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Subject[PATCH 4.19 42/49] percpu: fix first chunk size calculation for populated bitmap
Date
From: Sunghyun Jin <mcsmonk@gmail.com>

commit b3b33d3c43bbe0177d70653f4e889c78cc37f097 upstream.

Variable populated, which is a member of struct pcpu_chunk, is used as a
unit of size of unsigned long.
However, size of populated is miscounted. So, I fix this minor part.

Fixes: 8ab16c43ea79 ("percpu: change the number of pages marked in the first_chunk pop bitmap")
Cc: <stable@vger.kernel.org> # 4.14+
Signed-off-by: Sunghyun Jin <mcsmonk@gmail.com>
Signed-off-by: Dennis Zhou <dennis@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
mm/percpu.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

--- a/mm/percpu.c
+++ b/mm/percpu.c
@@ -1103,7 +1103,7 @@ static struct pcpu_chunk * __init pcpu_a

/* allocate chunk */
chunk = memblock_virt_alloc(sizeof(struct pcpu_chunk) +
- BITS_TO_LONGS(region_size >> PAGE_SHIFT),
+ BITS_TO_LONGS(region_size >> PAGE_SHIFT) * sizeof(unsigned long),
0);

INIT_LIST_HEAD(&chunk->list);

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