Warning: Permanently added '10.128.0.57' (ED25519) to the list of known hosts. 2026/01/01 05:45:00 parsed 1 programs [ 54.881783][ T4189] cgroup: Unknown subsys name 'net' [ 54.985229][ T4189] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size = 127995904 bytes [ 56.168435][ T4189] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k FS [ 58.330365][ T4214] chnl_net:caif_netlink_parms(): no params data found [ 58.393875][ T4214] bridge0: port 1(bridge_slave_0) entered blocking state [ 58.401661][ T4214] bridge0: port 1(bridge_slave_0) entered disabled state [ 58.409820][ T4214] device bridge_slave_0 entered promiscuous mode [ 58.419744][ T4214] bridge0: port 2(bridge_slave_1) entered blocking state [ 58.427185][ T4214] bridge0: port 2(bridge_slave_1) entered disabled state [ 58.435638][ T4214] device bridge_slave_1 entered promiscuous mode [ 58.464182][ T4214] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 58.477062][ T4214] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 58.506925][ T4214] team0: Port device team_slave_0 added [ 58.514838][ T4214] team0: Port device team_slave_1 added [ 58.543203][ T4214] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 58.550179][ T4214] 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. [ 58.576497][ T4214] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 58.589526][ T4214] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 58.596521][ T4214] 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. [ 58.622475][ T4214] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 58.663233][ T4214] device hsr_slave_0 entered promiscuous mode [ 58.670164][ T4214] device hsr_slave_1 entered promiscuous mode [ 58.807192][ T4214] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 58.820492][ T4214] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 58.831260][ T4214] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 58.843024][ T4214] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 58.877709][ T4214] bridge0: port 2(bridge_slave_1) entered blocking state [ 58.885077][ T4214] bridge0: port 2(bridge_slave_1) entered forwarding state [ 58.893190][ T4214] bridge0: port 1(bridge_slave_0) entered blocking state [ 58.900275][ T4214] bridge0: port 1(bridge_slave_0) entered forwarding state [ 58.967632][ T4214] 8021q: adding VLAN 0 to HW filter on device bond0 [ 58.984820][ T3061] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 58.995389][ T3061] bridge0: port 1(bridge_slave_0) entered disabled state [ 59.005802][ T3061] bridge0: port 2(bridge_slave_1) entered disabled state [ 59.020025][ T4214] 8021q: adding VLAN 0 to HW filter on device team0 [ 59.033520][ T3061] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 59.042398][ T3061] bridge0: port 1(bridge_slave_0) entered blocking state [ 59.049481][ T3061] bridge0: port 1(bridge_slave_0) entered forwarding state [ 59.071403][ T1438] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 59.080426][ T1438] bridge0: port 2(bridge_slave_1) entered blocking state [ 59.087640][ T1438] bridge0: port 2(bridge_slave_1) entered forwarding state [ 59.101104][ T1438] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 59.115880][ T1438] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 59.126467][ T1438] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 59.144798][ T1438] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 59.154612][ T1438] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 59.166254][ T4214] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 59.296463][ T1438] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 59.304963][ T1438] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 59.318956][ T4214] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 59.343127][ T1438] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 59.353102][ T1438] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 59.370318][ T4214] device veth0_vlan entered promiscuous mode [ 59.377764][ T1438] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 59.386769][ T1438] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 59.395432][ T1438] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 59.405924][ T1438] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 59.416473][ T4214] device veth1_vlan entered promiscuous mode [ 59.445452][ T1438] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 59.466935][ T1438] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 59.476109][ T1438] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 59.486837][ T1438] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 59.497403][ T4214] device veth0_macvtap entered promiscuous