Messages in this thread Patch in this message | | | From | Levi Yun <> | Subject | [PATCH] [PATCH] memblock: Fix return sizeless candidate on __memblock_find_range_top_down. | Date | Wed, 4 Jan 2023 18:50:49 +0900 |
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__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@gmail.com> --- 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
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