On Wed, Dec 09, 2020 at 11:43:03PM +0200, Mike Rapoport wrote:
> From: Mike Rapoport <r...@linux.ibm.com>
>
> memblock does not require that the reserved memory ranges will be a subset
> of memblock.memory.
>
> As the result there maybe reserved pages that are not in the range of any
> zone or node because zone and node boundaries are detected based on
> memblock.memory and pages that only present in memblock.reserved are not
> taken into account during zone/node size detection.
>
> Make sure that all ranges in memblock.reserved are added to memblock.memory
> before calculating node and zone boundaries.
>
> Fixes: 73a6e474cb37 ("mm: memmap_init: iterate over memblock regions rather
> that check each PFN")
> Reported-by: Andrea Arcangeli <aarca...@redhat.com>
> Signed-off-by: Mike Rapoport <r...@linux.ibm.com>
> ---
> include/linux/memblock.h | 1 +
> mm/memblock.c | 24 ++++++++++++++++++++++++
> mm/page_alloc.c | 7 +++++++
> 3 files changed, 32 insertions(+)
<formletter>
This is not the correct way to submit patches for inclusion in the
stable kernel tree. Please read:
https://www.kernel.org/doc/html/latest/process/stable-kernel-rules.html
for how to do this properly.
</formletter>
