Re: [EXT] INFO: trying to register non-static key in del_timer_sync (2)

[Andrey Konovalov]

On Wed, Jun 12, 2019 at 6:03 PM Ganapathi Bhat <gbhat@xxxxxxxxxxx> wrote:
>
> Hi Dmitry,
>
> We have a patch to fix this: https://patchwork.kernel.org/patch/10990275/

Hi Ganapathi,

Great, thanks for working on this!

We can ask syzbot to test the fix:

#syz test: https://github.com/google/kasan.git usb-fuzzer

Thanks!

>
> Regards,
> Ganapathi
diff --git a/drivers/net/wireless/marvell/mwifiex/usb.c b/drivers/net/wireless/marvell/mwifiex/usb.c
index c2365ee..939f1e9 100644
--- a/drivers/net/wireless/marvell/mwifiex/usb.c
+++ b/drivers/net/wireless/marvell/mwifiex/usb.c
@@ -1348,6 +1348,8 @@ static void mwifiex_usb_cleanup_tx_aggr(struct mwifiex_adapter *adapter)
 
 	for (idx = 0; idx < MWIFIEX_TX_DATA_PORT; idx++) {
 		port = &card->port[idx];
+		if (!port->tx_data_ep)
+			continue;
 		if (adapter->bus_aggr.enable)
 			while ((skb_tmp =
 				skb_dequeue(&port->tx_aggr.aggr_list)))
@@ -1365,8 +1367,6 @@ static void mwifiex_unregister_dev(struct mwifiex_adapter *adapter)
 
 	mwifiex_usb_free(card);
 
-	mwifiex_usb_cleanup_tx_aggr(adapter);
-
 	card->adapter = NULL;
 }
 
@@ -1510,7 +1510,7 @@ static int mwifiex_prog_fw_w_helper(struct mwifiex_adapter *adapter,
 static int mwifiex_usb_dnld_fw(struct mwifiex_adapter *adapter,
 			struct mwifiex_fw_image *fw)
 {
-	int ret;
+	int ret = 0;
 	struct usb_card_rec *card = (struct usb_card_rec *)adapter->card;
 
 	if (card->usb_boot_state == USB8XXX_FW_DNLD) {
@@ -1523,10 +1523,6 @@ static int mwifiex_usb_dnld_fw(struct mwifiex_adapter *adapter,
 			return -1;
 	}
 
-	ret = mwifiex_usb_rx_init(adapter);
-	if (!ret)
-		ret = mwifiex_usb_tx_init(adapter);
-
 	return ret;
 }
 
@@ -1584,7 +1580,29 @@ static void mwifiex_usb_submit_rem_rx_urbs(struct mwifiex_adapter *adapter)
 	return 0;
 }
 
+static int mwifiex_init_usb(struct mwifiex_adapter *adapter)
+{
+	struct usb_card_rec *card = (struct usb_card_rec *)adapter->card;
+	int ret = 0;
+
+	if (card->usb_boot_state == USB8XXX_FW_DNLD)
+		return 0;
+
+	ret = mwifiex_usb_rx_init(adapter);
+	if (!ret)
+		ret = mwifiex_usb_tx_init(adapter);
+
+	return ret;
+}
+
+static void mwifiex_cleanup_usb(struct mwifiex_adapter *adapter)
+{
+	mwifiex_usb_cleanup_tx_aggr(adapter);
+}
+
 static struct mwifiex_if_ops usb_ops = {
+	.init_if =		mwifiex_init_usb,
+	.cleanup_if =		mwifiex_cleanup_usb,
 	.register_dev =		mwifiex_register_dev,
 	.unregister_dev =	mwifiex_unregister_dev,
 	.wakeup =		mwifiex_pm_wakeup_card,