Warning: Permanently added '10.128.1.243' (ED25519) to the list of known hosts. 2026/01/16 07:56:03 parsed 1 programs [ 55.558293][ T4189] cgroup: Unknown subsys name 'net' [ 55.693492][ T4189] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size = 127995904 bytes [ 57.010645][ T4189] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k FS [ 58.487939][ T3062] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 58.496091][ T3062] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 58.513102][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 58.526768][ T9] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 58.538730][ T9] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 58.551356][ T3062] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 60.143207][ T145] ODEBUG: Out of memory. ODEBUG disabled [ 60.387315][ T4233] chnl_net:caif_netlink_parms(): no params data found [ 60.427048][ T4233] bridge0: port 1(bridge_slave_0) entered blocking state [ 60.434889][ T4233] bridge0: port 1(bridge_slave_0) entered disabled state [ 60.443902][ T4233] device bridge_slave_0 entered promiscuous mode [ 60.453199][ T4233] bridge0: port 2(bridge_slave_1) entered blocking state [ 60.460388][ T4233] bridge0: port 2(bridge_slave_1) entered disabled state [ 60.468189][ T4233] device bridge_slave_1 entered promiscuous mode [ 60.486958][ T4233] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 60.497915][ T4233] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 60.518925][ T4233] team0: Port device team_slave_0 added [ 60.526092][ T4233] team0: Port device team_slave_1 added [ 60.543104][ T4233] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 60.550501][ T4233] 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. [ 60.577035][ T4233] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 60.589009][ T4233] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 60.595965][ T4233] 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. [ 60.622336][ T4233] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 60.649372][ T4233] device hsr_slave_0 entered promiscuous mode [ 60.656632][ T4233] device hsr_slave_1 entered promiscuous mode [ 60.743136][ T4233] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 60.753606][ T4233] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 60.762707][ T4233] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 60.772083][ T4233] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 60.804880][ T4233] bridge0: port 2(bridge_slave_1) entered blocking state [ 60.812051][ T4233] bridge0: port 2(bridge_slave_1) entered forwarding state [ 60.819599][ T4233] bridge0: port 1(bridge_slave_0) entered blocking state [ 60.826641][ T4233] bridge0: port 1(bridge_slave_0) entered forwarding state [ 60.862819][ T4233] 8021q: adding VLAN 0 to HW filter on device bond0 [ 60.886923][ T3062] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 60.895518][ T3062] bridge0: port 1(bridge_slave_0) entered disabled state [ 60.904558][ T3062] bridge0: port 2(bridge_slave_1) entered disabled state [ 60.914376][ T3062] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 60.927358][ T4233] 8021q: adding VLAN 0 to HW filter on device team0 [ 60.950125][ T3062] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 60.958979][ T3062] bridge0: port 1(bridge_slave_0) entered blocking state [ 60.966283][ T3062] bridge0: port 1(bridge_slave_0) entered forwarding state [ 60.981054][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 60.990651][ T144] bridge0: port 2(bridge_slave_1) entered blocking state [ 60.998375][ T144] bridge0: port 2(bridge_slave_1) entered forwarding state [ 61.026080][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 61.035764][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 61.049364][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 61.062146][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 61.074126][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 61.096938][ T4233] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 61.183450][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 61.191183][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 61.210977][ T4233] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 61.225975][ T1173] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 61.242406][ T1173] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 61.251529][ T1173] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 