panic: invalid allocation length: 0x0

goroutine 245 [running]:
DIAGNOSIS:
I0121 06:16:57.305159   40867 x:0] ***************************
I0121 06:16:57.305244   40867 x:0] Args: [/syzkaller/managers/ptrace-direct-overlay-host-race/current/image -root /syzkaller/managers/ptrace-direct-overlay-host-race/workdir/gvisor_root -watchdog-action=panic -network=none -debug -alsologtostderr -platform=ptrace -file-access=exclusive -overlay -network=host -TESTONLY-unsafe-nonroot debug -stacks --ps ci-gvisor-ptrace-direct-overlay-host-race-0]
I0121 06:16:57.305927   40867 x:0] Version release-20200115.0-34-g10401599e104
I0121 06:16:57.306001   40867 x:0] PID: 40867
I0121 06:16:57.306051   40867 x:0] UID: 0, GID: 0
I0121 06:16:57.306099   40867 x:0] Configuration:
I0121 06:16:57.306124   40867 x:0] 		RootDir: /syzkaller/managers/ptrace-direct-overlay-host-race/workdir/gvisor_root
I0121 06:16:57.306181   40867 x:0] 		Platform: ptrace
I0121 06:16:57.306214   40867 x:0] 		FileAccess: exclusive, overlay: true
I0121 06:16:57.306310   40867 x:0] 		Network: host, logging: false
I0121 06:16:57.306353   40867 x:0] 		Strace: false, max size: 1024, syscalls: []
I0121 06:16:57.306394   40867 x:0] ***************************
W0121 06:16:57.306441   40867 x:0] Block the TERM signal. This is only safe in tests!
D0121 06:16:57.306576   40867 x:0] Load container "/syzkaller/managers/ptrace-direct-overlay-host-race/workdir/gvisor_root" "ci-gvisor-ptrace-direct-overlay-host-race-0"
D0121 06:16:57.314070   40867 x:0] Signal container "ci-gvisor-ptrace-direct-overlay-host-race-0": signal 0
D0121 06:16:57.314200   40867 x:0] Signal sandbox "ci-gvisor-ptrace-direct-overlay-host-race-0"
D0121 06:16:57.314288   40867 x:0] Connecting to sandbox "ci-gvisor-ptrace-direct-overlay-host-race-0"
D0121 06:16:57.314651   40867 x:0] urpc: successfully marshalled 123 bytes.
W0121 06:16:57.439870   40867 x:0] FATAL ERROR: container sandbox is not running
container sandbox is not running
W0121 06:16:57.440121   40867 x:0] Failure to execute command, err: 1