Warning: Permanently added '10.128.1.94' (ED25519) to the list of known hosts. 2026/05/30 17:46:09 parsed 1 programs [ 53.047179][ T4199] cgroup: Unknown subsys name 'net' [ 53.174218][ T4199] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size = 127995904 bytes [ 54.371200][ T4199] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k FS [ 56.788107][ T4254] chnl_net:caif_netlink_parms(): no params data found [ 56.844881][ T4254] bridge0: port 1(bridge_slave_0) entered blocking state [ 56.852505][ T4254] bridge0: port 1(bridge_slave_0) entered disabled state [ 56.860809][ T4254] device bridge_slave_0 entered promiscuous mode [ 56.869940][ T4254] bridge0: port 2(bridge_slave_1) entered blocking state [ 56.877040][ T4254] bridge0: port 2(bridge_slave_1) entered disabled state [ 56.885303][ T4254] device bridge_slave_1 entered promiscuous mode [ 56.908615][ T4254] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 56.921208][ T4254] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 56.949090][ T4254] team0: Port device team_slave_0 added [ 56.956679][ T4254] team0: Port device team_slave_1 added [ 56.977835][ T4254] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 56.986011][ T4254] 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. [ 57.013214][ T4254] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 57.026128][ T4254] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 57.034288][ T4254] 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. [ 57.061413][ T4254] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 57.098380][ T4254] device hsr_slave_0 entered promiscuous mode [ 57.106274][ T4254] device hsr_slave_1 entered promiscuous mode [ 57.229251][ T4254] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 57.240415][ T4254] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 57.250407][ T4254] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 57.259476][ T4254] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 57.321002][ T4254] 8021q: adding VLAN 0 to HW filter on device bond0 [ 57.334067][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 57.344115][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 57.354749][ T4254] 8021q: adding VLAN 0 to HW filter on device team0 [ 57.369278][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 57.378496][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 57.391747][ T144] bridge0: port 1(bridge_slave_0) entered blocking state [ 57.402378][ T144] bridge0: port 1(bridge_slave_0) entered forwarding state [ 57.438476][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 57.446826][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 57.455674][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 57.467756][ T144] bridge0: port 2(bridge_slave_1) entered blocking state [ 57.474862][ T144] bridge0: port 2(bridge_slave_1) entered forwarding state [ 57.490493][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 57.498963][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 57.527308][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 57.536273][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 57.545496][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 57.554668][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 57.572815][ T4254] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 57.584707][ T4254] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 57.593583][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 57.672958][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 57.680644][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 57.692477][ T4254] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 57.708011][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 57.724429][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 57.733437][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 57.741867][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 57.751922][ T4254] device veth0_vlan entered promiscuous mode [ 57.762522][ T4254] device veth1_vlan entered promiscuous mode [ 57.779029][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 57.787007][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 57.795457][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 57.805740][ T4254] device veth0_macvtap entered promiscuous mode [ 57.815385][ T4254] device veth1_macvtap entered promiscuous mode [ 57.829183][ T4254] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 