Re: How to disable address randomization ?

[admin LI <admin@xxxxxxxxxxxxx>]

Hi Aruna,

Thanks for your help.

Of cause it's in kernel space. I've tried

/proc/sys/kernel/randomize_va_space which does nothing.

Finally I found this in kernel document:

Pointer Types

=============

Pointers printed without a specifier extension (i.e unadorned %p) are

hashed to give a unique identifier without leaking kernel addresses to user

space. On 64 bit machines the first 32 bits are zeroed. If you _really_

want the address see %px below.

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On Jan 14, 2022, at 00:54, Aruna Hewapathirane <aruna.hewapathirane@xxxxxxxxx> wrote:

<snip>

> When I search randomization the only thing I found is KASLR which I don't think is the same thing.

<snip>

Think about this carefully. When you insmod that kernel module which address space is it using ? Kernel or Userspace ? :-)

This will help: https://askubuntu.com/questions/318315/how-can-i-temporarily-disable-aslr-address-space-layout-randomization

Good luck -Aruna

 

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