[PATCH] ASoC: SOF: Fix incorrect use of sizeof in sof_ipc3_do_rx_work()

[Xia Fukun]

Here hdr is a pointer, and we should measure the size of
struct sof_ipc_cmd_hdr.

Fixes: 12c41c779fad ("ASoC: SOF: Refactor rx function for fuzzing")
Signed-off-by: Xia Fukun <xiafukun@xxxxxxxxxx>
---
 sound/soc/sof/ipc3.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sound/soc/sof/ipc3.c b/sound/soc/sof/ipc3.c
index 2c5aac31e8b0..580960ff273d 100644
--- a/sound/soc/sof/ipc3.c
+++ b/sound/soc/sof/ipc3.c
@@ -1001,7 +1001,7 @@ void sof_ipc3_do_rx_work(struct snd_sof_dev *sdev, struct sof_ipc_cmd_hdr *hdr,
 
 	ipc3_log_header(sdev->dev, "ipc rx", hdr->cmd);
 
-	if (hdr->size < sizeof(hdr) || hdr->size > SOF_IPC_MSG_MAX_SIZE) {
+	if (hdr->size < sizeof(*hdr) || hdr->size > SOF_IPC_MSG_MAX_SIZE) {
 		dev_err(sdev->dev, "The received message size is invalid: %u\n",
 			hdr->size);
 		return;
-- 
2.17.1