Warning: Permanently added '10.128.0.189' (ED25519) to the list of known hosts. 2026/04/26 02:35:58 parsed 1 programs [ 69.053694][ T4188] cgroup: Unknown subsys name 'net' [ 69.173780][ T4188] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size = 127995904 bytes [ 70.841232][ T4188] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k FS [ 71.611258][ T1422] ieee802154 phy0 wpan0: encryption failed: -22 [ 71.618737][ T1422] ieee802154 phy1 wpan1: encryption failed: -22 [ 74.073763][ T4237] chnl_net:caif_netlink_parms(): no params data found [ 74.142014][ T4237] bridge0: port 1(bridge_slave_0) entered blocking state [ 74.150136][ T4237] bridge0: port 1(bridge_slave_0) entered disabled state [ 74.158785][ T4237] device bridge_slave_0 entered promiscuous mode [ 74.169751][ T4237] bridge0: port 2(bridge_slave_1) entered blocking state [ 74.177436][ T4237] bridge0: port 2(bridge_slave_1) entered disabled state [ 74.185710][ T4237] device bridge_slave_1 entered promiscuous mode [ 74.212878][ T4237] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 74.224670][ T4237] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 74.252072][ T4237] team0: Port device team_slave_0 added [ 74.260069][ T4237] team0: Port device team_slave_1 added [ 74.287575][ T4237] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 74.294768][ T4237] 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. [ 74.322943][ T4237] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 74.336551][ T4237] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 74.345038][ T4237] 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. [ 74.375236][ T4237] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 74.415144][ T4237] device hsr_slave_0 entered promiscuous mode [ 74.422756][ T4237] device hsr_slave_1 entered promiscuous mode [ 74.568361][ T4237] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 74.580930][ T4237] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 74.594709][ T4237] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 74.607098][ T4237] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 74.664683][ T4237] bridge0: port 2(bridge_slave_1) entered blocking state [ 74.676027][ T4237] bridge0: port 2(bridge_slave_1) entered forwarding state [ 74.684537][ T4237] bridge0: port 1(bridge_slave_0) entered blocking state [ 74.691765][ T4237] bridge0: port 1(bridge_slave_0) entered forwarding state [ 74.768250][ T4237] 8021q: adding VLAN 0 to HW filter on device bond0 [ 74.792863][ T4237] 8021q: adding VLAN 0 to HW filter on device team0 [ 74.807951][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 74.825722][ T155] bridge0: port 1(bridge_slave_0) entered disabled state [ 74.840374][ T155] bridge0: port 2(bridge_slave_1) entered disabled state [ 74.888771][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 74.898997][ T155] bridge0: port 1(bridge_slave_0) entered blocking state [ 74.906239][ T155] bridge0: port 1(bridge_slave_0) entered forwarding state [ 74.922551][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 74.931180][ T155] bridge0: port 2(bridge_slave_1) entered blocking state [ 74.939358][ T155] bridge0: port 2(bridge_slave_1) entered forwarding state [ 74.963175][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 74.972742][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 74.982555][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 74.997879][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 75.008624][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 75.024433][ T4237] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 75.036092][ T4237] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 75.049421][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 75.058977][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 75.069082][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 75.078260][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 75.086563][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 75.195240][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 75.203911][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 75.218121][ T4237] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 75.255372][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 75.265171][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 75.283557][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 75.292588][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 75.301908][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 75.310437][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 75.320598][ T4237] device veth0_vlan entered promiscuous mode [ 75.354634][ T4237] device veth1_vlan entered promiscuous mode [ 75.377939][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 75.386519][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 75.396060][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 75.405043][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 75.436430][ T4237] device veth0_macvtap entered promiscuous mode [ 75.447504][ T4237] device veth1_macvtap entered promiscuous mode [ 75.463544][ T4237] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 75.471546][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 75.483620][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 75.493269][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 75.503739][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 75.517984][ T4237] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 75.548940][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 75.558494][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 75.569848][ T4237] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 75.579692][ T4237] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 75.589030][ T4237] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 75.599475][ T4237] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 76.191205][ T9] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 76.207234][ T9] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 76.255592][ T3055] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 76.273840][ T9] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 76.283271][ T9] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 76.292410][ T3055] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2026/04/26 02:36:08 executed programs: 0 [ 77.266635][ T4287] chnl_net:caif_netlink_parms(): no params data found [ 77.336516][ T4287] bridge0: port 1(bridge_slave_0) entered blocking state [ 77.344211][ T4287] bridge0: port 1(bridge_slave_0) entered disabled state [ 77.353126][ T4287] device bridge_slave_0 entered promiscuous mode [ 77.362247][ T4287] bridge0: port 2(bridge_slave_1) entered blocking state [ 77.370884][ T4287] bridge0: port 2(bridge_slave_1) entered disabled state [ 77.381310][ T4287] device bridge_slave_1 entered promiscuous mode [ 77.406106][ T4287] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 77.421777][ T4287] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 77.452287][ T4287] team0: Port device team_slave_0 added [ 77.462379][ T4287] team0: Port device team_slave_1 added [ 77.485787][ T4287] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 77.493142][ T4287] 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. [ 77.519962][ T4287] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 77.532921][ T4287] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 77.541174][ T4287] 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. [ 77.568248][ T4287] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 77.612574][ T4287] device hsr_slave_0 entered promiscuous mode [ 77.619903][ T4287] device hsr_slave_1 entered promiscuous mode [ 77.627543][ T4287] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 77.635576][ T4287] Cannot create hsr debugfs directory [ 77.729050][ T4287] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 79.207975][ T1108] Bluetooth: hci0: command 0x0409 tx timeout [ 80.816073][ T4287] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 80.893023][ T4287] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 80.970463][ T4287] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 81.096988][ T4287] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 81.108673][ T4287] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 81.135334][ T4287] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 81.151840][ T4287] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 81.234860][ T4287] 8021q: adding VLAN 0 to HW filter on device bond0 [ 81.269150][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 81.278357][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 81.288638][ T4287] 8021q: adding VLAN 0 to HW filter on device team0 [ 81.296109][ T4256] Bluetooth: hci0: command 0x041b tx timeout [ 81.306027][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 81.314958][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 81.326622][ T9] bridge0: port 1(bridge_slave_0) entered blocking state [ 81.334118][ T9] bridge0: port 1(bridge_slave_0) entered forwarding state [ 