======================================================
WARNING: possible circular locking dependency detected
syzkaller #0 Not tainted
------------------------------------------------------
kworker/0:3/5004 is trying to acquire lock:
ffff888119d41558 (&qdisc_xmit_lock_key#4){+.-.}-{3:3}, at: sch_direct_xmit+0x15f/0x4c0

but task is already holding lock:
ffff8881104a1070 (&hsr->seqnr_lock){+.-.}-{3:3}, at: hsr_dev_xmit+0x237/0x360

which lock already depends on the new lock.


the existing dependency chain (in reverse order) is:

-> #1 (&hsr->seqnr_lock){+.-.}-{3:3}:
       _raw_spin_lock_bh+0x36/0x50
       hsr_dev_xmit+0x237/0x360
       dev_hard_start_xmit+0x2cd/0x830
       __dev_queue_xmit+0x14c0/0x3820
       NF_HOOK+0x33a/0x3c0
       arp_xmit+0x16c/0x270
       arp_solicit+0xbdc/0xe40
       __neigh_event_send+0xf0c/0x1510
       neigh_resolve_output+0x1a1/0x720
       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
       alb_fasten_mac_swap+0x45d/0xf70
       bond_alb_handle_active_change+0xbc5/0xe50
       bond_change_active_slave+0x1098/0x36d0
       bond_select_active_slave+0x8a6/0xcd0
       bond_enslave+0x239c/0x3b10
       do_set_master+0x563/0x720
       rtnl_newlink_create+0x4c8/0x7b0
       rtnl_newlink+0x166d/0x1c30
       rtnetlink_rcv_msg+0x802/0xc00
       netlink_rcv_skb+0x226/0x4a0
       netlink_unicast+0x7bd/0x940
       netlink_sendmsg+0x813/0xb40
       sock_sendmsg_nosec+0x13a/0x180
       ____sys_sendmsg+0x54e/0x850
       ___sys_sendmsg+0x2a5/0x360
       __x64_sys_sendmsg+0x1b1/0x290
       do_syscall_64+0x166/0x520
       entry_SYSCALL_64_after_hwframe+0x77/0x7f

-> #0 (&qdisc_xmit_lock_key#4){+.-.}-{3:3}:
       __lock_acquire+0x15ff/0x2e50
       lock_acquire+0x115/0x350
       _raw_spin_lock+0x2e/0x40
       sch_direct_xmit+0x15f/0x4c0
       __dev_queue_xmit+0x177f/0x3820
       hsr_forward_skb+0x1701/0x2b70
       hsr_dev_xmit+0x242/0x360
       dev_hard_start_xmit+0x2cd/0x830
       __dev_queue_xmit+0x14c0/0x3820
       ip6_output+0x337/0x540
       NF_HOOK+0x177/0x4f0
       mld_sendpack+0x890/0xe10
       mld_ifc_work+0x842/0xd60
       process_scheduled_works+0xc3d/0x1630
       worker_thread+0xa47/0xfb0
       kthread+0x38b/0x480
       ret_from_fork+0x514/0xb70
       ret_from_fork_asm+0x1a/0x30

other info that might help us debug this:

 Possible unsafe locking scenario:

       CPU0                    CPU1
       ----                    ----
  lock(&hsr->seqnr_lock);
                               lock(&qdisc_xmit_lock_key#4);
                               lock(&hsr->seqnr_lock);
  lock(&qdisc_xmit_lock_key#4);

 *** DEADLOCK ***

locks held by kworker/0:3/5004: 11, last CPU#0:
 #0: ffff88811146f140 ((wq_completion)mld){+.+.}-{0:0}, at: process_scheduled_works+0x97a/0x1630
 #1: ffffc9000f6efc40 ((work_completion)(&(&idev->mc_ifc_work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x97a/0x1630
 #2: ffff888024d5d530 (&idev->mc_lock){+.+.}-{4:4}, at: mld_ifc_work+0x2d/0xd60
 #3: ffffffff8ed5c6e0 (rcu_read_lock){....}-{1:3}, at: mld_sendpack+0x206/0xe10
 #4: ffffffff8ed5c6e0 (rcu_read_lock){....}-{1:3}, at: ip6_output+0x11e/0x540
 #5: ffffffff8ed5c740 (rcu_read_lock_bh){....}-{1:3}, at: __dev_queue_xmit+0x29b/0x3820
 #6: ffffffff8ed5c6e0 (rcu_read_lock){....}-{1:3}, at: hsr_dev_xmit+0x2d/0x360
 #7: ffff8881104a1070 (&hsr->seqnr_lock){+.-.}-{3:3}, at: hsr_dev_xmit+0x237/0x360
 #8: ffffffff8ed5c6e0 (rcu_read_lock){....}-{1:3}, at: hsr_forward_skb+0xb9/0x2b70
 #9: ffffffff8ed5c740 (rcu_read_lock_bh){....}-{1:3}, at: __dev_queue_xmit+0x29b/0x3820
 #10: ffff8881bf123228 (dev->qdisc_tx_busylock ?: &qdisc_tx_busylock#5){+...}-{3:3}, at: __dev_queue_xmit+0x1143/0x3820

stack backtrace:
CPU: 0 UID: 0 PID: 5004 Comm: kworker/0:3 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: mld mld_ifc_work
Call Trace:
 <TASK>
 dump_stack_lvl+0xe8/0x150
 print_circular_bug+0x2e2/0x300
 check_noncircular+0x12f/0x150
 __lock_acquire+0x15ff/0x2e50
 lock_acquire+0x115/0x350
 _raw_spin_lock+0x2e/0x40
 sch_direct_xmit+0x15f/0x4c0
 __dev_queue_xmit+0x177f/0x3820
 hsr_forward_skb+0x1701/0x2b70
 hsr_dev_xmit+0x242/0x360
 dev_hard_start_xmit+0x2cd/0x830
 __dev_queue_xmit+0x14c0/0x3820
 ip6_output+0x337/0x540
 NF_HOOK+0x177/0x4f0
 mld_sendpack+0x890/0xe10
 mld_ifc_work+0x842/0xd60
 process_scheduled_works+0xc3d/0x1630
 worker_thread+0xa47/0xfb0
 kthread+0x38b/0x480
 ret_from_fork+0x514/0xb70
 ret_from_fork_asm+0x1a/0x30
 </TASK>
