WARNING: DATA RACE DIAGNOSIS: I1222 23:44:09.206096 59550 x:0] *************************** I1222 23:44:09.206209 59550 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-1] I1222 23:44:09.206313 59550 x:0] Git Revision: 0df0df35fc4aa4d69dc01f7c7e2d9e0530a34db7 I1222 23:44:09.206345 59550 x:0] PID: 59550 I1222 23:44:09.206370 59550 x:0] UID: 0, GID: 0 I1222 23:44:09.206406 59550 x:0] Configuration: I1222 23:44:09.206426 59550 x:0] RootDir: /syzkaller/managers/kvm-direct-overlay-host-race/workdir/gvisor_root I1222 23:44:09.206447 59550 x:0] Platform: ptrace I1222 23:44:09.206474 59550 x:0] FileAccess: exclusive, overlay: true I1222 23:44:09.206501 59550 x:0] Network: host, logging: false I1222 23:44:09.206524 59550 x:0] Strace: false, max size: 1024, syscalls: [] I1222 23:44:09.206576 59550 x:0] *************************** D1222 23:44:09.207054 59550 x:0] Load container "/syzkaller/managers/kvm-direct-overlay-host-race/workdir/gvisor_root" "ci-gvisor-kvm-direct-overlay-host-race-1" D1222 23:44:09.210112 59550 x:0] Signal container "ci-gvisor-kvm-direct-overlay-host-race-1": signal 0 D1222 23:44:09.210199 59550 x:0] Signal sandbox "ci-gvisor-kvm-direct-overlay-host-race-1" D1222 23:44:09.210237 59550 x:0] Connecting to sandbox "ci-gvisor-kvm-direct-overlay-host-race-1" D1222 23:44:09.210666 59550 x:0] urpc: successfully marshalled 120 bytes. D1222 23:44:09.211756 59550 x:0] urpc: unmarshal success. I1222 23:44:09.211881 59550 x:0] Found sandbox "ci-gvisor-kvm-direct-overlay-host-race-1", PID: 42774 I1222 23:44:09.211942 59550 x:0] Retrieving sandbox stacks D1222 23:44:09.211960 59550 x:0] Stacks sandbox "ci-gvisor-kvm-direct-overlay-host-race-1" D1222 23:44:09.211996 59550 x:0] Connecting to sandbox "ci-gvisor-kvm-direct-overlay-host-race-1" D1222 23:44:09.212121 59550 x:0] urpc: successfully marshalled 36 bytes. D1222 23:44:09.395582 59550 x:0] urpc: unmarshal success. I1222 23:44:09.395697 59550 x:0] *** Stack dump *** goroutine 648334 [running]: gvisor.googlesource.com/gvisor/pkg/log.Stacks(0x459e01, 0x28, 0x45d3f2, 0x4e480d) pkg/log/log.go:259 +0xd1 gvisor.googlesource.com/gvisor/runsc/boot.(*debug).Stacks(0x22c8138, 0x22c8138, 0xc0003f6120, 0x0, 0x0) runsc/boot/debug.go:26 +0x38 reflect.Value.call(0xc0002ce780, 0xc0002cc1c8, 0x13, 0x10c1b7c, 0x4, 0xc002d25e68, 0x3, 0x3, 0x4f072e, 0xf81a00, ...) GOROOT/src/reflect/value.go:447 +0x635 reflect.Value.Call(0xc0002ce780, 0xc0002cc1c8, 0x13, 0xc002d25e68, 0x3, 0x3, 0x0, 0x22c8138, 0x16) GOROOT/src/reflect/value.go:308 +0xc1 gvisor.googlesource.com/gvisor/pkg/urpc.(*Server).handleOne(0xc0002e24e0, 0xc00131d3b0, 0x0, 0x0) pkg/urpc/urpc.go:298 +0x613 gvisor.googlesource.com/gvisor/pkg/urpc.(*Server).handleRegistered(0xc0002e24e0, 0xc00131d3b0, 0xc0002e24e0, 0xc00131d3b0) pkg/urpc/urpc.go:393 +0x43 gvisor.googlesource.com/gvisor/pkg/urpc.(*Server).StartHandling.func1(0xc0002e24e0, 0xc00131d3b0) pkg/urpc/urpc.go:413 +0x77 created by gvisor.googlesource.com/gvisor/pkg/urpc.(*Server).StartHandling pkg/urpc/urpc.go:411 +0x6f goroutine 1 [semacquire, 3 minutes]: sync.runtime_Semacquire(0xc0002d0264) GOROOT/src/runtime/sema.go:56 +0x39 sync.(*WaitGroup).Wait(0xc0002d0264) GOROOT/src/sync/waitgroup.go:130 +0xb5 gvisor.googlesource.com/gvisor/pkg/sentry/kernel.(*Kernel).WaitExited(0xc0002de000) pkg/sentry/kernel/kernel.go:800 +0x57 gvisor.googlesource.com/gvisor/runsc/boot.(*Loader).WaitExit(0xc0002de140, 0x0, 0x0) runsc/boot/loader.go:757 +0x50 gvisor.googlesource.com/gvisor/runsc/cmd.(*Boot).Execute(0xc00024a280, 0x1204500, 0xc000140010, 0xc000146b40, 0xc0001e5060, 0x2, 0x2, 0x0) runsc/cmd/boot.go:213 +0x1362 github.com/google/subcommands.(*Commander).Execute(0xc000154000, 0x1204500, 0xc000140010, 0xc0001e5060, 0x2, 0x2, 0x1) external/com_github_google_subcommands/subcommands.go:141 +0x525 github.com/google/subcommands.Execute(0x1204500, 0xc000140010, 0xc0001e5060, 0x2, 0x2, 0xc000136dc0) external/com_github_google_subcommands/subcommands.go:371 +0x81 main.main() runsc/main.go:223 +0x1f5d