81.343168][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 81.354420][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 81.363692][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 81.374067][ T9] bridge0: port 2(bridge_slave_1) entered blocking state [ 81.383073][ T9] bridge0: port 2(bridge_slave_1) entered forwarding state [ 81.399813][ T3055] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 81.432014][ T3055] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 81.443983][ T3055] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 81.455203][ T3055] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 81.465438][ T3055] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 81.489927][ T3055] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 81.498980][ T3055] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 81.512475][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 81.523086][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 81.561229][ T3055] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 81.572413][ T3055] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 81.585519][ T4287] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 81.727080][ T144] device hsr_slave_0 left promiscuous mode [ 81.734072][ T144] device hsr_slave_1 left promiscuous mode [ 81.741597][ T144] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 81.750085][ T144] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 81.759523][ T144] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 81.767226][ T144] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 81.774958][ T144] device bridge_slave_1 left promiscuous mode [ 81.782208][ T144] bridge0: port 2(bridge_slave_1) entered disabled state [ 81.796131][ T144] device bridge_slave_0 left promiscuous mode [ 81.805003][ T144] bridge0: port 1(bridge_slave_0) entered disabled state [ 81.829327][ T144] device veth1_macvtap left promiscuous mode [ 81.836605][ T144] device veth0_macvtap left promiscuous mode [ 81.843958][ T144] device veth1_vlan left promiscuous mode [ 81.851081][ T144] device veth0_vlan left promiscuous mode [ 82.032505][ T144] team0 (unregistering): Port device team_slave_1 removed [ 82.046365][ T144] team0 (unregistering): Port device team_slave_0 removed [ 82.063480][ T144] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 82.081561][ T144] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 82.142607][ T144] bond0 (unregistering): Released all slaves [ 82.228081][ T3055] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 82.236584][ T3055] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 82.249842][ T4287] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 82.271214][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 82.281059][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 82.303307][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 82.319359][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 82.334468][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 82.347701][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 82.357957][ T4287] device veth0_vlan entered promiscuous mode [ 82.369771][ T4287] device veth1_vlan entered promiscuous mode [ 82.395362][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 82.404616][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 82.413497][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 82.427894][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 82.440564][ T4287] device veth0_macvtap entered promiscuous mode [ 82.450713][ T4287] device veth1_macvtap entered promiscuous mode [ 82.469247][ T4287] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 82.478909][ T3055] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 82.487933][ T3055] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 82.496172][ T3055] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 82.508815][ T3055] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 82.520724][ T4287] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 82.530794][ T3055] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 82.540441][ T3055] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 82.552000][ T4287] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 82.561174][ T4287] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 82.573668][ T4287] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 82.584363][ T4287] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 82.653067][ T9] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 82.663200][ T9] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 