Warning: Permanently added '10.128.1.33' (ED25519) to the list of known hosts. 2025/10/31 08:36:11 parsed 1 programs [ 74.098226][ T4189] cgroup: Unknown subsys name 'net' [ 74.233249][ T4189] cgroup: Unknown subsys name 'rlimit' [ 75.784395][ T4189] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k FS [ 79.176589][ T4242] chnl_net:caif_netlink_parms(): no params data found [ 79.232941][ T4242] bridge0: port 1(bridge_slave_0) entered blocking state [ 79.241402][ T4242] bridge0: port 1(bridge_slave_0) entered disabled state [ 79.249869][ T4242] device bridge_slave_0 entered promiscuous mode [ 79.259936][ T4242] bridge0: port 2(bridge_slave_1) entered blocking state [ 79.267235][ T4242] bridge0: port 2(bridge_slave_1) entered disabled state [ 79.275193][ T4242] device bridge_slave_1 entered promiscuous mode [ 79.301176][ T4242] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 79.313474][ T4242] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 79.343016][ T4242] team0: Port device team_slave_0 added [ 79.352985][ T4242] team0: Port device team_slave_1 added [ 79.380245][ T4242] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 79.387952][ T4242] batman_adv: batadv0: The MTU of interface batadv_slave_0 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. [ 79.417737][ T4242] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 79.432191][ T4242] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 79.440648][ T4242] batman_adv: batadv0: The MTU of interface batadv_slave_1 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. [ 79.469545][ T4242] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 79.505443][ T4242] device hsr_slave_0 entered promiscuous mode [ 79.513559][ T4242] device hsr_slave_1 entered promiscuous mode [ 79.770811][ T4242] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 79.785719][ T4242] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 79.796148][ T4242] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 79.808169][ T4242] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 79.836538][ T4242] bridge0: port 2(bridge_slave_1) entered blocking state [ 79.844605][ T4242] bridge0: port 2(bridge_slave_1) entered forwarding state [ 79.853733][ T4242] bridge0: port 1(bridge_slave_0) entered blocking state [ 79.862211][ T4242] bridge0: port 1(bridge_slave_0) entered forwarding state [ 79.909717][ T4242] 8021q: adding VLAN 0 to HW filter on device bond0 [ 79.924360][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 79.935826][ T9] bridge0: port 1(bridge_slave_0) entered disabled state [ 79.945780][ T9] bridge0: port 2(bridge_slave_1) entered disabled state [ 79.954628][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 79.968862][ T4242] 8021q: adding VLAN 0 to HW filter on device team0 [ 79.980981][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 79.990916][ T9] bridge0: port 1(bridge_slave_0) entered blocking state [ 79.998505][ T9] bridge0: port 1(bridge_slave_0) entered forwarding state [ 80.018234][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 80.028183][ T9] bridge0: port 2(bridge_slave_1) entered blocking state [ 80.035625][ T9] bridge0: port 2(bridge_slave_1) entered forwarding state [ 80.050256][ T378] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 80.079074][ T378] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 80.090401][ T378] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 80.103397][ T378] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 80.115194][ T378] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 80.272708][ T4270] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 80.281308][ T4270] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 80.294217][ T4242] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 80.329218][ T4270] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 80.338429][ T4270] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 80.359430][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 80.369432][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 80.378651][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 80.387682][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 80.398487][ T4242] device veth0_vlan entered promiscuous mode [ 80.431177][ T4242] device veth1_vlan entered promiscuous mode [ 80.477151][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 80.485950][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 80.495434][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 80.505832][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 80.533953][ T4242] device veth0_macvtap entered promiscuous mode [ 80.544279][ T4242] device veth1_macvtap entered promiscuous mode [ 80.562056][ T4242] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 80.571209][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 80.580183][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 80.589310][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 80.598919][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 80.612064][ T4242] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 80.623168][ T4270] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 80.634008][ T4270] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 80.646092][ T4242] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 80.657670][ T4242] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 80.667448][ T4242] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 80.677318][ T4242] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 81.034999][ T4270] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 81.057008][ T4270] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 81.077800][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 81.094346][ T144] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 81.104541][ T144] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 81.119091][ T4270] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2025/10/31 08:36:21 executed programs: 0 [ 82.401170][ T4298] chnl_net:caif_netlink_parms(): no params data found [ 82.470752][ T4298] bridge0: port 1(bridge_slave_0) entered blocking state [ 82.478929][ T4298] bridge0: port 1(bridge_slave_0) entered disabled state [ 82.488418][ T4298] device bridge_slave_0 entered promiscuous mode [ 82.497022][ T4298] bridge0: port 2(bridge_slave_1) entered blocking state [ 82.504606][ T4298] bridge0: port 2(bridge_slave_1) entered disabled state [ 82.513231][ T4298] device bridge_slave_1 entered promiscuous mode [ 82.550261][ T4298] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 82.562445][ T4298] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 82.588634][ T4298] team0: Port device team_slave_0 added [ 82.602051][ T4298] team0: Port device team_slave_1 added [ 82.634133][ T4298] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 82.642778][ T4298] batman_adv: batadv0: The MTU of interface batadv_slave_0 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. [ 82.669583][ T4298] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 82.684557][ T4298] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 82.692782][ T4298] batman_adv: batadv0: The MTU of interface batadv_slave_1 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. [ 82.726592][ T4298] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 82.753512][ T154] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 82.795057][ T4298] device hsr_slave_0 entered promiscuous mode [ 82.803263][ T4298] device hsr_slave_1 entered promiscuous mode [ 82.811651][ T4298] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 82.819994][ T4298] Cannot create hsr debugfs directory [ 84.297250][ T4269] Bluetooth: hci0: command 0x0409 tx timeout [ 85.983870][ T154] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 86.052883][ T154] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 86.103464][ T154] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 86.386570][ T4257] Bluetooth: hci0: command 0x041b tx timeout [ 87.014378][ T4298] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 87.025344][ T4298] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 87.063386][ T4298] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 87.073458][ T4298] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 87.180085][ T4298] 8021q: adding VLAN 0 to HW filter on device bond0 [ 87.197892][ T4270] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 87.209554][ T4270] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 87.221633][ T4298] 8021q: adding VLAN 0 to HW filter on device team0 [ 87.232673][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 87.242265][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 87.252777][ T9] bridge0: port 1(bridge_slave_0) entered blocking state [ 87.259907][ T9] bridge0: port 1(bridge_slave_0) entered forwarding state [ 87.280403][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 87.289737][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 87.298939][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 87.309700][ T9] bridge0: port 2(bridge_slave_1) entered blocking state [ 87.316924][ T9] bridge0: port 2(bridge_slave_1) entered forwarding state [ 87.325712][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 87.348818][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 87.358466][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 87.368604][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 87.379460][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 87.389346][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 87.398698][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 87.408176][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 87.420711][ T4298] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 87.432665][ T4298] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 87.506593][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 87.517838][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 87.529446][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 87.655230][ T378] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 87.663458][ T378] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 87.677812][ T4298] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 87.709610][ T378] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 87.718562][ T378] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 87.748484][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 87.758781][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 87.774189][ T4298] device veth0_vlan entered promiscuous mode [ 87.781323][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 87.792140][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 87.807518][ T154] device hsr_slave_0 left promiscuous mode [ 87.814336][ T154] device hsr_slave_1 left promiscuous mode [ 87.822758][ T154] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 87.830424][ T154] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 