57.840413][ T4254] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 57.847676][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 57.856802][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 57.865968][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 57.876316][ T4254] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 57.886119][ T4254] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 57.895035][ T4254] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 57.904864][ T4254] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 57.974244][ T4254] syz-executor (4254) used greatest stack depth: 20752 bytes left [ 58.039043][ T144] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 58.049302][ T144] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 58.060182][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 58.096296][ T9] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 58.105061][ T9] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 58.113186][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2026/05/30 17:46:17 executed programs: 0 [ 59.334954][ T4303] chnl_net:caif_netlink_parms(): no params data found [ 59.389771][ T4303] bridge0: port 1(bridge_slave_0) entered blocking state [ 59.396903][ T4303] bridge0: port 1(bridge_slave_0) entered disabled state [ 59.405322][ T4303] device bridge_slave_0 entered promiscuous mode [ 59.413779][ T4303] bridge0: port 2(bridge_slave_1) entered blocking state [ 59.421397][ T4303] bridge0: port 2(bridge_slave_1) entered disabled state [ 59.429304][ T4303] device bridge_slave_1 entered promiscuous mode [ 59.451749][ T4303] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 59.463086][ T4303] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 59.489409][ T4303] team0: Port device team_slave_0 added [ 59.497048][ T4303] team0: Port device team_slave_1 added [ 59.516883][ T4303] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 59.524032][ T4303] 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. [ 59.550225][ T4303] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 59.562607][ T4303] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 59.569967][ T4303] 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. [ 59.596801][ T4303] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 59.630472][ T4303] device hsr_slave_0 entered promiscuous mode [ 59.638042][ T4303] device hsr_slave_1 entered promiscuous mode [ 59.644715][ T4303] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 59.652703][ T4303] Cannot create hsr debugfs directory [ 59.736236][ T4303] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 61.280361][ T4272] Bluetooth: hci0: command 0x0409 tx timeout [ 63.359809][ T4314] Bluetooth: hci0: command 0x041b tx timeout [ 63.535463][ T4303] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 63.575053][ T4303] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 63.645819][ T4303] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 63.723161][ T4303] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 63.731573][ T4303] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 63.740047][ T4303] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 63.748228][ T4303] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 63.791349][ T4303] 8021q: adding VLAN 0 to HW filter on device bond0 [ 63.802710][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 63.810727][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 63.820484][ T4303] 8021q: adding VLAN 0 to HW filter on device team0 [ 63.829056][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 63.838423][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 63.847070][ T9] bridge0: port 1(bridge_slave_0) entered blocking state [ 63.854135][ T9] bridge0: port 1(bridge_slave_0) entered forwarding state [ 63.862573][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 63.894076][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 63.903620][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 63.912270][ T9] bridge0: port 2(bridge_slave_1) entered blocking state [ 63.919295][ T9] bridge0: port 2(bridge_slave_1) entered forwarding state [ 63.928643][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 63.938230][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 63.946867][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 63.955646][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 63.964212][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 