WARNING: DATA RACE
DIAGNOSIS:
I0402 17:09:20.558258   25677 x:0] ***************************
I0402 17:09:20.558402   25677 x:0] Args: [/syzkaller/managers/kvm-direct-overlay-host-race/current/image -root /syzkaller/managers/kvm-direct-overlay-host-race/workdir/gvisor_root -watchdog-action=panic -network=none -debug -platform=ptrace -file-access=exclusive -overlay -network=host debug -stacks ci-gvisor-kvm-direct-overlay-host-race-3]
I0402 17:09:20.558461   25677 x:0] Version release-20190304.1-70-g1df3fa699774
I0402 17:09:20.558476   25677 x:0] PID: 25677
I0402 17:09:20.558491   25677 x:0] UID: 0, GID: 0
I0402 17:09:20.558518   25677 x:0] Configuration:
I0402 17:09:20.558532   25677 x:0] 		RootDir: /syzkaller/managers/kvm-direct-overlay-host-race/workdir/gvisor_root
I0402 17:09:20.558554   25677 x:0] 		Platform: ptrace
I0402 17:09:20.558581   25677 x:0] 		FileAccess: exclusive, overlay: true
I0402 17:09:20.558631   25677 x:0] 		Network: host, logging: false
I0402 17:09:20.558656   25677 x:0] 		Strace: false, max size: 1024, syscalls: []
I0402 17:09:20.558683   25677 x:0] ***************************
D0402 17:09:20.558743   25677 x:0] Load container "/syzkaller/managers/kvm-direct-overlay-host-race/workdir/gvisor_root" "ci-gvisor-kvm-direct-overlay-host-race-3"
D0402 17:09:20.564553   25677 x:0] Signal container "ci-gvisor-kvm-direct-overlay-host-race-3": signal 0
D0402 17:09:20.564681   25677 x:0] Signal sandbox "ci-gvisor-kvm-direct-overlay-host-race-3"
D0402 17:09:20.564747   25677 x:0] Connecting to sandbox "ci-gvisor-kvm-direct-overlay-host-race-3"
D0402 17:09:20.565847   25677 x:0] urpc: successfully marshalled 120 bytes.
D0402 17:09:20.567240   25677 x:0] urpc: unmarshal success.
I0402 17:09:20.567328   25677 x:0] Found sandbox "ci-gvisor-kvm-direct-overlay-host-race-3", PID: 35642
I0402 17:09:20.567397   25677 x:0] Retrieving sandbox stacks
D0402 17:09:20.567417   25677 x:0] Stacks sandbox "ci-gvisor-kvm-direct-overlay-host-race-3"
D0402 17:09:20.567446   25677 x:0] Connecting to sandbox "ci-gvisor-kvm-direct-overlay-host-race-3"
D0402 17:09:20.567527   25677 x:0] urpc: successfully marshalled 36 bytes.
D0402 17:09:20.826124   25677 x:0] urpc: unmarshal success.
I0402 17:09:20.826250   25677 x:0]      *** Stack dump ***
goroutine 1257989 [running]:
gvisor.googlesource.com/gvisor/pkg/log.Stacks(0x45c801, 0xc0002d1260, 0xc0021a6180, 0xc0013c2000)
	pkg/log/log.go:259 +0xb6
gvisor.googlesource.com/gvisor/runsc/boot.(*debug).Stacks(0x23dbc70, 0x23dbc70, 0xc000486080, 0x0, 0x0)
	runsc/boot/debug.go:26 +0x38
reflect.Value.call(0xc0002d1260, 0xc0002ce1c0, 0x13, 0x112e16b, 0x4, 0xc000dd3eb8, 0x3, 0x3, 0x4a864e, 0xfdf3c0, ...)
	GOROOT/src/reflect/value.go:447 +0x649
reflect.Value.Call(0xc0002d1260, 0xc0002ce1c0, 0x13, 0xc000dd3eb8, 0x3, 0x3, 0x0, 0x23dbc70, 0x16)
	GOROOT/src/reflect/value.go:308 +0xc1
gvisor.googlesource.com/gvisor/pkg/urpc.(*Server).handleOne(0xc0002e25a0, 0xc00228efc0, 0x0, 0x0)
	pkg/urpc/urpc.go:325 +0x63f
gvisor.googlesource.com/gvisor/pkg/urpc.(*Server).handleRegistered(0xc0002e25a0, 0xc00228efc0, 0xc0002e25a0, 0xc00228efc0)
	pkg/urpc/urpc.go:420 +0x43
gvisor.googlesource.com/gvisor/pkg/urpc.(*Server).StartHandling.func1(0xc0002e25a0, 0xc00228efc0)
	pkg/urpc/urpc.go:440 +0x77
created by gvisor.googlesource.com/gvisor/pkg/urpc.(*Server).StartHandling
	pkg/urpc/urpc.go:438 +0x6f

goroutine 1 [semacquire, 15 minutes]:
sync.runtime_Semacquire(0xc0002d2264)
	GOROOT/src/runtime/sema.go:56 +0x39
sync.(*WaitGroup).Wait(0xc0002d2264)
	GOROOT/src/sync/waitgroup.go:130 +0xb2
gvisor.googlesource.com/gvisor/pkg/sentry/kernel.(*Kernel).WaitExited(...)
	pkg/sentry/kernel/kernel.go:820
gvisor.googlesource.com/gvisor/runsc/boot.(*Loader).WaitExit(0xc0002ca140, 0x0, 0x0)
	runsc/boot/loader.go:781 +0x74
gvisor.googlesource.com/gvisor/runsc/cmd.(*Boot).Execute(0xc00027a120, 0x12bfc20, 0xc000148010, 0xc00014eae0, 0xc0001cf0a0, 0x2, 0x2, 0x0)
	runsc/cmd/boot.go:252 +0x12e4
github.com/google/subcommands.(*Commander).Execute(0xc000154000, 0x12bfc20, 0xc000148010, 0xc0001cf0a0, 0x2, 0x2, 0x203000)
	external/com_github_google_subcommands/subcommands.go:141 +0x522
github.com/google/subcommands.Execute(...)
	external/com_github_google_subcommands/subcommands.go:371
main.main()
	runsc/main.go:238 +0x2473