INFO: task kworker/u4:16:15954 blocked for more than 143 seconds.
      Not tainted 6.7.0-syzkaller-04629-g3e7aeb78ab01 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u4:16   state:D stack:26264 pid:15954 tgid:15954 ppid:2      flags:0x00004000
Workqueue: netns cleanup_net
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5400 [inline]
 __schedule+0xf12/0x5c00 kernel/sched/core.c:6727
 __schedule_loop kernel/sched/core.c:6802 [inline]
 schedule+0xe9/0x270 kernel/sched/core.c:6817
 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6874
 rwsem_down_write_slowpath kernel/locking/rwsem.c:1178 [inline]
 __down_write_common+0x948/0x1400 kernel/locking/rwsem.c:1306
 rdma_dev_exit_net+0x178/0x590 drivers/infiniband/core/device.c:1123
 ops_exit_list+0xb0/0x170 net/core/net_namespace.c:170
 cleanup_net+0x505/0xb20 net/core/net_namespace.c:618
 process_one_work+0x886/0x15d0 kernel/workqueue.c:2633
 process_scheduled_works kernel/workqueue.c:2706 [inline]
 worker_thread+0x8b9/0x1290 kernel/workqueue.c:2787
 kthread+0x2c6/0x3a0 kernel/kthread.c:388
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147