Warning: Permanently added '10.128.0.40' (ED25519) to the list of known hosts. 2026/04/04 09:25:18 parsed 1 programs [ 64.114740][ T4188] cgroup: Unknown subsys name 'net' [ 64.256890][ T4188] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size = 127995904 bytes [ 65.716240][ T4188] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k FS [ 67.380412][ T144] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 67.389956][ T144] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 67.400281][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 67.422592][ T9] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 67.430440][ T9] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 67.438351][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 69.532312][ T4264] chnl_net:caif_netlink_parms(): no params data found [ 69.573535][ T4264] bridge0: port 1(bridge_slave_0) entered blocking state [ 69.581641][ T4264] bridge0: port 1(bridge_slave_0) entered disabled state [ 69.589438][ T4264] device bridge_slave_0 entered promiscuous mode [ 69.598933][ T4264] bridge0: port 2(bridge_slave_1) entered blocking state [ 69.606059][ T4264] bridge0: port 2(bridge_slave_1) entered disabled state [ 69.613958][ T4264] device bridge_slave_1 entered promiscuous mode [ 69.633309][ T4264] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 69.644106][ T4264] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 69.666332][ T4264] team0: Port device team_slave_0 added [ 69.673541][ T4264] team0: Port device team_slave_1 added [ 69.689952][ T4264] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 69.697055][ T4264] 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. [ 69.723725][ T4264] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 69.736070][ T4264] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 69.743167][ T4264] 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. [ 69.769513][ T4264] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 69.797975][ T4264] device hsr_slave_0 entered promiscuous mode [ 69.804704][ T4264] device hsr_slave_1 entered promiscuous mode [ 69.922427][ T4264] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 69.934307][ T4264] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 69.944124][ T4264] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 69.954274][ T4264] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 69.994385][ T4264] bridge0: port 2(bridge_slave_1) entered blocking state [ 70.001638][ T4264] bridge0: port 2(bridge_slave_1) entered forwarding state [ 70.010254][ T4264] bridge0: port 1(bridge_slave_0) entered blocking state [ 70.017499][ T4264] bridge0: port 1(bridge_slave_0) entered forwarding state [ 70.076965][ T4264] 8021q: adding VLAN 0 to HW filter on device bond0 [ 70.090710][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 70.104429][ T9] bridge0: port 1(bridge_slave_0) entered disabled state [ 70.112711][ T9] bridge0: port 2(bridge_slave_1) entered disabled state [ 70.120460][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 70.134916][ T4264] 8021q: adding VLAN 0 to HW filter on device team0 [ 70.155907][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 70.164668][ T9] bridge0: port 1(bridge_slave_0) entered blocking state [ 70.171823][ T9] bridge0: port 1(bridge_slave_0) entered forwarding state [ 70.191025][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 70.199998][ T9] bridge0: port 2(bridge_slave_1) entered blocking state [ 70.207296][ T9] bridge0: port 2(bridge_slave_1) entered forwarding state [ 70.221717][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 70.252664][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 70.264973][ T4270] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 70.277344][ T4270] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 70.288879][ T4270] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 70.300100][ T4264] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 70.408001][ T4270] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 70.416438][ T4270] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 70.428432][ T4264] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 70.462820][ T4270] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 70.481503][ T4270] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 70.490044][ T4270] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 70.498197][ T4270] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 70.508945][ T4264] device veth0_vlan entered promiscuous mode [ 70.536371][ T4264] device veth1_vlan entered promiscuous mode [ 70.557420][ T4270] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 70.566464][ T4270] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 70.578425][ T4264] device veth0_macvtap entered