erspan2: entered allmulticast mode
bond43: (slave erspan2): making interface the new active one
erspan2: entered promiscuous mode
============================================
WARNING: possible recursive locking detected
syzkaller #0 Not tainted
--------------------------------------------
syz.2.3493/19235 is trying to acquire lock:
ffff88816daf4958 (&qdisc_xmit_lock_key#3){+.-.}-{3:3}, at: sch_direct_xmit+0x15f/0x4c0

but task is already holding lock:
ffff888110b74158 (&qdisc_xmit_lock_key#3){+.-.}-{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#3);
  lock(&qdisc_xmit_lock_key#3);

 *** DEADLOCK ***

 May be due to missing lock nesting notation

10 locks held by syz.2.3493/19235:
 #0: ffffffff8fd07ae8 (&ops->srcu#2){.+.+}-{0:0}, at: rtnl_link_ops_get+0x23/0x250
 #1: ffffffff8f7a8988 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_newlink+0x8a1/0x1be0
 #2: ffffffff8e35a380 (rcu_read_lock_bh){....}-{1:3}, at: __dev_queue_xmit+0x2a7/0x32b0
 #3: ffff888120d20228 (dev->qdisc_tx_busylock ?: &qdisc_tx_busylock#5){+...}-{3:3}, at: __dev_queue_xmit+0xf23/0x32b0
 #4: ffff888110b74158 (&qdisc_xmit_lock_key#3){+.-.}-{3:3}, at: sch_direct_xmit+0x15f/0x4c0
 #5: ffffffff8e35a320 (rcu_read_lock){....}-{1:3}, at: ip_output+0x5b/0x450
 #6: ffffffff8e35a320 (rcu_read_lock){....}-{1:3}, at: ip_finish_output2+0x3d0/0xff0
 #7: ffffffff8e35a320 (rcu_read_lock){....}-{1:3}, at: arp_xmit+0x23/0x270
 #8: ffffffff8e35a380 (rcu_read_lock_bh){....}-{1:3}, at: __dev_queue_xmit+0x2a7/0x32b0
 #9: ffff88816d06b228 (dev->qdisc_tx_busylock ?: &qdisc_tx_busylock#5){+...}-{3:3}, at: __dev_queue_xmit+0xf23/0x32b0

stack backtrace:
CPU: 0 UID: 0 PID: 19235 Comm: syz.2.3493 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+0x253f/0x2cf0
 lock_acquire+0x106/0x330
 _raw_spin_lock+0x2e/0x40
 sch_direct_xmit+0x15f/0x4c0
 __dev_queue_xmit+0x13c4/0x32b0
 NF_HOOK+0x33a/0x3c0
 arp_xmit+0x16c/0x270
 arp_solicit+0xbe0/0xe40
 __neigh_event_send+0xf05/0x14a0
 neigh_resolve_output+0x198/0x750
 ip_finish_output2+0xbb6/0xff0
 ip_output+0x29f/0x450
 iptunnel_xmit+0x59f/0xa00
 ip_tunnel_xmit+0x1cea/0x2430
 __gre_xmit+0x19e/0x240
 erspan_xmit+0xa87/0x1440
 dev_hard_start_xmit+0x2cd/0x7f0
 sch_direct_xmit+0x251/0x4c0
 __dev_queue_xmit+0x13c4/0x32b0
 alb_send_lp_vid+0x348/0x550
 alb_send_learning_packets+0x12c/0x300
 alb_fasten_mac_swap+0x639/0xf60
 bond_alb_handle_active_change+0xc6d/0xf30
 bond_change_active_slave+0x1067/0x35e0
 bond_select_active_slave+0x909/0xd40
 bond_enslave+0x2172/0x3a90
 do_set_master+0x533/0x6d0
 rtnl_newlink_create+0x6af/0xb70
 rtnl_newlink+0x1666/0x1be0
 rtnetlink_rcv_msg+0x7d5/0xbe0
 netlink_rcv_skb+0x232/0x4b0
 netlink_unicast+0x80f/0x9b0
 netlink_sendmsg+0x813/0xb40
 __sock_sendmsg+0x21c/0x270
 ____sys_sendmsg+0x4d7/0x810
 ___sys_sendmsg+0x2a5/0x360
 __x64_sys_sendmsg+0x1bd/0x2a0
 do_syscall_64+0xe2/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f27d079acb9
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f27d167b028 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f27d0a15fa0 RCX: 00007f27d079acb9
RDX: 0000000000000000 RSI: 00002000000000c0 RDI: 0000000000000005
RBP: 00007f27d0808bf7 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f27d0a16038 R14: 00007f27d0a15fa0 R15: 00007ffdb6d6b668
 </TASK>
bond43: (slave erspan2): Enslaving as an active interface with an up link
syz.2.3493 (19235) used greatest stack depth: 16456 bytes left
