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Message-Id: <20200921162039.576994609@linuxfoundation.org>
Date: Mon, 21 Sep 2020 18:28:15 +0200
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-kernel@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
stable@...r.kernel.org, Sunghyun Jin <mcsmonk@...il.com>,
Dennis Zhou <dennis@...nel.org>
Subject: [PATCH 4.14 88/94] percpu: fix first chunk size calculation for populated bitmap
From: Sunghyun Jin <mcsmonk@...il.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@...r.kernel.org> # 4.14+
Signed-off-by: Sunghyun Jin <mcsmonk@...il.com>
Signed-off-by: Dennis Zhou <dennis@...nel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
mm/percpu.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/mm/percpu.c
+++ b/mm/percpu.c
@@ -1099,7 +1099,7 @@ 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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