panic: runtime error: index out of range

goroutine 967201 [running]:
DIAGNOSIS:
I0403 15:55:04.524117   26431 x:0] ***************************
I0403 15:55:04.525681   26431 x:0] Args: [/syzkaller/managers/kvm-direct-overlay-host-race/current/image -root /syzkaller/managers/kvm-direct-overlay-host-race/workdir/gvisor_root -watchdog-action=panic -network=none -debug -platform=ptrace -file-access=exclusive -overlay -network=host debug -stacks ci-gvisor-kvm-direct-overlay-host-race-0]
I0403 15:55:04.525736   26431 x:0] Version release-20190304.1-78-gc4caccd54042
I0403 15:55:04.525751   26431 x:0] PID: 26431
I0403 15:55:04.525770   26431 x:0] UID: 0, GID: 0
I0403 15:55:04.525785   26431 x:0] Configuration:
I0403 15:55:04.525796   26431 x:0] 		RootDir: /syzkaller/managers/kvm-direct-overlay-host-race/workdir/gvisor_root
I0403 15:55:04.525808   26431 x:0] 		Platform: ptrace
I0403 15:55:04.526257   26431 x:0] 		FileAccess: exclusive, overlay: true
I0403 15:55:04.526299   26431 x:0] 		Network: host, logging: false
I0403 15:55:04.526328   26431 x:0] 		Strace: false, max size: 1024, syscalls: []
I0403 15:55:04.526355   26431 x:0] ***************************
D0403 15:55:04.529755   26431 x:0] Load container "/syzkaller/managers/kvm-direct-overlay-host-race/workdir/gvisor_root" "ci-gvisor-kvm-direct-overlay-host-race-0"
D0403 15:55:04.561087   26431 x:0] Signal container "ci-gvisor-kvm-direct-overlay-host-race-0": signal 0
D0403 15:55:04.561783   26431 x:0] Signal sandbox "ci-gvisor-kvm-direct-overlay-host-race-0"
D0403 15:55:04.561822   26431 x:0] Connecting to sandbox "ci-gvisor-kvm-direct-overlay-host-race-0"
D0403 15:55:04.573381   26431 x:0] urpc: successfully marshalled 120 bytes.
I0403 15:55:05.005952   26431 x:0] Found sandbox "ci-gvisor-kvm-direct-overlay-host-race-0", PID: 58491
I0403 15:55:05.006021   26431 x:0] Retrieving sandbox stacks
D0403 15:55:05.006829   26431 x:0] Stacks sandbox "ci-gvisor-kvm-direct-overlay-host-race-0"
D0403 15:55:05.006927   26431 x:0] Connecting to sandbox "ci-gvisor-kvm-direct-overlay-host-race-0"
D0403 15:55:05.007061   26431 x:0] urpc: successfully marshalled 36 bytes.
W0403 15:55:05.074210   26431 x:0] FATAL ERROR: retrieving stacks: getting sandbox "ci-gvisor-kvm-direct-overlay-host-race-0" stacks: urpc method "debug.Stacks" failed: connection reset by peer
retrieving stacks: getting sandbox "ci-gvisor-kvm-direct-overlay-host-race-0" stacks: urpc method "debug.Stacks" failed: connection reset by peer