panic: runtime error: index out of range

DIAGNOSIS:
I0403 18:51:53.948396   15602 x:0] ***************************
I0403 18:51:53.948444   15602 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-2]
I0403 18:51:53.948455   15602 x:0] Version release-20190304.1-78-gc4caccd54042
I0403 18:51:53.948460   15602 x:0] PID: 15602
I0403 18:51:53.948464   15602 x:0] UID: 0, GID: 0
I0403 18:51:53.948467   15602 x:0] Configuration:
I0403 18:51:53.948470   15602 x:0] 		RootDir: /syzkaller/managers/main/workdir/gvisor_root
I0403 18:51:53.948473   15602 x:0] 		Platform: ptrace
I0403 18:51:53.948492   15602 x:0] 		FileAccess: shared, overlay: false
I0403 18:51:53.948499   15602 x:0] 		Network: none, logging: false
I0403 18:51:53.948505   15602 x:0] 		Strace: false, max size: 1024, syscalls: []
I0403 18:51:53.948508   15602 x:0] ***************************
D0403 18:51:53.948529   15602 x:0] Load container "/syzkaller/managers/main/workdir/gvisor_root" "ci-gvisor-main-2"
D0403 18:51:53.949794   15602 x:0] Signal container "ci-gvisor-main-2": signal 0
D0403 18:51:53.949813   15602 x:0] Signal sandbox "ci-gvisor-main-2"
D0403 18:51:53.949817   15602 x:0] Connecting to sandbox "ci-gvisor-main-2"
D0403 18:51:53.949920   15602 x:0] urpc: successfully marshalled 96 bytes.
I0403 18:51:54.283271   15602 x:0] Found sandbox "ci-gvisor-main-2", PID: 54740
I0403 18:51:54.283286   15602 x:0] Retrieving sandbox stacks
D0403 18:51:54.283302   15602 x:0] Stacks sandbox "ci-gvisor-main-2"
D0403 18:51:54.283306   15602 x:0] Connecting to sandbox "ci-gvisor-main-2"
D0403 18:51:54.283356   15602 x:0] urpc: successfully marshalled 36 bytes.
W0403 18:51:54.340450   15602 x:0] FATAL ERROR: retrieving stacks: getting sandbox "ci-gvisor-main-2" stacks: urpc method "debug.Stacks" failed: connection reset by peer
retrieving stacks: getting sandbox "ci-gvisor-main-2" stacks: urpc method "debug.Stacks" failed: connection reset by peer