BUG: workqueue lockup - pool cpus=1 node=0 flags=0x0 nice=0 stuck for 31s!
Showing busy workqueues and worker pools:
workqueue events: flags=0x0
  pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=7/256 refcnt=8
    pending: 7*cfg80211_wiphy_work
  pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=1/256 refcnt=2
    pending: kfree_rcu_monitor
workqueue rcu_gp: flags=0x8
  pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=1/256 refcnt=2
    in-flight: 288:wait_rcu_exp_gp
pool 0: cpus=0 node=0 flags=0x0 nice=0 hung=0s workers=3 idle: 97 289
Showing backtraces of running workers in stalled CPU-bound worker pools: