panic: Sentry detected 1 stuck task(s):
	Task tid: 36690 (0x8f52), entered RunSys state 3m0.93s ago.
Search for '(*Task).run(0x..., 0x<tid>)' in the stack dump to find the offending goroutine
Stack for running G's are skipped while panicking.

DIAGNOSIS:
I0306 19:53:59.531715    4284 main.go:305] ***************************
I0306 19:53:59.531945    4284 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-0]
I0306 19:53:59.532215    4284 main.go:307] Version release-20200219.0-105-gb1576e533223
I0306 19:53:59.532329    4284 main.go:308] PID: 4284
I0306 19:53:59.532451    4284 main.go:309] UID: 0, GID: 0
I0306 19:53:59.532540    4284 main.go:310] Configuration:
I0306 19:53:59.532645    4284 main.go:311] 		RootDir: /syzkaller/managers/ptrace-direct-overlay-host-race/workdir/gvisor_root
I0306 19:53:59.532753    4284 main.go:312] 		Platform: ptrace
I0306 19:53:59.532864    4284 main.go:313] 		FileAccess: exclusive, overlay: true
I0306 19:53:59.533009    4284 main.go:314] 		Network: host, logging: false
I0306 19:53:59.533148    4284 main.go:315] 		Strace: false, max size: 1024, syscalls: []
I0306 19:53:59.533265    4284 main.go:316] ***************************
W0306 19:53:59.533374    4284 main.go:321] Block the TERM signal. This is only safe in tests!
D0306 19:53:59.533965    4284 container.go:159] Load container "/syzkaller/managers/ptrace-direct-overlay-host-race/workdir/gvisor_root" "ci-gvisor-ptrace-direct-overlay-host-race-0"
D0306 19:53:59.544706    4284 container.go:592] Signal container "ci-gvisor-ptrace-direct-overlay-host-race-0": signal 0
D0306 19:53:59.544939    4284 sandbox.go:806] Signal sandbox "ci-gvisor-ptrace-direct-overlay-host-race-0"
D0306 19:53:59.545100    4284 sandbox.go:318] Connecting to sandbox "ci-gvisor-ptrace-direct-overlay-host-race-0"
D0306 19:53:59.545846    4284 urpc.go:534] urpc: successfully marshalled 123 bytes.
I0306 19:54:04.186496    4284 debug.go:122] Found sandbox "ci-gvisor-ptrace-direct-overlay-host-race-0", PID: 29754
I0306 19:54:04.186816    4284 debug.go:131] Retrieving sandbox stacks
D0306 19:54:04.187066    4284 sandbox.go:924] Stacks sandbox "ci-gvisor-ptrace-direct-overlay-host-race-0"
D0306 19:54:04.187213    4284 sandbox.go:318] Connecting to sandbox "ci-gvisor-ptrace-direct-overlay-host-race-0"
W0306 19:54:04.187501    4284 error.go:48] FATAL ERROR: retrieving stacks: connecting to control server at PID 29754: connection refused
retrieving stacks: connecting to control server at PID 29754: connection refused
W0306 19:54:04.188001    4284 main.go:338] Failure to execute command, err: 1