promiscuous mode [ 70.597817][ T4264] device veth1_macvtap entered promiscuous mode [ 70.623877][ T4264] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 70.632589][ T4270] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 70.640680][ T4270] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 70.648965][ T4270] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 70.658267][ T4270] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 70.673572][ T4264] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 70.698696][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 70.707575][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 70.719392][ T4264] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 70.729517][ T4264] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 70.738545][ T4264] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 70.747582][ T4264] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 70.885693][ T4264] syz-executor (4264) used greatest stack depth: 20472 bytes left [ 71.344662][ T1431] ieee802154 phy0 wpan0: encryption failed: -22 [ 71.351723][ T1431] ieee802154 phy1 wpan1: encryption failed: -22 2026/04/04 09:25:27 executed programs: 0 [ 71.948079][ T4292] chnl_net:caif_netlink_parms(): no params data found [ 72.016347][ T4292] bridge0: port 1(bridge_slave_0) entered blocking state [ 72.023689][ T4292] bridge0: port 1(bridge_slave_0) entered disabled state [ 72.032326][ T4292] device bridge_slave_0 entered promiscuous mode [ 72.044199][ T4292] bridge0: port 2(bridge_slave_1) entered blocking state [ 72.051434][ T4292] bridge0: port 2(bridge_slave_1) entered disabled state [ 72.059687][ T4292] device bridge_slave_1 entered promiscuous mode [ 72.090061][ T4292] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 72.103652][ T4292] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 72.129527][ T4292] team0: Port device team_slave_0 added [ 72.137166][ T4292] team0: Port device team_slave_1 added [ 72.158125][ T4292] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 72.165254][ T4292] 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. [ 72.191671][ T4292] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 72.204889][ T4292] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 72.212232][ T4292] 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. [ 72.238834][ T4292] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 72.288518][ T4292] device hsr_slave_0 entered promiscuous mode [ 72.297205][ T4292] device hsr_slave_1 entered promiscuous mode [ 72.306844][ T4292] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 72.315277][ T4292] Cannot create hsr debugfs directory [ 72.402985][ T4292] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 73.822380][ T4255] Bluetooth: hci0: command 0x0409 tx timeout [ 75.187558][ T4292] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 75.417133][ T4292] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 75.487958][ T4292] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 75.593614][ T4292] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 75.603888][ T4292] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 75.626413][ T4292] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 75.635679][ T4292] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 75.695385][ T4292] 8021q: adding VLAN 0 to HW filter on device bond0 [ 75.706797][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 75.715449][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 75.726141][ T4292] 8021q: adding VLAN 0 to HW filter on device team0 [ 75.740522][ T145] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 75.749370][ T145] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 75.757985][ T145] bridge0: port 1(bridge_slave_0) entered blocking state [ 75.765061][ T145] bridge0: port 1(bridge_slave_0) entered forwarding state [ 75.774628][ T145] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 75.795006][ T145] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 75.803756][ T145] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 75.814005][ T145] bridge0: port 2(bridge_slave_1) entered blocking state [ 75.821151][ T145] bridge0: port 2(bridge_slave_1) entered forwarding state [ 75.834459][ T145] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 75.860593][ T145] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 75.873169][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 75.883069][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 75.891684][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 75.902420][ T4258] Bluetooth: hci0: command 0x041b tx timeout [ 75.910974][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 75.920226][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 75.934805][ T4292] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 75.945500][ T4292] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 75.957251][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 75.966068][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 75.974737][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 75.983610][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 75.992639][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 76.101459][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 76.108908][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 76.122716][ T4292] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 76.150827][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 76.160449][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 76.179808][ T4292] device veth0_vlan entered promiscuous mode [ 76.186786][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 76.195746][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 76.207780][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 76.217040][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 76.231009][ T405] device hsr_slave_0 left promiscuous mode [ 76.237803][ T405] device hsr_slave_1 left promiscuous mode [ 76.244537][ T405] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 76.252692][ T405] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 76.260679][ T405] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 76.268209][ T405] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 76.275845][ T405] device bridge_slave_1 left promiscuous mode [ 76.283357][ T405] bridge0: port 2(bridge_slave_1) entered disabled state [ 76.297450][ T405] device bridge_slave_0 left promiscuous mode [ 76.305571][ T405] bridge0: port 1(bridge_slave_0) entered disabled state [ 76.321568][ T405] device veth1_macvtap left promiscuous mode [ 76.327849][ T405] device veth0_macvtap left promiscuous mode [ 76.334866][ T405] device veth1_vlan left promiscuous mode [ 76.340763][ T405] device veth0_vlan left promiscuous mode [ 76.486538][ T405] team0 (unregistering): Port device team_slave_1 removed [ 76.502979][ T405] team0 (unregistering): Port device team_slave_0 removed [ 76.515130][ T405] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 76.528012][ T405] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 76.584257][ T405] bond0 (unregistering): Released all slaves [ 76.638776][ T4292] device veth1_vlan entered promiscuous mode [ 76.659043][ T145] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 76.667321][ T145] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 76.676781][ T145] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 76.685417][ T145] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 76.698749][ T4292] device veth0_macvtap entered promiscuous mode [ 76.709287][ T4292] device veth1_macvtap entered promiscuous mode [ 76.717779][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 76.726111][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 76.742719][ T4292] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 76.750219][ T145] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 76.759554][ T145] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 76.772134][ T4292] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 76.782420][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 76.793732][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 76.809504][ T4292] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 76.825132][ T4292] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 76.834149][ T4292] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 76.843179][ T4292] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 76.919540][ T145] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 76.940446][ T9] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 76.940753][ T145] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 76.952656][ T9] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 76.959818][ T145] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 76.974455][ T145] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 77.091813][ T4307] [ 77.095623][ T4307] ====================================================== [ 77.109770][ T4307] WARNING: possible circular locking dependency detected [ 77.122184][ T4307] syzkaller #0 Not tainted [ 77.131487][ T4307] ------------------------------------------------------ [ 77.139487][ T4307] syz.0.17/4307 is trying to acquire lock: [ 77.145321][ T4307] ffff888025db0c28 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}, at: __flush_work+0xfa/0x210 [ 77.156408][ T4307] [ 77.156408][ T4307] but task is already holding lock: [ 77.164055][ T4307] ffffffff8d6c51a8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x18b/0x560 [ 77.173861][ T4307] [ 77.173861][ T4307] which lock already depends on the new lock. [ 77.173861][ T4307] [ 77.184370][ T4307] [ 77.184370][ T4307] the existing dependency chain (in reverse order) is: [ 77.193628][ T4307] [ 77.193628][ T4307] -> #4 (rfkill_global_mutex){+.