Warning: Permanently added '10.128.1.143' (ED25519) to the list of known hosts. 2026/03/08 07:12:33 parsed 1 programs [ 72.393473][ T4188] cgroup: Unknown subsys name 'net' [ 72.510931][ T4188] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size = 127995904 bytes [ 74.082022][ T4188] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k FS [ 76.855143][ T3032] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 76.863803][ T3032] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 76.894428][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 76.911939][ T3032] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 76.920727][ T3032] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 76.928674][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 77.270212][ T4237] chnl_net:caif_netlink_parms(): no params data found [ 77.344763][ T4237] bridge0: port 1(bridge_slave_0) entered blocking state [ 77.353001][ T4237] bridge0: port 1(bridge_slave_0) entered disabled state [ 77.365462][ T4237] device bridge_slave_0 entered promiscuous mode [ 77.378176][ T4237] bridge0: port 2(bridge_slave_1) entered blocking state [ 77.385747][ T4237] bridge0: port 2(bridge_slave_1) entered disabled state [ 77.395964][ T4237] device bridge_slave_1 entered promiscuous mode [ 77.425096][ T4237] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 77.438096][ T4237] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 77.469767][ T4237] team0: Port device team_slave_0 added [ 77.478288][ T4237] team0: Port device team_slave_1 added [ 77.502281][ T4237] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 77.509901][ T4237] 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. [ 77.539516][ T4237] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 77.553401][ T4237] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 77.561080][ T4237] 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. [ 77.587540][ T4237] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 77.628462][ T4237] device hsr_slave_0 entered promiscuous mode [ 77.635889][ T4237] device hsr_slave_1 entered promiscuous mode [ 77.779937][ T4237] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 77.794808][ T4237] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 77.805266][ T4237] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 77.828459][ T4237] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 77.985202][ T4237] 8021q: adding VLAN 0 to HW filter on device bond0 [ 77.998619][ T4229] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 78.007958][ T4229] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 78.020452][ T4237] 8021q: adding VLAN 0 to HW filter on device team0 [ 78.033148][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 78.043638][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 78.056086][ T144] bridge0: port 1(bridge_slave_0) entered blocking state [ 78.063696][ T144] bridge0: port 1(bridge_slave_0) entered forwarding state [ 78.075913][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 78.084525][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 78.093941][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 78.105438][ T144] bridge0: port 2(bridge_slave_1) entered blocking state [ 78.112640][ T144] bridge0: port 2(bridge_slave_1) entered forwarding state [ 78.122894][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 78.135181][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 78.148578][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 78.158372][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 78.167610][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 78.179648][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 78.190728][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 78.202277][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 78.212828][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 78.242732][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 78.252744][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 78.263903][ T4237] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 78.379075][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 78.386998][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 78.402283][ T4237] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 78.438243][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 78.458657][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 78.468173][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 