Warning: Permanently added '10.128.0.124' (ED25519) to the list of known hosts. 2026/08/15 18:40:19 parsed 1 programs 2026/08/15 18:40:19 serving rpc on tcp://39215 [ 73.342615][ T4199] cgroup: Unknown subsys name 'net' [ 73.455682][ T4199] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size = 127995904 bytes [ 75.091331][ T4199] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k FS [ 77.134981][ T144] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 77.146082][ T144] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 77.157564][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 77.183436][ T154] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 77.191434][ T154] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 77.199116][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 77.817311][ T4234] chnl_net:caif_netlink_parms(): no params data found [ 77.882740][ T4234] bridge0: port 1(bridge_slave_0) entered blocking state [ 77.890616][ T4234] bridge0: port 1(bridge_slave_0) entered disabled state [ 77.898961][ T4234] device bridge_slave_0 entered promiscuous mode [ 77.909413][ T4234] bridge0: port 2(bridge_slave_1) entered blocking state [ 77.916578][ T4234] bridge0: port 2(bridge_slave_1) entered disabled state [ 77.925050][ T4234] device bridge_slave_1 entered promiscuous mode [ 77.951342][ T4234] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 77.963181][ T4234] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 77.991685][ T4234] team0: Port device team_slave_0 added [ 78.000618][ T4234] team0: Port device team_slave_1 added [ 78.022910][ T4234] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 78.029938][ T4234] 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. [ 78.055918][ T4234] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 78.069330][ T4234] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 78.076313][ T4234] 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. [ 78.102578][ T4234] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 78.142537][ T4234] device hsr_slave_0 entered promiscuous mode [ 78.150286][ T4234] device hsr_slave_1 entered promiscuous mode [ 78.297012][ T4234] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 78.311298][ T4234] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 78.322841][ T4234] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 78.334194][ T4234] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 78.431118][ T4234] 8021q: adding VLAN 0 to HW filter on device bond0 [ 78.448645][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 78.459011][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 78.474251][ T4234] 8021q: adding VLAN 0 to HW filter on device team0 [ 78.485547][ T1419] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 78.496275][ T1419] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 78.507295][ T1419] bridge0: port 1(bridge_slave_0) entered blocking state [ 78.514678][ T1419] bridge0: port 1(bridge_slave_0) entered forwarding state [ 78.526172][ T1419] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 78.542789][ T1419] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 78.551865][ T1419] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 78.564608][ T1419] bridge0: port 2(bridge_slave_1) entered blocking state [ 78.571840][ T1419] bridge0: port 2(bridge_slave_1) entered forwarding state [ 78.593089][ T1419] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 78.603487][ T1419] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 78.614943][ T1419] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 78.629132][ T1419] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 78.649815][ T1419] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 78.658388][ T1419] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 78.669435][ T1419] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 78.678087][ T1419] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 78.687810][ T1419] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 78.711270][ T1419] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 78.719933][ T1419] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 78.730889][ T4234] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 78.863035][ T1419] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 78.871615][ T1419] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 78.887030][ T4234] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 