bridge0: received packet on veth1_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:1b, vlan:0) BUG: workqueue lockup - pool cpus=0 node=0 flags=0x0 nice=0 stuck for 46s! BUG: workqueue lockup - pool cpus=0 node=0 flags=0x0 nice=-20 stuck for 44s! Showing busy workqueues and worker pools: workqueue events: flags=0x100 pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=25 refcnt=26 in-flight: 4882:switchdev_deferred_process_work for 103s switchdev_deferred_process_work ,5422:netdev_work_proc for 103s netdev_work_proc pending: psi_avgs_work, 9*nsim_dev_hwstats_traffic_work, vmstat_shepherd, 2*psi_avgs_work, 4*ovs_dp_masks_rebalance, free_obj_work, rht_deferred_worker, 2*rt6_probe_deferred pwq 6: cpus=1 node=0 flags=0x0 nice=0 active=2 refcnt=3 pending: nsim_dev_hwstats_traffic_work, psi_avgs_work workqueue events_long: flags=0x100 pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=1 refcnt=2 pending: br_multicast_gc_work workqueue events_unbound: flags=0x2 pwq 8: cpus=0-1 flags=0x6 nice=0 active=13 refcnt=14 in-flight: 1248:cfg80211_wiphy_work for 100s cfg80211_wiphy_work ,12:cfg80211_wiphy_work for 100s cfg80211_wiphy_work ,40:cfg80211_wiphy_work for 55s ,1496:cfg80211_wiphy_work for 92s cfg80211_wiphy_work pending: macvlan_process_broadcast, cfg80211_wiphy_work, 4*macvlan_process_broadcast pwq 8: cpus=0-1 flags=0x6 nice=0 active=26 refcnt=27 in-flight: 194:cfg80211_wiphy_work for 78s cfg80211_wiphy_work ,3030:cfg80211_wiphy_work for 81s cfg80211_wiphy_work ,9617:linkwatch_event for 5s ,1198:cfg80211_wiphy_work for 77s cfg80211_wiphy_work ,3069:cfg80211_wiphy_work for 73s cfg80211_wiphy_work ,58:cfg80211_wiphy_work for 98s cfg80211_wiphy_work pending: 4*nsim_dev_trap_report_work, toggle_allocation_gate, nsim_dev_trap_report_work, 2*macvlan_process_broadcast, 3*nsim_dev_trap_report_work, flush_memcg_stats_dwork, crng_reseed, 2*nsim_dev_trap_report_work workqueue events_power_efficient: flags=0x82 pwq 8: cpus=0-1 flags=0x6 nice=0 active=4 refcnt=5 pending: gc_worker, do_cache_clean, 2*check_lifetime pwq 8: cpus=0-1 flags=0x6 nice=0 active=10 refcnt=11 pending: reg_check_chans_work, neigh_managed_work, wg_ratelimiter_gc_entries, hash_ipportnet4_gc, fb_flashcursor, neigh_periodic_work, 2*check_lifetime, neigh_managed_work, check_lifetime workqueue events_dfl_long: flags=0x2 pwq 8: cpus=0-1 flags=0x6 nice=0 active=6 refcnt=7 pending: 6*defense_work_handler workqueue mm_percpu_wq: flags=0x108 pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=1 refcnt=2 pending: vmstat_update pwq 6: cpus=1 node=0 flags=0x0 nice=0 active=1 refcnt=2 pending: vmstat_update workqueue kblockd: flags=0x118 pwq 3: cpus=0 node=0 flags=0x0 nice=-20 active=2 refcnt=3 pending: blk_mq_requeue_work, blk_mq_timeout_work workqueue mld: flags=0x40108 pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=1 refcnt=9 pending: mld_ifc_work inactive: 7*mld_ifc_work workqueue ipv6_addrconf: flags=0x6000a pwq 8: cpus=0-1 flags=0x6 nice=0 active=1 refcnt=36 in-flight: 54:addrconf_dad_work for 102s inactive: 26*addrconf_dad_work, 6*addrconf_verify_work workqueue bat_events: flags=0x6000a pwq 8: cpus=0-1 flags=0x6 nice=0 active=1 refcnt=46 MAYDAY in-flight: 2881(RESCUER):batadv_tt_purge for 0s pending: mayday_cursor_func inactive: batadv_tt_purge, batadv_dat_purge, batadv_bla_periodic_work, batadv_dat_purge, batadv_bla_periodic_work, batadv_dat_purge, batadv_bla_periodic_work, 