bond11: (slave gretap5): making interface the new active one
============================================
WARNING: possible recursive locking detected
syzkaller #0 Not tainted
--------------------------------------------
syz.3.16445/11547 is trying to acquire lock:
ffff8881155c5958 (&qdisc_xmit_lock_key#3){+.-.}-{3:3}, at: sch_direct_xmit+0x153/0x4b0

but task is already holding lock:
ffff88816f7c7558 (&qdisc_xmit_lock_key#3){+.-.}-{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#3);
  lock(&qdisc_xmit_lock_key#3);

 *** DEADLOCK ***

 May be due to missing lock nesting notation

10 locks held by syz.3.16445/11547:
 #0: ffffffff8f83c0f8 (&ops->srcu#2){.+.+}-{0:0}, at: rtnl_link_ops_get+0x23/0x250
 #1: ffffffff8f311c48 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_newlink+0x8ec/0x1c90
 #2: ffffffff8df41a80 (rcu_read_lock_bh){....}-{1:3}, at: __dev_queue_xmit+0x289/0x3140
 #3: ffff88817009e228 (dev->qdisc_tx_busylock ?: &qdisc_tx_busylock#3){+...}-{3:3}, at: __dev_queue_xmit+0xeb4/0x3140
 #4: ffff88816f7c7558 (&qdisc_xmit_lock_key#3){+.-.}-{3:3}, at: sch_direct_xmit+0x153/0x4b0
 #5: ffffffff8df41a20 (rcu_read_lock){....}-{1:3}, at: ip_output+0x5b/0x450
 #6: ffffffff8df41a20 (rcu_read_lock){....}-{1:3}, at: ip_finish_output2+0x3d0/0x1000
 #7: ffffffff8df41a20 (rcu_read_lock){....}-{1:3}, at: arp_xmit+0x23/0x270
 #8: ffffffff8df41a80 (rcu_read_lock_bh){....}-{1:3}, at: __dev_queue_xmit+0x289/0x3140
 #9: ffff888112351228 (dev->qdisc_tx_busylock ?: &qdisc_tx_busylock#3){+...}-{3:3}, at: __dev_queue_xmit+0xeb4/0x3140

stack backtrace:
CPU: 1 UID: 0 PID: 11547 Comm: syz.3.16445 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
Call Trace:
 <TASK>
 dump_stack_lvl+0xe8/0x150
 print_deadlock_bug+0x279/0x290
 __lock_acquire+0x2540/0x2cf0
 lock_acquire+0x107/0x340
 _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+0xbbd/0xe10
 __neigh_event_send+0xf3e/0x1520
 neigh_resolve_output+0x198/0x750
 ip_finish_output2+0xbb6/0x1000
 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_handle_active_change+0xa09/0xec0
 bond_change_active_slave+0x1044/0x35e0
 bond_select_active_slave+0x8d2/0xce0
 bond_enslave+0x2341/0x3ac0
 do_set_master+0x533/0x6d0
 rtnl_newlink_create+0x677/0xb00
 rtnl_newlink+0x16e7/0x1c90
 rtnetlink_rcv_msg+0x7cf/0xb70
 netlink_rcv_skb+0x208/0x470
 netlink_unicast+0x82f/0x9e0
 netlink_sendmsg+0x805/0xb30
 __sock_sendmsg+0x21c/0x270
 ____sys_sendmsg+0x505/0x820
 ___sys_sendmsg+0x21f/0x2a0
 __x64_sys_sendmsg+0x19b/0x260
 do_syscall_64+0xec/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f094bb8f7c9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f094caed038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f094bde6090 RCX: 00007f094bb8f7c9
RDX: 0000000000000040 RSI: 00002000000000c0 RDI: 0000000000000007
RBP: 00007f094bbf297f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f094bde6128 R14: 00007f094bde6090 R15: 00007ffd6a4bfa38
 </TASK>
bond11: (slave gretap5): Enslaving as an active interface with an up link
syz.3.16445 (11547) used greatest stack depth: 16904 bytes left
