panic: Sentry detected stuck task(s). See stack trace and message above for more details goroutine 77 [running]: DIAGNOSIS: Error collecting stacks: failed to run ["/syzkaller/managers/kvm-direct-sandbox/current/image" "-root" "/syzkaller/managers/kvm-direct-sandbox/workdir/gvisor_root" "-watchdog-action=panic" "-network=none" "-debug" "-platform=kvm" "-file-access=exclusive" "-network=sandbox" "debug" "-stacks" "ci-gvisor-kvm-direct-sandbox-0"]: exit status 128 I0220 14:28:19.966238 8400 x:0] *************************** I0220 14:28:19.966288 8400 x:0] Args: [/syzkaller/managers/kvm-direct-sandbox/current/image -root /syzkaller/managers/kvm-direct-sandbox/workdir/gvisor_root -watchdog-action=panic -network=none -debug -platform=kvm -file-access=exclusive -network=sandbox debug -stacks ci-gvisor-kvm-direct-sandbox-0] I0220 14:28:19.966304 8400 x:0] Git Revision: 3e3a1ef9d61fccf6d0d9a52f4e885a6e07a07609 I0220 14:28:19.966309 8400 x:0] PID: 8400 I0220 14:28:19.966315 8400 x:0] UID: 0, GID: 0 I0220 14:28:19.966318 8400 x:0] Configuration: I0220 14:28:19.966321 8400 x:0] RootDir: /syzkaller/managers/kvm-direct-sandbox/workdir/gvisor_root I0220 14:28:19.966324 8400 x:0] Platform: kvm I0220 14:28:19.966366 8400 x:0] FileAccess: exclusive, overlay: false I0220 14:28:19.966378 8400 x:0] Network: sandbox, logging: false I0220 14:28:19.966392 8400 x:0] Strace: false, max size: 1024, syscalls: [] I0220 14:28:19.966397 8400 x:0] *************************** D0220 14:28:19.966427 8400 x:0] Load container "/syzkaller/managers/kvm-direct-sandbox/workdir/gvisor_root" "ci-gvisor-kvm-direct-sandbox-0" D0220 14:28:19.967107 8400 x:0] Signal container "ci-gvisor-kvm-direct-sandbox-0": signal 0 D0220 14:28:19.967126 8400 x:0] Signal sandbox "ci-gvisor-kvm-direct-sandbox-0" D0220 14:28:19.967131 8400 x:0] Connecting to sandbox "ci-gvisor-kvm-direct-sandbox-0" D0220 14:28:19.967268 8400 x:0] urpc: successfully marshalled 110 bytes. I0220 14:28:20.342682 8400 x:0] Found sandbox "ci-gvisor-kvm-direct-sandbox-0", PID: 15620 I0220 14:28:20.342722 8400 x:0] Retrieving sandbox stacks D0220 14:28:20.342726 8400 x:0] Stacks sandbox "ci-gvisor-kvm-direct-sandbox-0" D0220 14:28:20.342731 8400 x:0] Connecting to sandbox "ci-gvisor-kvm-direct-sandbox-0" D0220 14:28:20.342808 8400 x:0] urpc: successfully marshalled 36 bytes. W0220 14:28:20.353551 8400 x:0] FATAL ERROR: retrieving stacks: getting sandbox "ci-gvisor-kvm-direct-sandbox-0" stacks: urpc method "debug.Stacks" failed: connection reset by peer retrieving stacks: getting sandbox "ci-gvisor-kvm-direct-sandbox-0" stacks: urpc method "debug.Stacks" failed: connection reset by peer gvisor.googlesource.com/gvisor/pkg/sentry/watchdog.(*Watchdog).onStuckTask(0xc00014b810, 0xc8fe01, 0xc00072e070) pkg/sentry/watchdog/watchdog.go:303 +0x3ba gvisor.googlesource.com/gvisor/pkg/sentry/watchdog.(*Watchdog).reportStuckWatchdog(0xc00014b810) pkg/sentry/watchdog/watchdog.go:271 +0x72 gvisor.googlesource.com/gvisor/pkg/sentry/watchdog.(*Watchdog).runTurn(0xc00014b810) pkg/sentry/watchdog/watchdog.go:208 +0x544 gvisor.googlesource.com/gvisor/pkg/sentry/watchdog.(*Watchdog).loop(0xc00014b810) pkg/sentry/watchdog/watchdog.go:186 +0x42 created by gvisor.googlesource.com/gvisor/pkg/sentry/watchdog.(*Watchdog).Start pkg/sentry/watchdog/watchdog.go:155 +0x1d6