63.972985][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 63.983712][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 63.991453][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 64.000261][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 64.023790][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 64.033485][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 64.043406][ T4303] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 64.133989][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 64.141489][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 64.153569][ T4303] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 64.178447][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 64.187215][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 64.220706][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 64.228754][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 64.237596][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 64.246528][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 64.256384][ T4303] device veth0_vlan entered promiscuous mode [ 64.267108][ T4303] device veth1_vlan entered promiscuous mode [ 64.297174][ T4303] device veth0_macvtap entered promiscuous mode [ 64.305169][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 64.313605][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 64.321632][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 64.331265][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 64.340051][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 64.349878][ T4303] device veth1_macvtap entered promiscuous mode [ 64.374394][ T4303] batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3e) already exists on: batadv_slave_0 [ 64.385164][ T4303] batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems! [ 64.396023][ T4303] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 64.404319][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 64.412634][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 64.422595][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 64.442599][ T4303] batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3f) already exists on: batadv_slave_1 [ 64.453036][ T4303] batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems! [ 64.464881][ T4303] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 64.473131][ T527] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 64.481748][ T527] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 64.492726][ T4303] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 64.501493][ T4303] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 64.510524][ T4303] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 64.519205][ T4303] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 64.577949][ T154] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 64.590258][ T154] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 64.612728][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 64.633087][ T9] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 64.643065][ T9] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 64.651104][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 64.680081][ T3077] device hsr_slave_0 left promiscuous mode [ 64.686683][ T3077] device hsr_slave_1 left promiscuous mode [ 64.700860][ T3077] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 64.708273][ T3077] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 64.718442][ T3077] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 64.725891][ T3077] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 64.733758][ T3077] device bridge_slave_1 left promiscuous mode [ 64.740401][ T3077] bridge0: port 2(bridge_slave_1) entered disabled state [ 64.753537][ T3077] device bridge_slave_0 left promiscuous mode [ 64.760572][ T3077] bridge0: port 1(bridge_slave_0) entered disabled state [ 64.776588][ T3077] device veth1_macvtap left promiscuous mode [ 64.782809][ T3077] device veth0_macvtap left promiscuous mode [ 64.788817][ T3077] device veth1_vlan left promiscuous mode [ 64.795267][ T3077] device veth0_vlan left promiscuous mode [ 64.926389][ T3077] team0 (unregistering): Port device team_slave_1 removed [ 64.941364][ T3077] team0 (unregistering): Port device team_slave_0 removed [ 64.953560][ T3077] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 64.967534][ T3077] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 