sched: DL replenish lagged too much
BUG: workqueue lockup - pool cpus=0 node=0 flags=0x0 nice=0 stuck for 52s!
Showing busy workqueues and worker pools:
workqueue events: flags=0x100
  pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=22 refcnt=23
    pending: 2*psi_avgs_work, 11*nsim_dev_hwstats_traffic_work, psi_avgs_work, vmstat_shepherd, 6*ovs_dp_masks_rebalance, mptcp_worker
  pwq 6: cpus=1 node=0 flags=0x4 nice=0 active=1 refcnt=2