Windows nested docker panic() on build on bound volumes

[sitano]

Calling docker build . from bound volume from inside the container panics docker client. Calling the same thing from the copy of the volume works fine.

panic: runtime error: slice bounds out of range

goroutine 1 [running]:
panic(0xbe20e0, 0xc08200c020)
        /usr/local/go/src/runtime/panic.go:481 +0x3f4
syscall./usr/local/go/src/syscall/syscall_windows.go:1031 +0x4e9x0, 0x0, 0x0)
os.Readlink(0xc0823049c0, 0x19, 0x0, 0x0, 0x0, 0x0)
        /usr/local/go/src/os/file_posix.go:21 +0xc4
path/fil/usr/local/go/src/path/filepath/symlink.go:47 +0x20c, 0x0, 0x0, 0x0, 0x0)
path/filepath.walkLinks(0xc082312390, 0x19, 0xc0821bad58, 0x0, 0x0, 0x0, 0x0)
        /usr/local/go/src/path/filepath/symlink.go:77 +0x422
path/fil/usr/local/go/src/path/filepath/symlink.go:68 +0x2190, 0x0, 0x0, 0x0)
path/filepath.walkLinks(0xc082312390, 0x21, 0xc0821bad58, 0x0, 0x0, 0x0, 0x0)
        /usr/local/go/src/path/filepath/symlink.go:73 +0x2df
path/filepath.walkSymlinks(0xc082312390, 0x21, 0x0, 0x0, 0x0, 0x0)
        /usr/local/go/src/path/filepath/symlink.go:98 +0xae
path/filepath.evalSymlinks(0xc082312390, 0x21, 0x0, 0x0, 0x0, 0x0)
        /usr/local/go/src/path/filepath/symlink_windows.go:50 +0x5d
path/fil/usr/local/go/src/path/filepath/path.go:227 +0x4a0x0, 0x0)
github.com/docker/docker/builder.getDockerfileRelPath(0xc08200c1e4, 0x1, 0x0, 0x0, 0xc082312390, 0x21, 0x0, 0x0, 0x0, 0x0)
        /go/src/github.com/docker/docker/builder/context.go:188 +0x35d
github.com/docker/docker/builder.GetContextFromLocalDir(0xc08200c1e4, 0x1, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0)
        /go/src/github.com/docker/docker/builder/context.go:169 +0x1fe
github.com/docker/docker/api/client/image.runBuild(0xc082066510, 0xc08200c1e4, 0x1, 0x0, 0x0, 0xc0822d9dc0, 0xe694d0, 0x113d580, 0x0, 0x0, ...)
        /go/src/github.com/docker/docker/api/client/image/build.go:139 +0x2796
github.com/docker/docker/api/client/image.NewBuildCommand.func1(0xc0822fc900, 0xc0822f8ee0, 0x1, 0x1, 0x0, 0x0)
        /go/src/github.com/docker/docker/api/client/image/build.go:75 +0xa3
github.c/go/src/github.com/docker/docker/vendor/src/github.com/spf13/cobra/command.go:593 +0x705
github.c/go/src/github.com/docker/docker/vendor/src/github.com/spf13/cobra/command.go:683 +0x563
github.com/spf13/cobra.(*Command).Execute(0xc082001b00, 0x0, 0x0)
        /go/src/github.com/docker/docker/vendor/src/github.com/spf13/cobra/command.go:642 +0x34
github.com/docker/docker/cli/cobraadaptor.CobraAdaptor.run(0xc082001b00, 0xc082066510, 0xc08200c1b8, 0x5, 0xc082003f40, 0x1, 0x1, 0x0, 0x0)
        /go/src/github.com/docker/docker/cli/cobraadaptor/adaptor.go:121 +0x266
github.com/docker/docker/cli/cobraadaptor.CobraAdaptor.Command.func1(0xc082003f40, 0x1, 0x1, 0x0, 0x0)
        /go/src/github.com/docker/docker/cli/cobraadaptor/adaptor.go:129 +0x93
github.com/docker/docker/cli.(*Cli).Run(0xc0822f2e40, 0xc082003f30, 0x2, 0x2, 0x0, 0x0)
        /go/src/github.com/docker/docker/cli/cli.go:81 +0x352
main.main()
        /go/src/github.com/docker/docker/cmd/docker/docker.go:72 +0x4b1

---

BUG REPORT INFORMATION

Output of docker version:

Client:
 Version:      1.13.0-dev
 API version:  1.25
 Go version:   go1.6.3
 Git commit:   919257d
 Built:        Wed Aug  3 09:51:21 2016
 OS/Arch:      windows/amd64

Server:
 Version:      1.13.0-dev
 API version:  1.25
 Go version:   go1.6.3
 Git commit:   919257d
 Built:        Wed Aug  3 09:51:21 2016
 OS/Arch:      windows/amd64

Output of docker info:

Containers: 15
 Running: 3
 Paused: 0
 Stopped: 12
Images: 13
Server Version: 1.13.0-dev
Storage Driver: windowsfilter
 Windows:
Logging Driver: json-file
Plugins:
 Volume: local
 Network: nat null overlay
Swarm: inactive
Security Options:
Kernel Version: 10.0 14300 (14300.1045.amd64fre.rs1_release_svc.160705-1059)
Operating System: Windows Server 2016 Datacenter Technical Preview 5
OSType: windows
Architecture: x86_64
CPUs: 8
Total Memory: 28 GiB
Name: ACHEU001
ID: HS6A:DEGI:TTDB:YSUP:UZBP:DEXN:ILXE:BSHT:QYF3:WKAH:WIME:JMBW
Docker Root Dir: C:\ProgramData\docker
Debug Mode (client): true
Debug Mode (server): true
 File Descriptors: -1
 Goroutines: 53
 System Time: 2016-08-05T14:17:06.1810283Z
 EventsListeners: 0
Registry: https://index.docker.io/v1/
Insecure Registries:
 127.0.0.0/8
Live Restore Enabled: false

Additional environment details (AWS, VirtualBox, physical, etc.):
Azure Windows Server TP5

Steps to reproduce the issue:

1. Create a folder c:\test with Dockerfile:

FROM windowsservercore
ENV DOCKER_HOST "tcp://DOCKERD_IP_ADDRESS:2375"
ADD docker.exe c:/Windows/System32/docker.exe
ENTRYPOINT powershell

1. Build the image with cd c:\test; docker build -t docker .
2. Run the container with docker run -v c:\test:c:\test:rw -it docker
3. Run cd c:\test; docker build .

Describe the results you received:

panic()

Describe the results you expected:

new image

[thaJeztah]

ping @jstarks @darrenstahlmsft ptal, looks like something in the client trying to resolve the path of the Dockerfile

[lowenna]

This is another instance of golang/go#15978. It should be fixed (not verified) when docker/docker moves to golang 1.8

[vdemeester]

We should close this only when we switch to go 1.8 and make sure it's fixed 👼 🙏. I am re-opening

[thaJeztah]

Linking to #29030

[StefanScherer]

Working in Windows containers inside a volume mountpoint you probably need Go 1.9 golang/go#18555