Extracting prog: 4m48.253252069s Minimizing prog: 30m13.514513658s Simplifying prog options: 7m26.728224577s Extracting C: 1m12.277781857s Simplifying C: 0s extracting reproducer from 1 programs testing a last program of every proc single: executing 1 programs separately with timeout 30s testing program (duration=30s, {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$inet6-ioctl$sock_SIOCETHTOOL detailed listing: executing program 0: r0 = socket$inet6(0xa, 0x1, 0x0) ioctl$sock_SIOCETHTOOL(r0, 0x89f0, &(0x7f00000002c0)={'bridge0\x00', &(0x7f0000000340)=@ethtool_regs={0x4, 0x0, 0x1b, "aede62497cf56c9ab5bfd7b842f6b7ea6b8579d27d9c47d7da09f5"}}) program did not crash single: failed to extract reproducer 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$inet6-ioctl$sock_SIOCETHTOOL detailed listing: executing program 0: r0 = socket$inet6(0xa, 0x1, 0x0) ioctl$sock_SIOCETHTOOL(r0, 0x89f0, &(0x7f00000002c0)={'bridge0\x00', &(0x7f0000000340)=@ethtool_regs={0x4, 0x0, 0x1b, "aede62497cf56c9ab5bfd7b842f6b7ea6b8579d27d9c47d7da09f5"}}) program crashed: INFO: task hung in del_device_store 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$inet6 detailed listing: executing program 0: socket$inet6(0xa, 0x1, 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, &(0x7f00000002c0)={'bridge0\x00', &(0x7f0000000340)=@ethtool_regs={0x4, 0x0, 0x1b, "aede62497cf56c9ab5bfd7b842f6b7ea6b8579d27d9c47d7da09f5"}}) 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$inet6-ioctl$sock_SIOCETHTOOL detailed listing: executing program 0: r0 = socket$inet6(0xa, 0x1, 0x0) ioctl$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$inet6-ioctl$sock_SIOCETHTOOL detailed listing: executing program 0: r0 = socket$inet6(0xa, 0x1, 0x0) ioctl$sock_SIOCETHTOOL(r0, 0x89f0, &(0x7f00000002c0)={'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$inet6-ioctl$sock_SIOCETHTOOL detailed listing: executing program 0: r0 = socket$inet6(0xa, 0x1, 0x0) ioctl$sock_SIOCETHTOOL(r0, 0x89f0, &(0x7f00000002c0)={'bridge0\x00', &(0x7f0000000340)=@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$inet6-ioctl$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$inet6-ioctl$sock_SIOCETHTOOL detailed listing: executing program 0: r0 = socket$inet6(0xa, 0x1, 0x0) ioctl$sock_SIOCETHTOOL(r0, 0x89f0, &(0x7f00000002c0)={'bridge0\x00', &(0x7f0000000340)=@ethtool_regs={0x4, 0x0, 0x1b, "aede62497cf56c9ab5bfd7b842f6b7ea6b8579d27d9c47d7da09f5"}}) program crashed: unregister_netdevice: waiting for DEV to become free a never seen crash title: unregister_netdevice: waiting for DEV to become free, 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$inet6-ioctl$sock_SIOCETHTOOL detailed listing: executing program 0: r0 = socket$inet6(0xa, 0x1, 0x0) ioctl$sock_SIOCETHTOOL(r0, 0x89f0, &(0x7f00000002c0)={'bridge0\x00', &(0x7f0000000340)=@ethtool_regs={0x4, 0x0, 0x1b, "aede62497cf56c9ab5bfd7b842f6b7ea6b8579d27d9c47d7da09f5"}}) 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$inet6-ioctl$sock_SIOCETHTOOL detailed listing: executing program 0: r0 = socket$inet6(0xa, 0x1, 0x0) ioctl$sock_SIOCETHTOOL(r0, 0x89f0, &(0x7f00000002c0)={'bridge0\x00', &(0x7f0000000340)=@ethtool_regs={0x4, 0x0, 0x1b, "aede62497cf56c9ab5bfd7b842f6b7ea6b8579d27d9c47d7da09f5"}}) 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$inet6-ioctl$sock_SIOCETHTOOL detailed listing: executing program 0: r0 = socket$inet6(0xa, 0x1, 0x0) ioctl$sock_SIOCETHTOOL(r0, 0x89f0, &(0x7f00000002c0)={'bridge0\x00', &(0x7f0000000340)=@ethtool_regs={0x4, 0x0, 0x1b, "aede62497cf56c9ab5bfd7b842f6b7ea6b8579d27d9c47d7da09f5"}}) 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$inet6-ioctl$sock_SIOCETHTOOL detailed listing: executing program 0: r0 = socket$inet6(0xa, 0x1, 0x0) ioctl$sock_SIOCETHTOOL(r0, 0x89f0, &(0x7f00000002c0)={'bridge0\x00', &(0x7f0000000340)=@ethtool_regs={0x4, 0x0, 0x1b, "aede62497cf56c9ab5bfd7b842f6b7ea6b8579d27d9c47d7da09f5"}}) program crashed: BUG: workqueue lockup validation run: crashed=true reproducing took 49m39.983427252s repro crashed as (corrupted=false): bridge0: received packet on veth0_to_bridge 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 46s! Showing busy workqueues and worker pools: workqueue events: flags=0x100 pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=8 refcnt=9 in-flight: 5005:switchdev_deferred_process_work for 98s pending: 4*nsim_dev_hwstats_traffic_work, destroy_super_work, drm_fb_helper_damage_work, vmstat_shepherd pwq 6: cpus=1 node=0 flags=0x0 nice=0 active=7 refcnt=8 in-flight: 24:request_firmware_work_func for 147s pending: 3*ovs_dp_masks_rebalance, nsim_dev_hwstats_traffic_work, 2*psi_avgs_work workqueue events_long: flags=0x100 pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=2 refcnt=3 pending: 2*defense_work_handler pwq 6: cpus=1 node=0 flags=0x0 nice=0 active=4 refcnt=5 pending: 4*defense_work_handler workqueue events_unbound: flags=0x2 pwq 8: cpus=0-1 flags=0x6 nice=0 active=13 refcnt=14 in-flight: 54:toggle_allocation_gate for 0s ,5100:nsim_dev_trap_report_work for 4s ,40:cfg80211_wiphy_work for 80s cfg80211_wiphy_work ,5099:nsim_dev_trap_report_work for 7s ,1305:nsim_dev_trap_report_work for 11s ,1404:cfg80211_wiphy_work for 97s cfg80211_wiphy_work ,12:linkwatch_event for 98s linkwatch_event ,39:cfg80211_wiphy_work for 1s pending: nsim_dev_trap_report_work, flush_memcg_stats_dwork, nsim_dev_trap_report_work pwq 8: cpus=0-1 flags=0x6 nice=0 active=1 refcnt=2 workqueue events_power_efficient: flags=0x182 pwq 8: cpus=0-1 flags=0x6 nice=0 active=3 refcnt=4 in-flight: 1175:gc_worker for 2s pending: fb_flashcursor, wg_ratelimiter_gc_entries pwq 8: cpus=0-1 flags=0x6 nice=0 active=1 refcnt=2 in-flight: 15:reg_check_chans_work for 34s 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 writeback: flags=0x4a pwq 8: cpus=0-1 flags=0x6 nice=0 active=1 refcnt=2 in-flight: 5096:wb_workfn for 91s workqueue mld: flags=0x40108 pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=1 refcnt=49 in-flight: 5027:mld_ifc_work for 1s inactive: 2*mld_ifc_work, mld_dad_work, 4*mld_ifc_work, mld_dad_work, 13*mld_ifc_work, mld_dad_work, 9*mld_ifc_work, mld_dad_work, 7*mld_ifc_work, mld_dad_work, 7*mld_ifc_work pwq 6: cpus=1 node=0 flags=0x0 nice=0 active=1 refcnt=30 pending: mld_ifc_work inactive: 7*mld_ifc_work, mld_dad_work, mld_ifc_work, mld_dad_work, 18*mld_ifc_work workqueue ipv6_addrconf: flags=0x6000a pwq 8: cpus=0-1 flags=0x6 nice=0 active=1 refcnt=408 in-flight: 1345:addrconf_dad_work for 95s inactive: 403*addrconf_dad_work, addrconf_verify_work workqueue bat_events: flags=0x6000a pwq 8: cpus=0-1 flags=0x6 nice=0 active=1 refcnt=43 MAYDAY in-flight: 2858(RESCUER):batadv_tt_purge for 9s inactive: 3*batadv_tt_purge, 5*batadv_mcast_mla_update, 4*batadv_purge_orig, 13*batadv_iv_send_outstanding_bat_ogm_packet, batadv_purge_orig, batadv_iv_send_outstanding_bat_ogm_packet, batadv_tt_purge, batadv_bla_periodic_work, batadv_dat_purge, batadv_bla_periodic_work, 2*batadv_dat_purge, 2*batadv_bla_periodic_work, 2*batadv_dat_purge 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 pending: wg_packet_tx_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-wg1: flags=0x128 pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=1 refcnt=2 pending: wg_packet_decrypt_worker pwq 6: cpus=1 node=0 flags=0x0 nice=0 active=3 refcnt=4 pending: wg_packet_tx_worker, wg_packet_decrypt_worker, 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_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-wg2: flags=0x124 pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=1 refcnt=2 in-flight: 4839:wg_packet_handshake_receive_worker for 2s pwq 6: cpus=1 node=0 flags=0x0 nice=0 active=2 refcnt=3 in-flight: 867:wg_packet_handshake_receive_worker for 46s pending: wg_packet_handshake_receive_worker workqueue wg-crypt-wg2: 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_decrypt_worker, 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_tx_worker pwq 6: cpus=1 node=0 flags=0x0 nice=0 active=3 refcnt=4 pending: wg_packet_tx_worker, wg_packet_decrypt_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 in-flight: 11:wg_packet_handshake_receive_worker for 2s 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 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_decrypt_worker, wg_packet_encrypt_worker, wg_packet_tx_worker workqueue wg-crypt-wg0: flags=0x128 pwq 6: cpus=1 node=0 flags=0x0 nice=0 active=1 refcnt=2 pending: wg_packet_tx_worker workqueue wg-crypt-wg1: 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=1s workers=10 idle: 1022 5098 5097 4837 4991 9 pool 6: cpus=1 node=0 flags=0x0 nice=0 hung=46s workers=6 idle: 1095 4827 4816 26 pool 8: cpus=0-1 flags=0x6 nice=0 hung=0s workers=14 manager: 5101 idle: 1474 Showing backtraces of busy workers in stalled worker pools: pool 6: task:kworker/1:0 state:D stack:0 pid:24 tgid:24 ppid:2 task_flags:0x4208060 flags:0x00000010 Workqueue: events request_firmware_work_func Call trace: __switch_to+0x2b0/0x6e0 arch/arm64/kernel/process.c:810 (T) context_switch kernel/sched/core.c:5388 [inline] __schedule+0x1c04/0x2db8 kernel/sched/core.c:7189 __schedule_loop kernel/sched/core.c:7268 [inline] schedule+0x13c/0x20c kernel/sched/core.c:7283 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:7340 __mutex_lock_common kernel/locking/mutex.c:726 [inline] __mutex_lock+0x4fc/0xed0 kernel/locking/mutex.c:820 mutex_lock_nested+0x24/0x30 kernel/locking/mutex.c:873 rtnl_lock+0x20/0x2c net/core/rtnetlink.c:80 regdb_fw_cb+0x84/0x1a8 net/wireless/reg.c:1005 request_firmware_work_func+0xe8/0x19c drivers/base/firmware_loader/main.c:1152 process_one_work kernel/workqueue.c:3314 [inline] process_scheduled_works+0x788/0x10b8 kernel/workqueue.c:3397 worker_thread+0x798/0xbd0 kernel/workqueue.c:3478 kthread+0x304/0x3d4 kernel/kthread.c:436 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:842 pool 6: task:kworker/1:2 state:R running task stack:0 pid:867 tgid:867 ppid:2 task_flags:0x4208060 flags:0x00000010 Workqueue: wg-kex-wg2 wg_packet_handshake_receive_worker Call trace: __switch_to+0x2b0/0x6e0 arch/arm64/kernel/process.c:810 (T) context_switch kernel/sched/core.c:5388 [inline] __schedule+0x1c04/0x2db8 kernel/sched/core.c:7189 preempt_schedule_common+0xd4/0x190 kernel/sched/core.c:7370 preempt_schedule+0x60/0x78 kernel/sched/core.c:7394 __local_bh_enable_ip+0x20c/0x35c kernel/softirq.c:457 local_bh_enable include/linux/bottom_half.h:33 [inline] rcu_read_unlock_bh include/linux/rcupdate.h:912 [inline] mod_peer_timer+0x21c/0x25c drivers/net/wireguard/timers.c:38 wg_timers_any_authenticated_packet_traversal+0x98/0xc0 drivers/net/wireguard/timers.c:218 wg_packet_send_handshake_response+0x120/0x264 drivers/net/wireguard/send.c:99 wg_receive_handshake_packet drivers/net/wireguard/receive.c:154 [inline] wg_packet_handshake_receive_worker+0x570/0xcf8 drivers/net/wireguard/receive.c:213 process_one_work kernel/workqueue.c:3314 [inline] process_scheduled_works+0x788/0x10b8 kernel/workqueue.c:3397 worker_thread+0x798/0xbd0 kernel/workqueue.c:3478 kthread+0x304/0x3d4 kernel/kthread.c:436 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:842 