65.013878][ T3077] bond0 (unregistering): Released all slaves [ 65.095346][ T4322] [ 65.097692][ T4322] ====================================================== [ 65.104696][ T4322] WARNING: possible circular locking dependency detected [ 65.111714][ T4322] syzkaller #0 Not tainted [ 65.116118][ T4322] ------------------------------------------------------ [ 65.123126][ T4322] syz.0.17/4322 is trying to acquire lock: [ 65.128915][ T4322] ffff888078688c28 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}, at: __flush_work+0xfa/0x210 [ 65.139976][ T4322] [ 65.139976][ T4322] but task is already holding lock: [ 65.147330][ T4322] ffffffff8d6c65a8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x18b/0x560 [ 65.156979][ T4322] [ 65.156979][ T4322] which lock already depends on the new lock. [ 65.156979][ T4322] [ 65.167369][ T4322] [ 65.167369][ T4322] the existing dependency chain (in reverse order) is: [ 65.176369][ T4322] [ 65.176369][ T4322] -> #4 (rfkill_global_mutex){+.+.}-{3:3}: [ 65.184354][ T4322] __mutex_lock_common+0x1e3/0x2400 [ 65.190071][ T4322] mutex_lock_nested+0x17/0x20 [ 65.195354][ T4322] rfkill_register+0x33/0x980 [ 65.200550][ T4322] hci_register_dev+0x452/0x970 [ 65.205920][ T4322] vhci_create_device+0x32c/0x5c0 [ 65.211464][ T4322] vhci_write+0x391/0x450 [ 65.216315][ T4322] vfs_write+0x745/0xd60 [ 65.221079][ T4322] ksys_write+0x152/0x260 [ 65.225928][ T4322] do_syscall_64+0x4c/0xa0 [ 65.230860][ T4322] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 65.237269][ T4322] [ 65.237269][ T4322] -> #3 (&data->open_mutex){+.+.}-{3:3}: [ 65.245079][ T4322] __mutex_lock_common+0x1e3/0x2400 [ 65.250802][ T4322] mutex_lock_nested+0x17/0x20 [ 65.256085][ T4322] vhci_send_frame+0x88/0x100 [ 65.261281][ T4322] hci_send_frame+0x1a9/0x2e0 [ 65.266476][ T4322] hci_tx_work+0x9f9/0x1710 [ 65.271498][ T4322] process_one_work+0x85f/0x1010 [ 65.276954][ T4322] worker_thread+0xaa6/0x1290 [ 65.282150][ T4322] kthread+0x436/0x520 [ 65.286738][ T4322] ret_from_fork+0x1f/0x30 [ 65.291674][ T4322] [ 65.291674][ T4322] -> #2 ((work_completion)(&hdev->tx_work)){+.+.}-{0:0}: [ 65.300881][ T4322] __flush_work+0x116/0x210 [ 65.305900][ T4322] hci_dev_do_close+0x1e7/0x1030 [ 65.311358][ T4322] hci_unregister_dev+0x2d7/0x580 [ 65.316903][ T4322] vhci_release+0x73/0xc0 [ 65.321753][ T4322] __fput+0x234/0x930 [ 65.326251][ T4322] task_work_run+0x125/0x1a0 [ 65.331367][ T4322] do_exit+0x626/0x20c0 [ 65.336037][ T4322] do_group_exit+0x12e/0x300 [ 65.341141][ T4322] get_signal+0x6d6/0x12d0 [ 65.346076][ T4322] arch_do_signal_or_restart+0xe7/0x12c0 [ 65.352230][ T4322] exit_to_user_mode_loop+0x9e/0x130 [ 65.358033][ T4322] exit_to_user_mode_prepare+0xee/0x180 [ 65.364094][ T4322] syscall_exit_to_user_mode+0x16/0x40 [ 65.370071][ T4322] do_syscall_64+0x58/0xa0 [ 65.375004][ T4322] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 65.381416][ T4322] [ 65.381416][ T4322] -> #1 (&hdev->req_lock){+.+.}-{3:3}: [ 65.389059][ T4322] __mutex_lock_common+0x1e3/0x2400 [ 65.394776][ T4322] mutex_lock_nested+0x17/0x20 [ 65.400057][ T4322] bg_scan_update+0x44/0x3b0 [ 65.405167][ T4322] process_one_work+0x85f/0x1010 [ 65.410623][ T4322] worker_thread+0xaa6/0x1290 [ 65.415818][ T4322] kthread+0x436/0x520 [ 65.420404][ T4322] ret_from_fork+0x1f/0x30 [ 65.425342][ T4322] [ 65.425342][ T4322] -> #0 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}: [ 65.435154][ T4322] __lock_acquire+0x2c42/0x7d10 [ 65.440526][ T4322] lock_acquire+0x19e/0x400 [ 65.445549][ T4322] __flush_work+0x116/0x210 [ 65.449914][ T13] Bluetooth: hci0: command 0x040f tx timeout [ 65.450566][ T4322] __cancel_work_timer+0x3f4/0x560 [ 65.462129][ T4322] hci_request_cancel_all+0xcc/0x300 [ 65.467933][ T4322] hci_dev_do_close+0x4e/0x1030 [ 65.473303][ T4322] hci_rfkill_set_block+0x10a/0x190 [ 65.479022][ T4322] rfkill_set_block+0x1c9/0x3d0 [ 65.484394][ T4322] rfkill_fop_write+0x452/0x560 [ 65.489758][ T4322] vfs_write+0x30b/0xd60 [ 65.494518][ T4322] ksys_write+0x152/0x260 [ 65.499363][ T4322] do_syscall_64+0x4c/0xa0 [ 65.504296][ T4322] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 65.510705][ T4322] [ 65.510705][ T4322] other info that might help us debug this: [ 65.510705][ T4322] [ 65.520926][ T4322] Chain exists of: [ 65.520926][ T4322] (work_completion)(&hdev->bg_scan_update) --> &data->open_mutex --> rfkill_global_mutex [ 65.520926][ T4322] [ 65.536643][ T4322] Possible unsafe locking scenario: [ 65.536643][ T4322] [ 