Warning: Permanently added '10.128.1.105' (ED25519) to the list of known hosts. 2026/04/26 09:58:58 parsed 1 programs [ 67.710089][ T4187] cgroup: Unknown subsys name 'net' [ 67.833912][ T4187] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size = 127995904 bytes [ 69.464205][ T4187] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k FS [ 71.093715][ T144] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 71.105081][ T144] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 71.127378][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 71.147332][ T144] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 71.155986][ T144] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 71.165162][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 71.861907][ T1427] ieee802154 phy0 wpan0: encryption failed: -22 [ 71.868812][ T1427] ieee802154 phy1 wpan1: encryption failed: -22 [ 73.184954][ T3081] ODEBUG: Out of memory. ODEBUG disabled [ 73.433172][ T4256] chnl_net:caif_netlink_parms(): no params data found [ 73.512226][ T4256] bridge0: port 1(bridge_slave_0) entered blocking state [ 73.522094][ T4256] bridge0: port 1(bridge_slave_0) entered disabled state [ 73.531099][ T4256] device bridge_slave_0 entered promiscuous mode [ 73.541132][ T4256] bridge0: port 2(bridge_slave_1) entered blocking state [ 73.549663][ T4256] bridge0: port 2(bridge_slave_1) entered disabled state [ 73.560308][ T4256] device bridge_slave_1 entered promiscuous mode [ 73.578724][ T4256] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 73.591253][ T4256] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 73.612774][ T4256] team0: Port device team_slave_0 added [ 73.620503][ T4256] team0: Port device team_slave_1 added [ 73.636613][ T4256] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 73.644177][ T4256] batman_adv: batadv0: The MTU of interface batadv_slave_0 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. [ 73.671685][ T4256] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 73.684183][ T4256] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 73.692431][ T4256] batman_adv: batadv0: The MTU of interface batadv_slave_1 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. [ 73.722792][ T4256] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 73.751768][ T4256] device hsr_slave_0 entered promiscuous mode [ 73.759744][ T4256] device hsr_slave_1 entered promiscuous mode [ 73.841702][ T4256] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 73.852031][ T4256] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 73.864690][ T4256] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 73.874568][ T4256] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 73.922587][ T4256] 8021q: adding VLAN 0 to HW filter on device bond0 [ 73.936861][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 73.945183][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 73.956832][ T4256] 8021q: adding VLAN 0 to HW filter on device team0 [ 73.969139][ T614] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 73.979018][ T614] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 73.989821][ T614] bridge0: port 1(bridge_slave_0) entered blocking state [ 73.998357][ T614] bridge0: port 1(bridge_slave_0) entered forwarding state [ 74.009338][ T614] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 74.036444][ T614] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 74.045750][ T614] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 74.057313][ T614] bridge0: port 2(bridge_slave_1) entered blocking state [ 74.064857][ T614] bridge0: port 2(bridge_slave_1) entered forwarding state [ 74.096326][ T614] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 74.110670][ T614] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 74.123562][ T614] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 74.134024][ T614] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 74.144106][ T614] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 74.179236][ T614] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 74.189684][ T614] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 74.201162][ T614] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 74.210808][ T614] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 74.245166][ T614] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 74.254727][ T614] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 74.265571][ T4256] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 74.381495][ T614] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 74.389938][ T614] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 74.403748][ T4256] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 74.446320][ T614] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 74.456539][ T614] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 74.475124][ T614] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 74.484530][ T614] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 74.499212][ T614] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 74.507560][ T614] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 74.517783][ T4256] device veth0_vlan entered promiscuous mode [ 74.540899][ T4256] device veth1_vlan entered promiscuous mode [ 74.562540][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 74.571701][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 74.580495][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 74.592776][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 74.603614][ T4256] device veth0_macvtap entered promiscuous mode [ 74.628553][ T4256] device veth1_macvtap entered promiscuous mode [ 74.644410][ T4256] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 74.653812][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 74.662429][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 74.671835][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 74.681392][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 74.695771][ T4256] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 74.704374][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 74.713862][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 74.744580][ T4256] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 74.754815][ T4256] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 74.764616][ T4256] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 74.773739][ T4256] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 2026/04/26 09:59:08 executed programs: 0 [ 75.598051][ T4298] chnl_net:caif_netlink_parms(): no params data found [ 75.666482][ T4298] bridge0: port 1(bridge_slave_0) entered blocking state [ 75.675374][ T4298] bridge0: port 1(bridge_slave_0) entered disabled state [ 75.686902][ T4298] device bridge_slave_0 entered promiscuous mode [ 75.696852][ T4298] bridge0: port 2(bridge_slave_1) entered blocking state [ 75.707051][ T4298] bridge0: port 2(bridge_slave_1) entered disabled state [ 75.715679][ T4298] device bridge_slave_1 entered promiscuous mode [ 75.749053][ T4298] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 75.761765][ T4298] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 75.796547][ T4298] team0: Port device team_slave_0 added [ 75.807377][ T4298] team0: Port device team_slave_1 added [ 75.830012][ T4298] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 75.837430][ T4298] 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. [ 75.866325][ T4298] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 75.883803][ T4298] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 75.893498][ T4298] 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. [ 75.924451][ T4298] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 75.963671][ T4298] device hsr_slave_0 entered promiscuous mode [ 75.970710][ T4298] device hsr_slave_1 entered promiscuous mode [ 75.978131][ T4298] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 75.986822][ T4298] Cannot create hsr debugfs directory [ 76.082803][ T4298] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 77.459029][ T1108] Bluetooth: hci0: command 0x0409 tx timeout [ 79.412807][ T4298] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 79.537834][ T4276] Bluetooth: hci0: command 0x041b tx timeout [ 80.133210][ T4298] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 80.175040][ T4298] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 80.276244][ T4298] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 80.287139][ T4298] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 80.304398][ T4298] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 80.314336][ T4298] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 80.371339][ T4298] 8021q: adding VLAN 0 to HW filter on device bond0 [ 80.384815][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 80.393833][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 80.411976][ T4298] 8021q: adding VLAN 0 to HW filter on device team0 [ 80.422757][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 80.432652][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 80.442491][ T154] bridge0: port 1(bridge_slave_0) entered