Warning: Permanently added '10.128.1.81' (ED25519) to the list of known hosts. 2026/04/11 20:02:32 parsed 1 programs [ 68.064761][ T4190] cgroup: Unknown subsys name 'net' [ 68.198200][ T4190] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size = 127995904 bytes [ 69.804292][ T4190] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k FS [ 71.325280][ T155] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 71.342856][ T155] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 71.361486][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 71.375274][ T154] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 71.375946][ T1421] ieee802154 phy0 wpan0: encryption failed: -22 [ 71.384204][ T154] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 71.389594][ T1421] ieee802154 phy1 wpan1: encryption failed: -22 [ 71.399109][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 73.899091][ T4258] chnl_net:caif_netlink_parms(): no params data found [ 74.026307][ T4258] bridge0: port 1(bridge_slave_0) entered blocking state [ 74.034711][ T4258] bridge0: port 1(bridge_slave_0) entered disabled state [ 74.043250][ T4258] device bridge_slave_0 entered promiscuous mode [ 74.058058][ T4258] bridge0: port 2(bridge_slave_1) entered blocking state [ 74.065506][ T4258] bridge0: port 2(bridge_slave_1) entered disabled state [ 74.074837][ T4258] device bridge_slave_1 entered promiscuous mode [ 74.098405][ T4258] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 74.109118][ T4258] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 74.129363][ T4258] team0: Port device team_slave_0 added [ 74.136854][ T4258] team0: Port device team_slave_1 added [ 74.152430][ T4258] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 74.159434][ T4258] 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. [ 74.185434][ T4258] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 74.197961][ T4258] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 74.204956][ T4258] 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. [ 74.230871][ T4258] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 74.258720][ T4258] device hsr_slave_0 entered promiscuous mode [ 74.265868][ T4258] device hsr_slave_1 entered promiscuous mode [ 74.348329][ T4258] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 74.359775][ T4258] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 74.368787][ T4258] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 74.377519][ T4258] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 74.397857][ T4258] bridge0: port 2(bridge_slave_1) entered blocking state [ 74.405131][ T4258] bridge0: port 2(bridge_slave_1) entered forwarding state [ 74.413090][ T4258] bridge0: port 1(bridge_slave_0) entered blocking state [ 74.420150][ T4258] bridge0: port 1(bridge_slave_0) entered forwarding state [ 74.463816][ T4258] 8021q: adding VLAN 0 to HW filter on device bond0 [ 74.477078][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 74.486306][ T9] bridge0: port 1(bridge_slave_0) entered disabled state [ 74.494736][ T9] bridge0: port 2(bridge_slave_1) entered disabled state [ 74.508433][ T4258] 8021q: adding VLAN 0 to HW filter on device team0 [ 74.519567][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 74.528197][ T9] bridge0: port 1(bridge_slave_0) entered blocking state [ 74.535303][ T9] bridge0: port 1(bridge_slave_0) entered forwarding state [ 74.553250][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 74.561781][ T9] bridge0: port 2(bridge_slave_1) entered blocking state [ 74.568884][ T9] bridge0: port 2(bridge_slave_1) entered forwarding state [ 74.581088][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 74.590377][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 74.621936][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 74.634660][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 74.646821][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 74.660242][ T4258] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 74.764592][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 74.773912][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 74.808506][ T4258] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 74.824551][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 74.834374][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 74.871157][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 74.880676][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 