WARNING: DATA RACE
DIAGNOSIS:
I0404 16:15:47.972751   41652 x:0] ***************************
I0404 16:15:47.978742   41652 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-0]
I0404 16:15:47.978837   41652 x:0] Version release-20190304.1-85-gefe4461d74a1
I0404 16:15:47.978876   41652 x:0] PID: 41652
I0404 16:15:47.978936   41652 x:0] UID: 0, GID: 0
I0404 16:15:47.978974   41652 x:0] Configuration:
I0404 16:15:47.979072   41652 x:0] 		RootDir: /syzkaller/managers/kvm-direct-overlay-host-race/workdir/gvisor_root
I0404 16:15:47.979108   41652 x:0] 		Platform: ptrace
I0404 16:15:47.981262   41652 x:0] 		FileAccess: exclusive, overlay: true
I0404 16:15:47.981320   41652 x:0] 		Network: host, logging: false
I0404 16:15:47.981376   41652 x:0] 		Strace: false, max size: 1024, syscalls: []
I0404 16:15:47.981436   41652 x:0] ***************************
D0404 16:15:47.998899   41652 x:0] Load container "/syzkaller/managers/kvm-direct-overlay-host-race/workdir/gvisor_root" "ci-gvisor-kvm-direct-overlay-host-race-0"
D0404 16:15:48.074533   41652 x:0] Signal container "ci-gvisor-kvm-direct-overlay-host-race-0": signal 0
D0404 16:15:48.074705   41652 x:0] Signal sandbox "ci-gvisor-kvm-direct-overlay-host-race-0"
D0404 16:15:48.076084   41652 x:0] Connecting to sandbox "ci-gvisor-kvm-direct-overlay-host-race-0"
D0404 16:15:48.081696   41652 x:0] urpc: successfully marshalled 120 bytes.
D0404 16:15:48.096645   41652 x:0] urpc: unmarshal success.
I0404 16:15:48.101525   41652 x:0] Found sandbox "ci-gvisor-kvm-direct-overlay-host-race-0", PID: 9247
I0404 16:15:48.101624   41652 x:0] Retrieving sandbox stacks
D0404 16:15:48.101664   41652 x:0] Stacks sandbox "ci-gvisor-kvm-direct-overlay-host-race-0"
D0404 16:15:48.101689   41652 x:0] Connecting to sandbox "ci-gvisor-kvm-direct-overlay-host-race-0"
D0404 16:15:48.101842   41652 x:0] urpc: successfully marshalled 36 bytes.
D0404 16:15:49.107548   41652 x:0] urpc: unmarshal success.
I0404 16:15:49.107903   41652 x:0]      *** Stack dump ***
goroutine 1815936 [running]:
gvisor.googlesource.com/gvisor/pkg/log.Stacks(0x45c801, 0xc00034cf00, 0xc002757140, 0xc00378f880)
	pkg/log/log.go:259 +0xb6
gvisor.googlesource.com/gvisor/runsc/boot.(*debug).Stacks(0x23e9c70, 0x23e9c70, 0xc0006be690, 0x0, 0x0)
	runsc/boot/debug.go:26 +0x38
reflect.Value.call(0xc00034cf00, 0xc00036a198, 0x13, 0x1136768, 0x4, 0xc002441eb8, 0x3, 0x3, 0x4a864e, 0xfe6740, ...)
	GOROOT/src/reflect/value.go:447 +0x649
reflect.Value.Call(0xc00034cf00, 0xc00036a198, 0x13, 0xc002441eb8, 0x3, 0x3, 0x0, 0x23e9c70, 0x16)
	GOROOT/src/reflect/value.go:308 +0xc1
gvisor.googlesource.com/gvisor/pkg/urpc.(*Server).handleOne(0xc000368090, 0xc0034cce10, 0x0, 0x0)
	pkg/urpc/urpc.go:325 +0x63f
gvisor.googlesource.com/gvisor/pkg/urpc.(*Server).handleRegistered(0xc000368090, 0xc0034cce10, 0xc000368090, 0xc0034cce10)
	pkg/urpc/urpc.go:420 +0x43
gvisor.googlesource.com/gvisor/pkg/urpc.(*Server).StartHandling.func1(0xc000368090, 0xc0034cce10)
	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, 25 minutes]:
sync.runtime_Semacquire(0xc000282354)
	GOROOT/src/runtime/sema.go:56 +0x39
sync.(*WaitGroup).Wait(0xc000282354)
	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(0xc0002b8780, 0x0, 0x0)
	runsc/boot/loader.go:781 +0x74
gvisor.googlesource.com/gvisor/runsc/cmd.(*Boot).Execute(0xc000264090, 0x12c8ec0, 0xc0000ce008, 0xc00025c540, 0xc00027a140, 0x2, 0x2, 0x0)
	runsc/cmd/boot.go:252 +0x12e4
github.com/google/subcommands.(*Commander).Execute(0xc00012a000, 0x12c8ec0, 0xc0000ce008, 0xc00027a140, 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