From: Sunghyun Jin <mcsmonk@xxxxxxxxx>
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@xxxxxxxxxxxxxxx> # 4.14+
Signed-off-by: Sunghyun Jin <mcsmonk@xxxxxxxxx>
Signed-off-by: Dennis Zhou <dennis@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
mm/percpu.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/mm/percpu.c
+++ b/mm/percpu.c
@@ -1300,7 +1300,7 @@ static struct pcpu_chunk * __init pcpu_a
/* allocate chunk */
alloc_size = sizeof(struct pcpu_chunk) +
- BITS_TO_LONGS(region_size >> PAGE_SHIFT);
+ BITS_TO_LONGS(region_size >> PAGE_SHIFT) * sizeof(unsigned long);
chunk = memblock_alloc(alloc_size, SMP_CACHE_BYTES);
if (!chunk)
panic("%s: Failed to allocate %zu bytes\n", __func__,
