Warning: Permanently added '10.128.1.144' (ED25519) to the list of known hosts. 2026/04/06 13:26:19 parsed 1 programs [ 69.228016][ T4191] cgroup: Unknown subsys name 'net' [ 69.368309][ T4191] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size = 127995904 bytes [ 70.917404][ T4191] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k FS [ 71.365459][ T1424] ieee802154 phy0 wpan0: encryption failed: -22 [ 71.372093][ T1424] ieee802154 phy1 wpan1: encryption failed: -22 [ 73.004862][ T154] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 73.013096][ T154] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 73.026752][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 73.048610][ T460] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 73.057735][ T460] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 73.065852][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 73.285730][ T4226] chnl_net:caif_netlink_parms(): no params data found [ 73.352905][ T4226] bridge0: port 1(bridge_slave_0) entered blocking state [ 73.361005][ T4226] bridge0: port 1(bridge_slave_0) entered disabled state [ 73.369615][ T4226] device bridge_slave_0 entered promiscuous mode [ 73.379882][ T4226] bridge0: port 2(bridge_slave_1) entered blocking state [ 73.387368][ T4226] bridge0: port 2(bridge_slave_1) entered disabled state [ 73.395951][ T4226] device bridge_slave_1 entered promiscuous mode [ 73.427763][ T4226] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 73.440321][ T4226] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 73.470517][ T4226] team0: Port device team_slave_0 added [ 73.478607][ T4226] team0: Port device team_slave_1 added [ 73.500865][ T4226] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 73.508104][ T4226] 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. [ 73.534087][ T4226] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 73.548240][ T4226] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 73.555529][ T4226] 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. [ 73.581516][ T4226] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 73.621990][ T4226] device hsr_slave_0 entered promiscuous mode [ 73.628940][ T4226] device hsr_slave_1 entered promiscuous mode [ 73.774745][ T4226] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 73.788048][ T4226] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 73.798907][ T4226] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 73.811244][ T4226] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 73.844177][ T4226] bridge0: port 2(bridge_slave_1) entered blocking state [ 73.851521][ T4226] bridge0: port 2(bridge_slave_1) entered forwarding state [ 73.859798][ T4226] bridge0: port 1(bridge_slave_0) entered blocking state [ 73.866998][ T4226] bridge0: port 1(bridge_slave_0) entered forwarding state [ 73.880329][ T460] bridge0: port 1(bridge_slave_0) entered disabled state [ 73.889994][ T460] bridge0: port 2(bridge_slave_1) entered disabled state [ 73.960225][ T4226] 8021q: adding VLAN 0 to HW filter on device bond0 [ 73.975779][ T460] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 73.985843][ T460] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 73.997645][ T4226] 8021q: adding VLAN 0 to HW filter on device team0 [ 74.009290][ T1283] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 74.018877][ T1283] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 74.027793][ T1283] bridge0: port 1(bridge_slave_0) entered blocking state [ 74.035088][ T1283] bridge0: port 1(bridge_slave_0) entered forwarding state [ 74.052672][ T460] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 74.064317][ T460] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 74.073874][ T460] bridge0: port 2(bridge_slave_1) entered blocking state [ 74.080988][ T460] bridge0: port 2(bridge_slave_1) entered forwarding state [ 74.090947][ T460] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 74.113909][ T460] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 74.123792][ T460] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 74.134821][ T460] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 74.146612][ T460] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 74.157892][ T460] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 74.167654][ T460] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 74.177580][ T460] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 74.189747][ T4226] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 74.203758][ T4226] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 74.216305][ T460] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 74.225414][ T460] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 74.235443][ T460] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 