[Devel] [PATCH 2/2] parasite: Don't try to start executing syscall from guard page

[Pavel Emelyanov]

On 11/24/2016 07:16 PM, Cyrill Gorcunov wrote:
> On Thu, Nov 24, 2016 at 07:02:10PM +0300, Pavel Emelyanov wrote:
>> On 11/24/2016 06:48 PM, Cyrill Gorcunov wrote:
>>> When looking for place where we can do syscall we should care
>>> if there a guard page present. So check for it first.
>>
>> Have we found a task with executable stack?
> 
> Not "stack" in classic meaning, but a special mmap which
> kernels treats as a stack and adds guard page. It is our test maps05

Wait, kernel guards VMAs with MAP_GROWSDOWN, while CRIU searches for PROT_EXEC
areas to work on. Have our test created such a mapping? I'd fix the test, no
applications behave like that %)

-- Pavel