net: usb: Fix memory leak on Tx data path
Driver anchors the tx urbs and defers the urb submission if a transmit request comes when the interface is suspended. Anchoring urb increments the urb reference count. These deferred urbs are later accessed by calling usb_get_from_anchor() for submission during interface resume. usb_get_from_anchor() unanchors the urb but urb reference count remains same. This causes the urb reference count to remain non-zero after usb_free_urb() gets called and urb never gets freed. Hence call usb_put_urb() after anchoring the urb to properly balance the reference count for these deferred urbs. Also, unanchor these deferred urbs during disconnect, to free them up. Signed-off-by:Hemant Kumar <hemantk@codeaurora.org> Acked-by:
Oliver Neukum <oneukum@suse.de> Signed-off-by:
David S. Miller <davem@davemloft.net>
parent
bfc0d8c3
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