ret_from_fork+0x675/0x7d0 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 BUG: workqueue lockup - pool cpus=1 node=0 flags=0x0 nice=0 stuck for 233s! Showing busy workqueues and worker pools: workqueue events: flags=0x100 pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=18 refcnt=19 in-flight: 5909:bpf_prog_free_deferred pending: 2*nsim_dev_hwstats_traffic_work, 3*ovs_dp_masks_rebalance, 3*psi_avgs_work, vmstat_shepherd, ovs_dp_masks_rebalance, ima_keys_handler, switchdev_deferred_process_work, 5*rht_deferred_worker pwq 6: cpus=1 node=0 flags=0x0 nice=0 active=5 refcnt=6 pending: 5*nsim_dev_hwstats_traffic_work workqueue events_highpri: flags=0x110 pwq 3: cpus=0 node=0 flags=0x0 nice=-20 active=1 refcnt=2 pending: fill_page_cache_func workqueue events_long: flags=0x100 pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=14 refcnt=15 pending: 5*defense_work_handler, 4*br_multicast_gc_work, br_fdb_cleanup, br_multicast_gc_work, br_fdb_cleanup, br_multicast_gc_work, br_fdb_cleanup workqueue events_unbound: flags=0x2 pwq 8: cpus=0-1 flags=0x4 nice=0 active=12 refcnt=13 in-flight: 6691:cfg80211_wiphy_work cfg80211_wiphy_work ,7017:toggle_allocation_gate pending: 9*cfg80211_wiphy_work workqueue events_unbound: flags=0x2 pwq 8: cpus=0-1 flags=0x4 nice=0 active=16 refcnt=17 in-flight: 6668:linkwatch_event pending: 7*nsim_dev_trap_report_work, 5*macvlan_process_broadcast, 3*idle_cull_fn workqueue events_power_efficient: flags=0x180 pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=5 refcnt=6 pending: neigh_managed_work, gc_worker, neigh_periodic_work, 2*check_lifetime workqueue kvfree_rcu_reclaim: flags=0xa pwq 8: cpus=0-1 flags=0x4 nice=0 active=1 refcnt=2 pending: kfree_rcu_monitor workqueue mm_percpu_wq: flags=0x8 pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=1 refcnt=2 pending: vmstat_update workqueue writeback: flags=0x4a pwq 8: cpus=0-1 flags=0x4 nice=0 active=1 refcnt=2 pending: wb_workfn workqueue mld: flags=0x40108 pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=1 refcnt=2 pending: mld_ifc_work workqueue ipv6_addrconf: flags=0x6000a pwq 8: cpus=0-1 flags=0x4 nice=0 active=1 refcnt=10 pending: addrconf_verify_work inactive: 6*addrconf_verify_work workqueue krxrpcd: flags=0x2001a pwq 9: cpus=0-1 node=0 flags=0x4 nice=-20 active=1 refcnt=4 pending: rxrpc_peer_keepalive_worker workqueue bat_events: flags=0x6000a pwq 8: cpus=0-1 flags=0x4 nice=0 active=1 refcnt=37 pending: batadv_iv_send_outstanding_bat_ogm_packet inactive: 4*batadv_purge_orig, 2*batadv_iv_send_outstanding_bat_ogm_packet, 2*batadv_purge_orig, 15*batadv_iv_send_outstanding_bat_ogm_packet, 6*batadv_mcast_mla_update, batadv_tt_purge, 2*batadv_bla_periodic_work, batadv_dat_purge workqueue wg-kex-wg0: flags=0x6 pwq 8: cpus=0-1 flags=0x4 nice=0 active=2 refcnt=3 pending: 2*wg_packet_handshake_send_worker workqueue wg-kex-wg1: flags=0x6 pwq 8: cpus=0-1 flags=0x4 nice=0 active=2 refcnt=3 pending: 2*wg_packet_handshake_send_worker workqueue wg-kex-wg2: flags=0x6 pwq 8: cpus=0-1 flags=0x4 nice=0 active=2 refcnt=3 pending: 2*wg_packet_handshake_send_worker workqueue wg-kex-wg0: flags=0x6 pwq 8: cpus=0-1 flags=0x4 nice=0 active=1 refcnt=2 pending: wg_packet_handshake_send_worker workqueue wg-crypt-wg0: flags=0x128 pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=1 