Warning: Permanently added '10.128.1.189' (ED25519) to the list of known hosts. 2026/04/25 11:28:47 parsed 1 programs [ 60.881082][ T4189] cgroup: Unknown subsys name 'net' [ 60.984555][ T4189] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size = 127995904 bytes [ 62.387493][ T4189] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k FS [ 63.908852][ T155] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 63.917046][ T155] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 63.928712][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 63.946668][ T144] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 63.954700][ T144] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 63.962913][ T3069] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 65.877165][ T4252] chnl_net:caif_netlink_parms(): no params data found [ 65.951981][ T4252] bridge0: port 1(bridge_slave_0) entered blocking state [ 65.959653][ T4252] bridge0: port 1(bridge_slave_0) entered disabled state [ 65.967417][ T4252] device bridge_slave_0 entered promiscuous mode [ 65.976293][ T4252] bridge0: port 2(bridge_slave_1) entered blocking state [ 65.983471][ T4252] bridge0: port 2(bridge_slave_1) entered disabled state [ 65.991798][ T4252] device bridge_slave_1 entered promiscuous mode [ 66.010798][ T4252] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 66.022435][ T4252] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 66.043128][ T4252] team0: Port device team_slave_0 added [ 66.050626][ T4252] team0: Port device team_slave_1 added [ 66.066076][ T4252] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 66.073105][ T4252] 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. [ 66.099130][ T4252] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 66.111880][ T4252] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 66.119042][ T4252] 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. [ 66.145053][ T4252] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 66.174605][ T4252] device hsr_slave_0 entered promiscuous mode [ 66.181415][ T4252] device hsr_slave_1 entered promiscuous mode [ 66.266740][ T4252] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 66.277113][ T4252] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 66.286181][ T4252] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 66.295376][ T4252] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 66.316491][ T4252] bridge0: port 2(bridge_slave_1) entered blocking state [ 66.323772][ T4252] bridge0: port 2(bridge_slave_1) entered forwarding state [ 66.331747][ T4252] bridge0: port 1(bridge_slave_0) entered blocking state [ 66.338877][ T4252] bridge0: port 1(bridge_slave_0) entered forwarding state [ 66.381193][ T4252] 8021q: adding VLAN 0 to HW filter on device bond0 [ 66.394065][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 66.403736][ T144] bridge0: port 1(bridge_slave_0) entered disabled state [ 66.413716][ T144] bridge0: port 2(bridge_slave_1) entered disabled state [ 66.427883][ T4252] 8021q: adding VLAN 0 to HW filter on device team0 [ 66.458285][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 66.468300][ T144] bridge0: port 1(bridge_slave_0) entered blocking state [ 66.475404][ T144] bridge0: port 1(bridge_slave_0) entered forwarding state [ 66.487223][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 66.496367][ T144] bridge0: port 2(bridge_slave_1) entered blocking state [ 66.503465][ T144] bridge0: port 2(bridge_slave_1) entered forwarding state [ 66.521217][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 66.531416][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 66.545296][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 66.581696][ T4252] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 66.592396][ T4252] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 66.605266][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 66.614943][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 66.626255][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 66.735128][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 66.743379][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 66.755744][ T4252] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 66.793670][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 66.802612][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 66.820210][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 66.828391][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 66.837297][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 