blocking state [ 80.450235][ T154] bridge0: port 1(bridge_slave_0) entered forwarding state [ 80.459380][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 80.479705][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 80.489477][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 80.499535][ T144] bridge0: port 2(bridge_slave_1) entered blocking state [ 80.507741][ T144] bridge0: port 2(bridge_slave_1) entered forwarding state [ 80.519126][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 80.539998][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 80.552238][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 80.562259][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 80.573379][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 80.594207][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 80.603692][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 80.615440][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 80.624320][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 80.641791][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 80.652053][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 80.665451][ T4298] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 80.714053][ T3081] device hsr_slave_0 left promiscuous mode [ 80.721096][ T3081] device hsr_slave_1 left promiscuous mode [ 80.729193][ T3081] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 80.738334][ T3081] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 80.747330][ T3081] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 80.758029][ T3081] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 80.766941][ T3081] device bridge_slave_1 left promiscuous mode [ 80.774991][ T3081] bridge0: port 2(bridge_slave_1) entered disabled state [ 80.789488][ T3081] device bridge_slave_0 left promiscuous mode [ 80.796098][ T3081] bridge0: port 1(bridge_slave_0) entered disabled state [ 80.812419][ T3081] device veth1_macvtap left promiscuous mode [ 80.819677][ T3081] device veth0_macvtap left promiscuous mode [ 80.825904][ T3081] device veth1_vlan left promiscuous mode [ 80.832497][ T3081] device veth0_vlan left promiscuous mode [ 80.958326][ T3081] team0 (unregistering): Port device team_slave_1 removed [ 80.974782][ T3081] team0 (unregistering): Port device team_slave_0 removed [ 80.987333][ T3081] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 81.001938][ T3081] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 81.052984][ T3081] bond0 (unregistering): Released all slaves [ 81.168262][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 81.177266][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 81.191766][ T4298] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 81.208866][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 81.219109][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 81.240398][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 81.248992][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 81.260766][ T4298] device veth0_vlan entered promiscuous mode [ 81.269424][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 81.283812][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 81.295663][ T4298] device veth1_vlan entered promiscuous mode [ 81.314238][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 81.322825][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 81.332454][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 81.342171][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 81.362363][ T4298] device veth0_macvtap entered promiscuous mode [ 81.379686][ T4298] device veth1_macvtap entered promiscuous mode [ 81.388785][ T4289] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 81.397387][ T4289] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 81.414943][ T4298] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 81.429553][ T4298] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 81.439014][ T4289] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 81.449623][ T4289] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 81.459933][ T4289] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 81.469488][ T4289] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 81.481944][ T4298] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 81.491169][ T4298] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 81.500524][ T4298] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 81.510390][ T4298] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 81.587042][ T154] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 