panic: invalid allocation length: 0x0
DIAGNOSIS:
I0128 06:52:52.715669   55615 x:0] ***************************
I0128 06:52:52.715808   55615 x:0] 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-0]
I0128 06:52:52.716009   55615 x:0] Version release-20200115.0-104-g6b14be4246e8
I0128 06:52:52.716066   55615 x:0] PID: 55615
I0128 06:52:52.716112   55615 x:0] UID: 0, GID: 0
I0128 06:52:52.716159   55615 x:0] Configuration:
I0128 06:52:52.716201   55615 x:0] 		RootDir: /syzkaller/managers/ptrace-proxy-sandbox-race/workdir/gvisor_root
I0128 06:52:52.716245   55615 x:0] 		Platform: ptrace
I0128 06:52:52.716276   55615 x:0] 		FileAccess: shared, overlay: false
I0128 06:52:52.716318   55615 x:0] 		Network: sandbox, logging: false
I0128 06:52:52.716493   55615 x:0] 		Strace: false, max size: 1024, syscalls: []
I0128 06:52:52.716559   55615 x:0] ***************************
W0128 06:52:52.716614   55615 x:0] Block the TERM signal. This is only safe in tests!
D0128 06:52:52.716851   55615 x:0] Load container "/syzkaller/managers/ptrace-proxy-sandbox-race/workdir/gvisor_root" "ci-gvisor-ptrace-proxy-sandbox-race-0"
D0128 06:52:52.725116   55615 x:0] Signal container "ci-gvisor-ptrace-proxy-sandbox-race-0": signal 0
D0128 06:52:52.725365   55615 x:0] Signal sandbox "ci-gvisor-ptrace-proxy-sandbox-race-0"
D0128 06:52:52.725465   55615 x:0] Connecting to sandbox "ci-gvisor-ptrace-proxy-sandbox-race-0"
D0128 06:52:52.725926   55615 x:0] urpc: successfully marshalled 117 bytes.
W0128 06:52:52.819300   55615 x:0] FATAL ERROR: container sandbox is not running
container sandbox is not running
W0128 06:52:52.819732   55615 x:0] Failure to execute command, err: 1