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| author | Alexey Khoroshilov <khoroshilov@ispras.ru> | 2013-06-10 17:32:29 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2013-06-21 11:29:24 -0300 |
| commit | 090c65b694c362adb19ec9c27de216a808ee443c (patch) | |
| tree | 2c37b858da95626a410a738f68c0926d40ef42cb /drivers/media/usb/usbvision | |
| parent | b610b5928dc04095b9b24b83e4ddbb399d933611 (diff) | |
| download | linux-next-090c65b694c362adb19ec9c27de216a808ee443c.tar.gz | |
[media] usbvision-video: fix memory leak of alt_max_pkt_size
1. usbvision->alt_max_pkt_size is not deallocated anywhere.
2. if allocation of usbvision->alt_max_pkt_size fails,
there is no proper deallocation of already acquired resources.
The patch adds kfree(usbvision->alt_max_pkt_size) to
usbvision_release() as soon as other deallocations happen there.
It calls usbvision_release() if allocation of
usbvision->alt_max_pkt_size fails as soon as usbvision_release()
is safe to work with incompletely initialized usbvision structure.
Found by Linux Driver Verification project (linuxtesting.org).
Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media/usb/usbvision')
| -rw-r--r-- | drivers/media/usb/usbvision/usbvision-video.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/media/usb/usbvision/usbvision-video.c b/drivers/media/usb/usbvision/usbvision-video.c index f0a0b7f2da92..5c9e3123ad2e 100644 --- a/drivers/media/usb/usbvision/usbvision-video.c +++ b/drivers/media/usb/usbvision/usbvision-video.c @@ -1460,6 +1460,7 @@ static void usbvision_release(struct usb_usbvision *usbvision) usbvision_remove_sysfs(usbvision->vdev); usbvision_unregister_video(usbvision); + kfree(usbvision->alt_max_pkt_size); usb_free_urb(usbvision->ctrl_urb); @@ -1575,6 +1576,7 @@ static int usbvision_probe(struct usb_interface *intf, usbvision->alt_max_pkt_size = kmalloc(32 * usbvision->num_alt, GFP_KERNEL); if (usbvision->alt_max_pkt_size == NULL) { dev_err(&intf->dev, "usbvision: out of memory!\n"); + usbvision_release(usbvision); return -ENOMEM; } |