network inspect fail: `conflist: no such file or directory` (returns...)

[apostasie]

Description

This is unfortunately the return of conflist failed to read.

This here has much better debugging info though.

Interestingly, the conflist read fails for an unrelated network, that has likely been deleted already, although somehow cni is trying to read it.

Intuition is that we need to lock on inspect somehow.

Steps to reproduce the issue

Hammer the tests.

Describe the results you received and expected

rm -f /tmp/nerdctl-test-prevent-concurrency/.lock; ./smoke.sh
test target: "nerdctl"
--- FAIL: TestNetworkCreate (0.00s)
    network_create_linux_test.go:114: ======================== Pre-test cleanup ========================
    network_create_linux_test.go:114: ======================== Test setup ========================
    network_create_linux_test.go:114: ======================== Test Run ========================
    network_create_linux_test.go:114: ======================== Processing subtests ========================
    --- FAIL: TestNetworkCreate/vanilla (0.18s)
        network_create_linux_test.go:114: ======================== Pre-test cleanup ========================
        helpers.go:64: /usr/local/bin/nerdctl --namespace=nerdctl-test network rm testnetworkcreate-vanilla-04e3e2c1
        helpers.go:64: /usr/local/bin/nerdctl --namespace=nerdctl-test network rm testnetworkcreate-vanilla-1-b457605f
        network_create_linux_test.go:114: ======================== Test setup ========================
        helpers.go:57: /usr/local/bin/nerdctl --namespace=nerdctl-test network create testnetworkcreate-vanilla-04e3e2c1
        utilities.go:66: /usr/local/bin/nerdctl --namespace=nerdctl-test network inspect testnetworkcreate-vanilla-04e3e2c1
        utilities.go:66: assertion failed: expect.ExitCode is not result.ExitCode: Expected exit code: 0

            Command:  /usr/local/bin/nerdctl --namespace=nerdctl-test network inspect testnetworkcreate-vanilla-04e3e2c1
            ExitCode: 1
            Error:    exit status 1
            Stdout:
            Stderr:   time="2024-10-05T12:31:24-07:00" level=fatal msg="1 errors:\nerror reading /home/dmp.linux/.config/cni/net.d/nerdctl-test/nerdctl-testnetworkinspect-basic-4db6d60f.conflist: open /home/dmp.linux/.config/cni/net.d/nerdctl-test/nerdctl-testnetworkinspect-basic-4db6d60f.conflist: no such file or directory"

            Env:
            SHELL=/bin/bash
            LOGNAME=dmp
            XDG_SESSION_TYPE=tty
            HOME=/home/dmp.linux
            LANG=C.UTF-8
            SSH_CONNECTION=192.168.5.2 51297 192.168.5.15 22
            LESSCLOSE=/usr/bin/lesspipe %s %s
            XDG_SESSION_CLASS=user
            TERM=xterm-256color
            LESSOPEN=| /usr/bin/lesspipe %s
            USER=dmp
            SHLVL=2
            XDG_SESSION_ID=2
            XDG_RUNTIME_DIR=/run/user/501
            SSH_CLIENT=192.168.5.2 51297 22
            XDG_DATA_DIRS=/usr/local/share:/usr/share:/var/lib/snapd/desktop
            DBUS_SESSION_BUS_ADDRESS=unix:path=/run/user/501/bus
            SSH_TTY=/dev/pts/1
            OLDPWD=/Users/dmp
            _=/usr/local/go/bin/go
            PATH=/usr/local/go/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/snap/bin:/usr/sbin:/sbin:/usr/sbin:/sbin:/usr/sbin:/sbin:/usr/local/go/bin
            PWD=/Users/dmp/Projects/go/nerd/nerdctl/cmd/nerdctl/network
            NERDCTL_TOML=/tmp/TestNetworkCreatevanilla1021619034/001/nerdctl.toml
            DOCKER_CONFIG=/tmp/TestNetworkCreatevanilla1021619034/001
        case.go:164: ======================== Post-test cleanup ========================
        helpers.go:64: /usr/local/bin/nerdctl --namespace=nerdctl-test network rm testnetworkcreate-vanilla-04e3e2c1
        helpers.go:64: /usr/local/bin/nerdctl --namespace=nerdctl-test network rm testnetworkcreate-vanilla-1-b457605f
    case.go:164: ======================== Post-test cleanup ========================
FAIL
FAIL	github.com/containerd/nerdctl/v2/cmd/nerdctl/network	3.801s
FAIL
FAIL

What version of nerdctl are you using?

main

Are you using a variant of nerdctl? (e.g., Rancher Desktop)

None

Host information

No response

[apostasie]

Bottom-line: the walker is definitely the problem here.