mode [ 59.512987][ T4214] device veth1_macvtap entered promiscuous mode [ 59.526189][ T4214] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 59.534429][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 59.543610][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 59.551707][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 59.560095][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 59.572036][ T4214] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 59.579311][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 59.588355][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 59.599407][ T4214] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 59.608461][ T4214] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 59.617640][ T4214] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 59.626752][ T4214] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 59.724948][ T4214] syz-executor (4214) used greatest stack depth: 20448 bytes left [ 59.857860][ T1438] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 59.884635][ T1438] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 59.894403][ T1438] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 59.905559][ T144] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 59.913575][ T144] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 59.929898][ T3061] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2026/01/01 05:45:08 executed programs: 0 [ 61.835617][ T4285] chnl_net:caif_netlink_parms(): no params data found [ 61.884367][ T4285] bridge0: port 1(bridge_slave_0) entered blocking state [ 61.891523][ T4285] bridge0: port 1(bridge_slave_0) entered disabled state [ 61.899024][ T4285] device bridge_slave_0 entered promiscuous mode [ 61.906625][ T4285] bridge0: port 2(bridge_slave_1) entered blocking state [ 61.913896][ T4285] bridge0: port 2(bridge_slave_1) entered disabled state [ 61.922221][ T4285] device bridge_slave_1 entered promiscuous mode [ 61.955607][ T154] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 61.970328][ T4285] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 61.984659][ T4285] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 62.005287][ T4285] team0: Port device team_slave_0 added [ 62.013147][ T4285] team0: Port device team_slave_1 added [ 62.028070][ T4285] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 62.035040][ T4285] 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. [ 62.061201][ T4285] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 62.072964][ T4285] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 62.079918][ T4285] 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. [ 62.106077][ T4285] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 62.130499][ T4285] device hsr_slave_0 entered promiscuous mode [ 62.138175][ T4285] device hsr_slave_1 entered promiscuous mode [ 62.145126][ T4285] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 62.152990][ T4285] Cannot create hsr debugfs directory [ 63.721298][ T4234] Bluetooth: hci0: command 0x0409 tx timeout [ 65.006407][ T154] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 65.044940][ T154] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 65.116813][ T154] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 65.800974][ T7] Bluetooth: hci0: command 0x041b tx timeout [ 65.968370][ T4285] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 65.977927][ T4285] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 65.989730][ T4285] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 65.999274][ T4285] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 66.058874][ T4285] 8021q: adding VLAN 0 to HW filter on device bond0 [ 66.070452][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 66.081057][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 66.113366][ T4285] 8021q: adding VLAN 0 to HW filter on device team0 [ 66.124594][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 66.134083][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 66.143404][ T144] bridge0: port 1(bridge_slave_0) entered blocking state [ 66.150566][ T144] bridge0: port 1(bridge_slave_0) entered forwarding state [ 66.158434][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 66.172573][ T1438] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 66.182051][ T1438] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 66.190432][ T1438] bridge0: port 2(bridge_slave_1) entered blocking state [ 66.197707][ T1438] bridge0: port 2(bridge_slave_1) entered forwarding state [ 66.210392][ T1438] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 66.222417][ T1438] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 66.235120][ T394] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 66.244430][ T394] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 66.276965][ T4285] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 66.289011][ T4285] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 66.302134][ T394] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 66.309984][ T394] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 66.318792][ T394] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 66.328407][ T394] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 66.337173][ T394] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 66.346079][ T394] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 66.354606][ T394] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 66.368532][ T394] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 66.457691][ T394] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 66.465780][ T394] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 66.502146][ T4285] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 66.517837][ T394] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 66.527699][ T394] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 66.562813][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 66.572178][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 66.580349][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 66.588722][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 66.598949][ T4285] device veth0_vlan entered promiscuous mode [ 66.626888][ T4285] device veth1_vlan entered promiscuous mode [ 66.643426][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 66.651884][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 66.660149][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 66.669178][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 66.680171][ T4285] device veth0_macvtap entered promiscuous mode [ 66.690629][ T4285] device veth1_macvtap entered promiscuous mode [ 66.708545][ T4285] batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3e) already exists on: batadv_slave_0 [ 66.719323][ T4285] batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems! [ 66.731273][ T4285] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 66.750278][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 66.759243][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 66.767753][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 66.777179][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 66.789783][ T4285] batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3f) already exists on: batadv_slave_1 [ 66.800602][ T4285] batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems! [ 66.811726][ T4285] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 66.825084][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 66.833949][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 66.849651][ T4285] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 66.859247][ T4285] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 66.868775][ T4285] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 66.877517][ T4285] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 66.930304][ T154] device hsr_slave_0 left promiscuous mode [ 66.938600][ T154] device hsr_slave_1 left promiscuous mode [ 66.945500][ T154] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 66.953185][ T154] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 66.961374][ T154] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 66.968757][ T154] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 66.976446][ T154] device bridge_slave_1 left promiscuous mode [ 66.983226][ T154] bridge0: port 2(bridge_slave_1) entered disabled state [ 66.995891][ T154] device bridge_slave_0 left promiscuous mode [ 67.002369][ T154] bridge0: port 1(bridge_slave_0) entered disabled state [ 67.019388][ T154] device veth1_macvtap left promiscuous mode [ 67.026011][ T154] device veth0_macvtap left promiscuous mode [ 67.032649][ T154] device veth1_vlan left promiscuous mode [ 67.038533][ T154] device veth0_vlan left promiscuous mode [ 67.168459][ T154] team0 (unregistering): Port device team_slave_1 removed [ 67.179280][ T154] team0 (unregistering): Port device team_slave_0 removed [ 67.191599][ T154] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 67.203527][ T154] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 67.247381][ T154] bond0 (unregistering): Released all slaves [ 67.310082][ T394] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 67.328051][ T394] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 