panic: runtime error: index out of range

goroutine 158 [running]:
DIAGNOSIS:
I0330 00:11:54.216388   41442 x:0] ***************************
I0330 00:11:54.216445   41442 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-2]
I0330 00:11:54.216458   41442 x:0] Git Revision: cc0e96a4bd3348ecc2a636fd90118b8e5cce672c
I0330 00:11:54.216462   41442 x:0] PID: 41442
I0330 00:11:54.216469   41442 x:0] UID: 0, GID: 0
I0330 00:11:54.216473   41442 x:0] Configuration:
I0330 00:11:54.216476   41442 x:0] 		RootDir: /syzkaller/managers/kvm-direct-sandbox/workdir/gvisor_root
I0330 00:11:54.216479   41442 x:0] 		Platform: kvm
I0330 00:11:54.216493   41442 x:0] 		FileAccess: exclusive, overlay: false
I0330 00:11:54.216499   41442 x:0] 		Network: sandbox, logging: false
I0330 00:11:54.216505   41442 x:0] 		Strace: false, max size: 1024, syscalls: []
I0330 00:11:54.216510   41442 x:0] ***************************
D0330 00:11:54.216541   41442 x:0] Load container "/syzkaller/managers/kvm-direct-sandbox/workdir/gvisor_root" "ci-gvisor-kvm-direct-sandbox-2"
D0330 00:11:54.217972   41442 x:0] Signal container "ci-gvisor-kvm-direct-sandbox-2": signal 0
D0330 00:11:54.217991   41442 x:0] Signal sandbox "ci-gvisor-kvm-direct-sandbox-2"
D0330 00:11:54.217996   41442 x:0] Connecting to sandbox "ci-gvisor-kvm-direct-sandbox-2"
D0330 00:11:54.218126   41442 x:0] urpc: successfully marshalled 110 bytes.
I0330 00:11:54.403970   41442 x:0] Found sandbox "ci-gvisor-kvm-direct-sandbox-2", PID: 37841
I0330 00:11:54.403991   41442 x:0] Retrieving sandbox stacks
D0330 00:11:54.403995   41442 x:0] Stacks sandbox "ci-gvisor-kvm-direct-sandbox-2"
D0330 00:11:54.404000   41442 x:0] Connecting to sandbox "ci-gvisor-kvm-direct-sandbox-2"
D0330 00:11:54.404067   41442 x:0] urpc: successfully marshalled 36 bytes.
W0330 00:11:54.418879   41442 x:0] FATAL ERROR: retrieving stacks: getting sandbox "ci-gvisor-kvm-direct-sandbox-2" stacks: urpc method "debug.Stacks" failed: connection reset by peer
retrieving stacks: getting sandbox "ci-gvisor-kvm-direct-sandbox-2" stacks: urpc method "debug.Stacks" failed: connection reset by peer