Commit c12c3e15 authored Mar 23, 2026 by Mike Rapoport (Microsoft)

memblock: reserve_mem: fix end caclulation in reserve_mem_release_by_name()

free_reserved_area() expects end parameter to point to the first address
after the area, but reserve_mem_release_by_name() passes it the last
address inside the area.

Remove subtraction of one in calculation of the area end.

Fixes: 74e2498c ("mm/memblock: Add reserved memory release function")
Link: https://patch.msgid.link/20260323074836.3653702-2-rppt@kernel.org


Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org>

parent 8b7b8538

mm/memblock.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -2460,7 +2460,7 @@ int reserve_mem_release_by_name(const char *name)
		return 0;

		start = phys_to_virt(map->start);
		end = start + map->size - 1;
		end = start + map->size;
		snprintf(buf, sizeof(buf), "reserve_mem:%s", name);
		free_reserved_area(start, end, 0, buf);
		map->size = 0;