// We can only set user arenas to fault if we're in the _GCoff phase.
	if gcphase == _GCoff {
		lock(&userArenaState.lock)
		faultList := userArenaState.fault
		userArenaState.fault = nil
		unlock(&userArenaState.lock)

		s.setUserArenaChunkToFault()
		for _, lc := range faultList {
			lc.mspan.setUserArenaChunkToFault()
		}

		// Until the chunks are set to fault, keep them alive via the fault list.

	xdsfault "github.com/envoyproxy/go-control-plane/envoy/extensions/filters/common/fault/v3"
	cors "github.com/envoyproxy/go-control-plane/envoy/extensions/filters/http/cors/v3"
	xdshttpfault "github.com/envoyproxy/go-control-plane/envoy/extensions/filters/http/fault/v3"
	matcher "github.com/envoyproxy/go-control-plane/envoy/type/matcher/v3"
	xdstype "github.com/envoyproxy/go-control-plane/envoy/type/v3"

			// We could check that the arena chunk is explicitly set to fault,
			// but the fact that we faulted on accessing it is enough to prove
			// that it is.
			print("accessed data from freed user arena ", hex(gp.sigcode1), "\n")
		} else {
			print("unexpected fault address ", hex(gp.sigcode1), "\n")
		}
		throw("fault")
	case _SIGTRAP:
		if gp.paniconfault {
			panicmem()
		}
		throw(note)

			// We could check that the arena chunk is explicitly set to fault,
			// but the fact that we faulted on accessing it is enough to prove
			// that it is.
			print("accessed data from freed user arena ", hex(gp.sigcode1), "\n")
		} else {
			print("unexpected fault address ", hex(gp.sigcode1), "\n")
		}
		throw("fault")
	case _SIGFPE:
		switch gp.sigcode0 {
		case _FPE_INTDIV:
			panicdivide()

	}
	if delegate.Timeout == nil {
		delegate.Timeout = root.Timeout
	}
	if delegate.Retries == nil {
		delegate.Retries = root.Retries
	}
	if delegate.Fault == nil {
		delegate.Fault = root.Fault
	}
	if delegate.Mirror == nil {
		delegate.Mirror = root.Mirror
	}
	// nolint: staticcheck
	if delegate.MirrorPercent == nil {
		delegate.MirrorPercent = root.MirrorPercent
	}

		Operation: istio_route.GetRouteOperation(out, virtualService.Name, listenPort),
	}
	if in.Fault != nil || in.CorsPolicy != nil {
		out.TypedPerFilterConfig = make(map[string]*any.Any)
	}
	if in.Fault != nil {
		out.TypedPerFilterConfig[wellknown.Fault] = protoconv.MessageToAny(istio_route.TranslateFault(in.Fault))
	}
	if in.CorsPolicy != nil {

	}

	defer func() {
		if err := recover(); err != nil {
			*nfault++
		}
	}()

	// The read should fault, except that sometimes we hit
	// addresses that have had C or kernel pages mapped there
	// readable by user code. So just log the content.
	// If no addresses fault, we'll fail the test.
	v := *(*byte)(unsafe.Pointer(addr))
	t.Logf("addr %#x: %#x\n", addr, v)
}

	{9, "SIGKILL", "killed"},
	{10, "SIGUSR1", "user defined signal 1"},
	{11, "SIGSEGV", "segmentation fault"},
	{12, "SIGUSR2", "user defined signal 2"},
	{13, "SIGPIPE", "broken pipe"},
	{14, "SIGALRM", "alarm clock"},
	{15, "SIGTERM", "terminated"},
	{16, "SIGSTKFLT", "stack fault"},
	{17, "SIGCHLD", "child exited"},
	{18, "SIGCONT", "continued"},
	{19, "SIGSTOP", "stopped (signal)"},

	{9, "SIGKILL", "killed"},
	{10, "SIGUSR1", "user defined signal 1"},
	{11, "SIGSEGV", "segmentation fault"},
	{12, "SIGUSR2", "user defined signal 2"},
	{13, "SIGPIPE", "broken pipe"},
	{14, "SIGALRM", "alarm clock"},
	{15, "SIGTERM", "terminated"},
	{16, "SIGSTKFLT", "stack fault"},
	{17, "SIGCHLD", "child exited"},
	{18, "SIGCONT", "continued"},
	{19, "SIGSTOP", "stopped (signal)"},

	{9, "SIGKILL", "killed"},
	{10, "SIGUSR1", "user defined signal 1"},
	{11, "SIGSEGV", "segmentation fault"},
	{12, "SIGUSR2", "user defined signal 2"},
	{13, "SIGPIPE", "broken pipe"},
	{14, "SIGALRM", "alarm clock"},
	{15, "SIGTERM", "terminated"},
	{16, "SIGSTKFLT", "stack fault"},
	{17, "SIGCHLD", "child exited"},
	{18, "SIGCONT", "continued"},
	{19, "SIGSTOP", "stopped (signal)"},