> On 10-Jan-2023, at 6:17 PM, Michael Ellerman wrote:
>
> If a relocatable kernel is loaded at a non-zero address and told not to
> relocate to zero (kdump or RELOCATABLE_TEST), the mapping of the
> interrupt code at zero is left with RWX permissions.
>
> That is a security weakness, and
If a relocatable kernel is loaded at a non-zero address and told not to
relocate to zero (kdump or RELOCATABLE_TEST), the mapping of the
interrupt code at zero is left with RWX permissions.
That is a security weakness, and leads to a warning at boot if
CONFIG_DEBUG_WX is enabled:
powerpc/mm:
