usb ethernet gadget, workaround network stack API glitch
Another workaround for the glitch in the network layer, whereby one call
ignores the (otherwise kernel-wide) convention that free() calls should
not oops when passed nulls. This code already handles that API glitch in
most other paths.
From: Erik Hovland <erik@hovland.org>
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
diff --git a/drivers/usb/gadget/ether.c b/drivers/usb/gadget/ether.c
index 8f9f217..96df841 100644
--- a/drivers/usb/gadget/ether.c
+++ b/drivers/usb/gadget/ether.c
@@ -1735,7 +1735,8 @@
defer_kevent (dev, WORK_RX_MEMORY);
if (retval) {
DEBUG (dev, "rx submit --> %d\n", retval);
- dev_kfree_skb_any (skb);
+ if (skb)
+ dev_kfree_skb_any(skb);
spin_lock(&dev->req_lock);
list_add (&req->list, &dev->rx_reqs);
spin_unlock(&dev->req_lock);