From: Bui Quang Minh <minhquangbui99@gmail.com>
Date: Fri, 4 Dec 2020 06:24:49 +0000 (+0000)
Subject: USB: dummy-hcd: Fix uninitialized array use in init()
X-Git-Tag: rel_imx_5.10.35_2.0.0-somdevices.0~493^2~12
X-Git-Url: https://git.somdevices.com/?a=commitdiff_plain;h=5fb2a55ad3e0a7f3c5094c36a54c230355ed3d38;p=linux.git

USB: dummy-hcd: Fix uninitialized array use in init()

commit e90cfa813da7a527785033a0b247594c2de93dd8 upstream.

This error path

	err_add_pdata:
		for (i = 0; i < mod_data.num; i++)
			kfree(dum[i]);

can be triggered when not all dum's elements are initialized.

Fix this by initializing all dum's elements to NULL.

Acked-by: Alan Stern <stern@rowland.harvard.edu>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Bui Quang Minh <minhquangbui99@gmail.com>
Link: https://lore.kernel.org/r/1607063090-3426-1-git-send-email-minhquangbui99@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/usb/gadget/udc/dummy_hcd.c b/drivers/usb/gadget/udc/dummy_hcd.c
index 53a227217f1c..99c1ebe86f6a 100644
--- a/drivers/usb/gadget/udc/dummy_hcd.c
+++ b/drivers/usb/gadget/udc/dummy_hcd.c
@@ -2734,7 +2734,7 @@ static int __init init(void)
 {
 	int	retval = -ENOMEM;
 	int	i;
-	struct	dummy *dum[MAX_NUM_UDC];
+	struct	dummy *dum[MAX_NUM_UDC] = {};
 
 	if (usb_disabled())
 		return -ENODEV;