78.910934][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 78.939052][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 78.947557][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 78.955428][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 78.966604][ T4234] device veth0_vlan entered promiscuous mode [ 78.981247][ T4234] device veth1_vlan entered promiscuous mode [ 79.033197][ T4234] device veth0_macvtap entered promiscuous mode [ 79.040977][ T1419] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 79.049762][ T1419] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 79.066658][ T1419] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 79.076583][ T1419] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 79.096684][ T4234] device veth1_macvtap entered promiscuous mode [ 79.125810][ T4234] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 79.134546][ T1419] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 79.143522][ T1419] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 79.156466][ T4234] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 79.168467][ T4234] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 79.178695][ T4234] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 79.187739][ T4234] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 79.196814][ T4234] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 79.208678][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 79.218063][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 79.316097][ T4234] syz-executor (4234) used greatest stack depth: 19840 bytes left 2026/08/15 18:40:29 executed programs: 0 [ 81.340253][ T4291] chnl_net:caif_netlink_parms(): no params data found [ 81.396956][ T4291] bridge0: port 1(bridge_slave_0) entered blocking state [ 81.404341][ T4291] bridge0: port 1(bridge_slave_0) entered disabled state [ 81.413123][ T4291] device bridge_slave_0 entered promiscuous mode [ 81.422393][ T4291] bridge0: port 2(bridge_slave_1) entered blocking state [ 81.430125][ T4291] bridge0: port 2(bridge_slave_1) entered disabled state [ 81.438486][ T4291] device bridge_slave_1 entered promiscuous mode [ 81.468380][ T4291] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 81.480859][ T4291] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 81.512207][ T4291] team0: Port device team_slave_0 added [ 81.520741][ T4291] team0: Port device team_slave_1 added [ 81.544351][ T4291] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 81.551457][ T4291] 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. [ 81.578913][ T4291] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 81.592131][ T4291] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 81.599125][ T4291] 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. [ 81.626854][ T4291] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 81.667153][ T4291] device hsr_slave_0 entered promiscuous mode [ 81.675093][ T4291] device hsr_slave_1 entered promiscuous mode [ 81.684269][ T4291] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 81.692778][ T4291] Cannot create hsr debugfs directory [ 81.786040][ T4291] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 83.250248][ T4315] Bluetooth: hci0: command 0x0409 tx timeout [ 84.677078][ T4291] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 84.735870][ T4291] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 84.813532][ T4291] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 84.904876][ T4291] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 84.917526][ T4291] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 84.952652][ T4291] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 84.961711][ T4291] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 85.024179][ T4291] 8021q: adding VLAN 0 to HW filter on device bond0 [ 85.056061][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 85.064058][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 85.074780][ T4291] 8021q: adding VLAN 0 to HW filter on device team0 [ 85.085433][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 85.094584][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 85.103514][ T144] bridge0: port 1(bridge_slave_0) entered blocking state [ 85.110641][ T144] bridge0: port 1(bridge_slave_0) entered forwarding state [ 85.119004][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 85.160910][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 85.172283][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 85.182938][ T154] bridge0: port 2(bridge_slave_1) entered blocking state [ 85.190082][ T154] bridge0: port 2(bridge_slave_1) entered forwarding state [ 85.200862][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 85.243679][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 85.255309][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 85.264841][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 85.277430][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 85.288318][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 85.297285][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 85.310749][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 85.320106][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 85.329481][ T1108] Bluetooth: hci0: command 0x041b tx timeout [ 85.336365][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 85.345149][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 85.355526][ T4291] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 85.467319][ T9] device hsr_slave_0 left promiscuous mode [ 85.477357][ T9] device hsr_slave_1 left promiscuous mode [ 85.485038][ T9] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 85.495326][ T9] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 85.505365][ T9] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 85.515522][ T9] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 85.523413][ T9] device bridge_slave_1 left promiscuous mode [ 85.530688][ T9] bridge0: port 2(bridge_slave_1) entered disabled state [ 85.545296][ T9] device bridge_slave_0 left promiscuous mode [ 85.551977][ T9] bridge0: port 1(bridge_slave_0) entered disabled state [ 85.570615][ T9] device veth1_macvtap left promiscuous mode [ 85.576944][ T9] device veth0_macvtap left promiscuous mode [ 85.586460][ T9] device veth1_vlan left promiscuous mode [ 85.592781][ T9] device veth0_vlan left promiscuous mode [ 85.778517][ T9] team0 (unregistering): Port device team_slave_1 removed [ 85.795974][ T9] team0 (unregistering): Port device team_slave_0 removed [ 85.811183][ T9] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 85.828751][ T9] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 85.886493][ T9] bond0 (unregistering): Released all slaves [ 85.942894][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 85.950494][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 85.964579][ T4291] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 85.985432][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 85.997145][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 86.023473][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 86.032164][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 86.044338][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 86.052604][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 86.062561][ T4291] device veth0_vlan entered promiscuous mode [ 86.076007][ T4291] device veth1_vlan entered promiscuous mode [ 86.086952][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 86.095799][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 86.124672][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 86.133909][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 86.145933][ T4291] device veth0_macvtap entered promiscuous mode [ 86.155467][ T4291] device veth1_macvtap entered promiscuous mode [ 86.183190][ T4291] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 86.192120][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 86.200510][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 86.208648][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 86.224134][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 86.236287][ T4291] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 86.245419][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 86.254909][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 86.267038][ T4291] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 86.276084][ T4291] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 86.286411][ T4291] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 86.295351][ T4291] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 86.348433][ T144] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 86.356582][ T144] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 86.373565][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 86.399890][ T155] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 