Warning: Permanently added '10.128.1.172' (ED25519) to the list of known hosts. 2026/05/30 06:55:59 parsed 1 programs [ 70.724105][ T4201] cgroup: Unknown subsys name 'net' [ 70.848752][ T4201] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size = 127995904 bytes [ 71.245196][ T1421] ieee802154 phy0 wpan0: encryption failed: -22 [ 71.251864][ T1421] ieee802154 phy1 wpan1: encryption failed: -22 [ 72.592159][ T4201] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k FS [ 75.149511][ T3105] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 75.163612][ T3105] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 75.177914][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 75.203180][ T3105] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 75.212195][ T3105] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 75.222344][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 76.271800][ T4250] chnl_net:caif_netlink_parms(): no params data found [ 76.350632][ T4250] bridge0: port 1(bridge_slave_0) entered blocking state [ 76.359064][ T4250] bridge0: port 1(bridge_slave_0) entered disabled state [ 76.368989][ T4250] device bridge_slave_0 entered promiscuous mode [ 76.384028][ T4250] bridge0: port 2(bridge_slave_1) entered blocking state [ 76.391853][ T4250] bridge0: port 2(bridge_slave_1) entered disabled state [ 76.402451][ T4250] device bridge_slave_1 entered promiscuous mode [ 76.443026][ T4250] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 76.462080][ T4250] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 76.501706][ T4250] team0: Port device team_slave_0 added [ 76.512508][ T4250] team0: Port device team_slave_1 added [ 76.545252][ T4250] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 76.553885][ T4250] 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. [ 76.590359][ T4250] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 76.608159][ T4250] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 76.616525][ T4250] 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. [ 76.653007][ T4250] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 76.705696][ T4250] device hsr_slave_0 entered promiscuous mode [ 76.713569][ T4250] device hsr_slave_1 entered promiscuous mode [ 76.891739][ T4250] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 76.906662][ T4250] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 76.918900][ T4250] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 76.930678][ T4250] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 76.965598][ T4250] bridge0: port 2(bridge_slave_1) entered blocking state [ 76.974858][ T4250] bridge0: port 2(bridge_slave_1) entered forwarding state [ 76.984551][ T4250] bridge0: port 1(bridge_slave_0) entered blocking state [ 76.993237][ T4250] bridge0: port 1(bridge_slave_0) entered forwarding state [ 77.056608][ T4250] 8021q: adding VLAN 0 to HW filter on device bond0 [ 77.081906][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 77.097791][ T144] bridge0: port 1(bridge_slave_0) entered disabled state [ 77.216382][ T144] bridge0: port 2(bridge_slave_1) entered disabled state [ 77.234337][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 77.298647][ T4250] 8021q: adding VLAN 0 to HW filter on device team0 [ 77.312783][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 77.323335][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 77.335370][ T144] bridge0: port 1(bridge_slave_0) entered blocking state [ 77.343425][ T144] bridge0: port 1(bridge_slave_0) entered forwarding state [ 77.360546][ T3105] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 77.370462][ T3105] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 77.381974][ T3105] bridge0: port 2(bridge_slave_1) entered blocking state [ 77.389434][ T3105] bridge0: port 2(bridge_slave_1) entered forwarding state [ 77.397647][ T3105] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 77.408505][ T3105] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 77.424001][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 77.435028][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 77.446019][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 77.459403][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 77.468973][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 77.482077][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 77.492297][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 77.506029][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 77.516560][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 77.532392][ T4250] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 