Warning: Permanently added '10.128.0.73' (ED25519) to the list of known hosts. 2026/04/07 06:28:55 parsed 1 programs [ 64.333929][ T4188] cgroup: Unknown subsys name 'net' [ 64.465377][ T4188] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size = 127995904 bytes [ 65.811362][ T4188] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k FS [ 69.262012][ T154] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 69.271044][ T154] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 69.283856][ T1156] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 69.303465][ T4266] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 69.313781][ T4266] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 69.323025][ T1156] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 69.527840][ T4275] chnl_net:caif_netlink_parms(): no params data found [ 69.600631][ T4275] bridge0: port 1(bridge_slave_0) entered blocking state [ 69.608952][ T4275] bridge0: port 1(bridge_slave_0) entered disabled state [ 69.619382][ T4275] device bridge_slave_0 entered promiscuous mode [ 69.628652][ T4275] bridge0: port 2(bridge_slave_1) entered blocking state [ 69.637060][ T4275] bridge0: port 2(bridge_slave_1) entered disabled state [ 69.646074][ T4275] device bridge_slave_1 entered promiscuous mode [ 69.688415][ T4275] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 69.700252][ T4275] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 69.720721][ T4275] team0: Port device team_slave_0 added [ 69.729098][ T4275] team0: Port device team_slave_1 added [ 69.749407][ T4275] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 69.759205][ T4275] 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. [ 69.788872][ T4275] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 69.820803][ T4275] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 69.828999][ T4275] 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. [ 69.864709][ T4275] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 69.894470][ T4275] device hsr_slave_0 entered promiscuous mode [ 69.902551][ T4275] device hsr_slave_1 entered promiscuous mode [ 70.016014][ T4275] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 70.030592][ T4275] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 70.042265][ T4275] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 70.059547][ T4275] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 70.109714][ T4275] bridge0: port 2(bridge_slave_1) entered blocking state [ 70.120224][ T4275] bridge0: port 2(bridge_slave_1) entered forwarding state [ 70.129983][ T4275] bridge0: port 1(bridge_slave_0) entered blocking state [ 70.139845][ T4275] bridge0: port 1(bridge_slave_0) entered forwarding state [ 70.231868][ T4275] 8021q: adding VLAN 0 to HW filter on device bond0 [ 70.252200][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 70.264376][ T154] bridge0: port 1(bridge_slave_0) entered disabled state [ 70.275538][ T154] bridge0: port 2(bridge_slave_1) entered disabled state [ 70.291193][ T4275] 8021q: adding VLAN 0 to HW filter on device team0 [ 70.303354][ T4267] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 70.313444][ T4267] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 70.324875][ T4267] bridge0: port 1(bridge_slave_0) entered blocking state [ 70.334465][ T4267] bridge0: port 1(bridge_slave_0) entered forwarding state [ 70.370921][ T4267] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 70.380910][ T4267] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 70.390419][ T4267] bridge0: port 2(bridge_slave_1) entered blocking state [ 70.398172][ T4267] bridge0: port 2(bridge_slave_1) entered forwarding state [ 70.411163][ T4267] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 70.422003][ T4267] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 70.431646][ T4267] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 70.441495][ T4267] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 70.451960][ T4267] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 70.462218][ T4267] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 70.472035][ T4267] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 70.484390][ T4267] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 70.494206][ T4267] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 70.508504][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 70.518159][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 70.546055][ T4275] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 70.664893][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 70.674850][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 70.690917][ T4275] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 70.711940][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 70.722471][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 70.744629][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 70.754420][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 70.766610][ T4275] device veth0_vlan entered promiscuous mode [ 70.774986][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 70.784814][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 70.797693][ T4275] device veth1_vlan entered promiscuous mode [ 70.822810][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 70.834188][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 70.844913][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 70.859994][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 70.871439][ T4275] device veth0_macvtap entered promiscuous mode [ 70.885605][ T4275] device veth1_macvtap entered promiscuous mode [ 70.904349][ T4275] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 70.914523][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 70.924108][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 70.934736][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 70.945191][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 70.959216][ T4275] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 70.970088][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 70.980927][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 70.993785][ T4275] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 71.003664][ T4275] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 71.012916][ T4275] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 71.024057][ T4275] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 71.473243][ T1431] ieee802154 phy0 wpan0: encryption failed: -22 [ 71.480468][ T1431] ieee802154 phy1 wpan1: encryption failed: -22 2026/04/07 06:29:04 executed programs: 0 [ 71.812222][ T4292] chnl_net:caif_netlink_parms(): no params data found [ 71.861072][ T4292] bridge0: port 1(bridge_slave_0) entered blocking state [ 71.868595][ T4292] bridge0: port 1(bridge_slave_0) entered disabled state [ 71.878663][ T4292] device bridge_slave_0 entered promiscuous mode [ 71.888950][ T4292] bridge0: port 2(bridge_slave_1) entered blocking state [ 71.900281][ T4292] bridge0: port 2(bridge_slave_1) entered disabled state [ 71.909113][ T4292] device bridge_slave_1 entered promiscuous mode [ 71.936108][ T4292] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 71.948983][ T4292] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 71.983675][ T4292] team0: Port device team_slave_0 added [ 71.992312][ T4292] team0: Port device team_slave_1 added [ 72.008755][ T4292] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 72.016914][ 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. [ 72.047327][ T4292] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 72.065101][ T4292] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 72.074016][ 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. [ 72.103088][ T4292] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 72.133696][ T144] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 72.163349][ T4292] device hsr_slave_0 entered promiscuous mode [ 72.171351][ T4292] device hsr_slave_1 entered promiscuous mode [ 72.179017][ T4292] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 72.188593][ T4292] Cannot create hsr debugfs directory [ 73.711004][ T13] Bluetooth: hci0: command 0x0409 tx timeout [ 74.495595][ T144] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 75.790635][ T7] Bluetooth: hci0: command 0x041b tx timeout [ 75.814382][ T144] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 75.867183][ T144] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 76.659873][ T4292] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 76.671327][ T4292] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 76.680412][ T4292] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 76.689505][ T4292] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 76.754981][ T4292] 8021q: adding VLAN 0 to HW filter on device bond0 [ 76.768598][ T4267] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 76.777751][ T4267] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 76.802696][ T4292] 8021q: adding VLAN 0 to HW filter on device team0 [ 76.813172][ T4267] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 76.822906][ T4267] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 76.832628][ T4267] bridge0: port 1(bridge_slave_0) entered blocking