panic: runtime error: index out of range

goroutine 6884 [running]:
DIAGNOSIS:
I0330 02:46:04.798986   21356 x:0] ***************************
I0330 02:46:04.799039   21356 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-1]
I0330 02:46:04.799053   21356 x:0] Git Revision: cc0e96a4bd3348ecc2a636fd90118b8e5cce672c
I0330 02:46:04.799058   21356 x:0] PID: 21356
I0330 02:46:04.799063   21356 x:0] UID: 0, GID: 0
I0330 02:46:04.799066   21356 x:0] Configuration:
I0330 02:46:04.799069   21356 x:0] 		RootDir: /syzkaller/managers/kvm-direct-sandbox/workdir/gvisor_root
I0330 02:46:04.799077   21356 x:0] 		Platform: kvm
I0330 02:46:04.799099   21356 x:0] 		FileAccess: exclusive, overlay: false
I0330 02:46:04.799106   21356 x:0] 		Network: sandbox, logging: false
I0330 02:46:04.799111   21356 x:0] 		Strace: false, max size: 1024, syscalls: []
I0330 02:46:04.799115   21356 x:0] ***************************
D0330 02:46:04.799129   21356 x:0] Load container "/syzkaller/managers/kvm-direct-sandbox/workdir/gvisor_root" "ci-gvisor-kvm-direct-sandbox-1"
D0330 02:46:04.800571   21356 x:0] Signal container "ci-gvisor-kvm-direct-sandbox-1": signal 0
D0330 02:46:04.800589   21356 x:0] Signal sandbox "ci-gvisor-kvm-direct-sandbox-1"
D0330 02:46:04.800594   21356 x:0] Connecting to sandbox "ci-gvisor-kvm-direct-sandbox-1"
D0330 02:46:04.800708   21356 x:0] urpc: successfully marshalled 110 bytes.
I0330 02:46:05.287230   21356 x:0] Found sandbox "ci-gvisor-kvm-direct-sandbox-1", PID: 2856
I0330 02:46:05.287255   21356 x:0] Retrieving sandbox stacks
D0330 02:46:05.287260   21356 x:0] Stacks sandbox "ci-gvisor-kvm-direct-sandbox-1"
D0330 02:46:05.287265   21356 x:0] Connecting to sandbox "ci-gvisor-kvm-direct-sandbox-1"
D0330 02:46:05.287334   21356 x:0] urpc: successfully marshalled 36 bytes.
W0330 02:46:05.300253   21356 x:0] FATAL ERROR: retrieving stacks: getting sandbox "ci-gvisor-kvm-direct-sandbox-1" stacks: urpc method "debug.Stacks" failed: connection reset by peer
retrieving stacks: getting sandbox "ci-gvisor-kvm-direct-sandbox-1" stacks: urpc method "debug.Stacks" failed: connection reset by peer