INFO: task kworker/1:3:5110 blocked for more than 159 seconds.
      Not tainted 6.9.0-next-20240513-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/1:3     state:D
 stack:18296 pid:5110  tgid:5110  ppid:2      flags:0x00004000
Workqueue: events slab_caches_to_rcu_destroy_workfn

Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5408 [inline]
 __schedule+0x17e8/0x4a50 kernel/sched/core.c:6745
 __schedule_loop kernel/sched/core.c:6822 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6837
 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6894
 __mutex_lock_common kernel/locking/mutex.c:684 [inline]
 __mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752
 slab_caches_to_rcu_destroy_workfn+0x37/0x120 mm/slab_common.c:435
 process_one_work kernel/workqueue.c:3231 [inline]
 process_scheduled_works+0xa2c/0x1830 kernel/workqueue.c:3312
 worker_thread+0x86d/0xd70 kernel/workqueue.c:3393
 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>

Showing all locks held in the system:
14 locks held by kworker/0:1/9:
1 lock held by khungtaskd/31:
 #0: ffffffff8e333e60
 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:329 [inline]
 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:781 [inline]
 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6614
3 locks held by kworker/1:1/45:
 #0: ffff888015080948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3206 [inline]
 #0: ffff888015080948 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3312
 #1: ffffc90000b57d00 ((linkwatch_work).work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3207 [inline]
 #1: ffffc90000b57d00 ((linkwatch_work).work){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3312
 #2: ffffffff8f5e6a88 (rtnl_mutex){+.+.}-{3:3}, at: linkwatch_event+0xe/0x60 net/core/link_watch.c:276
3 locks held by kworker/u8:10/3846:
 #0: ffff888029d5b948 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3206 [inline]
 #0: ffff888029d5b948 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3312
 #1: 
ffffc9000c4e7d00 ((work_completion)(&(&net->ipv6.addr_chk_work)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3207 [inline]
ffffc9000c4e7d00 ((work_completion)(&(&net->ipv6.addr_chk_work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3312
 #2: ffffffff8f5e6a88 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_verify_work+0x19/0x30 net/ipv6/addrconf.c:4733
4 locks held by kworker/u8:11/3858:
 #0: 
ffff888015ed5948
 (
(wq_completion)netns){+.+.}-{0:0}
, at: process_one_work kernel/workqueue.c:3206 [inline]
, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3312
 #1: ffffc9000c377d00 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3207 [inline]
 #1: ffffc9000c377d00 (net_cleanup_work){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3312
 #2: 
ffffffff8f5da250 (pernet_ops_rwsem){++++}-{3:3}
, at: cleanup_net+0x16a/0xcc0 net/core/net_namespace.c:594
 #3: ffffffff8f5e6a88 (rtnl_mutex){+.+.}-{3:3}, at: wiphy_unregister+0x236/0xaa0 net/wireless/core.c:1096
2 locks held by getty/4853:
 #0: ffff88801e1000a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
 #1: 
ffffc900031432f0
 (
&ldata->atomic_read_lock){+.+.}-{3:3}
, at: n_tty_read+0x6b5/0x1e10 drivers/tty/n_tty.c:2201
3 locks held by kworker/1:3/5110:
 #0: 
ffff888015080948
 (
(wq_completion)events){+.+.}-{0:0}
, at: process_one_work kernel/workqueue.c:3206 [inline]
, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3312
 #1: ffffc9000370fd00
 (
slab_caches_to_rcu_destroy_work
){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3207 [inline]
){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3312
 #2: ffffffff8e413648 (slab_mutex){+.+.}-{3:3}, at: slab_caches_to_rcu_destroy_workfn+0x37/0x120 mm/slab_common.c:435
3 locks held by kworker/1:4/5162:
 #0: ffff888015080948
 (
(wq_completion)events
){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3206 [inline]
){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3312
 #1: 
ffffc9000400fd00
 (deferred_process_work
){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3207 [inline]
){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3312
 #2: 
ffffffff8f5e6a88 (rtnl_mutex){+.+.}-{3:3}, at: switchdev_deferred_process_work+0xe/0x20 net/switchdev/switchdev.c:104
3 locks held by kworker/0:4/5163:
3 locks held by kworker/0:7/5215:
4 locks held by kworker/0:8/5216:
4 locks held by syz-executor.0/10736:
 #0: 
ffffffff8ea03de8
 (bio_slab_lock){+.+.}-{3:3}, at: bio_put_slab block/bio.c:140 [inline]
 (bio_slab_lock){+.+.}-{3:3}, at: bioset_exit+0x436/0x650 block/bio.c:1740
 #1: ffffffff8e1ce470 (cpu_hotplug_lock){++++}-{0:0}, at: kmem_cache_destroy+0x32/0x1b0 mm/slab_common.c:487
 #2: ffffffff8e413648 (slab_mutex){+.+.}-{3:3}, at: kmem_cache_destroy+0x40/0x1b0 mm/slab_common.c:488
 #3: ffffffff8e430358 (flush_lock){+.+.}-{3:3}, at: flush_all_cpus_locked+0x24/0x180 mm/slub.c:3167
2 locks held by syz-executor.3/12096:
 #0: 
ffffffff8f5e6a88 (
rtnl_mutex){+.+.}-{3:3}
, at: tun_detach drivers/net/tun.c:698 [inline]
, at: tun_chr_close+0x3e/0x1b0 drivers/net/tun.c:3500
 #1: 
ffffffff8e1ce470 (cpu_hotplug_lock){++++}-{0:0}, at: flush_all_backlogs net/core/dev.c:5984 [inline]
ffffffff8e1ce470 (cpu_hotplug_lock){++++}-{0:0}, at: unregister_netdevice_many_notify+0x607/0x16e0 net/core/dev.c:11209
1 lock held by syz-executor.2/12211:
 #0: ffffffff8f5e6a88 (rtnl_mutex){+.+.}-{3:3}, at: tun_detach drivers/net/tun.c:698 [inline]
 #0: ffffffff8f5e6a88 (rtnl_mutex){+.+.}-{3:3}, at: tun_chr_close+0x3e/0x1b0 drivers/net/tun.c:3500
2 locks held by syz-executor.4/12278:
 #0: 
ffffffff8f5da250
 (pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x4c6/0x7b0 net/core/net_namespace.c:504
 #1: ffffffff8f5e6a88 (rtnl_mutex){+.+.}-{3:3}
, at: register_nexthop_notifier+0x84/0x290 net/ipv4/nexthop.c:3871
2 locks held by syz-executor.3/12279:
 #0: ffffffff8f5da250 (pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x4c6/0x7b0 net/core/net_namespace.c:504
 #1: ffffffff8f5e6a88 (rtnl_mutex){+.+.}-{3:3}, at: register_nexthop_notifier+0x84/0x290 net/ipv4/nexthop.c:3871
2 locks held by syz-executor.1/12280:
 #0: 
ffffffff8f5da250
 (
pernet_ops_rwsem
){++++}-{3:3}
, at: copy_net_ns+0x4c6/0x7b0 net/core/net_namespace.c:504
 #1: ffffffff8f5e6a88
 (
rtnl_mutex){+.+.}-{3:3}, at: register_nexthop_notifier+0x84/0x290 net/ipv4/nexthop.c:3871
2 locks held by syz-executor.2/12283:
 #0: ffffffff8f5da250
 (
pernet_ops_rwsem
){++++}-{3:3}
, at: copy_net_ns+0x4c6/0x7b0 net/core/net_namespace.c:504
 #1: 
ffffffff8f5e6a88
 (
rtnl_mutex
){+.+.}-{3:3}, at: register_nexthop_notifier+0x84/0x290 net/ipv4/nexthop.c:3871
1 lock held by syz-executor.4/12293:
 #0: ffffffff8f5e6a88 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
 #0: ffffffff8f5e6a88 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x842/0x10d0 net/core/rtnetlink.c:6592
1 lock held by syz-executor.3/12295:
 #0: 
ffffffff8f5e6a88
 (
rtnl_mutex){+.+.}-{3:3}
, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
, at: rtnetlink_rcv_msg+0x842/0x10d0 net/core/rtnetlink.c:6592
1 lock held by syz-executor.1/12297:
 #0: ffffffff8f5e6a88
 (
rtnl_mutex
){+.+.}-{3:3}
, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
, at: rtnetlink_rcv_msg+0x842/0x10d0 net/core/rtnetlink.c:6592
1 lock held by syz-executor.2/12298:
 #0: ffffffff8f5e6a88
 (
rtnl_mutex
){+.+.}-{3:3}
, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
, at: rtnetlink_rcv_msg+0x842/0x10d0 net/core/rtnetlink.c:6592

=============================================

NMI backtrace for cpu 1
CPU: 1 PID: 31 Comm: khungtaskd Not tainted 6.9.0-next-20240513-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x241/0x360 lib/dump_stack.c:114
 nmi_cpu_backtrace+0x49c/0x4d0 lib/nmi_backtrace.c:113
 nmi_trigger_cpumask_backtrace+0x198/0x320 lib/nmi_backtrace.c:62
 trigger_all_cpu_backtrace include/linux/nmi.h:162 [inline]
 check_hung_uninterruptible_tasks kernel/hung_task.c:223 [inline]
 watchdog+0xfde/0x1020 kernel/hung_task.c:379
 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>
Sending NMI from CPU 1 to CPUs 0:
yealink 2-1:36.0: urb_irq_callback - urb status -71
yealink 2-1:36.0: unexpected response 0
yealink 2-1:36.0: urb_ctl_callback - urb status -71
yealink 2-1:36.0: urb_irq_callback - urb status -71
NMI backtrace for cpu 0
CPU: 0 PID: 5163 Comm: kworker/0:4 Not tainted 6.9.0-next-20240513-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
Workqueue: events kfree_rcu_monitor
RIP: 0010:put_dec_trunc8+0x7a/0x330 lib/vsprintf.c:232
Code: 00 89 de e8 b8 5e 11 f6 83 fb 63 0f 87 82 02 00 00 e8 6a 5a 11 f6 48 8d 9c 1b 40 6c ec 8c 48 89 d8 48 c1 e8 03 42 0f b6 04 28 <84> c0 0f 85 b7 01 00 00 0f b7 1b 4c 89 f0 48 c1 e8 03 42 0f b6 04
RSP: 0018:ffffc90000005fc8 EFLAGS: 00000803
RAX: 0000000000000000 RBX: ffffffff8cec6cec RCX: 0000000000040000
RDX: ffffc900020e1000 RSI: 0000000000016bc7 RDI: 0000000000016bc8
RBP: 00000000000002ae R08: ffffffff8b84f208 R09: 0000000000000000
R10: ffffc90000006080 R11: fffff52000000c13 R12: 0000000000000006
R13: dffffc0000000000 R14: ffffc90000006080 R15: ffffc90000006461
FS:  0000000000000000(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffd4612cc48 CR3: 0000000021d2e000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000006800
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 number+0x337/0xf90 lib/vsprintf.c:511
 vsnprintf+0x1542/0x1da0 lib/vsprintf.c:2890
 sprintf+0xda/0x120 lib/vsprintf.c:3028
 print_time kernel/printk/printk.c:1327 [inline]
 info_print_prefix+0x16b/0x310 kernel/printk/printk.c:1353
 record_print_text kernel/printk/printk.c:1402 [inline]
 printk_get_next_message+0x6da/0xbe0 kernel/printk/printk.c:2855
 console_emit_next_record kernel/printk/printk.c:2895 [inline]
 console_flush_all+0x410/0xfd0 kernel/printk/printk.c:2994
 console_unlock+0x13b/0x4d0 kernel/printk/printk.c:3063
 vprintk_emit+0x5a6/0x770 kernel/printk/printk.c:2345
 dev_vprintk_emit+0x2ae/0x330 drivers/base/core.c:4951
 dev_printk_emit+0xdd/0x120 drivers/base/core.c:4962
 _dev_err+0x122/0x170 drivers/base/core.c:5017
 urb_irq_callback+0x37e/0x5b0 drivers/input/misc/yealink.c:416
 __usb_hcd_giveback_urb+0x373/0x530 drivers/usb/core/hcd.c:1648
 dummy_timer+0x830/0x45d0 drivers/usb/gadget/udc/dummy_hcd.c:1987
 __run_hrtimer kernel/time/hrtimer.c:1687 [inline]
 __hrtimer_run_queues+0x5a5/0xd50 kernel/time/hrtimer.c:1751
 hrtimer_interrupt+0x396/0x990 kernel/time/hrtimer.c:1813
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1032 [inline]
 __sysvec_apic_timer_interrupt+0x110/0x3f0 arch/x86/kernel/apic/apic.c:1049
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline]
 sysvec_apic_timer_interrupt+0x52/0xc0 arch/x86/kernel/apic/apic.c:1043
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:__read_once_word_nocheck+0x0/0x20 include/asm-generic/rwonce.h:66
Code: 89 df e8 b3 bf ba 00 e9 72 fc ff ff 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <53> 48 89 fb e8 87 05 55 00 48 8b 03 5b c3 cc cc cc cc 66 2e 0f 1f
RSP: 0018:ffffc90000007440 EFLAGS: 00000246
RAX: ffffffff81412038 RBX: 0000000000000001 RCX: ffff888018300000
RDX: 0000000080000102 RSI: 0000000000000001 RDI: ffffc9000405f960
RBP: 1ffff92000000ea6 R08: ffffffff81411ffd R09: ffffffff81411f56
R10: 0000000000000003 R11: ffff888018300000 R12: ffffc9000405f960