66.845509][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 66.855003][ T4252] device veth0_vlan entered promiscuous mode [ 66.886289][ T4252] device veth1_vlan entered promiscuous mode [ 66.904786][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 66.913532][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 66.921813][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 66.930490][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 66.942810][ T4252] device veth0_macvtap entered promiscuous mode [ 66.972412][ T4252] device veth1_macvtap entered promiscuous mode [ 66.987356][ T4252] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 66.997093][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 67.006357][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 67.015075][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 67.024107][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 67.034624][ T4252] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 67.044179][ T3069] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 67.052853][ T3069] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 67.063698][ T4252] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 67.072693][ T4252] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 67.081859][ T4252] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 67.091345][ T4252] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 2026/04/25 11:28:56 executed programs: 0 [ 68.240984][ T4295] chnl_net:caif_netlink_parms(): no params data found [ 68.303415][ T4295] bridge0: port 1(bridge_slave_0) entered blocking state [ 68.310631][ T4295] bridge0: port 1(bridge_slave_0) entered disabled state [ 68.318642][ T4295] device bridge_slave_0 entered promiscuous mode [ 68.329166][ T4295] bridge0: port 2(bridge_slave_1) entered blocking state [ 68.336281][ T4295] bridge0: port 2(bridge_slave_1) entered disabled state [ 68.346297][ T4295] device bridge_slave_1 entered promiscuous mode [ 68.375292][ T4295] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 68.386834][ T4295] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 68.415408][ T4295] team0: Port device team_slave_0 added [ 68.425408][ T4295] team0: Port device team_slave_1 added [ 68.450621][ T4295] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 68.457605][ 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. [ 68.486853][ T4295] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 68.499282][ T4295] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 68.506246][ 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. [ 68.532482][ T4295] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 68.567467][ T4295] device hsr_slave_0 entered promiscuous mode [ 68.574420][ T4295] device hsr_slave_1 entered promiscuous mode [ 68.583044][ T4295] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 68.591417][ T4295] Cannot create hsr debugfs directory [ 68.677788][ T4295] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 70.189491][ T4302] Bluetooth: hci0: command 0x0409 tx timeout [ 71.151593][ T1422] ieee802154 phy0 wpan0: encryption failed: -22 [ 71.158188][ T1422] ieee802154 phy1 wpan1: encryption failed: -22 [ 71.805871][ T4295] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 72.064222][ T4295] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 72.115633][ T4295] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 72.215331][ T4295] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 72.226119][ T4295] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 72.235134][ T4295] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 72.254533][ T4295] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 72.279010][ T4302] Bluetooth: hci0: command 0x041b tx timeout [ 72.314952][ T4295] 8021q: adding VLAN 0 to HW filter on device bond0 [ 72.326958][ T3069] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 72.334852][ T3069] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 72.346841][ T4295] 8021q: adding VLAN 0 to HW filter on device team0 [ 72.362625][ T3069] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 72.371451][ T3069] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 72.380561][ T3069] bridge0: port 1(bridge_slave_0) entered blocking state [ 72.387652][ T3069] bridge0: port 1(bridge_slave_0) entered forwarding state [ 72.396581][ T3069] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 72.414932][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 