__memblock_find_range_top_down can return start address of free region which sizeless then user speicified. To prevent the above case, add size check on candidate free region. Signed-off-by: Levi Yun <ppbuk5246@xxxxxxxxx> --- mm/memblock.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/mm/memblock.c b/mm/memblock.c index 511d4783dcf1..710e2ef8d67d 100644 --- a/mm/memblock.c +++ b/mm/memblock.c @@ -262,7 +262,7 @@ __memblock_find_range_top_down(phys_addr_t start, phys_addr_t end, continue; cand = round_down(this_end - size, align); - if (cand >= this_start) + if (cand >= this_start && this_end - cand >= size) return cand; } -- 2.35.1
