BUG: workqueue lockup - pool cpus=0 node=0 flags=0x0 nice=0 stuck for 178s! Showing busy workqueues and worker pools: workqueue events: flags=0x0 pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=7/256 refcnt=8 pending: bpf_prog_free_deferred, vmstat_shepherd, ovs_dp_masks_rebalance, psi_avgs_work, ovs_dp_masks_rebalance, kfree_rcu_monitor, free_obj_work workqueue events_freezable: flags=0x4 pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=1/256 refcnt=2 pending: update_balloon_stats_func workqueue events_power_efficient: flags=0x80 pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=1/256 refcnt=2 in-flight: 27:gc_worker pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=3/256 refcnt=4 pending: crda_timeout_work, reg_check_chans_work, check_lifetime workqueue mm_percpu_wq: flags=0x8 pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=1/256 refcnt=2 pending: vmstat_update workqueue dm_bufio_cache: flags=0x8 pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=1/256 refcnt=2 pending: work_fn workqueue mld: flags=0x40008 pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=1/1 refcnt=14 pending: mld_dad_work inactive: 4*mld_ifc_work, mld_dad_work, 7*mld_ifc_work workqueue bat_events: flags=0xe000a workqueue wg-kex-wg0: flags=0x24 pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=1/256 refcnt=2 pending: wg_packet_handshake_receive_worker workqueue wg-crypt-wg0: flags=0x28 pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=3/256 refcnt=4 pending: wg_packet_encrypt_worker, wg_packet_tx_worker, wg_packet_decrypt_worker workqueue wg-kex-wg1: flags=0x24 pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=1/256 refcnt=2 pending: wg_packet_handshake_receive_worker workqueue wg-crypt-wg1: flags=0x28 pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=3/256 refcnt=4 pending: wg_packet_decrypt_worker, wg_packet_encrypt_worker, wg_packet_tx_worker workqueue wg-kex-wg2: flags=0x24 pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=1/256 refcnt=2 pending: wg_packet_handshake_receive_worker workqueue wg-crypt-wg2: flags=0x28 pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=2/256 refcnt=3 pending: wg_packet_encrypt_worker, wg_packet_tx_worker pool 2: cpus=1 node=0 flags=0x0 nice=0 hung=0s workers=5 idle: 54 5885 5890 23 pool 4: cpus=0-1 flags=0x4 nice=0 hung=0s workers=12 idle: 1121 2998 11 2932 42 48 2989 59 231 2954 12 Showing backtraces of running workers in stalled CPU-bound worker pools: