Messages in this thread | | | Subject | Re: [PATCH 04/11] hso: fix memory leak in hso_create_rfkill() | From | Oliver Neukum <> | Date | Tue, 20 Jan 2015 14:13:17 +0100 |
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On Tue, 2015-01-20 at 13:29 +0100, Olivier Sobrie wrote: > When the rfkill interface was created, a buffer containing the name > of the rfkill node was allocated. This buffer was never freed when the > device disappears. > > To fix the problem, we put the name given to rfkill_alloc() in > the hso_net structure. > > Signed-off-by: Olivier Sobrie <olivier@sobrie.be> > --- > drivers/net/usb/hso.c | 12 +++--------- > 1 file changed, 3 insertions(+), 9 deletions(-) > > diff --git a/drivers/net/usb/hso.c b/drivers/net/usb/hso.c > index 470ef9e..a49ac2e 100644 > --- a/drivers/net/usb/hso.c > +++ b/drivers/net/usb/hso.c > @@ -153,6 +153,7 @@ struct hso_net { > struct hso_device *parent; > struct net_device *net; > struct rfkill *rfkill; > + char name[8]; > > struct usb_endpoint_descriptor *in_endp; > struct usb_endpoint_descriptor *out_endp; > @@ -2467,27 +2468,20 @@ static void hso_create_rfkill(struct hso_device *hso_dev, > { > struct hso_net *hso_net = dev2net(hso_dev); > struct device *dev = &hso_net->net->dev; > - char *rfkn; > > - rfkn = kzalloc(20, GFP_KERNEL); > - if (!rfkn) > - dev_err(dev, "%s - Out of memory\n", __func__); > - > - snprintf(rfkn, 20, "hso-%d", > + snprintf(hso_net->name, sizeof(hso_net->name), "hso-%d", > interface->altsetting->desc.bInterfaceNumber);
That number is not unique. Indeed it will be identical for all devices.
Regards Oliver
-- Oliver Neukum <oneukum@suse.de>
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