fatal error: out of memory
DIAGNOSIS:
I0316 11:13:05.476273    2894 main.go:305] ***************************
I0316 11:13:05.476331    2894 main.go:306] Args: [/syzkaller/managers/kvm-proxy-overlay-sandbox/current/image -root /syzkaller/managers/kvm-proxy-overlay-sandbox/workdir/gvisor_root -watchdog-action=panic -network=none -debug -alsologtostderr -platform=kvm -file-access=exclusive -overlay -network=sandbox debug -stacks --ps ci-gvisor-kvm-proxy-overlay-sandbox-0]
I0316 11:13:05.476381    2894 main.go:307] Version release-20200219.0-175-g829beebf0b67
I0316 11:13:05.476420    2894 main.go:308] PID: 2894
I0316 11:13:05.476449    2894 main.go:309] UID: 0, GID: 0
I0316 11:13:05.476476    2894 main.go:310] Configuration:
I0316 11:13:05.476506    2894 main.go:311] 		RootDir: /syzkaller/managers/kvm-proxy-overlay-sandbox/workdir/gvisor_root
I0316 11:13:05.476554    2894 main.go:312] 		Platform: kvm
I0316 11:13:05.476582    2894 main.go:313] 		FileAccess: exclusive, overlay: true
I0316 11:13:05.476650    2894 main.go:314] 		Network: sandbox, logging: false
I0316 11:13:05.476703    2894 main.go:315] 		Strace: false, max size: 1024, syscalls: []
I0316 11:13:05.476734    2894 main.go:316] ***************************
D0316 11:13:05.477798    2894 container.go:159] Load container "/syzkaller/managers/kvm-proxy-overlay-sandbox/workdir/gvisor_root" "ci-gvisor-kvm-proxy-overlay-sandbox-0"
D0316 11:13:05.484730    2894 container.go:592] Signal container "ci-gvisor-kvm-proxy-overlay-sandbox-0": signal 0
D0316 11:13:05.484781    2894 sandbox.go:814] Signal sandbox "ci-gvisor-kvm-proxy-overlay-sandbox-0"
D0316 11:13:05.484798    2894 sandbox.go:318] Connecting to sandbox "ci-gvisor-kvm-proxy-overlay-sandbox-0"
D0316 11:13:05.484967    2894 urpc.go:534] urpc: successfully marshalled 117 bytes.
I0316 11:13:06.034306    2894 debug.go:128] Found sandbox "ci-gvisor-kvm-proxy-overlay-sandbox-0", PID: 33915
I0316 11:13:06.034348    2894 debug.go:137] Retrieving sandbox stacks
D0316 11:13:06.034406    2894 sandbox.go:932] Stacks sandbox "ci-gvisor-kvm-proxy-overlay-sandbox-0"
D0316 11:13:06.034421    2894 sandbox.go:318] Connecting to sandbox "ci-gvisor-kvm-proxy-overlay-sandbox-0"
W0316 11:13:06.034464    2894 error.go:48] FATAL ERROR: retrieving stacks: connecting to control server at PID 33915: connection refused
retrieving stacks: connecting to control server at PID 33915: connection refused
W0316 11:13:06.034613    2894 main.go:338] Failure to execute command, err: 1