74.377960][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 74.387114][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 74.403897][ T4226] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 74.426083][ T460] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 74.436075][ T460] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 74.459988][ T460] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 74.469813][ T460] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 74.482128][ T4226] device veth0_vlan entered promiscuous mode [ 74.494337][ T460] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 74.503563][ T460] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 74.516032][ T4226] device veth1_vlan entered promiscuous mode [ 74.540948][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 74.549752][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 74.558311][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 74.568209][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 74.579875][ T4226] device veth0_macvtap entered promiscuous mode [ 74.591220][ T4226] device veth1_macvtap entered promiscuous mode [ 74.610954][ T4226] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 74.624261][ T4226] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 74.633474][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 74.642351][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 74.650634][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 74.660029][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 74.669275][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 74.679282][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 74.692500][ T4226] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 74.701491][ T4226] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 74.713066][ T4226] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 74.723123][ T4226] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 74.831927][ T4226] syz-executor (4226) used greatest stack depth: 20144 bytes left 2026/04/06 13:26:30 executed programs: 0 [ 77.186831][ T4283] chnl_net:caif_netlink_parms(): no params data found [ 77.246329][ T4283] bridge0: port 1(bridge_slave_0) entered blocking state [ 77.253682][ T4283] bridge0: port 1(bridge_slave_0) entered disabled state [ 77.261821][ T4283] device bridge_slave_0 entered promiscuous mode [ 77.270069][ T4283] bridge0: port 2(bridge_slave_1) entered blocking state [ 77.277626][ T4283] bridge0: port 2(bridge_slave_1) entered disabled state [ 77.285711][ T4283] device bridge_slave_1 entered promiscuous mode [ 77.316240][ T4283] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 77.328010][ T4283] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 77.345967][ T155] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 77.374681][ T4283] team0: Port device team_slave_0 added [ 77.383239][ T4283] team0: Port device team_slave_1 added [ 77.400993][ T4283] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 77.408649][ T4283] 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. [ 77.434985][ T4283] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 77.447782][ T4283] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 77.455178][ T4283] 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. [ 77.482367][ T4283] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 77.512709][ T4283] device hsr_slave_0 entered promiscuous mode [ 77.519413][ T4283] device hsr_slave_1 entered promiscuous mode [ 77.526215][ T4283] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 77.534181][ T4283] Cannot create hsr debugfs directory [ 79.122617][ T4247] Bluetooth: hci0: command 0x0409 tx timeout [ 80.169362][ T155] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 80.207443][ T155] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 80.279836][ T155] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 81.118010][ T4283] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 81.130013][ T4283] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 81.139766][ T4283] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 81.149726][ T4283] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 81.201788][ T3523] Bluetooth: hci0: command 0x041b tx timeout [ 81.209459][ T4283] 8021q: adding VLAN 0 to HW filter on device bond0 [ 81.222763][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 81.230698][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 81.272811][ T4283] 8021q: adding VLAN 0 to HW filter on device team0 [ 81.284626][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 81.293693][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 81.303264][ T9] bridge0: port 1(bridge_slave_0) entered blocking state [ 81.310366][ T9] bridge0: port 1(bridge_slave_0) entered forwarding state [ 81.320784][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 81.333740][ T460] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 81.342815][ T460] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 81.351228][ T460] bridge0: port 2(bridge_slave_1) entered blocking state [ 81.358439][ T460] bridge0: port 2(bridge_slave_1) entered forwarding state [ 81.370181][ T460] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 81.410961][ T460] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 81.420199][ T460] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 81.429580][ T460] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 81.447588][ T460] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 81.455710][ T460] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 81.464748][ T460] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 81.474407][ T460] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 81.483496][ T460] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 81.492547][ T460] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 81.501147][ T460] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 81.512770][ T4283] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 81.696678][ T4283] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 81.705387][ T460] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 81.716200][ T460] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 81.737462][ T460] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 81.750866][ T460] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 81.791869][ T460] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 81.801057][ T460] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 81.813859][ T460] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 81.823323][ T460] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 81.834684][ T4283] device veth0_vlan entered promiscuous mode [ 81.905908][ T4283] device veth1_vlan entered promiscuous mode [ 81.944725][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 81.954459][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 81.966136][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 81.975444][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 81.990498][ T4283] device veth0_macvtap entered promiscuous mode [ 82.015110][ T4283] device veth1_macvtap entered promiscuous mode [ 82.081172][ T4283] batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3e) already exists on: batadv_slave_0 [ 82.092653][ T4283] batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems! [ 82.104678][ T4283] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 82.115668][ T460] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 82.134406][ T460] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 82.143103][ T460] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 82.151975][ T460] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 82.162868][ T4283] batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3f) already exists on: batadv_slave_1 [ 82.174149][ T4283] batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems! [ 82.186645][ T4283] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 82.197735][ T1283] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 82.206988][ T1283] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 82.220510][ T4283] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 82.231447][ T4283] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 82.245773][ T4283] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 82.255293][ T4283] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 82.384923][ T460] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 82.395403][ T460] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 82.415510][ T1283] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 82.448313][ T1283] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 82.456642][ T1283] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 82.466613][ T1283] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 82.487505][ T155] device hsr_slave_0 left promiscuous mode [ 82.494451][ T155] device hsr_slave_1 left promiscuous mode [ 82.501107][ T155] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 82.513030][ T155] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 82.524391][ T155] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 82.531975][ T155] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 82.539919][ T155] device bridge_slave_1 left promiscuous mode [ 82.550937][ T155] bridge0: port 2(bridge_slave_1) entered disabled state [ 82.576165][ T155] device bridge_slave_0 left promiscuous mode [ 82.584754][ T155] bridge0: port 1(bridge_slave_0) entered disabled state [ 82.603311][ T155] device veth1_macvtap left promiscuous mode [ 82.609830][ T155] device veth0_macvtap left promiscuous mode [ 82.616200][ T155] device veth1_vlan left promiscuous mode [ 82.622922][ T155] device veth0_vlan left promiscuous mode [ 82.835540][ T155] team0 (unregistering): Port device team_slave_1 removed [ 82.851063][ T155] team0 (unregistering): Port device team_slave_0 removed [ 82.867801][ T155] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 82.887393][ T155] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 82.950938][ T155] bond0 (unregistering): Released all slaves [ 83.057739][ T4347] [ 83.060150][ T4347] ====================================================== [ 83.067189][ T4347] WARNING: possible circular locking dependency detected [ 83.074247][ T4347] syzkaller #0 Not tainted [ 83.078692][ T4347] ------------------------------------------------------ [ 83.085873][ T4347] syz.0.17/4347 is trying to acquire lock: [ 83.091700][ T4347] ffff8880251a4c28 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}, at: __flush_work+0xfa/0x210 [ 83.102813][ T4347] [ 83.102813][ T4347] but task is already holding lock: [ 83.110220][ T4347] ffffffff8d6c51a8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x18b/0x560 [ 83.119932][ T4347] [ 83.119932][ T4347] which lock already depends on the new lock. [ 83.119932][ T4347] [ 83.130368][ T4347] [ 83.130368][ T4347] the existing dependency chain (in reverse order) is: [ 83.139409][ T4347] [ 83.139409][ T4347] -> #4 (rfkill_global_mutex){+.+.}-{3:3}: [ 83.147461][ T4347] __mutex_lock_common+0x1e3/0x2400 [ 83.153227][ T4347] mutex_lock_nested+0x17/0x20 [ 83.158564][ T4347] rfkill_register+0x33/0x8a0 [ 83.163808][ T4347] hci_register_dev+0x452/0x970 [ 83.169404][ T4347] vhci_create_device+0x32c/0x5c0 [ 83.175082][ T4347] vhci_write+0x391/0x450 [ 83.179982][ T4347] vfs_write+0x745/0xd60 [ 83.184783][ T4347] ksys_write+0x152/0x260 [ 83.189666][ T4347] do_syscall_64+0x4c/0xa0 [ 83.194637][ T4347] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 83.201089][ T4347] [ 83.201089][ T4347] -> #3 (&data->open_mutex){+.+.}-{3:3}: [ 83.208948][ T4347] __mutex_lock_common+0x1e3/0x2400 [ 83.214728][ T4347] mutex_lock_nested+0x17/0x20 [ 83.220054][ T4347] vhci_send_frame+0x88/0x100 [ 83.225294][ T4347] hci_send_frame+0x1a9/0x2e0 [ 83.230540][ T4347] hci_tx_work+0x9f9/0x1710 [ 83.235604][ T4347] process_one_work+0x85f/0x1010 [ 83.241118][ T4347] worker_thread+0xaa6/0x1290 [ 83.246363][ T4347] kthread+0x436/0x520 [ 83.250988][ T4347] ret_from_fork+0x1f/0x30 [ 83.255968][ T4347] [ 83.255968][ T4347] -> #2 ((work_completion)(&hdev->tx_work)){+.+.}-{0:0}: [ 83.265215][ T4347] __flush_work+0x116/0x210 [ 83.270305][ T4347] hci_dev_do_close+0x1e7/0x1030 [ 83.276048][ T4347] hci_unregister_dev+0x2d7/0x580 [ 83.281631][ T4347] vhci_release+0x73/0xc0 [ 83.286674][ T4347] __fput+0x234/0x930 [ 83.291219][ T4347] task_work_run+0x125/0x1a0 [ 83.296367][ T4347] do_exit+0x626/0x20c0 [ 83.301077][ T4347] do_group_exit+0x12e/0x300 [ 83.306227][ T4347] get_signal+0x6ca/0x12c0 [ 83.311200][ T4347] arch_do_signal_or_restart+0xe7/0x12c0 [ 83.317394][ T4347] exit_to_user_mode_loop+0x9e/0x130 [ 83.323248][ T4347] exit_to_user_mode_prepare+0xee/0x180 [ 83.329359][ T4347] syscall_exit_to_user_mode+0x16/0x40 [ 83.335520][ T4347] do_syscall_64+0x58/0xa0 [ 83.340525][ T4347] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 83.346999][ T4347] [ 83.346999][ T4347] -> #1 (&hdev->req_lock){+.+.}-{3:3}: [ 83.354795][ T4347] __mutex_lock_common+0x1e3/0x2400 [ 83.360560][ T4347] mutex_lock_nested+0x17/0x20 [ 83.365887][ T4347] bg_scan_update+0x44/0x3b0 [ 83.371035][ T4347] process_one_work+0x85f/0x1010 [ 83.376547][ T4347] worker_thread+0xaa6/0x1290 [ 83.381784][ T4347] kthread+0x436/0x520 [ 83.386408][ T4347] ret_from_fork+0x1f/0x30 [ 83.391390][ T4347] [ 83.391390][ T4347] -> #0 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}: [ 83.401252][ T4347] __lock_acquire+0x2c42/0x7d10 [ 83.406779][ T4347] lock_acquire+0x19e/0x400 [ 83.411934][ T4347] __flush_work+0x116/0x210 [ 83.416999][ T4347] __cancel_work_timer+0x3f4/0x560 [ 83.422686][ T4347] hci_request_cancel_all+0xcc/0x300 [ 83.428590][ T4347] hci_dev_do_close+0x4e/0x1030 [ 83.434095][ T4347] hci_rfkill_set_block+0x10a/0x190 [ 83.439907][ T4347] rfkill_set_block+0x1c6/0x420 [ 83.445312][ T4347] rfkill_fop_write+0x452/0x560 [ 83.450731][ T4347] vfs_write+0x30b/0xd60 [ 83.455526][ T4347] ksys_write+0x152/0x260 [ 83.460469][ T4347] do_syscall_64+0x4c/0xa0 [ 83.465445][ T4347] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 83.471898][ T4347] [ 83.471898][ T4347] other info that might help us debug this: [ 83.471898][ T4347] [ 83.482152][ T4347] Chain exists of: [ 83.482152][ T4347] (work_completion)(&hdev->bg_scan_update) --> &data->open_mutex --> rfkill_global_mutex [ 83.482152][ T4347] [ 83.498019][ T4347] Possible unsafe locking scenario: [ 83.498019][ T4347] [ 83.505513][ T4347] CPU0 CPU1 [ 83.510957][ T4347] ---- ---- [ 83.516351][ T4347] lock(rfkill_global_mutex); [ 83.521245][ T4347] lock(&data->open_mutex); [ 83.528391][ T4347] lock(rfkill_global_mutex); [ 83.535709][ T4347] lock((work_completion)(&hdev->bg_scan_update)); [ 83.542331][ T4347] [ 83.542331][ T4347] *** DEADLOCK *** [ 83.542331][ T4347] [ 83.550499][ T4347] 1 lock held by syz.0.17/4347: [ 83.555372][ T4347] #0: ffffffff8d6c51a8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x18b/0x560 [ 83.565517][ T4347] [ 83.565517][ T4347] stack backtrace: [ 83.571483][ T4347] CPU: 0 PID: 4347 Comm: syz.0.17 Not tainted syzkaller #0 [ 83.578709][ T4347] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 83.588814][ T4347] Call Trace: [ 83.592131][ T4347] [ 83.595179][ T4347] dump_stack_lvl+0x188/0x250 [ 83.599909][ T4347] ? load_image+0x400/0x400 [ 83.604581][ T4347] ? show_regs_print_info+0x20/0x20 [ 83.609825][ T4347] ? print_circular_bug+0x12b/0x1a0 [ 83.615067][ T4347] check_noncircular+0x296/0x330 [ 83.620071][ T4347] ? look_up_lock_class+0x71/0x110 [ 83.625249][ T4347] ? add_chain_block+0x940/0x940 [ 83.630327][ T4347] ? lockdep_lock+0xf1/0x1f0 [ 83.634965][ T4347] ? __lock_acquire+0x12e8/0x7d10 [ 83.640031][ T4347] ? mark_lock+0x94/0x320 [ 83.644405][ T4347] __lock_acquire+0x2c42/0x7d10 [ 83.649305][ T4347] ? verify_lock_unused+0x140/0x140 [ 83.654570][ T4347] ? verify_lock_unused+0x140/0x140 [ 83.659922][ T4347] ? mark_lock+0x94/0x320 [ 83.664571][ T4347] lock_acquire+0x19e/0x400 [ 83.669130][ T4347] ? __flush_work+0xfa/0x210 [ 83.673755][ T4347] ? __lock_acquire+0x7d10/0x7d10 [ 83.678819][ T4347] ? read_lock_is_recursive+0x10/0x10 [ 83.684227][ T4347] ? start_flush_work+0x776/0x820 [ 83.689286][ T4347] __flush_work+0x116/0x210 [ 83.693864][ T4347] ? __flush_work+0xfa/0x210 [ 83.698509][ T4347] ? flush_work+0x20/0x20 [ 83.702879][ T4347] ? try_to_grab_pending+0xfa/0x7f0 [ 83.708117][ T4347] ? mark_lock+0x94/0x320 [ 83.712484][ T4347] ? lockdep_hardirqs_on_prepare+0x409/0x770 [ 83.718503][ T4347] ? lock_chain_count+0x20/0x20 [ 83.723384][ T4347] ? mark_lock+0x94/0x320 [ 83.727740][ T4347] ? __cancel_work_timer+0x36a/0x560 [ 83.733156][ T4347] __cancel_work_timer+0x3f4/0x560 [ 83.738387][ T4347] ? cancel_work_sync+0x20/0x20 [ 83.743265][ T4347] ? __cancel_work+0x1f9/0x2e0 [ 83.748058][ T4347] ? lockdep_hardirqs_on+0x94/0x140 [ 83.753290][ T4347] ? __cancel_work+0x27b/0x2e0 [ 83.758088][ T4347] ? cancel_work+0x20/0x20 [ 83.762541][ T4347] ? lock_chain_count+0x20/0x20 [ 83.767419][ T4347] hci_request_cancel_all+0xcc/0x300 [ 83.772826][ T4347] hci_dev_do_close+0x4e/0x1030 [ 83.777708][ T4347] ? _raw_spin_unlock_irqrestore+0xc1/0x120 [ 83.783634][ T4347] ? _raw_spin_unlock+0x40/0x40 [ 83.788526][ T4347] hci_rfkill_set_block+0x10a/0x190 [ 83.793777][ T4347] ? rcu_lock_release+0x20/0x20 [ 83.798667][ T4347] rfkill_set_block+0x1c6/0x420 [ 83.803593][ T4347] rfkill_fop_write+0x452/0x560 [ 83.808571][ T4347] ? rfkill_fop_read+0x4d0/0x4d0 [ 83.813552][ T4347] ? common_file_perm+0x110/0x1c0 [ 83.818610][ T4347] ? fsnotify_perm+0x5d/0x560 [ 83.823327][ T4347] ? security_file_permission+0x75/0xa0 [ 83.828912][ T4347] ? rfkill_fop_read+0x4d0/0x4d0 [ 83.833891][ T4347] vfs_write+0x30b/0xd60 [ 83.838202][ T4347] ? file_end_write+0x250/0x250 [ 83.843217][ T4347] ? __context_tracking_exit+0x4c/0x80 [ 83.848732][ T4347] ? __lock_acquire+0x7d10/0x7d10 [ 83.853804][ T4347] ? __fdget_pos+0x1e2/0x370 [ 83.858464][ T4347] ksys_write+0x152/0x260 [ 83.862842][ T4347] ? __ia32_sys_read+0x80/0x80 [ 83.867653][ T4347] ? lockdep_hardirqs_on+0x94/0x140 [ 83.872922][ T4347] do_syscall_64+0x4c/0xa0 [ 83.877380][ T4347] ? clear_bhb_loop+0x30/0x80 [ 83.882115][ T4347] ? clear_bhb_loop+0x30/0x80 [ 83.886838][ T4347] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 83.892799][ T4347] RIP: 0033:0x7fbd85b64819 [ 83.897259][ T4347] 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 [ 83.917000][ T4347] RSP: 002b:00007ffc14120f68 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 83.925510][ T4347] RAX: ffffffffffffffda RBX: 00007fbd85dddfa0 RCX: 00007fbd85b64819 [ 83.933525][ T4347] RDX: 0000000000000008 RSI: 0000200000000140 RDI: 0000000000000003 [ 83.941540][ T4347] RBP: 00007fbd85bfac91 R08: 0000000000000000 R09: 0000000000000000 [ 83.949565][ T4347] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 83.957582][ T4347] R13: 00007fbd85dddfac R14: 00007fbd85dddfa0 R15: 00007fbd85dddfa0 [ 83.965596][ T4347] [ 83.978265][ T4193] Bluetooth: hci0: command 0x040f tx timeout