intermittent issue: "Unsupported signal: <nil>. Discarding.." pending to the return from "docker run" on latest windows docker CE master-dockerproject-2021-02-03 #41985
Description
Description
intermittent issue: "Unsupported signal: . Discarding.." pending to the return from "docker run" on latest windows docker from master.dockerproject.org
intermittent issue: "Unsupported signal: . Discarding.." pending to the return from "docker run" on latest windows docker from master.dockerproject.org
Steps to reproduce the issue:
- C:\docker pull mcr.microsoft.com/windows/nanoserver:20H2-KB4598242
20H2-KB4598242: Pulling from windows/nanoserver
2ddfbf39b1d8: Already exists
Digest: sha256:b0a754e60c8fdf311b29db7d871452a431c4b86ae4730450b6fe320da533e31e
Status: Downloaded newer image for mcr.microsoft.com/windows/nanoserver:20H2-KB4598242
mcr.microsoft.com/windows/nanoserver:20H2-KB4598242 - C:>docker run --isolation hyperv --rm mcr.microsoft.com/windows/nanoserver:20H2-KB4598242 cmd /k echo hello
hello
C:>Unsupported signal: . Discarding.
C:>docker run --rm mcr.microsoft.com/windows/nanoserver:20H2-KB4598242 cmd /k echo hello
hello
C:>Unsupported signal: . Discarding.
Describe the results you received:
"Unsupported signal: . Discarding." is pending to the returned expected message
Describe the results you expected:
no pending error
Additional information you deem important (e.g. issue happens only occasionally):
Container host Windows Version: it repros on any version of windows host both server and client sku. server2019, Windows Server 1909, Windows Server 1903, Windows Server 20H2, Windows Server 2004
OS Name: Microsoft Windows 10 Enterprise
OS Version: 10.0.19042 N/A Build 19042
I can repro it inside a VM as container host, but did not repro on physical machine.
Output of docker version:
docker version
Client: Docker Engine - Community
Version: master-dockerproject-2021-02-03
API version: 1.41
Go version: go1.13.15
Git commit: 70a00157f1
Built: Wed Feb 3 23:58:43 2021
OS/Arch: windows/amd64
Context: default
Experimental: true
Server: Docker Engine - Community
Engine:
Version: master-dockerproject-2021-02-03
API version: 1.41 (minimum version 1.24)
Go version: go1.13.15
Git commit: 8d31795
Built: Thu Feb 4 00:08:25 2021
OS/Arch: windows/amd64
Experimental: true
Output of docker info:
docker info
Client:
Context: default
Debug Mode: false
Server:
Containers: 0
Running: 0
Paused: 0
Stopped: 0
Images: 5
Server Version: master-dockerproject-2021-02-03
Storage Driver: windowsfilter (windows) lcow (linux)
Windows:
LCOW:
Logging Driver: json-file
Plugins:
Volume: local
Network: ics internal l2bridge l2tunnel nat null overlay private transparent
Log: awslogs etwlogs fluentd gcplogs gelf json-file local logentries splunk syslog
Swarm: inactive
Default Isolation: hyperv
Kernel Version: 10.0 19042 (19041.1.amd64fre.vb_release.191206-1406)
Operating System: Windows 10 Enterprise Version 2009 (OS Build 19042.746)
OSType: windows
Architecture: x86_64
CPUs: 8
Total Memory: 16GiB
Name: T20h22101BC
ID: UC7Q:3NRT:BELW:XWDW:43UT:PIMS:JWTW:AA55:JVBY:KWCQ:OAWQ:QXUG
Docker Root Dir: C:\docker
Debug Mode: true
File Descriptors: -1
Goroutines: 25
System Time: 2021-02-04T18:51:25.9398485-08:00
EventsListeners: 0
Registry: https://index.docker.io/v1/
Labels:
Experimental: true
Insecure Registries:
127.0.0.0/8
Live Restore Enabled: false
Product License: Community Engine
WARNING: API is accessible on http://0.0.0.0:2375 without encryption.
Access to the remote API is equivalent to root access on the host. Refer
to the 'Docker daemon attack surface' section in the documentation for
more information: https://docs.docker.com/engine/security/security/#docker-daemon-attack-surface
Additional environment details (AWS, VirtualBox, physical, etc.):
Windows VM