65.544080][ T4322] CPU0 CPU1 [ 65.549435][ T4322] ---- ---- [ 65.554793][ T4322] lock(rfkill_global_mutex); [ 65.559550][ T4322] lock(&data->open_mutex); [ 65.566652][ T4322] lock(rfkill_global_mutex); [ 65.573929][ T4322] lock((work_completion)(&hdev->bg_scan_update)); [ 65.580512][ T4322] [ 65.580512][ T4322] *** DEADLOCK *** [ 65.580512][ T4322] [ 65.588644][ T4322] 1 lock held by syz.0.17/4322: [ 65.593482][ T4322] #0: ffffffff8d6c65a8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x18b/0x560 [ 65.603572][ T4322] [ 65.603572][ T4322] stack backtrace: [ 65.609467][ T4322] CPU: 1 PID: 4322 Comm: syz.0.17 Not tainted syzkaller #0 [ 65.616657][ T4322] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 65.626714][ T4322] Call Trace: [ 65.629986][ T4322] [ 65.632910][ T4322] dump_stack_lvl+0x188/0x250 [ 65.637586][ T4322] ? load_image+0x400/0x400 [ 65.642085][ T4322] ? show_regs_print_info+0x20/0x20 [ 65.647295][ T4322] ? print_circular_bug+0x12b/0x1a0 [ 65.652494][ T4322] check_noncircular+0x296/0x330 [ 65.657427][ T4322] ? look_up_lock_class+0x71/0x110 [ 65.662539][ T4322] ? add_chain_block+0x940/0x940 [ 65.667472][ T4322] ? lockdep_lock+0xf1/0x1f0 [ 65.672061][ T4322] ? __lock_acquire+0x12e8/0x7d10 [ 65.677088][ T4322] ? mark_lock+0x94/0x320 [ 65.681416][ T4322] __lock_acquire+0x2c42/0x7d10 [ 65.686283][ T4322] ? verify_lock_unused+0x140/0x140 [ 65.691481][ T4322] ? verify_lock_unused+0x140/0x140 [ 65.696681][ T4322] ? mark_lock+0x94/0x320 [ 65.701009][ T4322] lock_acquire+0x19e/0x400 [ 65.705519][ T4322] ? __flush_work+0xfa/0x210 [ 65.710114][ T4322] ? __lock_acquire+0x7d10/0x7d10 [ 65.715138][ T4322] ? read_lock_is_recursive+0x10/0x10 [ 65.720511][ T4322] ? start_flush_work+0x776/0x820 [ 65.725535][ T4322] __flush_work+0x116/0x210 [ 65.730038][ T4322] ? __flush_work+0xfa/0x210 [ 65.734627][ T4322] ? flush_work+0x20/0x20 [ 65.738955][ T4322] ? try_to_grab_pending+0xfa/0x7f0 [ 65.744148][ T4322] ? mark_lock+0x94/0x320 [ 65.748472][ T4322] ? lockdep_hardirqs_on_prepare+0x409/0x770 [ 65.754453][ T4322] ? lock_chain_count+0x20/0x20 [ 65.759306][ T4322] ? mark_lock+0x94/0x320 [ 65.763632][ T4322] ? __cancel_work_timer+0x36a/0x560 [ 65.768912][ T4322] __cancel_work_timer+0x3f4/0x560 [ 65.774020][ T4322] ? cancel_work_sync+0x20/0x20 [ 65.778866][ T4322] ? __cancel_work+0x1f9/0x2e0 [ 65.783625][ T4322] ? lockdep_hardirqs_on+0x94/0x140 [ 65.788826][ T4322] ? __cancel_work+0x27b/0x2e0 [ 65.793592][ T4322] ? cancel_work+0x20/0x20 [ 65.798010][ T4322] ? lock_chain_count+0x20/0x20 [ 65.802862][ T4322] hci_request_cancel_all+0xcc/0x300 [ 65.808150][ T4322] hci_dev_do_close+0x4e/0x1030 [ 65.812997][ T4322] ? _raw_spin_unlock_irqrestore+0xc1/0x120 [ 65.818888][ T4322] ? _raw_spin_unlock+0x40/0x40 [ 65.823736][ T4322] hci_rfkill_set_block+0x10a/0x190 [ 65.828942][ T4322] ? rcu_lock_release+0x20/0x20 [ 65.833793][ T4322] rfkill_set_block+0x1c9/0x3d0 [ 65.838645][ T4322] rfkill_fop_write+0x452/0x560 [ 65.843493][ T4322] ? rfkill_fop_read+0x520/0x520 [ 65.848435][ T4322] ? common_file_perm+0xc0/0x1c0 [ 65.853377][ T4322] ? fsnotify_perm+0x5d/0x560 [ 65.858056][ T4322] ? security_file_permission+0x75/0xa0 [ 65.863597][ T4322] ? rfkill_fop_read+0x520/0x520 [ 65.868531][ T4322] vfs_write+0x30b/0xd60 [ 65.872774][ T4322] ? file_end_write+0x250/0x250 [ 65.877621][ T4322] ? __context_tracking_exit+0x4c/0x80 [ 65.883085][ T4322] ? __lock_acquire+0x7d10/0x7d10 [ 65.888108][ T4322] ? __fdget_pos+0x1e2/0x370 [ 65.892697][ T4322] ksys_write+0x152/0x260 [ 65.897024][ T4322] ? __ia32_sys_read+0x80/0x80 [ 65.901783][ T4322] ? lockdep_hardirqs_on+0x94/0x140 [ 65.906980][ T4322] do_syscall_64+0x4c/0xa0 [ 65.911393][ T4322] ? clear_bhb_loop+0x30/0x80 [ 65.916066][ T4322] ? clear_bhb_loop+0x30/0x80 [ 65.920740][ T4322] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 65.926647][ T4322] RIP: 0033:0x7f31bee2ce59 [ 65.931062][ T4322] 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 [ 65.950657][ T4322] RSP: 002b:00007fffcab81428 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 65.959067][ T4322] RAX: ffffffffffffffda RBX: 00007f31bf0a5fa0 RCX: 00007f31bee2ce59 [ 65.967036][ T4322] RDX: 0000000000000008 RSI: 0000200000000000 RDI: 0000000000000003 [ 65.974998][ T4322] RBP: 00007f31beec2d6f R08: 0000000000000000 R09: 0000000000000000 [ 65.982967][ T4322] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 65.990911][ T4322] R13: 00007f31bf0a5fac R14: 00007f31bf0a5fa0 R15: 00007f31bf0a5fa0 [ 65.998858][ T4322]