Re: [PATCH 08/26] virtio-mem: use array_size

From: David Hildenbrand
Date: Mon Jun 26 2023 - 03:41:18 EST


On 23.06.23 23:14, Julia Lawall wrote:
Use array_size to protect against multiplication overflows.

The changes were done using the following Coccinelle semantic patch:

// <smpl>
@@
expression E1, E2;
constant C1, C2;
identifier alloc = {vmalloc,vzalloc};
@@
(
alloc(C1 * C2,...)
|
alloc(
- (E1) * (E2)
+ array_size(E1, E2)
,...)
)
// </smpl>

Signed-off-by: Julia Lawall <Julia.Lawall@xxxxxxxx>

---
drivers/virtio/virtio_mem.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)



Reviewed-by: David Hildenbrand <david@xxxxxxxxxx>

--
Cheers,

David / dhildenb