61.260293][ T1173] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 61.271336][ T4233] device veth0_vlan entered promiscuous mode [ 61.293351][ T4233] device veth1_vlan entered promiscuous mode [ 61.311871][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 61.320341][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 61.330356][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 61.342358][ T4233] device veth0_macvtap entered promiscuous mode [ 61.365474][ T4233] device veth1_macvtap entered promiscuous mode [ 61.381533][ T4233] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 61.389894][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 61.399253][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 61.411467][ T4233] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 61.420080][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 61.429128][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 61.470485][ T4233] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 61.480058][ T4233] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 61.489457][ T4233] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 61.498879][ T4233] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 2026/01/16 07:56:11 executed programs: 0 [ 62.810269][ T4295] chnl_net:caif_netlink_parms(): no params data found [ 62.856383][ T4295] bridge0: port 1(bridge_slave_0) entered blocking state [ 62.864249][ T4295] bridge0: port 1(bridge_slave_0) entered disabled state [ 62.872209][ T4295] device bridge_slave_0 entered promiscuous mode [ 62.880394][ T4295] bridge0: port 2(bridge_slave_1) entered blocking state [ 62.887620][ T4295] bridge0: port 2(bridge_slave_1) entered disabled state [ 62.896026][ T4295] device bridge_slave_1 entered promiscuous mode [ 62.926061][ T4295] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 62.940962][ T4295] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 62.971873][ T4295] team0: Port device team_slave_0 added [ 62.979721][ T4295] team0: Port device team_slave_1 added [ 63.000758][ T4295] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 63.008029][ T4295] 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. [ 63.035097][ T4295] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 63.050471][ T4295] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 63.057452][ T4295] 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. [ 63.084311][ T4295] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 63.120481][ T145] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 63.136368][ T4295] device hsr_slave_0 entered promiscuous mode [ 63.143616][ T4295] device hsr_slave_1 entered promiscuous mode [ 63.151262][ T4295] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 63.160553][ T4295] Cannot create hsr debugfs directory [ 64.749497][ T4261] Bluetooth: hci0: command 0x0409 tx timeout [ 65.972780][ T145] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 66.400850][ T145] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 66.444215][ T145] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 66.827971][ T4191] Bluetooth: hci0: command 0x041b tx timeout [ 67.432859][ T4295] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 67.444197][ T4295] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 67.479840][ T4295] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 67.489589][ T4295] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 67.561866][ T4295] 8021q: adding VLAN 0 to HW filter on device bond0 [ 67.574842][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 67.583201][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 67.604314][ T4295] 8021q: adding VLAN 0 to HW filter on device team0 [ 67.614039][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 67.622907][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 67.632337][ T9] bridge0: port 1(bridge_slave_0) entered blocking state [ 67.639433][ T9] bridge0: port 1(bridge_slave_0) entered forwarding state [ 67.647342][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 67.659343][ T1173] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 67.668258][ T1173] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 67.676751][ T1173] bridge0: port 2(bridge_slave_1) entered blocking state [ 67.683844][ T1173] bridge0: port 2(bridge_slave_1) entered forwarding state [ 67.695637][ T1173] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 67.724046][ T1173] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 67.732699][ T1173] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 67.741410][ T1173] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 67.750041][ T1173] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 67.759554][ T1173] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 67.768933][ T1173] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 67.783184][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 67.792121][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 67.805635][ T145] device hsr_slave_0 left promiscuous mode [ 67.813670][ T145] device hsr_slave_1 left promiscuous mode [ 67.821027][ T145] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 67.829137][ T145] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 67.837226][ T145] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 67.844914][ T145] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 67.853627][ T145] device bridge_slave_1 left promiscuous mode [ 67.861405][ T145] bridge0: port 2(bridge_slave_1) entered disabled state [ 67.874783][ T145] device bridge_slave_0 left promiscuous mode [ 67.883004][ T145] bridge0: port 1(bridge_slave_0) entered disabled state [ 67.900355][ T145] device veth1_macvtap left promiscuous mode [ 67.906908][ T145] device veth0_macvtap left promiscuous mode [ 67.913242][ T145] device veth1_vlan left promiscuous mode [ 67.919522][ T145] device veth0_vlan left promiscuous mode [ 68.032152][ T145] team0 (unregistering): Port device team_slave_1 removed [ 68.043849][ T145] team0 (unregistering): Port device team_slave_0 removed [ 68.055953][ T145] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 68.070298][ T145] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 68.114991][ T145] bond0 (unregistering): Released all slaves [ 68.194707][ T1173] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 68.203098][ T1173] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 68.214532][ T4295] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 68.301688][ T1173] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 68.309320][ T1173] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 68.321200][ T4295] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 68.351227][ T1173] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 68.360210][ T1173] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 68.376418][ T1173] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 68.384981][ T1173] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 68.395667][ T1173] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 68.408883][ T1173] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 68.417984][ T4295] device veth0_vlan entered promiscuous mode [ 68.436218][ T4295] device veth1_vlan entered promiscuous mode [ 68.454268][ T1173] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 68.462544][ T1173] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 68.471129][ T1173] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 68.479822][ T1173] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 68.490556][ T4295] device veth0_macvtap entered promiscuous mode [ 68.500967][ T4295] device veth1_macvtap entered promiscuous mode [ 68.516454][ T4295] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 68.524385][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 68.533687][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 68.542259][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 68.551098][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 68.561694][ T4295] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 68.572896][ T4295] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 68.581912][ T4295] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 68.591324][ T4295] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 68.600343][ T4295] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 68.611614][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 68.620483][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 68.684456][ T9] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 68.703686][ T9] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 68.724702][ T144] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 68.726092][ T1173] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 68.738517][ T144] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 68.751284][ T1173] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 