panic: runtime error: index out of range

goroutine 299 [running]:
DIAGNOSIS:
I0329 23:31:51.026394   57585 x:0] ***************************
I0329 23:31:51.026513   57585 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]
I0329 23:31:51.026580   57585 x:0] Git Revision: ed23f547093e705ba3d6f82b2ce49592180f9a5a
I0329 23:31:51.026611   57585 x:0] PID: 57585
I0329 23:31:51.026632   57585 x:0] UID: 0, GID: 0
I0329 23:31:51.026654   57585 x:0] Configuration:
I0329 23:31:51.026676   57585 x:0] 		RootDir: /syzkaller/managers/ptrace-proxy-sandbox-race/workdir/gvisor_root
I0329 23:31:51.026692   57585 x:0] 		Platform: ptrace
I0329 23:31:51.026712   57585 x:0] 		FileAccess: shared, overlay: false
I0329 23:31:51.026737   57585 x:0] 		Network: sandbox, logging: false
I0329 23:31:51.026769   57585 x:0] 		Strace: false, max size: 1024, syscalls: []
I0329 23:31:51.026804   57585 x:0] ***************************
D0329 23:31:51.026862   57585 x:0] Load container "/syzkaller/managers/ptrace-proxy-sandbox-race/workdir/gvisor_root" "ci-gvisor-ptrace-proxy-sandbox-race-1"
D0329 23:31:51.032684   57585 x:0] Signal container "ci-gvisor-ptrace-proxy-sandbox-race-1": signal 0
D0329 23:31:51.032761   57585 x:0] Signal sandbox "ci-gvisor-ptrace-proxy-sandbox-race-1"
D0329 23:31:51.032798   57585 x:0] Connecting to sandbox "ci-gvisor-ptrace-proxy-sandbox-race-1"
D0329 23:31:51.033341   57585 x:0] urpc: successfully marshalled 117 bytes.
I0329 23:31:51.143338   57585 x:0] Found sandbox "ci-gvisor-ptrace-proxy-sandbox-race-1", PID: 53330
I0329 23:31:51.143421   57585 x:0] Retrieving sandbox stacks
D0329 23:31:51.143441   57585 x:0] Stacks sandbox "ci-gvisor-ptrace-proxy-sandbox-race-1"
D0329 23:31:51.143486   57585 x:0] Connecting to sandbox "ci-gvisor-ptrace-proxy-sandbox-race-1"
D0329 23:31:51.143673   57585 x:0] urpc: successfully marshalled 36 bytes.
W0329 23:31:51.150731   57585 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