74.890777][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 74.898882][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 74.908931][ T4258] device veth0_vlan entered promiscuous mode [ 74.922372][ T4258] device veth1_vlan entered promiscuous mode [ 74.954959][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 74.964351][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 74.973802][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 74.983265][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 74.995710][ T4258] device veth0_macvtap entered promiscuous mode [ 75.021924][ T4258] device veth1_macvtap entered promiscuous mode [ 75.038359][ T4258] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 75.046395][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 75.058931][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 75.067012][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 75.075919][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 75.109833][ T4258] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 75.119075][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 75.128020][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 75.138761][ T4258] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 75.148316][ T4258] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 75.158645][ T4258] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 75.167824][ T4258] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 2026/04/11 20:02:41 executed programs: 0 [ 76.061219][ T4299] chnl_net:caif_netlink_parms(): no params data found [ 76.132201][ T4299] bridge0: port 1(bridge_slave_0) entered blocking state [ 76.142076][ T4299] bridge0: port 1(bridge_slave_0) entered disabled state [ 76.150784][ T4299] device bridge_slave_0 entered promiscuous mode [ 76.162800][ T4299] bridge0: port 2(bridge_slave_1) entered blocking state [ 76.169952][ T4299] bridge0: port 2(bridge_slave_1) entered disabled state [ 76.181344][ T4299] device bridge_slave_1 entered promiscuous mode [ 76.211226][ T4299] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 76.223790][ T4299] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 76.255023][ T4299] team0: Port device team_slave_0 added [ 76.264757][ T4299] team0: Port device team_slave_1 added [ 76.294756][ T4299] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 76.301751][ T4299] 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. [ 76.331196][ T4299] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 76.349845][ T4299] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 76.357146][ T4299] 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. [ 76.383336][ T4299] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 76.423663][ T4299] device hsr_slave_0 entered promiscuous mode [ 76.431601][ T4299] device hsr_slave_1 entered promiscuous mode [ 76.440947][ T4299] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 76.449245][ T4299] Cannot create hsr debugfs directory [ 76.542399][ T4299] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 76.635629][ T154] ODEBUG: Out of memory. ODEBUG disabled [ 77.933689][ T4221] Bluetooth: hci0: command 0x0409 tx timeout [ 79.427341][ T4299] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 80.014872][ T4192] Bluetooth: hci0: command 0x041b tx timeout [ 80.023317][ T4299] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 80.079525][ T4299] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 80.190134][ T4299] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 80.198947][ T4299] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 80.209012][ T4299] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 80.222963][ T4299] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 80.271438][ T4299] 8021q: adding VLAN 0 to HW filter on device bond0 [ 80.285094][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 80.293301][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 80.309695][ T4299] 8021q: adding VLAN 0 to HW filter on device team0 [ 80.319093][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 80.327958][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 80.336577][ T9] bridge0: port 1(bridge_slave_0) entered blocking state [ 80.343772][ T9] bridge0: port 1(bridge_slave_0) entered forwarding state [ 80.355592][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 80.364940][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 80.374399][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 80.383242][ T9] bridge0: port 2(bridge_slave_1) entered blocking state [ 80.390292][ T9] bridge0: port 2(bridge_slave_1) entered forwarding state [ 80.409653][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 80.422010][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 80.434963][ T1285] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 80.444752][ T1285] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 80.463316][ T1285] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 80.473056][ T1285] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 80.481712][ T1285] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 80.494045][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 80.502837][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 80.521663][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 80.530509][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 80.540571][ T4299] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 80.600500][ T154] device hsr_slave_0 left promiscuous mode [ 80.609065][ T154] device hsr_slave_1 left promiscuous mode [ 80.616319][ T154] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 80.624264][ T154] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 80.633506][ T154] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 80.640931][ T154] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 80.648879][ T154] device bridge_slave_1 left promiscuous mode [ 80.656669][ T154] bridge0: port 2(bridge_slave_1) entered disabled state [ 80.667892][ T154] device bridge_slave_0 left promiscuous mode [ 80.675509][ T154] bridge0: port 1(bridge_slave_0) entered disabled state [ 80.691009][ T154] device veth1_macvtap left promiscuous mode [ 80.697464][ T154] device veth0_macvtap left promiscuous mode [ 80.704430][ T154] device veth1_vlan left promiscuous mode [ 80.710475][ T154] device veth0_vlan left promiscuous mode [ 80.829948][ T154] team0 (unregistering): Port device team_slave_1 removed [ 80.841591][ T154] team0 (unregistering): Port device team_slave_0 removed [ 80.855316][ T154] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 80.869062][ T154] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 80.916056][ T154] bond0 (unregistering): Released all slaves [ 80.963768][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 80.971245][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 80.984878][ T4299] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 81.000537][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 81.009478][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 81.026217][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 81.034693][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 81.046851][ T4299] device veth0_vlan entered promiscuous mode [ 81.053937][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 81.061650][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 81.077971][ T4299] device veth1_vlan entered promiscuous mode [ 81.104256][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 81.112392][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 81.120613][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 81.129581][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 81.142081][ T4299] device veth0_macvtap entered promiscuous mode [ 81.153165][ T4299] device veth1_macvtap entered promiscuous mode [ 81.176880][ T4299] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 81.184743][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 81.192979][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 81.201058][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 81.210020][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 81.221508][ T4299] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 81.231912][ T4299] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 81.240717][ T4299] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 81.249787][ T4299] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 81.258656][ T4299] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 81.270495][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 81.279557][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 81.342166][ T155] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 81.353348][ T155] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 81.375187][ T1285] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 81.384543][ T155] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 81.394019][ T155] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 81.401691][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 81.506039][ T4311] [ 81.508428][ T4311] ====================================================== [ 81.515467][ T4311] WARNING: possible circular locking dependency detected [ 81.522506][ T4311] syzkaller #0 Not tainted [ 81.526948][ T4311] ------------------------------------------------------ [ 81.533988][ T4311] syz.0.17/4311 is trying to acquire lock: [ 81.539820][ T4311] ffff88801f4acc28 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}, at: __flush_work+0xfa/0x210 [ 81.551085][ T4311] [ 81.551085][ T4311] but task is already holding lock: [ 81.558476][ T4311] ffffffff8d6c51a8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x18b/0x560 [ 81.568378][ T4311] [ 81.568378][ T4311] which lock already depends on the new lock. [ 81.568378][ T4311] [ 81.579064][ T4311] [ 81.579064][ T4311] the existing dependency chain (in reverse order) is: [ 81.588095][ T4311] [ 81.588095][ T4311] -> #4 (rfkill_global_mutex){+.+.}-{3:3}: [ 81.596360][ T4311] __mutex_lock_common+0x1e3/0x2400 [ 81.602114][ T4311] mutex_lock_nested+0x17/0x20 [ 81.607429][ T4311] rfkill_register+0x33/0x8a0 [ 81.612756][ T4311] hci_register_dev+0x452/0x970 [ 81.618243][ T4311] vhci_create_device+0x32c/0x5c0 [ 81.623803][ T4311] vhci_write+0x391/0x450 [ 81.628676][ T4311] vfs_write+0x745/0xd60 [ 81.633458][ T4311] ksys_write+0x152/0x260 [ 81.638329][ T4311] do_syscall_64+0x4c/0xa0 [ 81.643291][ T4311] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 81.649729][ T4311] [ 81.649729][ T4311] -> #3 (&data->open_mutex){+.+.}-{3:3}: [ 81.657743][ T4311] __mutex_lock_common+0x1e3/0x2400 [ 81.663488][ T4311] mutex_lock_nested+0x17/0x20 [ 81.668798][ T4311] vhci_send_frame+0x88/0x100 [ 81.674020][ T4311] hci_send_frame+0x1a9/0x2e0 [ 81.679241][ T4311] hci_tx_work+0x9f9/0x1710 [ 81.684278][ T4311] process_one_work+0x85f/0x1010 [ 81.689770][ T4311] worker_thread+0xaa6/0x1290 [ 81.694994][ T4311] kthread+0x436/0x520 [ 81.699603][ T4311] ret_from_fork+0x1f/0x30 [ 81.704552][ T4311] [ 81.704552][ T4311] -> #2 ((work_completion)(&hdev->tx_work)){+.+.}-{0:0}: [ 81.713783][ T4311] __flush_work+0x116/0x210 [ 81.718836][ T4311] hci_dev_do_close+0x1e7/0x1030 [ 81.724326][ T4311] hci_unregister_dev+0x2d7/0x580 [ 81.729892][ T4311] vhci_release+0x73/0xc0 [ 81.734789][ T4311] __fput+0x234/0x930 [ 81.739314][ T4311] task_work_run+0x125/0x1a0 [ 81.744537][ T4311] do_exit+0x626/0x20c0 [ 81.749235][ T4311] do_group_exit+0x12e/0x300 [ 81.754373][ T4311] get_signal+0x6ca/0x12c0 [ 81.759326][ T4311] arch_do_signal_or_restart+0xe7/0x12c0 [ 81.765601][ T4311] exit_to_user_mode_loop+0x9e/0x130 [ 81.771518][ T4311] exit_to_user_mode_prepare+0xee/0x180 [ 81.777714][ T4311] syscall_exit_to_user_mode+0x16/0x40 [ 81.783713][ T4311] do_syscall_64+0x58/0xa0 [ 81.788757][ T4311] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 81.795226][ T4311] [ 81.795226][ T4311] -> #1 (&hdev->req_lock){+.+.}-{3:3}: [ 81.802898][ T4311] __mutex_lock_common+0x1e3/0x2400 [ 81.808637][ T4311] mutex_lock_nested+0x17/0x20 [ 81.813944][ T4311] bg_scan_update+0x44/0x3b0 [ 81.819230][ T4311] process_one_work+0x85f/0x1010 [ 81.824703][ T4311] worker_thread+0xaa6/0x1290 [ 81.829911][ T4311] kthread+0x436/0x520 [ 81.834508][ T4311] ret_from_fork+0x1f/0x30 [ 81.839488][ T4311] [ 81.839488][ T4311] -> #0 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}: [ 81.849319][ T4311] __lock_acquire+0x2c42/0x7d10 [ 81.854710][ T4311] lock_acquire+0x19e/0x400 [ 81.859838][ T4311] __flush_work+0x116/0x210 [ 81.864876][ T4311] __cancel_work_timer+0x3f4/0x560 [ 81.870530][ T4311] hci_request_cancel_all+0xcc/0x300 [ 81.876667][ T4311] hci_dev_do_close+0x4e/0x1030 [ 81.882062][ T4311] hci_rfkill_set_block+0x10a/0x190 [ 81.887796][ T4311] rfkill_set_block+0x1c6/0x420 [ 81.893194][ T4311] rfkill_fop_write+0x452/0x560 [ 81.898598][ T4311] vfs_write+0x30b/0xd60 [ 81.903372][ T4311] ksys_write+0x152/0x260 [ 81.908248][ T4311] do_syscall_64+0x4c/0xa0 [ 81.913205][ T4311] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 81.919646][ T4311] [ 81.919646][ T4311] other info that might help us debug this: [ 81.919646][ T4311] [ 81.929887][ T4311] Chain exists of: [ 81.929887][ T4311] (work_completion)(&hdev->bg_scan_update) --> &data->open_mutex --> rfkill_global_mutex [ 81.929887][ T4311] [ 81.945811][ T4311] Possible unsafe locking scenario: [ 81.945811][ T4311] [ 81.953277][ T4311] CPU0 CPU1 [ 81.958650][ T4311] ---- ---- [ 81.964022][ T4311] lock(rfkill_global_mutex); [ 81.968810][ T4311] lock(&data->open_mutex); [ 81.976115][ T4311] lock(rfkill_global_mutex); [ 81.983425][ T4311] lock((work_completion)(&hdev->bg_scan_update)); [ 81.990049][ T4311] [ 81.990049][ T4311] *** DEADLOCK *** [ 81.990049][ T4311] [ 81.998199][ T4311] 1 lock held by syz.0.17/4311: [ 82.003073][ T4311] #0: ffffffff8d6c51a8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x18b/0x560 [ 82.013206][ T4311] [ 82.013206][ T4311] stack backtrace: [ 82.019123][ T4311] CPU: 0 PID: 4311 Comm: syz.0.17 Not tainted syzkaller #0 [ 82.026380][ T4311] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 82.036473][ T4311] Call Trace: [ 82.039774][ T4311] [ 82.042742][ T4311] dump_stack_lvl+0x188/0x250 [ 82.047438][ T4311] ? load_image+0x400/0x400 [ 82.051955][ T4311] ? show_regs_print_info+0x20/0x20 [ 82.057183][ T4311] ? print_circular_bug+0x12b/0x1a0 [ 82.062737][ T4311] check_noncircular+0x296/0x330 [ 82.067897][ T4311] ? look_up_lock_class+0x71/0x110 [ 82.073030][ T4311] ? add_chain_block+0x940/0x940 [ 82.077986][ T4311] ? lockdep_lock+0xf1/0x1f0 [ 82.082695][ T4311] ? __lock_acquire+0x12e8/0x7d10 [ 82.087828][ T4311] ? mark_lock+0x94/0x320 [ 82.092159][ T4311] __lock_acquire+0x2c42/0x7d10 [ 82.097065][ T4311] ? rcu_lock_release+0x5/0x20 [ 82.101924][ T4311] ? verify_lock_unused+0x140/0x140 [ 82.107141][ T4311] ? mark_lock+0x94/0x320 [ 82.111482][ T4311] lock_acquire+0x19e/0x400 [ 82.116005][ T4311] ? __flush_work+0xfa/0x210 [ 82.120598][ T4311] ? __lock_acquire+0x7d10/0x7d10 [ 82.125645][ T4311] ? read_lock_is_recursive+0x10/0x10 [ 82.131022][ T4311] ? start_flush_work+0x776/0x820 [ 82.136049][ T4311] __flush_work+0x116/0x210 [ 82.140573][ T4311] ? __flush_work+0xfa/0x210 [ 82.145189][ T4311] ? flush_work+0x20/0x20 [ 82.149535][ T4311] ? try_to_grab_pending+0xfa/0x7f0 [ 82.154825][ T4311] ? mark_lock+0x94/0x320 [ 82.159180][ T4311] ? lockdep_hardirqs_on_prepare+0x409/0x770 [ 82.165169][ T4311] ? lock_chain_count+0x20/0x20 [ 82.170021][ T4311] ? mark_lock+0x94/0x320 [ 82.174345][ T4311] ? __cancel_work_timer+0x36a/0x560 [ 82.179632][ T4311] __cancel_work_timer+0x3f4/0x560 [ 82.184744][ T4311] ? cancel_work_sync+0x20/0x20 [ 82.189615][ T4311] ? __cancel_work+0x1f9/0x2e0 [ 82.194380][ T4311] ? lockdep_hardirqs_on+0x94/0x140 [ 82.199584][ T4311] ? __cancel_work+0x27b/0x2e0 [ 82.204539][ T4311] ? cancel_work+0x20/0x20 [ 82.209006][ T4311] ? lock_chain_count+0x20/0x20 [ 82.213989][ T4311] hci_request_cancel_all+0xcc/0x300 [ 82.219428][ T4311] hci_dev_do_close+0x4e/0x1030 [ 82.224285][ T4311] ? _raw_spin_unlock_irqrestore+0xc1/0x120 [ 82.230371][ T4311] ? _raw_spin_unlock+0x40/0x40 [ 82.235222][ T4311] hci_rfkill_set_block+0x10a/0x190 [ 82.240519][ T4311] ? rcu_lock_release+0x20/0x20 [ 82.245470][ T4311] rfkill_set_block+0x1c6/0x420 [ 82.250328][ T4311] rfkill_fop_write+0x452/0x560 [ 82.255183][ T4311] ? rfkill_fop_read+0x4d0/0x4d0 [ 82.260121][ T4311] ? common_file_perm+0x110/0x1c0 [ 82.265150][ T4311] ? fsnotify_perm+0x5d/0x560 [ 82.269827][ T4311] ? security_file_permission+0x75/0xa0 [ 82.275399][ T4311] ? rfkill_fop_read+0x4d0/0x4d0 [ 82.280339][ T4311] vfs_write+0x30b/0xd60 [ 82.284583][ T4311] ? file_end_write+0x250/0x250 [ 82.289464][ T4311] ? __context_tracking_exit+0x4c/0x80 [ 82.294925][ T4311] ? __lock_acquire+0x7d10/0x7d10 [ 82.299954][ T4311] ? __fdget_pos+0x1e2/0x370 [ 82.304635][ T4311] ksys_write+0x152/0x260 [ 82.308966][ T4311] ? __ia32_sys_read+0x80/0x80 [ 82.313735][ T4311] ? lockdep_hardirqs_on+0x94/0x140 [ 82.318938][ T4311] do_syscall_64+0x4c/0xa0 [ 82.323357][ T4311] ? clear_bhb_loop+0x30/0x80 [ 82.328120][ T4311] ? clear_bhb_loop+0x30/0x80 [ 82.332880][ T4311] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 82.338770][ T4311] RIP: 0033:0x7fe3ecc5a819 [ 82.343191][ T4311] 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 [ 82.362795][ T4311] RSP: 002b:00007fffb0d8b088 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 82.371211][ T4311] RAX: ffffffffffffffda RBX: 00007fe3eced3fa0 RCX: 00007fe3ecc5a819 [ 82.379355][ T4311] RDX: 0000000000000008 RSI: 0000200000000180 RDI: 0000000000000003 [ 82.387346][ T4311] RBP: 00007fe3eccf0c91 R08: 0000000000000000 R09: 0000000000000000 [ 82.395416][ T4311] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 82.403385][ T4311] R13: 00007fe3eced3fac R14: 00007fe3eced3fa0 R15: 00007fe3eced3fa0 [ 82.411534][ T4311] [ 82.433111][ T4284] Bluetooth: hci0: command 0x040f tx timeout