68.870224][ T4381] [ 68.873110][ T4381] ====================================================== [ 68.880220][ T4381] WARNING: possible circular locking dependency detected [ 68.887390][ T4381] syzkaller #0 Not tainted [ 68.892108][ T4381] ------------------------------------------------------ [ 68.899323][ T4381] syz.0.17/4381 is trying to acquire lock: [ 68.905304][ T4381] ffff888074168c28 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}, at: __flush_work+0xc1/0x1b0 [ 68.916558][ T4381] [ 68.916558][ T4381] but task is already holding lock: [ 68.923942][ T4381] ffffffff8d4ba7e8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x19e/0x560 [ 68.927899][ T4261] Bluetooth: hci0: command 0x040f tx timeout [ 68.933608][ T4381] [ 68.933608][ T4381] which lock already depends on the new lock. [ 68.933608][ T4381] [ 68.933618][ T4381] [ 68.933618][ T4381] the existing dependency chain (in reverse order) is: [ 68.933622][ T4381] [ 68.933622][ T4381] -> #4 (rfkill_global_mutex){+.+.}-{3:3}: [ 68.967883][ T4381] __mutex_lock_common+0x1eb/0x2390 [ 68.973606][ T4381] mutex_lock_nested+0x17/0x20 [ 68.979083][ T4381] rfkill_register+0x33/0x8a0 [ 68.984321][ T4381] hci_register_dev+0x452/0x970 [ 68.989846][ T4381] vhci_create_device+0x32c/0x5c0 [ 68.995661][ T4381] vhci_write+0x391/0x450 [ 69.000506][ T4381] vfs_write+0x712/0xd00 [ 69.005329][ T4381] ksys_write+0x14d/0x250 [ 69.010353][ T4381] do_syscall_64+0x4c/0xa0 [ 69.015469][ T4381] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 69.022147][ T4381] [ 69.022147][ T4381] -> #3 (&data->open_mutex){+.+.}-{3:3}: [ 69.030081][ T4381] __mutex_lock_common+0x1eb/0x2390 [ 69.035847][ T4381] mutex_lock_nested+0x17/0x20 [ 69.041226][ T4381] vhci_send_frame+0x88/0x100 [ 69.046422][ T4381] hci_send_frame+0x1a9/0x2e0 [ 69.051718][ T4381] hci_tx_work+0x9f9/0x1710 [ 69.056745][ T4381] process_one_work+0x863/0x1000 [ 69.062284][ T4381] worker_thread+0xaa8/0x12a0 [ 69.067479][ T4381] kthread+0x436/0x520 [ 69.072059][ T4381] ret_from_fork+0x1f/0x30 [ 69.076998][ T4381] [ 69.076998][ T4381] -> #2 ((work_completion)(&hdev->tx_work)){+.+.}-{0:0}: [ 69.086372][ T4381] __flush_work+0xdd/0x1b0 [ 69.091346][ T4381] hci_dev_do_close+0x1e7/0x1030 [ 69.096795][ T4381] hci_unregister_dev+0x2d7/0x580 [ 69.102752][ T4381] vhci_release+0x73/0xc0 [ 69.107757][ T4381] __fput+0x234/0x930 [ 69.112240][ T4381] task_work_run+0x125/0x1a0 [ 69.117332][ T4381] do_exit+0x61e/0x20a0 [ 69.122008][ T4381] do_group_exit+0x12e/0x300 [ 69.127105][ T4381] get_signal+0x6ca/0x12c0 [ 69.132123][ T4381] arch_do_signal_or_restart+0xc1/0x1300 [ 69.138627][ T4381] exit_to_user_mode_loop+0x9e/0x130 [ 69.144516][ T4381] exit_to_user_mode_prepare+0xee/0x180 [ 69.150570][ T4381] syscall_exit_to_user_mode+0x16/0x40 [ 69.156531][ T4381] do_syscall_64+0x58/0xa0 [ 69.161447][ T4381] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 69.167982][ T4381] [ 69.167982][ T4381] -> #1 (&hdev->req_lock){+.+.}-{3:3}: [ 69.175638][ T4381] __mutex_lock_common+0x1eb/0x2390 [ 69.181367][ T4381] mutex_lock_nested+0x17/0x20 [ 69.186667][ T4381] bg_scan_update+0x44/0x3b0 [ 69.191780][ T4381] process_one_work+0x863/0x1000 [ 69.197245][ T4381] worker_thread+0xaa8/0x12a0 [ 69.202537][ T4381] kthread+0x436/0x520 [ 69.207124][ T4381] ret_from_fork+0x1f/0x30 [ 69.212066][ T4381] [ 69.212066][ T4381] -> #0 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}: [ 69.221911][ T4381] __lock_acquire+0x2c33/0x7c60 [ 69.227289][ T4381] lock_acquire+0x197/0x3f0 [ 69.232297][ T4381] __flush_work+0xdd/0x1b0 [ 69.237216][ T4381] __cancel_work_timer+0x3ac/0x520 [ 69.242825][ T4381] hci_request_cancel_all+0xcc/0x300 [ 69.248623][ T4381] hci_dev_do_close+0x4e/0x1030 [ 69.254003][ T4381] hci_rfkill_set_block+0x10a/0x190 [ 69.259952][ T4381] rfkill_set_block+0x1c6/0x420 [ 69.265345][ T4381] rfkill_fop_write+0x458/0x560 [ 69.270717][ T4381] vfs_write+0x300/0xd00 [ 69.275466][ T4381] ksys_write+0x14d/0x250 [ 69.280295][ T4381] do_syscall_64+0x4c/0xa0 [ 69.285220][ T4381] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 69.291616][ T4381] [ 69.291616][ T4381] other info that might help us debug this: [ 69.291616][ T4381] [ 69.301824][ T4381] Chain exists of: [ 69.301824][ T4381] (work_completion)(&hdev->bg_scan_update) --> &data->open_mutex --> rfkill_global_mutex [ 69.301824][ T4381] [ 69.317888][ T4381] Possible unsafe locking scenario: [ 69.317888][ T4381] [ 69.325326][ T4381] CPU0 CPU1 [ 69.330682][ T4381] ---- ---- [ 