On 11/06/2015 03:49 PM, Kees Cook wrote:
On Fri, Nov 6, 2015 at 3:41 PM, Laura Abbott wrote:
On 11/06/2015 12:46 PM, Russell King - ARM Linux wrote:
On Fri, Nov 06, 2015 at 10:44:32AM -0800, Laura Abbott wrote:
with my test patch. I think setting both current->active_mm and &init_mm
is suff
On Fri, Nov 6, 2015 at 3:41 PM, Laura Abbott wrote:
> On 11/06/2015 12:46 PM, Russell King - ARM Linux wrote:
>>
>> On Fri, Nov 06, 2015 at 10:44:32AM -0800, Laura Abbott wrote:
>>>
>>> with my test patch. I think setting both current->active_mm and &init_mm
>>> is sufficient. Maybe explicitly set
On Fri, Nov 6, 2015 at 2:37 PM, Kevin Hilman wrote:
> Kees Cook writes:
>
>> On Fri, Nov 6, 2015 at 1:06 PM, Kevin Hilman wrote:
>
> [...]
>
>> Well, all the stuff I wrote tests for in lkdtm expect the kernel to
>> entirely Oops, and examining the Oops from outside is needed to verify
>> it was
On 11/06/2015 12:46 PM, Russell King - ARM Linux wrote:
On Fri, Nov 06, 2015 at 10:44:32AM -0800, Laura Abbott wrote:
with my test patch. I think setting both current->active_mm and &init_mm
is sufficient. Maybe explicitly setting swapper_pg_dir would be cleaner?
Please, stop thinking like thi
On Fri, Nov 6, 2015 at 2:37 PM, Kevin Hilman wrote:
> Kees Cook writes:
>
>> On Fri, Nov 6, 2015 at 1:06 PM, Kevin Hilman wrote:
>
> [...]
>
>> Well, all the stuff I wrote tests for in lkdtm expect the kernel to
>> entirely Oops, and examining the Oops from outside is needed to verify
>> it was
Kees Cook writes:
> On Fri, Nov 6, 2015 at 1:06 PM, Kevin Hilman wrote:
[...]
> Well, all the stuff I wrote tests for in lkdtm expect the kernel to
> entirely Oops, and examining the Oops from outside is needed to verify
> it was the correct type of Oops. I don't think testing via lkdtm can
>
On Fri, Nov 6, 2015 at 1:06 PM, Kevin Hilman wrote:
> Kees Cook writes:
>
>> On Fri, Nov 6, 2015 at 12:11 PM, Kevin Hilman wrote:
>>> On Fri, Nov 6, 2015 at 11:12 AM, Kees Cook wrote:
>>>
>>> [...]
>>>
Hi Kevin and Kernel CI folks,
Could lkdtm get added to the kernel-CI workflows
Kees Cook writes:
> On Fri, Nov 6, 2015 at 12:11 PM, Kevin Hilman wrote:
>> On Fri, Nov 6, 2015 at 11:12 AM, Kees Cook wrote:
>>
>> [...]
>>
>>> Hi Kevin and Kernel CI folks,
>>>
>>> Could lkdtm get added to the kernel-CI workflows? Extracting and
>>> validating Oops details when poking lkdtm w
On Fri, Nov 06, 2015 at 10:44:32AM -0800, Laura Abbott wrote:
> with my test patch. I think setting both current->active_mm and &init_mm
> is sufficient. Maybe explicitly setting swapper_pg_dir would be cleaner?
Please, stop thinking like this. If you're trying to change the kernel
section mappin
On Fri, Nov 6, 2015 at 12:11 PM, Kevin Hilman wrote:
> On Fri, Nov 6, 2015 at 11:12 AM, Kees Cook wrote:
>
> [...]
>
>> Hi Kevin and Kernel CI folks,
>>
>> Could lkdtm get added to the kernel-CI workflows? Extracting and
>> validating Oops details when poking lkdtm would be extremely valuable
>>
On Fri, Nov 6, 2015 at 11:12 AM, Kees Cook wrote:
[...]
> Hi Kevin and Kernel CI folks,
>
> Could lkdtm get added to the kernel-CI workflows? Extracting and
> validating Oops details when poking lkdtm would be extremely valuable
> for these cases. :)
Yeah, we can add that.
