[kernel] Question about 2.6.28 kernel

[Alex]

Hi everyone,

I'm currently thinking of ways to hook system calls (PoC) in the linux
kernel 2.6.28. Based on a simple rootkit, which can be executed on the
2.6.23, i got an "oops.. unable to handle kernel paging request at
0x...", when i run it on a new kernel. Can anyone help me finding what
protection was added to prevent writings on kernel memory ? 

Thanks for your help.

Alex


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