Re: [tip:x86/boot] x86/KASLR: Fix boot crash with certain memory configurations

From: Ingo Molnar
Date: Sun Jul 10 2016 - 07:24:48 EST



* Baoquan He <bhe@xxxxxxxxxx> wrote:

> Hi Ingo,
>
> I am sorry the previous post didn't contain formal patch log. I made a new one
> as below. The boot crash could not only happen with certain memory. Because of
> this code bug the regions which need be avoided like the zipped kernel with its
> unzipping running code, initrd, kernel command line could be corrupted if
> mem_avoid_overlap() can't find the overlap region with the lowest address. But
> it's very lucky that Xiaolong's system which has only 300M memory can always
> reproduce it. I checked the boog log and found on his system no any other slot
> can be chosen except for the original one. If we have a system with large memory
> it may not be easy to hit it, at least with low probability since there are many
> candidate slots.

So if it's just a better changelog that what I wrote I wouldn't rebase the commit:
there's other commits on top of the fix meanwhile. Should a rebase become
necessary at a later point I'll update it with your extended changelog.

Thanks,

Ingo