============================================
WARNING: possible recursive locking detected
syzkaller #0 Tainted: G             L     
--------------------------------------------
kworker/u8:8/1159 is trying to acquire lock:
ffff888035661558 (&qdisc_xmit_lock_key#4){+.-.}-{3:3}, at: spin_lock include/linux/spinlock.h:342 [inline]
ffff888035661558 (&qdisc_xmit_lock_key#4){+.-.}-{3:3}, at: __netif_tx_lock include/linux/netdevice.h:4809 [inline]
ffff888035661558 (&qdisc_xmit_lock_key#4){+.-.}-{3:3}, at: sch_direct_xmit+0x3b5/0xc70 net/sched/sch_generic.c:370

but task is already holding lock:
ffff888079298958 (&qdisc_xmit_lock_key#4){+.-.}-{3:3}, at: spin_lock include/linux/spinlock.h:342 [inline]
ffff888079298958 (&qdisc_xmit_lock_key#4){+.-.}-{3:3}, at: __netif_tx_lock include/linux/netdevice.h:4809 [inline]
ffff888079298958 (&qdisc_xmit_lock_key#4){+.-.}-{3:3}, at: sch_direct_xmit+0x3b5/0xc70 net/sched/sch_generic.c:370

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

10 locks held by kworker/u8:8/1159:
 #0: ffff888013184940 ((wq_completion)bond1){+.+.}-{0:0}, at: process_one_work+0x12b1/0x1940 kernel/workqueue.c:3297
 #1: ffffc9000577fd08 ((work_completion)(&(&bond->alb_work)->work)){+.+.}-{0:0}, at: process_one_work+0x988/0x1940 kernel/workqueue.c:3298
 #2: ffffffff8ebe8180 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:300 [inline]
 #2: ffffffff8ebe8180 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:840 [inline]
 #2: ffffffff8ebe8180 (rcu_read_lock){....}-{1:3}, at: bond_alb_monitor+0xec/0x16f0 drivers/net/bonding/bond_alb.c:1546
 #3: ffffffff8ebe8120 (rcu_read_lock_bh){....}-{1:3}, at: local_bh_disable include/linux/bottom_half.h:20 [inline]
 #3: ffffffff8ebe8120 (rcu_read_lock_bh){....}-{1:3}, at: rcu_read_lock_bh include/linux/rcupdate.h:893 [inline]
 #3: ffffffff8ebe8120 (rcu_read_lock_bh){....}-{1:3}, at: __dev_queue_xmit+0x296/0x4970 net/core/dev.c:4796
 #4: ffff8880770ca228 (dev->qdisc_tx_busylock ?: &qdisc_tx_busylock#5){+...}-{3:3}, at: spin_trylock include/linux/spinlock.h:354 [inline]
 #4: ffff8880770ca228 (dev->qdisc_tx_busylock ?: &qdisc_tx_busylock#5){+...}-{3:3}, at: qdisc_run_begin include/net/sch_generic.h:205 [inline]
 #4: ffff8880770ca228 (dev->qdisc_tx_busylock ?: &qdisc_tx_busylock#5){+...}-{3:3}, at: __dev_xmit_skb net/core/dev.c:4201 [inline]
 #4: ffff8880770ca228 (dev->qdisc_tx_busylock ?: &qdisc_tx_busylock#5){+...}-{3:3}, at: __dev_queue_xmit+0x2504/0x4970 net/core/dev.c:4836
 #5: ffff888079298958 (&qdisc_xmit_lock_key#4){+.-.}-{3:3}, at: spin_lock include/linux/spinlock.h:342 [inline]
 #5: ffff888079298958 (&qdisc_xmit_lock_key#4){+.-.}-{3:3}, at: __netif_tx_lock include/linux/netdevice.h:4809 [inline]
 #5: ffff888079298958 (&qdisc_xmit_lock_key#4){+.-.}-{3:3}, at: sch_direct_xmit+0x3b5/0xc70 net/sched/sch_generic.c:370
 #6: ffffffff8ebe8180 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:300 [inline]
 #6: ffffffff8ebe8180 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:840 [inline]
 #6: ffffffff8ebe8180 (rcu_read_lock){....}-{1:3}, at: ip_output+0xb3/0xc10 net/ipv4/ip_output.c:432
 #7: ffffffff8ebe8180 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:300 [inline]
 #7: ffffffff8ebe8180 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:840 [inline]
 #7: ffffffff8ebe8180 (rcu_read_lock){....}-{1:3}, at: ip_finish_output2+0x356/0x2400 net/ipv4/ip_output.c:229
 #8: ffffffff8ebe8120 (rcu_read_lock_bh){....}-{1:3}, at: local_bh_disable include/linux/bottom_half.h:20 [inline]
 #8: ffffffff8ebe8120 (rcu_read_lock_bh){....}-{1:3}, at: rcu_read_lock_bh include/linux/rcupdate.h:893 [inline]
 #8: ffffffff8ebe8120 (rcu_read_lock_bh){....}-{1:3}, at: __dev_queue_xmit+0x296/0x4970 net/core/dev.c:4796
 #9: ffff888055868228 (dev->qdisc_tx_busylock ?: &qdisc_tx_busylock#5){+...}-{3:3}, at: spin_trylock include/linux/spinlock.h:354 [inline]
 #9: ffff888055868228 (dev->qdisc_tx_busylock ?: &qdisc_tx_busylock#5){+...}-{3:3}, at: qdisc_run_begin include/net/sch_generic.h:205 [inline]
 #9: ffff888055868228 (dev->qdisc_tx_busylock ?: &qdisc_tx_busylock#5){+...}-{3:3}, at: __dev_xmit_skb net/core/dev.c:4201 [inline]
 #9: ffff888055868228 (dev->qdisc_tx_busylock ?: &qdisc_tx_busylock#5){+...}-{3:3}, at: __dev_queue_xmit+0x2504/0x4970 net/core/dev.c:4836