82.673653][ T3055] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 82.714188][ T9] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 82.723369][ T9] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 82.735533][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 82.875521][ T4300] [ 82.878055][ T4300] ====================================================== [ 82.885831][ T4300] WARNING: possible circular locking dependency detected [ 82.893003][ T4300] syzkaller #0 Not tainted [ 82.897473][ T4300] ------------------------------------------------------ [ 82.905412][ T4300] syz.0.17/4300 is trying to acquire lock: [ 82.911396][ T4300] ffff888027720c28 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}, at: __flush_work+0xfa/0x210 [ 82.923325][ T4300] [ 82.923325][ T4300] but task is already holding lock: [ 82.930730][ T4300] ffffffff8d6c5de8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x18b/0x560 [ 82.940978][ T4300] [ 82.940978][ T4300] which lock already depends on the new lock. [ 82.940978][ T4300] [ 82.951706][ T4300] [ 82.951706][ T4300] the existing dependency chain (in reverse order) is: [ 82.961512][ T4300] [ 82.961512][ T4300] -> #4 (rfkill_global_mutex){+.+.}-{3:3}: [ 82.970200][ T4300] __mutex_lock_common+0x1e3/0x2400 [ 82.976232][ T4300] mutex_lock_nested+0x17/0x20 [ 82.981917][ T4300] rfkill_register+0x33/0x980 [ 82.987510][ T4300] hci_register_dev+0x452/0x970 [ 82.993419][ T4300] vhci_create_device+0x32c/0x5c0 [ 82.999224][ T4300] vhci_write+0x391/0x450 [ 83.004211][ T4300] vfs_write+0x745/0xd60 [ 83.009524][ T4300] ksys_write+0x152/0x260 [ 83.014417][ T4300] do_syscall_64+0x4c/0xa0 [ 83.019868][ T4300] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 83.026727][ T4300] [ 83.026727][ T4300] -> #3 (&data->open_mutex){+.+.}-{3:3}: [ 83.035289][ T4300] __mutex_lock_common+0x1e3/0x2400 [ 83.041610][ T4300] mutex_lock_nested+0x17/0x20 [ 83.047492][ T4300] vhci_send_frame+0x88/0x100 [ 83.053028][ T4300] hci_send_frame+0x1a9/0x2e0 [ 83.058799][ T4300] hci_tx_work+0x9f9/0x1710 [ 83.064079][ T4300] process_one_work+0x85f/0x1010 [ 83.069680][ T4300] worker_thread+0xaa6/0x1290 [ 83.074930][ T4300] kthread+0x436/0x520 [ 83.079558][ T4300] ret_from_fork+0x1f/0x30 [ 83.084532][ T4300] [ 83.084532][ T4300] -> #2 ((work_completion)(&hdev->tx_work)){+.+.}-{0:0}: [ 83.094041][ T4300] __flush_work+0x116/0x210 [ 83.099671][ T4300] hci_dev_do_close+0x1e7/0x1030 [ 83.105824][ T4300] hci_unregister_dev+0x2d7/0x580 [ 83.111655][ T4300] vhci_release+0x73/0xc0 [ 83.116586][ T4300] __fput+0x234/0x930 [ 83.121351][ T4300] task_work_run+0x125/0x1a0 [ 83.126626][ T4300] do_exit+0x626/0x20c0 [ 83.131515][ T4300] do_group_exit+0x12e/0x300 [ 83.136679][ T4300] get_signal+0x6ca/0x12c0 [ 83.141671][ T4300] arch_do_signal_or_restart+0xe7/0x12c0 [ 83.148939][ T4300] exit_to_user_mode_loop+0x9e/0x130 [ 83.155460][ T4300] exit_to_user_mode_prepare+0xee/0x180 [ 83.162064][ T4300] syscall_exit_to_user_mode+0x16/0x40 [ 83.168782][ T4300] do_syscall_64+0x58/0xa0 [ 83.173884][ T4300] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 83.180597][ T4300] [ 83.180597][ T4300] -> #1 (&hdev->req_lock){+.+.}-{3:3}: [ 83.188293][ T4300] __mutex_lock_common+0x1e3/0x2400 [ 83.194052][ T4300] mutex_lock_nested+0x17/0x20 [ 83.200033][ T4300] bg_scan_update+0x44/0x3b0 [ 83.205324][ T4300] process_one_work+0x85f/0x1010 [ 83.210989][ T4300] worker_thread+0xaa6/0x1290 [ 83.216927][ T4300] kthread+0x436/0x520 [ 83.222604][ T4300] ret_from_fork+0x1f/0x30 [ 83.227904][ T4300] [ 83.227904][ T4300] -> #0 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}: [ 83.238142][ T4300] __lock_acquire+0x2c42/0x7d10 [ 83.243805][ T4300] lock_acquire+0x19e/0x400 [ 83.248881][ T4300] __flush_work+0x116/0x210 [ 83.253964][ T4300] __cancel_work_timer+0x3f4/0x560 [ 83.259954][ T4300] hci_request_cancel_all+0xcc/0x300 [ 83.265895][ T4300] hci_dev_do_close+0x4e/0x1030 [ 83.271993][ T4300] hci_rfkill_set_block+0x10a/0x190 [ 83.277939][ T4300] rfkill_set_block+0x1c9/0x3d0 [ 83.283872][ T4300] rfkill_fop_write+0x452/0x560 [ 83.289818][ T4300] vfs_write+0x30b/0xd60 [ 83.294639][ T4300] ksys_write+0x152/0x260 [ 83.299640][ T4300] do_syscall_64+0x4c/0xa0 [ 83.304627][ T4300] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 83.311171][ T4300] [ 83.311171][ T4300] other info that might help us debug this: [ 83.311171][ T4300] [ 83.321755][ T4300] Chain exists of: [ 83.321755][ T4300] (work_completion)(&hdev->bg_scan_update) --> &data->open_mutex --> rfkill_global_mutex [ 83.321755][ T4300] [ 83.339266][ T4300] Possible unsafe