bridge0: received packet on veth0_to_bridge with own address as source address (addr:ba:86:ba:fa:4d:da, vlan:0) BUG: workqueue lockup - pool cpus=0 node=0 flags=0x0 nice=0 stuck for 34s! Showing busy workqueues and worker pools: workqueue events: flags=0x0 pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=10 refcnt=11 pending: psi_avgs_work, 2*nsim_dev_hwstats_traffic_work, free_obj_work, 4*ovs_dp_masks_rebalance, vmstat_shepherd, psi_avgs_work pwq 6: cpus=1 node=0 flags=0x0 nice=0 active=6 refcnt=7 in-flight: 24:request_firmware_work_func pending: 3*nsim_dev_hwstats_traffic_work, 2*ovs_dp_masks_rebalance workqueue events_long: flags=0x0 pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=5 refcnt=6 pending: 5*defense_work_handler pwq 6: cpus=1 node=0 flags=0x0 nice=0 active=1 refcnt=2 in-flight: 26:defense_work_handler workqueue events_unbound: flags=0x2 pwq 8: cpus=0-1 flags=0x6 nice=0 active=6 refcnt=7 in-flight: 6955:cfg80211_wiphy_work ,1519:linkwatch_event pending: cfg80211_wiphy_work, nsim_dev_trap_report_work, toggle_allocation_gate, nsim_dev_trap_report_work pwq 8: cpus=0-1 flags=0x6 nice=0 active=26 refcnt=27 in-flight: 42:cfg80211_wiphy_work cfg80211_wiphy_work ,1918:cfg80211_wiphy_work cfg80211_wiphy_work ,2003:cfg80211_wiphy_work cfg80211_wiphy_work ,2000:cfg80211_wiphy_work cfg80211_wiphy_work ,41:cfg80211_wiphy_work cfg80211_wiphy_work ,6958:fsnotify_mark_destroy_workfn ,6957:fsnotify_connector_destroy_workfn ,6954:cfg80211_wiphy_work ,12:cfg80211_wiphy_work cfg80211_wiphy_work pending: 2*cfg80211_wiphy_work, 3*nsim_dev_trap_report_work, flush_memcg_stats_dwork, 5*macvlan_process_broadcast workqueue events_power_efficient: flags=0x82 pwq 8: cpus=0-1 flags=0x6 nice=0 active=2 refcnt=3 in-flight: 6956:neigh_periodic_work pending: do_cache_clean pwq 8: cpus=0-1 flags=0x6 nice=0 active=13 refcnt=14 pending: gc_worker, reg_check_chans_work, fb_flashcursor, wg_ratelimiter_gc_entries, 6*check_lifetime, 2*neigh_managed_work, neigh_periodic_work workqueue rcu_gp: flags=0x8 pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=1 refcnt=2 pending: srcu_invoke_callbacks workqueue netns: flags=0x6000a pwq 8: cpus=0-1 flags=0x6 nice=0 active=1 refcnt=4 in-flight: 14:cleanup_net workqueue mm_percpu_wq: flags=0x8 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 ipv6_addrconf: flags=0x6000a pwq 8: cpus=0-1 flags=0x6 nice=0 active=1 refcnt=10 in-flight: 4199(RESCUER):addrconf_verify_work inactive: 5*addrconf_verify_work workqueue bat_events: flags=0x6000a pwq 8: cpus=0-1 flags=0x6 nice=0 active=1 refcnt=49 in-flight: 4274(RESCUER):batadv_dat_purge inactive: batadv_bla_periodic_work, batadv_dat_purge, batadv_bla_periodic_work, batadv_dat_purge, batadv_bla_periodic_work, batadv_dat_purge, batadv_bla_periodic_work, batadv_dat_purge, batadv_bla_periodic_work, 5*batadv_nc_worker, 5*batadv_mcast_mla_update, batadv_iv_send_outstanding_bat_ogm_packet, 5*batadv_purge_orig, 14*batadv_iv_send_outstanding_bat_ogm_packet, 5*batadv_tt_purge 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=0x28 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-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=0x28 pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=3 refcnt=4 pending: wg_packet_tx_worker, wg_packet_encrypt_worker, wg_packet_decrypt_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-crypt-wg1: flags=0x28 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-wg1: flags=0x24 pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=1 refcnt=2 pending: wg_packet_handshake_receive_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 pwq 8: cpus=0-1 flags=0x6 nice=0 active=1 refcnt=2 pending: wg_packet_handshake_send_worker workqueue wg-crypt-wg1: flags=0x28 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-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-crypt-wg2: flags=0x28 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-wg2: flags=0x24 pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=1 refcnt=2 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 pwq 8: cpus=0-1 flags=0x6 nice=0 active=1 refcnt=2 pending: wg_packet_handshake_send_worker workqueue wg-crypt-wg2: flags=0x28 pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=2 refcnt=3 pending: wg_packet_encrypt_worker, wg_packet_tx_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=0x28 pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=3 refcnt=4 pending: wg_packet_tx_worker, wg_packet_encrypt_worker, wg_packet_decrypt_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=0x28 pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=4 refcnt=5 in-flight: 2322:wg_packet_encrypt_worker pending: wg_packet_tx_worker, wg_packet_encrypt_worker, wg_packet_decrypt_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 pwq 8: cpus=0-1 flags=0x6 nice=0 active=1 refcnt=2 pending: wg_packet_handshake_send_worker workqueue wg-crypt-wg1: flags=0x28 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-wg1: flags=0x6 pwq 8: cpus=0-1 flags=0x6 nice=0 active=1 refcnt=2 pending: wg_packet_handshake_send_worker pwq 8: cpus=0-1 flags=0x6 nice=0 active=1 refcnt=2 pending: wg_packet_handshake_send_worker workqueue wg-crypt-wg1: flags=0x28 pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=2 refcnt=3 pending: wg_packet_encrypt_worker, wg_packet_tx_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=0x28 pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=2 refcnt=3 pending: wg_packet_encrypt_worker, wg_packet_tx_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=0x28 pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=2 refcnt=3 pending: wg_packet_encrypt_worker, wg_packet_tx_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 pwq 8: cpus=0-1 flags=0x6 nice=0 active=1 refcnt=2 pending: wg_packet_handshake_send_worker workqueue wg-crypt-wg0: flags=0x28 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 pwq 6: cpus=1 node=0 flags=0x0 nice=0 active=2 refcnt=3 in-flight: 6560:wg_packet_encrypt_worker pending: wg_packet_tx_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=0x28 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=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=0x28 pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=2 refcnt=3 pending: wg_packet_encrypt_worker, wg_packet_tx_worker workqueue loop0: flags=0x6 pwq 8: cpus=0-1 flags=0x6 nice=0 active=1 refcnt=2 pending: loop_rootcg_workfn workqueue loop1: flags=0x6 pwq 8: cpus=0-1 flags=0x6 nice=0 active=1 refcnt=2 pending: loop_rootcg_workfn workqueue xfs-sync/loop0: flags=0x4 pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=1 refcnt=2 pending: xfs_log_worker pool 2: cpus=0 node=0 flags=0x0 nice=0 hung=34s workers=6 idle: 6667 6616 6621 9 10 pool 6: cpus=1 node=0 flags=0x0 nice=0 hung=1s workers=8 idle: 1818 6622 6558 6661 6613 pool 8: cpus=0-1 flags=0x6 nice=0 hung=0s workers=14 