panic: Watchdog goroutine is stuck: Stack for running G's are skipped while panicking. DIAGNOSIS: I0316 01:51:10.370817 55155 main.go:305] *************************** I0316 01:51:10.370867 55155 main.go:306] Args: [/syzkaller/managers/kvm-direct-sandbox/current/image -root /syzkaller/managers/kvm-direct-sandbox/workdir/gvisor_root -watchdog-action=panic -network=none -debug -alsologtostderr -platform=kvm -file-access=exclusive -network=sandbox debug -stacks --ps ci-gvisor-kvm-direct-sandbox-0] I0316 01:51:10.370908 55155 main.go:307] Version release-20200219.0-160-gf693e1334b6f I0316 01:51:10.370928 55155 main.go:308] PID: 55155 I0316 01:51:10.370950 55155 main.go:309] UID: 0, GID: 0 I0316 01:51:10.370970 55155 main.go:310] Configuration: I0316 01:51:10.370990 55155 main.go:311] RootDir: /syzkaller/managers/kvm-direct-sandbox/workdir/gvisor_root I0316 01:51:10.371014 55155 main.go:312] Platform: kvm I0316 01:51:10.371033 55155 main.go:313] FileAccess: exclusive, overlay: false I0316 01:51:10.371066 55155 main.go:314] Network: sandbox, logging: false I0316 01:51:10.371088 55155 main.go:315] Strace: false, max size: 1024, syscalls: [] I0316 01:51:10.371113 55155 main.go:316] *************************** D0316 01:51:10.373132 55155 container.go:159] Load container "/syzkaller/managers/kvm-direct-sandbox/workdir/gvisor_root" "ci-gvisor-kvm-direct-sandbox-0" D0316 01:51:10.376439 55155 container.go:592] Signal container "ci-gvisor-kvm-direct-sandbox-0": signal 0 D0316 01:51:10.376483 55155 sandbox.go:814] Signal sandbox "ci-gvisor-kvm-direct-sandbox-0" D0316 01:51:10.376503 55155 sandbox.go:318] Connecting to sandbox "ci-gvisor-kvm-direct-sandbox-0" D0316 01:51:10.376788 55155 urpc.go:534] urpc: successfully marshalled 110 bytes. I0316 01:51:10.977489 55155 debug.go:128] Found sandbox "ci-gvisor-kvm-direct-sandbox-0", PID: 49975 I0316 01:51:10.977528 55155 debug.go:137] Retrieving sandbox stacks D0316 01:51:10.977552 55155 sandbox.go:932] Stacks sandbox "ci-gvisor-kvm-direct-sandbox-0" D0316 01:51:10.977566 55155 sandbox.go:318] Connecting to sandbox "ci-gvisor-kvm-direct-sandbox-0" D0316 01:51:10.977626 55155 urpc.go:534] urpc: successfully marshalled 36 bytes. W0316 01:51:11.036048 55155 error.go:48] FATAL ERROR: retrieving stacks: getting sandbox "ci-gvisor-kvm-direct-sandbox-0" stacks: urpc method "debug.Stacks" failed: connection reset by peer retrieving stacks: getting sandbox "ci-gvisor-kvm-direct-sandbox-0" stacks: urpc method "debug.Stacks" failed: connection reset by peer W0316 01:51:11.036210 55155 main.go:338] Failure to execute command, err: 1