It doesn't make any difference to runtime but I've switched these two
checks to make my static checker happy.
The problem is that "buffer->data_size" is user controlled and if it's
less than "sizeo(*hdr)" then that means "offset" can be more than
"buffer->data_size". It's just cleaner to check it in the other order.
Signed-off-by: Dan Carpenter <dan.carpen...@oracle.com>
diff --git a/drivers/android/binder.c b/drivers/android/binder.c
index 764b63a5aade..00322b146469 100644
--- a/drivers/android/binder.c
+++ b/drivers/android/binder.c
@@ -2058,8 +2058,8 @@ static size_t binder_validate_object(struct binder_buffer
*buffer, u64 offset)
struct binder_object_header *hdr;
size_t object_size = 0;
- if (offset > buffer->data_size - sizeof(*hdr) ||
- buffer->data_size < sizeof(*hdr) ||
+ if (buffer->data_size < sizeof(*hdr) ||
+ offset > buffer->data_size - sizeof(*hdr) ||
!IS_ALIGNED(offset, sizeof(u32)))
return 0;
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