manager: 6960 Showing backtraces of running workers in stalled CPU-bound worker pools: pool 2: task:kworker/0:2 state:R running task stack:0 pid:2322 tgid:2322 ppid:2 task_flags:0x4208060 flags:0x00000010 Workqueue: wg-crypt-wg0 wg_packet_encrypt_worker Call trace: __switch_to+0x418/0x87c arch/arm64/kernel/process.c:741 (T) context_switch kernel/sched/core.c:5357 [inline] __schedule+0x13b0/0x2864 kernel/sched/core.c:6961 preempt_schedule_common+0xe0/0x194 kernel/sched/core.c:7145 preempt_schedule+0x60/0x80 kernel/sched/core.c:7169 __local_bh_enable_ip+0x20c/0x35c kernel/softirq.c:414 __raw_spin_unlock_bh include/linux/spinlock_api_smp.h:167 [inline] _raw_spin_unlock_bh+0x3c/0x4c kernel/locking/spinlock.c:210 spin_unlock_bh include/linux/spinlock.h:396 [inline] ptr_ring_consume_bh include/linux/ptr_ring.h:367 [inline] wg_packet_encrypt_worker+0x21c/0x11e0 drivers/net/wireguard/send.c:293 process_one_work+0x7e8/0x155c kernel/workqueue.c:3236 process_scheduled_works kernel/workqueue.c:3319 [inline] worker_thread+0x958/0xed8 kernel/workqueue.c:3400 kthread+0x5fc/0x75c kernel/kthread.c:463 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:844 bridge0: received packet on veth0_to_bridge with own address as source address (addr:ba:86:ba:fa:4d:da, vlan:0) bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:1b, vlan:0) bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:1b, vlan:0) bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:1b, vlan:0) kworker/u8:3: page allocation failure: order:0, mode:0x40820(GFP_ATOMIC|__GFP_COMP), nodemask=(null),cpuset=/,mems_allowed=0 CPU: 0 UID: 0 PID: 42 Comm: kworker/u8:3 Not tainted 6.17.0-rc1-syzkaller-g8f5ae30d69d7 #0 PREEMPT Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025 Workqueue: events_unbound cfg80211_wiphy_work 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 warn_alloc+0x1f8/0x30c mm/page_alloc.c:3932 __alloc_pages_slowpath+0xa28/0xac4 mm/page_alloc.c:4888 __alloc_frozen_pages_noprof+0x2c4/0x318 mm/page_alloc.c:5161 alloc_pages_mpol+0x1e4/0x460 mm/mempolicy.c:2416 alloc_frozen_pages_noprof+0xe0/0x210 mm/mempolicy.c:2487 alloc_slab_page mm/slub.c:2487 [inline] allocate_slab+0x108/0x3d8 mm/slub.c:2663 new_slab mm/slub.c:2709 [inline] ___slab_alloc+0x770/0xf24 mm/slub.c:3891 __slab_alloc+0x74/0xd0 mm/slub.c:3981 __slab_alloc_node mm/slub.c:4056 [inline] slab_alloc_node mm/slub.c:4217 [inline] kmem_cache_alloc_noprof+0x2e0/0x3e8 mm/slub.c:4236 skb_clone+0x1b4/0x328 net/core/skbuff.c:2049 deliver_clone net/bridge/br_forward.c:125 [inline] br_flood+0x380/0x5e8 net/bridge/br_forward.c:249 br_handle_frame_finish+0x1034/0x14c0 net/bridge/br_input.c:221 br_nf_hook_thresh+0x344/0x3d8 net/bridge/br_netfilter_hooks.c:-1 br_nf_pre_routing_finish_ipv6+0x87c/0xb98 net/bridge/br_netfilter_ipv6.c:-1 NF_HOOK include/linux/netfilter.h:318 [inline] br_nf_pre_routing_ipv6+0x2c4/0x5ac net/bridge/br_netfilter_ipv6.c:184 br_nf_pre_routing+0x578/0x1130 net/bridge/br_netfilter_hooks.c:508 nf_hook_entry_hookfn include/linux/netfilter.h:158 [inline] nf_hook_bridge_pre net/bridge/br_input.c:283 [inline] br_handle_frame+0x7b0/0x10b8 net/bridge/br_input.c:434 __netif_receive_skb_core+0xe34/0x3850 net/core/dev.c:5866 __netif_receive_skb_one_core net/core/dev.c:5977 [inline] __netif_receive_skb+0x78/0x2a8 net/core/dev.c:6092 process_backlog+0x60c/0x10e4 net/core/dev.c:6444 __napi_poll+0xb4/0x310 net/core/dev.c:7489 napi_poll net/core/dev.c:7552 [inline] net_rx_action+0x5f4/0xd58 net/core/dev.c:7679 handle_softirqs+0x328/0xc88 kernel/softirq.c:579 __do_softirq+0x14/0x20 kernel/softirq.c:613 ____do_softirq+0x14/0x20 arch/arm64/kernel/irq.c:68 call_on_irq_stack+0x30/0x48 arch/arm64/kernel/entry.S:891 do_softirq_own_stack+0x20/0x2c arch/arm64/kernel/irq.c:73 do_softirq+0x90/0xf8 kernel/softirq.c:480 __local_bh_enable_ip+0x240/0x35c kernel/softirq.c:407 __raw_spin_unlock_bh include/linux/spinlock_api_smp.h:167 [inline] _raw_spin_unlock_bh+0x3c/0x4c kernel/locking/spinlock.c:210 spin_unlock_bh include/linux/spinlock.h:396 [inline] cfg80211_put_bss+0x1d4/0x228 net/wireless/scan.c:3354 ieee80211_rx_bss_put+0x50/0x68 net/mac80211/scan.c:37 ieee80211_rx_bss_info net/mac80211/ibss.c:1166 [inline] ieee80211_rx_mgmt_probe_beacon net/mac80211/ibss.c:1573 [inline] ieee80211_ibss_rx_queued_mgmt+0x152c/0x240c net/mac80211/ibss.c:1600 ieee80211_iface_process_skb net/mac80211/iface.c:1699 [inline] ieee80211_iface_work+0x754/0x106c net/mac80211/iface.c:1753 cfg80211_wiphy_work+0x294/0x49c net/wireless/core.c:435 process_one_work+0x7e8/0x155c kernel/workqueue.c:3236 process_scheduled_works kernel/workqueue.c:3319 [inline] worker_thread+0x958/0xed8 kernel/workqueue.c:3400 kthread+0x5fc/0x75c kernel/kthread.c:463 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:844 Mem-Info: active_anon:1090 inactive_anon:11737 isolated_anon:0 active_file:2643 inactive_file:4577 isolated_file:0 unevictable:768 dirty:0 writeback:0 slab_reclaimable:10203 slab_unreclaimable:1516376 mapped:27891 shmem:9205 pagetables:875 sec_pagetables:0 bounce:0 kernel_misc_reclaimable:0 free:13740 free_pcp:5643 free_cma:7360 Node 0 active_anon:4360kB inactive_anon:46948kB active_file:10572kB inactive_file:18308kB unevictable:3072kB isolated(anon):0kB isolated(file):0kB mapped:111564kB dirty:0kB writeback:0kB shmem:36820kB shmem_thp:0kB shmem_pmdmapped:0kB anon_thp:0kB kernel_stack:10008kB pagetables:3500kB sec_pagetables:0kB all_unreclaimable? no Balloon:0kB Node 0 DMA free:46704kB boost:0kB min:20864kB low:26080kB high:31296kB reserved_highatomic:6144KB free_highatomic:1352KB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:3145728kB managed:3080192kB mlocked:0kB bounce:0kB free_pcp:11188kB local_pcp:2760kB free_cma:29440kB lowmem_reserve[]: 0 0 3492 3492 3492 Node 0 Normal free:8256kB boost:54412kB min:78600kB low:84644kB high:90688kB reserved_highatomic:6144KB free_highatomic:804KB active_anon:4360kB inactive_anon:46948kB active_file:10572kB inactive_file:18308kB unevictable:3072kB writepending:0kB present:5242880kB managed:3575940kB mlocked:0kB bounce:0kB free_pcp:11384kB local_pcp:2876kB free_cma:0kB lowmem_reserve[]: 0 0 0 0 0 Node 0 DMA: 0*4kB 1*8kB (H) 1*16kB (U) 1*32kB (U) 1*64kB (H) 1*128kB (U) 3*256kB (UHC) 1*512kB (C) 2*1024kB (UH) 1*2048kB (U) 10*4096kB (MC) = 46584kB Node 0 Normal: 1*4kB (H) 8*8kB (H) 4*16kB (H) 1*32kB (H) 2*64kB (H) 4*128kB (H) 1*256kB (M) 14*512kB (M) 0*1024kB 0*2048kB 0*4096kB = 8228kB Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=1048576kB Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=32768kB Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=2048kB Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=64kB 16422 total pagecache pages 0 pages in swap cache Free swap = 124996kB Total swap = 124996kB 2097152 pages RAM 0 pages HighMem/MovableOnly 433119 pages reserved 8192 pages cma reserved 0 pages hwpoisoned