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percpu: fix first chunk size calculation for populated bitmap 

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: 8ab16c43ea ("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>
This commit is contained in:
Sunghyun Jin 2020-09-03 21:41:16 +09:00 committed by Greg Kroah-Hartman
parent 32f60ecbb9
commit e44bd84cd2
1 changed files with 1 additions and 1 deletions
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2
mm/percpu.c
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@ -1328,7 +1328,7 @@ static struct pcpu_chunk * __init pcpu_alloc_first_chunk(unsigned long tmp_addr,
/* 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__,