Extracting prog: 5m0.035842544s Minimizing prog: 30m12.059052061s Simplifying prog options: 8m33.742667939s Extracting C: 1m58.070619841s Simplifying C: 0s extracting reproducer from 1 programs testing a last program of every proc single: executing 1 programs separately with timeout 6m0s testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$unix-ioctl$sock_SIOCETHTOOL detailed listing: executing program 0: r0 = socket$unix(0x1, 0x5, 0x0) ioctl$sock_SIOCETHTOOL(r0, 0x89f0, &(0x7f0000000080)={'bridge0\x00', &(0x7f00000000c0)=@ethtool_regs={0x4, 0x0, 0x1c, "f42a97b96d025891dd3f75fdda624457ad3d5c36389c308570204262"}}) program crashed: INFO: task hung in rtnl_lock single: successfully extracted reproducer found reproducer with 2 syscalls minimizing guilty program testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$unix detailed listing: executing program 0: socket$unix(0x1, 0x5, 0x0) program did not crash testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): ioctl$sock_SIOCETHTOOL detailed listing: executing program 0: ioctl$sock_SIOCETHTOOL(0xffffffffffffffff, 0x89f0, &(0x7f0000000080)={'bridge0\x00', &(0x7f00000000c0)=@ethtool_regs={0x4, 0x0, 0x1c, "f42a97b96d025891dd3f75fdda624457ad3d5c36389c308570204262"}}) program did not crash testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$unix-ioctl$sock_SIOCETHTOOL detailed listing: executing program 0: r0 = socket$unix(0x1, 0x5, 0x0) ioctl$sock_SIOCETHTOOL(r0, 0x89f0, 0x0) program did not crash testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$unix-ioctl$sock_SIOCETHTOOL detailed listing: executing program 0: r0 = socket$unix(0x1, 0x5, 0x0) ioctl$sock_SIOCETHTOOL(r0, 0x89f0, &(0x7f0000000080)={'bridge0\x00', 0x0}) program did not crash testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$unix-ioctl$sock_SIOCETHTOOL detailed listing: executing program 0: r0 = socket$unix(0x1, 0x5, 0x0) ioctl$sock_SIOCETHTOOL(r0, 0x89f0, &(0x7f0000000080)={'bridge0\x00', &(0x7f00000000c0)=@ethtool_regs}) program did not crash extracting C reproducer testing compiled C program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$unix-ioctl$sock_SIOCETHTOOL program crashed: BUG: workqueue lockup a never seen crash title: BUG: workqueue lockup, ignore simplifying guilty program options testing program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$unix-ioctl$sock_SIOCETHTOOL detailed listing: executing program 0: r0 = socket$unix(0x1, 0x5, 0x0) ioctl$sock_SIOCETHTOOL(r0, 0x89f0, &(0x7f0000000080)={'bridge0\x00', &(0x7f00000000c0)=@ethtool_regs={0x4, 0x0, 0x1c, "f42a97b96d025891dd3f75fdda624457ad3d5c36389c308570204262"}}) program crashed: BUG: workqueue lockup a never seen crash title: BUG: workqueue lockup, ignore testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$unix-ioctl$sock_SIOCETHTOOL detailed listing: executing program 0: r0 = socket$unix(0x1, 0x5, 0x0) ioctl$sock_SIOCETHTOOL(r0, 0x89f0, &(0x7f0000000080)={'bridge0\x00', &(0x7f00000000c0)=@ethtool_regs={0x4, 0x0, 0x1c, "f42a97b96d025891dd3f75fdda624457ad3d5c36389c308570204262"}}) program did not crash testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$unix-ioctl$sock_SIOCETHTOOL detailed listing: executing program 0: r0 = socket$unix(0x1, 0x5, 0x0) ioctl$sock_SIOCETHTOOL(r0, 0x89f0, &(0x7f0000000080)={'bridge0\x00', &(0x7f00000000c0)=@ethtool_regs={0x4, 0x0, 0x1c, "f42a97b96d025891dd3f75fdda624457ad3d5c36389c308570204262"}}) program