WARNING: DATA RACE
Write at 0x00c0004359d8 by goroutine 300:
  sync/atomic.CompareAndSwapInt32()
      bazel-out/k8-fastbuild/bin/external/io_bazel_rules_go/linux_amd64_static_race_stripped/stdlib%/src/runtime/race_amd64.s:293 +0xb
  sync.(*Mutex).Lock()
      GOROOT/src/sync/mutex.go:74 +0x4d
  gvisor.googlesource.com/gvisor/pkg/sentry/kernel/shm.(*Shm).RemoveMapping()
      pkg/sentry/kernel/shm/shm.go:421 +0x47
  gvisor.googlesource.com/gvisor/pkg/sentry/mm.(*MemoryManager).removeVMAsLocked()
      pkg/sentry/mm/vma.go:371 +0x51a
  gvisor.googlesource.com/gvisor/pkg/sentry/mm.(*MemoryManager).unmapLocked()
      pkg/sentry/mm/vma.go:346 +0x8b
  gvisor.googlesource.com/gvisor/pkg/sentry/mm.(*MemoryManager).DecUsers()
      pkg/sentry/mm/lifecycle.go:226 +0x27e
  gvisor.googlesource.com/gvisor/pkg/sentry/kernel.(*runExitMain).execute()
      pkg/sentry/kernel/task_context.go:64 +0x383
  gvisor.googlesource.com/gvisor/pkg/sentry/kernel.(*Task).run()
      pkg/sentry/kernel/task_run.go:91 +0x2e5

Previous read at 0x00c0004359d8 by goroutine 291:
  reflect.typedmemmove()
      GOROOT/src/runtime/mbarrier.go:177 +0x0
  reflect.packEface()
      GOROOT/src/reflect/value.go:119 +0x104
  reflect.valueInterface()
      GOROOT/src/reflect/value.go:1009 +0x170
  fmt.(*pp).printValue()
      GOROOT/src/reflect/value.go:979 +0x3928
  fmt.(*pp).printValue()
      GOROOT/src/fmt/print.go:866 +0x2624
  fmt.(*pp).printArg()
      GOROOT/src/fmt/print.go:702 +0x2f2
  fmt.(*pp).doPrintf()
      GOROOT/src/fmt/print.go:1016 +0x315
  fmt.Fprintf()
      GOROOT/src/fmt/print.go:199 +0x7f
  gvisor.googlesource.com/gvisor/pkg/log.(*Writer).Emit()
      pkg/log/log.go:121 +0x89
  gvisor.googlesource.com/gvisor/pkg/log.GoogleEmitter.Emit()
      pkg/log/glog.go:162 +0x18b0
  gvisor.googlesource.com/gvisor/pkg/log.(*GoogleEmitter).Emit()
      <autogenerated>:1 +0xe1
  gvisor.googlesource.com/gvisor/pkg/log.(*BasicLogger).Debugf()
      pkg/log/log.go:177 +0x107
  gvisor.googlesource.com/gvisor/pkg/log.Debugf()
      pkg/log/log.go:235 +0x90
  gvisor.googlesource.com/gvisor/pkg/sentry/kernel/shm.(*Shm).RemoveMapping()
      pkg/sentry/kernel/shm/shm.go:436 +0x1dd
  gvisor.googlesource.com/gvisor/pkg/sentry/mm.(*MemoryManager).removeVMAsLocked()
      pkg/sentry/mm/vma.go:371 +0x51a
  gvisor.googlesource.com/gvisor/pkg/sentry/mm.(*MemoryManager).unmapLocked()
      pkg/sentry/mm/vma.go:346 +0x8b
  gvisor.googlesource.com/gvisor/pkg/sentry/mm.(*MemoryManager).DecUsers()
      pkg/sentry/mm/lifecycle.go:226 +0x27e
  gvisor.googlesource.com/gvisor/pkg/sentry/kernel.(*runExitMain).execute()
      pkg/sentry/kernel/task_context.go:64 +0x383
  gvisor.googlesource.com/gvisor/pkg/sentry/kernel.(*Task).run()
      pkg/sentry/kernel/task_run.go:91 +0x2e5