78.476741][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 78.490577][ T4237] device veth0_vlan entered promiscuous mode [ 78.517908][ T4237] device veth1_vlan entered promiscuous mode [ 78.540644][ T4229] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 78.549881][ T4229] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 78.558653][ T4229] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 78.570181][ T4237] device veth0_macvtap entered promiscuous mode [ 78.599123][ T4237] device veth1_macvtap entered promiscuous mode [ 78.617411][ T4237] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 78.626177][ T4229] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 78.636989][ T4229] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 78.646222][ T4229] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 78.658853][ T4237] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 78.667380][ T4229] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 78.676454][ T4229] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 78.689116][ T4237] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 78.698230][ T4237] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 78.709166][ T4237] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 78.718388][ T4237] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 78.836973][ T4237] syz-executor (4237) used greatest stack depth: 20688 bytes left 2026/03/08 07:12:43 executed programs: 0 [ 80.271812][ T4289] chnl_net:caif_netlink_parms(): no params data found [ 80.339821][ T4289] bridge0: port 1(bridge_slave_0) entered blocking state [ 80.350116][ T4289] bridge0: port 1(bridge_slave_0) entered disabled state [ 80.359453][ T4289] device bridge_slave_0 entered promiscuous mode [ 80.371083][ T4289] bridge0: port 2(bridge_slave_1) entered blocking state [ 80.378871][ T4289] bridge0: port 2(bridge_slave_1) entered disabled state [ 80.390067][ T4289] device bridge_slave_1 entered promiscuous mode [ 80.434351][ T4289] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 80.448471][ T4289] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 80.478176][ T4289] team0: Port device team_slave_0 added [ 80.487150][ T4289] team0: Port device team_slave_1 added [ 80.509808][ T4289] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 80.517362][ T4289] batman_adv: batadv0: The MTU of interface batadv_slave_0 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. [ 80.547312][ T4289] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 80.561954][ T4289] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 80.571607][ T4289] batman_adv: batadv0: The MTU of interface batadv_slave_1 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. [ 80.599860][ T4289] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 80.638741][ T4289] device hsr_slave_0 entered promiscuous mode [ 80.645707][ T4289] device hsr_slave_1 entered promiscuous mode [ 80.652621][ T4289] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 80.661195][ T4289] Cannot create hsr debugfs directory [ 80.758974][ T4289] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 82.155197][ T4253] Bluetooth: hci0: command 0x0409 tx timeout [ 83.842000][ T4289] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 83.890312][ T4289] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 83.963303][ T4289] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 84.065828][ T4289] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 84.097134][ T4289] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 84.107587][ T4289] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 84.118841][ T4289] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 84.181693][ T4289] 8021q: adding VLAN 0 to HW filter on device bond0 [ 84.212718][ T3032] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 84.222928][ T3032] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 84.237080][ T4253] Bluetooth: hci0: command 0x041b tx timeout [ 84.244564][ T4289] 8021q: adding VLAN 0 to HW filter on device team0 [ 84.275312][ T3032] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 84.284503][ T3032] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 84.292966][ T3032] bridge0: port 1(bridge_slave_0) entered blocking state [ 84.300911][ T3032] bridge0: port 1(bridge_slave_0) entered forwarding state [ 84.309315][ T3032] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 84.321629][ T4229] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 84.332758][ T4229] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 