R13: dffffc0000000000 R14: 1ffff92000000ea5 R15: 1ffff92000000ea4
 deref_stack_reg arch/x86/kernel/unwind_orc.c:406 [inline]
 unwind_next_frame+0x1356/0x2a00 arch/x86/kernel/unwind_orc.c:585
 arch_stack_walk+0x151/0x1b0 arch/x86/kernel/stacktrace.c:25
 stack_trace_save+0x118/0x1d0 kernel/stacktrace.c:122
 kasan_save_stack mm/kasan/common.c:47 [inline]
 kasan_save_track+0x3f/0x80 mm/kasan/common.c:68
 unpoison_slab_object mm/kasan/common.c:312 [inline]
 __kasan_slab_alloc+0x66/0x80 mm/kasan/common.c:338
 kasan_slab_alloc include/linux/kasan.h:201 [inline]
 slab_post_alloc_hook mm/slub.c:3940 [inline]
 slab_alloc_node mm/slub.c:4000 [inline]
 kmem_cache_alloc_node_noprof+0x16b/0x320 mm/slub.c:4043
 __alloc_skb+0x1c3/0x440 net/core/skbuff.c:656
 alloc_skb include/linux/skbuff.h:1308 [inline]
 new_skb drivers/block/aoe/aoecmd.c:66 [inline]
 aoecmd_cfg_pkts drivers/block/aoe/aoecmd.c:427 [inline]
 aoecmd_cfg+0x2d3/0xa30 drivers/block/aoe/aoecmd.c:1362
 call_timer_fn+0x18e/0x650 kernel/time/timer.c:1792
 expire_timers kernel/time/timer.c:1843 [inline]
 __run_timers kernel/time/timer.c:2417 [inline]
 __run_timer_base+0x66a/0x8e0 kernel/time/timer.c:2428
 run_timer_base kernel/time/timer.c:2437 [inline]
 run_timer_softirq+0xb7/0x170 kernel/time/timer.c:2447
 handle_softirqs+0x2d6/0x990 kernel/softirq.c:554
 __do_softirq kernel/softirq.c:588 [inline]
 invoke_softirq kernel/softirq.c:428 [inline]
 __irq_exit_rcu+0xf4/0x1c0 kernel/softirq.c:637
 irq_exit_rcu+0x9/0x30 kernel/softirq.c:649
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline]
 sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1043
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0xd8/0x140 kernel/locking/spinlock.c:194
Code: 9c 8f 44 24 20 42 80 3c 23 00 74 08 4c 89 f7 e8 5e 1a 66 f6 f6 44 24 21 02 75 52 41 f7 c7 00 02 00 00 74 01 fb bf 01 00 00 00 <e8> b3 d9 cf f5 65 8b 05 24 e9 6d 74 85 c0 74 43 48 c7 04 24 0e 36
RSP: 0018:ffffc9000405f760 EFLAGS: 00000206
RAX: 4659a36a6297c300 RBX: 1ffff9200080bef0 RCX: ffffffff81730d7a
RDX: dffffc0000000000 RSI: ffffffff8bcab960 RDI: 0000000000000001
RBP: ffffc9000405f7f0 R08: ffffffff92fb55e7 R09: 1ffffffff25f6abc
R10: dffffc0000000000 R11: fffffbfff25f6abd R12: dffffc0000000000
R13: 1ffff9200080beec R14: ffffc9000405f780 R15: 0000000000000246
 __debug_check_no_obj_freed lib/debugobjects.c:998 [inline]
 debug_check_no_obj_freed+0x561/0x580 lib/debugobjects.c:1019
 slab_free_hook mm/slub.c:2162 [inline]
 slab_free_freelist_hook mm/slub.c:2224 [inline]
 slab_free_bulk mm/slub.c:4460 [inline]
 kmem_cache_free_bulk+0x1c4/0x370 mm/slub.c:4674
 kfree_bulk include/linux/slab.h:568 [inline]
 kvfree_rcu_bulk+0x24b/0x4e0 kernel/rcu/tree.c:3371
 kvfree_rcu_drain_ready kernel/rcu/tree.c:3545 [inline]
 kfree_rcu_monitor+0x8a4/0x1020 kernel/rcu/tree.c:3563
 process_one_work kernel/workqueue.c:3231 [inline]
 process_scheduled_works+0xa2c/0x1830 kernel/workqueue.c:3312
 worker_thread+0x86d/0xd70 kernel/workqueue.c:3393
 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>
yealink 2-1:36.0: unexpected response 0
yealink 2-1:36.0: urb_ctl_callback - urb status -71
yealink 2-1:36.0: urb_irq_callback - urb status -71
yealink 2-1:36.0: unexpected response 0
yealink 2-1:36.0: urb_ctl_callback - urb status -71
yealink 2-1:36.0: urb_irq_callback - urb status -71
yealink 2-1:36.0: unexpected response 0
yealink 2-1:36.0: urb_ctl_callback - urb status -71
yealink 2-1:36.0: urb_irq_callback - urb status -71
yealink 2-1:36.0: unexpected response 0
yealink 2-1:36.0: urb_ctl_callback - urb status -71
yealink 2-1:36.0: urb_irq_callback - urb status -71
yealink 2-1:36.0: unexpected response 0
yealink 2-1:36.0: urb_ctl_callback - urb status -71
yealink 2-1:36.0: urb_irq_callback - urb status -71