From: Minghao Chi (CGEL ZTE) <chi.ming...@zte.com.cn>
Replace zero-length array with flexible-array member and make use
of the struct_size() helper in kzalloc(). For example:
struct viommu_request {
...
unsigned int len;
char buf[];
};
Make use of the struct_size() helper instead of an open-coded version
in order to avoid any potential type mistakes.
Reported-by: Zeal Robot <zea...@zte.com.cn>
Signed-off-by: Minghao Chi (CGEL ZTE) <chi.ming...@zte.com.cn>
---
drivers/iommu/virtio-iommu.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/iommu/virtio-iommu.c b/drivers/iommu/virtio-iommu.c
index f2aa34f57454..0996d9c7c358 100644
--- a/drivers/iommu/virtio-iommu.c
+++ b/drivers/iommu/virtio-iommu.c
@@ -231,7 +231,7 @@ static int __viommu_add_req(struct viommu_dev *viommu, void
*buf, size_t len,
if (write_offset <= 0)
return -EINVAL;
- req = kzalloc(sizeof(*req) + len, GFP_ATOMIC);
+ req = kzalloc(struct_size(req, buf, len), GFP_ATOMIC);
if (!req)
return -ENOMEM;
--
2.25.1
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