============================================
WARNING: possible recursive locking detected
syzkaller #0 Not tainted
--------------------------------------------
kworker/u8:1/12500 is trying to acquire lock:
ffff888113010558 (&qdisc_xmit_lock_key#4){+.-.}-{3:3}, at: sch_direct_xmit+0x153/0x4b0

but task is already holding lock:
ffff8881750c5558 (&qdisc_xmit_lock_key#4){+.-.}-{3:3}, at: sch_direct_xmit+0x153/0x4b0

other info that might help us debug this:
 Possible unsafe locking scenario:

       CPU0
       ----
  lock(&qdisc_xmit_lock_key#4);
  lock(&qdisc_xmit_lock_key#4);

 *** DEADLOCK ***

 May be due to missing lock nesting notation

11 locks held by kworker/u8:1/12500:
 #0: ffff8881a376e948 ((wq_completion)bond8#2){+.+.}-{0:0}, at: process_scheduled_works+0x9b4/0x1770
 #1: ffffc90004557b80 ((work_completion)(&(&bond->alb_work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x9ef/0x1770
 #2: ffffffff8df419e0 (rcu_read_lock){....}-{1:3}, at: bond_alb_monitor+0xf1/0x1800
 #3: ffffffff8df41a40 (rcu_read_lock_bh){....}-{1:3}, at: __dev_queue_xmit+0x289/0x3140
 #4: ffff8881607c2228 (dev->qdisc_tx_busylock ?: &qdisc_tx_busylock#3){+...}-{3:3}, at: __dev_queue_xmit+0xeb4/0x3140
 #5: ffff8881750c5558 (&qdisc_xmit_lock_key#4){+.-.}-{3:3}, at: sch_direct_xmit+0x153/0x4b0
 #6: ffffffff8df419e0 (rcu_read_lock){....}-{1:3}, at: ip_output+0x5b/0x450
 #7: ffffffff8df419e0 (rcu_read_lock){....}-{1:3}, at: ip_finish_output2+0x452/0x1160
 #8: ffffffff8df419e0 (rcu_read_lock){....}-{1:3}, at: arp_xmit+0x23/0x270
 #9: ffffffff8df41a40 (rcu_read_lock_bh){....}-{1:3}, at: __dev_queue_xmit+0x289/0x3140
 #10: ffff88819f69e228 (dev->qdisc_tx_busylock ?: &qdisc_tx_busylock#3){+...}-{3:3}, at: __dev_queue_xmit+0xeb4/0x3140

stack backtrace:
CPU: 0 UID: 0 PID: 12500 Comm: kworker/u8:1 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
Workqueue: bond8 bond_alb_monitor
Call Trace:
 <TASK>
 dump_stack_lvl+0x189/0x250
 print_deadlock_bug+0x279/0x290
 __lock_acquire+0x2540/0x2cf0
 lock_acquire+0x117/0x340
 _raw_spin_lock+0x2e/0x40
 sch_direct_xmit+0x153/0x4b0
 __dev_queue_xmit+0x136f/0x3140
 NF_HOOK+0x310/0x3a0
 arp_xmit+0x16c/0x270
 arp_solicit+0xc08/0xe70
 __neigh_event_send+0xf3e/0x1520
 neigh_resolve_output+0x198/0x750
 ip_finish_output2+0xd40/0x1160
 ip_output+0x29f/0x450
 iptunnel_xmit+0x5f8/0xa90
 ip_tunnel_xmit+0x1c41/0x2390
 gre_tap_xmit+0x590/0x7a0
 dev_hard_start_xmit+0x2cd/0x800
 sch_direct_xmit+0x241/0x4b0
 __dev_queue_xmit+0x136f/0x3140
 alb_send_lp_vid+0x328/0x530
 alb_send_learning_packets+0x10d/0x2c0
 bond_alb_monitor+0x3e4/0x1800
 process_scheduled_works+0xad1/0x1770
 worker_thread+0x8a0/0xda0
 kthread+0x711/0x8a0
 ret_from_fork+0x599/0xb30
 ret_from_fork_asm+0x1a/0x30
 </TASK>