5*batadv_iv_send_outstanding_bat_ogm_packet, batadv_purge_orig, 5*batadv_mcast_mla_update, batadv_purge_orig, 5*batadv_iv_send_outstanding_bat_ogm_packet, batadv_purge_orig, batadv_iv_send_outstanding_bat_ogm_packet, 2*batadv_purge_orig, 6*batadv_iv_send_outstanding_bat_ogm_packet, 2*batadv_tt_purge, batadv_bla_periodic_work, batadv_dat_purge, batadv_bla_periodic_work, batadv_dat_purge workqueue wg-kex-wg0: flags=0x6 pwq 8: cpus=0-1 flags=0x6 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=0x6 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=0x6 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=0x6 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=3 refcnt=4 pending: wg_packet_encrypt_worker, wg_packet_tx_worker, wg_packet_decrypt_worker workqueue wg-kex-wg1: flags=0x6 pwq 8: cpus=0-1 flags=0x6 nice=0 active=1 refcnt=2 in-flight: 13:wg_packet_handshake_send_worker for 7s workqueue wg-crypt-wg1: flags=0x128 pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=3 refcnt=4 in-flight: 5651:wg_packet_decrypt_worker for 46s pending: wg_packet_encrypt_worker, wg_packet_decrypt_worker workqueue wg-kex-wg2: flags=0x124 pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=2 refcnt=3 in-flight: 10:wg_packet_handshake_receive_worker for 69s pending: wg_packet_handshake_receive_worker workqueue wg-kex-wg2: flags=0x6 pwq 8: cpus=0-1 flags=0x6 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=3 refcnt=4 pending: wg_packet_decrypt_worker, wg_packet_encrypt_worker, wg_packet_tx_worker workqueue wg-kex-wg0: flags=0x6 pwq 8: cpus=0-1 flags=0x6 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=0x6 nice=0 active=1 refcnt=2 pending: wg_packet_handshake_send_worker workqueue wg-kex-wg2: flags=0x6 pwq 8: cpus=0-1 flags=0x6 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=0x6 nice=0 active=2 refcnt=3 in-flight: 9616:wg_packet_handshake_send_worker for 1s pending: wg_packet_handshake_send_worker workqueue wg-kex-wg2: flags=0x6 pwq 8: cpus=0-1 flags=0x6 nice=0 active=2 refcnt=3 pending: 2*wg_packet_handshake_send_worker workqueue krds_cp_wq#1/0: flags=0x20002 pwq 8: cpus=0-1 flags=0x6 nice=0 active=1 refcnt=4 pending: rds_connect_worker workqueue wg-kex-wg0: flags=0x6 pwq 8: cpus=0-1 flags=0x6 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=3 refcnt=4 pending: wg_packet_decrypt_worker, wg_packet_tx_worker, 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=0x6 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=3 refcnt=4 pending: wg_packet_decrypt_worker, wg_packet_tx_worker, wg_packet_encrypt_worker workqueue wg-kex-wg2: flags=0x124 pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=1 refcnt=2 pending: wg_packet_handshake_receive_worker pwq 6: cpus=1 node=0 flags=0x0 nice=0 active=1 refcnt=2 in-flight: 4855:wg_packet_handshake_receive_worker for 14s workqueue wg-crypt-wg2: flags=0x128 pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=3 refcnt=4 pending: wg_packet_encrypt_worker, wg_packet_decrypt_worker, wg_packet_tx_worker pool 2: cpus=0 node=0 flags=0x0 nice=0 hung=46s workers=9 idle: 875 4874 9 4801 4853 pool 6: cpus=1 node=0 flags=0x0 nice=0 hung=1s workers=11 idle: 4846 1520 4867 1024 24 4991 4957 26 5840 5839 pool 8: cpus=0-1 flags=0x6 nice=0 hung=0s workers=14 manager: 9618 Showing backtraces of busy