>Skb dequeuing may end up with returning NULL if a queue is empty, >which, in turn, may end up with further null pointer dereference. > >Fix it by checking the return value of skb dequeuing end returning >before the pointer dereference. skbs in csk->skbq are preallocated for critical events in cxgbit_alloc_csk_skb(), so there is no need to check for NULL.
