panic: Stack for running G's are skipped while panicking. Sentry detected 1 stuck task(s): Task tid: 48201 (0xbc49), entered RunSys state 5m8.12s ago. Search for '(*Task).run(0x..., 0x)' in the stack dump to find the offending goroutine goroutine 157 [running]: DIAGNOSIS: I0206 12:40:29.258559 42611 log.go:209] *************************** I0206 12:40:29.258784 42611 log.go:209] 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-1] I0206 12:40:29.258983 42611 log.go:209] Version release-20200127.0-84-gf3d95607036b I0206 12:40:29.259076 42611 log.go:209] PID: 42611 I0206 12:40:29.259162 42611 log.go:209] UID: 0, GID: 0 I0206 12:40:29.259250 42611 log.go:209] Configuration: I0206 12:40:29.259339 42611 log.go:209] RootDir: /syzkaller/managers/ptrace-proxy-sandbox-race/workdir/gvisor_root I0206 12:40:29.259443 42611 log.go:209] Platform: ptrace I0206 12:40:29.259524 42611 log.go:209] FileAccess: shared, overlay: false I0206 12:40:29.259804 42611 log.go:209] Network: sandbox, logging: false I0206 12:40:29.259960 42611 log.go:209] Strace: false, max size: 1024, syscalls: [] I0206 12:40:29.260136 42611 log.go:209] *************************** W0206 12:40:29.260261 42611 log.go:216] Block the TERM signal. This is only safe in tests! D0206 12:40:29.294237 42611 log.go:202] Load container "/syzkaller/managers/ptrace-proxy-sandbox-race/workdir/gvisor_root" "ci-gvisor-ptrace-proxy-sandbox-race-1" D0206 12:40:29.392866 42611 log.go:202] Signal container "ci-gvisor-ptrace-proxy-sandbox-race-1": signal 0 D0206 12:40:29.393671 42611 log.go:202] Signal sandbox "ci-gvisor-ptrace-proxy-sandbox-race-1" D0206 12:40:29.393837 42611 log.go:202] Connecting to sandbox "ci-gvisor-ptrace-proxy-sandbox-race-1" D0206 12:40:29.397704 42611 log.go:202] urpc: successfully marshalled 117 bytes. W0206 12:40:34.619421 42611 log.go:216] FATAL ERROR: container sandbox is not running container sandbox is not running W0206 12:40:34.628188 42611 log.go:216] Failure to execute command, err: 1