The critical thing to understand is namespaces are visibility walls, not security boundaries. They prevent a process from seeing things outside its namespace. They do not prevent a process from exploiting the kernel that implements the namespace. The process still makes syscalls to the same host kernel. If there is a bug in the kernel’s handling of any syscall, the namespace boundary does not help.
Debugging this was interesting enough that I wrote a full separate blog about it, but I’ll summarize here.
。关于这个话题，WPS官方版本下载提供了深入分析
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而在另一边，常规体验几乎摸到天花板，按部就班的迭代早就无法刺激大众的神经。于是我们看到了长着物理云台的 Robot Phone，看到了从屏幕入手的防窥方案。这些新形态和新尝试，都是在试图探索手机这个固化产品或大或小的新可能。
The page walker is a simple but effective state machine that handles TLB misses transparently, running in parallel with the microcode and driving its own bus access.