locking scenario: [ 83.339266][ T4300] [ 83.346780][ T4300] CPU0 CPU1 [ 83.352240][ T4300] ---- ---- [ 83.357641][ T4300] lock(rfkill_global_mutex); [ 83.362450][ T4300] lock(&data->open_mutex); [ 83.369614][ T4300] lock(rfkill_global_mutex); [ 83.376974][ T4300] lock((work_completion)(&hdev->bg_scan_update)); [ 83.384468][ T4300] [ 83.384468][ T4300] *** DEADLOCK *** [ 83.384468][ T4300] [ 83.393286][ T4300] 1 lock held by syz.0.17/4300: [ 83.398173][ T4300] #0: ffffffff8d6c5de8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x18b/0x560 [ 83.409604][ T4300] [ 83.409604][ T4300] stack backtrace: [ 83.415886][ T4300] CPU: 1 PID: 4300 Comm: syz.0.17 Not tainted syzkaller #0 [ 83.423244][ T4300] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 83.433353][ T4300] Call Trace: [ 83.436813][ T4300] [ 83.439802][ T4300] dump_stack_lvl+0x188/0x250 [ 83.444628][ T4300] ? load_image+0x400/0x400 [ 83.449279][ T4300] ? show_regs_print_info+0x20/0x20 [ 83.454537][ T4300] ? print_circular_bug+0x12b/0x1a0 [ 83.459930][ T4300] check_noncircular+0x296/0x330 [ 83.465295][ T4300] ? look_up_lock_class+0x71/0x110 [ 83.470547][ T4300] ? add_chain_block+0x940/0x940 [ 83.475547][ T4300] ? lockdep_lock+0xf1/0x1f0 [ 83.480176][ T4300] ? __lock_acquire+0x12e8/0x7d10 [ 83.485286][ T4300] ? mark_lock+0x94/0x320 [ 83.489739][ T4300] __lock_acquire+0x2c42/0x7d10 [ 83.494661][ T4300] ? verify_lock_unused+0x140/0x140 [ 83.500059][ T4300] ? verify_lock_unused+0x140/0x140 [ 83.506007][ T4300] ? mark_lock+0x94/0x320 [ 83.510653][ T4300] lock_acquire+0x19e/0x400 [ 83.515984][ T4300] ? __flush_work+0xfa/0x210 [ 83.520616][ T4300] ? __lock_acquire+0x7d10/0x7d10 [ 83.526838][ T4300] ? read_lock_is_recursive+0x10/0x10 [ 83.532588][ T4300] ? start_flush_work+0x776/0x820 [ 83.538086][ T4300] __flush_work+0x116/0x210 [ 83.543508][ T4300] ? __flush_work+0xfa/0x210 [ 83.549169][ T4300] ? flush_work+0x20/0x20 [ 83.553635][ T4300] ? try_to_grab_pending+0xfa/0x7f0 [ 83.559316][ T4300] ? mark_lock+0x94/0x320 [ 83.564036][ T4300] ? lockdep_hardirqs_on_prepare+0x409/0x770 [ 83.570091][ T4300] ? lock_chain_count+0x20/0x20 [ 83.575095][ T4300] ? mark_lock+0x94/0x320 [ 83.579460][ T4300] ? __cancel_work_timer+0x36a/0x560 [ 83.584798][ T4300] __cancel_work_timer+0x3f4/0x560 [ 83.590052][ T4300] ? cancel_work_sync+0x20/0x20 [ 83.594948][ T4300] ? __cancel_work+0x1f9/0x2e0 [ 83.600130][ T4300] ? lockdep_hardirqs_on+0x94/0x140 [ 83.605404][ T4300] ? __cancel_work+0x27b/0x2e0 [ 83.610394][ T4300] ? cancel_work+0x20/0x20 [ 83.614993][ T4300] ? lock_chain_count+0x20/0x20 [ 83.620209][ T4300] hci_request_cancel_all+0xcc/0x300 [ 83.625943][ T4300] hci_dev_do_close+0x4e/0x1030 [ 83.631377][ T4300] ? _raw_spin_unlock_irqrestore+0xc1/0x120 [ 83.637546][ T4300] ? _raw_spin_unlock+0x40/0x40 [ 83.642955][ T4300] hci_rfkill_set_block+0x10a/0x190 [ 83.648410][ T4300] ? rcu_lock_release+0x20/0x20 [ 83.653544][ T4300] rfkill_set_block+0x1c9/0x3d0 [ 83.658910][ T4300] rfkill_fop_write+0x452/0x560 [ 83.664153][ T4300] ? rfkill_fop_read+0x520/0x520 [ 83.669324][ T4300] ? common_file_perm+0x140/0x1c0 [ 83.674391][ T4300] ? fsnotify_perm+0x5d/0x560 [ 83.679398][ T4300] ? security_file_permission+0x75/0xa0 [ 83.684998][ T4300] ? rfkill_fop_read+0x520/0x520 [ 83.690211][ T4300] vfs_write+0x30b/0xd60 [ 83.694646][ T4300] ? file_end_write+0x250/0x250 [ 83.699934][ T4300] ? __context_tracking_exit+0x4c/0x80 [ 83.705550][ T4300] ? __lock_acquire+0x7d10/0x7d10 [ 83.710627][ T4300] ? __fdget_pos+0x1e2/0x370 [ 83.715446][ T4300] ksys_write+0x152/0x260 [ 83.719995][ T4300] ? __ia32_sys_read+0x80/0x80 [ 83.724809][ T4300] ? lockdep_hardirqs_on+0x94/0x140 [ 83.730539][ T4300] do_syscall_64+0x4c/0xa0 [ 83.736179][ T4300] ? clear_bhb_loop+0x30/0x80 [ 83.741237][ T4300] ? clear_bhb_loop+0x30/0x80 [ 83.746053][ T4300] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 83.751997][ T4300] RIP: 0033:0x7fa5e9fcddd9 [ 83.757167][ T4300] Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48 [ 83.777990][ T4300] RSP: 002b:00007ffc52ba3038 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 83.786601][ T4300] RAX: ffffffffffffffda RBX: 00007fa5ea246fa0 RCX: 00007fa5e9fcddd9 [ 83.794938][ T4300] RDX: 0000000000000008 RSI: 0000200000000100 RDI: 0000000000000003 [ 83.803696][ T4300] RBP: 00007fa5ea063d69 R08: 0000000000000000 R09: 0000000000000000 [ 83.812175][ T4300] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 83.820740][ T4300] R13: 00007fa5ea246fac R14: 00007fa5ea246fa0 R15: 00007fa5ea246fa0 [ 83.829120][ T4300] [ 83.843113][ T4256] Bluetooth: hci0: command 0x040f tx timeout