panic: runtime error: index out of range

goroutine 199 [running]:
DIAGNOSIS:
I0330 02:09:43.460308    1717 x:0] ***************************
I0330 02:09:43.460371    1717 x:0] Args: [/syzkaller/managers/kvm-direct-sandbox/current/image -root /syzkaller/managers/kvm-direct-sandbox/workdir/gvisor_root -watchdog-action=panic -network=none -debug -platform=kvm -file-access=exclusive -network=sandbox debug -stacks ci-gvisor-kvm-direct-sandbox-0]
I0330 02:09:43.460387    1717 x:0] Git Revision: cc0e96a4bd3348ecc2a636fd90118b8e5cce672c
I0330 02:09:43.460392    1717 x:0] PID: 1717
I0330 02:09:43.460398    1717 x:0] UID: 0, GID: 0
I0330 02:09:43.460401    1717 x:0] Configuration:
I0330 02:09:43.460404    1717 x:0] 		RootDir: /syzkaller/managers/kvm-direct-sandbox/workdir/gvisor_root
I0330 02:09:43.460408    1717 x:0] 		Platform: kvm
I0330 02:09:43.460420    1717 x:0] 		FileAccess: exclusive, overlay: false
I0330 02:09:43.460427    1717 x:0] 		Network: sandbox, logging: false
I0330 02:09:43.460433    1717 x:0] 		Strace: false, max size: 1024, syscalls: []
I0330 02:09:43.460442    1717 x:0] ***************************
D0330 02:09:43.460460    1717 x:0] Load container "/syzkaller/managers/kvm-direct-sandbox/workdir/gvisor_root" "ci-gvisor-kvm-direct-sandbox-0"
D0330 02:09:43.462700    1717 x:0] Signal container "ci-gvisor-kvm-direct-sandbox-0": signal 0
D0330 02:09:43.462725    1717 x:0] Signal sandbox "ci-gvisor-kvm-direct-sandbox-0"
D0330 02:09:43.462735    1717 x:0] Connecting to sandbox "ci-gvisor-kvm-direct-sandbox-0"
D0330 02:09:43.462875    1717 x:0] urpc: successfully marshalled 110 bytes.
I0330 02:09:43.555338    1717 x:0] Found sandbox "ci-gvisor-kvm-direct-sandbox-0", PID: 63473
I0330 02:09:43.555356    1717 x:0] Retrieving sandbox stacks
D0330 02:09:43.555360    1717 x:0] Stacks sandbox "ci-gvisor-kvm-direct-sandbox-0"
D0330 02:09:43.555365    1717 x:0] Connecting to sandbox "ci-gvisor-kvm-direct-sandbox-0"
D0330 02:09:43.555428    1717 x:0] urpc: successfully marshalled 36 bytes.
W0330 02:09:43.563856    1717 x:0] FATAL ERROR: retrieving stacks: getting sandbox "ci-gvisor-kvm-direct-sandbox-0" stacks: urpc method "debug.Stacks" failed: connection reset by peer
retrieving stacks: getting sandbox "ci-gvisor-kvm-direct-sandbox-0" stacks: urpc method "debug.Stacks" failed: connection reset by peer