Thanks Peter for the great explanation!
I'm working towards modifiying the kernel by adding a new layer so
luckily I have the change_page_attr_set available to me.
Thanks,
Asim
On 7/15/08, Peter Teoh <[EMAIL PROTECTED]> wrote:
> This is a feature of the Intel CPU - called the NX bit. Once turn
This is a feature of the Intel CPU - called the NX bit. Once turned
on, it is a hardware feature whereby u can specify whether the code is
made executeable or not. As of 2nd edition of Understanding Linux
Kernel, it is still mentioned that x86 cannot distinguished between
executeable and non-ex
I'm allocation some function pointers and they were not executable. I
wanted to make them executable. I was able to fix my problem. Let me
know if there is any bug in what I did.
my_array_of _fn_pointers = kmalloc(sizeof
your_favourite_fn_ptr_struct_here, GFP_KERNEL);
addr = my_array_of _fn_poin
The itf is actually addr variable . That was a typo while formatting
code in the mail.
Regards,
Asim
On 7/15/08, Asim <[EMAIL PROTECTED]> wrote:
> I'm allocation some function pointers and they were not executable. I
> wanted to make them executable. I was able to fix my problem. Let me
> know if
Can you be a bit more specific ?
On Tue, Jul 15, 2008 at 9:55 PM, Asim <[EMAIL PROTECTED]> wrote:
> Hi,
>
> I try to allocate memory to generate some executable code in memory.
> But when i try to execute - I get the following error "kernel tried to
> execute NX-protected page - exploit attempt? (
Hi,
I try to allocate memory to generate some executable code in memory.
But when i try to execute - I get the following error "kernel tried to
execute NX-protected page - exploit attempt? (uid: 0)". Is there some
different way to allocate executable memory (and not data). Kindly
help.
Regards,
A