crashed: BUG: workqueue lockup validation run: crashed=true testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$unix-ioctl$sock_SIOCETHTOOL detailed listing: executing program 0: r0 = socket$unix(0x1, 0x5, 0x0) ioctl$sock_SIOCETHTOOL(r0, 0x89f0, &(0x7f0000000080)={'bridge0\x00', &(0x7f00000000c0)=@ethtool_regs={0x4, 0x0, 0x1c, "f42a97b96d025891dd3f75fdda624457ad3d5c36389c308570204262"}}) program crashed: BUG: workqueue lockup validation run: crashed=true testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$unix-ioctl$sock_SIOCETHTOOL detailed listing: executing program 0: r0 = socket$unix(0x1, 0x5, 0x0) ioctl$sock_SIOCETHTOOL(r0, 0x89f0, &(0x7f0000000080)={'bridge0\x00', &(0x7f00000000c0)=@ethtool_regs={0x4, 0x0, 0x1c, "f42a97b96d025891dd3f75fdda624457ad3d5c36389c308570204262"}}) program crashed: BUG: workqueue lockup validation run: crashed=true reproducing took 52m22.788704901s repro crashed as (corrupted=false): bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0) BUG: workqueue lockup - pool cpus=1 node=0 flags=0x0 nice=0 stuck for 31s! Showing busy workqueues and worker pools: workqueue events: flags=0x100 pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=11 refcnt=12 pending: psi_avgs_work, vmstat_shepherd, 4*ovs_dp_masks_rebalance, free_ipc, switchdev_deferred_process_work, psi_avgs_work, 2*nsim_dev_hwstats_traffic_work pwq 6: cpus=1 node=0 flags=0x0 nice=0 active=10 refcnt=11 pending: 4*ovs_dp_masks_rebalance, 2*nsim_dev_hwstats_traffic_work, 3*ovs_dp_masks_rebalance, drm_fb_helper_damage_work workqueue events_long: flags=0x100 pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=4 refcnt=5 pending: 4*defense_work_handler pwq 6: cpus=1 node=0 flags=0x0 nice=0 active=7 refcnt=8 in-flight: 24:defense_work_handler pending: 6*defense_work_handler workqueue events_unbound: flags=0x2 pwq 8: cpus=0-1 flags=0x6 nice=0 active=9 refcnt=10 in-flight: 6769:cfg80211_wiphy_work cfg80211_wiphy_work ,6785:cfg80211_wiphy_work cfg80211_wiphy_work ,41:cfg80211_wiphy_work cfg80211_wiphy_work ,213:cfg80211_wiphy_work cfg80211_wiphy_work pending: flush_memcg_stats_dwork pwq 8: cpus=0-1 flags=0x6 nice=0 active=2 refcnt=3 pending: crng_reseed, toggle_allocation_gate workqueue events_unbound: flags=0x2 pwq 8: cpus=0-1 flags=0x6 nice=0 active=5 refcnt=6 in-flight: 15:nsim_dev_trap_report_work ,42:linkwatch_event pending: macvlan_process_broadcast, 2*nsim_dev_trap_report_work pwq 8: cpus=0-1 flags=0x6 nice=0 active=2 refcnt=3 pending: macvlan_process_broadcast, nsim_dev_trap_report_work workqueue events_power_efficient: flags=0x182 pwq 8: cpus=0-1 flags=0x6 nice=0 active=4 refcnt=5 in-flight: 12:neigh_periodic_work ,6786:gc_worker pending: neigh_periodic_work, reg_check_chans_work pwq 8: cpus=0-1 flags=0x6 nice=0 active=4 refcnt=5 in-flight: 4724:neigh_managed_work pending: do_cache_clean, fb_flashcursor, wg_ratelimiter_gc_entries workqueue rcu_gp: flags=0x108 pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=1 refcnt=2 pending: process_srcu workqueue kvfree_rcu_reclaim: flags=0xa pwq 8: cpus=0-1 flags=0x6 nice=0 active=1 refcnt=3 MAYDAY pending: kfree_rcu_monitor workqueue netns: flags=0x6000a pwq 8: cpus=0-1 flags=0x6 nice=0 active=1 refcnt=4 in-flight: 646: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 writeback: flags=0x4a pwq 8: cpus=0-1 flags=0x6 nice=0 active=1 refcnt=2 in-flight: 6784:wb_workfn