
When a device ndo_start_xmit() calls again dev_queue_xmit(), lockdep can complain because dev_queue_xmit() is re-entered and the spinlocks protecting tx queues share a common lockdep class. Same issue was fixed for bonding/l2tp/ppp in commits0daa230302
("[PATCH] bonding: lockdep annotation")49ee49202b
("bonding: set qdisc_tx_busylock to avoid LOCKDEP splat")23d3b8bfb8
("net: qdisc busylock needs lockdep annotations ")303c07db48
("ppp: set qdisc_tx_busylock to avoid LOCKDEP splat ") Reported-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: Eric Dumazet <edumazet@google.com> Tested-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>