panic: Stack for running G's are skipped while panicking.
Watchdog goroutine is stuck:


goroutine 196 [running]:
DIAGNOSIS:
I0213 09:01:42.943506   53357 log.go:209] ***************************
I0213 09:01:42.943689   53357 log.go:209] Args: [/syzkaller/managers/ptrace-proxy-sandbox-race/current/image -root /syzkaller/managers/ptrace-proxy-sandbox-race/workdir/gvisor_root -watchdog-action=panic -network=none -debug -alsologtostderr -platform=ptrace -file-access=shared -network=sandbox -TESTONLY-unsafe-nonroot debug -stacks --ps ci-gvisor-ptrace-proxy-sandbox-race-1]
I0213 09:01:42.943906   53357 log.go:209] Version release-20200211.0-8-g46a36b64d516
I0213 09:01:42.944072   53357 log.go:209] PID: 53357
I0213 09:01:42.944194   53357 log.go:209] UID: 0, GID: 0
I0213 09:01:42.944331   53357 log.go:209] Configuration:
I0213 09:01:42.946441   53357 log.go:209] 		RootDir: /syzkaller/managers/ptrace-proxy-sandbox-race/workdir/gvisor_root
I0213 09:01:42.946664   53357 log.go:209] 		Platform: ptrace
I0213 09:01:42.946743   53357 log.go:209] 		FileAccess: shared, overlay: false
I0213 09:01:42.948929   53357 log.go:209] 		Network: sandbox, logging: false
I0213 09:01:42.949045   53357 log.go:209] 		Strace: false, max size: 1024, syscalls: []
I0213 09:01:42.949257   53357 log.go:209] ***************************
W0213 09:01:42.949649   53357 log.go:216] Block the TERM signal. This is only safe in tests!
D0213 09:01:42.952330   53357 log.go:202] Load container "/syzkaller/managers/ptrace-proxy-sandbox-race/workdir/gvisor_root" "ci-gvisor-ptrace-proxy-sandbox-race-1"
D0213 09:01:43.010530   53357 log.go:202] Signal container "ci-gvisor-ptrace-proxy-sandbox-race-1": signal 0
D0213 09:01:43.012126   53357 log.go:202] Signal sandbox "ci-gvisor-ptrace-proxy-sandbox-race-1"
D0213 09:01:43.012257   53357 log.go:202] Connecting to sandbox "ci-gvisor-ptrace-proxy-sandbox-race-1"
D0213 09:01:43.020413   53357 log.go:202] urpc: successfully marshalled 117 bytes.
I0213 09:01:51.121159   53357 log.go:209] Found sandbox "ci-gvisor-ptrace-proxy-sandbox-race-1", PID: 43718
I0213 09:01:51.121300   53357 log.go:209] Retrieving sandbox stacks
D0213 09:01:51.121368   53357 log.go:202] Stacks sandbox "ci-gvisor-ptrace-proxy-sandbox-race-1"
D0213 09:01:51.121493   53357 log.go:202] Connecting to sandbox "ci-gvisor-ptrace-proxy-sandbox-race-1"
D0213 09:01:51.121658   53357 log.go:202] urpc: successfully marshalled 36 bytes.
W0213 09:01:51.257392   53357 log.go:216] FATAL ERROR: retrieving stacks: getting sandbox "ci-gvisor-ptrace-proxy-sandbox-race-1" stacks: urpc method "debug.Stacks" failed: connection reset by peer
retrieving stacks: getting sandbox "ci-gvisor-ptrace-proxy-sandbox-race-1" stacks: urpc method "debug.Stacks" failed: connection reset by peer
W0213 09:01:51.257687   53357 log.go:216] Failure to execute command, err: 1