77.653659][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 77.663736][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 77.696579][ T4250] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 77.717007][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 77.727463][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 77.771899][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 77.781733][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 77.795614][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 77.805530][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 77.835331][ T4250] device veth0_vlan entered promiscuous mode [ 77.850534][ T4250] device veth1_vlan entered promiscuous mode [ 77.881899][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 77.892574][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 77.901693][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 77.911751][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 77.935832][ T4250] device veth0_macvtap entered promiscuous mode [ 77.947484][ T4250] device veth1_macvtap entered promiscuous mode [ 77.965536][ T4250] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 77.975092][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 77.984112][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 77.993795][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 78.003825][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 78.021310][ T4250] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 78.032077][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 78.042291][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 78.075219][ T4250] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 78.085799][ T4250] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 78.096349][ T4250] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 78.105207][ T4250] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 2026/05/30 06:56:11 executed programs: 0 [ 80.503250][ T302] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 80.646030][ T4310] chnl_net:caif_netlink_parms(): no params data found [ 80.701437][ T4310] bridge0: port 1(bridge_slave_0) entered blocking state [ 80.712054][ T4310] bridge0: port 1(bridge_slave_0) entered disabled state [ 80.722375][ T4310] device bridge_slave_0 entered promiscuous mode [ 80.733597][ T4310] bridge0: port 2(bridge_slave_1) entered blocking state [ 80.742800][ T4310] bridge0: port 2(bridge_slave_1) entered disabled state [ 80.755371][ T4310] device bridge_slave_1 entered promiscuous mode [ 80.784774][ T4310] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 80.798332][ T4310] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 80.831584][ T4310] team0: Port device team_slave_0 added [ 80.843345][ T4310] team0: Port device team_slave_1 added [ 80.867915][ T4310] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 80.877997][ T4310] 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. [ 80.904722][ T4310] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 80.920545][ T4310] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 80.929285][ T4310] 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. [ 80.964168][ T4310] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 80.999464][ T4310] device hsr_slave_0 entered promiscuous mode [ 81.009041][ T4310] device hsr_slave_1 entered promiscuous mode [ 81.016498][ T4310] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 81.026787][ T4310] Cannot create hsr debugfs directory [ 82.358460][ T302] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 82.419096][ T302] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 82.499549][ T302] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 82.601003][ T4270] Bluetooth: hci0: command 0x0409 tx timeout [ 83.466368][ T4310] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 83.480783][ T4310] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 83.501696][ T4310] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 83.513832][ T4310] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 83.634246][ T4310] 8021q: adding VLAN 0 to HW filter on device bond0 [ 83.657139][ T4310] 8021q: adding VLAN 0 to HW filter on device team0 [ 83.667800][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 83.680348][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 83.718476][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 83.729514][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 83.746397][ T144] bridge0: port 1(bridge_slave_0) entered blocking state [ 83.759815][ T144] bridge0: port 1(bridge_slave_0) entered forwarding state [ 83.779028][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 83.817072][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 83.828401][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 83.844419][ T9] bridge0: port 2(bridge_slave_1) entered blocking state [ 83.855448][ T9] bridge0: port 2(bridge_slave_1) entered forwarding state [ 83.874558][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 83.891613][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 83.926883][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 83.938227][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 83.951122][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 83.977620][ T302] device hsr_slave_0 left promiscuous mode [ 83.993670][ T302] device hsr_slave_1 left promiscuous mode [ 84.002809][ T302] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 84.012349][ T302] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 84.025375][ T302] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 84.038345][ T302] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 84.050639][ T302] device bridge_slave_1 left promiscuous mode [ 84.059250][ T302] bridge0: port 2(bridge_slave_1) entered disabled state [ 84.078907][ T302] device bridge_slave_0 left promiscuous mode [ 84.091392][ T302] bridge0: port 1(bridge_slave_0) entered disabled state [ 84.119545][ T302] device veth1_macvtap left promiscuous mode [ 84.127632][ T302] device veth0_macvtap left promiscuous mode [ 84.135659][ T302] device veth1_vlan left promiscuous mode [ 84.145684][ T302] device veth0_vlan left promiscuous mode [ 84.401657][ T302] team0 (unregistering): Port device team_slave_1 removed [ 84.424923][ T302] team0 (unregistering): Port device team_slave_0 removed [ 84.450707][ T302] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 84.472568][ T302] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 84.566213][ T302] bond0 (unregistering): Released all slaves [ 84.645612][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 84.657553][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 84.669490][ T3105] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 84.681411][ T7] Bluetooth: hci0: command 0x041b tx timeout [ 84.690465][ T3105] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 84.715883][ T3105] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 84.726314][ T3105] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 84.748361][ T4310] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 84.960903][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 84.974435][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 84.995154][ T4310] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 85.051016][ T3105] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 85.064230][ T3105] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 85.097079][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 85.114980][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 85.131523][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 85.140826][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 85.161740][ T4310] device veth0_vlan entered promiscuous mode [ 85.191474][ T4310] device veth1_vlan entered promiscuous mode [ 85.236064][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 85.248333][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 85.265691][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 85.280244][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 85.299234][ T4310] device veth0_macvtap entered promiscuous mode [ 85.313325][ T4310] device veth1_macvtap entered promiscuous mode [ 85.337356][ T4310] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 85.352155][ T4310] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 85.365326][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 85.380138][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 85.392161][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 85.406447][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 85.422141][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 85.434585][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 85.456360][ T4310] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 85.470393][ T4310] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 85.482587][ T4310] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 85.494669][ T4310] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 85.586142][ T144] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 85.603783][ T144] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 85.620949][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 85.660339][ T9] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 85.674575][ T9] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 85.687364][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 85.879335][ T4360] [ 85.884107][ T4360] ====================================================== [ 85.892379][ T4360] WARNING: possible circular locking dependency detected [ 85.902927][ T4360] syzkaller #0 Not tainted [ 85.909464][ T4360] ------------------------------------------------------ [ 85.918491][ T4360] syz.0.17/4360 is trying to acquire lock: [ 85.926393][ T4360] ffff88807436cc28 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}, at: __flush_work+0xfa/0x210 [ 85.941032][ T4360] [ 85.941032][ T4360] but task is already holding lock: [ 85.952730][ T4360] ffffffff8d6c65a8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x18b/0x560 [ 85.968531][ T4360] [ 85.968531][ T4360] which lock already depends on the new lock. [ 85.968531][ T4360] [ 85.982469][ T4360] [ 85.982469][ T4360] the existing dependency chain (in reverse order) is: [ 85.996809][ T4360] [ 85.996809][ T4360] -> #4 (rfkill_global_mutex){+.+.}-{3:3}: [ 86.011659][ T4360] __mutex_lock_common+0x1e3/0x2400 [ 86.020621][ T4360] mutex_lock_nested+0x17/0x20 [ 86.027681][ T4360] rfkill_register+0x33/0x980 [ 86.034876][ T4360] hci_register_dev+0x452/0x970 [ 86.044325][ T4360] vhci_create_device+0x32c/0x5c0 [ 86.051832][ T4360] vhci_write+0x391/0x450 [ 86.059019][ T4360] vfs_write+0x745/0xd60 [ 86.067343][ T4360] ksys_write+0x152/0x260 [ 86.078462][ T4360] do_syscall_64+0x4c/0xa0 [ 86.085008][ T4360] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 86.093238][ T4360] [ 86.093238][ T4360] -> #3 (&data->open_mutex){+.+.}-{3:3}: [ 86.107008][ T4360] __mutex_lock_common+0x1e3/0x2400 [ 86.121259][ T4360] mutex_lock_nested+0x17/0x20 [ 86.128387][ T4360] vhci_send_frame+0x88/0x100 [ 86.136604][ T4360] hci_send_frame+0x1a9/0x2e0 [ 86.143516][ T4360] hci_tx_work+0x9f9/0x1710 [ 86.150211][ T4360] process_one_work+0x85f/0x1010 [ 86.157456][ T4360] worker_thread+0xaa6/0x1290 [ 86.164977][ T4360] kthread+0x436/0x520 [ 86.171304][ T4360] ret_from_fork+0x1f/0x30 [ 86.179486][ T4360] [ 86.179486][ T4360] -> #2 ((work_completion)(&hdev->tx_work)){+.+.}-{0:0}: [ 86.194863][ T4360] __flush_work+0x116/0x210 [ 86.201487][ T4360] hci_dev_do_close+0x1e7/0x1030 [ 86.210160][ T4360] hci_unregister_dev+0x2d7/0x580 [ 86.217970][ T4360] vhci_release+0x73/0xc0 [ 86.223268][ T4360] __fput+0x234/0x930 [ 86.229327][ T4360] task_work_run+0x125/0x1a0 [ 86.235084][ T4360] do_exit+0x626/0x20c0 [ 86.241001][ T4360] do_group_exit+0x12e/0x300 [ 86.251026][ T4360] get_signal+0x6d6/0x12d0 [ 86.259665][ T4360] arch_do_signal_or_restart+0xe7/0x12c0 [ 86.268689][ T4360] exit_to_user_mode_loop+0x9e/0x130 [ 86.275331][ T4360] exit_to_user_mode_prepare+0xee/0x180 [ 86.281956][ T4360] syscall_exit_to_user_mode+0x16/0x40 [ 86.291218][ T4360] do_syscall_64+0x58/0xa0 [ 86.297155][ T4360] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 86.304134][ T4360] [ 86.304134][ T4360] -> #1 (&hdev->req_lock){+.+.}-{3:3}: [ 86.312331][ T4360] __mutex_lock_common+0x1e3/0x2400 [ 86.320291][ T4360] mutex_lock_nested+0x17/0x20 [ 86.326590][ T4360] bg_scan_update+0x44/0x3b0 [ 86.334626][ T4360] process_one_work+0x85f/0x1010 [ 86.341185][ T4360] worker_thread+0xaa6/0x1290 [ 86.347553][ T4360] kthread+0x436/0x520 [ 86.353749][ T4360] ret_from_fork+0x1f/0x30 [ 86.360183][ T4360] [ 86.360183][ T4360] -> #0 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}: [ 86.377568][ T4360] __lock_acquire+0x2c42/0x7d10 [ 86.383755][ T4360] lock_acquire+0x19e/0x400 [ 86.391943][ T4360] __flush_work+0x116/0x210 [ 86.400107][ T4360] __cancel_work_timer+0x3f4/0x560 [ 86.408265][ T4360] hci_request_cancel_all+0xcc/0x300 [ 86.417820][ T4360] hci_dev_do_close+0x4e/0x1030 [ 86.425124][ T4360] hci_rfkill_set_block+0x10a/0x190 [ 86.432262][ T4360] rfkill_set_block+0x1c9/0x3d0 [ 86.438554][ T4360] rfkill_fop_write+0x452/0x560 [ 86.447383][ T4360] vfs_write+0x30b/0xd60 [ 86.453477][ T4360] ksys_write+0x152/0x260 [ 86.458432][ T4360] do_syscall_64+0x4c/0xa0 [ 86.465082][ T4360] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 86.475565][ T4360] [ 86.475565][ T4360] other info that might help us debug this: [ 86.475565][ T4360] [ 86.488690][ T4360] Chain exists of: [ 86.488690][ T4360] (work_completion)(&hdev->bg_scan_update) --> &data->open_mutex --> rfkill_global_mutex [ 86.488690][ T4360] [ 86.511067][ T4360] Possible unsafe locking scenario: [ 