Warning: Permanently added '10.128.0.225' (ED25519) to the list of known hosts. 2026/04/11 20:21:26 parsed 1 programs [ 66.254666][ T4189] cgroup: Unknown subsys name 'net' [ 66.388118][ T4189] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size = 127995904 bytes [ 67.810534][ T4189] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k FS [ 69.385863][ T4213] chnl_net:caif_netlink_parms(): no params data found [ 69.437525][ T4213] bridge0: port 1(bridge_slave_0) entered blocking state [ 69.444998][ T4213] bridge0: port 1(bridge_slave_0) entered disabled state [ 69.453361][ T4213] device bridge_slave_0 entered promiscuous mode [ 69.462037][ T4213] bridge0: port 2(bridge_slave_1) entered blocking state [ 69.469118][ T4213] bridge0: port 2(bridge_slave_1) entered disabled state [ 69.477026][ T4213] device bridge_slave_1 entered promiscuous mode [ 69.497398][ T4213] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 69.510275][ T4213] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 69.532120][ T4213] team0: Port device team_slave_0 added [ 69.539417][ T4213] team0: Port device team_slave_1 added [ 69.559292][ T4213] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 69.566313][ T4213] 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. [ 69.592598][ T4213] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 69.607536][ T4213] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 69.614613][ T4213] 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. [ 69.640914][ T4213] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 69.673225][ T4213] device hsr_slave_0 entered promiscuous mode [ 69.680238][ T4213] device hsr_slave_1 entered promiscuous mode [ 69.775862][ T4213] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 69.786256][ T4213] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 69.795634][ T4213] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 69.806124][ T4213] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 69.829728][ T4213] bridge0: port 2(bridge_slave_1) entered blocking state [ 69.836927][ T4213] bridge0: port 2(bridge_slave_1) entered forwarding state [ 69.844895][ T4213] bridge0: port 1(bridge_slave_0) entered blocking state [ 69.852001][ T4213] bridge0: port 1(bridge_slave_0) entered forwarding state [ 69.904502][ T4213] 8021q: adding VLAN 0 to HW filter on device bond0 [ 69.918302][ T1262] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 69.929815][ T1262] bridge0: port 1(bridge_slave_0) entered disabled state [ 69.938895][ T1262] bridge0: port 2(bridge_slave_1) entered disabled state [ 69.948547][ T1262] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 69.963784][ T4213] 8021q: adding VLAN 0 to HW filter on device team0 [ 69.975147][ T1260] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 69.984514][ T1260] bridge0: port 1(bridge_slave_0) entered blocking state [ 69.991657][ T1260] bridge0: port 1(bridge_slave_0) entered forwarding state [ 70.014135][ T1260] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 70.025185][ T1260] bridge0: port 2(bridge_slave_1) entered blocking state [ 70.032308][ T1260] bridge0: port 2(bridge_slave_1) entered forwarding state [ 70.043044][ T1260] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 70.052612][ T1260] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 70.073611][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 70.082955][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 70.091256][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 70.104680][ T4213] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 70.226615][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 70.236967][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 70.254373][ T4213] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 70.275946][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 70.298359][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 70.310134][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 70.319025][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 70.330758][ T4213] device veth0_vlan entered promiscuous mode [ 70.344097][ T4213] device veth1_vlan entered promiscuous mode [ 70.363064][ T1262] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 70.371787][ T1262] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 70.389816][ T4213] device veth0_macvtap entered promiscuous mode [ 70.401049][ T1262] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 70.411324][ T1262] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 70.424600][ T4213] device veth1_macvtap entered promiscuous mode [ 70.441434][ T1262] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 70.450766][ T1262] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 70.469842][ T4213] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 70.478737][ T1262] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 70.489241][ T1262] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 70.501377][ T4213] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 70.510829][ T1262] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 70.520250][ T1262] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 70.532008][ T4213] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 70.540962][ T4213] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 70.550751][ T4213] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 70.560058][ T4213] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 71.155609][ T1423] ieee802154 phy0 wpan0: encryption failed: -22 [ 71.162783][ T1423] ieee802154 phy1 wpan1: encryption failed: -22 [ 71.212082][ T1262] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 71.224724][ T1262] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 71.249644][ T1260] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 71.265259][ T1262] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 71.275126][ T1262] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 71.283166][ T1260] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 71.505851][ T9] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 2026/04/11 20:21:35 executed programs: 0 [ 72.871014][ T4279] chnl_net:caif_netlink_parms(): no params data found [ 72.915408][ T4279] bridge0: port 1(bridge_slave_0) entered blocking state [ 72.922732][ T4279] bridge0: port 1(bridge_slave_0) entered disabled state [ 72.930565][ T4279] device bridge_slave_0 entered promiscuous mode [ 72.939404][ T4279] bridge0: port 2(bridge_slave_1) entered blocking state [ 72.946658][ T4279] bridge0: port 2(bridge_slave_1) entered disabled state [ 72.955398][ T4279] device bridge_slave_1 entered promiscuous mode [ 72.977032][ T4279] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 72.987874][ T4279] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 73.009775][ T4279] team0: Port device team_slave_0 added [ 73.017201][ T4279] team0: Port device team_slave_1 added [ 73.036341][ T4279] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 73.043371][ T4279] 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. [ 73.070240][ T4279] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 73.083890][ T4279] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 73.090927][ T4279] 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. [ 73.117065][ T4279] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 73.146539][ T4279] device hsr_slave_0 entered promiscuous mode [ 73.153566][ T4279] device hsr_slave_1 entered promiscuous mode [ 73.160550][ T4279] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 73.168502][ T4279] Cannot create hsr debugfs directory [ 73.918629][ T9] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 74.832643][ T4221] Bluetooth: hci0: command 0x0409 tx timeout [ 75.567292][ T9] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 75.619550][ T9] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 76.403030][ T4279] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 76.413865][ T4279] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 76.423116][ T4279] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 76.441833][ T4279] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 76.505185][ T4279] 8021q: adding VLAN 0 to HW filter on device bond0 [ 76.517473][ T906] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 76.526596][ T906] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 76.536650][ T4279] 8021q: adding VLAN 0 to HW filter on device team0 [ 76.561839][ T906] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 76.570487][ T906] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 76.579345][ T906] bridge0: port 1(bridge_slave_0) entered blocking state [ 76.586485][ T906] bridge0: port 1(bridge_slave_0) entered forwarding state [ 76.594443][ T906] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 76.606298][ T906] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 76.616058][ T906] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 76.624798][ T906] bridge0: port 2(bridge_slave_1) entered blocking state [ 76.631907][ T906] bridge0: port 2(bridge_slave_1) entered forwarding state [ 76.656378][ T906] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 76.665955][ T906] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 76.682790][ T906] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 76.691709][ T906] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 76.701310][ T906] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 76.714131][ T906] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 76.723456][ T906] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 76.734163][ T906] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 76.743362][ T906] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 76.756020][ T906] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 76.764849][ T906] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 76.774868][ T4279] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 76.879833][ T906] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 76.888183][ T906] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 76.901360][ T4279] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 76.920097][ T906] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 76.929635][ T4221] Bluetooth: hci0: command 0x041b tx timeout [ 76.937423][ T906] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 76.966590][ T1260] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 76.975048][ T1260] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 76.994962][ T4279] device veth0_vlan entered promiscuous mode [ 77.002687][ T1260] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 77.010449][ T1260] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 77.023203][ T4279] device veth1_vlan entered promiscuous mode [ 77.055008][ T9] device hsr_slave_0 left promiscuous mode [ 77.061356][ T9] device hsr_slave_1 left promiscuous mode [ 77.068177][ T9] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 77.075808][ T9] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 77.084556][ T9] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 77.092556][ T9] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 77.100203][ T9] device bridge_slave_1 left promiscuous mode [ 77.107069][ T9] bridge0: port 2(bridge_slave_1) entered disabled state [ 77.119876][ T9] device bridge_slave_0 left promiscuous mode [ 77.126128][ T9] bridge0: port 1(bridge_slave_0) entered disabled state [ 77.144434][ T9] device veth1_macvtap left promiscuous mode [ 77.150618][ T9] device veth0_macvtap left promiscuous mode [ 77.157644][ T9] device veth1_vlan left promiscuous mode [ 77.163731][ T9] device veth0_vlan left promiscuous mode [ 77.318746][ T9] team0 (unregistering): Port device team_slave_1 removed [ 77.333984][ T9] team0 (unregistering): Port device team_slave_0 removed [ 77.347642][ T9] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 77.361106][ T9] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 77.420565][ T9] bond0 (unregistering): Released all slaves [ 77.501007][ T4279] device veth0_macvtap entered promiscuous mode [ 77.509047][ T1260] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 77.517529][ T1260] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 77.525646][ T1260] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 77.534755][ T1260] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 77.546717][ T4279] device veth1_macvtap entered promiscuous mode [ 77.555672][ T1260] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 77.564162][ T1260] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 77.582195][ T4279] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 77.589953][ T1262] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 77.599659][ T1262] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 77.611828][ T4279] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 77.622672][ T4279] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 77.631416][ T4279] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 77.642062][ T4279] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 77.650785][ T4279] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 77.662052][ T1262] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 77.670642][ T1262] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 77.735519][ T906] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 77.745700][ T906] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 77.754573][ T1260] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 