69.336043][ T4381] lock(rfkill_global_mutex); [ 69.341007][ T4381] lock(&data->open_mutex); [ 69.348196][ T4381] lock(rfkill_global_mutex); [ 69.355629][ T4381] lock((work_completion)(&hdev->bg_scan_update)); [ 69.362344][ T4381] [ 69.362344][ T4381] *** DEADLOCK *** [ 69.362344][ T4381] [ 69.371531][ T4381] 1 lock held by syz.0.17/4381: [ 69.376633][ T4381] #0: ffffffff8d4ba7e8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x19e/0x560 [ 69.386920][ T4381] [ 69.386920][ T4381] stack backtrace: [ 69.392889][ T4381] CPU: 0 PID: 4381 Comm: syz.0.17 Not tainted syzkaller #0 [ 69.400084][ T4381] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 [ 69.410137][ T4381] Call Trace: [ 69.413402][ T4381] [ 69.416321][ T4381] dump_stack_lvl+0x168/0x230 [ 69.422037][ T4381] ? load_image+0x3b0/0x3b0 [ 69.426545][ T4381] ? show_regs_print_info+0x20/0x20 [ 69.431746][ T4381] ? print_circular_bug+0x12b/0x1a0 [ 69.437025][ T4381] check_noncircular+0x274/0x310 [ 69.442070][ T4381] ? add_chain_block+0x940/0x940 [ 69.447020][ T4381] ? lockdep_lock+0xdc/0x1e0 [ 69.452055][ T4381] ? __lock_acquire+0x12d9/0x7c60 [ 69.457328][ T4381] ? lockdep_lock+0x1e0/0x1e0 [ 69.462000][ T4381] ? mark_lock+0x94/0x320 [ 69.466533][ T4381] __lock_acquire+0x2c33/0x7c60 [ 69.471602][ T4381] ? rcu_lock_release+0x5/0x20 [ 69.476370][ T4381] ? verify_lock_unused+0x140/0x140 [ 69.481737][ T4381] lock_acquire+0x197/0x3f0 [ 69.486245][ T4381] ? __flush_work+0xc1/0x1b0 [ 69.490909][ T4381] ? __lock_acquire+0x7c60/0x7c60 [ 69.496022][ T4381] ? read_lock_is_recursive+0x10/0x10 [ 69.501413][ T4381] ? start_flush_work+0x776/0x820 [ 69.506521][ T4381] __flush_work+0xdd/0x1b0 [ 69.510979][ T4381] ? __flush_work+0xc1/0x1b0 [ 69.515640][ T4381] ? flush_work+0x20/0x20 [ 69.519961][ T4381] ? try_to_grab_pending+0xf3/0x7e0 [ 69.525139][ T4381] ? lockdep_hardirqs_off+0x70/0x100 [ 69.530417][ T4381] ? mark_lock+0x94/0x320 [ 69.534733][ T4381] ? lockdep_hardirqs_on_prepare+0x3fc/0x760 [ 69.540782][ T4381] ? lock_chain_count+0x20/0x20 [ 69.545614][ T4381] ? mark_lock+0x94/0x320 [ 69.549929][ T4381] ? __cancel_work_timer+0x331/0x520 [ 69.555281][ T4381] __cancel_work_timer+0x3ac/0x520 [ 69.560377][ T4381] ? cancel_work_sync+0x20/0x20 [ 69.565207][ T4381] ? __cancel_work+0x1f4/0x2d0 [ 69.569955][ T4381] ? lockdep_hardirqs_on+0x94/0x140 [ 69.575136][ T4381] ? __cancel_work+0x26f/0x2d0 [ 69.579994][ T4381] ? cancel_work+0x20/0x20 [ 69.584390][ T4381] ? lock_chain_count+0x20/0x20 [ 69.589230][ T4381] hci_request_cancel_all+0xcc/0x300 [ 69.594533][ T4381] hci_dev_do_close+0x4e/0x1030 [ 69.599368][ T4381] ? _raw_spin_unlock_irqrestore+0xaa/0x100 [ 69.605242][ T4381] ? _raw_spin_unlock+0x40/0x40 [ 69.610076][ T4381] hci_rfkill_set_block+0x10a/0x190 [ 69.615265][ T4381] ? rcu_lock_release+0x20/0x20 [ 69.620171][ T4381] rfkill_set_block+0x1c6/0x420 [ 69.625181][ T4381] rfkill_fop_write+0x458/0x560 [ 69.630197][ T4381] ? verify_lock_unused+0x140/0x140 [ 69.635397][ T4381] ? rfkill_fop_read+0x4b0/0x4b0 [ 69.640390][ T4381] ? common_file_perm+0xc0/0x1c0 [ 69.645314][ T4381] ? fsnotify_perm+0x5d/0x560 [ 69.649976][ T4381] ? security_file_permission+0x75/0xa0 [ 69.655508][ T4381] ? rfkill_fop_read+0x4b0/0x4b0 [ 69.660435][ T4381] vfs_write+0x300/0xd00 [ 69.664667][ T4381] ? file_end_write+0x250/0x250 [ 69.669506][ T4381] ? __context_tracking_exit+0x4c/0x80 [ 69.674957][ T4381] ? __lock_acquire+0x7c60/0x7c60 [ 69.680063][ T4381] ? __fdget_pos+0x1e2/0x370 [ 69.684637][ T4381] ksys_write+0x14d/0x250 [ 69.688949][ T4381] ? __ia32_sys_read+0x80/0x80 [ 69.693695][ T4381] ? lockdep_hardirqs_on+0x94/0x140 [ 69.698877][ T4381] do_syscall_64+0x4c/0xa0 [ 69.703403][ T4381] ? clear_bhb_loop+0x30/0x80 [ 69.708081][ T4381] ? clear_bhb_loop+0x30/0x80 [ 69.712874][ T4381] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 69.718762][ T4381] RIP: 0033:0x7f12f8e26749 [ 69.723181][ T4381] Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48 [ 69.742966][ T4381] RSP: 002b:00007ffe81d9a488 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 69.751472][ T4381] RAX: ffffffffffffffda RBX: 00007f12f907cfa0 RCX: 00007f12f8e26749 [ 69.759440][ T4381] RDX: 0000000000000008 RSI: 00002000000000c0 RDI: 0000000000000003 [ 69.767397][ T4381] RBP: 00007f12f8eaaf91 R08: 0000000000000000 R09: 0000000000000000 [ 69.775348][ T4381] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 69.783394][ T4381] R13: 00007f12f907cfa0 R14: 00007f12f907cfa0 R15: 0000000000000003 [ 69.791450][ T4381]