84.342405][ T4229] bridge0: port 2(bridge_slave_1) entered blocking state [ 84.349556][ T4229] bridge0: port 2(bridge_slave_1) entered forwarding state [ 84.362905][ T4229] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 84.398510][ T4229] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 84.411803][ T4229] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 84.426408][ T4229] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 84.436366][ T4229] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 84.463828][ T3032] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 84.472915][ T3032] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 84.486820][ T4229] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 84.495938][ T4229] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 84.523039][ T4289] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 84.536002][ T4289] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 84.543870][ T4229] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 84.552737][ T4229] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 84.576562][ T1166] device hsr_slave_0 left promiscuous mode [ 84.583466][ T1166] device hsr_slave_1 left promiscuous mode [ 84.596195][ T1166] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 84.606413][ T1166] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 84.617150][ T1166] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 84.624978][ T1166] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 84.633615][ T1166] device bridge_slave_1 left promiscuous mode [ 84.646447][ T1166] bridge0: port 2(bridge_slave_1) entered disabled state [ 84.664292][ T1166] device bridge_slave_0 left promiscuous mode [ 84.670770][ T1166] bridge0: port 1(bridge_slave_0) entered disabled state [ 84.690267][ T1166] device veth1_macvtap left promiscuous mode [ 84.698057][ T1166] device veth0_macvtap left promiscuous mode [ 84.704818][ T1166] device veth1_vlan left promiscuous mode [ 84.710775][ T1166] device veth0_vlan left promiscuous mode [ 84.897472][ T1166] team0 (unregistering): Port device team_slave_1 removed [ 84.911340][ T1166] team0 (unregistering): Port device team_slave_0 removed [ 84.927099][ T1166] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 84.945178][ T1166] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 85.012252][ T1166] bond0 (unregistering): Released all slaves [ 85.109080][ T4229] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 85.117573][ T4229] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 85.140789][ T4289] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 85.159646][ T3032] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 85.168923][ T3032] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 85.192870][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 85.202183][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 85.217089][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 85.229021][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 85.238201][ T4289] device veth0_vlan entered promiscuous mode [ 85.250346][ T4289] device veth1_vlan entered promiscuous mode [ 85.272392][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 85.281804][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 85.293726][ T4289] device veth0_macvtap entered promiscuous mode [ 85.308888][ T4289] device veth1_macvtap entered promiscuous mode [ 85.332376][ T4289] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 85.339847][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 85.348641][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 85.357729][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 85.367070][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 85.380042][ T4289] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 85.391503][ T4289] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 85.404794][ T4289] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 85.413649][ T4289] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 85.422796][ T4289] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 85.433642][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 85.442618][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 85.528159][ T144] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 85.545278][ T144] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 85.552988][ T3032] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 85.579726][ T3032] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 85.588031][ T3032] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 85.606326][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 85.774773][ T4309] [ 85.777270][ T4309] ====================================================== [ 85.784404][ T4309] WARNING: possible circular locking dependency detected [ 85.791667][ T4309] syzkaller #0 Not tainted [ 85.796548][ T4309] ------------------------------------------------------ [ 85.803799][ T4309] syz.0.17/4309 is trying to acquire lock: [ 85.810253][ T4309] ffff888026948c28 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}, at: __flush_work+0xfa/0x210 [ 85.821586][ T4309] [ 85.821586][ T4309] but task is already holding lock: [ 85.829692][ T4309] ffffffff8d6c51a8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x18b/0x560 [ 85.839466][ T4309] [ 85.839466][ T4309] which lock already depends on the new lock. [ 85.839466][ T4309] [ 85.850892][ T4309] [ 85.850892][ T4309] the existing dependency chain (in reverse order) is: [ 85.860554][ T4309] [ 85.860554][ T4309] -> #4 (rfkill_global_mutex){+.+.}-{3:3}: [ 85.869972][ T4309] __mutex_lock_common+0x1e3/0x2400 [ 85.875918][ T4309] mutex_lock_nested+0x17/0x20 [ 85.881518][ T4309] rfkill_register+0x33/0x8a0 [ 85.886929][ T4309] hci_register_dev+0x452/0x970 [ 85.892613][ T4309] vhci_create_device+0x32c/0x5c0 [ 85.898337][ T4309] vhci_write+0x391/0x450 [ 85.903230][ T4309] vfs_write+0x745/0xd60 [ 85.908022][ T4309] ksys_write+0x152/0x260 [ 85.912997][ T4309] do_syscall_64+0x4c/0xa0 [ 85.918126][ T4309] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 85.925120][ T4309] [ 85.925120][ T4309] -> #3 (&data->open_mutex){+.+.}-{3:3}: [ 85.933254][ T4309] __mutex_lock_common+0x1e3/0x2400 [ 85.939112][ T4309] mutex_lock_nested+0x17/0x20 [ 85.944865][ T4309] vhci_send_frame+0x88/0x100 [ 85.950471][ T4309] hci_send_frame+0x1a9/0x2e0 [ 85.955725][ T4309] hci_tx_work+0x9f9/0x1710 [ 85.961146][ T4309] process_one_work+0x85f/0x1010 [ 85.966821][ T4309] worker_thread+0xaa6/0x1290 [ 85.972230][ T4309] kthread+0x436/0x520 [ 85.976967][ T4309] ret_from_fork+0x1f/0x30 [ 85.981952][ T4309] [ 85.981952][ T4309] -> #2 ((work_completion)(&hdev->tx_work)){+.+.}-{0:0}: [ 85.991367][ T4309] __flush_work+0x116/0x210 [ 85.996664][ T4309] hci_dev_do_close+0x1e7/0x1030 [ 86.002161][ T4309] hci_unregister_dev+0x2d7/0x580 [ 86.007743][ T4309] vhci_release+0x73/0xc0 [ 86.012622][ T4309] __fput+0x234/0x930 [ 86.017157][ T4309] task_work_run+0x125/0x1a0 [ 86.022487][ T4309] do_exit+0x626/0x20c0 [ 86.028333][ T4309] do_group_exit+0x12e/0x300 [ 86.034157][ T4309] get_signal+0x6ca/0x12c0 [ 86.039129][ T4309] arch_do_signal_or_restart+0xe7/0x12c0 [ 86.045318][ T4309] exit_to_user_mode_loop+0x9e/0x130 [ 86.051331][ T4309] exit_to_user_mode_prepare+0xee/0x180 [ 86.057436][ T4309] syscall_exit_to_user_mode+0x16/0x40 [ 86.063444][ T4309] do_syscall_64+0x58/0xa0 [ 86.068399][ T4309] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 86.074842][ T4309] [ 86.074842][ T4309] -> #1 (&hdev->req_lock){+.+.}-{3:3}: [ 86.082625][ T4309] __mutex_lock_common+0x1e3/0x2400 [ 86.088575][ T4309] mutex_lock_nested+0x17/0x20 [ 86.094053][ T4309] bg_scan_update+0x44/0x3b0 [ 86.099212][ T4309] process_one_work+0x85f/0x1010 [ 86.104717][ T4309] worker_thread+0xaa6/0x1290 [ 86.110341][ T4309] kthread+0x436/0x520 [ 86.115961][ T4309] ret_from_fork+0x1f/0x30 [ 86.121072][ T4309] [ 86.121072][ T4309] -> #0 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}: [ 86.132886][ T4309] __lock_acquire+0x2c42/0x7d10 [ 86.138309][ T4309] lock_acquire+0x19e/0x400 [ 86.143514][ T4309] __flush_work+0x116/0x210 [ 86.148581][ T4309] __cancel_work_timer+0x3f4/0x560 [ 86.154254][ T4309] hci_request_cancel_all+0xcc/0x300 [ 86.160317][ T4309] hci_dev_do_close+0x4e/0x1030 [ 86.166074][ T4309] hci_rfkill_set_block+0x10a/0x190 [ 86.171842][ T4309] rfkill_set_block+0x1c6/0x420 [ 86.177268][ T4309] rfkill_fop_write+0x452/0x560 [ 86.182674][ T4309] vfs_write+0x30b/0xd60 [ 86.187480][ T4309] ksys_write+0x152/0x260 [ 86.192506][ T4309] do_syscall_64+0x4c/0xa0 [ 86.198183][ T4309] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 86.204635][ T4309] [ 86.204635][ T4309] other info that might help us debug this: [ 86.204635][ T4309] [ 86.215173][ T4309] Chain exists of: [ 86.215173][ T4309] (work_completion)(&hdev->bg_scan_update) --> &data->open_mutex --> rfkill_global_mutex [ 86.215173][ T4309] [ 86.231463][ T4309] Possible unsafe locking scenario: [ 86.231463][ T4309] [ 86.238953][ T4309] CPU0 CPU1 [ 86.244346][ T4309] ---- ---- [ 86.249733][ T4309] lock(rfkill_global_mutex); [ 86.254520][ T4309] lock(&data->open_mutex); [ 86.261740][ T4309] lock(rfkill_global_mutex); [ 86.269052][ T4309] lock((work_completion)(&hdev->bg_scan_update)); [ 86.276146][ T4309] [ 86.276146][ T4309] *** DEADLOCK *** [ 86.276146][ T4309] [ 86.284402][ T4309] 1 lock held by syz.0.17/4309: [ 86.289361][ T4309] #0: ffffffff8d6c51a8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x18b/0x560 [ 86.299778][ T4309] [ 86.299778][ T4309] stack backtrace: [ 86.305712][ T4309] CPU: 0 PID: 4309 Comm: syz.0.17 Not tainted syzkaller #0 [ 86.313103][ T4309] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026 [ 86.323289][ T4309] Call Trace: [ 86.326598][ T4309] [ 86.329557][ T4309] dump_stack_lvl+0x188/0x250 [ 86.334459][ T4309] ? load_image+0x400/0x400 [ 86.339002][ T4309] ? show_regs_print_info+0x20/0x20 [ 86.344354][ T4309] ? print_circular_bug+0x12b/0x1a0 [ 86.349597][ T4309] check_noncircular+0x296/0x330 [ 86.354662][ T4309] ? look_up_lock_class+0x71/0x110 [ 86.359818][ T4309] ? add_chain_block+0x940/0x940 [ 86.364787][ T4309] ? lockdep_lock+0xf1/0x1f0 [ 86.369410][ T4309] ? __lock_acquire+0x12e8/0x7d10 [ 86.374496][ T4309] ? mark_lock+0x94/0x320 [ 86.378945][ T4309] __lock_acquire+0x2c42/0x7d10 [ 86.383838][ T4309] ? verify_lock_unused+0x140/0x140 [ 86.389198][ T4309] ? verify_lock_unused+0x140/0x140 [ 86.394444][ T4309] ? mark_lock+0x94/0x320 [ 86.398898][ T4309] lock_acquire+0x19e/0x400 [ 86.403554][ T4309] ? __flush_work+0xfa/0x210 [ 86.408227][ T4309] ? __lock_acquire+0x7d10/0x7d10 [ 86.414026][ T4309] ? read_lock_is_recursive+0x10/0x10 [ 86.419632][ T4309] ? start_flush_work+0x776/0x820 [ 86.425157][ T4309] __flush_work+0x116/0x210 [ 86.430266][ T4309] ? __flush_work+0xfa/0x210 [ 86.435032][ T4309] ? flush_work+0x20/0x20 [ 86.439399][ T4309] ? try_to_grab_pending+0xfa/0x7f0 [ 86.444663][ T4309] ? mark_lock+0x94/0x320 [ 86.449035][ T4309] ? lockdep_hardirqs_on_prepare+0x409/0x770 [ 86.455064][ T4309] ? lock_chain_count+0x20/0x20 [ 86.459963][ T4309] ? mark_lock+0x94/0x320 [ 86.464571][ T4309] ? __cancel_work_timer+0x36a/0x560 [ 86.469977][ T4309] __cancel_work_timer+0x3f4/0x560 [ 86.475257][ T4309] ? cancel_work_sync+0x20/0x20 [ 86.480395][ T4309] ? __cancel_work+0x1f9/0x2e0 [ 86.485183][ T4309] ? lockdep_hardirqs_on+0x94/0x140 [ 86.490414][ T4309] ? __cancel_work+0x27b/0x2e0 [ 86.495226][ T4309] ? cancel_work+0x20/0x20 [ 86.499867][ T4309] ? lock_chain_count+0x20/0x20 [ 86.504753][ T4309] hci_request_cancel_all+0xcc/0x300 [ 86.510116][ T4309] hci_dev_do_close+0x4e/0x1030 [ 86.515010][ T4309] ? _raw_spin_unlock_irqrestore+0xc1/0x120 [ 86.520941][ T4309] ? _raw_spin_unlock+0x40/0x40 [ 86.526536][ T4309] hci_rfkill_set_block+0x10a/0x190 [ 86.531866][ T4309] ? rcu_lock_release+0x20/0x20 [ 86.536782][ T4309] rfkill_set_block+0x1c6/0x420 [ 86.541686][ T4309] rfkill_fop_write+0x452/0x560 [ 86.546577][ T4309] ? rfkill_fop_read+0x4d0/0x4d0 [ 86.551539][ T4309] ? common_file_perm+0x110/0x1c0 [ 86.556678][ T4309] ? fsnotify_perm+0x5d/0x560 [ 86.561385][ T4309] ? security_file_permission+0x75/0xa0 [ 86.566970][ T4309] ? rfkill_fop_read+0x4d0/0x4d0 [ 86.572048][ T4309] vfs_write+0x30b/0xd60 [ 86.576607][ T4309] ? file_end_write+0x250/0x250 [ 86.581491][ T4309] ? __context_tracking_exit+0x4c/0x80 [ 86.587122][ T4309] ? __lock_acquire+0x7d10/0x7d10 [ 86.592190][ T4309] ? __fdget_pos+0x1e2/0x370 [ 86.596812][ T4309] ksys_write+0x152/0x260 [ 86.601213][ T4309] ? __ia32_sys_read+0x80/0x80 [ 86.606024][ T4309] ? lockdep_hardirqs_on+0x94/0x140 [ 86.611357][ T4309] do_syscall_64+0x4c/0xa0 [ 86.615911][ T4309] ? clear_bhb_loop+0x30/0x80 [ 86.620613][ T4309] ? clear_bhb_loop+0x30/0x80 [ 86.625493][ T4309] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 86.631754][ T4309] RIP: 0033:0x7f83b6389799 [ 86.636205][ T4309] 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 [ 86.656046][ T4309] RSP: 002b:00007ffff38b0228 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 86.664801][ T4309] RAX: ffffffffffffffda RBX: 00007f83b6602fa0 RCX: 00007f83b6389799 [ 86.672809][ T4309] RDX: 0000000000000008 RSI: 0000200000000080 RDI: 0000000000000003 [ 86.681006][ T4309] RBP: 00007f83b641fbd9 R08: 0000000000000000 R09: 0000000000000000 [ 86.689190][ T4309] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 86.697220][ T4309] R13: 00007f83b6602fac R14: 00007f83b6602fa0 R15: 00007f83b6602fa0 [ 86.705240][ T4309] [ 86.715790][ T4190] Bluetooth: hci0: command 0x040f tx timeout [ 86.954586][ T7] cfg80211: failed to load regulatory.db