refcnt=2 pending: wg_packet_encrypt_worker pwq 6: cpus=1 node=0 flags=0x0 nice=0 active=1 refcnt=2 pending: wg_packet_encrypt_worker workqueue wg-kex-wg1: flags=0x6 pwq 8: cpus=0-1 flags=0x4 nice=0 active=1 refcnt=2 pending: wg_packet_handshake_send_worker workqueue wg-crypt-wg1: flags=0x128 pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=1 refcnt=2 pending: wg_packet_encrypt_worker pwq 6: cpus=1 node=0 flags=0x0 nice=0 active=1 refcnt=2 pending: wg_packet_encrypt_worker workqueue wg-kex-wg2: flags=0x6 pwq 8: cpus=0-1 flags=0x4 nice=0 active=1 refcnt=2 pending: wg_packet_handshake_send_worker workqueue wg-crypt-wg2: flags=0x128 pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=1 refcnt=2 pending: wg_packet_encrypt_worker pwq 6: cpus=1 node=0 flags=0x0 nice=0 active=1 refcnt=2 pending: wg_packet_encrypt_worker workqueue wg-crypt-wg0: flags=0x128 pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=1 refcnt=2 pending: wg_packet_encrypt_worker pwq 6: cpus=1 node=0 flags=0x0 nice=0 active=1 refcnt=2 pending: wg_packet_encrypt_worker workqueue wg-crypt-wg1: flags=0x128 pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=1 refcnt=2 pending: wg_packet_encrypt_worker pwq 6: cpus=1 node=0 flags=0x0 nice=0 active=1 refcnt=2 pending: wg_packet_encrypt_worker workqueue wg-crypt-wg2: flags=0x128 pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=1 refcnt=2 pending: wg_packet_encrypt_worker pwq 6: cpus=1 node=0 flags=0x0 nice=0 active=1 refcnt=2 pending: wg_packet_encrypt_worker workqueue wg-kex-wg0: flags=0x6 pwq 8: cpus=0-1 flags=0x4 nice=0 active=2 refcnt=3 pending: 2*wg_packet_handshake_send_worker workqueue wg-kex-wg1: flags=0x6 pwq 8: cpus=0-1 flags=0x4 nice=0 active=2 refcnt=3 pending: 2*wg_packet_handshake_send_worker workqueue wg-crypt-wg1: flags=0x128 pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=1 refcnt=2 pending: wg_packet_encrypt_worker pwq 6: cpus=1 node=0 flags=0x0 nice=0 active=1 refcnt=2 pending: wg_packet_encrypt_worker workqueue wg-crypt-wg2: flags=0x128 pwq 6: cpus=1 node=0 flags=0x0 nice=0 active=1 refcnt=2 pending: wg_packet_encrypt_worker workqueue wg-crypt-wg0: flags=0x128 pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=1 refcnt=2 pending: wg_packet_encrypt_worker workqueue wg-crypt-wg1: flags=0x128 pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=1 refcnt=2 pending: wg_packet_encrypt_worker pwq 6: cpus=1 node=0 flags=0x0 nice=0 active=1 refcnt=2 pending: wg_packet_encrypt_worker workqueue wg-crypt-wg2: flags=0x128 pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=1 refcnt=2 pending: wg_packet_encrypt_worker pwq 6: cpus=1 node=0 flags=0x0 nice=0 active=2 refcnt=3 pending: wg_packet_decrypt_worker, wg_packet_encrypt_worker pool 2: cpus=0 node=0 flags=0x0 nice=0 hung=234s workers=8 idle: 5922 10 5924 1206 5843 9 5995 pool 8: cpus=0-1 flags=0x4 nice=0 hung=234s workers=67 idle: 7015 13 7007 7039 6026 7025 7026 7001 6671 7042 7005 6685 1161 7037 6672 6689 6686 7044 6688 6680 7024 6684 7000 7029 57 7036 12 7023 7027 7014 6683 6682 6693 7035 7016 7033 7010 50 6667 7003 7019 6025 7022 7028 6677 75 6681 36 1149 7031 7034 7040 7041 7008 5974 6669 6024 6692 7030 7006 7009 7038 7002 7020 Showing backtraces of running workers in stalled CPU-bound worker pools: