Warning: Permanently added '10.128.0.245' (ED25519) to the list of known hosts. 2026/04/04 08:20:49 parsed 1 programs [ 61.949205][ T4189] cgroup: Unknown subsys name 'net' [ 62.064546][ T4189] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size = 127995904 bytes [ 63.616208][ T4189] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k FS [ 66.458438][ T9] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 66.466450][ T9] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 66.485780][ T438] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 66.513408][ T438] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 66.521431][ T438] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 66.530029][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 67.192059][ T4245] chnl_net:caif_netlink_parms(): no params data found [ 67.262287][ T4245] bridge0: port 1(bridge_slave_0) entered blocking state [ 67.270681][ T4245] bridge0: port 1(bridge_slave_0) entered disabled state [ 67.279932][ T4245] device bridge_slave_0 entered promiscuous mode [ 67.309003][ T4245] bridge0: port 2(bridge_slave_1) entered blocking state [ 67.316197][ T4245] bridge0: port 2(bridge_slave_1) entered disabled state [ 67.324741][ T4245] device bridge_slave_1 entered promiscuous mode [ 67.366594][ T4245] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 67.378418][ T4245] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 67.411943][ T4245] team0: Port device team_slave_0 added [ 67.425116][ T4245] team0: Port device team_slave_1 added [ 67.447908][ T4245] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 67.454987][ T4245] 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. [ 67.481220][ T4245] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 67.496760][ T4245] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 67.504570][ T4245] 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. [ 67.531678][ T4245] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 67.561376][ T4245] device hsr_slave_0 entered promiscuous mode [ 67.568439][ T4245] device hsr_slave_1 entered promiscuous mode [ 67.656226][ T4245] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 67.667001][ T4245] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 67.676282][ T4245] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 67.686671][ T4245] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 67.743677][ T4245] 8021q: adding VLAN 0 to HW filter on device bond0 [ 67.759175][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 67.767752][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 67.778856][ T4245] 8021q: adding VLAN 0 to HW filter on device team0 [ 67.790434][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 67.799198][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 67.809303][ T154] bridge0: port 1(bridge_slave_0) entered blocking state [ 67.816719][ T154] bridge0: port 1(bridge_slave_0) entered forwarding state [ 67.825816][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 67.853871][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 67.864053][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 67.872833][ T154] bridge0: port 2(bridge_slave_1) entered blocking state [ 67.879993][ T154] bridge0: port 2(bridge_slave_1) entered forwarding state [ 67.893472][ T438] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 67.906646][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 67.918281][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 67.927681][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 67.954701][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 67.964797][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 67.973579][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 67.985732][ T438] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 67.999896][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 68.028483][ T4245] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 68.124134][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 68.132552][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 68.167079][ T4245] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 68.183754][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 68.218821][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 68.227609][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 68.235841][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 68.245676][ T4245] device veth0_vlan