stack backtrace:
CPU: 0 UID: 0 PID: 1159 Comm: kworker/u8:8 Tainted: G             L      syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026
Workqueue: bond1 bond_alb_monitor
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x100/0x190 lib/dump_stack.c:120
 print_deadlock_bug.cold+0xbd/0xca kernel/locking/lockdep.c:3041
 check_deadlock kernel/locking/lockdep.c:3093 [inline]
 validate_chain kernel/locking/lockdep.c:3895 [inline]
 __lock_acquire+0x1256/0x1a40 kernel/locking/lockdep.c:5237
 lock_acquire kernel/locking/lockdep.c:5868 [inline]
 lock_acquire+0x1b9/0x370 kernel/locking/lockdep.c:5825
 __raw_spin_lock include/linux/spinlock_api_smp.h:158 [inline]
 _raw_spin_lock+0x2e/0x40 kernel/locking/spinlock.c:158
 spin_lock include/linux/spinlock.h:342 [inline]
 __netif_tx_lock include/linux/netdevice.h:4809 [inline]
 sch_direct_xmit+0x3b5/0xc70 net/sched/sch_generic.c:370
 __dev_xmit_skb net/core/dev.c:4214 [inline]
 __dev_queue_xmit+0x27ac/0x4970 net/core/dev.c:4836
 dev_queue_xmit include/linux/netdevice.h:3446 [inline]
 neigh_resolve_output net/core/neighbour.c:1616 [inline]
 neigh_resolve_output+0x51f/0x8f0 net/core/neighbour.c:1596
 neigh_output include/net/neighbour.h:560 [inline]
 ip_finish_output2+0x851/0x2400 net/ipv4/ip_output.c:236
 __ip_finish_output.part.0+0x444/0x6f0 net/ipv4/ip_output.c:314
 __ip_finish_output net/ipv4/ip_output.c:302 [inline]
 ip_finish_output net/ipv4/ip_output.c:324 [inline]
 NF_HOOK_COND include/linux/netfilter.h:307 [inline]
 ip_output+0x39b/0xc10 net/ipv4/ip_output.c:437
 dst_output include/net/dst.h:470 [inline]
 ip_local_out+0x193/0x1f0 net/ipv4/ip_output.c:131
 iptunnel_xmit+0x722/0xd20 net/ipv4/ip_tunnel_core.c:97
 ip_tunnel_xmit+0x1b91/0x3210 net/ipv4/ip_tunnel.c:848
 __gre_xmit+0x820/0xb20 net/ipv4/ip_gre.c:491
 erspan_xmit+0x55a/0x1ec0 net/ipv4/ip_gre.c:750
 __netdev_start_xmit include/linux/netdevice.h:5400 [inline]
 netdev_start_xmit include/linux/netdevice.h:5409 [inline]
 xmit_one net/core/dev.c:3889 [inline]
 dev_hard_start_xmit+0x121/0x760 net/core/dev.c:3905
 sch_direct_xmit+0x1b2/0xc70 net/sched/sch_generic.c:372
 __dev_xmit_skb net/core/dev.c:4214 [inline]
 __dev_queue_xmit+0x27ac/0x4970 net/core/dev.c:4836
 dev_queue_xmit include/linux/netdevice.h:3446 [inline]
 alb_send_lp_vid+0x31e/0x540 drivers/net/bonding/bond_alb.c:949
 alb_send_learning_packets+0xe0/0x2f0 drivers/net/bonding/bond_alb.c:1012
 bond_alb_monitor+0x997/0x16f0 drivers/net/bonding/bond_alb.c:1563
 process_one_work+0xa23/0x1940 kernel/workqueue.c:3322
 process_scheduled_works kernel/workqueue.c:3405 [inline]
 worker_thread+0x5ef/0xe50 kernel/workqueue.c:3486
 kthread+0x370/0x450 kernel/kthread.c:436
 ret_from_fork+0x72b/0xd50 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>