workers in stalled worker pools: pool 2: task:kworker/0:8 state:R running task stack:0 pid:5651 tgid:5651 ppid:2 task_flags:0x4208060 flags:0x00000010 Workqueue: wg-crypt-wg1 wg_packet_decrypt_worker Call trace: __switch_to+0x2b4/0x6e4 arch/arm64/kernel/process.c:775 (T) context_switch kernel/sched/core.c:5533 [inline] __schedule+0x135c/0x2b00 kernel/sched/core.c:7284 preempt_schedule_common+0xd4/0x190 kernel/sched/core.c:7463 preempt_schedule+0x60/0x78 kernel/sched/core.c:7487 __local_bh_enable_ip+0x16c/0x234 kernel/softirq.c:480 __raw_spin_unlock_bh include/linux/spinlock_api_smp.h:237 [inline] _raw_spin_unlock_bh+0x3c/0x4c kernel/locking/spinlock.c:245 spin_unlock_bh include/linux/spinlock.h:407 [inline] ptr_ring_consume_bh include/linux/ptr_ring.h:399 [inline] wg_packet_decrypt_worker+0x254/0xa00 drivers/net/wireguard/receive.c:499 process_one_work kernel/workqueue.c:3396 [inline] process_scheduled_works+0x91c/0x1250 kernel/workqueue.c:3479 worker_thread+0x798/0xbd0 kernel/workqueue.c:3560 kthread+0x304/0x3d4 kernel/kthread.c:436 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:854 pool 2: task:kworker/0:1 state:R running task stack:0 pid:10 tgid:10 ppid:2 task_flags:0x4208060 flags:0x20000010 Workqueue: wg-kex-wg2 wg_packet_handshake_receive_worker Call trace: __switch_to+0x2b4/0x6e4 arch/arm64/kernel/process.c:775 (T) context_switch kernel/sched/core.c:5533 [inline] __schedule+0x135c/0x2b00 kernel/sched/core.c:7284 preempt_schedule_common+0xd4/0x190 kernel/sched/core.c:7463 preempt_schedule+0x60/0x78 kernel/sched/core.c:7487 __local_bh_enable_ip+0x16c/0x234 kernel/softirq.c:480 local_bh_enable include/linux/bottom_half.h:33 [inline] put_cpu_fpsimd_context arch/arm64/kernel/fpsimd.c:251 [inline] kernel_neon_begin+0x29c/0x400 arch/arm64/kernel/fpsimd.c:1924 class_ksimd_constructor arch/arm64/include/asm/simd.h:48 [inline] poly1305_blocks+0x110/0x204 lib/crypto/arm64/poly1305.h:30 poly1305_update+0x168/0x39c lib/crypto/poly1305.c:59 __chacha20poly1305_decrypt+0x1f4/0x39c lib/crypto/chacha20poly1305.c:146 chacha20poly1305_decrypt+0x238/0x5e4 lib/crypto/chacha20poly1305.c:186 message_decrypt+0x50/0x90 drivers/net/wireguard/noise.c:477 wg_noise_handshake_consume_initiation+0x1a0/0x53c drivers/net/wireguard/noise.c:612 wg_receive_handshake_packet drivers/net/wireguard/receive.c:144 [inline] wg_packet_handshake_receive_worker+0x54c/0xcf8 drivers/net/wireguard/receive.c:213 process_one_work kernel/workqueue.c:3396 [inline] process_scheduled_works+0x91c/0x1250 kernel/workqueue.c:3479 worker_thread+0x798/0xbd0 kernel/workqueue.c:3560 kthread+0x304/0x3d4 kernel/kthread.c:436 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:854 pool 3: no worker in running state, cpu=0 is busy (nr_workers=2 nr_idle=2) The pool might have trouble waking an idle worker. Backtrace of last woken worker: task:kworker/0:1H state:R running task stack:0 pid:4415 tgid:4415 ppid:2 task_flags:0x4208060 flags:0x00000010 Workqueue: 0x0 (kblockd) Call trace: __switch_to+0x2b4/0x6e4 arch/arm64/kernel/process.c:775 (T) context_switch kernel/sched/core.c:5533 [inline] __schedule+0x135c/0x2b00 kernel/sched/core.c:7284 __schedule_loop kernel/sched/core.c:7361 [inline] schedule+0x13c/0x20c kernel/sched/core.c:7376 worker_thread+0x924/0xbd0 kernel/workqueue.c:3575 kthread+0x304/0x3d4 kernel/kthread.c:436 