panic: runtime error: index out of range
DIAGNOSIS:
I0404 07:22:46.444870    4985 x:0] ***************************
I0404 07:22:46.444912    4985 x:0] Args: [/syzkaller/managers/kvm-direct-sandbox/current/image -root /syzkaller/managers/kvm-direct-sandbox/workdir/gvisor_root -watchdog-action=panic -network=none -debug -platform=kvm -file-access=exclusive -network=sandbox debug -stacks ci-gvisor-kvm-direct-sandbox-0]
I0404 07:22:46.444923    4985 x:0] Version release-20190304.1-70-g1df3fa699774
I0404 07:22:46.444927    4985 x:0] PID: 4985
I0404 07:22:46.444938    4985 x:0] UID: 0, GID: 0
I0404 07:22:46.444941    4985 x:0] Configuration:
I0404 07:22:46.444944    4985 x:0] 		RootDir: /syzkaller/managers/kvm-direct-sandbox/workdir/gvisor_root
I0404 07:22:46.444952    4985 x:0] 		Platform: kvm
I0404 07:22:46.444965    4985 x:0] 		FileAccess: exclusive, overlay: false
I0404 07:22:46.444970    4985 x:0] 		Network: sandbox, logging: false
I0404 07:22:46.444978    4985 x:0] 		Strace: false, max size: 1024, syscalls: []
I0404 07:22:46.444982    4985 x:0] ***************************
D0404 07:22:46.444997    4985 x:0] Load container "/syzkaller/managers/kvm-direct-sandbox/workdir/gvisor_root" "ci-gvisor-kvm-direct-sandbox-0"
D0404 07:22:46.446195    4985 x:0] Signal container "ci-gvisor-kvm-direct-sandbox-0": signal 0
D0404 07:22:46.446227    4985 x:0] Signal sandbox "ci-gvisor-kvm-direct-sandbox-0"
D0404 07:22:46.446232    4985 x:0] Connecting to sandbox "ci-gvisor-kvm-direct-sandbox-0"
D0404 07:22:46.446393    4985 x:0] urpc: successfully marshalled 110 bytes.
I0404 07:22:46.696267    4985 x:0] Found sandbox "ci-gvisor-kvm-direct-sandbox-0", PID: 41352
I0404 07:22:46.696289    4985 x:0] Retrieving sandbox stacks
D0404 07:22:46.696294    4985 x:0] Stacks sandbox "ci-gvisor-kvm-direct-sandbox-0"
D0404 07:22:46.696298    4985 x:0] Connecting to sandbox "ci-gvisor-kvm-direct-sandbox-0"
D0404 07:22:46.696382    4985 x:0] urpc: successfully marshalled 36 bytes.
W0404 07:22:46.735080    4985 x:0] FATAL ERROR: retrieving stacks: getting sandbox "ci-gvisor-kvm-direct-sandbox-0" stacks: urpc method "debug.Stacks" failed: connection reset by peer
retrieving stacks: getting sandbox "ci-gvisor-kvm-direct-sandbox-0" stacks: urpc method "debug.Stacks" failed: connection reset by peer