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shimv2/service: fix defer funtions never run with os.Exit()

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os.Exit() will terminate program immediately, the defer functions
won't be executed, so we add defer functions again before os.Exit().
Refer to https://pkg.go.dev/os#Exit

Fixes: #3059

Signed-off-by: Binbin Zhang <binbin36520@gmail.com>
This commit is contained in:
Binbin Zhang 2021-11-22 20:23:31 +08:00 committed by Samuel Ortiz
parent ac058b3897
commit 75bb340137
1 changed files with 6 additions and 0 deletions
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6
src/runtime/pkg/containerd-shim-v2/service.go
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@ -953,6 +953,12 @@ func (s *service) Shutdown(ctx context.Context, r *taskAPI.ShutdownRequest) (_ *
// exited when shimv2 terminated. Thus here to do the last cleanup of the hypervisor.
syscall.Kill(int(s.hpid), syscall.SIGKILL)
// os.Exit() will terminate program immediately, the defer functions won't be executed,
// so we add defer functions again before os.Exit().
// Refer to https://pkg.go.dev/os#Exit
shimLog.WithField("container", r.ID).Debug("Shutdown() end")
rpcDurationsHistogram.WithLabelValues("shutdown").Observe(float64(time.Since(start).Nanoseconds() / int64(time.Millisecond)))
os.Exit(0)
// This will never be called, but this is only there to make sure the