entered promiscuous mode [ 68.274905][ T4245] device veth1_vlan entered promiscuous mode [ 68.297034][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 68.305342][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 68.315388][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 68.337646][ T4245] device veth0_macvtap entered promiscuous mode [ 68.346600][ T4245] device veth1_macvtap entered promiscuous mode [ 68.362638][ T4245] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 68.370188][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 68.379318][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 68.387976][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 68.400178][ T4245] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 68.409645][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 68.419137][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 68.429934][ T4245] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 68.439693][ T4245] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 68.449122][ T4245] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 68.458009][ T4245] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 68.600605][ T4245] syz-executor (4245) used greatest stack depth: 20304 bytes left 2026/04/04 08:20:58 executed programs: 0 [ 69.746589][ T4292] chnl_net:caif_netlink_parms(): no params data found [ 69.818053][ T4292] bridge0: port 1(bridge_slave_0) entered blocking state [ 69.825603][ T4292] bridge0: port 1(bridge_slave_0) entered disabled state [ 69.834237][ T4292] device bridge_slave_0 entered promiscuous mode [ 69.843576][ T4292] bridge0: port 2(bridge_slave_1) entered blocking state [ 69.851015][ T4292] bridge0: port 2(bridge_slave_1) entered disabled state [ 69.859537][ T4292] device bridge_slave_1 entered promiscuous mode [ 69.885368][ T4292] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 69.900482][ T4292] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 69.933526][ T4292] team0: Port device team_slave_0 added [ 69.941738][ T4292] team0: Port device team_slave_1 added [ 69.967495][ T4292] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 69.974995][ T4292] 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. [ 70.001787][ T4292] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 70.014853][ T4292] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 70.022983][ T4292] 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. [ 70.050177][ T4292] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 70.091215][ T4292] device hsr_slave_0 entered promiscuous mode [ 70.098446][ T4292] device hsr_slave_1 entered promiscuous mode [ 70.105261][ T4292] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 70.113587][ T4292] Cannot create hsr debugfs directory [ 70.204507][ T4292] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 71.490532][ T1427] ieee802154 phy0 wpan0: encryption failed: -22 [ 71.497040][ T1427] ieee802154 phy1 wpan1: encryption failed: -22 [ 71.649057][ T4303] Bluetooth: hci0: command 0x0409 tx timeout [ 73.585376][ T4292] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 73.653655][ T4292] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 73.728919][ T4262] Bluetooth: hci0: command 0x041b tx timeout [ 73.745925][ T4292] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 73.876396][ T4292] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 73.885855][ T4292] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 73.895342][ T4292] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 73.905723][ T4292] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 73.963861][ T4292] 8021q: adding VLAN 0 to HW filter on device bond0 [ 73.976344][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 73.984577][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 73.995134][ T4292] 8021q: adding VLAN 0 to HW filter on device team0 [ 74.006781][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 74.015637][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 74.024221][ T154] bridge0: port 1(bridge_slave_0) entered blocking state [ 74.031476][ T154] bridge0: port 1(bridge_slave_0) entered forwarding state [ 74.057723][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 74.065865][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 74.076156][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 74.085567][ T154] bridge0: port 2(bridge_slave_1) entered blocking state [ 74.092679][ T154] bridge0: port 2(bridge_slave_1) entered forwarding state [ 74.103074][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 74.132890][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 74.144918][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 74.154095][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 74.162946][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 74.174576][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 74.183550][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 74.194968][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 74.204016][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 74.215428][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 74.224638][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 74.248263][ T4292] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 74.337739][ T144] device hsr_slave_0 left promiscuous mode [ 74.344375][ T144] device hsr_slave_1 left promiscuous mode [ 74.351001][ T144] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 74.358883][ T144] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 74.366889][ T144] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 74.374582][ T144] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 74.383072][ T144] device bridge_slave_1 left promiscuous mode [ 74.391059][ T144] bridge0: port 2(bridge_slave_1) entered disabled state [ 74.403352][ T144] device bridge_slave_0 left promiscuous mode [ 74.409901][ T144] bridge0: port 1(bridge_slave_0) entered disabled state [ 74.425347][ T144] device veth1_macvtap left promiscuous mode [ 74.432062][ T144] device veth0_macvtap left promiscuous mode [ 74.439050][ T144] device veth1_vlan left promiscuous mode [ 74.445086][ T144] device veth0_vlan left promiscuous mode [ 74.597935][ T144] team0 (unregistering): Port device team_slave_1 removed [ 74.612480][ T144] team0 (unregistering): Port device team_slave_0 removed [ 74.625976][ T144] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 74.642183][ T144] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 74.695257][ T144] bond0 (unregistering): Released all slaves [ 74.743879][ T438] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 74.752580][ T438] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 74.763391][ T4292] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 74.789695][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 74.800595][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 74.819058][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 74.827373][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 74.837809][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 74.845804][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 74.856680][ T4292] device veth0_vlan entered promiscuous mode [ 74.877782][ T4292] device veth1_vlan entered promiscuous mode [ 74.896432][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 74.904960][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 74.913098][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 74.921988][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 74.935876][ T4292] device veth0_macvtap entered promiscuous mode [ 74.945782][ T4292] device veth1_macvtap entered promiscuous mode [ 74.963897][ T4292] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 74.974468][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 74.982702][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 74.991114][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 75.000958][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 75.012492][ T4292] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 75.020873][ T3057] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 75.029582][ T3057] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 75.041183][ T4292] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 75.050013][ T4292] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 75.059151][ T4292] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 75.067965][ T4292] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 75.127094][ T438] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 75.138975][ T438] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 75.147446][ T438] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 75.173311][ T438] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 75.182779][ T438] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 75.192169][ T3057] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 75.323170][ T4314] [ 75.325598][ T4314] ====================================================== [ 75.332807][ T4314] WARNING: possible circular locking dependency detected [ 75.339836][ T4314] syzkaller #0 Not tainted [ 75.344352][ T4314] ------------------------------------------------------ [ 75.351379][ T4314] syz.0.17/4314 is trying to acquire lock: [ 75.357195][ T4314] ffff88802b44cc28 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}, at: __flush_work+0xfa/0x210 [ 75.368279][ T4314] [ 75.368279][ T4314] but task is already holding lock: [ 75.375752][ T4314] ffffffff8d6c51a8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x18b/0x560 [ 75.385549][ T4314] [ 75.385549][ T4314] which lock already depends on the new lock. [ 75.385549][ T4314] [ 75.395977][ T4314] [ 75.395977][ T4314] the existing dependency chain (in reverse order) is: [ 75.405121][ T4314] [ 75.405121][ T4314] -> #4 (rfkill_global_mutex){+.+.}-{3:3}: [ 75.413319][ T4314] __mutex_lock_common+0x1e3/0x2400 [ 75.419159][ T4314] mutex_lock_nested+0x17/0x20 [ 75.424471][ T4314] rfkill_register+0x33/0x8a0 [ 75.429872][ T4314] hci_register_dev+0x452/0x970 [ 75.435267][ T4314] vhci_create_device+0x32c/0x5c0 [ 75.441359][ T4314] vhci_write+0x391/0x450 [ 75.446230][ T4314] vfs_write+0x745/0xd60 [ 75.451009][ T4314] ksys_write+0x152/0x260 [ 75.455880][ T4314] do_syscall_64+0x4c/0xa0 [ 75.460835][ T4314] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 75.467544][ T4314] [ 75.467544][ T4314] -> #3 (&data->open_mutex){+.+.}-{3:3}: [ 75.475565][ T4314] __mutex_lock_common+0x1e3/0x2400 [ 75.481331][ T4314] mutex_lock_nested+0x17/0x20 [ 75.486643][ T4314] vhci_send_frame+0x88/0x100 [ 75.491856][ T4314] hci_send_frame+0x1a9/0x2e0 [ 75.497245][ T4314] hci_tx_work+0x9f9/0x1710 [ 75.502281][ T4314] process_one_work+0x85f/0x1010 [ 75.507929][ T4314] worker_thread+0xaa6/0x1290 [ 75.513132][ T4314] kthread+0x436/0x520 [ 75.517727][ T4314] ret_from_fork+0x1f/0x30 [ 75.522803][ T4314] [ 75.522803][ T4314] -> #2 ((work_completion)(&hdev->tx_work)){+.+.}-{0:0}: [ 75.532117][ T4314] __flush_work+0x116/0x210 [ 75.537256][ T4314] hci_dev_do_close+0x1e7/0x1030 [ 75.542728][ T4314] hci_unregister_dev+0x2d7/0x580 [ 75.548292][ T4314] vhci_release+0x73/0xc0 [ 75.553154][ T4314] __fput+0x234/0x930 [ 75.557666][ T4314] task_work_run+0x125/0x1a0 [ 75.562796][ T4314] do_exit+0x626/0x20c0 [ 75.567491][ T4314] do_group_exit+0x12e/0x300 [ 75.572610][ T4314] get_signal+0x6ca/0x12c0 [ 75.577594][ T4314] arch_do_signal_or_restart+0xe7/0x12c0 [ 75.583758][ T4314] exit_to_user_mode_loop+0x9e/0x130 [ 75.589584][ T4314] exit_to_user_mode_prepare+0xee/0x180 [ 75.595656][ T4314] syscall_exit_to_user_mode+0x16/0x40 [ 75.601763][ T4314] do_syscall_64+0x58/0xa0 [ 75.606712][ T4314] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 75.613134][ T4314] [ 75.613134][ T4314] -> #1 (&hdev->req_lock){+.+.}-{3:3}: [ 75.620800][ T4314] __mutex_lock_common+0x1e3/0x2400 [ 75.626633][ T4314] mutex_lock_nested+0x17/0x20 [ 75.631963][ T4314] bg_scan_update+0x44/0x3b0 [ 75.637194][ T4314] process_one_work+0x85f/0x1010 [ 75.642685][ T4314] worker_thread+0xaa6/0x1290 [ 75.647913][ T4314] kthread+0x436/0x520 [ 75.652554][ T4314] ret_from_fork+0x1f/0x30 [ 75.657515][ T4314] [ 75.657515][ T4314] -> #0 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}: [ 75.667342][ T4314] __lock_acquire+0x2c42/0x7d10 [ 75.672824][ T4314] lock_acquire+0x19e/0x400 [ 75.677850][ T4314] __flush_work+0x116/0x210 [ 75.683143][ T4314] __cancel_work_timer+0x3f4/0x560 [ 75.688879][ T4314] hci_request_cancel_all+0xcc/0x300 [ 75.694796][ T4314] hci_dev_do_close+0x4e/0x1030 [ 75.700167][ T4314] hci_rfkill_set_block+0x10a/0x190 [ 75.705891][ T4314] rfkill_set_block+0x1c6/0x420 [ 75.711269][ T4314] rfkill_fop_write+0x452/0x560 [ 75.716747][ T4314] vfs_write+0x30b/0xd60 [ 75.721595][ T4314] ksys_write+0x152/0x260 [ 75.726530][ T4314] do_syscall_64+0x4c/0xa0 [ 75.731463][ T4314] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 75.737885][ T4314] [ 75.737885][ T4314] other info that might help us debug this: [ 75.737885][ T4314] [ 75.748107][ T4314] Chain exists of: [ 75.748107][ T4314] (work_completion)(&hdev->bg_scan_update) --> &data->open_mutex --> rfkill_global_mutex [ 75.748107][ T4314] [ 75.763838][ T4314] Possible unsafe locking scenario: [ 75.763838][ T4314] [ 75.771556][ T4314] CPU0 CPU1 [ 75.776918][ T4314] ---- ---- [ 75.782278][ T4314] lock(rfkill_global_mutex); [ 75.787041][ T4314] lock(&data->open_mutex); [ 75.794145][ T4314] lock(rfkill_global_mutex); [ 75.801528][ T4314] lock((work_completion)(&hdev->bg_scan_update)); [ 75.808215][ T4314] [ 75.808215][ T4314] *** DEADLOCK *** [ 75.808215][ T4314] [ 75.816451][ T4314] 1 lock held by syz.0.17/4314: [ 75.821297][ T4314] #0: ffffffff8d6c51a8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x18b/0x560 [ 75.831489][ T4314] [ 75.831489][ T4314] stack backtrace: [ 75.837460][ T4314] CPU: 1 PID: 4314 Comm: syz.0.17 Not tainted syzkaller #0 [ 75.844840][ T4314] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026 [ 75.854979][ T4314] Call Trace: [ 75.858258][ T4314] [ 75.861186][ T4314] dump_stack_lvl+0x188/0x250 [ 75.865867][ T4314] ? load_image+0x400/0x400 [ 75.870366][ T4314] ? show_regs_print_info+0x20/0x20 [ 75.875565][ T4314] ? print_circular_bug+0x12b/0x1a0 [ 75.880768][ T4314] check_noncircular+0x296/0x330 [ 75.885733][ T4314] ? look_up_lock_class+0x71/0x110 [ 75.890859][ T4314] ? add_chain_block+0x940/0x940 [ 75.895805][ T4314] ? lockdep_lock+0xf1/0x1f0 [ 75.900407][ T4314] ? __lock_acquire+0x12e8/0x7d10 [ 75.905450][ T4314] ? mark_lock+0x94/0x320 [ 75.909773][ T4314] __lock_acquire+0x2c42/0x7d10 [ 75.914629][ T4314] ? verify_lock_unused+0x140/0x140 [ 75.919834][ T4314] ? verify_lock_unused+0x140/0x140 [ 75.925035][ T4314] ? mark_lock+0x94/0x320 [ 75.929554][ T4314] lock_acquire+0x19e/0x400 [ 75.934065][ T4314] ? __flush_work+0xfa/0x210 [ 75.938742][ T4314] ? __lock_acquire+0x7d10/0x7d10 [ 75.943855][ T4314] ? read_lock_is_recursive+0x10/0x10 [ 75.949331][ T4314] ? start_flush_work+0x776/0x820 [ 75.954482][ T4314] __flush_work+0x116/0x210 [ 75.958994][ T4314] ? __flush_work+0xfa/0x210 [ 75.963587][ T4314] ? flush_work+0x20/0x20 [ 75.967915][ T4314] ? try_to_grab_pending+0xfa/0x7f0 [ 75.973119][ T4314] ? mark_lock+0x94/0x320 [ 75.977532][ T4314] ? lockdep_hardirqs_on_prepare+0x409/0x770 [ 75.983608][ T4314] ? lock_chain_count+0x20/0x20 [ 75.988494][ T4314] ? mark_lock+0x94/0x320 [ 75.992912][ T4314] ? __cancel_work_timer+0x36a/0x560 [ 75.998196][ T4314] __cancel_work_timer+0x3f4/0x560 [ 76.003482][ T4314] ? cancel_work_sync+0x20/0x20 [ 76.008459][ T4314] ? __cancel_work+0x1f9/0x2e0 [ 76.013307][ T4314] ? lockdep_hardirqs_on+0x94/0x140 [ 76.018506][ T4314] ? __cancel_work+0x27b/0x2e0 [ 76.023270][ T4314] ? cancel_work+0x20/0x20 [ 76.027858][ T4314] ? lock_chain_count+0x20/0x20 [ 76.032707][ T4314] hci_request_cancel_all+0xcc/0x300 [ 76.037998][ T4314] hci_dev_do_close+0x4e/0x1030 [ 76.043066][ T4314] ? _raw_spin_unlock_irqrestore+0xc1/0x120 [ 76.049037][ T4314] ? _raw_spin_unlock+0x40/0x40 [ 76.053896][ T4314] hci_rfkill_set_block+0x10a/0x190 [ 76.059096][ T4314] ? rcu_lock_release+0x20/0x20 [ 76.063953][ T4314] rfkill_set_block+0x1c6/0x420 [ 76.068817][ T4314] rfkill_fop_write+0x452/0x560 [ 76.073858][ T4314] ? rfkill_fop_read+0x4d0/0x4d0 [ 76.078798][ T4314] ? common_file_perm+0x110/0x1c0 [ 76.083824][ T4314] ? fsnotify_perm+0x5d/0x560 [ 76.088508][ T4314] ? security_file_permission+0x75/0xa0 [ 76.094050][ T4314] ? rfkill_fop_read+0x4d0/0x4d0 [ 76.099165][ T4314] vfs_write+0x30b/0xd60 [ 76.103411][ T4314] ? file_end_write+0x250/0x250 [ 76.108256][ T4314] ? __context_tracking_exit+0x4c/0x80 [ 76.113714][ T4314] ? __lock_acquire+0x7d10/0x7d10 [ 76.119093][ T4314] ? __fdget_pos+0x1e2/0x370 [ 76.123765][ T4314] ksys_write+0x152/0x260 [ 76.128096][ T4314] ? __ia32_sys_read+0x80/0x80 [ 76.133212][ T4314] ? lockdep_hardirqs_on+0x94/0x140 [ 76.138411][ T4314] do_syscall_64+0x4c/0xa0 [ 76.142912][ T4314] ? clear_bhb_loop+0x30/0x80 [ 76.147585][ T4314] ? clear_bhb_loop+0x30/0x80 [ 76.152260][ T4314] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 76.158414][ T4314] RIP: 0033:0x7f956999e819 [ 76.162831][ T4314] 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 [ 76.182522][ T4314] RSP: 002b:00007ffd724aa218 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 76.190938][ T4314] RAX: ffffffffffffffda RBX: 00007f9569c17fa0 RCX: 00007f956999e819 [ 76.199011][ T4314] RDX: 0000000000000008 RSI: 0000200000000080 RDI: 0000000000000003 [ 76.207085][ T4314] RBP: 00007f9569a34c91 R08: 0000000000000000 R09: 0000000000000000 [ 76.215078][ T4314] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 76.223202][ T4314] R13: 00007f9569c17fac R14: 00007f9569c17fa0 R15: 00007f9569c17fa0 [ 76.231284][ T4314] [ 76.260008][ T4263] Bluetooth: hci0: command 0x040f tx timeout