panic: runtime error: index out of range

goroutine 506522 [running]:
DIAGNOSIS:
I0403 20:37:15.742931    6575 x:0] ***************************
I0403 20:37:15.742994    6575 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 20:37:15.743010    6575 x:0] Version release-20190304.1-78-gc4caccd54042
I0403 20:37:15.743015    6575 x:0] PID: 6575
I0403 20:37:15.743020    6575 x:0] UID: 0, GID: 0
I0403 20:37:15.743024    6575 x:0] Configuration:
I0403 20:37:15.743031    6575 x:0] 		RootDir: /syzkaller/managers/main/workdir/gvisor_root
I0403 20:37:15.743038    6575 x:0] 		Platform: ptrace
I0403 20:37:15.743044    6575 x:0] 		FileAccess: shared, overlay: false
I0403 20:37:15.743058    6575 x:0] 		Network: none, logging: false
I0403 20:37:15.743064    6575 x:0] 		Strace: false, max size: 1024, syscalls: []
I0403 20:37:15.743068    6575 x:0] ***************************
D0403 20:37:15.743093    6575 x:0] Load container "/syzkaller/managers/main/workdir/gvisor_root" "ci-gvisor-main-1"
D0403 20:37:15.749704    6575 x:0] Signal container "ci-gvisor-main-1": signal 0
D0403 20:37:15.749725    6575 x:0] Signal sandbox "ci-gvisor-main-1"
D0403 20:37:15.749730    6575 x:0] Connecting to sandbox "ci-gvisor-main-1"
D0403 20:37:15.749960    6575 x:0] urpc: successfully marshalled 96 bytes.
I0403 20:37:16.063207    6575 x:0] Found sandbox "ci-gvisor-main-1", PID: 60028
I0403 20:37:16.063231    6575 x:0] Retrieving sandbox stacks
D0403 20:37:16.063236    6575 x:0] Stacks sandbox "ci-gvisor-main-1"
D0403 20:37:16.063240    6575 x:0] Connecting to sandbox "ci-gvisor-main-1"
D0403 20:37:16.063305    6575 x:0] urpc: successfully marshalled 36 bytes.
W0403 20:37:16.101037    6575 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