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 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) net_ratelimit: 73608 callbacks suppressed 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 veth0_to_bridge 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 46s! Showing busy workqueues and worker pools: workqueue events: flags=0x100 pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=8 refcnt=9 in-flight: 5005:switchdev_deferred_process_work for 98s pending: 4*nsim_dev_hwstats_traffic_work, destroy_super_work, drm_fb_helper_damage_work, vmstat_shepherd pwq 6: cpus=1 node=0 flags=0x0 nice=0 active=7 refcnt=8 in-flight: 24:request_firmware_work_func for 147s pending: 3*ovs_dp_masks_rebalance, nsim_dev_hwstats_traffic_work, 2*psi_avgs_work workqueue events_long: flags=0x100 pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=2 refcnt=3 pending: 2*defense_work_handler pwq 6: cpus=1 node=0 flags=0x0 nice=0 active=4 refcnt=5 pending: 4*defense_work_handler workqueue events_unbound: flags=0x2 pwq 8: cpus=0-1 flags=0x6 nice=0 active=13 refcnt=14 in-flight: 54:toggle_allocation_gate for 0s ,5100:nsim_dev_trap_report_work for 4s ,40:cfg80211_wiphy_work for 80s cfg80211_wiphy_work ,5099:nsim_dev_trap_report_work for 7s ,1305:nsim_dev_trap_report_work for 11s ,1404:cfg80211_wiphy_work for 97s cfg80211_wiphy_work ,12:linkwatch_event for 98s linkwatch_event ,39:cfg80211_wiphy_work for 1s pending: nsim_dev_trap_report_work, flush_memcg_stats_dwork, nsim_dev_trap_report_work pwq 8: cpus=0-1 flags=0x6 nice=0 active=1 refcnt=2 workqueue events_power_efficient: flags=0x182 pwq 8: cpus=0-1 flags=0x6 nice=0 active=3 refcnt=4 in-flight: 1175:gc_worker for 2s pending: fb_flashcursor, wg_ratelimiter_gc_entries pwq 8: cpus=0-1 flags=0x6 nice=0 active=1 refcnt=2 in-flight: 15:reg_check_chans_work for 34s 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 writeback: flags=0x4a pwq 8: cpus=0-1 flags=0x6 nice=0 active=1 refcnt=2 in-flight: 5096:wb_workfn for 91s workqueue mld: flags=0x40108 pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=1 refcnt=49 in-flight: 5027:mld_ifc_work for 1s inactive: 2*mld_ifc_work, mld_dad_work, 4*mld_ifc_work, mld_dad_work, 13*mld_ifc_work, mld_dad_work, 9*mld_ifc_work, mld_dad_work, 7*mld_ifc_work, mld_dad_work, 7*mld_ifc_work pwq 6: cpus=1 node=0 flags=0x0 nice=0 active=1 refcnt=30 pending: mld_ifc_work inactive: 7*mld_ifc_work, mld_dad_work, mld_ifc_work, mld_dad_work, 18*mld_ifc_work workqueue ipv6_addrconf: flags=0x6000a pwq 8: cpus=0-1 flags=0x6 nice=0 active=1 refcnt=408 in-flight: 1345:addrconf_dad_work for 95s inactive: 403*addrconf_dad_work, addrconf_verify_work workqueue bat_events: flags=0x6000a pwq 8: cpus=0-1 flags=0x6 nice=0 active=1 refcnt=43 MAYDAY in-flight: 2858(RESCUER):batadv_tt_purge for 9s inactive: 3*batadv_tt_purge, 5*batadv_mcast_mla_update, 4*batadv_purge_orig, 13*batadv_iv_send_outstanding_bat_ogm_packet, batadv_purge_orig, batadv_iv_send_outstanding_bat_ogm_packet, batadv_tt_purge, batadv_bla_periodic_work, batadv_dat_purge, batadv_bla_periodic_work, 2*batadv_dat_purge, 2*batadv_bla_periodic_work, 2*batadv_dat_purge 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 pending: wg_packet_tx_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-wg1: flags=0x128 pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=1 refcnt=2 pending: wg_packet_decrypt_worker pwq 6: cpus=1 node=0 flags=0x0 nice=0 active=3 refcnt=4 pending: wg_packet_tx_worker, wg_packet_decrypt_worker, 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_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-wg2: flags=0x124 pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=1 refcnt=2 in-flight: 4839:wg_packet_handshake_receive_worker