[PATCH] unix: use kvmalloc_array() for BPF iterator batches

[Weimin Xiong]

Use kvmalloc_array() instead of open-coding the element-size
multiplication when allocating the Unix-domain BPF iterator batch.

Signed-off-by: Weimin Xiong <xiongwm2026@xxxxxxx>
---
diff --git a/net/unix/af_unix.c b/net/unix/af_unix.c
index f7a9d55ee..6664ead46 100644
--- a/net/unix/af_unix.c
+++ b/net/unix/af_unix.c
@@ -3659,8 +3659,8 @@ static int bpf_iter_unix_realloc_batch(struct bpf_unix_iter_state *iter,
 {
 	struct sock **new_batch;
 
-	new_batch = kvmalloc(sizeof(*new_batch) * new_batch_sz,
-			     GFP_USER | __GFP_NOWARN);
+	new_batch = kvmalloc_array(new_batch_sz, sizeof(*new_batch),
+				   GFP_USER | __GFP_NOWARN);
 	if (!new_batch)
 		return -ENOMEM;