WARNING: DATA RACE Write at 0x00c0001d4048 by goroutine 316: gvisor.googlesource.com/gvisor/pkg/sentry/fs/ramfs.(*dirFileOperations).Readdir() pkg/sentry/fs/ramfs/dir.go:419 +0x1fb gvisor.googlesource.com/gvisor/pkg/sentry/fs.(*File).Readdir() pkg/sentry/fs/file.go:226 +0x129 DIAGNOSIS: I0125 15:21:44.618278 60282 x:0] *************************** I0125 15:21:44.618472 60282 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-2] I0125 15:21:44.618568 60282 x:0] Git Revision: cc995207531965b70bc1b812a70b91f242a92086 I0125 15:21:44.618601 60282 x:0] PID: 60282 I0125 15:21:44.618636 60282 x:0] UID: 0, GID: 0 I0125 15:21:44.618659 60282 x:0] Configuration: I0125 15:21:44.618684 60282 x:0] RootDir: /syzkaller/managers/kvm-direct-overlay-host-race/workdir/gvisor_root I0125 15:21:44.618706 60282 x:0] Platform: ptrace I0125 15:21:44.618788 60282 x:0] FileAccess: exclusive, overlay: true I0125 15:21:44.618831 60282 x:0] Network: host, logging: false I0125 15:21:44.618911 60282 x:0] Strace: false, max size: 1024, syscalls: [] I0125 15:21:44.618944 60282 x:0] *************************** D0125 15:21:44.619023 60282 x:0] Load container "/syzkaller/managers/kvm-direct-overlay-host-race/workdir/gvisor_root" "ci-gvisor-kvm-direct-overlay-host-race-2" D0125 15:21:44.622911 60282 x:0] Signal container "ci-gvisor-kvm-direct-overlay-host-race-2": signal 0 D0125 15:21:44.623032 60282 x:0] Signal sandbox "ci-gvisor-kvm-direct-overlay-host-race-2" D0125 15:21:44.623094 60282 x:0] Connecting to sandbox "ci-gvisor-kvm-direct-overlay-host-race-2" D0125 15:21:44.623774 60282 x:0] urpc: successfully marshalled 120 bytes. D0125 15:21:44.624993 60282 x:0] urpc: unmarshal success. I0125 15:21:44.625148 60282 x:0] Found sandbox "ci-gvisor-kvm-direct-overlay-host-race-2", PID: 58949 I0125 15:21:44.625233 60282 x:0] Retrieving sandbox stacks D0125 15:21:44.625256 60282 x:0] Stacks sandbox "ci-gvisor-kvm-direct-overlay-host-race-2" D0125 15:21:44.625308 60282 x:0] Connecting to sandbox "ci-gvisor-kvm-direct-overlay-host-race-2" D0125 15:21:44.625788 60282 x:0] urpc: successfully marshalled 36 bytes. D0125 15:21:44.727471 60282 x:0] urpc: unmarshal success. I0125 15:21:44.727587 60282 x:0] *** Stack dump *** goroutine 5762 [running]: gvisor.googlesource.com/gvisor/pkg/log.Stacks(0x459e01, 0x28, 0x45d3f2, 0x4e466d) pkg/log/log.go:259 +0xd1 gvisor.googlesource.com/gvisor/runsc/boot.(*debug).Stacks(0x22e11f8, 0x22e11f8, 0xc000500310, 0x0, 0x0) runsc/boot/debug.go:26 +0x38 reflect.Value.call(0xc00013ff20, 0xc00013c240, 0x13, 0x10d4223, 0x4, 0xc00095fe68, 0x3, 0x3, 0x4f058e, 0xf8ffe0, ...) GOROOT/src/reflect/value.go:447 +0x635 reflect.Value.Call(0xc00013ff20, 0xc00013c240, 0x13, 0xc00095fe68, 0x3, 0x3, 0x0, 0x22e11f8, 0x16) GOROOT/src/reflect/value.go:308 +0xc1 gvisor.googlesource.com/gvisor/pkg/urpc.(*Server).handleOne(0xc0002a85d0, 0xc0006ca420, 0x0, 0x0) pkg/urpc/urpc.go:298 +0x613 gvisor.googlesource.com/gvisor/pkg/urpc.(*Server).handleRegistered(0xc0002a85d0, 0xc0006ca420, 0xc0002a85d0, 0xc0006ca420) pkg/urpc/urpc.go:393 +0x43 gvisor.googlesource.com/gvisor/pkg/urpc.(*Server).StartHandling.func1(0xc0002a85d0, 0xc0006ca420) 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]: sync.runtime_Semacquire(0xc0002ca264) GOROOT/src/runtime/sema.go:56 +0x39 sync.(*WaitGroup).Wait(0xc0002ca264) GOROOT/src/sync/waitgroup.go:130 +0xb5 gvisor.googlesource.com/gvisor/pkg/sentry/kernel.(*Kernel).WaitExited(0xc0002d0000) pkg/sentry/kernel/kernel.go:801 +0x57 gvisor.googlesource.com/gvisor/runsc/boot.(*Loader).WaitExit(0xc0002d0140, 0x0, 0x0) runsc/boot/loader.go:747 +0x50 gvisor.googlesource.com/gvisor/runsc/cmd.(*Boot).Execute(0xc0001d2120, 0x12192e0, 0xc000138010, 0xc00013eb40, 0xc0001df020, 0x2, 0x2, 0x0) runsc/cmd/boot.go:236 +0x121d github.com/google/subcommands.(*Commander).Execute(0xc00014c000, 0x12192e0, 0xc000138010, 0xc0001df020, 0x2, 0x2, 0x1) external/com_github_google_subcommands/subcommands.go:141 +0x525 github.com/google/subcommands.Execute(0x12192e0, 0xc000138010, 0xc0001df020, 0x2, 0x2, 0xc00012ed40) external/com_github_google_subcommands/subcommands.go:371 +0x81 main.main() runsc/main.go:221 +0x1ef8