BUG: workqueue lockup - pool cpus=0 node=0 flags=0x0 nice=0 stuck for 238s!
BUG: workqueue lockup - pool cpus=1 node=0 flags=0x0 nice=0 stuck for 238s!
Showing busy workqueues and worker pools:
workqueue events: flags=0x0
  pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=4/256 refcnt=5
    pending: nsim_dev_hwstats_traffic_work, ovs_dp_masks_rebalance, ovs_dp_masks_rebalance, ovs_dp_masks_rebalance
  pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=14/256 refcnt=15
    in-flight: 126:switchdev_deferred_process_work
    pending: nsim_dev_hwstats_traffic_work, nsim_dev_hwstats_traffic_work, nsim_dev_hwstats_traffic_work, nsim_dev_hwstats_traffic_work, psi_avgs_work, release_one_tty, release_one_tty, l2cap_info_timeout, ovs_dp_masks_rebalance, ovs_dp_masks_rebalance, kfree_rcu_monitor, ima_keys_handler, vmstat_shepherd
workqueue events_long: flags=0x0
  pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=2/256 refcnt=3
    pending: defense_work_handler, defense_work_handler
workqueue events_unbound: flags=0x2
  pwq 4: cpus=0-1 flags=0x4 nice=0 active=7/512 refcnt=10
    in-flight: 4350:nsim_dev_trap_report_work, 4379:nsim_dev_trap_report_work
    pending: nsim_dev_trap_report_work, toggle_allocation_gate, nsim_dev_trap_report_work, nsim_dev_trap_report_work, flush_memcg_stats_dwork
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 0: cpus=0 node=0 flags=0x0 nice=0 active=2/256 refcnt=3
    pending: crda_timeout_work, reg_check_chans_work
workqueue netns: flags=0xe000a
  pwq 4: cpus=0-1 flags=0x4 nice=0 active=1/1 refcnt=4
    in-flight: 11:cleanup_net
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 kblockd: flags=0x18
  pwq 1: cpus=0 node=0 flags=0x0 nice=-20 active=2/256 refcnt=3
    pending: blk_mq_timeout_work, blk_mq_timeout_work
workqueue krxrpcd: flags=0x0
  pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=1/1 refcnt=2
    pending: rxrpc_peer_keepalive_worker
workqueue bat_events: flags=0xe000a
  pwq 4: cpus=0-1 flags=0x4 nice=0 active=1/1 refcnt=26
    pending: batadv_nc_worker
    inactive: batadv_nc_worker, batadv_nc_worker, batadv_nc_worker, batadv_nc_worker, batadv_mcast_mla_update, batadv_mcast_mla_update, batadv_mcast_mla_update, batadv_mcast_mla_update, batadv_mcast_mla_update, batadv_purge_orig, batadv_iv_send_outstanding_bat_ogm_packet, batadv_iv_send_outstanding_bat_ogm_packet, batadv_iv_send_outstanding_bat_ogm_packet, batadv_iv_send_outstanding_bat_ogm_packet, batadv_iv_send_outstanding_bat_ogm_packet, batadv_iv_send_outstanding_bat_ogm_packet, batadv_iv_send_outstanding_bat_ogm_packet, batadv_bla_periodic_work, batadv_dat_purge, batadv_dat_purge, batadv_bla_periodic_work, batadv_dat_purge
workqueue hci0: flags=0xa0012
  pwq 5: cpus=0-1 node=0 flags=0x4 nice=-20 active=1/1 refcnt=4
    pending: hci_conn_timeout
workqueue wg-crypt-wg0: flags=0x28
  pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=1/256 refcnt=2
    pending: wg_packet_encrypt_worker
workqueue wg-kex-wg1: flags=0x6
  pwq 4: cpus=0-1 flags=0x4 nice=0 active=1/256 refcnt=4
    pending: wg_packet_handshake_send_worker
workqueue wg-kex-wg2: flags=0x6
  pwq 4: cpus=0-1 flags=0x4 nice=0 active=1/256 refcnt=4
    pending: wg_packet_handshake_send_worker
workqueue wg-kex-wg0: flags=0x6
  pwq 4: cpus=0-1 flags=0x4 nice=0 active=1/256 refcnt=4
    pending: wg_packet_handshake_send_worker
workqueue wg-kex-wg1: flags=0x6
  pwq 4: cpus=0-1 flags=0x4 nice=0 active=2/256 refcnt=5
    pending: wg_packet_handshake_send_worker, wg_packet_handshake_send_worker
workqueue wg-kex-wg2: flags=0x6
  pwq 4: cpus=0-1 flags=0x4 nice=0 active=2/256 refcnt=5
    pending: wg_packet_handshake_send_worker, wg_packet_handshake_send_worker
workqueue wg-kex-wg0: flags=0x6
  pwq 4: cpus=0-1 flags=0x4 nice=0 active=1/256 refcnt=4
    pending: wg_packet_handshake_send_worker
workqueue wg-kex-wg1: flags=0x6
  pwq 4: cpus=0-1 flags=0x4 nice=0 active=1/256 refcnt=4
    pending: wg_packet_handshake_send_worker
workqueue wg-kex-wg0: flags=0x6
  pwq 4: cpus=0-1 flags=0x4 nice=0 active=1/256 refcnt=4
    pending: wg_packet_handshake_send_worker
