diff options
| author | Anton Vasilyev <vasilyev@ispras.ru> | 2017-08-10 18:27:44 +0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@s-opensource.com> | 2017-08-27 13:57:13 +0300 |
| commit | be90cc8e4ac08bcb4ca517cd4ae25aa8441e2d88 (patch) | |
| tree | 0f5302124bf3ebda0ff62cb96e1db1468ecb8e13 /drivers | |
| parent | e5d9ce4ddea934d1243747bfc142749ba6ff0c5a (diff) | |
| download | linux-be90cc8e4ac08bcb4ca517cd4ae25aa8441e2d88.tar.xz | |
media: dvb-usb: Add memory free on error path in dw2102_probe()
If dw2102_probe() fails on dvb_usb_device_init(), then memleak occurs.
The patch adds deallocation to the error path.
Found by Linux Driver Verification project (linuxtesting.org).
Signed-off-by: Anton Vasilyev <vasilyev@ispras.ru>
Reviewed-by: Enrico Mioso <mrkiko.rs@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/media/usb/dvb-usb/dw2102.c | 39 |
1 files changed, 22 insertions, 17 deletions
diff --git a/drivers/media/usb/dvb-usb/dw2102.c b/drivers/media/usb/dvb-usb/dw2102.c index 11109b1e641f..46c60f90e651 100644 --- a/drivers/media/usb/dvb-usb/dw2102.c +++ b/drivers/media/usb/dvb-usb/dw2102.c @@ -2335,10 +2335,12 @@ static struct dvb_usb_device_properties tt_s2_4600_properties = { static int dw2102_probe(struct usb_interface *intf, const struct usb_device_id *id) { + int retval = -ENOMEM; p1100 = kmemdup(&s6x0_properties, sizeof(struct dvb_usb_device_properties), GFP_KERNEL); if (!p1100) - return -ENOMEM; + goto err0; + /* copy default structure */ /* fill only different fields */ p1100->firmware = P1100_FIRMWARE; @@ -2349,10 +2351,9 @@ static int dw2102_probe(struct usb_interface *intf, s660 = kmemdup(&s6x0_properties, sizeof(struct dvb_usb_device_properties), GFP_KERNEL); - if (!s660) { - kfree(p1100); - return -ENOMEM; - } + if (!s660) + goto err1; + s660->firmware = S660_FIRMWARE; s660->num_device_descs = 3; s660->devices[0] = d660; @@ -2362,11 +2363,9 @@ static int dw2102_probe(struct usb_interface *intf, p7500 = kmemdup(&s6x0_properties, sizeof(struct dvb_usb_device_properties), GFP_KERNEL); - if (!p7500) { - kfree(p1100); - kfree(s660); - return -ENOMEM; - } + if (!p7500) + goto err2; + p7500->firmware = P7500_FIRMWARE; p7500->devices[0] = d7500; p7500->rc.core.rc_query = prof_rc_query; @@ -2376,12 +2375,9 @@ static int dw2102_probe(struct usb_interface *intf, s421 = kmemdup(&su3000_properties, sizeof(struct dvb_usb_device_properties), GFP_KERNEL); - if (!s421) { - kfree(p1100); - kfree(s660); - kfree(p7500); - return -ENOMEM; - } + if (!s421) + goto err3; + s421->num_device_descs = 2; s421->devices[0] = d421; s421->devices[1] = d632; @@ -2411,7 +2407,16 @@ static int dw2102_probe(struct usb_interface *intf, THIS_MODULE, NULL, adapter_nr)) return 0; - return -ENODEV; + retval = -ENODEV; + kfree(s421); +err3: + kfree(p7500); +err2: + kfree(s660); +err1: + kfree(p1100); +err0: + return retval; } static void dw2102_disconnect(struct usb_interface *intf) |