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

From: Bui Quang Minh
Date: Fri Dec 04 2020 - 01:26:17 EST


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.

Signed-off-by: Bui Quang Minh <minhquangbui99@xxxxxxxxx>
---
drivers/usb/gadget/udc/dummy_hcd.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/usb/gadget/udc/dummy_hcd.c b/drivers/usb/gadget/udc/dummy_hcd.c
index 0eeaead..a2cf009 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;
--
2.7.4