workqueue mld: flags=0x40108 pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=1 refcnt=59 pending: mld_dad_work inactive: mld_dad_work, mld_ifc_work, mld_dad_work, mld_ifc_work, mld_dad_work, 4*mld_ifc_work, 2*mld_dad_work, 6*mld_ifc_work, 3*mld_dad_work, mld_ifc_work, mld_dad_work, mld_ifc_work, mld_dad_work, 4*mld_ifc_work, 4*mld_dad_work, 2*mld_ifc_work, mld_dad_work, 5*mld_ifc_work, mld_dad_work, 16*mld_ifc_work workqueue ipv6_addrconf: flags=0x6000a pwq 8: cpus=0-1 flags=0x6 nice=0 active=1 refcnt=271 in-flight: 6783:addrconf_dad_work inactive: 267*addrconf_dad_work workqueue bat_events: flags=0x6000a pwq 8: cpus=0-1 flags=0x6 nice=0 active=1 refcnt=49 in-flight: 4308(RESCUER):batadv_tt_purge inactive: 3*batadv_tt_purge, 6*batadv_iv_send_outstanding_bat_ogm_packet, 6*batadv_mcast_mla_update, 3*batadv_iv_send_outstanding_bat_ogm_packet, batadv_dat_purge, batadv_bla_periodic_work, 4*batadv_iv_send_outstanding_bat_ogm_packet, 3*batadv_purge_orig, 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, batadv_dat_purge, batadv_bla_periodic_work, 3*batadv_purge_orig, 3*batadv_iv_send_outstanding_bat_ogm_packet, batadv_tt_purge workqueue wg-crypt-wg0: flags=0x128 pwq 6: cpus=1 node=0 flags=0x0 nice=0 active=2 refcnt=3 pending: wg_packet_encrypt_worker, wg_packet_tx_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=2 refcnt=3 pending: wg_packet_encrypt_worker, wg_packet_tx_worker workqueue wg-crypt-wg2: flags=0x128 pwq 6: cpus=1 node=0 flags=0x0 nice=0 active=2 refcnt=3 pending: wg_packet_encrypt_worker, wg_packet_tx_worker workqueue wg-kex-wg0: flags=0x124 pwq 6: cpus=1 node=0 flags=0x0 nice=0 active=1 refcnt=2 pending: wg_packet_handshake_receive_worker workqueue wg-crypt-wg0: flags=0x128 pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=1 refcnt=2 in-flight: 6788:wg_packet_tx_worker pwq 6: cpus=1 node=0 flags=0x0 nice=0 active=2 refcnt=3 pending: wg_packet_tx_worker, wg_packet_encrypt_worker workqueue wg-kex-wg1: flags=0x124 pwq 6: cpus=1 node=0 flags=0x0 nice=0 active=1 refcnt=2 pending: wg_packet_handshake_receive_worker workqueue wg-crypt-wg1: flags=0x128 pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=1 refcnt=2 pending: wg_packet_tx_worker pwq 6: cpus=1 node=0 flags=0x0 nice=0 active=3 refcnt=4 pending: wg_packet_encrypt_worker, wg_packet_decrypt_worker, wg_packet_tx_worker workqueue wg-kex-wg2: flags=0x124 pwq 6: cpus=1 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 workqueue wg-crypt-wg2: flags=0x128 pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=2 refcnt=3 pending: wg_packet_tx_worker, wg_packet_decrypt_worker pwq 6: cpus=1 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=0x124 pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=1 refcnt=2 in-flight: 9:wg_packet_handshake_receive_worker pwq 6: cpus=1 node=0 flags=0x0 nice=0 active=1 refcnt=2 pending: wg_packet_handshake_receive_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=2 refcnt=3 pending: wg_packet_encrypt_worker, wg_packet_tx_worker workqueue wg-kex-wg1: flags=0x124 pwq 6: cpus=1 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 in-flight: 4603: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=3 refcnt=4 pending: wg_packet_encrypt_worker, wg_packet_decrypt_worker, wg_packet_tx_worker workqueue wg-kex-wg2: flags=0x124 pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=2 refcnt=3 in-flight: 