============================================
WARNING: possible recursive locking detected
syzkaller #0 Not tainted
--------------------------------------------
kworker/u8:7/31638 is trying to acquire lock:
ffff8881bdb7cd58 (&qdisc_xmit_lock_key#4){+.-.}-{3:3}, at: sch_direct_xmit+0x15f/0x4c0

but task is already holding lock:
ffff8881aa9b2d58 (&qdisc_xmit_lock_key#4){+.-.}-{3:3}, at: sch_direct_xmit+0x15f/0x4c0

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

locks held by kworker/u8:7/31638: 10, last CPU#1:
 #0: ffff8881a9b3c940 ((wq_completion)bond46#3){+.+.}-{0:0}, at: process_scheduled_works+0x97a/0x1630
 #1: ffffc90006797c40 ((work_completion)(&(&bond->alb_work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x97a/0x1630
 #2: ffffffff8ed5c6e0 (rcu_read_lock){....}-{1:3}, at: bond_alb_monitor+0xf0/0x1840
 #3: ffffffff8ed5c740 (rcu_read_lock_bh){....}-{1:3}, at: __dev_queue_xmit+0x29b/0x3820
 #4: ffff888120390228 (dev->qdisc_tx_busylock ?: &qdisc_tx_busylock#5){+...}-{3:3}, at: __dev_queue_xmit+0x1143/0x3820
 #5: ffff8881aa9b2d58 (&qdisc_xmit_lock_key#4){+.-.}-{3:3}, at: sch_direct_xmit+0x15f/0x4c0
 #6: ffffffff8ed5c6e0 (rcu_read_lock){....}-{1:3}, at: ip_output+0x5a/0x450
 #7: ffffffff8ed5c6e0 (rcu_read_lock){....}-{1:3}, at: ip_finish_output2+0x3de/0x10b0
 #8: ffffffff8ed5c740 (rcu_read_lock_bh){....}-{1:3}, at: __dev_queue_xmit+0x29b/0x3820
 #9: ffff888105aef228 (dev->qdisc_tx_busylock ?: &qdisc_tx_busylock#5){+...}-{3:3}, at: __dev_queue_xmit+0x1143/0x3820

stack backtrace:
CPU: 1 UID: 0 PID: 31638 Comm: kworker/u8:7 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: bond46 bond_alb_monitor
Call Trace:
 <TASK>
 dump_stack_lvl+0xe8/0x150
 print_deadlock_bug+0x27a/0x290
 __lock_acquire+0x261c/0x2e50
 lock_acquire+0x115/0x350
 _raw_spin_lock+0x2e/0x40
 sch_direct_xmit+0x15f/0x4c0
 __dev_queue_xmit+0x177f/0x3820
 ip_finish_output2+0xc4b/0x10b0
 ip_output+0x29f/0x450
 iptunnel_xmit+0x626/0xd10
 ip_tunnel_xmit+0x195b/0x2040
 erspan_xmit+0xb6a/0x1620
 dev_hard_start_xmit+0x2cd/0x830
 sch_direct_xmit+0x257/0x4c0
 __dev_queue_xmit+0x177f/0x3820
 alb_send_lp_vid+0x348/0x550
 alb_send_learning_packets+0x12c/0x300
 bond_alb_monitor+0x3da/0x1840
 process_scheduled_works+0xc3d/0x1630
 worker_thread+0xa47/0xfb0
 kthread+0x38b/0x480
 ret_from_fork+0x514/0xb70
 ret_from_fork_asm+0x1a/0x30
 </TASK>
netdevsim netdevsim5 eth1: unset [0, 0] type 1 family 0 port 8472 - 0
netdevsim netdevsim5 eth2: unset [0, 0] type 1 family 0 port 8472 - 0
netdevsim netdevsim5 eth3: unset [0, 0] type 1 family 0 port 8472 - 0
netdevsim netdevsim5 eth0: unset [0, 0] type 1 family 0 port 8472 - 0
