等待围栏会导致警告和应用程序冻结

我提交一个队列并指定一个围栏。就在提交之前,我打印了栅栏:

qDebug() << "submitting fence: " << cmdFence;
vkQueueSubmit(gfxQueue, 1, &submitInfo, cmdFence);

以下是最近3次提交的结果:

submitting fence:  0x145
submitting fence:  0x142
submitting fence:  0x145

qDebug() << "waiting for fences";
for(auto f : activeFences)
    qDebug() << "fence " << f;

if(vkWaitForFences(m_moduleData.deviceData.device,
                   static_cast<uint32_t>(activeFences.size()),
                   activeFences.data(),
                   VK_TRUE,
                   UINT64_MAX) != VK_SUCCESS)
{
    throw std::runtime_error{"failed to wait for fences"};
}

可以看到,我在等待之前也在打印栅栏,这就是我之前得到的 vkWaitForFences 呼叫:

waiting for fences
fence  0x142

同样的篱笆 0x142 之前提交的!但验证层会发出警告:

vkWaitForFences called for fence 0x142 which has not been submitted on a Queue or during acquire next image.

应用程序可能会在无限的等待中冻结。但为什么呢?