diff mbox series

[4.19,42/49] percpu: fix first chunk size calculation for populated bitmap

Message ID 20200921162036.525238100@linuxfoundation.org
State New
Headers show
Series None | expand

Commit Message

gregkh@linuxfoundation.org Sept. 21, 2020, 4:28 p.m. UTC 
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(-)
diff mbox series

Patch

--- 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);