Warning: Permanently added '10.128.1.27' (ED25519) to the list of known hosts. 2026/04/30 07:50:52 parsed 1 programs [ 52.343905][ T4187] cgroup: Unknown subsys name 'net' [ 52.486872][ T4187] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size = 127995904 bytes [ 53.734010][ T4187] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k FS [ 56.185208][ T9] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 56.201738][ T9] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 56.211966][ T1153] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 56.236532][ T1153] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 56.244721][ T1153] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 56.253594][ T4237] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 56.866935][ T144] ODEBUG: Out of memory. ODEBUG disabled [ 57.183064][ T4270] chnl_net:caif_netlink_parms(): no params data found [ 57.219544][ T4270] bridge0: port 1(bridge_slave_0) entered blocking state [ 57.227362][ T4270] bridge0: port 1(bridge_slave_0) entered disabled state [ 57.235886][ T4270] device bridge_slave_0 entered promiscuous mode [ 57.245142][ T4270] bridge0: port 2(bridge_slave_1) entered blocking state [ 57.252271][ T4270] bridge0: port 2(bridge_slave_1) entered disabled state [ 57.259880][ T4270] device bridge_slave_1 entered promiscuous mode [ 57.277383][ T4270] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 57.288585][ T4270] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 57.307637][ T4270] team0: Port device team_slave_0 added [ 57.314724][ T4270] team0: Port device team_slave_1 added [ 57.329284][ T4270] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 57.336287][ T4270] 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. [ 57.362565][ T4270] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 57.374464][ T4270] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 57.381415][ T4270] 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. [ 57.407437][ T4270] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 57.432897][ T4270] device hsr_slave_0 entered promiscuous mode [ 57.439803][ T4270] device hsr_slave_1 entered promiscuous mode [ 57.510753][ T4270] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 57.521439][ T4270] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 57.530305][ T4270] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 57.538988][ T4270] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 57.557689][ T4270] bridge0: port 2(bridge_slave_1) entered blocking state [ 57.564876][ T4270] bridge0: port 2(bridge_slave_1) entered forwarding state [ 57.572566][ T4270] bridge0: port 1(bridge_slave_0) entered blocking state [ 57.579606][ T4270] bridge0: port 1(bridge_slave_0) entered forwarding state [ 57.615714][ T4270] 8021q: adding VLAN 0 to HW filter on device bond0 [ 57.627979][ T1153] bridge0: port 1(bridge_slave_0) entered disabled state [ 57.635933][ T1153] bridge0: port 2(bridge_slave_1) entered disabled state [ 57.644551][ T1153] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 57.653896][ T1153] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 57.662571][ T1153] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 57.673062][ T4270] 8021q: adding VLAN 0 to HW filter on device team0 [ 57.697916][ T1153] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 57.707463][ T1153] bridge0: port 1(bridge_slave_0) entered blocking state [ 57.714607][ T1153] bridge0: port 1(bridge_slave_0) entered forwarding state [ 57.728498][ T1153] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 57.738067][ T1153] bridge0: port 2(bridge_slave_1) entered blocking state [ 57.745167][ T1153] bridge0: port 2(bridge_slave_1) entered forwarding state [ 57.764417][ T1153] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 57.773829][ T1153] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 57.782708][ T1153] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 57.794663][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 57.806943][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 57.835071][ T4270] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 57.917355][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 57.925259][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 57.938599][ T4270] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 57.970705][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 