": "application/vnd.docker.distribution.manifest.v2+json",
"size": 528,
"digest": "sha256:7a3d88cbc7e2d6c0213deaf2d006933c9f5905c4eb7846b703a66fc6504000b7",
"platform": {
"architecture": "arm",
"os": "linux",
"variant": "v6"
}
},
{
"mediaType": "application/vnd.docker.distribution.manifest.v2+json",
"size": 528,
"digest": "sha256:cfd8b55d209956f63c8fcc931f5c6874984e5e0ffdcb8f45ba9085f190385d73",
"platform": {
"architecture": "arm",
"os": "linux",
"variant": "v7"
}
},
[...]
An evidence that dockerd 19.03.8 pulls the (wrong) linux/arm/v7 images variant:
$ docker pull arm32v7/alpine:3.9
$ docker images | grep "alpine"
arm32v6/alpine 3.8 e60f4bcd6c89 4 months ago 4.01MB # OK
alpine 3.8 e60f4bcd6c89 4 months ago 4.01MB # OK
arm32v6/alpine 3.9 4fe9c9b2a0c4 4 weeks ago 4.68MB # OK
arm32v7/alpine 3.9 9df0ff5446fc 4 weeks ago 3.72MB # OK
alpine 3.9 9df0ff5446fc 4 weeks ago 3.72MB # NOK: should be '4fe9c9b2a0c4' and not '9df0ff5446fc' !
Output of docker version:
Client: Docker Engine - Community
Version: 19.03.8
API version: 1.40
Go version: go1.12.17
Git commit: afacb8b
Built: Wed Mar 11 01:35:24 2020
OS/Arch: linux/arm
Experimental: false
Server: Docker Engine - Community
Engine:
Version: 19.03.8
API version: 1.40 (minimum version 1.12)
Go version: go1.12.17
Git commit: afacb8b
Built: Wed Mar 11 01:29:22 2020
OS/Arch: linux/arm
Experimental: false
containerd:
Version: 1.2.13
GitCommit: 7ad184331fa3e55e52b890ea95e65ba581ae3429
runc:
Version: 1.0.0-rc10
GitCommit: dc9208a3303feef5b3839f4323d9beb36df0a9dd
docker-init:
Version: 0.18.0
GitCommit: fec3683
Output of docker info:
Client:
Debug Mode: false
Server:
Containers: 2
Running: 2
Paused: 0
Stopped: 0
Images: 34
Server Version: 19.03.8
Storage Driver: overlay2
Backing Filesystem: <unknown>
Supports d_type: true
Native Overlay Diff: true
Logging Driver: json-file
Cgroup Driver: cgroupfs
Plugins:
Volume: local
Network: bridge host ipvlan macvlan null overlay
Log: awslogs fluentd gcplogs gelf journald json-file local logentries splunk syslog
Swarm: active
NodeID: 2zsjxcgeymlaecu00y8j0i1uw
Is Manager: true
ClusterID: t5ftctfw0dlnxbve8ilm7yo0x
Managers: 1
Nodes: 1
Default Address Pool: 10.0.0.0/8
SubnetSize: 24
Data Path Port: 4789
Orchestration:
Task History Retention Limit: 5
Raft:
Snapshot Interval: 10000
Number of Old Snapshots to Retain: 0
Heartbeat Tick: 1
Election Tick: 10
Dispatcher:
Heartbeat Period: 5 seconds
CA Configuration:
Expiry Duration: 3 months
Force Rotate: 0
Autolock Managers: false
Root Rotation In Progress: false
Node Address: 192.168.0.114
Manager Addresses:
192.168.0.114:2377
Runtimes: runc
Default Runtime: runc
Init Binary: docker-init
containerd version: 7ad184331fa3e55e52b890ea95e65ba581ae3429
runc version: dc9208a3303feef5b3839f4323d9beb36df0a9dd
init version: fec3683
Security Options:
seccomp
Profile: default
Kernel Version: 4.19.97+
Operating System: Raspbian GNU/Linux 10 (buster)
OSType: linux
Architecture: armv6l
CPUs: 1
Total Memory: 432.4MiB
Name: white
ID: QDNQ:Y3WR:ALAX:BXDG:JRKM:VBXW:SEC3:LX7D:LLFH:GG2O:EHK6:GG4G
Docker Root Dir: /var/lib/docker
Debug Mode: false
Registry: https://index.docker.io/v1/
Labels:
Experimental: false
Insecure Registries:
127.0.0.0/8
Live Restore Enabled: false
WARNING: No swap limit support
WARNING: No cpu cfs quota support
WARNING: No cpu cfs period support
WARNING: No cpuset support
Additional environment details (AWS, VirtualBox, physical, etc.):
This test was ran on a "Raspberry Pi Model B Plus Rev 1.2".
Important device info: it is an armhf v6 (and not v7 !) device, even if its 'CPU architecture' is set to 7 !
$ dpkg --print-architecture
armhf
$ uname -m
armv6l
$ cat /proc/cpuinfo | grep "CPU architecture"
CPU architecture: 7