INFO: task kworker/u8:16:8645 blocked for more than 145 seconds.
      Tainted: G             L      syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u8:16   state:D stack:22504 pid:8645  tgid:8645  ppid:2      task_flags:0x4208060 flags:0x00080000
Workqueue: events_unbound linkwatch_event
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5521 [inline]
 __schedule+0x1b57/0x5bc0 kernel/sched/core.c:7272
 __schedule_loop kernel/sched/core.c:7349 [inline]
 schedule+0x164/0x2b0 kernel/sched/core.c:7364
 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:7421
 __mutex_lock_common kernel/locking/mutex.c:726 [inline]
 __mutex_lock+0x7c1/0x1550 kernel/locking/mutex.c:821
 linkwatch_event+0xe/0x60 net/core/link_watch.c:313
 process_one_work kernel/workqueue.c:3396 [inline]
 process_scheduled_works+0xc3d/0x1630 kernel/workqueue.c:3479
 worker_thread+0xa47/0xfb0 kernel/workqueue.c:3560
 kthread+0x38b/0x480 kernel/kthread.c:436
 ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
INFO: task kworker/u8:21:8650 blocked for more than 147 seconds.
      Tainted: G             L      syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u8:21   state:D stack:22568 pid:8650  tgid:8650  ppid:2      task_flags:0x4208060 flags:0x00080000
Workqueue: netns cleanup_net
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5521 [inline]
 __schedule+0x1b57/0x5bc0 kernel/sched/core.c:7272
 __schedule_loop kernel/sched/core.c:7349 [inline]
 schedule+0x164/0x2b0 kernel/sched/core.c:7364
 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:7421
 __mutex_lock_common kernel/locking/mutex.c:726 [inline]
 __mutex_lock+0x7c1/0x1550 kernel/locking/mutex.c:821
 rtnl_net_lock include/linux/rtnetlink.h:134 [inline]
 rtnl_net_dev_lock+0x257/0x2f0 net/core/dev.c:2188
 register_netdevice_notifier_dev_net+0x33/0x240 net/core/dev.c:2215
 nsim_init_netdevsim drivers/net/netdevsim/netdev.c:1083 [inline]
 nsim_create+0xcd0/0x1150 drivers/net/netdevsim/netdev.c:1154
 __nsim_dev_port_add+0x7f8/0xcd0 drivers/net/netdevsim/dev.c:1434
 nsim_dev_port_add_all+0x37/0xf0 drivers/net/netdevsim/dev.c:1495
 nsim_dev_reload_create drivers/net/netdevsim/dev.c:1547 [inline]
 nsim_dev_reload_up+0x4dd/0x880 drivers/net/netdevsim/dev.c:983
 devlink_reload+0x4b2/0x890 net/devlink/dev.c:475
 devlink_pernet_pre_exit+0x1ff/0x420 net/devlink/core.c:578
 ops_pre_exit_list net/core/net_namespace.c:161 [inline]
 ops_undo_list+0x17d/0x8d0 net/core/net_namespace.c:235
 cleanup_net+0x572/0x810 net/core/net_namespace.c:710
 process_one_work kernel/workqueue.c:3396 [inline]
 process_scheduled_works+0xc3d/0x1630 kernel/workqueue.c:3479
 worker_thread+0xa47/0xfb0 kernel/workqueue.c:3560
 kthread+0x38b/0x480 kernel/kthread.c:436
 ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
INFO: task syz-executor:13228 blocked for more than 147 seconds.
      Tainted: G             L      syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor    state:D stack:23008 pid:13228 tgid:13228 ppid:13209  task_flags:0x400140 flags:0x00080000