57.986556][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 57.995774][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 58.003695][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 58.013775][ T4270] device veth0_vlan entered promiscuous mode [ 58.025390][ T4270] device veth1_vlan entered promiscuous mode [ 58.056982][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 58.065202][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 58.074636][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 58.084972][ T4270] device veth0_macvtap entered promiscuous mode [ 58.109632][ T4270] device veth1_macvtap entered promiscuous mode [ 58.124683][ T4270] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 58.132386][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 58.141296][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 58.153951][ T4270] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 58.163145][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 58.175055][ T4270] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 58.184074][ T4270] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 58.193494][ T4270] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 58.202294][ T4270] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 2026/04/30 07:50:59 executed programs: 0 [ 58.807198][ T4296] chnl_net:caif_netlink_parms(): no params data found [ 58.864600][ T4296] bridge0: port 1(bridge_slave_0) entered blocking state [ 58.871807][ T4296] bridge0: port 1(bridge_slave_0) entered disabled state [ 58.879941][ T4296] device bridge_slave_0 entered promiscuous mode [ 58.890813][ T4296] bridge0: port 2(bridge_slave_1) entered blocking state [ 58.898287][ T4296] bridge0: port 2(bridge_slave_1) entered disabled state [ 58.908727][ T4296] device bridge_slave_1 entered promiscuous mode [ 58.935371][ T4296] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 58.946763][ T4296] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 58.974413][ T4296] team0: Port device team_slave_0 added [ 58.982297][ T4296] team0: Port device team_slave_1 added [ 59.004485][ T4296] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 59.011517][ T4296] 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. [ 59.038434][ T4296] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 59.050875][ T4296] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 59.058703][ T4296] 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. [ 59.085597][ T4296] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 59.119735][ T4296] device hsr_slave_0 entered promiscuous mode [ 59.126587][ T4296] device hsr_slave_1 entered promiscuous mode [ 59.134809][ T4296] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 59.143001][ T4296] Cannot create hsr debugfs directory [ 59.224150][ T4296] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 60.742287][ T4275] Bluetooth: hci0: command 0x0409 tx timeout [ 61.576519][ T4296] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 62.831749][ T4189] Bluetooth: hci0: command 0x041b tx timeout [ 63.183991][ T4296] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 63.265232][ T4296] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 63.380836][ T4296] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 63.390136][ T4296] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 63.399170][ T4296] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 63.414252][ T4296] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 63.453273][ T4296] 8021q: adding VLAN 0 to HW filter on device bond0 [ 63.470341][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 63.479246][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 63.498923][ T4296] 8021q: adding VLAN 0 to HW filter on device team0 [ 63.507878][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 63.516719][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 63.526170][ T154] bridge0: port 1(bridge_slave_0) entered blocking state [ 63.533249][ T154] bridge0: port 1(bridge_slave_0) entered forwarding state [ 63.541133][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 63.560412][ T1153] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 63.569314][ T1153] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 63.578800][ T1153] bridge0: port 2(bridge_slave_1) entered blocking state [ 63.585950][ T1153] bridge0: port 2(bridge_slave_1) entered forwarding state [ 63.595810][ T1153] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 