workqueue wg-kex-wg1: flags=0x6
  pwq 4: cpus=0-1 flags=0x4 nice=0 active=1/256 refcnt=4
    pending: wg_packet_handshake_send_worker
workqueue wg-kex-wg2: flags=0x6
  pwq 4: cpus=0-1 flags=0x4 nice=0 active=1/256 refcnt=4
    pending: wg_packet_handshake_send_worker
workqueue wg-kex-wg2: flags=0x6
  pwq 4: cpus=0-1 flags=0x4 nice=0 active=2/256 refcnt=5
    pending: wg_packet_handshake_send_worker, wg_packet_handshake_send_worker
workqueue wg-kex-wg0: flags=0x6
  pwq 4: cpus=0-1 flags=0x4 nice=0 active=1/256 refcnt=4
    pending: wg_packet_handshake_send_worker
workqueue wg-kex-wg1: flags=0x6
  pwq 4: cpus=0-1 flags=0x4 nice=0 active=1/256 refcnt=4
    pending: wg_packet_handshake_send_worker
workqueue wg-kex-wg2: flags=0x6
  pwq 4: cpus=0-1 flags=0x4 nice=0 active=1/256 refcnt=4
    pending: wg_packet_handshake_send_worker
workqueue phy5: flags=0xa0002
  pwq 4: cpus=0-1 flags=0x4 nice=0 active=1/1 refcnt=4
    pending: ieee80211_iface_work
workqueue phy6: flags=0xa0002
  pwq 4: cpus=0-1 flags=0x4 nice=0 active=1/1 refcnt=4
    pending: ieee80211_iface_work
workqueue phy7: flags=0xa0002
  pwq 4: cpus=0-1 flags=0x4 nice=0 active=1/1 refcnt=4
    pending: ieee80211_iface_work
workqueue phy8: flags=0xa0002
  pwq 4: cpus=0-1 flags=0x4 nice=0 active=1/1 refcnt=4
    pending: ieee80211_iface_work
workqueue phy9: flags=0xa0002
  pwq 4: cpus=0-1 flags=0x4 nice=0 active=1/1 refcnt=4
    pending: ieee80211_iface_work
workqueue phy10: flags=0xa0002
  pwq 4: cpus=0-1 flags=0x4 nice=0 active=1/1 refcnt=4
    pending: ieee80211_iface_work
workqueue phy11: flags=0xa0002
  pwq 4: cpus=0-1 flags=0x4 nice=0 active=1/1 refcnt=4
    pending: ieee80211_iface_work
workqueue phy12: flags=0xa0002
  pwq 4: cpus=0-1 flags=0x4 nice=0 active=1/1 refcnt=4
    pending: ieee80211_iface_work
workqueue hci2: flags=0xa0012
  pwq 5: cpus=0-1 node=0 flags=0x4 nice=-20 active=1/1 refcnt=5
    pending: hci_cmd_timeout
    inactive: hci_conn_timeout
pool 0: cpus=0 node=0 flags=0x0 nice=0 hung=239s workers=8 idle: 14 4300 4298 4240 7 4353 4302
pool 4: cpus=0-1 flags=0x4 nice=0 hung=239s workers=14 idle: 4348 4317 33 4296 46 4424 4380 4351 75 9 4341
------------[ cut here ]------------
WARNING: CPU: 0 PID: 4452 at kernel/rcu/tree_stall.h:970 rcu_check_gp_start_stall+0x2c8/0x450 kernel/rcu/tree_stall.h:955
Modules linked in:
CPU: 0 PID: 4452 Comm: syz.4.25 Not tainted 6.1.131-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
RIP: 0010:rcu_check_gp_start_stall+0x2c8/0x450 kernel/rcu/tree_stall.h:970
Code: c7 c7 40 4f 40 97 be 04 00 00 00 e8 52 d9 6d 00 b8 01 00 00 00 87 05 e7 1b cc 15 85 c0 0f 85 1c ff ff ff 48 c7 c0 80 35 33 8d <0f> 0b 49 39 c7 74 47 48 c7 c0 34 e9 a0 8e 48 c1 e8 03 42 0f b6 04
RSP: 0018:ffffc90000007c58 EFLAGS: 00010046
RAX: ffffffff8d333580 RBX: 00000000ffffd796 RCX: ffffffff8174334e
RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffffffff97404f40
RBP: ffffc90000007eb0 R08: dffffc0000000000 R09: 0000000000000003
R10: ffffffffffffffff R11: dffffc0000000001 R12: dffffc0000000000
R13: ffff8880b8e3b892 R14: 0000000000000246 R15: ffffffff8d333580
FS:  00007f31868336c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f3185ba6088 CR3: 000000001cf71000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 rcu_core+0x699/0x1820 kernel/rcu/tree.c:2552
 handle_softirqs+0x2ee/0xa40 kernel/softirq.c:578
 do_softirq+0x162/0x240 kernel/softirq.c:479
 </IRQ>
 <TASK>
 __local_bh_enable_ip+0x1b1/0x1f0 kernel/softirq.c:403
 fpu__restore_sig+0xa3f/0x1300 arch/x86/kernel/fpu/signal.c:493
 restore_sigcontext+0x633/0x700 arch/x86/kernel/signal.c:140
 __do_sys_rt_sigreturn+0x190/0x250 arch/x86/kernel/signal.c:675
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f318598d169
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f31868330e8 EFLAGS: 00000246
RAX: fffffffffffffffc RBX: 00007f3185ba6088 RCX: 00007f318598d169
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f3185ba6088
RBP: 00007f3185ba6080 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f3185ba608c
R13: 0000000000000000 R14: 00007ffd5be74690 R15: 00007ffd5be74778
 </TASK>