state [ 76.840405][ T4267] bridge0: port 1(bridge_slave_0) entered forwarding state [ 76.852708][ T4267] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 76.862363][ T4267] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 76.872081][ T4267] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 76.882622][ T4267] bridge0: port 2(bridge_slave_1) entered blocking state [ 76.890351][ T4267] bridge0: port 2(bridge_slave_1) entered forwarding state [ 76.902915][ T4267] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 76.933225][ T4267] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 76.949325][ T4267] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 76.961948][ T4267] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 76.971288][ T4267] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 76.992770][ T4266] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 77.002682][ T4266] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 77.014130][ T4267] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 77.023411][ T4267] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 77.042321][ T4267] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 77.052026][ T4267] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 77.063977][ T4292] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 77.178175][ T4266] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 77.187183][ T4266] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 77.200942][ T4292] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 77.232450][ T144] device hsr_slave_0 left promiscuous mode [ 77.242208][ T144] device hsr_slave_1 left promiscuous mode [ 77.252135][ T144] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 77.260545][ T144] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 77.269140][ T144] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 77.277939][ T144] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 77.285842][ T144] device bridge_slave_1 left promiscuous mode [ 77.293631][ T144] bridge0: port 2(bridge_slave_1) entered disabled state [ 77.306995][ T144] device bridge_slave_0 left promiscuous mode [ 77.314477][ T144] bridge0: port 1(bridge_slave_0) entered disabled state [ 77.335873][ T144] device veth1_macvtap left promiscuous mode [ 77.343433][ T144] device veth0_macvtap left promiscuous mode [ 77.353457][ T144] device veth1_vlan left promiscuous mode [ 77.360788][ T144] device veth0_vlan left promiscuous mode [ 77.497922][ T144] team0 (unregistering): Port device team_slave_1 removed [ 77.513055][ T144] team0 (unregistering): Port device team_slave_0 removed [ 77.527281][ T144] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 77.544651][ T144] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 77.604493][ T144] bond0 (unregistering): Released all slaves [ 77.654086][ T4266] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 77.664638][ T4266] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 77.692966][ T4267] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 77.708350][ T4267] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 77.719125][ T4267] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 77.727805][ T4267] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 77.739206][ T4292] device veth0_vlan entered promiscuous mode [ 77.754086][ T4292] device veth1_vlan entered promiscuous mode [ 77.775135][ T4266] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 77.785667][ T4266] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 77.804731][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 77.817369][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 77.828480][ T4292] device veth0_macvtap entered promiscuous mode [ 77.845706][ T4292] device veth1_macvtap entered promiscuous mode [ 77.863427][ T4292] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 77.871634][ T4262] Bluetooth: hci0: command 0x040f tx timeout [ 77.878951][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 77.888360][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 77.897184][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 77.906873][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 77.923142][ T4292] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 77.932504][ T1156] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 77.942616][ T1156] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 77.955102][ T4292] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 77.966545][ T4292] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 77.976545][ T4292] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 77.986146][ T4292] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 78.066987][ T1156] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 78.083448][ T1156] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 78.093960][ T4267] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 78.125413][ T4267] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 78.134157][ T4267] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 78.144123][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 78.259132][ T4340] [ 78.261635][ T4340] ====================================================== [ 78.269754][ T4340] WARNING: possible circular locking dependency detected [ 78.279293][ T4340] syzkaller #0 Not tainted [ 78.286345][ T4340] ------------------------------------------------------ [ 78.295673][ T4340] syz.0.17/4340 is trying to acquire lock: [ 78.303145][ T4340] ffff888025640c28 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}, at: __flush_work+0xfa/0x210 [ 78.317583][ T4340] [ 78.317583][ T4340] but task is already holding lock: [ 78.326180][ T4340] ffffffff8d6c51a8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x18b/0x560 [ 78.338738][ T4340] [ 78.338738][ T4340] which lock already depends on the new lock. [ 78.338738][ T4340] [ 78.351526][ T4340] [ 78.351526][ T4340] the existing dependency chain (in reverse order) is: [ 78.362254][ T4340] [ 78.362254][ T4340] -> #4 (rfkill_global_mutex){+.+.}-{3:3}: [ 78.372942][ T4340] __mutex_lock_common+0x1e3/0x2400 [ 78.379299][ T4340] mutex_lock_nested+0x17/0x20 [ 78.385320][ T4340] rfkill_register+0x33/0x8a0 [ 78.390628][ T4340] hci_register_dev+0x452/0x970 [ 78.397483][ T4340] vhci_create_device+0x32c/0x5c0 [ 78.403745][ T4340] vhci_write+0x391/0x450 [ 78.409535][ T4340] vfs_write+0x745/0xd60 [ 78.416072][ T4340] ksys_write+0x152/0x260 [ 78.422138][ T4340] do_syscall_64+0x4c/0xa0 [ 78.428255][ T4340] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 78.435572][ T4340] [ 78.435572][ T4340] -> #3 (&data->open_mutex){+.+.}-{3:3}: [ 78.443663][ T4340] __mutex_lock_common+0x1e3/0x2400 [ 78.452685][ T4340] mutex_lock_nested+0x17/0x20 [ 78.458239][ T4340] vhci_send_frame+0x88/0x100 [ 78.463964][ T4340] hci_send_frame+0x1a9/0x2e0 [ 78.470750][ T4340] hci_tx_work+0x9f9/0x1710 [ 78.476939][ T4340] process_one_work+0x85f/0x1010 [ 78.483497][ T4340] worker_thread+0xaa6/0x1290 [ 78.489162][ T4340] kthread+0x436/0x520 [ 78.494516][ T4340] ret_from_fork+0x1f/0x30 [ 78.499635][ T4340] [ 78.499635][ T4340] -> #2 ((work_completion)(&hdev->tx_work)){+.+.}-{0:0}: [ 78.510281][ T4340] __flush_work+0x116/0x210 [ 78.517269][ T4340] hci_dev_do_close+0x1e7/0x1030 [ 78.523483][ T4340] hci_unregister_dev+0x2d7/0x580 [ 78.530194][ T4340] vhci_release+0x73/0xc0 [ 78.537190][ T4340] __fput+0x234/0x930 [ 78.543965][ T4340] task_work_run+0x125/0x1a0 [ 78.552353][ T4340] do_exit+0x626/0x20c0 [ 78.558715][ T4340] do_group_exit+0x12e/0x300 [ 78.570226][ T4340] get_signal+0x6ca/0x12c0 [ 78.576841][ T4340] arch_do_signal_or_restart+0xe7/0x12c0 [ 78.584594][ T4340] exit_to_user_mode_loop+0x9e/0x130 [ 78.592210][ T4340] exit_to_user_mode_prepare+0xee/0x180 [ 78.600947][ T4340] syscall_exit_to_user_mode+0x16/0x40 [ 78.608627][ T4340] do_syscall_64+0x58/0xa0 [ 78.614621][ T4340] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 78.622890][ T4340] [ 78.622890][ T4340] -> #1 (&hdev->req_lock){+.+.}-{3:3}: [ 78.631224][ T4340] __mutex_lock_common+0x1e3/0x2400 [ 78.639006][ T4340] mutex_lock_nested+0x17/0x20 [ 78.645139][ T4340] bg_scan_update+0x44/0x3b0 [ 78.650512][ T4340] process_one_work+0x85f/0x1010 [ 78.657073][ T4340] worker_thread+0xaa6/0x1290 [ 78.663179][ T4340] kthread+0x436/0x520 [ 78.669293][ T4340] ret_from_fork+0x1f/0x30 [ 78.675983][ T4340] [ 78.675983][ T4340] -> #0 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}: [ 78.687044][ T4340] __lock_acquire+0x2c42/0x7d10 [ 78.693184][ T4340] lock_acquire+0x19e/0x400 [ 78.699133][ T4340] __flush_work+0x116/0x210 [ 78.705532][ T4340] __cancel_work_timer+0x3f4/0x560 [ 78.712207][ T4340] hci_request_cancel_all+0xcc/0x300 [ 78.719854][ T4340] hci_dev_do_close+0x4e/0x1030 [ 78.726204][ T4340] hci_rfkill_set_block+0x10a/0x190 [ 78.732704][ T4340] rfkill_set_block+0x1c6/0x420 [ 78.739007][ T4340] rfkill_fop_write+0x452/0x560 [ 78.745628][ T4340] vfs_write+0x30b/0xd60 [ 78.750760][ T4340] ksys_write+0x152/0x260 [ 78.757355][ T4340] do_syscall_64+0x4c/0xa0 [ 78.764317][ T4340] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 78.773479][ T4340] [ 78.773479][ T4340] other info that might help us debug this: [ 78.773479][ T4340] [ 78.785937][ T4340] Chain exists of: [ 78.785937][ T4340] (work_completion)(&hdev->bg_scan_update) --> &data->open_mutex --> rfkill_global_mutex [ 78.785937][ T4340] [ 78.807073][ T4340] Possible unsafe locking scenario: [ 78.807073][ T4340] [ 78.815679][ T4340] CPU0 CPU1 [ 78.821382][ T4340] ---- ---- [ 78.827842][ T4340] lock(rfkill_global_mutex); [ 78.833517][ T4340] lock(&data->open_mutex); [ 78.842126][ T4340] lock(rfkill_global_mutex); [ 78.851261][ T4340] lock((work_completion)(&hdev->bg_scan_update)); [ 78.859036][ T4340] [ 78.859036][ T4340] *** DEADLOCK *** [ 78.859036][ T4340] [ 78.868041][ T4340] 1 lock held by syz.0.17/4340: [ 78.873671][ T4340] #0: ffffffff8d6c51a8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x18b/0x560 [ 78.884377][ T4340] [ 78.884377][ T4340] stack backtrace: [ 78.890727][ T4340] CPU: 0 PID: 4340 Comm: syz.0.17 Not tainted syzkaller #0 [ 78.899387][ T4340] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 78.911209][ T4340] Call Trace: [ 78.916155][ T4340] [ 78.920928][ T4340] dump_stack_lvl+0x188/0x250 [ 78.926468][ T4340] ? load_image+0x400/0x400 [ 78.932244][ T4340] ? show_regs_print_info+0x20/0x20 [ 78.938408][ T4340] ? print_circular_bug+0x12b/0x1a0 [ 78.944185][ T4340] check_noncircular+0x296/0x330 [ 78.949960][ T4340] ? look_up_lock_class+0x71/0x110 [ 78.955877][ T4340] ? add_chain_block+0x940/0x940 [ 78.961398][ T4340] ? lockdep_lock+0xf1/0x1f0 [ 78.966635][ T4340] ? __lock_acquire+0x12e8/0x7d10 [ 78.972197][ T4340] ? mark_lock+0x94/0x320 [ 78.976957][ T4340] __lock_acquire+0x2c42/0x7d10 [ 78.982399][ T4340] ? verify_lock_unused+0x140/0x140 [ 78.987592][ T4340] ? verify_lock_unused+0x140/0x140 [ 78.993250][ T4340] ? mark_lock+0x94/0x320 [ 78.997667][ T4340] lock_acquire+0x19e/0x400 [ 79.002827][ T4340] ? __flush_work+0xfa/0x210 [ 79.007798][ T4340] ? __lock_acquire+0x7d10/0x7d10 [ 79.013001][ T4340] ? read_lock_is_recursive+0x10/0x10 [ 79.018552][ T4340] ? start_flush_work+0x776/0x820 [ 79.023762][ T4340] __flush_work+0x116/0x210 [ 79.028257][ T4340] ? __flush_work+0xfa/0x210 [ 79.033104][ T4340] ? flush_work+0x20/0x20 [ 79.038449][ T4340] ? try_to_grab_pending+0xfa/0x7f0 [ 79.044783][ T4340] ? mark_lock+0x94/0x320 [ 79.049581][ T4340] ? lockdep_hardirqs_on_prepare+0x409/0x770 [ 79.057317][ T4340] ? lock_chain_count+0x20/0x20 [ 79.063466][ T4340] ? mark_lock+0x94/0x320 [ 79.069417][ T4340] ? __cancel_work_timer+0x36a/0x560 [ 79.076188][ T4340] __cancel_work_timer+0x3f4/0x560 [ 79.082438][ T4340] ? cancel_work_sync+0x20/0x20 [ 79.087306][ T4340] ? __cancel_work+0x1f9/0x2e0 [ 79.092265][ T4340] ? lockdep_hardirqs_on+0x94/0x140 [ 79.098191][ T4340] ? __cancel_work+0x27b/0x2e0 [ 79.103241][ T4340] ? cancel_work+0x20/0x20 [ 79.107909][ T4340] ? lock_chain_count+0x20/0x20 [ 79.113103][ T4340] hci_request_cancel_all+0xcc/0x300 [ 79.119301][ T4340] hci_dev_do_close+0x4e/0x1030 [ 79.124450][ T4340] ? _raw_spin_unlock_irqrestore+0xc1/0x120 [ 79.131061][ T4340] ? _raw_spin_unlock+0x40/0x40 [ 79.136397][ T4340] hci_rfkill_set_block+0x10a/0x190 [ 79.141904][ T4340] ? rcu_lock_release+0x20/0x20 [ 79.147662][ T4340] rfkill_set_block+0x1c6/0x420 [ 79.153101][ T4340] rfkill_fop_write+0x452/0x560 [ 79.158294][ T4340] ? rfkill_fop_read+0x4d0/0x4d0 [ 79.164628][ T4340] ? common_file_perm+0x110/0x1c0 [ 79.170230][ T4340] ? fsnotify_perm+0x5d/0x560 [ 79.178657][ T4340] ? security_file_permission+0x75/0xa0 [ 79.185046][ T4340] ? rfkill_fop_read+0x4d0/0x4d0 [ 79.191428][ T4340] vfs_write+0x30b/0xd60 [ 79.196112][ T4340] ? file_end_write+0x250/0x250 [ 79.201393][ T4340] ? __context_tracking_exit+0x4c/0x80 [ 79.207316][ T4340] ? __lock_acquire+0x7d10/0x7d10 [ 79.214239][ T4340] ? __fdget_pos+0x1e2/0x370 [ 79.219596][ T4340] ksys_write+0x152/0x260 [ 79.224361][ T4340] ? __ia32_sys_read+0x80/0x80 [ 79.229288][ T4340] ? lockdep_hardirqs_on+0x94/0x140 [ 79.234925][ T4340] do_syscall_64+0x4c/0xa0 [ 79.239607][ T4340] ? clear_bhb_loop+0x30/0x80 [ 79.245168][ T4340] ? clear_bhb_loop+0x30/0x80 [ 79.252128][ T4340] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 79.259497][ T4340] RIP: 0033:0x7fea8edc9819 [ 79.264349][ T4340] 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 [ 79.286297][ T4340] RSP: 002b:00007fff5040ec58 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 79.295815][ T4340] RAX: ffffffffffffffda RBX: 00007fea8f042fa0 RCX: 00007fea8edc9819 [ 79.304916][ T4340] RDX: 0000000000000008 RSI: 0000200000000080 RDI: 0000000000000003 [ 79.314042][ T4340] RBP: 00007fea8ee5fc91 R08: 0000000000000000 R09: 0000000000000000 [ 79.324104][ T4340] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 79.333658][ T4340] R13: 00007fea8f042fac R14: 00007fea8f042fa0 R15: 00007fea8f042fa0 [ 79.344459][ T4340]