> On Dec 5, 2018, at 8:38 AM, Jason Thorpe <thor...@me.com> wrote:
>
>
>
>> On Dec 5, 2018, at 8:27 AM, Christos Zoulas <chris...@zoulas.com> wrote:
>>
>>
>> This patch:
>>
>> https://www.netbsd.org/~christos/kmem_expose_address.diff
>
> PK_KMEM should only be set if mm_open returns 0. There's a case where
> mm_md_open can return an error and PK_KMEM is still set.
Also, should PK_KMEM be inherited across fork? What if a process opens
/dev/kmem, and then forks/execs a helper to do the work, passing the file
descriptor along with it? #CanOfWorms
-- thorpej