72.423725][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 72.433723][ T154] bridge0: port 2(bridge_slave_1) entered blocking state [ 72.440844][ T154] bridge0: port 2(bridge_slave_1) entered forwarding state [ 72.452388][ T3069] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 72.472453][ T3069] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 72.483707][ T3069] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 72.492893][ T3069] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 72.503016][ T3069] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 72.530938][ T3069] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 72.540338][ T3069] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 72.548727][ T3069] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 72.557150][ T3069] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 72.566111][ T3069] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 72.574717][ T3069] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 72.585411][ T4295] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 72.684223][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 72.691730][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 72.704266][ T4295] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 72.720574][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 72.730008][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 72.745790][ T9] device hsr_slave_0 left promiscuous mode [ 72.754294][ T9] device hsr_slave_1 left promiscuous mode [ 72.761027][ T9] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 72.768447][ T9] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 72.777074][ T9] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 72.784841][ T9] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 72.792832][ T9] device bridge_slave_1 left promiscuous mode [ 72.800294][ T9] bridge0: port 2(bridge_slave_1) entered disabled state [ 72.813393][ T9] device bridge_slave_0 left promiscuous mode [ 72.819910][ T9] bridge0: port 1(bridge_slave_0) entered disabled state [ 72.836077][ T9] device veth1_macvtap left promiscuous mode [ 72.842653][ T9] device veth0_macvtap left promiscuous mode [ 72.848701][ T9] device veth1_vlan left promiscuous mode [ 72.854908][ T9] device veth0_vlan left promiscuous mode [ 72.998773][ T9] team0 (unregistering): Port device team_slave_1 removed [ 73.011226][ T9] team0 (unregistering): Port device team_slave_0 removed [ 73.023997][ T9] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 73.037343][ T9] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 73.092563][ T9] bond0 (unregistering): Released all slaves [ 73.153678][ T3069] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 73.162053][ T3069] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 73.172264][ T4295] device veth0_vlan entered promiscuous mode [ 73.179700][ T3069] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 73.187555][ T3069] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 73.200708][ T4295] device veth1_vlan entered promiscuous mode [ 73.227815][ T3069] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 73.236859][ T3069] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 73.247291][ T3069] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 73.256055][ T3069] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 73.267610][ T4295] device veth0_macvtap entered promiscuous mode [ 73.277987][ T4295] device veth1_macvtap entered promiscuous mode [ 73.302101][ T4295] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 73.310021][ T3069] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 73.318005][ T3069] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 73.328846][ T3069] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 73.337445][ T3069] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 73.350272][ T4295] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 73.360196][ T4295] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 73.369061][ T4295] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 73.377761][ T4295] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 73.387858][ T4295] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 73.404717][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 73.413773][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 73.462256][ T154] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 73.473690][ T154] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 73.490169][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 