6545:wg_packet_handshake_receive_worker wg_packet_handshake_receive_worker pwq 6: cpus=1 node=0 flags=0x0 nice=0 active=1 refcnt=2 pending: wg_packet_handshake_receive_worker workqueue wg-crypt-wg2: flags=0x128 pwq 6: cpus=1 node=0 flags=0x0 nice=0 active=3 refcnt=4 pending: wg_packet_decrypt_worker, wg_packet_encrypt_worker, wg_packet_tx_worker pool 2: cpus=0 node=0 flags=0x0 nice=0 hung=0s workers=6 idle: 11 6677 6682 pool 6: cpus=1 node=0 flags=0x0 nice=0 hung=31s workers=7 idle: 1813 26 6771 6692 6776 6621 pool 8: cpus=0-1 flags=0x6 nice=0 hung=0s workers=14 manager: 6787 Showing backtraces of running workers in stalled CPU-bound worker pools: pool 6: task:kworker/1:0 state:R running task stack:0 pid:24 tgid:24 ppid:2 task_flags:0x4208060 flags:0x00000010 Workqueue: events_long defense_work_handler Call trace: __switch_to+0x418/0x87c arch/arm64/kernel/process.c:741 (T) context_switch kernel/sched/core.c:5325 [inline] __schedule+0x13b0/0x2864 kernel/sched/core.c:6929 preempt_schedule_common+0xe0/0x194 kernel/sched/core.c:7113 preempt_schedule+0x60/0x80 kernel/sched/core.c:7137 __local_bh_enable_ip+0x20c/0x35c kernel/softirq.c:457 local_bh_enable+0x28/0x34 include/linux/bottom_half.h:33 update_defense_level+0x5ec/0x984 net/netfilter/ipvs/ip_vs_ctl.c:210 defense_work_handler+0x30/0xdc net/netfilter/ipvs/ip_vs_ctl.c:235 process_one_work+0x7e8/0x155c kernel/workqueue.c:3263 process_scheduled_works kernel/workqueue.c:3346 [inline] worker_thread+0x958/0xed8 kernel/workqueue.c:3427 kthread+0x5fc/0x75c kernel/kthread.c:463 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:844 net_ratelimit: 139550 callbacks suppressed bridge0: received packet on veth0_to_bridge with own address as source address (addr:92:c7:25:4c:46:38, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0) bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0) bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0) net_ratelimit: 142197 callbacks suppressed bridge0: received packet on veth0_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:92:c7:25:4c:46:38, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0) bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0) final repro crashed as (corrupted=false): bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0) BUG: workqueue lockup - pool cpus=1 node=0 flags=0x0 nice=0 stuck for 31s! Showing busy workqueues and worker pools: workqueue events: flags=0x100 pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=11 refcnt=12 pending: psi_avgs_work, vmstat_shepherd, 4*ovs_dp_masks_rebalance, free_ipc, switchdev_deferred_process_work, psi_avgs_work, 2*nsim_dev_hwstats_traffic_work pwq 6: cpus=1 node=0 flags=0x0 nice=0 active=10 refcnt=11 pending: 4*ovs_dp_masks_rebalance, 2*nsim_dev_hwstats_traffic_work, 3*ovs_dp_masks_rebalance, drm_fb_helper_damage_work workqueue events_long: flags=0x100 pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=4 refcnt=5 pending: 4*defense_work_handler pwq 6: cpus=1 node=0 flags=0x0 nice=0 active=7 refcnt=8 in-flight: 24:defense_work_handler pending: 6*defense_work_handler workqueue events_unbound: flags=0x2 pwq 8: cpus=0-1 flags=0x6 nice=0 active=9 refcnt=10 in-flight: 6769:cfg80211_wiphy_work cfg80211_wiphy_work ,6785:cfg80211_wiphy_work cfg80211_wiphy_work ,41:cfg80211_wiphy_work cfg80211_wiphy_work ,213:cfg80211_wiphy_work cfg80211_wiphy_work pending: flush_memcg_stats_dwork pwq 8: cpus=0-1 