87.839440][ T154] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 87.848478][ T154] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 87.856967][ T154] device bridge_slave_1 left promiscuous mode [ 87.864036][ T154] bridge0: port 2(bridge_slave_1) entered disabled state [ 87.880254][ T154] device bridge_slave_0 left promiscuous mode [ 87.886997][ T154] bridge0: port 1(bridge_slave_0) entered disabled state [ 87.906765][ T154] device veth1_macvtap left promiscuous mode [ 87.913605][ T154] device veth0_macvtap left promiscuous mode [ 87.920224][ T154] device veth1_vlan left promiscuous mode [ 87.926213][ T154] device veth0_vlan left promiscuous mode [ 88.095353][ T154] team0 (unregistering): Port device team_slave_1 removed [ 88.111987][ T154] team0 (unregistering): Port device team_slave_0 removed [ 88.132093][ T154] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 88.151683][ T154] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 88.212764][ T154] bond0 (unregistering): Released all slaves [ 88.266201][ T4298] device veth1_vlan entered promiscuous mode [ 88.275067][ T4283] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 88.302458][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 88.318760][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 88.332100][ T4298] device veth0_macvtap entered promiscuous mode [ 88.345719][ T4298] device veth1_macvtap entered promiscuous mode [ 88.363784][ T4298] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 88.374001][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 88.383811][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 88.393137][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 88.405538][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 88.423190][ T4298] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 88.433858][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 88.443193][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 88.456895][ T4261] Bluetooth: hci0: command 0x040f tx timeout [ 88.463037][ T4298] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 88.473349][ T4298] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 88.483351][ T4298] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 88.494321][ T4298] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 88.559599][ T378] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 88.589723][ T378] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 88.595631][ T4283] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 88.600094][ T378] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 88.606073][ T4283] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 88.630704][ T378] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 88.670183][ T4224] [ 88.672572][ T4224] ===================================== [ 88.678316][ T4224] WARNING: bad unlock balance detected! [ 88.684064][ T4224] syzkaller #0 Not tainted [ 88.688839][ T4224] ------------------------------------- [ 88.694760][ T4224] kworker/u5:1/4224 is trying to release lock (&chan->lock) at: [ 88.702417][ T4224] [] l2cap_recv_frame+0xd09/0x7a10 [ 88.709352][ T4224] but there are no more locks to release! [ 88.715256][ T4224] [ 88.715256][ T4224] other info that might help us debug this: [ 88.724812][ T4224] 2 locks held by kworker/u5:1/4224: [ 88.730193][ T4224] #0: ffff888027634138 ((wq_completion)hci0#2){+.+.}-{0:0}, at: process_one_work+0x760/0x1000 [ 88.741372][ T4224] #1: ffffc90002f8fd00 ((work_completion)(&hdev->rx_work)){+.+.}-{0:0}, at: process_one_work+0x7a3/0x1000 [ 88.753613][ T4224] [ 88.753613][ T4224] stack backtrace: [ 88.759912][ T4224] CPU: 0 PID: 4224 Comm: kworker/u5:1 Not tainted syzkaller #0 [ 88.768083][ T4224] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025 [ 88.780089][ T4224] Workqueue: hci0 hci_rx_work [ 88.784832][ T4224] Call Trace: [ 88.788118][ T4224] [ 88.791054][ T4224] dump_stack_lvl+0x168/0x230 [ 88.795828][ T4224] ? show_regs_print_info+0x20/0x20 [ 88.801315][ T4224] ? l2cap_recv_frame+0xd09/0x7a10 [ 88.806715][ T4224] lock_release+0x52f/0x870 [ 88.811232][ T4224] ? l2cap_recv_frame+0xd09/0x7a10 [ 88.816490][ T4224] ? __lock_acquire+0x7c60/0x7c60 [ 88.821521][ T4224] ? lock_chain_count+0x20/0x20 [ 88.826639][ T4224] ? lockdep_hardirqs_on_prepare+0x760/0x760 [ 88.833008][ T4224] __mutex_unlock_slowpath+0xb3/0x6a0 [ 88.838897][ T4224] ? __local_bh_enable_ip+0x12a/0x1b0 [ 88.844379][ T4224] ? mutex_unlock+0x10/0x10 [ 88.848918][ T4224] ? l2cap_sock_recv_cb+0x18b/0x1e0 [ 88.854322][ T4224] ? l2cap_sock_recv_cb+0x18b/0x1e0 [ 88.859641][ T4224] l2cap_recv_frame+0xd09/0x7a10 [ 88.865418][ T4224] ? l2cap_recv_frag+0x290/0x290 [ 88.871143][ T4224] ? __mutex_unlock_slowpath+0x19e/0x6a0 [ 88.876891][ T4224] ? _raw_spin_unlock_irqrestore+0xaa/0x100 [ 88.882790][ T4224] ? mutex_unlock+0x10/0x10 [ 88.887313][ T4224] ? l2cap_recv_acldata+0x633/0x17c0 [ 88.892664][ T4224] hci_rx_work+0x4a4/0xa10 [ 88.897101][ T4224] process_one_work+0x863/0x1000 [ 88.902051][ T4224] ? worker_detach_from_pool+0x240/0x240 [ 88.907690][ T4224] ? lockdep_hardirqs_off+0x70/0x100 [ 88.912985][ T4224] ? _raw_spin_lock_irq+0xab/0xe0 [ 88.918200][ T4224] ? _raw_spin_lock_irqsave+0xf0/0xf0 [ 88.923855][ T4224] ? wq_worker_running+0x97/0x170 [ 88.928887][ T4224] worker_thread+0xaa8/0x12a0 [ 88.933581][ T4224] kthread+0x436/0x520 [ 88.937664][ T4224] ? rcu_lock_release+0x20/0x20 [ 88.942530][ T4224] ? kthread_blkcg+0xd0/0xd0 [ 88.947317][ T4224] ret_from_fork+0x1f/0x30 [ 88.951900][ T4224]