On Thu, Jan 13, 2022 at 04:33:50PM +0100, Greg KH wrote:
> On Thu, Jan 13, 2022 at 07:39:38AM +0100, Philipp Hortmann wrote:
> > On 1/12/22 10:54 AM, Greg KH wrote:
> > > That driver tried to be an example for an unknown device, doing multiple
> > > different things that no single driver/device
On Thu, Jan 13, 2022 at 07:39:38AM +0100, Philipp Hortmann wrote:
> On 1/12/22 10:54 AM, Greg KH wrote:
> > That driver tried to be an example for an unknown device, doing multiple
> > different things that no single driver/device would probably ever need.
> > Also it can almost always just be
On Thu, Jan 13, 2022 at 4:04 PM admin LI wrote:
>
> I'm developing a kernel module for an ARM machine, while debugging I found
> addresses
> printed are all randomized and useless for debugging.
>
> To prove I was not crazy I wrote this small program:
>
> -
>
> > When I search randomization the only thing I found is KASLR which I
> don't think is the same thing.
>
Think about this carefully. When you insmod that kernel module which
address space is it using ? Kernel or Userspace ? :-)
This will help:
Hi,
I'm developing a kernel module for an ARM machine, while debugging I found
addresses
printed are all randomized and useless for debugging.
To prove I was not crazy I wrote this small program:
-
#include
#include
#include
#include
MODULE_LICENSE("GPL");
On Thu, Jan 13, 2022 at 08:01:04PM +0100, Greg KH wrote:
> On Thu, Jan 13, 2022 at 07:54:19PM +0100, Philipp Hortmann wrote:
> > On 1/13/22 4:33 PM, Greg KH wrote:
> > > On Thu, Jan 13, 2022 at 07:39:38AM +0100, Philipp Hortmann wrote:
> > > > On 1/12/22 10:54 AM, Greg KH wrote:
> > > > > That
On Thu, Jan 13, 2022 at 07:54:19PM +0100, Philipp Hortmann wrote:
> On 1/13/22 4:33 PM, Greg KH wrote:
> > On Thu, Jan 13, 2022 at 07:39:38AM +0100, Philipp Hortmann wrote:
> > > On 1/12/22 10:54 AM, Greg KH wrote:
> > > > That driver tried to be an example for an unknown device, doing multiple
>
On 1/13/22 4:33 PM, Greg KH wrote:
On Thu, Jan 13, 2022 at 07:39:38AM +0100, Philipp Hortmann wrote:
On 1/12/22 10:54 AM, Greg KH wrote:
That driver tried to be an example for an unknown device, doing multiple
different things that no single driver/device would probably ever need.
Also it can
Hi,
To print kernel virtual address, you should use %px instead of %p in the printk.
Probably that’s why you couldn’t see the pointer values correctly.
Chan
From: admin LI
Sent: Friday, January 14, 2022 6:02 AM
To: kernelnewbies@kernelnewbies.org
Subject: How to disable address
Hi Chan,
Thank you for pointing me to the right direction.
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
Hi Jeff,
Thanks for your help, 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
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