============================================
WARNING: possible recursive locking detected
syzkaller #0 Not tainted
--------------------------------------------
kworker/0:3/6585 is trying to acquire lock:
ffff0000c9807558 (&qdisc_xmit_lock_key#4){+...}-{3:3}, at: spin_lock include/linux/spinlock.h:351 [inline]
ffff0000c9807558 (&qdisc_xmit_lock_key#4){+...}-{3:3}, at: __netif_tx_lock include/linux/netdevice.h:4710 [inline]
ffff0000c9807558 (&qdisc_xmit_lock_key#4){+...}-{3:3}, at: sch_direct_xmit+0x128/0x468 net/sched/sch_generic.c:345

but task is already holding lock:
ffff0000df8c2d58 (&qdisc_xmit_lock_key#4){+...}-{3:3}, at: spin_lock include/linux/spinlock.h:351 [inline]
ffff0000df8c2d58 (&qdisc_xmit_lock_key#4){+...}-{3:3}, at: __netif_tx_lock include/linux/netdevice.h:4710 [inline]
ffff0000df8c2d58 (&qdisc_xmit_lock_key#4){+...}-{3:3}, at: __dev_queue_xmit+0xdc0/0x2a78 net/core/dev.c:4815

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

12 locks held by kworker/0:3/6585:
 #0: ffff0000d4ab7948 ((wq_completion)mld){+.+.}-{0:0}, at: process_one_work+0x63c/0x1558 kernel/workqueue.c:3231
 #1: ffff8000a5d07be0 ((work_completion)(&(&idev->mc_ifc_work)->work)){+.+.}-{0:0}, at: process_one_work+0x6d0/0x1558 kernel/workqueue.c:3231
 #2: ffff0000c960c538 (&idev->mc_lock){+.+.}-{4:4}, at: mld_ifc_work+0x38/0xc38 net/ipv6/mcast.c:2692
 #3: ffff80008fa5b6e0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire+0x10/0x4c include/linux/rcupdate.h:330
 #4: ffff80008fa5b6e0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire+0x18/0x54 include/linux/rcupdate.h:330
 #5: ffff80008fa5b740 (rcu_read_lock_bh){....}-{1:3}, at: rcu_lock_acquire+0x18/0x54 include/linux/rcupdate.h:330
 #6: ffff0000df8c2d58 (&qdisc_xmit_lock_key#4){+...}-{3:3}, at: spin_lock include/linux/spinlock.h:351 [inline]
 #6: ffff0000df8c2d58 (&qdisc_xmit_lock_key#4){+...}-{3:3}, at: __netif_tx_lock include/linux/netdevice.h:4710 [inline]
 #6: ffff0000df8c2d58 (&qdisc_xmit_lock_key#4){+...}-{3:3}, at: __dev_queue_xmit+0xdc0/0x2a78 net/core/dev.c:4815
 #7: ffff80008fa5b6e0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire+0x18/0x54 include/linux/rcupdate.h:330
 #8: ffff80008fa5b6e0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire+0x18/0x54 include/linux/rcupdate.h:330
 #9: ffff80008fa5b6e0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire+0x10/0x4c include/linux/rcupdate.h:330
 #10: ffff80008fa5b740 (rcu_read_lock_bh){....}-{1:3}, at: rcu_lock_acquire+0x18/0x54 include/linux/rcupdate.h:330
 #11: ffff0000c899b228 (dev->qdisc_tx_busylock ?: &qdisc_tx_busylock#3){+...}-{3:3}, at: spin_trylock include/linux/spinlock.h:361 [inline]
 #11: ffff0000c899b228 (dev->qdisc_tx_busylock ?: &qdisc_tx_busylock#3){+...}-{3:3}, at: qdisc_run_begin include/net/sch_generic.h:202 [inline]
 #11: ffff0000c899b228 (dev->qdisc_tx_busylock ?: &qdisc_tx_busylock#3){+...}-{3:3}, at: __dev_xmit_skb net/core/dev.c:4156 [inline]
 #11: ffff0000c899b228 (dev->qdisc_tx_busylock ?: &qdisc_tx_busylock#3){+...}-{3:3}, at: __dev_queue_xmit+0xbe4/0x2a78 net/core/dev.c:4785

stack backtrace:
CPU: 0 UID: 0 PID: 6585 Comm: kworker/0:3 Not tainted syzkaller #0 PREEMPT 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025
Workqueue: mld mld_ifc_work
Call trace:
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:499 (C)
 __dump_stack+0x30/0x40 lib/dump_stack.c:94
 dump_stack_lvl+0xd8/0x12c lib/dump_stack.c:120
 dump_stack+0x1c/0x28 lib/dump_stack.c:129
 print_deadlock_bug+0x2e8/0x2f0 kernel/locking/lockdep.c:3041
 check_deadlock kernel/locking/lockdep.c:3093 [inline]
 validate_chain kernel/locking/lockdep.c:3895 [inline]
 __lock_acquire+0x2940/0x30a4 kernel/locking/lockdep.c:5237
 lock_acquire+0x140/0x2e0 kernel/locking/lockdep.c:5868
 __raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline]
 _raw_spin_lock+0x48/0x60 kernel/locking/spinlock.c:154
 spin_lock include/linux/spinlock.h:351 [inline]
 __netif_tx_lock include/linux/netdevice.h:4710 [inline]
 sch_direct_xmit+0x128/0x468 net/sched/sch_generic.c:345
 __dev_xmit_skb net/core/dev.c:4169 [inline]
 __dev_queue_xmit+0xf94/0x2a78 net/core/dev.c:4785
 dev_queue_xmit include/linux/netdevice.h:3381 [inline]
 arp_xmit_finish+0x24/0x34 net/ipv4/arp.c:654
 NF_HOOK+0x2b8/0x34c include/linux/netfilter.h:318
 arp_xmit+0x160/0x26c net/ipv4/arp.c:664
 arp_send_dst+0x1d8/0x2cc net/ipv4/arp.c:320
 arp_solicit+0x9e8/0xc10 net/ipv4/arp.c:392