86.407757][ T155] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 86.417812][ T4321] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 86.589047][ T4322] [ 86.591459][ T4322] ====================================================== [ 86.598498][ T4322] WARNING: possible circular locking dependency detected [ 86.605553][ T4322] syzkaller #0 Not tainted [ 86.609988][ T4322] ------------------------------------------------------ [ 86.617036][ T4322] syz.0.17/4322 is trying to acquire lock: [ 86.622866][ T4322] ffff88807dbc5028 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}, at: __flush_work+0xfa/0x210 [ 86.633967][ T4322] [ 86.633967][ T4322] but task is already holding lock: [ 86.641365][ T4322] ffffffff8d6d5ea8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x1ae/0x560 [ 86.651096][ T4322] [ 86.651096][ T4322] which lock already depends on the new lock. [ 86.651096][ T4322] [ 86.661515][ T4322] [ 86.661515][ T4322] the existing dependency chain (in reverse order) is: [ 86.670550][ T4322] [ 86.670550][ T4322] -> #4 (rfkill_global_mutex){+.+.}-{3:3}: [ 86.678580][ T4322] __mutex_lock_common+0x1e5/0x2400 [ 86.680440][ T7] cfg80211: failed to load regulatory.db [ 86.684332][ T4322] mutex_lock_nested+0x17/0x20 [ 86.684358][ T4322] rfkill_register+0x2f/0x970 [ 86.684380][ T4322] hci_register_dev+0x459/0x980 [ 86.684407][ T4322] vhci_create_device+0x32e/0x5c0 [ 86.684429][ T4322] vhci_write+0x389/0x440 [ 86.684446][ T4322] vfs_write+0x748/0xd70 [ 86.684464][ T4322] ksys_write+0x153/0x260 [ 86.684481][ T4322] do_syscall_64+0x4c/0xa0 [ 86.731110][ T4322] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 86.737567][ T4322] [ 86.737567][ T4322] -> #3 (&data->open_mutex){+.+.}-{3:3}: [ 86.745424][ T4322] __mutex_lock_common+0x1e5/0x2400 [ 86.751178][ T4322] mutex_lock_nested+0x17/0x20 [ 86.756496][ T4322] vhci_send_frame+0x88/0x100 [ 86.761719][ T4322] hci_send_frame+0x1a9/0x2e0 [ 86.766945][ T4322] hci_tx_work+0x9b5/0x16d0 [ 86.772188][ T4322] process_one_work+0x867/0xff0 [ 86.777610][ T4322] worker_thread+0xad7/0x12a0 [ 86.782833][ T4322] kthread+0x42e/0x520 [ 86.787441][ T4322] ret_from_fork+0x1f/0x30 [ 86.792414][ T4322] [ 86.792414][ T4322] -> #2 ((work_completion)(&hdev->tx_work)){+.+.}-{0:0}: [ 86.801678][ T4322] __flush_work+0x116/0x210 [ 86.806728][ T4322] hci_dev_do_close+0x201/0x1020 [ 86.812219][ T4322] hci_unregister_dev+0x2eb/0x590 [ 86.817797][ T4322] vhci_release+0x73/0xc0 [ 86.822675][ T4322] __fput+0x212/0x8c0 [ 86.827208][ T4322] task_work_run+0x125/0x1a0 [ 86.832343][ T4322] do_exit+0x635/0x2110 [ 86.837044][ T4322] do_group_exit+0x12c/0x2f0 [ 86.842349][ T4322] get_signal+0x7eb/0x12e0 [ 86.847317][ T4322] arch_do_signal_or_restart+0xe6/0x12a0 [ 86.853508][ T4322] exit_to_user_mode_loop+0x9e/0x130 [ 86.859338][ T4322] exit_to_user_mode_prepare+0xee/0x180 [ 86.865437][ T4322] syscall_exit_to_user_mode+0x16/0x40 [ 86.871447][ T4322] do_syscall_64+0x58/0xa0 [ 86.876411][ T4322] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 86.882869][ T4322] [ 86.882869][ T4322] -> #1 (&hdev->req_lock){+.+.}-{3:3}: [ 86.890551][ T4322] __mutex_lock_common+0x1e5/0x2400 [ 86.897678][ T4322] mutex_lock_nested+0x17/0x20 [ 86.903012][ T4322] bg_scan_update+0x44/0x3b0 [ 86.908152][ T4322] process_one_work+0x867/0xff0 [ 86.913548][ T4322] worker_thread+0xad7/0x12a0 [ 86.918770][ T4322] kthread+0x42e/0x520 [ 86.923388][ T4322] ret_from_fork+0x1f/0x30 [ 86.928353][ T4322] [ 86.928353][ T4322] -> #0 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}: [ 86.938242][ T4322] __lock_acquire+0x2c66/0x7b50 [ 86.943651][ T4322] lock_acquire+0x19e/0x400 [ 86.948702][ T4322] __flush_work+0x116/0x210 [ 86.953761][ T4322] __cancel_work_timer+0x3f4/0x560 [ 86.959424][ T4322] hci_request_cancel_all+0xcc/0x300 [ 86.965262][ T4322] hci_dev_do_close+0x4e/0x1020 [ 86.970661][ T4322] hci_rfkill_set_block+0x101/0x180 [ 86.976415][ T4322] rfkill_set_block+0x1c1/0x3c0 [ 86.981819][ T4322] rfkill_fop_write+0x453/0x560 [ 86.987216][ T4322] vfs_write+0x304/0xd70 [ 86.992003][ T4322] ksys_write+0x153/0x260 [ 86.996885][ T4322] do_syscall_64+0x4c/0xa0 [ 87.001861][ T4322] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 87.008307][ T4322] [ 87.008307][ T4322] other info that might help us debug this: [ 87.008307][ T4322] [ 87.018553][ T4322] Chain exists of: [ 87.018553][ T4322] (work_completion)(&hdev->bg_scan_update) --> &data->open_mutex --> rfkill_global_mutex [ 