On 07.04.22 11:32, Juergen Gross wrote:
Since commit 9d3be21bf9c0 ("mm, page_alloc: simplify zonelist initialization") only zones with free memory are included in a built zonelist. This is problematic when e.g. all memory of a zone has been ballooned out.
Use populated_zone() when building a zonelist as it has been done before that commit.
Cc: stable@vger.kernel.org Fixes: 9d3be21bf9c0 ("mm, page_alloc: simplify zonelist initialization") Reported-by: Marek Marczykowski-Górecki marmarek@invisiblethingslab.com Signed-off-by: Juergen Gross jgross@suse.com
mm/page_alloc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/mm/page_alloc.c b/mm/page_alloc.c index bdc8f60ae462..3d0662af3289 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -6128,7 +6128,7 @@ static int build_zonerefs_node(pg_data_t *pgdat, struct zoneref *zonerefs) do { zone_type--; zone = pgdat->node_zones + zone_type;
if (managed_zone(zone)) {
if (populated_zone(zone)) { zoneref_set_zone(zone, &zonerefs[nr_zones++]); check_highest_zone(zone_type);
Let's see if we have to find another way to properly handle fadump.
Acked-by: David Hildenbrand david@redhat.com