On 07/13/2017 03:26 AM, Christophe Lyon wrote:
> I have executed a validation of your patch series on aarch64 and arm
> targets, and I have minor comments.
>
> On arm, all new tests are unsupported, as expected.
Good.
> On aarch64-linux, the new tests pass, but they fail on aarch64-elf:
> - FAI
On Thu, Jul 13, 2017 at 05:10:33PM -0600, Jeff Law wrote:
> 2. ABI mandates that *sp always contain a backchain pointer (ppc)
> >>>
> >>> In the ELFv2 ABI a backchain is not required. GCC still always has
> >>> one afaik. I'll find out more.
> >> Please do. I was under the impression it w
On 07/13/2017 04:48 PM, Segher Boessenkool wrote:
> On Thu, Jul 13, 2017 at 11:28:17AM -0600, Jeff Law wrote:
>> On 07/12/2017 04:44 PM, Segher Boessenkool wrote:
>>> On Tue, Jul 11, 2017 at 03:19:36PM -0600, Jeff Law wrote:
Examples of implicit probes include
>>>
2. ABI mandates that *
On Thu, Jul 13, 2017 at 11:28:17AM -0600, Jeff Law wrote:
> On 07/12/2017 04:44 PM, Segher Boessenkool wrote:
> > On Tue, Jul 11, 2017 at 03:19:36PM -0600, Jeff Law wrote:
> >> Examples of implicit probes include
> >
> >> 2. ABI mandates that *sp always contain a backchain pointer (ppc)
> >
> >
On Thu, Jul 13, 2017 at 11:28:17AM -0600, Jeff Law wrote:
> On 07/12/2017 04:44 PM, Segher Boessenkool wrote:
> > On Tue, Jul 11, 2017 at 03:19:36PM -0600, Jeff Law wrote:
> >> Examples of implicit probes include
> >
> >> 2. ABI mandates that *sp always contain a backchain pointer (ppc)
> >
> >
On 07/13/2017 11:32 AM, Jakub Jelinek wrote:
> On Thu, Jul 13, 2017 at 11:28:17AM -0600, Jeff Law wrote:
>> On 07/12/2017 04:44 PM, Segher Boessenkool wrote:
>>> On Tue, Jul 11, 2017 at 03:19:36PM -0600, Jeff Law wrote:
Examples of implicit probes include
>>>
2. ABI mandates that *sp al
On 07/12/2017 04:44 PM, Segher Boessenkool wrote:
> On Tue, Jul 11, 2017 at 03:19:36PM -0600, Jeff Law wrote:
>> Examples of implicit probes include
>
>> 2. ABI mandates that *sp always contain a backchain pointer (ppc)
>
> In the ELFv2 ABI a backchain is not required. GCC still always has
> o
Hello,
On Tue, 11 Jul 2017, Jeff Law wrote:
> This patch series is designed to mitigate the problems exposed by the
> stack-clash exploits. As I've noted before, the way to address this
> class of problems is via a good stack probing strategy.
>
> This has taken much longer than expected to pul
Hi Jeff,
On 11 July 2017 at 23:19, Jeff Law wrote:
> This patch series is designed to mitigate the problems exposed by the
> stack-clash exploits. As I've noted before, the way to address this
> class of problems is via a good stack probing strategy.
>
> This has taken much longer than expected
On Tue, Jul 11, 2017 at 03:19:36PM -0600, Jeff Law wrote:
> Examples of implicit probes include
> 2. ABI mandates that *sp always contain a backchain pointer (ppc)
In the ELFv2 ABI a backchain is not required. GCC still always has
one afaik. I'll find out more.
> To get a sense of overhead,
This patch series is designed to mitigate the problems exposed by the
stack-clash exploits. As I've noted before, the way to address this
class of problems is via a good stack probing strategy.
This has taken much longer than expected to pull together for
submission. Sorry about that. However,
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