linux - Reading userspace memory from kernel module -

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In a kernel module, I restart through all the processes and vm_start and Vm_end address The problem is that these addresses are in Userspace and from the kernel module, I will need to map them through kmap

the issue which I Playing is that when users are using follow_page to get access to the page, half of them If this taps, possibly because there is a better way to read UserSpace memory or is there a way to solve the mistake and try to read it again?

If there is a better way to present, please mention it.


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