86.511067][ T4360] [ 86.521017][ T4360] CPU0 CPU1 [ 86.527792][ T4360] ---- ---- [ 86.535619][ T4360] lock(rfkill_global_mutex); [ 86.546116][ T4360] lock(&data->open_mutex); [ 86.554933][ T4360] lock(rfkill_global_mutex); [ 86.564650][ T4360] lock((work_completion)(&hdev->bg_scan_update)); [ 86.574513][ T4360] [ 86.574513][ T4360] *** DEADLOCK *** [ 86.574513][ T4360] [ 86.587283][ T4360] 1 lock held by syz.0.17/4360: [ 86.594017][ T4360] #0: ffffffff8d6c65a8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x18b/0x560 [ 86.605490][ T4360] [ 86.605490][ T4360] stack backtrace: [ 86.613504][ T4360] CPU: 0 PID: 4360 Comm: syz.0.17 Not tainted syzkaller #0 [ 86.623919][ T4360] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 86.631892][ T1108] cfg80211: failed to load regulatory.db [ 86.636424][ T4360] Call Trace: [ 86.648336][ T4360] [ 86.653291][ T4360] dump_stack_lvl+0x188/0x250 [ 86.660323][ T4360] ? load_image+0x400/0x400 [ 86.666378][ T4360] ? show_regs_print_info+0x20/0x20 [ 86.673737][ T4360] ? print_circular_bug+0x12b/0x1a0 [ 86.682279][ T4360] check_noncircular+0x296/0x330 [ 86.687602][ T4360] ? look_up_lock_class+0x71/0x110 [ 86.697357][ T4360] ? add_chain_block+0x940/0x940 [ 86.703473][ T4360] ? lockdep_lock+0xf1/0x1f0 [ 86.709712][ T4360] ? __lock_acquire+0x12e8/0x7d10 [ 86.717976][ T4360] ? mark_lock+0x94/0x320 [ 86.723539][ T4360] __lock_acquire+0x2c42/0x7d10 [ 86.730259][ T4360] ? verify_lock_unused+0x140/0x140 [ 86.739052][ T4360] ? verify_lock_unused+0x140/0x140 [ 86.746913][ T4360] ? mark_lock+0x94/0x320 [ 86.752365][ T4360] lock_acquire+0x19e/0x400 [ 86.759199][ T4360] ? __flush_work+0xfa/0x210 [ 86.765400][ T4360] ? __lock_acquire+0x7d10/0x7d10 [ 86.772831][ T4360] ? read_lock_is_recursive+0x10/0x10 [ 86.781009][ T4360] ? start_flush_work+0x776/0x820 [ 86.786185][ T4360] __flush_work+0x116/0x210 [ 86.793067][ T4360] ? __flush_work+0xfa/0x210 [ 86.800509][ T4360] ? flush_work+0x20/0x20 [ 86.808661][ T4360] ? try_to_grab_pending+0xfa/0x7f0 [ 86.816512][ T4360] ? mark_lock+0x94/0x320 [ 86.824095][ T4360] ? lockdep_hardirqs_on_prepare+0x409/0x770 [ 86.831553][ T4360] ? lock_chain_count+0x20/0x20 [ 86.840770][ T4360] ? mark_lock+0x94/0x320 [ 86.846853][ T4360] ? __cancel_work_timer+0x36a/0x560 [ 86.853826][ T4360] __cancel_work_timer+0x3f4/0x560 [ 86.860752][ T4360] ? cancel_work_sync+0x20/0x20 [ 86.866797][ T4360] ? __cancel_work+0x1f9/0x2e0 [ 86.872917][ T4360] ? lockdep_hardirqs_on+0x94/0x140 [ 86.883109][ T4360] ? __cancel_work+0x27b/0x2e0 [ 86.888030][ T4360] ? cancel_work+0x20/0x20 [ 86.893698][ T4360] ? lock_chain_count+0x20/0x20 [ 86.901077][ T4360] hci_request_cancel_all+0xcc/0x300 [ 86.908174][ T4360] hci_dev_do_close+0x4e/0x1030 [ 86.915609][ T4360] ? _raw_spin_unlock_irqrestore+0xc1/0x120 [ 86.922602][ T4360] ? _raw_spin_unlock+0x40/0x40 [ 86.931493][ T4360] hci_rfkill_set_block+0x10a/0x190 [ 86.938076][ T4360] ? rcu_lock_release+0x20/0x20 [ 86.943429][ T4360] rfkill_set_block+0x1c9/0x3d0 [ 86.948957][ T4360] rfkill_fop_write+0x452/0x560 [ 86.953947][ T4360] ? rfkill_fop_read+0x520/0x520 [ 86.962042][ T4360] ? common_file_perm+0xc0/0x1c0 [ 86.968515][ T4360] ? fsnotify_perm+0x5d/0x560 [ 86.975379][ T4360] ? security_file_permission+0x75/0xa0 [ 86.983761][ T4360] ? rfkill_fop_read+0x520/0x520 [ 86.990167][ T4360] vfs_write+0x30b/0xd60 [ 86.996106][ T4360] ? file_end_write+0x250/0x250 [ 87.001753][ T4360] ? __context_tracking_exit+0x4c/0x80 [ 87.010110][ T4360] ? __lock_acquire+0x7d10/0x7d10 [ 87.016191][ T4360] ? __fdget_pos+0x1e2/0x370 [ 87.022657][ T4360] ksys_write+0x152/0x260 [ 87.028635][ T4360] ? __ia32_sys_read+0x80/0x80 [ 87.035161][ T4360] ? lockdep_hardirqs_on+0x94/0x140 [ 87.041106][ T4360] do_syscall_64+0x4c/0xa0 [ 87.046313][ T4360] ? clear_bhb_loop+0x30/0x80 [ 87.052092][ T4360] ? clear_bhb_loop+0x30/0x80 [ 87.057734][ T4360] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 87.064677][ T4360] RIP: 0033:0x7efd175cee59 [ 87.069408][ T4360] 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 [ 87.094339][ T4360] RSP: 002b:00007ffdd719ffe8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 87.104712][ T4360] RAX: ffffffffffffffda RBX: 00007efd17847fa0 RCX: 00007efd175cee59 [ 87.114747][ T4360] RDX: 0000000000000008 RSI: 0000200000000040 RDI: 0000000000000003 [ 87.123732][ T4360] RBP: 00007efd17664d6f R08: 0000000000000000 R09: 0000000000000000 [ 87.134714][ T4360] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 87.148453][ T4360] R13: 00007efd17847fac R14: 00007efd17847fa0 R15: 00007efd17847fa0 [ 87.162368][ T4360] [ 87.211303][ T4269] Bluetooth: hci0: command 0x040f tx timeout