What arches should w
On Fri, Nov 6, 2015 at 11:08 AM, Kees Cook wrote:
> On Fri, Nov 6, 2015 at 10:44 AM, Laura Abbott wrote:
>> On 11/05/2015 05:15 PM, Kees Cook wrote:
>>>
>>> On Thu, Nov 5, 2015 at 5:05 PM, Laura Abbott wrote:
On 11/05/2015 08:27 AM, Russell King - ARM Linux wrote:
>
>
> On
On Fri, Nov 6, 2015 at 10:44 AM, Laura Abbott wrote:
> On 11/05/2015 05:15 PM, Kees Cook wrote:
>>
>> On Thu, Nov 5, 2015 at 5:05 PM, Laura Abbott wrote:
>>>
>>> On 11/05/2015 08:27 AM, Russell King - ARM Linux wrote:
On Thu, Nov 05, 2015 at 08:20:42AM -0800, Laura Abbott wrote:
>>
On 11/05/2015 05:15 PM, Kees Cook wrote:
On Thu, Nov 5, 2015 at 5:05 PM, Laura Abbott wrote:
On 11/05/2015 08:27 AM, Russell King - ARM Linux wrote:
On Thu, Nov 05, 2015 at 08:20:42AM -0800, Laura Abbott wrote:
On 11/05/2015 01:46 AM, Russell King - ARM Linux wrote:
On Wed, Nov 04, 2015 a
On Thu, Nov 5, 2015 at 5:05 PM, Laura Abbott wrote:
> On 11/05/2015 08:27 AM, Russell King - ARM Linux wrote:
>>
>> On Thu, Nov 05, 2015 at 08:20:42AM -0800, Laura Abbott wrote:
>>>
>>> On 11/05/2015 01:46 AM, Russell King - ARM Linux wrote:
On Wed, Nov 04, 2015 at 05:00:39PM -0800, Laur
On 11/05/2015 08:27 AM, Russell King - ARM Linux wrote:
On Thu, Nov 05, 2015 at 08:20:42AM -0800, Laura Abbott wrote:
On 11/05/2015 01:46 AM, Russell King - ARM Linux wrote:
On Wed, Nov 04, 2015 at 05:00:39PM -0800, Laura Abbott wrote:
Currently, read only permissions are not being applied eve
On Thu, Nov 05, 2015 at 08:20:42AM -0800, Laura Abbott wrote:
> On 11/05/2015 01:46 AM, Russell King - ARM Linux wrote:
> >On Wed, Nov 04, 2015 at 05:00:39PM -0800, Laura Abbott wrote:
> >>Currently, read only permissions are not being applied even
> >>when CONFIG_DEBUG_RODATA is set. This is becau
On 11/05/2015 01:46 AM, Russell King - ARM Linux wrote:
On Wed, Nov 04, 2015 at 05:00:39PM -0800, Laura Abbott wrote:
Currently, read only permissions are not being applied even
when CONFIG_DEBUG_RODATA is set. This is because section_update
uses current->mm for adjusting the page tables. curren
On Wed, Nov 04, 2015 at 05:00:39PM -0800, Laura Abbott wrote:
> Currently, read only permissions are not being applied even
> when CONFIG_DEBUG_RODATA is set. This is because section_update
> uses current->mm for adjusting the page tables. current->mm
> need not be equivalent to the kernel version.
On Wed, Nov 4, 2015 at 5:06 PM, Kees Cook wrote:
> On Wed, Nov 4, 2015 at 5:00 PM, Laura Abbott
> wrote:
>> Currently, read only permissions are not being applied even
>> when CONFIG_DEBUG_RODATA is set. This is because section_update
>> uses current->mm for adjusting the page tables. current->m
On Wed, Nov 4, 2015 at 5:00 PM, Laura Abbott wrote:
> Currently, read only permissions are not being applied even
> when CONFIG_DEBUG_RODATA is set. This is because section_update
> uses current->mm for adjusting the page tables. current->mm
> need not be equivalent to the kernel version. Use pgd_
Currently, read only permissions are not being applied even
when CONFIG_DEBUG_RODATA is set. This is because section_update
uses current->mm for adjusting the page tables. current->mm
need not be equivalent to the kernel version. Use pgd_offset_k
to get the proper page directory for updating.
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