87.018553][ T4322] [ 87.034342][ T4322] Possible unsafe locking scenario: [ 87.034342][ T4322] [ 87.041817][ T4322] CPU0 CPU1 [ 87.047202][ T4322] ---- ---- [ 87.052584][ T4322] lock(rfkill_global_mutex); [ 87.057379][ T4322] lock(&data->open_mutex); [ 87.064510][ T4322] lock(rfkill_global_mutex); [ 87.071825][ T4322] lock((work_completion)(&hdev->bg_scan_update)); [ 87.078438][ T4322] [ 87.078438][ T4322] *** DEADLOCK *** [ 87.078438][ T4322] [ 87.086600][ T4322] 1 lock held by syz.0.17/4322: [ 87.091471][ T4322] #0: ffffffff8d6d5ea8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x1ae/0x560 [ 87.101607][ T4322] [ 87.101607][ T4322] stack backtrace: [ 87.107521][ T4322] CPU: 1 PID: 4322 Comm: syz.0.17 Not tainted syzkaller #0 [ 87.114743][ T4322] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 [ 87.124828][ T4322] Call Trace: [ 87.128135][ T4322] [ 87.131091][ T4322] dump_stack_lvl+0x188/0x250 [ 87.135800][ T4322] ? load_image+0x410/0x410 [ 87.140331][ T4322] ? show_regs_print_info+0x20/0x20 [ 87.145559][ T4322] ? print_circular_bug+0x12b/0x1a0 [ 87.150779][ T4322] check_noncircular+0x296/0x330 [ 87.155742][ T4322] ? look_up_lock_class+0x71/0x110 [ 87.160885][ T4322] ? add_chain_block+0x9b0/0x9b0 [ 87.165856][ T4322] ? lockdep_lock+0xf1/0x1f0 [ 87.170485][ T4322] ? __lock_acquire+0x1305/0x7b50 [ 87.175543][ T4322] ? mark_lock+0x94/0x320 [ 87.179899][ T4322] ? _find_first_zero_bit+0xd1/0xf0 [ 87.185135][ T4322] __lock_acquire+0x2c66/0x7b50 [ 87.190019][ T4322] ? verify_lock_unused+0x140/0x140 [ 87.195251][ T4322] ? verify_lock_unused+0x140/0x140 [ 87.200495][ T4322] lock_acquire+0x19e/0x400 [ 87.205029][ T4322] ? __flush_work+0xfa/0x210 [ 87.209644][ T4322] ? __lock_acquire+0x7b50/0x7b50 [ 87.214703][ T4322] ? read_lock_is_recursive+0x10/0x10 [ 87.220109][ T4322] ? start_flush_work+0x784/0x830 [ 87.225163][ T4322] __flush_work+0x116/0x210 [ 87.229690][ T4322] ? __flush_work+0xfa/0x210 [ 87.234302][ T4322] ? flush_work+0x20/0x20 [ 87.238663][ T4322] ? try_to_grab_pending+0xfb/0x820 [ 87.243888][ T4322] ? mark_lock+0x94/0x320 [ 87.248256][ T4322] ? lockdep_hardirqs_on_prepare+0x448/0x7c0 [ 87.254409][ T4322] ? lock_chain_count+0x20/0x20 [ 87.259293][ T4322] ? mark_lock+0x94/0x320 [ 87.263687][ T4322] ? __cancel_work_timer+0x36a/0x560 [ 87.268997][ T4322] __cancel_work_timer+0x3f4/0x560 [ 87.274134][ T4322] ? cancel_work_sync+0x20/0x20 [ 87.279096][ T4322] ? __cancel_work+0x1f9/0x2e0 [ 87.283893][ T4322] ? lockdep_hardirqs_on+0x94/0x140 [ 87.289134][ T4322] ? __cancel_work+0x27b/0x2e0 [ 87.293937][ T4322] ? cancel_work+0x20/0x20 [ 87.298383][ T4322] hci_request_cancel_all+0xcc/0x300 [ 87.303705][ T4322] hci_dev_do_close+0x4e/0x1020 [ 87.308587][ T4322] ? _raw_spin_unlock_irqrestore+0xc1/0x120 [ 87.314595][ T4322] ? _raw_spin_unlock+0x40/0x40 [ 87.319477][ T4322] hci_rfkill_set_block+0x101/0x180 [ 87.324713][ T4322] ? rcu_lock_release+0x20/0x20 [ 87.329602][ T4322] rfkill_set_block+0x1c1/0x3c0 [ 87.334487][ T4322] rfkill_fop_write+0x453/0x560 [ 87.339376][ T4322] ? rfkill_fop_read+0x560/0x560 [ 87.344346][ T4322] ? common_file_perm+0x100/0x1c0 [ 87.349401][ T4322] ? fsnotify_perm+0x5d/0x560 [ 87.354101][ T4322] ? security_file_permission+0x75/0xa0 [ 87.359674][ T4322] ? rfkill_fop_read+0x560/0x560 [ 87.364646][ T4322] vfs_write+0x304/0xd70 [ 87.368930][ T4322] ? file_end_write+0x250/0x250 [ 87.373812][ T4322] ? __context_tracking_exit+0x4c/0x80 [ 87.379303][ T4322] ? __fdget_pos+0x1e2/0x370 [ 87.383925][ T4322] ksys_write+0x153/0x260 [ 87.388285][ T4322] ? __ia32_sys_read+0x80/0x80 [ 87.393087][ T4322] ? lockdep_hardirqs_on+0x94/0x140 [ 87.398319][ T4322] do_syscall_64+0x4c/0xa0 [ 87.402771][ T4322] ? clear_bhb_loop+0x30/0x80 [ 87.407476][ T4322] ? clear_bhb_loop+0x30/0x80 [ 87.412193][ T4322] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 87.418132][ T4322] RIP: 0033:0x7f99b7b5e0d9 [ 87.422582][ 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 [ 87.442232][ T4322] RSP: 002b:00007ffd7cf31b38 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 87.450679][ T4322] RAX: ffffffffffffffda RBX: 00007f99b7de5fa0 RCX: 00007f99b7b5e0d9 [ 87.458678][ T4322] RDX: 0000000000000008 RSI: 0000200000000180 RDI: 0000000000000003 [ 87.466676][ T4322] RBP: 00007f99b7bf5024 R08: 0000000000000000 R09: 0000000000000000 [ 87.474672][ T4322] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 87.482683][ T4322] R13: 00007f99b7de5fac R14: 00007f99b7de5fa0 R15: 00007f99b7de5fa0 [ 87.490691][ T4322]