Description

https://github.com/containerd/containerd/runs/1984545869?check_suite_focus=true#step:8:296

Steps to reproduce the issue:

1. use logtest.WithT to handle testing.TB
2. use log.G(ctx) print log

https://github.com/Iceber/containerd/blob/logtest/log/logtest/context_test.go

func TestLogTest(t *testing.T) {
        ctx := WithT(context.Background(), t)
        log.G(ctx).Info("log info")
}

Describe the results you received:
https://github.com/containerd/containerd/blob/master/snapshots/devmapper/snapshotter.go#L360

        log_hook.go:40 time="2021-02-26T03:15:15.069823052Z" level=debug msg="creating new thin device 'containerd-snapshotter-suite-pool-961076009-snap-1'"

Print log_hook.go:40 instead of the name of the file info that called log.G(ctx).Debug

Describe the results you expected:

        snapshotter.go:360 time="2021-02-26T03:15:15.069823052Z" level=debug msg="creating new thin device 'containerd-snapshotter-suite-pool-961076009-snap-1'"

Output of containerd --version:

(paste your output here)

Any other relevant information:
https://github.com/containerd/containerd/blob/master/log/logtest/log_hook.go#L35

func (h *testHook) Fire(e *logrus.Entry) error {
	s, err := h.fmt.Format(e)
	if err != nil {
		return err
	}
	h.t.Log(string(bytes.TrimRight(s, "\n")))
	return nil
}

The reason is that the t.Log is called in the logrus hook, so the information about the calling function and the file is printed