On Tue, Feb 09, 2021 at 12:07:57PM -0300, Thiago Jung Bauermann wrote:
Greg Kroah-Hartman gregkh@linuxfoundation.org writes:
From: Roman Gushchin guro@fb.com
[ Upstream commit 2dcb3964544177c51853a210b6ad400de78ef17d ]
With kaslr the kernel image is placed at a random place, so starting the bottom-up allocation with the kernel_end can result in an allocation failure and a warning like this one:
Not sure if this is ready for stable yet (including stable branches 4.19 and 5.4), since it seems to uncover latent bugs in x86 early memory reservation. I asked about this issue here:
https://lore.kernel.org/lkml/87ft26yuwg.fsf@manicouagan.localdomain/
If there are fixes for this that get merged, please make sure they get tagged properly to go to the stable trees as well.
thanks,
greg k-h