67.335075][ T144] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 67.338541][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 67.352872][ T144] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 67.365840][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 67.485192][ T4352] [ 67.487591][ T4352] ====================================================== [ 67.494623][ T4352] WARNING: possible circular locking dependency detected [ 67.501653][ T4352] syzkaller #0 Not tainted [ 67.506083][ T4352] ------------------------------------------------------ [ 67.513109][ T4352] syz.0.17/4352 is trying to acquire lock: [ 67.518923][ T4352] ffff888025820c28 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}, at: __flush_work+0xc1/0x1b0 [ 67.529974][ T4352] [ 67.529974][ T4352] but task is already holding lock: [ 67.537434][ T4352] ffffffff8d4ba7e8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x19e/0x560 [ 67.547089][ T4352] [ 67.547089][ T4352] which lock already depends on the new lock. [ 67.547089][ T4352] [ 67.557486][ T4352] [ 67.557486][ T4352] the existing dependency chain (in reverse order) is: [ 67.566589][ T4352] [ 67.566589][ T4352] -> #4 (rfkill_global_mutex){+.+.}-{3:3}: [ 67.574590][ T4352] __mutex_lock_common+0x1eb/0x2390 [ 67.580404][ T4352] mutex_lock_nested+0x17/0x20 [ 67.585686][ T4352] rfkill_register+0x33/0x8a0 [ 67.590894][ T4352] hci_register_dev+0x452/0x970 [ 67.596359][ T4352] vhci_create_device+0x32c/0x5c0 [ 67.601901][ T4352] vhci_write+0x391/0x450 [ 67.606902][ T4352] vfs_write+0x712/0xd00 [ 67.611661][ T4352] ksys_write+0x14d/0x250 [ 67.616598][ T4352] do_syscall_64+0x4c/0xa0 [ 67.621633][ T4352] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 67.628044][ T4352] [ 67.628044][ T4352] -> #3 (&data->open_mutex){+.+.}-{3:3}: [ 67.635854][ T4352] __mutex_lock_common+0x1eb/0x2390 [ 67.641567][ T4352] mutex_lock_nested+0x17/0x20 [ 67.646937][ T4352] vhci_send_frame+0x88/0x100 [ 67.652128][ T4352] hci_send_frame+0x1a9/0x2e0 [ 67.657319][ T4352] hci_tx_work+0x9f9/0x1710 [ 67.662335][ T4352] process_one_work+0x863/0x1000 [ 67.667878][ T4352] worker_thread+0xaa8/0x12a0 [ 67.673187][ T4352] kthread+0x436/0x520 [ 67.677869][ T4352] ret_from_fork+0x1f/0x30 [ 67.683004][ T4352] [ 67.683004][ T4352] -> #2 ((work_completion)(&hdev->tx_work)){+.+.}-{0:0}: [ 67.692203][ T4352] __flush_work+0xdd/0x1b0 [ 67.697139][ T4352] hci_dev_do_close+0x1e7/0x1030 [ 67.702591][ T4352] hci_unregister_dev+0x2d7/0x580 [ 67.708127][ T4352] vhci_release+0x73/0xc0 [ 67.712968][ T4352] __fput+0x234/0x930 [ 67.717475][ T4352] task_work_run+0x125/0x1a0 [ 67.722579][ T4352] do_exit+0x61e/0x20a0 [ 67.727254][ T4352] do_group_exit+0x12e/0x300 [ 67.732357][ T4352] get_signal+0x6ca/0x12c0 [ 67.737285][ T4352] arch_do_signal_or_restart+0xc1/0x1300 [ 67.743434][ T4352] exit_to_user_mode_loop+0x9e/0x130 [ 67.749235][ T4352] exit_to_user_mode_prepare+0xee/0x180 [ 67.755294][ T4352] syscall_exit_to_user_mode+0x16/0x40 [ 67.761271][ T4352] do_syscall_64+0x58/0xa0 [ 67.766201][ T4352] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 67.772616][ T4352] [ 67.772616][ T4352] -> #1 (&hdev->req_lock){+.+.}-{3:3}: [ 67.780251][ T4352] __mutex_lock_common+0x1eb/0x2390 [ 67.785964][ T4352] mutex_lock_nested+0x17/0x20 [ 67.791251][ T4352] bg_scan_update+0x44/0x3b0 [ 67.796455][ T4352] process_one_work+0x863/0x1000 [ 67.801906][ T4352] worker_thread+0xaa8/0x12a0 [ 67.807098][ T4352] kthread+0x436/0x520 [ 67.811694][ T4352] ret_from_fork+0x1f/0x30 [ 67.816626][ T4352] [ 67.816626][ T4352] -> #0 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}: [ 67.826429][ T4352] __lock_acquire+0x2c33/0x7c60 [ 67.831876][ T4352] lock_acquire+0x197/0x3f0 [ 67.836896][ T4352] __flush_work+0xdd/0x1b0 [ 67.841826][ T4352] __cancel_work_timer+0x3ac/0x520 [ 67.847448][ T4352] hci_request_cancel_all+0xcc/0x300 [ 67.853248][ T4352] hci_dev_do_close+0x4e/0x1030 [ 67.858703][ T4352] hci_rfkill_set_block+0x10a/0x190 [ 67.864502][ T4352] rfkill_set_block+0x1c6/0x420 [ 67.869913][ T4352] rfkill_fop_write+0x458/0x560 [ 67.875273][ T4352] vfs_write+0x300/0xd00 [ 67.880032][ T4352] ksys_write+0x14d/0x250 [ 67.884873][ T4352] do_syscall_64+0x4c/0xa0 [ 67.889803][ T4352] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 67.896212][ T4352] [ 67.896212][ T4352] other info that might help us debug this: [ 67.896212][ T4352] [ 67.906429][ T4352] Chain exists of: [ 67.906429][ T4352] (work_completion)(&hdev->bg_scan_update) --> &data->open_mutex --> rfkill_global_mutex [ 67.906429][ T4352] [ 67.922142][ T4352] Possible unsafe locking scenario: [ 67.922142][ T4352] [ 67.929581][ T4352] CPU0 CPU1 [ 67.934936][ T4352] ---- ---- [ 67.940290][ T4352] lock(rfkill_global_mutex); [ 67.945043][ T4352] lock(&data->open_mutex); [ 67.952145][ T4352] lock(rfkill_global_mutex); [ 67.959506][ T4352] lock((work_completion)(&hdev->bg_scan_update)); [ 67.966260][ T4352] [ 67.966260][ T4352] *** DEADLOCK *** [ 67.966260][ T4352] [ 67.974392][ T4352] 1 lock held by syz.0.17/4352: [ 67.979232][ T4352] #0: ffffffff8d4ba7e8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x19e/0x560 [ 67.989399][ T4352] [ 67.989399][ T4352] stack backtrace: [ 67.995284][ T4352] CPU: 1 PID: 4352 Comm: syz.0.17 Not tainted syzkaller #0 [ 68.002477][ T4352] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 [ 68.012525][ T4352] Call Trace: [ 68.015799][ T4352] [ 68.018867][ T4352] dump_stack_lvl+0x168/0x230 [ 68.023627][ T4352] ? load_image+0x3b0/0x3b0 [ 68.028123][ T4352] ? show_regs_print_info+0x20/0x20 [ 68.033321][ T4352] ? print_circular_bug+0x12b/0x1a0 [ 68.038611][ T4352] check_noncircular+0x274/0x310 [ 68.043544][ T4352] ? add_chain_block+0x940/0x940 [ 68.048476][ T4352] ? lockdep_lock+0xdc/0x1e0 [ 68.053062][ T4352] ? __lock_acquire+0x12d9/0x7c60 [ 68.058083][ T4352] ? lockdep_lock+0x1e0/0x1e0 [ 68.062759][ T4352] ? mark_lock+0x94/0x320 [ 68.067087][ T4352] ? _find_first_zero_bit+0xce/0xf0 [ 68.072299][ T4352] __lock_acquire+0x2c33/0x7c60 [ 68.077176][ T4352] ? verify_lock_unused+0x140/0x140 [ 68.082395][ T4352] ? verify_lock_unused+0x140/0x140 [ 68.087630][ T4352] lock_acquire+0x197/0x3f0 [ 68.092145][ T4352] ? __flush_work+0xc1/0x1b0 [ 68.096734][ T4352] ? __lock_acquire+0x7c60/0x7c60 [ 68.101762][ T4352] ? read_lock_is_recursive+0x10/0x10 [ 68.107252][ T4352] ? start_flush_work+0x776/0x820 [ 68.112275][ T4352] ? _raw_spin_unlock_irqrestore+0xaa/0x100 [ 68.118256][ T4352] ? _raw_spin_unlock+0x40/0x40 [ 68.123105][ T4352] __flush_work+0xdd/0x1b0 [ 68.127515][ T4352] ? __flush_work+0xc1/0x1b0 [ 68.132098][ T4352] ? flush_work+0x20/0x20 [ 68.136641][ T4352] ? try_to_grab_pending+0xf3/0x7e0 [ 68.141853][ T4352] ? lockdep_hardirqs_off+0x70/0x100 [ 68.147144][ T4352] ? mark_lock+0x94/0x320 [ 68.151476][ T4352] ? lockdep_hardirqs_on_prepare+0x3fc/0x760 [ 68.157455][ T4352] ? lock_chain_count+0x20/0x20 [ 68.162308][ T4352] ? mark_lock+0x94/0x320 [ 68.166680][ T4352] ? __cancel_work_timer+0x331/0x520 [ 68.171973][ T4352] __cancel_work_timer+0x3ac/0x520 [ 68.177099][ T4352] ? cancel_work_sync+0x20/0x20 [ 68.181946][ T4352] ? __cancel_work+0x1f4/0x2d0 [ 68.186707][ T4352] ? lockdep_hardirqs_on+0x94/0x140 [ 68.191913][ T4352] ? __cancel_work+0x26f/0x2d0 [ 68.196758][ T4352] ? cancel_work+0x20/0x20 [ 68.201167][ T4352] ? lock_chain_count+0x20/0x20 [ 68.206205][ T4352] hci_request_cancel_all+0xcc/0x300 [ 68.211492][ T4352] hci_dev_do_close+0x4e/0x1030 [ 68.216345][ T4352] ? _raw_spin_unlock_irqrestore+0xaa/0x100 [ 68.222235][ T4352] ? _raw_spin_unlock+0x40/0x40 [ 68.227091][ T4352] hci_rfkill_set_block+0x10a/0x190 [ 68.232374][ T4352] ? rcu_lock_release+0x20/0x20 [ 68.237220][ T4352] rfkill_set_block+0x1c6/0x420 [ 68.242066][ T4352] rfkill_fop_write+0x458/0x560 [ 68.246910][ T4352] ? verify_lock_unused+0x140/0x140 [ 68.252107][ T4352] ? rfkill_fop_read+0x4b0/0x4b0 [ 68.257037][ T4352] ? common_file_perm+0xc0/0x1c0 [ 68.261970][ T4352] ? fsnotify_perm+0x5d/0x560 [ 68.266666][ T4352] ? security_file_permission+0x75/0xa0 [ 68.272206][ T4352] ? rfkill_fop_read+0x4b0/0x4b0 [ 68.277252][ T4352] vfs_write+0x300/0xd00 [ 68.281587][ T4352] ? file_end_write+0x250/0x250 [ 68.286433][ T4352] ? __context_tracking_exit+0x4c/0x80 [ 68.291982][ T4352] ? __lock_acquire+0x7c60/0x7c60 [ 68.297100][ T4352] ? __fdget_pos+0x1e2/0x370 [ 68.301687][ T4352] ksys_write+0x14d/0x250 [ 68.306013][ T4352] ? __ia32_sys_read+0x80/0x80 [ 68.310770][ T4352] ? lockdep_hardirqs_on+0x94/0x140 [ 68.315964][ T4352] do_syscall_64+0x4c/0xa0 [ 68.320372][ T4352] ? clear_bhb_loop+0x30/0x80 [ 68.325095][ T4352] ? clear_bhb_loop+0x30/0x80 [ 68.329768][ T4352] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 68.335655][ T4352] RIP: 0033:0x7fba5da06749 [ 68.340106][ T4352] Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48 [ 68.359791][ T4352] RSP: 002b:00007fff248546e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 68.368203][ T4352] RAX: ffffffffffffffda RBX: 00007fba5dc5cfa0 RCX: 00007fba5da06749 [ 68.376170][ T4352] RDX: 0000000000000008 RSI: 0000200000000040 RDI: 0000000000000003 [ 68.384135][ T4352] RBP: 00007fba5da8af91 R08: 0000000000000000 R09: 0000000000000000 [ 68.392100][ T4352] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 68.400065][ T4352] R13: 00007fba5dc5cfa0 R14: 00007fba5dc5cfa0 R15: 0000000000000003 [ 68.408035][ T4352]