81.607303][ T154] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 81.618007][ T4277] Bluetooth: hci0: command 0x040f tx timeout [ 81.631213][ T4289] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 81.643015][ T154] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 81.652203][ T154] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 81.661539][ T4289] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 81.804092][ T4310] [ 81.806760][ T4310] ====================================================== [ 81.814714][ T4310] WARNING: possible circular locking dependency detected [ 81.821930][ T4310] syzkaller #0 Not tainted [ 81.826632][ T4310] ------------------------------------------------------ [ 81.833984][ T4310] syz.0.17/4310 is trying to acquire lock: [ 81.840098][ T4310] ffff8880247ecc28 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}, at: __flush_work+0xfa/0x210 [ 81.851615][ T4310] [ 81.851615][ T4310] but task is already holding lock: [ 81.859052][ T4310] ffffffff8d6c5de8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x18b/0x560 [ 81.869308][ T4310] [ 81.869308][ T4310] which lock already depends on the new lock. [ 81.869308][ T4310] [ 81.880580][ T4310] [ 81.880580][ T4310] the existing dependency chain (in reverse order) is: [ 81.890056][ T4310] [ 81.890056][ T4310] -> #4 (rfkill_global_mutex){+.+.}-{3:3}: [ 81.898927][ T4310] __mutex_lock_common+0x1e3/0x2400 [ 81.905171][ T4310] mutex_lock_nested+0x17/0x20 [ 81.911305][ T4310] rfkill_register+0x33/0x980 [ 81.916715][ T4310] hci_register_dev+0x452/0x970 [ 81.922214][ T4310] vhci_create_device+0x32c/0x5c0 [ 81.927968][ T4310] vhci_write+0x391/0x450 [ 81.933197][ T4310] vfs_write+0x745/0xd60 [ 81.938564][ T4310] ksys_write+0x152/0x260 [ 81.943796][ T4310] do_syscall_64+0x4c/0xa0 [ 81.949310][ T4310] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 81.956026][ T4310] [ 81.956026][ T4310] -> #3 (&data->open_mutex){+.+.}-{3:3}: [ 81.964449][ T4310] __mutex_lock_common+0x1e3/0x2400 [ 81.970563][ T4310] mutex_lock_nested+0x17/0x20 [ 81.975976][ T4310] vhci_send_frame+0x88/0x100 [ 81.981382][ T4310] hci_send_frame+0x1a9/0x2e0 [ 81.986800][ T4310] hci_tx_work+0x9f9/0x1710 [ 81.991948][ T4310] process_one_work+0x85f/0x1010 [ 81.998232][ T4310] worker_thread+0xaa6/0x1290 [ 82.003547][ T4310] kthread+0x436/0x520 [ 82.008167][ T4310] ret_from_fork+0x1f/0x30 [ 82.013233][ T4310] [ 82.013233][ T4310] -> #2 ((work_completion)(&hdev->tx_work)){+.+.}-{0:0}: [ 82.022772][ T4310] __flush_work+0x116/0x210 [ 82.028137][ T4310] hci_dev_do_close+0x1e7/0x1030 [ 82.033720][ T4310] hci_unregister_dev+0x2d7/0x580 [ 82.039788][ T4310] vhci_release+0x73/0xc0 [ 82.045002][ T4310] __fput+0x234/0x930 [ 82.049712][ T4310] task_work_run+0x125/0x1a0 [ 82.054944][ T4310] do_exit+0x626/0x20c0 [ 82.059764][ T4310] do_group_exit+0x12e/0x300 [ 82.064914][ T4310] get_signal+0x6ca/0x12c0 [ 82.069890][ T4310] arch_do_signal_or_restart+0xe7/0x12c0 [ 82.076353][ T4310] exit_to_user_mode_loop+0x9e/0x130 [ 82.082383][ T4310] exit_to_user_mode_prepare+0xee/0x180 [ 82.088729][ T4310] syscall_exit_to_user_mode+0x16/0x40 [ 82.095145][ T4310] do_syscall_64+0x58/0xa0 [ 82.100221][ T4310] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 82.107040][ T4310] [ 82.107040][ T4310] -> #1 (&hdev->req_lock){+.+.}-{3:3}: [ 82.115269][ T4310] __mutex_lock_common+0x1e3/0x2400 [ 82.121604][ T4310] mutex_lock_nested+0x17/0x20 [ 82.127301][ T4310] bg_scan_update+0x44/0x3b0 [ 82.132633][ T4310] process_one_work+0x85f/0x1010 [ 82.138354][ T4310] worker_thread+0xaa6/0x1290 [ 82.144179][ T4310] kthread+0x436/0x520 [ 82.148978][ T4310] ret_from_fork+0x1f/0x30 [ 82.154577][ T4310] [ 82.154577][ T4310] -> #0 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}: [ 82.165289][ T4310] __lock_acquire+0x2c42/0x7d10 [ 82.170882][ T4310] lock_acquire+0x19e/0x400 [ 82.176749][ T4310] __flush_work+0x116/0x210 [ 82.181972][ T4310] __cancel_work_timer+0x3f4/0x560 [ 82.187749][ T4310] hci_request_cancel_all+0xcc/0x300 [ 82.194349][ T4310] hci_dev_do_close+0x4e/0x1030 [ 82.200404][ T4310] hci_rfkill_set_block+0x10a/0x190 [ 82.206759][ T4310] rfkill_set_block+0x1c9/0x3d0 [ 82.213025][ T4310] rfkill_fop_write+0x452/0x560 [ 82.219238][ T4310] do_iter_write+0x3e4/0x7b0 [ 82.225278][ T4310] do_writev+0x281/0x480 [ 82.231135][ T4310] do_syscall_64+0x4c/0xa0 [ 82.236374][ T4310] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 82.243461][ T4310] [ 82.243461][ T4310] other info that might help us debug this: [ 82.243461][ T4310] [ 82.254077][ T4310] Chain exists of: [ 