77.776402][ T906] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 77.784655][ T906] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 77.800329][ T906] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 77.883407][ T4326] [ 77.885784][ T4326] ====================================================== [ 77.892827][ T4326] WARNING: possible circular locking dependency detected [ 77.899868][ T4326] syzkaller #0 Not tainted [ 77.904300][ T4326] ------------------------------------------------------ [ 77.911329][ T4326] syz.0.17/4326 is trying to acquire lock: [ 77.917149][ T4326] ffff88807838cc28 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}, at: __flush_work+0xfa/0x210 [ 77.928241][ T4326] [ 77.928241][ T4326] but task is already holding lock: [ 77.935614][ T4326] ffffffff8d6c51a8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x18b/0x560 [ 77.945294][ T4326] [ 77.945294][ T4326] which lock already depends on the new lock. [ 77.945294][ T4326] [ 77.955709][ T4326] [ 77.955709][ T4326] the existing dependency chain (in reverse order) is: [ 77.964731][ T4326] [ 77.964731][ T4326] -> #4 (rfkill_global_mutex){+.+.}-{3:3}: [ 77.972749][ T4326] __mutex_lock_common+0x1e3/0x2400 [ 77.978489][ T4326] mutex_lock_nested+0x17/0x20 [ 77.983795][ T4326] rfkill_register+0x33/0x8a0 [ 77.989014][ T4326] hci_register_dev+0x452/0x970 [ 77.994416][ T4326] vhci_create_device+0x32c/0x5c0 [ 77.999979][ T4326] vhci_write+0x391/0x450 [ 78.004856][ T4326] vfs_write+0x745/0xd60 [ 78.009644][ T4326] ksys_write+0x152/0x260 [ 78.014518][ T4326] do_syscall_64+0x4c/0xa0 [ 78.019491][ T4326] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 78.025944][ T4326] [ 78.025944][ T4326] -> #3 (&data->open_mutex){+.+.}-{3:3}: [ 78.033808][ T4326] __mutex_lock_common+0x1e3/0x2400 [ 78.039556][ T4326] mutex_lock_nested+0x17/0x20 [ 78.044866][ T4326] vhci_send_frame+0x88/0x100 [ 78.050086][ T4326] hci_send_frame+0x1a9/0x2e0 [ 78.055326][ T4326] hci_tx_work+0x9f9/0x1710 [ 78.060379][ T4326] process_one_work+0x85f/0x1010 [ 78.065850][ T4326] worker_thread+0xaa6/0x1290 [ 78.071061][ T4326] kthread+0x436/0x520 [ 78.075839][ T4326] ret_from_fork+0x1f/0x30 [ 78.080787][ T4326] [ 78.080787][ T4326] -> #2 ((work_completion)(&hdev->tx_work)){+.+.}-{0:0}: [ 78.090053][ T4326] __flush_work+0x116/0x210 [ 78.095106][ T4326] hci_dev_do_close+0x1e7/0x1030 [ 78.100620][ T4326] hci_unregister_dev+0x2d7/0x580 [ 78.106183][ T4326] vhci_release+0x73/0xc0 [ 78.111048][ T4326] __fput+0x234/0x930 [ 78.115567][ T4326] task_work_run+0x125/0x1a0 [ 78.120695][ T4326] do_exit+0x626/0x20c0 [ 78.125383][ T4326] do_group_exit+0x12e/0x300 [ 78.130518][ T4326] get_signal+0x6ca/0x12c0 [ 78.135493][ T4326] arch_do_signal_or_restart+0xe7/0x12c0 [ 78.141672][ T4326] exit_to_user_mode_loop+0x9e/0x130 [ 78.147486][ T4326] exit_to_user_mode_prepare+0xee/0x180 [ 78.153567][ T4326] syscall_exit_to_user_mode+0x16/0x40 [ 78.159572][ T4326] do_syscall_64+0x58/0xa0 [ 78.164539][ T4326] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 78.170989][ T4326] [ 78.170989][ T4326] -> #1 (&hdev->req_lock){+.+.}-{3:3}: [ 78.178687][ T4326] __mutex_lock_common+0x1e3/0x2400 [ 78.184472][ T4326] mutex_lock_nested+0x17/0x20 [ 78.189803][ T4326] bg_scan_update+0x44/0x3b0 [ 78.194951][ T4326] process_one_work+0x85f/0x1010 [ 78.200433][ T4326] worker_thread+0xaa6/0x1290 [ 78.205656][ T4326] kthread+0x436/0x520 [ 78.210273][ T4326] ret_from_fork+0x1f/0x30 [ 78.215232][ T4326] [ 78.215232][ T4326] -> #0 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}: [ 78.225078][ T4326] __lock_acquire+0x2c42/0x7d10 [ 78.230493][ T4326] lock_acquire+0x19e/0x400 [ 78.235537][ T4326] __flush_work+0x116/0x210 [ 78.240614][ T4326] __cancel_work_timer+0x3f4/0x560 [ 78.246273][ T4326] hci_request_cancel_all+0xcc/0x300 [ 78.252114][ T4326] hci_dev_do_close+0x4e/0x1030 [ 78.257515][ T4326] hci_rfkill_set_block+0x10a/0x190 [ 78.263259][ T4326] rfkill_set_block+0x1c6/0x420 [ 78.268655][ T4326] rfkill_fop_write+0x452/0x560 [ 78.274053][ T4326] vfs_write+0x30b/0xd60 [ 78.278843][ T4326] ksys_write+0x152/0x260 [ 78.283719][ T4326] do_syscall_64+0x4c/0xa0 [ 78.288689][ T4326] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 78.295139][ T4326] [ 78.295139][ T4326] other info that might help us debug this: [ 78.295139][ T4326] [ 78.305412][ T4326] Chain exists of: [ 78.305412][ T4326] (work_completion)(&hdev->bg_scan_update) --> &data->open_mutex --> rfkill_global_mutex [ 78.305412][ T4326] [ 78.321181][ T4326] Possible unsafe