In article <>,
Jason Thorpe  <> wrote:
>> On Dec 3, 2018, at 11:27 AM, Christos Zoulas <> wrote:
>> I don't think that the things that KASLR randomizes by default are useful
>> to debugging. I.e. you can't depend on two successive kernel crashes to
>> have identical PTE addresses; OTOH you can depend that the text addresses
>> are the same (which are for GENERIC and are not for GENERIC_KASLR).
>Oh, that depends.  I would say if you are debugging a low-level VM
>problem, being able to have a predictable PTE address at the time of a
>crash could be VERY helpful.

I should have added "in general" :-) Yes, there are corner cases
(where you could depend on things being identical on the same
machine) in which not having ASLR can be useful. But I think that
if you are doing this level of debugging you probably know how to
turn it off... If that proves to be a common case we can add an
ifdef to facilitate turning it off...


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