82.254077][ T4310] (work_completion)(&hdev->bg_scan_update) --> &data->open_mutex --> rfkill_global_mutex [ 82.254077][ T4310] [ 82.270841][ T4310] Possible unsafe locking scenario: [ 82.270841][ T4310] [ 82.279170][ T4310] CPU0 CPU1 [ 82.285022][ T4310] ---- ---- [ 82.291275][ T4310] lock(rfkill_global_mutex); [ 82.296507][ T4310] lock(&data->open_mutex); [ 82.303914][ T4310] lock(rfkill_global_mutex); [ 82.311817][ T4310] lock((work_completion)(&hdev->bg_scan_update)); [ 82.318650][ T4310] [ 82.318650][ T4310] *** DEADLOCK *** [ 82.318650][ T4310] [ 82.326907][ T4310] 1 lock held by syz.0.17/4310: [ 82.332325][ T4310] #0: ffffffff8d6c5de8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x18b/0x560 [ 82.342815][ T4310] [ 82.342815][ T4310] stack backtrace: [ 82.349244][ T4310] CPU: 0 PID: 4310 Comm: syz.0.17 Not tainted syzkaller #0 [ 82.357181][ T4310] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 82.368057][ T4310] Call Trace: [ 82.372071][ T4310] [ 82.375287][ T4310] dump_stack_lvl+0x188/0x250 [ 82.380841][ T4310] ? load_image+0x400/0x400 [ 82.386441][ T4310] ? show_regs_print_info+0x20/0x20 [ 82.391872][ T4310] ? print_circular_bug+0x12b/0x1a0 [ 82.397552][ T4310] check_noncircular+0x296/0x330 [ 82.402625][ T4310] ? look_up_lock_class+0x71/0x110 [ 82.408150][ T4310] ? add_chain_block+0x940/0x940 [ 82.413780][ T4310] ? lockdep_lock+0xf1/0x1f0 [ 82.418923][ T4310] ? __lock_acquire+0x12e8/0x7d10 [ 82.424980][ T4310] ? mark_lock+0x94/0x320 [ 82.429539][ T4310] __lock_acquire+0x2c42/0x7d10 [ 82.434780][ T4310] ? verify_lock_unused+0x140/0x140 [ 82.440012][ T4310] ? mark_lock+0x94/0x320 [ 82.444547][ T4310] lock_acquire+0x19e/0x400 [ 82.449183][ T4310] ? __flush_work+0xfa/0x210 [ 82.453998][ T4310] ? __lock_acquire+0x7d10/0x7d10 [ 82.459465][ T4310] ? read_lock_is_recursive+0x10/0x10 [ 82.465135][ T4310] ? start_flush_work+0x776/0x820 [ 82.470374][ T4310] __flush_work+0x116/0x210 [ 82.474902][ T4310] ? __flush_work+0xfa/0x210 [ 82.480125][ T4310] ? flush_work+0x20/0x20 [ 82.484485][ T4310] ? try_to_grab_pending+0xfa/0x7f0 [ 82.490075][ T4310] ? mark_lock+0x94/0x320 [ 82.494701][ T4310] ? lockdep_hardirqs_on_prepare+0x409/0x770 [ 82.500836][ T4310] ? lock_chain_count+0x20/0x20 [ 82.505963][ T4310] ? mark_lock+0x94/0x320 [ 82.510493][ T4310] ? __cancel_work_timer+0x36a/0x560 [ 82.515848][ T4310] __cancel_work_timer+0x3f4/0x560 [ 82.521286][ T4310] ? cancel_work_sync+0x20/0x20 [ 82.526614][ T4310] ? __cancel_work+0x1f9/0x2e0 [ 82.531735][ T4310] ? lockdep_hardirqs_on+0x94/0x140 [ 82.537052][ T4310] ? __cancel_work+0x27b/0x2e0 [ 82.542053][ T4310] ? cancel_work+0x20/0x20 [ 82.546600][ T4310] ? lock_chain_count+0x20/0x20 [ 82.552511][ T4310] hci_request_cancel_all+0xcc/0x300 [ 82.558341][ T4310] hci_dev_do_close+0x4e/0x1030 [ 82.563461][ T4310] ? _raw_spin_unlock_irqrestore+0xc1/0x120 [ 82.570236][ T4310] ? _raw_spin_unlock+0x40/0x40 [ 82.575364][ T4310] hci_rfkill_set_block+0x10a/0x190 [ 82.580695][ T4310] ? rcu_lock_release+0x20/0x20 [ 82.586007][ T4310] rfkill_set_block+0x1c9/0x3d0 [ 82.591271][ T4310] rfkill_fop_write+0x452/0x560 [ 82.596390][ T4310] ? _copy_from_user+0x111/0x170 [ 82.601606][ T4310] ? rfkill_fop_read+0x520/0x520 [ 82.606547][ T4310] ? common_file_perm+0x171/0x1c0 [ 82.611950][ T4310] ? fsnotify_perm+0x5d/0x560 [ 82.616734][ T4310] ? security_file_permission+0x75/0xa0 [ 82.622493][ T4310] do_iter_write+0x3e4/0x7b0 [ 82.627478][ T4310] do_writev+0x281/0x480 [ 82.631735][ T4310] ? do_readv+0x460/0x460 [ 82.636345][ T4310] ? lockdep_hardirqs_on_prepare+0x409/0x770 [ 82.642639][ T4310] ? lock_chain_count+0x20/0x20 [ 82.648146][ T4310] ? vtime_user_exit+0x2c8/0x3e0 [ 82.653264][ T4310] ? lockdep_hardirqs_on+0x94/0x140 [ 82.658566][ T4310] do_syscall_64+0x4c/0xa0 [ 82.663356][ T4310] ? clear_bhb_loop+0x30/0x80 [ 82.668427][ T4310] ? clear_bhb_loop+0x30/0x80 [ 82.673226][ T4310] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 82.679995][ T4310] RIP: 0033:0x7f22dd1cddd9 [ 82.684982][ T4310] 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 [ 82.706506][ T4310] RSP: 002b:00007ffd42c8fc18 EFLAGS: 00000246 ORIG_RAX: 0000000000000014 [ 82.715964][ T4310] RAX: ffffffffffffffda RBX: 00007f22dd446fa0 RCX: 00007f22dd1cddd9 [ 82.724972][ T4310] RDX: 0000000000000001 RSI: 0000200000000100 RDI: 0000000000000003 [ 82.733683][ T4310] RBP: 00007f22dd263d69 R08: 0000000000000000 R09: 0000000000000000 [ 82.743923][ T4310] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 82.752860][ T4310] R13: 00007f22dd446fac R14: 00007f22dd446fa0 R15: 00007f22dd446fa0 [ 82.761488][ T4310]