panic: Start 0x555bf07b2fd6 + offset 0x555bf07b3000 overflows?

goroutine 246 [running]:
DIAGNOSIS:
I0316 09:58:42.901787   46293 main.go:305] ***************************
I0316 09:58:42.901955   46293 main.go:306] Args: [/syzkaller/managers/ptrace-proxy-sandbox-race/current/image -root /syzkaller/managers/ptrace-proxy-sandbox-race/workdir/gvisor_root -watchdog-action=panic -network=none -debug -alsologtostderr -platform=ptrace -file-access=shared -network=sandbox -TESTONLY-unsafe-nonroot debug -stacks --ps ci-gvisor-ptrace-proxy-sandbox-race-3]
I0316 09:58:42.902143   46293 main.go:307] Version release-20200219.0-178-g97127750289b
I0316 09:58:42.902234   46293 main.go:308] PID: 46293
I0316 09:58:42.902326   46293 main.go:309] UID: 0, GID: 0
I0316 09:58:42.902425   46293 main.go:310] Configuration:
I0316 09:58:42.902527   46293 main.go:311] 		RootDir: /syzkaller/managers/ptrace-proxy-sandbox-race/workdir/gvisor_root
I0316 09:58:42.902762   46293 main.go:312] 		Platform: ptrace
I0316 09:58:42.902847   46293 main.go:313] 		FileAccess: shared, overlay: false
I0316 09:58:42.902971   46293 main.go:314] 		Network: sandbox, logging: false
I0316 09:58:42.903089   46293 main.go:315] 		Strace: false, max size: 1024, syscalls: []
I0316 09:58:42.903820   46293 main.go:316] ***************************
W0316 09:58:42.903916   46293 main.go:321] Block the TERM signal. This is only safe in tests!
D0316 09:58:42.905193   46293 container.go:159] Load container "/syzkaller/managers/ptrace-proxy-sandbox-race/workdir/gvisor_root" "ci-gvisor-ptrace-proxy-sandbox-race-3"
W0316 09:58:42.940001   46293 error.go:48] FATAL ERROR: container sandbox is not running
container sandbox is not running
W0316 09:58:42.940321   46293 main.go:338] Failure to execute command, err: 1