panic: runtime error: makeslice: len out of range DIAGNOSIS: I0313 11:31:45.061337 32718 main.go:305] *************************** I0313 11:31:45.061413 32718 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-2] I0313 11:31:45.061465 32718 main.go:307] Version release-20200219.0-158-g919664600d8d I0313 11:31:45.061492 32718 main.go:308] PID: 32718 I0313 11:31:45.061521 32718 main.go:309] UID: 0, GID: 0 I0313 11:31:45.061553 32718 main.go:310] Configuration: I0313 11:31:45.061579 32718 main.go:311] RootDir: /syzkaller/managers/kvm-proxy-overlay-sandbox/workdir/gvisor_root I0313 11:31:45.061604 32718 main.go:312] Platform: kvm I0313 11:31:45.061634 32718 main.go:313] FileAccess: exclusive, overlay: true I0313 11:31:45.061671 32718 main.go:314] Network: sandbox, logging: false I0313 11:31:45.061712 32718 main.go:315] Strace: false, max size: 1024, syscalls: [] I0313 11:31:45.061739 32718 main.go:316] *************************** D0313 11:31:45.061817 32718 container.go:159] Load container "/syzkaller/managers/kvm-proxy-overlay-sandbox/workdir/gvisor_root" "ci-gvisor-kvm-proxy-overlay-sandbox-2" D0313 11:31:45.063897 32718 container.go:592] Signal container "ci-gvisor-kvm-proxy-overlay-sandbox-2": signal 0 D0313 11:31:45.063944 32718 sandbox.go:814] Signal sandbox "ci-gvisor-kvm-proxy-overlay-sandbox-2" D0313 11:31:45.063965 32718 sandbox.go:318] Connecting to sandbox "ci-gvisor-kvm-proxy-overlay-sandbox-2" D0313 11:31:45.064453 32718 urpc.go:534] urpc: successfully marshalled 117 bytes. I0313 11:31:45.492903 32718 debug.go:128] Found sandbox "ci-gvisor-kvm-proxy-overlay-sandbox-2", PID: 26956 I0313 11:31:45.492949 32718 debug.go:137] Retrieving sandbox stacks D0313 11:31:45.492971 32718 sandbox.go:932] Stacks sandbox "ci-gvisor-kvm-proxy-overlay-sandbox-2" D0313 11:31:45.492993 32718 sandbox.go:318] Connecting to sandbox "ci-gvisor-kvm-proxy-overlay-sandbox-2" W0313 11:31:45.493056 32718 error.go:48] FATAL ERROR: retrieving stacks: connecting to control server at PID 26956: connection refused retrieving stacks: connecting to control server at PID 26956: connection refused W0313 11:31:45.493339 32718 main.go:338] Failure to execute command, err: 1