locking scenario: [ 78.321181][ T4326] [ 78.328642][ T4326] CPU0 CPU1 [ 78.334027][ T4326] ---- ---- [ 78.339415][ T4326] lock(rfkill_global_mutex); [ 78.344201][ T4326] lock(&data->open_mutex); [ 78.351338][ T4326] lock(rfkill_global_mutex); [ 78.358643][ T4326] lock((work_completion)(&hdev->bg_scan_update)); [ 78.365261][ T4326] [ 78.365261][ T4326] *** DEADLOCK *** [ 78.365261][ T4326] [ 78.373418][ T4326] 1 lock held by syz.0.17/4326: [ 78.378282][ T4326] #0: ffffffff8d6c51a8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x18b/0x560 [ 78.388440][ T4326] [ 78.388440][ T4326] stack backtrace: [ 78.394565][ T4326] CPU: 1 PID: 4326 Comm: syz.0.17 Not tainted syzkaller #0 [ 78.401861][ T4326] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 78.411930][ T4326] Call Trace: [ 78.415224][ T4326] [ 78.418176][ T4326] dump_stack_lvl+0x188/0x250 [ 78.422880][ T4326] ? load_image+0x400/0x400 [ 78.427403][ T4326] ? show_regs_print_info+0x20/0x20 [ 78.432624][ T4326] ? print_circular_bug+0x12b/0x1a0 [ 78.437849][ T4326] check_noncircular+0x296/0x330 [ 78.442801][ T4326] ? look_up_lock_class+0x71/0x110 [ 78.447927][ T4326] ? add_chain_block+0x940/0x940 [ 78.452875][ T4326] ? lockdep_lock+0xf1/0x1f0 [ 78.457495][ T4326] ? __lock_acquire+0x12e8/0x7d10 [ 78.462569][ T4326] ? mark_lock+0x94/0x320 [ 78.466924][ T4326] __lock_acquire+0x2c42/0x7d10 [ 78.471900][ T4326] ? verify_lock_unused+0x140/0x140 [ 78.477131][ T4326] ? verify_lock_unused+0x140/0x140 [ 78.482355][ T4326] ? mark_lock+0x94/0x320 [ 78.486713][ T4326] lock_acquire+0x19e/0x400 [ 78.491234][ T4326] ? __flush_work+0xfa/0x210 [ 78.495841][ T4326] ? __lock_acquire+0x7d10/0x7d10 [ 78.500891][ T4326] ? read_lock_is_recursive+0x10/0x10 [ 78.506297][ T4326] ? start_flush_work+0x776/0x820 [ 78.511346][ T4326] __flush_work+0x116/0x210 [ 78.515971][ T4326] ? __flush_work+0xfa/0x210 [ 78.520595][ T4326] ? flush_work+0x20/0x20 [ 78.525032][ T4326] ? try_to_grab_pending+0xfa/0x7f0 [ 78.530275][ T4326] ? mark_lock+0x94/0x320 [ 78.534617][ T4326] ? lockdep_hardirqs_on_prepare+0x409/0x770 [ 78.540617][ T4326] ? lock_chain_count+0x20/0x20 [ 78.545495][ T4326] ? mark_lock+0x94/0x320 [ 78.549838][ T4326] ? __cancel_work_timer+0x36a/0x560 [ 78.555158][ T4326] __cancel_work_timer+0x3f4/0x560 [ 78.560297][ T4326] ? cancel_work_sync+0x20/0x20 [ 78.565201][ T4326] ? __cancel_work+0x1f9/0x2e0 [ 78.569988][ T4326] ? lockdep_hardirqs_on+0x94/0x140 [ 78.575203][ T4326] ? __cancel_work+0x27b/0x2e0 [ 78.579985][ T4326] ? cancel_work+0x20/0x20 [ 78.584450][ T4326] ? lock_chain_count+0x20/0x20 [ 78.589343][ T4326] hci_request_cancel_all+0xcc/0x300 [ 78.594655][ T4326] hci_dev_do_close+0x4e/0x1030 [ 78.599532][ T4326] ? _raw_spin_unlock_irqrestore+0xc1/0x120 [ 78.605446][ T4326] ? _raw_spin_unlock+0x40/0x40 [ 78.610359][ T4326] hci_rfkill_set_block+0x10a/0x190 [ 78.615586][ T4326] ? rcu_lock_release+0x20/0x20 [ 78.620465][ T4326] rfkill_set_block+0x1c6/0x420 [ 78.625573][ T4326] rfkill_fop_write+0x452/0x560 [ 78.630476][ T4326] ? rfkill_fop_read+0x4d0/0x4d0 [ 78.635435][ T4326] ? common_file_perm+0x110/0x1c0 [ 78.640564][ T4326] ? fsnotify_perm+0x5d/0x560 [ 78.645259][ T4326] ? security_file_permission+0x75/0xa0 [ 78.650817][ T4326] ? rfkill_fop_read+0x4d0/0x4d0 [ 78.655784][ T4326] vfs_write+0x30b/0xd60 [ 78.660049][ T4326] ? file_end_write+0x250/0x250 [ 78.664925][ T4326] ? __context_tracking_exit+0x4c/0x80 [ 78.670414][ T4326] ? __lock_acquire+0x7d10/0x7d10 [ 78.675465][ T4326] ? __fdget_pos+0x1e2/0x370 [ 78.680078][ T4326] ksys_write+0x152/0x260 [ 78.684437][ T4326] ? __ia32_sys_read+0x80/0x80 [ 78.689233][ T4326] ? lockdep_hardirqs_on+0x94/0x140 [ 78.694460][ T4326] do_syscall_64+0x4c/0xa0 [ 78.699039][ T4326] ? clear_bhb_loop+0x30/0x80 [ 78.703748][ T4326] ? clear_bhb_loop+0x30/0x80 [ 78.708455][ T4326] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 78.714383][ T4326] RIP: 0033:0x7f54b6065819 [ 78.718823][ T4326] 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 [ 78.738537][ T4326] RSP: 002b:00007ffd1a3e72f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 78.747061][ T4326] RAX: ffffffffffffffda RBX: 00007f54b62defa0 RCX: 00007f54b6065819 [ 78.755066][ T4326] RDX: 0000000000000008 RSI: 0000200000000180 RDI: 0000000000000003 [ 78.763070][ T4326] RBP: 00007f54b60fbc91 R08: 0000000000000000 R09: 0000000000000000 [ 78.771072][ T4326] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 78.779090][ T4326] R13: 00007f54b62defac R14: 00007f54b62defa0 R15: 00007f54b62defa0 [ 78.787095][ T4326]