============================================
WARNING: possible recursive locking detected
6.16.0-rc3-syzkaller-00159-g223e2288f4b8 #0 Not tainted
--------------------------------------------
kworker/1:3/5809 is trying to acquire lock:
ffff88810f08f558 (&qdisc_xmit_lock_key#3){+.-.}-{3:3}, at: sch_direct_xmit+0x153/0x4b0

but task is already holding lock:
ffff88802045e558 (&qdisc_xmit_lock_key#3){+.-.}-{3:3}, at: __dev_queue_xmit+0x15bd/0x3a70

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

11 locks held by kworker/1:3/5809:
 #0: ffff8880204ca548 ((wq_completion)mld){+.+.}-{0:0}, at: process_scheduled_works+0x9b4/0x17b0
 #1: ffffc90003e3fbc0 ((work_completion)(&(&idev->mc_ifc_work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x9ef/0x17b0
 #2: ffff88801c3d5538 (&idev->mc_lock){+.+.}-{4:4}, at: mld_ifc_work+0x2d/0xde0
 #3: ffffffff8e13ee60 (rcu_read_lock){....}-{1:3}, at: mld_sendpack+0x1de/0xd80
 #4: ffffffff8e13ee60 (rcu_read_lock){....}-{1:3}, at: ip6_finish_output2+0x701/0x16a0
 #5: ffffffff8e13eec0 (rcu_read_lock_bh){....}-{1:3}, at: __dev_queue_xmit+0x27e/0x3a70
 #6: ffff88802045e558 (&qdisc_xmit_lock_key#3){+.-.}-{3:3}, at: __dev_queue_xmit+0x15bd/0x3a70
 #7: ffffffff8e13ee60 (rcu_read_lock){....}-{1:3}, at: ip_finish_output2+0x452/0x1160
 #8: ffffffff8e13ee60 (rcu_read_lock){....}-{1:3}, at: arp_xmit+0x23/0x270
 #9: ffffffff8e13eec0 (rcu_read_lock_bh){....}-{1:3}, at: __dev_queue_xmit+0x27e/0x3a70
 #10: ffff888032743258 (dev->qdisc_tx_busylock ?: &qdisc_tx_busylock#2){+...}-{3:3}, at: __dev_queue_xmit+0x1300/0x3a70

stack backtrace:
CPU: 1 UID: 0 PID: 5809 Comm: kworker/1:3 Not tainted 6.16.0-rc3-syzkaller-00159-g223e2288f4b8 #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+0x189/0x250
 print_deadlock_bug+0x28b/0x2a0
 validate_chain+0x1a3f/0x2140
 __lock_acquire+0xab9/0xd20
 lock_acquire+0x120/0x360
 _raw_spin_lock+0x2e/0x40
 sch_direct_xmit+0x153/0x4b0
 __dev_queue_xmit+0x17b6/0x3a70
 NF_HOOK+0x310/0x3a0
 arp_xmit+0x16c/0x270
 arp_solicit+0xc1d/0xe60
 __neigh_event_send+0xf70/0x1560
 neigh_resolve_output+0x198/0x750
 ip_finish_output2+0xd40/0x1160
 iptunnel_xmit+0x571/0xa00
 ip_tunnel_xmit+0x1c3c/0x2380
 ipgre_xmit+0x89e/0xc50
 dev_hard_start_xmit+0x2d7/0x830
 __dev_queue_xmit+0x1adf/0x3a70
 ip6_finish_output2+0x11fe/0x16a0
 ip6_finish_output+0x234/0x7d0
 NF_HOOK+0x9e/0x380
 mld_sendpack+0x800/0xd80
 mld_ifc_work+0x835/0xde0
 process_scheduled_works+0xae1/0x17b0
 worker_thread+0x8a0/0xda0
 kthread+0x711/0x8a0
 ret_from_fork+0x3fc/0x770
 ret_from_fork_asm+0x1a/0x30
 </TASK>