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:854 NMI backtrace for cpu 0 CPU: 0 UID: 0 PID: 2881 Comm: kworker/R-bat_e Tainted: G L syzkaller #0 PREEMPT Tainted: [L]=SOFTLOCKUP Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/23/2026 Workqueue: bat_events batadv_tt_purge Call trace: show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:499 (C) __dump_stack+0x30/0x40 lib/dump_stack.c:94 dump_stack_lvl+0xd8/0x12c lib/dump_stack.c:120 dump_stack+0x1c/0x28 lib/dump_stack.c:129 nmi_cpu_backtrace+0x270/0x2b8 lib/nmi_backtrace.c:123 nmi_trigger_cpumask_backtrace+0x1c0/0x430 lib/nmi_backtrace.c:66 arch_trigger_cpumask_backtrace+0x30/0x40 arch/arm64/kernel/smp.c:972 cpumask_backtrace+0x28/0x38 lib/nmi_backtrace.c:136 trigger_single_cpu_backtrace include/linux/nmi.h:182 [inline] show_cpu_pool_busy_workers kernel/workqueue.c:7885 [inline] show_cpu_pools_busy_workers+0x640/0x830 kernel/workqueue.c:7899 wq_watchdog_timer_fn+0x648/0x740 kernel/workqueue.c:8015 call_timer_fn+0x198/0x7f4 kernel/time/timer.c:1748 expire_timers kernel/time/timer.c:1799 [inline] __run_timers kernel/time/timer.c:2374 [inline] __run_timer_base+0x530/0x744 kernel/time/timer.c:2386 run_timer_base+0x84/0x1b8 kernel/time/timer.c:2395 run_timer_softirq+0x28/0x48 kernel/time/timer.c:2406 handle_softirqs+0x324/0xcbc kernel/softirq.c:645 __do_softirq+0x14/0x20 kernel/softirq.c:679 ____do_softirq+0x10/0x1c arch/arm64/kernel/irq.c:78 call_on_irq_stack+0x30/0x48 arch/arm64/kernel/entry.S:901 do_softirq_own_stack+0x1c/0x28 arch/arm64/kernel/irq.c:83 do_softirq+0x90/0xf8 kernel/softirq.c:546 __local_bh_enable_ip+0x190/0x234 kernel/softirq.c:473 __raw_spin_unlock_bh include/linux/spinlock_api_smp.h:237 [inline] _raw_spin_unlock_bh+0x3c/0x4c kernel/locking/spinlock.c:245 spin_unlock_bh include/linux/spinlock.h:407 [inline] batadv_tt_local_purge+0x274/0x2f0 net/batman-adv/translation-table.c:1402 batadv_tt_purge+0x44/0x7b4 net/batman-adv/translation-table.c:3753 process_one_work kernel/workqueue.c:3396 [inline] process_scheduled_works+0x91c/0x1250 kernel/workqueue.c:3479 rescuer_thread+0x68c/0xd90 kernel/workqueue.c:3703 kthread+0x304/0x3d4 kernel/kthread.c:436 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:854 net_ratelimit: 104762 callbacks suppressed bridge0: received packet on veth1_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:1b, vlan:0) bridge0: received packet on bridge_slave_1 with own address as source address (addr:aa:aa:aa:aa:aa:1b, vlan:0) bridge0: received packet on bridge_slave_1 with own address as source address (addr:aa:aa:aa:aa:aa:1c, vlan:0) bridge0: received packet on bridge_slave_1 with own address as source address (addr:aa:aa:aa:aa:aa:1b, vlan:0) bridge0: received packet on veth1_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:1b, vlan:0) net_ratelimit: 102140 callbacks suppressed bridge0: received packet on bridge_slave_1 with own address as source address (addr:aa:aa:aa:aa:aa:1b, vlan:0) bridge0: received packet on veth1_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:1b, vlan:0) bridge0: received packet on veth1_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:1b, vlan:0) bridge0: received packet on bridge_slave_1 with own address as source address (addr:aa:aa:aa:aa:aa:1b, vlan:0) bridge0: received packet on bridge_slave_1 with own address as source address (addr:aa:aa:aa:aa:aa:1c, vlan:0)