INFO: task kworker/1:2:1655 blocked for more than 143 seconds.
      Not tainted 6.7.0-rc8-syzkaller-g0802e17d9aca #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/1:2     state:D stack:0     pid:1655  tgid:1655  ppid:2      flags:0x00000008
Workqueue: events nsim_fib_flush_work
Call trace:
 __switch_to+0x314/0x560 arch/arm64/kernel/process.c:556
 context_switch kernel/sched/core.c:5376 [inline]
 __schedule+0x1354/0x2360 kernel/sched/core.c:6688
 __schedule_loop kernel/sched/core.c:6763 [inline]
 schedule+0xb8/0x19c kernel/sched/core.c:6778
 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6835
 __mutex_lock_common+0xbd8/0x21a0 kernel/locking/mutex.c:679
 __mutex_lock kernel/locking/mutex.c:747 [inline]
 mutex_lock_nested+0x2c/0x38 kernel/locking/mutex.c:799
 nsim_fib_flush_work+0xa4/0x1ac drivers/net/netdevsim/fib.c:1509
 process_one_work+0x694/0x1204 kernel/workqueue.c:2627
 process_scheduled_works kernel/workqueue.c:2700 [inline]
 worker_thread+0x970/0xef4 kernel/workqueue.c:2781
 kthread+0x288/0x310 kernel/kthread.c:388
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:857

Showing all locks held in the system:
1 lock held by khungtaskd/29:
 #0: ffff80008e6c48c0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0xc/0x44 include/linux/rcupdate.h:300
3 locks held by kworker/1:2/1655:
 #0: ffff0000c0020d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x560/0x1204 kernel/workqueue.c:2600
 #1: ffff80009b277c20 ((work_completion)(&data->fib_flush_work)){+.+.}-{0:0}, at: process_one_work+0x5a0/0x1204 kernel/workqueue.c:2602
 #2: ffff0000d69b2240 (&data->fib_lock){+.+.}-{3:3}, at: nsim_fib_flush_work+0xa4/0x1ac drivers/net/netdevsim/fib.c:1509
2 locks held by getty/5868:
 #0: ffff0000d73920a0 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340
 #1: ffff800094fd02f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x41c/0x1228 drivers/tty/n_tty.c:2201
3 locks held by kworker/1:4/6204:
 #0: ffff0000c254b138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x560/0x1204 kernel/workqueue.c:2600
 #1: ffff800099ed7c20 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x5a0/0x1204 kernel/workqueue.c:2602
 #2: ffff0000cd62c190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:992 [inline]
 #2: ffff0000cd62c190 (&dev->mutex){....}-{3:3}, at: hub_event+0x1b4/0x435c drivers/usb/core/hub.c:5768
3 locks held by kworker/0:8/7288:
 #0: ffff0000c0020d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x560/0x1204 kernel/workqueue.c:2600
 #1: ffff80009a057c20 ((work_completion)(&data->fib_event_work)){+.+.}-{0:0}, at: process_one_work+0x5a0/0x1204 kernel/workqueue.c:2602
 #2: ffff0000d69b2240 (&data->fib_lock){+.+.}-{3:3}, at: nsim_fib_event_work+0x270/0x32bc drivers/net/netdevsim/fib.c:1489
2 locks held by kworker/1:11/8961:
 #0: ffff0000c0022938 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_one_work+0x560/0x1204 kernel/workqueue.c:2600
 #1: ffff80009a267c20 ((work_completion)(&rew->rew_work)){+.+.}-{0:0}, at: process_one_work+0x5a0/0x1204 kernel/workqueue.c:2602
3 locks held by kworker/0:14/21604:
 #0: ffff0000d2403938 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x560/0x1204 kernel/workqueue.c:2600
 #1: ffff80009b4f7c20 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_one_work+0x5a0/0x1204 kernel/workqueue.c:2602
 #2: ffff800090f702e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:79
1 lock held by syz-executor.2/28619:
 #0: 
ffff800090f702e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
ffff800090f702e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x704/0xdbc net/core/rtnetlink.c:6555
1 lock held by syz-executor.3/28616:
 #0: ffff800090f702e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:79
2 locks held by syz-executor.1/28617:
 #0: ffff800090f702e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
 #0: ffff800090f702e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x704/0xdbc net/core/rtnetlink.c:6555
 #1: ffff80008e6ca238 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:293 [inline]
 #1: ffff80008e6ca238 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x3ac/0x728 kernel/rcu/tree_exp.h:996
1 lock held by syz-executor.4/28627:
 #0: ffff800090f702e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
 #0: ffff800090f702e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x704/0xdbc net/core/rtnetlink.c:6555
1 lock held by syz-executor.5/28625:
 #0: ffff800090f702e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:79

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