flags=0x6 nice=0 active=2 refcnt=3 pending: crng_reseed, toggle_allocation_gate workqueue events_unbound: flags=0x2 pwq 8: cpus=0-1 flags=0x6 nice=0 active=5 refcnt=6 in-flight: 15:nsim_dev_trap_report_work ,42:linkwatch_event pending: macvlan_process_broadcast, 2*nsim_dev_trap_report_work pwq 8: cpus=0-1 flags=0x6 nice=0 active=2 refcnt=3 pending: macvlan_process_broadcast, nsim_dev_trap_report_work workqueue events_power_efficient: flags=0x182 pwq 8: cpus=0-1 flags=0x6 nice=0 active=4 refcnt=5 in-flight: 12:neigh_periodic_work ,6786:gc_worker pending: neigh_periodic_work, reg_check_chans_work pwq 8: cpus=0-1 flags=0x6 nice=0 active=4 refcnt=5 in-flight: 4724:neigh_managed_work pending: do_cache_clean, fb_flashcursor, wg_ratelimiter_gc_entries workqueue rcu_gp: flags=0x108 pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=1 refcnt=2 pending: process_srcu workqueue kvfree_rcu_reclaim: flags=0xa pwq 8: cpus=0-1 flags=0x6 nice=0 active=1 refcnt=3 MAYDAY pending: kfree_rcu_monitor workqueue netns: flags=0x6000a pwq 8: cpus=0-1 flags=0x6 nice=0 active=1 refcnt=4 in-flight: 646: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 writeback: flags=0x4a pwq 8: cpus=0-1 flags=0x6 nice=0 active=1 refcnt=2 in-flight: 6784:wb_workfn workqueue mld: flags=0x40108 pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=1 refcnt=59 pending: mld_dad_work inactive: mld_dad_work, mld_ifc_work, mld_dad_work, mld_ifc_work, mld_dad_work, 4*mld_ifc_work, 2*mld_dad_work, 6*mld_ifc_work, 3*mld_dad_work, mld_ifc_work, mld_dad_work, mld_ifc_work, mld_dad_work, 4*mld_ifc_work, 4*mld_dad_work, 2*mld_ifc_work, mld_dad_work, 5*mld_ifc_work, mld_dad_work, 16*mld_ifc_work workqueue ipv6_addrconf: flags=0x6000a pwq 8: cpus=0-1 flags=0x6 nice=0 active=1 refcnt=271 in-flight: 6783:addrconf_dad_work inactive: 267*addrconf_dad_work workqueue bat_events: flags=0x6000a pwq 8: cpus=0-1 flags=0x6 nice=0 active=1 refcnt=49 in-flight: 4308(RESCUER):batadv_tt_purge inactive: 3*batadv_tt_purge, 6*batadv_iv_send_outstanding_bat_ogm_packet, 6*batadv_mcast_mla_update, 3*batadv_iv_send_outstanding_bat_ogm_packet, batadv_dat_purge, batadv_bla_periodic_work, 4*batadv_iv_send_outstanding_bat_ogm_packet, 3*batadv_purge_orig, 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, batadv_dat_purge, batadv_bla_periodic_work, 3*batadv_purge_orig, 3*batadv_iv_send_outstanding_bat_ogm_packet, batadv_tt_purge workqueue wg-crypt-wg0: flags=0x128 pwq 6: cpus=1 node=0 flags=0x0 nice=0 active=2 refcnt=3 pending: wg_packet_encrypt_worker, wg_packet_tx_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=2 refcnt=3 pending: wg_packet_encrypt_worker, wg_packet_tx_worker workqueue wg-crypt-wg2: flags=0x128 pwq 6: cpus=1 node=0 flags=0x0 nice=0 active=2 refcnt=3 pending: wg_packet_encrypt_worker, wg_packet_tx_worker workqueue wg-kex-wg0: flags=0x124 pwq 6: cpus=1 node=0 flags=0x0 nice=0 active=1 refcnt=2 pending: wg_packet_handshake_receive_worker workqueue wg-crypt-wg0: flags=0x128 pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=1 refcnt=2 in-flight: 6788:wg_packet_tx_worker pwq 6: cpus=1 node=0 flags=0x0 nice=0 active=2 refcnt=3 pending: wg_packet_tx_worker, wg_packet_encrypt_worker workqueue wg-kex-wg1: flags=0x124 pwq 6: cpus=1 node=0 flags=0x0 nice=0 active=1 refcnt=2 pending: wg_packet_handshake_receive_worker workqueue wg-crypt-wg1: flags=0x128 pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=1 