[PATCH v2 2/2] KVM: arm64: Unregister HYP sections from kmemleak in protected mode

[Catalin Marinas]

On Mon, Aug 02, 2021 at 01:38:30PM +0100, Marc Zyngier wrote:
> Booting a KVM host in protected mode with kmemleak quickly results
> in a pretty bad crash, as kmemleak doesn't know that the HYP sections
> have been taken away. This is specially true for the BSS section,
> which is part of the kernel BSS section and registered at boot time
> by kmemleak itself.
> 
> Unregister the HYP part of the BSS before making that section
> HYP-private. The rest of the HYP-specific data is obtained via
> the page allocator or lives in other sections, none of which is
> subjected to kmemleak.
> 
> Fixes: 90134ac9cabb ("KVM: arm64: Protect the .hyp sections from the host")
> Reviewed-by: Quentin Perret <qperret at google.com>
> Signed-off-by: Marc Zyngier <maz at kernel.org>
> Cc: Catalin Marinas <catalin.marinas at arm.com>
> Cc: stable at vger.kernel.org # 5.13

Reviewed-by: Catalin Marinas <catalin.marinas at arm.com>