panic: runtime error: index out of range

goroutine 29850 [running]:
DIAGNOSIS:
I0403 14:10:03.496248   24340 x:0] ***************************
I0403 14:10:03.496301   24340 x:0] Args: [/syzkaller/managers/main/current/image -root /syzkaller/managers/main/workdir/gvisor_root -watchdog-action=panic -network=none -debug -platform=ptrace -file-access=shared -network=none debug -stacks ci-gvisor-main-1]
I0403 14:10:03.496311   24340 x:0] Version release-20190304.1-78-gc4caccd54042
I0403 14:10:03.496320   24340 x:0] PID: 24340
I0403 14:10:03.496327   24340 x:0] UID: 0, GID: 0
I0403 14:10:03.496330   24340 x:0] Configuration:
I0403 14:10:03.496332   24340 x:0] 		RootDir: /syzkaller/managers/main/workdir/gvisor_root
I0403 14:10:03.496341   24340 x:0] 		Platform: ptrace
I0403 14:10:03.496353   24340 x:0] 		FileAccess: shared, overlay: false
I0403 14:10:03.496371   24340 x:0] 		Network: none, logging: false
I0403 14:10:03.496376   24340 x:0] 		Strace: false, max size: 1024, syscalls: []
I0403 14:10:03.496379   24340 x:0] ***************************
D0403 14:10:03.496393   24340 x:0] Load container "/syzkaller/managers/main/workdir/gvisor_root" "ci-gvisor-main-1"
D0403 14:10:03.497865   24340 x:0] Signal container "ci-gvisor-main-1": signal 0
D0403 14:10:03.497934   24340 x:0] Signal sandbox "ci-gvisor-main-1"
D0403 14:10:03.497963   24340 x:0] Connecting to sandbox "ci-gvisor-main-1"
D0403 14:10:03.498260   24340 x:0] urpc: successfully marshalled 96 bytes.
I0403 14:10:03.807295   24340 x:0] Found sandbox "ci-gvisor-main-1", PID: 22409
I0403 14:10:03.807313   24340 x:0] Retrieving sandbox stacks
D0403 14:10:03.807317   24340 x:0] Stacks sandbox "ci-gvisor-main-1"
D0403 14:10:03.807322   24340 x:0] Connecting to sandbox "ci-gvisor-main-1"
D0403 14:10:03.807392   24340 x:0] urpc: successfully marshalled 36 bytes.
W0403 14:10:03.841068   24340 x:0] FATAL ERROR: retrieving stacks: getting sandbox "ci-gvisor-main-1" stacks: urpc method "debug.Stacks" failed: connection reset by peer
retrieving stacks: getting sandbox "ci-gvisor-main-1" stacks: urpc method "debug.Stacks" failed: connection reset by peer