panic: runtime error: index out of range [1] with length 0
DIAGNOSIS:
I0304 01:25:40.515875   55283 main.go:296] ***************************
I0304 01:25:40.515960   55283 main.go:297] Args: [/syzkaller/managers/kvm-direct-sandbox/current/image -root /syzkaller/managers/kvm-direct-sandbox/workdir/gvisor_root -watchdog-action=panic -network=none -debug -alsologtostderr -platform=kvm -file-access=exclusive -network=sandbox debug -stacks --ps ci-gvisor-kvm-direct-sandbox-3]
I0304 01:25:40.516010   55283 main.go:298] Version release-20200219.0-52-gabf7ebcd38e8
I0304 01:25:40.516046   55283 main.go:299] PID: 55283
I0304 01:25:40.516073   55283 main.go:300] UID: 0, GID: 0
I0304 01:25:40.516093   55283 main.go:301] Configuration:
I0304 01:25:40.516117   55283 main.go:302] 		RootDir: /syzkaller/managers/kvm-direct-sandbox/workdir/gvisor_root
I0304 01:25:40.516142   55283 main.go:303] 		Platform: kvm
I0304 01:25:40.516162   55283 main.go:304] 		FileAccess: exclusive, overlay: false
I0304 01:25:40.516194   55283 main.go:305] 		Network: sandbox, logging: false
I0304 01:25:40.516217   55283 main.go:306] 		Strace: false, max size: 1024, syscalls: []
I0304 01:25:40.516239   55283 main.go:307] ***************************
D0304 01:25:40.516294   55283 container.go:158] Load container "/syzkaller/managers/kvm-direct-sandbox/workdir/gvisor_root" "ci-gvisor-kvm-direct-sandbox-3"
D0304 01:25:40.517843   55283 container.go:591] Signal container "ci-gvisor-kvm-direct-sandbox-3": signal 0
D0304 01:25:40.517877   55283 sandbox.go:788] Signal sandbox "ci-gvisor-kvm-direct-sandbox-3"
D0304 01:25:40.517897   55283 sandbox.go:318] Connecting to sandbox "ci-gvisor-kvm-direct-sandbox-3"
D0304 01:25:40.518184   55283 urpc.go:534] urpc: successfully marshalled 110 bytes.
I0304 01:25:41.048450   55283 debug.go:122] Found sandbox "ci-gvisor-kvm-direct-sandbox-3", PID: 48699
I0304 01:25:41.048511   55283 debug.go:131] Retrieving sandbox stacks
D0304 01:25:41.048551   55283 sandbox.go:906] Stacks sandbox "ci-gvisor-kvm-direct-sandbox-3"
D0304 01:25:41.048566   55283 sandbox.go:318] Connecting to sandbox "ci-gvisor-kvm-direct-sandbox-3"
D0304 01:25:41.048636   55283 urpc.go:534] urpc: successfully marshalled 36 bytes.
W0304 01:25:41.123422   55283 error.go:48] FATAL ERROR: retrieving stacks: getting sandbox "ci-gvisor-kvm-direct-sandbox-3" stacks: urpc method "debug.Stacks" failed: connection reset by peer
retrieving stacks: getting sandbox "ci-gvisor-kvm-direct-sandbox-3" stacks: urpc method "debug.Stacks" failed: connection reset by peer
W0304 01:25:41.123558   55283 main.go:329] Failure to execute command, err: 1