panic: runtime error: index out of range

goroutine 373 [running]:
DIAGNOSIS:
I0330 02:35:20.120785   43224 x:0] ***************************
I0330 02:35:20.120928   43224 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-3]
I0330 02:35:20.121005   43224 x:0] Git Revision: ed23f547093e705ba3d6f82b2ce49592180f9a5a
I0330 02:35:20.121022   43224 x:0] PID: 43224
I0330 02:35:20.121042   43224 x:0] UID: 0, GID: 0
I0330 02:35:20.121056   43224 x:0] Configuration:
I0330 02:35:20.121067   43224 x:0] 		RootDir: /syzkaller/managers/ptrace-proxy-sandbox-race/workdir/gvisor_root
I0330 02:35:20.121089   43224 x:0] 		Platform: ptrace
I0330 02:35:20.121106   43224 x:0] 		FileAccess: shared, overlay: false
I0330 02:35:20.121125   43224 x:0] 		Network: sandbox, logging: false
I0330 02:35:20.121152   43224 x:0] 		Strace: false, max size: 1024, syscalls: []
I0330 02:35:20.121188   43224 x:0] ***************************
D0330 02:35:20.121253   43224 x:0] Load container "/syzkaller/managers/ptrace-proxy-sandbox-race/workdir/gvisor_root" "ci-gvisor-ptrace-proxy-sandbox-race-3"
D0330 02:35:20.127340   43224 x:0] Signal container "ci-gvisor-ptrace-proxy-sandbox-race-3": signal 0
D0330 02:35:20.127420   43224 x:0] Signal sandbox "ci-gvisor-ptrace-proxy-sandbox-race-3"
D0330 02:35:20.127478   43224 x:0] Connecting to sandbox "ci-gvisor-ptrace-proxy-sandbox-race-3"
D0330 02:35:20.127849   43224 x:0] urpc: successfully marshalled 117 bytes.
I0330 02:35:20.259497   43224 x:0] Found sandbox "ci-gvisor-ptrace-proxy-sandbox-race-3", PID: 34654
I0330 02:35:20.259564   43224 x:0] Retrieving sandbox stacks
D0330 02:35:20.259588   43224 x:0] Stacks sandbox "ci-gvisor-ptrace-proxy-sandbox-race-3"
D0330 02:35:20.259636   43224 x:0] Connecting to sandbox "ci-gvisor-ptrace-proxy-sandbox-race-3"
D0330 02:35:20.259761   43224 x:0] urpc: successfully marshalled 36 bytes.
W0330 02:35:20.267458   43224 x:0] FATAL ERROR: retrieving stacks: getting sandbox "ci-gvisor-ptrace-proxy-sandbox-race-3" stacks: urpc method "debug.Stacks" failed: connection reset by peer
retrieving stacks: getting sandbox "ci-gvisor-ptrace-proxy-sandbox-race-3" stacks: urpc method "debug.Stacks" failed: connection reset by peer