63.614752][ T1153] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 63.625899][ T1153] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 63.635269][ T1153] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 63.645164][ T1153] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 63.655415][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 63.664135][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 63.681421][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 63.690256][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 63.700839][ T4296] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 63.712764][ T4296] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 63.721203][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 63.729943][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 63.747615][ T144] device hsr_slave_0 left promiscuous mode [ 63.754313][ T144] device hsr_slave_1 left promiscuous mode [ 63.760760][ T144] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 63.768996][ T144] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 63.778541][ T144] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 63.786543][ T144] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 63.795170][ T144] device bridge_slave_1 left promiscuous mode [ 63.802227][ T144] bridge0: port 2(bridge_slave_1) entered disabled state [ 63.815988][ T144] device bridge_slave_0 left promiscuous mode [ 63.822234][ T144] bridge0: port 1(bridge_slave_0) entered disabled state [ 63.838022][ T144] device veth1_macvtap left promiscuous mode [ 63.844327][ T144] device veth0_macvtap left promiscuous mode [ 63.850331][ T144] device veth1_vlan left promiscuous mode [ 63.856476][ T144] device veth0_vlan left promiscuous mode [ 63.961391][ T144] team0 (unregistering): Port device team_slave_1 removed [ 63.975578][ T144] team0 (unregistering): Port device team_slave_0 removed [ 63.986984][ T144] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 63.999235][ T144] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 64.044136][ T144] bond0 (unregistering): Released all slaves [ 64.129655][ T4237] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 64.137721][ T4237] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 64.152569][ T4296] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 64.171791][ T1153] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 64.180554][ T1153] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 64.196721][ T1153] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 64.205112][ T1153] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 64.214376][ T1153] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 64.222327][ T1153] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 64.231516][ T4296] device veth0_vlan entered promiscuous mode [ 64.240779][ T4296] device veth1_vlan entered promiscuous mode [ 64.271110][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 64.279419][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 64.288432][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 64.297391][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 64.307561][ T4296] device veth0_macvtap entered promiscuous mode [ 64.318180][ T4296] device veth1_macvtap entered promiscuous mode [ 64.335146][ T4296] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 64.343517][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 64.351995][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 64.359874][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 64.368675][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 64.380599][ T4296] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 64.388317][ T4237] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 64.397935][ T4237] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 64.408624][ T4296] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 64.417619][ T4296] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 64.426492][ T4296] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 64.435479][ T4296] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 64.485830][ T1153] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 64.493942][ T1153] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 64.507645][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 64.536206][ T4237] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 64.544143][ T4237] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 