panic: runtime error: index out of range

DIAGNOSIS:
I0330 01:06:27.077797   60276 x:0] ***************************
I0330 01:06:27.077919   60276 x:0] Args: [/syzkaller/managers/ptrace-proxy-sandbox-race/current/image -root /syzkaller/managers/ptrace-proxy-sandbox-race/workdir/gvisor_root -watchdog-action=panic -network=none -debug -platform=ptrace -file-access=shared -network=sandbox debug -stacks ci-gvisor-ptrace-proxy-sandbox-race-1]
I0330 01:06:27.077974   60276 x:0] Git Revision: ed23f547093e705ba3d6f82b2ce49592180f9a5a
I0330 01:06:27.077993   60276 x:0] PID: 60276
I0330 01:06:27.078007   60276 x:0] UID: 0, GID: 0
I0330 01:06:27.078024   60276 x:0] Configuration:
I0330 01:06:27.078048   60276 x:0] 		RootDir: /syzkaller/managers/ptrace-proxy-sandbox-race/workdir/gvisor_root
I0330 01:06:27.078066   60276 x:0] 		Platform: ptrace
I0330 01:06:27.078089   60276 x:0] 		FileAccess: shared, overlay: false
I0330 01:06:27.078121   60276 x:0] 		Network: sandbox, logging: false
I0330 01:06:27.078151   60276 x:0] 		Strace: false, max size: 1024, syscalls: []
I0330 01:06:27.078184   60276 x:0] ***************************
D0330 01:06:27.078613   60276 x:0] Load container "/syzkaller/managers/ptrace-proxy-sandbox-race/workdir/gvisor_root" "ci-gvisor-ptrace-proxy-sandbox-race-1"
D0330 01:06:27.084611   60276 x:0] Signal container "ci-gvisor-ptrace-proxy-sandbox-race-1": signal 0
D0330 01:06:27.084678   60276 x:0] Signal sandbox "ci-gvisor-ptrace-proxy-sandbox-race-1"
D0330 01:06:27.084700   60276 x:0] Connecting to sandbox "ci-gvisor-ptrace-proxy-sandbox-race-1"
D0330 01:06:27.085069   60276 x:0] urpc: successfully marshalled 117 bytes.
I0330 01:06:27.315412   60276 x:0] Found sandbox "ci-gvisor-ptrace-proxy-sandbox-race-1", PID: 44615
I0330 01:06:27.315487   60276 x:0] Retrieving sandbox stacks
D0330 01:06:27.315518   60276 x:0] Stacks sandbox "ci-gvisor-ptrace-proxy-sandbox-race-1"
D0330 01:06:27.315555   60276 x:0] Connecting to sandbox "ci-gvisor-ptrace-proxy-sandbox-race-1"
D0330 01:06:27.315709   60276 x:0] urpc: successfully marshalled 36 bytes.
W0330 01:06:27.323849   60276 x:0] FATAL ERROR: retrieving stacks: getting sandbox "ci-gvisor-ptrace-proxy-sandbox-race-1" stacks: urpc method "debug.Stacks" failed: connection reset by peer
retrieving stacks: getting sandbox "ci-gvisor-ptrace-proxy-sandbox-race-1" stacks: urpc method "debug.Stacks" failed: connection reset by peer