73.505299][ T154] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 73.513683][ T154] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 73.522854][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 73.625467][ T4313] [ 73.627836][ T4313] ====================================================== [ 73.634858][ T4313] WARNING: possible circular locking dependency detected [ 73.641932][ T4313] syzkaller #0 Not tainted [ 73.646353][ T4313] ------------------------------------------------------ [ 73.653400][ T4313] syz.0.17/4313 is trying to acquire lock: [ 73.659211][ T4313] ffff88802ab10c28 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}, at: __flush_work+0xfa/0x210 [ 73.670306][ T4313] [ 73.670306][ T4313] but task is already holding lock: [ 73.677680][ T4313] ffffffff8d6c5de8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x18b/0x560 [ 73.687353][ T4313] [ 73.687353][ T4313] which lock already depends on the new lock. [ 73.687353][ T4313] [ 73.697787][ T4313] [ 73.697787][ T4313] the existing dependency chain (in reverse order) is: [ 73.706812][ T4313] [ 73.706812][ T4313] -> #4 (rfkill_global_mutex){+.+.}-{3:3}: [ 73.714827][ T4313] __mutex_lock_common+0x1e3/0x2400 [ 73.720583][ T4313] mutex_lock_nested+0x17/0x20 [ 73.725887][ T4313] rfkill_register+0x33/0x980 [ 73.731113][ T4313] hci_register_dev+0x452/0x970 [ 73.736516][ T4313] vhci_create_device+0x32c/0x5c0 [ 73.742090][ T4313] vhci_write+0x391/0x450 [ 73.746965][ T4313] vfs_write+0x745/0xd60 [ 73.751747][ T4313] ksys_write+0x152/0x260 [ 73.756610][ T4313] do_syscall_64+0x4c/0xa0 [ 73.761564][ T4313] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 73.768013][ T4313] [ 73.768013][ T4313] -> #3 (&data->open_mutex){+.+.}-{3:3}: [ 73.775858][ T4313] __mutex_lock_common+0x1e3/0x2400 [ 73.781609][ T4313] mutex_lock_nested+0x17/0x20 [ 73.786922][ T4313] vhci_send_frame+0x88/0x100 [ 73.792150][ T4313] hci_send_frame+0x1a9/0x2e0 [ 73.797378][ T4313] hci_tx_work+0x9f9/0x1710 [ 73.802433][ T4313] process_one_work+0x85f/0x1010 [ 73.807912][ T4313] worker_thread+0xaa6/0x1290 [ 73.813141][ T4313] kthread+0x436/0x520 [ 73.817792][ T4313] ret_from_fork+0x1f/0x30 [ 73.822752][ T4313] [ 73.822752][ T4313] -> #2 ((work_completion)(&hdev->tx_work)){+.+.}-{0:0}: [ 73.832000][ T4313] __flush_work+0x116/0x210 [ 73.837045][ T4313] hci_dev_do_close+0x1e7/0x1030 [ 73.842529][ T4313] hci_unregister_dev+0x2d7/0x580 [ 73.848107][ T4313] vhci_release+0x73/0xc0 [ 73.852997][ T4313] __fput+0x234/0x930 [ 73.857529][ T4313] task_work_run+0x125/0x1a0 [ 73.862666][ T4313] do_exit+0x626/0x20c0 [ 73.867358][ T4313] do_group_exit+0x12e/0x300 [ 73.872519][ T4313] get_signal+0x6ca/0x12c0 [ 73.877486][ T4313] arch_do_signal_or_restart+0xe7/0x12c0 [ 73.883659][ T4313] exit_to_user_mode_loop+0x9e/0x130 [ 73.889486][ T4313] exit_to_user_mode_prepare+0xee/0x180 [ 73.895603][ T4313] syscall_exit_to_user_mode+0x16/0x40 [ 73.901613][ T4313] do_syscall_64+0x58/0xa0 [ 73.906566][ T4313] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 73.913002][ T4313] [ 73.913002][ T4313] -> #1 (&hdev->req_lock){+.+.}-{3:3}: [ 73.920689][ T4313] __mutex_lock_common+0x1e3/0x2400 [ 73.926445][ T4313] mutex_lock_nested+0x17/0x20 [ 73.931753][ T4313] bg_scan_update+0x44/0x3b0 [ 73.936892][ T4313] process_one_work+0x85f/0x1010 [ 73.942435][ T4313] worker_thread+0xaa6/0x1290 [ 73.947659][ T4313] kthread+0x436/0x520 [ 73.952270][ T4313] ret_from_fork+0x1f/0x30 [ 73.957222][ T4313] [ 73.957222][ T4313] -> #0 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}: [ 73.967063][ T4313] __lock_acquire+0x2c42/0x7d10 [ 73.972456][ T4313] lock_acquire+0x19e/0x400 [ 73.977506][ T4313] __flush_work+0x116/0x210 [ 73.982544][ T4313] __cancel_work_timer+0x3f4/0x560 [ 73.988207][ T4313] hci_request_cancel_all+0xcc/0x300 [ 73.994050][ T4313] hci_dev_do_close+0x4e/0x1030 [ 73.999478][ T4313] hci_rfkill_set_block+0x10a/0x190 [ 74.005233][ T4313] rfkill_set_block+0x1c9/0x3d0 [ 74.010627][ T4313] rfkill_fop_write+0x452/0x560 [ 74.016045][ T4313] vfs_write+0x30b/0xd60 [ 74.020840][ T4313] ksys_write+0x152/0x260 [ 74.025706][ T4313] do_syscall_64+0x4c/0xa0 [ 74.030657][ T4313] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 74.037088][ T4313] [ 74.037088][ T4313] other info that might help us debug this: [ 74.037088][ T4313] [ 74.047334][ T4313] Chain exists of: [ 74.047334][ T4313] (work_completion)(&hdev->bg_scan_update) --> &data->open_mutex --> rfkill_global_mutex [ 74.047334][ T4313] [ 74.063109][ T4313] Possible unsafe locking scenario: [ 74.063109][ T4313] [ 