for 2s pwq 6: cpus=1 node=0 flags=0x0 nice=0 active=2 refcnt=3 in-flight: 867:wg_packet_handshake_receive_worker for 46s pending: wg_packet_handshake_receive_worker workqueue wg-crypt-wg2: 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_decrypt_worker, 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_tx_worker pwq 6: cpus=1 node=0 flags=0x0 nice=0 active=3 refcnt=4 pending: wg_packet_tx_worker, wg_packet_decrypt_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 in-flight: 11:wg_packet_handshake_receive_worker for 2s 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 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_decrypt_worker, wg_packet_encrypt_worker, wg_packet_tx_worker workqueue wg-crypt-wg0: flags=0x128 pwq 6: cpus=1 node=0 flags=0x0 nice=0 active=1 refcnt=2 pending: wg_packet_tx_worker workqueue wg-crypt-wg1: 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=1s workers=10 idle: 1022 5098 5097 4837 4991 9 pool 6: cpus=1 node=0 flags=0x0 nice=0 hung=46s workers=6 idle: 1095 4827 4816 26 pool 8: cpus=0-1 flags=0x6 nice=0 hung=0s workers=14 manager: 5101 idle: 1474 Showing backtraces of busy workers in stalled worker pools: pool 6: task:kworker/1:0 state:D stack:0 pid:24 tgid:24 ppid:2 task_flags:0x4208060 flags:0x00000010 Workqueue: events request_firmware_work_func Call trace: __switch_to+0x2b0/0x6e0 arch/arm64/kernel/process.c:810 (T) context_switch kernel/sched/core.c:5388 [inline] __schedule+0x1c04/0x2db8 kernel/sched/core.c:7189 __schedule_loop kernel/sched/core.c:7268 [inline] schedule+0x13c/0x20c kernel/sched/core.c:7283 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:7340 __mutex_lock_common kernel/locking/mutex.c:726 [inline] __mutex_lock+0x4fc/0xed0 kernel/locking/mutex.c:820 mutex_lock_nested+0x24/0x30 kernel/locking/mutex.c:873 rtnl_lock+0x20/0x2c net/core/rtnetlink.c:80 regdb_fw_cb+0x84/0x1a8 net/wireless/reg.c:1005 request_firmware_work_func+0xe8/0x19c drivers/base/firmware_loader/main.c:1152 process_one_work kernel/workqueue.c:3314 [inline] process_scheduled_works+0x788/0x10b8 kernel/workqueue.c:3397 worker_thread+0x798/0xbd0 kernel/workqueue.c:3478 kthread+0x304/0x3d4 kernel/kthread.c:436 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:842 pool 6: task:kworker/1:2 state:R running task stack:0 pid:867 tgid:867 ppid:2 task_flags:0x4208060 flags:0x00000010 Workqueue: wg-kex-wg2 wg_packet_handshake_receive_worker Call trace: __switch_to+0x2b0/0x6e0 arch/arm64/kernel/process.c:810 (T) context_switch kernel/sched/core.c:5388 [inline] __schedule+0x1c04/0x2db8 kernel/sched/core.c:7189 preempt_schedule_common+0xd4/0x190 kernel/sched/core.c:7370 preempt_schedule+0x60/0x78 kernel/sched/core.c:7394 __local_bh_enable_ip+0x20c/0x35c kernel/softirq.c:457 local_bh_enable include/linux/bottom_half.h:33 [inline] rcu_read_unlock_bh include/linux/rcupdate.h:912 [inline] mod_peer_timer+0x21c/0x25c drivers/net/wireguard/timers.c:38 wg_timers_any_authenticated_packet_traversal+0x98/0xc0 drivers/net/wireguard/timers.c:218 wg_packet_send_handshake_response+0x120/0x264 drivers/net/wireguard/send.c:99 wg_receive_handshake_packet drivers/net/wireguard/receive.c:154 [inline] wg_packet_handshake_receive_worker+0x570/0xcf8 drivers/net/wireguard/receive.c:213 process_one_work kernel/workqueue.c:3314 [inline] process_scheduled_works+0x788/0x10b8 kernel/workqueue.c:3397 worker_thread+0x798/0xbd0 kernel/workqueue.c:3478 kthread+0x304/0x3d4 kernel/kthread.c:436 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:842 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 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) net_ratelimit: 73608 callbacks suppressed bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)