panic: Stack for running G's are skipped while panicking. Sentry detected 1 stuck task(s): Task tid: 7125 (0x1bd5), entered RunSys state 3m12.34s ago. Search for '(*Task).run(0x..., 0x)' in the stack dump to find the offending goroutine goroutine 45 [running]: DIAGNOSIS: I0304 15:40:11.368646 7358 main.go:305] *************************** I0304 15:40:11.368777 7358 main.go:306] Args: [/syzkaller/managers/ptrace-direct-overlay-host-race/current/image -root /syzkaller/managers/ptrace-direct-overlay-host-race/workdir/gvisor_root -watchdog-action=panic -network=none -debug -alsologtostderr -platform=ptrace -file-access=exclusive -overlay -network=host -TESTONLY-unsafe-nonroot debug -stacks --ps ci-gvisor-ptrace-direct-overlay-host-race-2] I0304 15:40:11.368974 7358 main.go:307] Version release-20200219.0-72-gce4d1e45bb88 I0304 15:40:11.369068 7358 main.go:308] PID: 7358 I0304 15:40:11.369222 7358 main.go:309] UID: 0, GID: 0 I0304 15:40:11.369318 7358 main.go:310] Configuration: I0304 15:40:11.369414 7358 main.go:311] RootDir: /syzkaller/managers/ptrace-direct-overlay-host-race/workdir/gvisor_root I0304 15:40:11.369502 7358 main.go:312] Platform: ptrace I0304 15:40:11.369574 7358 main.go:313] FileAccess: exclusive, overlay: true I0304 15:40:11.369692 7358 main.go:314] Network: host, logging: false I0304 15:40:11.369794 7358 main.go:315] Strace: false, max size: 1024, syscalls: [] I0304 15:40:11.369913 7358 main.go:316] *************************** W0304 15:40:11.370003 7358 main.go:321] Block the TERM signal. This is only safe in tests! D0304 15:40:11.370280 7358 container.go:159] Load container "/syzkaller/managers/ptrace-direct-overlay-host-race/workdir/gvisor_root" "ci-gvisor-ptrace-direct-overlay-host-race-2" D0304 15:40:11.378225 7358 container.go:592] Signal container "ci-gvisor-ptrace-direct-overlay-host-race-2": signal 0 D0304 15:40:11.378477 7358 sandbox.go:806] Signal sandbox "ci-gvisor-ptrace-direct-overlay-host-race-2" D0304 15:40:11.378585 7358 sandbox.go:318] Connecting to sandbox "ci-gvisor-ptrace-direct-overlay-host-race-2" D0304 15:40:11.379107 7358 urpc.go:534] urpc: successfully marshalled 123 bytes. I0304 15:40:17.560260 7358 debug.go:122] Found sandbox "ci-gvisor-ptrace-direct-overlay-host-race-2", PID: 40417 I0304 15:40:17.560465 7358 debug.go:131] Retrieving sandbox stacks D0304 15:40:17.560608 7358 sandbox.go:924] Stacks sandbox "ci-gvisor-ptrace-direct-overlay-host-race-2" D0304 15:40:17.560866 7358 sandbox.go:318] Connecting to sandbox "ci-gvisor-ptrace-direct-overlay-host-race-2" W0304 15:40:17.561086 7358 error.go:48] FATAL ERROR: retrieving stacks: connecting to control server at PID 40417: connection refused retrieving stacks: connecting to control server at PID 40417: connection refused W0304 15:40:17.561503 7358 main.go:338] Failure to execute command, err: 1