74.070579][ T4313] CPU0 CPU1 [ 74.075947][ T4313] ---- ---- [ 74.081324][ T4313] lock(rfkill_global_mutex); [ 74.086106][ T4313] lock(&data->open_mutex); [ 74.093224][ T4313] lock(rfkill_global_mutex); [ 74.100524][ T4313] lock((work_completion)(&hdev->bg_scan_update)); [ 74.107128][ T4313] [ 74.107128][ T4313] *** DEADLOCK *** [ 74.107128][ T4313] [ 74.115284][ T4313] 1 lock held by syz.0.17/4313: [ 74.120139][ T4313] #0: ffffffff8d6c5de8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x18b/0x560 [ 74.130248][ T4313] [ 74.130248][ T4313] stack backtrace: [ 74.136170][ T4313] CPU: 0 PID: 4313 Comm: syz.0.17 Not tainted syzkaller #0 [ 74.143383][ T4313] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 74.153448][ T4313] Call Trace: [ 74.156741][ T4313] [ 74.159686][ T4313] dump_stack_lvl+0x188/0x250 [ 74.164382][ T4313] ? load_image+0x400/0x400 [ 74.168896][ T4313] ? show_regs_print_info+0x20/0x20 [ 74.174136][ T4313] ? print_circular_bug+0x12b/0x1a0 [ 74.179347][ T4313] check_noncircular+0x296/0x330 [ 74.184297][ T4313] ? look_up_lock_class+0x71/0x110 [ 74.189431][ T4313] ? add_chain_block+0x940/0x940 [ 74.194382][ T4313] ? lockdep_lock+0xf1/0x1f0 [ 74.198987][ T4313] ? __lock_acquire+0x12e8/0x7d10 [ 74.204031][ T4313] ? mark_lock+0x94/0x320 [ 74.208377][ T4313] __lock_acquire+0x2c42/0x7d10 [ 74.213250][ T4313] ? verify_lock_unused+0x140/0x140 [ 74.218517][ T4313] ? verify_lock_unused+0x140/0x140 [ 74.223744][ T4313] ? mark_lock+0x94/0x320 [ 74.228092][ T4313] lock_acquire+0x19e/0x400 [ 74.232608][ T4313] ? __flush_work+0xfa/0x210 [ 74.237219][ T4313] ? __lock_acquire+0x7d10/0x7d10 [ 74.242266][ T4313] ? read_lock_is_recursive+0x10/0x10 [ 74.247659][ T4313] ? start_flush_work+0x776/0x820 [ 74.252706][ T4313] __flush_work+0x116/0x210 [ 74.257240][ T4313] ? __flush_work+0xfa/0x210 [ 74.261862][ T4313] ? flush_work+0x20/0x20 [ 74.266246][ T4313] ? try_to_grab_pending+0xfa/0x7f0 [ 74.271460][ T4313] ? mark_lock+0x94/0x320 [ 74.275818][ T4313] ? lockdep_hardirqs_on_prepare+0x409/0x770 [ 74.281821][ T4313] ? lock_chain_count+0x20/0x20 [ 74.286702][ T4313] ? mark_lock+0x94/0x320 [ 74.291046][ T4313] ? __cancel_work_timer+0x36a/0x560 [ 74.296371][ T4313] __cancel_work_timer+0x3f4/0x560 [ 74.301495][ T4313] ? cancel_work_sync+0x20/0x20 [ 74.306378][ T4313] ? __cancel_work+0x1f9/0x2e0 [ 74.311149][ T4313] ? lockdep_hardirqs_on+0x94/0x140 [ 74.316362][ T4313] ? __cancel_work+0x27b/0x2e0 [ 74.321141][ T4313] ? cancel_work+0x20/0x20 [ 74.325568][ T4313] ? lock_chain_count+0x20/0x20 [ 74.330434][ T4313] hci_request_cancel_all+0xcc/0x300 [ 74.335732][ T4313] hci_dev_do_close+0x4e/0x1030 [ 74.340603][ T4313] ? _raw_spin_unlock_irqrestore+0xc1/0x120 [ 74.346504][ T4313] ? _raw_spin_unlock+0x40/0x40 [ 74.351375][ T4313] hci_rfkill_set_block+0x10a/0x190 [ 74.356608][ T4313] ? rcu_lock_release+0x20/0x20 [ 74.361483][ T4313] rfkill_set_block+0x1c9/0x3d0 [ 74.366346][ T4313] rfkill_fop_write+0x452/0x560 [ 74.371209][ T4313] ? rfkill_fop_read+0x520/0x520 [ 74.376161][ T4313] ? common_file_perm+0x140/0x1c0 [ 74.380695][ T4302] Bluetooth: hci0: command 0x040f tx timeout [ 74.381196][ T4313] ? fsnotify_perm+0x5d/0x560 [ 74.391851][ T4313] ? security_file_permission+0x75/0xa0 [ 74.397413][ T4313] ? rfkill_fop_read+0x520/0x520 [ 74.402383][ T4313] vfs_write+0x30b/0xd60 [ 74.406643][ T4313] ? file_end_write+0x250/0x250 [ 74.411509][ T4313] ? __context_tracking_exit+0x4c/0x80 [ 74.416996][ T4313] ? __lock_acquire+0x7d10/0x7d10 [ 74.422052][ T4313] ? __fdget_pos+0x1e2/0x370 [ 74.426671][ T4313] ksys_write+0x152/0x260 [ 74.431029][ T4313] ? __ia32_sys_read+0x80/0x80 [ 74.435835][ T4313] ? lockdep_hardirqs_on+0x94/0x140 [ 74.441052][ T4313] do_syscall_64+0x4c/0xa0 [ 74.445495][ T4313] ? clear_bhb_loop+0x30/0x80 [ 74.450187][ T4313] ? clear_bhb_loop+0x30/0x80 [ 74.454887][ T4313] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 74.460810][ T4313] RIP: 0033:0x7f3108535dd9 [ 74.465249][ T4313] 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 [ 74.484868][ T4313] RSP: 002b:00007ffd9f472488 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 74.493296][ T4313] RAX: ffffffffffffffda RBX: 00007f31087aefa0 RCX: 00007f3108535dd9 [ 74.501288][ T4313] RDX: 0000000000000008 RSI: 0000200000000300 RDI: 0000000000000003 [ 74.509283][ T4313] RBP: 00007f31085cbd69 R08: 0000000000000000 R09: 0000000000000000 [ 74.517273][ T4313] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 74.525263][ T4313] R13: 00007f31087aefac R14: 00007f31087aefa0 R15: 00007f31087aefa0 [ 74.533256][ T4313]