64.553171][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 64.642783][ T4311] [ 64.645155][ T4311] ====================================================== [ 64.652171][ T4311] WARNING: possible circular locking dependency detected [ 64.659207][ T4311] syzkaller #0 Not tainted [ 64.663622][ T4311] ------------------------------------------------------ [ 64.670638][ T4311] syz.0.17/4311 is trying to acquire lock: [ 64.676445][ T4311] ffff88802582cc28 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}, at: __flush_work+0xfa/0x210 [ 64.687522][ T4311] [ 64.687522][ T4311] but task is already holding lock: [ 64.694883][ T4311] ffffffff8d6c5de8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x18b/0x560 [ 64.704554][ T4311] [ 64.704554][ T4311] which lock already depends on the new lock. [ 64.704554][ T4311] [ 64.715055][ T4311] [ 64.715055][ T4311] the existing dependency chain (in reverse order) is: [ 64.724067][ T4311] [ 64.724067][ T4311] -> #4 (rfkill_global_mutex){+.+.}-{3:3}: [ 64.732162][ T4311] __mutex_lock_common+0x1e3/0x2400 [ 64.737888][ T4311] mutex_lock_nested+0x17/0x20 [ 64.743171][ T4311] rfkill_register+0x33/0x980 [ 64.748364][ T4311] hci_register_dev+0x452/0x970 [ 64.753743][ T4311] vhci_create_device+0x32c/0x5c0 [ 64.759295][ T4311] vhci_write+0x391/0x450 [ 64.764148][ T4311] vfs_write+0x745/0xd60 [ 64.768923][ T4311] ksys_write+0x152/0x260 [ 64.773774][ T4311] do_syscall_64+0x4c/0xa0 [ 64.778711][ T4311] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 64.785123][ T4311] [ 64.785123][ T4311] -> #3 (&data->open_mutex){+.+.}-{3:3}: [ 64.793067][ T4311] __mutex_lock_common+0x1e3/0x2400 [ 64.798799][ T4311] mutex_lock_nested+0x17/0x20 [ 64.804081][ T4311] vhci_send_frame+0x88/0x100 [ 64.809296][ T4311] hci_send_frame+0x1a9/0x2e0 [ 64.814505][ T4311] hci_tx_work+0x9f9/0x1710 [ 64.819533][ T4311] process_one_work+0x85f/0x1010 [ 64.824993][ T4311] worker_thread+0xaa6/0x1290 [ 64.830195][ T4311] kthread+0x436/0x520 [ 64.834783][ T4311] ret_from_fork+0x1f/0x30 [ 64.839718][ T4311] [ 64.839718][ T4311] -> #2 ((work_completion)(&hdev->tx_work)){+.+.}-{0:0}: [ 64.849025][ T4311] __flush_work+0x116/0x210 [ 64.854055][ T4311] hci_dev_do_close+0x1e7/0x1030 [ 64.859519][ T4311] hci_unregister_dev+0x2d7/0x580 [ 64.865115][ T4311] vhci_release+0x73/0xc0 [ 64.869963][ T4311] __fput+0x234/0x930 [ 64.874458][ T4311] task_work_run+0x125/0x1a0 [ 64.879594][ T4311] do_exit+0x626/0x20c0 [ 64.884253][ T4311] do_group_exit+0x12e/0x300 [ 64.889343][ T4311] get_signal+0x6ca/0x12c0 [ 64.894261][ T4311] arch_do_signal_or_restart+0xe7/0x12c0 [ 64.900396][ T4311] exit_to_user_mode_loop+0x9e/0x130 [ 64.906185][ T4311] exit_to_user_mode_prepare+0xee/0x180 [ 64.912230][ T4311] syscall_exit_to_user_mode+0x16/0x40 [ 64.918211][ T4311] do_syscall_64+0x58/0xa0 [ 64.923127][ T4311] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 64.929522][ T4311] [ 64.929522][ T4311] -> #1 (&hdev->req_lock){+.+.}-{3:3}: [ 64.937147][ T4311] __mutex_lock_common+0x1e3/0x2400 [ 64.942855][ T4311] mutex_lock_nested+0x17/0x20 [ 64.948305][ T4311] bg_scan_update+0x44/0x3b0 [ 64.953399][ T4311] process_one_work+0x85f/0x1010 [ 64.958841][ T4311] worker_thread+0xaa6/0x1290 [ 64.964033][ T4311] kthread+0x436/0x520 [ 64.968607][ T4311] ret_from_fork+0x1f/0x30 [ 64.973524][ T4311] [ 64.973524][ T4311] -> #0 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}: [ 64.983334][ T4311] __lock_acquire+0x2c42/0x7d10 [ 64.988690][ T4311] lock_acquire+0x19e/0x400 [ 64.993696][ T4311] __flush_work+0x116/0x210 [ 64.998706][ T4311] __cancel_work_timer+0x3f4/0x560 [ 65.004319][ T4311] hci_request_cancel_all+0xcc/0x300 [ 65.010107][ T4311] hci_dev_do_close+0x4e/0x1030 [ 65.015467][ T4311] hci_rfkill_set_block+0x10a/0x190 [ 65.021172][ T4311] rfkill_set_block+0x1c9/0x3d0 [ 65.026528][ T4311] rfkill_fop_write+0x452/0x560 [ 65.031875][ T4311] vfs_write+0x30b/0xd60 [ 65.036619][ T4311] ksys_write+0x152/0x260 [ 65.041454][ T4311] do_syscall_64+0x4c/0xa0 [ 65.046378][ T4311] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 65.052788][ T4311] [ 65.052788][ T4311] other info that might help us debug this: [ 65.052788][ T4311] [ 65.062999][ T4311] Chain exists of: [ 65.062999][ T4311] (work_completion)(&hdev->bg_scan_update) --> &data->open_mutex --> rfkill_global_mutex [ 65.062999][ T4311] [ 65.078702][ T4311] Possible unsafe locking scenario: [ 65.078702][ T4311] [ 65.086129][ T4311] CPU0 CPU1 [ 65.091473][ T4311] ---- ---- [ 65.096813][ T4311] lock(rfkill_global_mutex); [ 65.101559][ T4311] lock(&data->open_mutex); [ 65.108647][ T4311] lock(rfkill_global_mutex); [ 65.115910][ T4311] lock((work_completion)(&hdev->bg_scan_update)); [ 65.122481][ T4311] [ 65.122481][ T4311] *** DEADLOCK *** [ 65.122481][ T4311] [ 65.130600][ T4311] 1 lock held by syz.0.17/4311: [ 65.135428][ T4311] #0: ffffffff8d6c5de8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x18b/0x560 [ 65.145501][ T4311] [ 65.145501][ T4311] stack backtrace: [ 65.151382][ T4311] CPU: 1 PID: 4311 Comm: syz.0.17 Not tainted syzkaller #0 [ 65.158563][ T4311] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 65.168623][ T4311] Call Trace: [ 65.171889][ T4311] [ 65.174805][ T4311] dump_stack_lvl+0x188/0x250 [ 65.179466][ T4311] ? load_image+0x400/0x400 [ 65.184039][ T4311] ? show_regs_print_info+0x20/0x20 [ 65.189225][ T4311] ? print_circular_bug+0x12b/0x1a0 [ 65.194421][ T4311] check_noncircular+0x296/0x330 [ 65.199343][ T4311] ? look_up_lock_class+0x71/0x110 [ 65.204439][ T4311] ? add_chain_block+0x940/0x940 [ 65.209357][ T4311] ? lockdep_lock+0xf1/0x1f0 [ 65.213935][ T4311] ? __lock_acquire+0x12e8/0x7d10 [ 65.218944][ T4311] ? mark_lock+0x94/0x320 [ 65.223254][ T4311] __lock_acquire+0x2c42/0x7d10 [ 65.228097][ T4311] ? verify_lock_unused+0x140/0x140 [ 65.233294][ T4311] ? mark_lock+0x94/0x320 [ 65.237696][ T4311] lock_acquire+0x19e/0x400 [ 65.242185][ T4311] ? __flush_work+0xfa/0x210 [ 65.246856][ T4311] ? __lock_acquire+0x7d10/0x7d10 [ 65.251896][ T4311] ? read_lock_is_recursive+0x10/0x10 [ 65.257271][ T4311] ? start_flush_work+0x776/0x820 [ 65.263346][ T4311] __flush_work+0x116/0x210 [ 65.267843][ T4311] ? __flush_work+0xfa/0x210 [ 65.272413][ T4311] ? flush_work+0x20/0x20 [ 65.276734][ T4311] ? try_to_grab_pending+0xfa/0x7f0 [ 65.281918][ T4311] ? mark_lock+0x94/0x320 [ 65.286230][ T4311] ? lockdep_hardirqs_on_prepare+0x409/0x770 [ 65.292219][ T4311] ? lock_chain_count+0x20/0x20 [ 65.297053][ T4311] ? mark_lock+0x94/0x320 [ 65.301367][ T4311] ? __cancel_work_timer+0x36a/0x560 [ 65.306633][ T4311] __cancel_work_timer+0x3f4/0x560 [ 65.311742][ T4311] ? cancel_work_sync+0x20/0x20 [ 65.316587][ T4311] ? __cancel_work+0x1f9/0x2e0 [ 65.321352][ T4311] ? lockdep_hardirqs_on+0x94/0x140 [ 65.326539][ T4311] ? __cancel_work+0x27b/0x2e0 [ 65.331297][ T4311] ? cancel_work+0x20/0x20 [ 65.335698][ T4311] ? lock_chain_count+0x20/0x20 [ 65.340534][ T4311] hci_request_cancel_all+0xcc/0x300 [ 65.345818][ T4311] hci_dev_do_close+0x4e/0x1030 [ 65.350777][ T4311] ? _raw_spin_unlock_irqrestore+0xc1/0x120 [ 65.356672][ T4311] ? _raw_spin_unlock+0x40/0x40 [ 65.361511][ T4311] hci_rfkill_set_block+0x10a/0x190 [ 65.366701][ T4311] ? rcu_lock_release+0x20/0x20 [ 65.371539][ T4311] rfkill_set_block+0x1c9/0x3d0 [ 65.376379][ T4311] rfkill_fop_write+0x452/0x560 [ 65.381212][ T4311] ? rfkill_fop_read+0x520/0x520 [ 65.386160][ T4311] ? common_file_perm+0x140/0x1c0 [ 65.391175][ T4311] ? fsnotify_perm+0x5d/0x560 [ 65.395849][ T4311] ? security_file_permission+0x75/0xa0 [ 65.401647][ T4311] ? rfkill_fop_read+0x520/0x520 [ 65.406591][ T4311] vfs_write+0x30b/0xd60 [ 65.410830][ T4311] ? file_end_write+0x250/0x250 [ 65.415664][ T4311] ? __context_tracking_exit+0x4c/0x80 [ 65.421112][ T4311] ? __lock_acquire+0x7d10/0x7d10 [ 65.426131][ T4311] ? __fdget_pos+0x1e2/0x370 [ 65.430705][ T4311] ksys_write+0x152/0x260 [ 65.435017][ T4311] ? __ia32_sys_read+0x80/0x80 [ 65.439768][ T4311] ? lockdep_hardirqs_on+0x94/0x140 [ 65.445121][ T4311] do_syscall_64+0x4c/0xa0 [ 65.449559][ T4311] ? clear_bhb_loop+0x30/0x80 [ 65.454232][ T4311] ? clear_bhb_loop+0x30/0x80 [ 65.458899][ T4311] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 65.464788][ T4311] RIP: 0033:0x7f21676bddd9 [ 65.469189][ T4311] 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 [ 65.488784][ T4311] RSP: 002b:00007fff1a5281c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 65.497198][ T4311] RAX: ffffffffffffffda RBX: 00007f2167936fa0 RCX: 00007f21676bddd9 [ 65.505255][ T4311] RDX: 0000000000000008 RSI: 0000200000000040 RDI: 0000000000000003 [ 65.513210][ T4311] RBP: 00007f2167753d69 R08: 0000000000000000 R09: 0000000000000000 [ 65.521174][ T4311] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 65.529153][ T4311] R13: 00007f2167936fac R14: 00007f2167936fa0 R15: 00007f2167936fa0 [ 65.537129][ T4311] [ 65.564469][ T13] Bluetooth: hci0: command 0x040f tx timeout