============================================
WARNING: possible recursive locking detected
6.11.0-rc1-syzkaller-00169-g92c4ee25208d #0 Not tainted
--------------------------------------------
kworker/u8:4/65 is trying to acquire lock:
ffff8880601c71d8 (&qs->lock){..-.}-{2:2}, at: queue_stack_map_push_elem+0x1b2/0x660 kernel/bpf/queue_stack_maps.c:210

but task is already holding lock:
ffff8880601c71d8 (&qs->lock){..-.}-{2:2}, at: queue_stack_map_push_elem+0x1b2/0x660 kernel/bpf/queue_stack_maps.c:210

other info that might help us debug this:
 Possible unsafe locking scenario:

       CPU0
       ----
  lock(&qs->lock);
  lock(&qs->lock);

 *** DEADLOCK ***

 May be due to missing lock nesting notation

5 locks held by kworker/u8:4/65:
 #0: ffff8880158a0018 (&pool->lock){-.-.}-{2:2}, at: process_one_work kernel/workqueue.c:3266 [inline]
 #0: ffff8880158a0018 (&pool->lock){-.-.}-{2:2}, at: process_scheduled_works+0xcca/0x1830 kernel/workqueue.c:3312
 #1: ffff888149277520 (&nna->lock){..-.}-{2:2}, at: node_activate_pending_pwq kernel/workqueue.c:1861 [inline]
 #1: ffff888149277520 (&nna->lock){..-.}-{2:2}, at: pwq_dec_nr_active kernel/workqueue.c:1972 [inline]
 #1: ffff888149277520 (&nna->lock){..-.}-{2:2}, at: pwq_dec_nr_in_flight+0x32a/0xd60 kernel/workqueue.c:1996
 #2: ffffffff8e9377a0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:326 [inline]
 #2: ffffffff8e9377a0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:838 [inline]
 #2: ffffffff8e9377a0 (rcu_read_lock){....}-{1:2}, at: __bpf_trace_run kernel/trace/bpf_trace.c:2405 [inline]
 #2: ffffffff8e9377a0 (rcu_read_lock){....}-{1:2}, at: bpf_trace_run1+0x1d6/0x520 kernel/trace/bpf_trace.c:2446
 #3: ffff8880601c71d8 (&qs->lock){..-.}-{2:2}, at: queue_stack_map_push_elem+0x1b2/0x660 kernel/bpf/queue_stack_maps.c:210
 #4: ffffffff8e9377a0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:326 [inline]
 #4: ffffffff8e9377a0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:838 [inline]
 #4: ffffffff8e9377a0 (rcu_read_lock){....}-{1:2}, at: __bpf_trace_run kernel/trace/bpf_trace.c:2405 [inline]
 #4: ffffffff8e9377a0 (rcu_read_lock){....}-{1:2}, at: bpf_trace_run2+0x1fc/0x540 kernel/trace/bpf_trace.c:2447

stack backtrace:
CPU: 1 UID: 0 PID: 65 Comm: kworker/u8:4 Not tainted 6.11.0-rc1-syzkaller-00169-g92c4ee25208d #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024
Workqueue:  0x0 (ipv6_addrconf)
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:93 [inline]
 dump_stack_lvl+0x241/0x360 lib/dump_stack.c:119
 check_deadlock kernel/locking/lockdep.c:3061 [inline]
 validate_chain+0x15d3/0x5900 kernel/locking/lockdep.c:3855
 __lock_acquire+0x137a/0x2040 kernel/locking/lockdep.c:5142
 lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5759
 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
 _raw_spin_lock_irqsave+0xd5/0x120 kernel/locking/spinlock.c:162
 queue_stack_map_push_elem+0x1b2/0x660 kernel/bpf/queue_stack_maps.c:210
 bpf_prog_80daba7f9ca62790+0x42/0x46
 bpf_dispatcher_nop_func include/linux/bpf.h:1243 [inline]
 __bpf_prog_run include/linux/filter.h:691 [inline]
 bpf_prog_run include/linux/filter.h:698 [inline]
 __bpf_trace_run kernel/trace/bpf_trace.c:2406 [inline]
 bpf_trace_run2+0x2ec/0x540 kernel/trace/bpf_trace.c:2447
 trace_contention_end+0x114/0x140 include/trace/events/lock.h:122
 __pv_queued_spin_lock_slowpath+0xb81/0xdc0 kernel/locking/qspinlock.c:557
 pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:584 [inline]
 queued_spin_lock_slowpath+0x42/0x50 arch/x86/include/asm/qspinlock.h:51
 queued_spin_lock include/asm-generic/qspinlock.h:114 [inline]
 do_raw_spin_lock+0x272/0x370 kernel/locking/spinlock_debug.c:116
 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:111 [inline]
 _raw_spin_lock_irqsave+0xe1/0x120 kernel/locking/spinlock.c:162
 queue_stack_map_push_elem+0x1b2/0x660 kernel/bpf/queue_stack_maps.c:210
 bpf_prog_80daba7f9ca62790+0x42/0x46
 bpf_dispatcher_nop_func include/linux/bpf.h:1243 [inline]
 __bpf_prog_run include/linux/filter.h:691 [inline]
 bpf_prog_run include/linux/filter.h:698 [inline]
 __bpf_trace_run kernel/trace/bpf_trace.c:2406 [inline]
 bpf_trace_run1+0x2ca/0x520 kernel/trace/bpf_trace.c:2446
 trace_workqueue_activate_work+0x186/0x1f0 include/trace/events/workqueue.h:59
 __pwq_activate_work+0x61/0x340 kernel/workqueue.c:1681
 node_activate_pending_pwq kernel/workqueue.c:1905 [inline]
 pwq_dec_nr_active kernel/workqueue.c:1972 [inline]
 pwq_dec_nr_in_flight+0x679/0xd60 kernel/workqueue.c:1996
 process_one_work kernel/workqueue.c:3286 [inline]
 process_scheduled_works+0xf11/0x1830 kernel/workqueue.c:3312
 worker_thread+0x86d/0xd40 kernel/workqueue.c:3390
 kthread+0x2f0/0x390 kernel/kthread.c:389
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>