refcnt=2 pending: wg_packet_tx_worker pwq 6: cpus=1 node=0 flags=0x0 nice=0 active=3 refcnt=4 pending: wg_packet_encrypt_worker, wg_packet_decrypt_worker, wg_packet_tx_worker workqueue wg-kex-wg2: flags=0x124 pwq 6: cpus=1 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 workqueue wg-crypt-wg2: flags=0x128 pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=2 refcnt=3 pending: wg_packet_tx_worker, wg_packet_decrypt_worker pwq 6: cpus=1 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=0x124 pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=1 refcnt=2 in-flight: 9:wg_packet_handshake_receive_worker pwq 6: cpus=1 node=0 flags=0x0 nice=0 active=1 refcnt=2 pending: wg_packet_handshake_receive_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=2 refcnt=3 pending: wg_packet_encrypt_worker, wg_packet_tx_worker workqueue wg-kex-wg1: flags=0x124 pwq 6: cpus=1 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 in-flight: 4603: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=3 refcnt=4 pending: wg_packet_encrypt_worker, wg_packet_decrypt_worker, wg_packet_tx_worker workqueue wg-kex-wg2: flags=0x124 pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=2 refcnt=3 in-flight: 6545:wg_packet_handshake_receive_worker wg_packet_handshake_receive_worker pwq 6: cpus=1 node=0 flags=0x0 nice=0 active=1 refcnt=2 pending: wg_packet_handshake_receive_worker workqueue wg-crypt-wg2: flags=0x128 pwq 6: cpus=1 node=0 flags=0x0 nice=0 active=3 refcnt=4 pending: wg_packet_decrypt_worker, wg_packet_encrypt_worker, wg_packet_tx_worker pool 2: cpus=0 node=0 flags=0x0 nice=0 hung=0s workers=6 idle: 11 6677 6682 pool 6: cpus=1 node=0 flags=0x0 nice=0 hung=31s workers=7 idle: 1813 26 6771 6692 6776 6621 pool 8: cpus=0-1 flags=0x6 nice=0 hung=0s workers=14 manager: 6787 Showing backtraces of running workers in stalled CPU-bound worker pools: pool 6: task:kworker/1:0 state:R running task stack:0 pid:24 tgid:24 ppid:2 task_flags:0x4208060 flags:0x00000010 Workqueue: events_long defense_work_handler Call trace: __switch_to+0x418/0x87c arch/arm64/kernel/process.c:741 (T) context_switch kernel/sched/core.c:5325 [inline] __schedule+0x13b0/0x2864 kernel/sched/core.c:6929 preempt_schedule_common+0xe0/0x194 kernel/sched/core.c:7113 preempt_schedule+0x60/0x80 kernel/sched/core.c:7137 __local_bh_enable_ip+0x20c/0x35c kernel/softirq.c:457 local_bh_enable+0x28/0x34 include/linux/bottom_half.h:33 update_defense_level+0x5ec/0x984 net/netfilter/ipvs/ip_vs_ctl.c:210 defense_work_handler+0x30/0xdc net/netfilter/ipvs/ip_vs_ctl.c:235 process_one_work+0x7e8/0x155c kernel/workqueue.c:3263 process_scheduled_works kernel/workqueue.c:3346 [inline] worker_thread+0x958/0xed8 kernel/workqueue.c:3427 kthread+0x5fc/0x75c kernel/kthread.c:463 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:844 net_ratelimit: 139550 callbacks suppressed bridge0: received packet on veth0_to_bridge with own address as source address (addr:92:c7:25:4c:46:38, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0) bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0) bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0) net_ratelimit: 142197 callbacks suppressed bridge0: received packet on veth0_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:92:c7:25:4c:46:38, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0) bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)