On Tue, Mar 10, 2009 at 12:02 AM, Vishal Thanki wrote:
> yea.. its defined as "extern" there.. and no, don't include ".c" file :)
> i believe that ur kernel is not built with timekeeping.o..
> can you send me the output of "cat /proc/kallsyms | grep xtime" command ??
[r...@localhost host-tests]#
On Wed, Mar 11, 2009 at 1:22 PM, NAHieu wrote:
> Thanks for all the links, but that is not what I am looking for.
>
> My question is: I dont understand why some (all?) data areas in my
> NX-enable machine dont prohibit execution (why it should).
I mean "(while it should)" above (not "why")
Thank
Thanks for all the links, but that is not what I am looking for.
My question is: I dont understand why some (all?) data areas in my
NX-enable machine dont prohibit execution (why it should).
I dont look for the solution (like PaX), just want to know why
NX-feature doesnt behave like I expected.
Sorry, and another article too:
Bypassing PaX ASLR protection
On Wed, Mar 11, 2009 at 11:55 AM, Peter Teoh wrote:
> Bypassing PaX - check out this Phrack article:
>
> The advanced return-into-lib(c) exploits
>
> On Wed, Mar 11, 2009 at 11:51 AM, Peter Teoh wrote:
>> the best I can find is this:
Bypassing PaX - check out this Phrack article:
The advanced return-into-lib(c) exploits
On Wed, Mar 11, 2009 at 11:51 AM, Peter Teoh wrote:
> the best I can find is this:
>
> http://wapedia.mobi/en/Executable_space_protection
>
> which indicated that ExecShield was rejected because of some
> "in
the best I can find is this:
http://wapedia.mobi/en/Executable_space_protection
which indicated that ExecShield was rejected because of some
"intrusive changes".
And reading this:
http://wapedia.mobi/en/Exec_Shield
ExecShield is only an emulation, not really requiring true hardware
support, an
i think if date area can execute code ,it is really very dangerous for
cracker who can easily write
shellcode like :
char shellcode[]={};
void (*fp)() = shellcode;
fp();
these some virus lovers give examples:
http://www.governmentsecurity.org/forum/lofiversion/index.php/t31130.html
I search on t
It has been done before - called PaX. Search the Phrack article on PaX.
On Wed, Mar 11, 2009 at 10:04 AM, NAHieu wrote:
>
> On Wed, Mar 11, 2009 at 10:46 AM, NAHieu wrote:
> > On Tue, Mar 10, 2009 at 4:13 PM, Peter Teoh wrote:
> >> Sorry, my mistake, PAE is required yes, and then 32bit Linux
On Wed, Mar 11, 2009 at 10:46 AM, NAHieu wrote:
> On Tue, Mar 10, 2009 at 4:13 PM, Peter Teoh wrote:
>> Sorry, my mistake, PAE is required yes, and then 32bit Linux Kernel
>> will have NX enabled:
>>
>> PAE can be enabled with CONFIG_X86_PAE (and CONFIG_HIGHMEM64G -
>> possibly needed, which is w
On Tue, Mar 10, 2009 at 4:13 PM, Peter Teoh wrote:
> Sorry, my mistake, PAE is required yes, and then 32bit Linux Kernel
> will have NX enabled:
>
> PAE can be enabled with CONFIG_X86_PAE (and CONFIG_HIGHMEM64G -
> possibly needed, which is what the kernel config file for Fedora Core
> 11 has):
>
The proper term to use is inode number, block number (or block ID), or inode
structure.
As far as possible, for both of these information, it is NOT saved in the
storage space. reason is because it is supposed to be calculated.
For example - from kernel source fs/ext2/inode.c:
static struct ex
On Tue, Mar 10, 2009 at 2:18 PM, Manish Katiyar wrote:
> On Tue, Mar 10, 2009 at 1:06 PM, Sagar lokhande
> wrote:
>> hi all
>> how can i find the inode block address?
>
or do you mean "inode bitmap block" ?
> [ccing kernelnewbies]
>
> What do you mean by that ? Do you mean the block numbers
>
>
> Is this based on a specific problem you're experiencing ?
> For example, the RMW could not be atomic, resulting in corruption of some
> reg(s),
>
>
> I am trying to add PEBS support to OPrfoile .The metrics for front_end
event are
load_retired and store_retired. I want to know what is the sig
On Tue, Mar 10, 2009 at 1:06 PM, Sagar lokhande wrote:
> hi all
> how can i find the inode block address?
[ccing kernelnewbies]
What do you mean by that ? Do you mean the block numbers for a
particular inode ??
Thanks -
Manish
> --
> To unsubscribe from this list: send the line "unsubscribe l
Sorry, my mistake, PAE is required yes, and then 32bit Linux Kernel
will have NX enabled:
PAE can be enabled with CONFIG_X86_PAE (and CONFIG_HIGHMEM64G -
possibly needed, which is what the kernel config file for Fedora Core
11 has):
In arch/x86/mm/init_32.c:
#ifdef CONFIG_X86_PAE
set_nx(
yea.. its defined as "extern" there.. and no, don't include ".c" file :)
i believe that ur kernel is not built with timekeeping.o..
can you send me the output of "cat /proc/kallsyms | grep xtime" command ??
vishal
Harsha wrote:
On Mon, Mar 9, 2009 at 11:29 PM, Vishal Thanki wrote:
its dec
its declared in linux/time/timekeeping.c
ref : http://lxr.linux.no/linux+v2.6.28.7/kernel/time/timekeeping.c#L45
btw, have you tried by loading the module?? does it complain in loading
it???
Harsha wrote:
Hi all,
After reading the The Linux Kernel Module Programming Guide, I have
written a v
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