+.}-{3:3}: [ 77.201668][ T4307] __mutex_lock_common+0x1e3/0x2400 [ 77.207532][ T4307] mutex_lock_nested+0x17/0x20 [ 77.212858][ T4307] rfkill_register+0x33/0x8a0 [ 77.218087][ T4307] hci_register_dev+0x452/0x970 [ 77.223574][ T4307] vhci_create_device+0x32c/0x5c0 [ 77.229167][ T4307] vhci_write+0x391/0x450 [ 77.234133][ T4307] vfs_write+0x745/0xd60 [ 77.239006][ T4307] ksys_write+0x152/0x260 [ 77.243972][ T4307] do_syscall_64+0x4c/0xa0 [ 77.248934][ T4307] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 77.255376][ T4307] [ 77.255376][ T4307] -> #3 (&data->open_mutex){+.+.}-{3:3}: [ 77.263219][ T4307] __mutex_lock_common+0x1e3/0x2400 [ 77.268968][ T4307] mutex_lock_nested+0x17/0x20 [ 77.274274][ T4307] vhci_send_frame+0x88/0x100 [ 77.279504][ T4307] hci_send_frame+0x1a9/0x2e0 [ 77.284920][ T4307] hci_tx_work+0x9f9/0x1710 [ 77.289974][ T4307] process_one_work+0x85f/0x1010 [ 77.295468][ T4307] worker_thread+0xaa6/0x1290 [ 77.300789][ T4307] kthread+0x436/0x520 [ 77.305412][ T4307] ret_from_fork+0x1f/0x30 [ 77.310375][ T4307] [ 77.310375][ T4307] -> #2 ((work_completion)(&hdev->tx_work)){+.+.}-{0:0}: [ 77.319611][ T4307] __flush_work+0x116/0x210 [ 77.324693][ T4307] hci_dev_do_close+0x1e7/0x1030 [ 77.330175][ T4307] hci_unregister_dev+0x2d7/0x580 [ 77.335745][ T4307] vhci_release+0x73/0xc0 [ 77.340618][ T4307] __fput+0x234/0x930 [ 77.345149][ T4307] task_work_run+0x125/0x1a0 [ 77.350283][ T4307] do_exit+0x626/0x20c0 [ 77.355061][ T4307] do_group_exit+0x12e/0x300 [ 77.360231][ T4307] get_signal+0x6ca/0x12c0 [ 77.365196][ T4307] arch_do_signal_or_restart+0xe7/0x12c0 [ 77.371468][ T4307] exit_to_user_mode_loop+0x9e/0x130 [ 77.377297][ T4307] exit_to_user_mode_prepare+0xee/0x180 [ 77.383395][ T4307] syscall_exit_to_user_mode+0x16/0x40 [ 77.389411][ T4307] do_syscall_64+0x58/0xa0 [ 77.394391][ T4307] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 77.400834][ T4307] [ 77.400834][ T4307] -> #1 (&hdev->req_lock){+.+.}-{3:3}: [ 77.408521][ T4307] __mutex_lock_common+0x1e3/0x2400 [ 77.414367][ T4307] mutex_lock_nested+0x17/0x20 [ 77.419684][ T4307] bg_scan_update+0x44/0x3b0 [ 77.424826][ T4307] process_one_work+0x85f/0x1010 [ 77.430316][ T4307] worker_thread+0xaa6/0x1290 [ 77.435547][ T4307] kthread+0x436/0x520 [ 77.440161][ T4307] ret_from_fork+0x1f/0x30 [ 77.445188][ T4307] [ 77.445188][ T4307] -> #0 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}: [ 77.455040][ T4307] __lock_acquire+0x2c42/0x7d10 [ 77.460557][ T4307] lock_acquire+0x19e/0x400 [ 77.465621][ T4307] __flush_work+0x116/0x210 [ 77.470672][ T4307] __cancel_work_timer+0x3f4/0x560 [ 77.476678][ T4307] hci_request_cancel_all+0xcc/0x300 [ 77.482525][ T4307] hci_dev_do_close+0x4e/0x1030 [ 77.487924][ T4307] hci_rfkill_set_block+0x10a/0x190 [ 77.493675][ T4307] rfkill_set_block+0x1c6/0x420 [ 77.499086][ T4307] rfkill_fop_write+0x452/0x560 [ 77.504497][ T4307] vfs_write+0x30b/0xd60 [ 77.509291][ T4307] ksys_write+0x152/0x260 [ 77.514336][ T4307] do_syscall_64+0x4c/0xa0 [ 77.519304][ T4307] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 77.525754][ T4307] [ 77.525754][ T4307] other info that might help us debug this: [ 77.525754][ T4307] [ 77.535999][ T4307] Chain exists of: [ 77.535999][ T4307] (work_completion)(&hdev->bg_scan_update) --> &data->open_mutex --> rfkill_global_mutex [ 77.535999][ T4307] [ 77.552024][ T4307] Possible unsafe locking scenario: [ 77.552024][ T4307] [ 77.559491][ T4307] CPU0 CPU1 [ 77.564873][ T4307] ---- ---- [ 77.570299][ T4307] lock(rfkill_global_mutex); [ 77.575102][ T4307] lock(&data->open_mutex); [ 77.582461][ T4307] lock(rfkill_global_mutex); [ 77.589765][ T4307] lock((work_completion)(&hdev->bg_scan_update)); [ 77.596380][ T4307] [ 77.596380][ T4307] *** DEADLOCK *** [ 77.596380][ T4307] [ 77.604539][ T4307] 1 lock held by syz.0.17/4307: [ 77.609416][ T4307] #0: ffffffff8d6c51a8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x18b/0x560 [ 77.619640][ T4307] [ 77.619640][ T4307] stack backtrace: [ 77.625553][ T4307] CPU: 1 PID: 4307 Comm: syz.0.17 Not tainted syzkaller #0 [ 77.632772][ T4307] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026 [ 77.642934][ T4307] Call Trace: [ 77.646237][ T4307] [ 77.649205][ T4307] dump_stack_lvl+0x188/0x250 [ 77.653910][ T4307] ? load_image+0x400/0x400 [ 77.658526][ T4307] ? show_regs_print_info+0x20/0x20 [ 77.663753][ T4307] ? print_circular_bug+0x12b/0x1a0 [ 77.668983][ T4307] check_noncircular+0x296/0x330 [ 77.673952][ T4307] ? look_up_lock_class+0x71/0x110 [ 77.679095][ T4307] ? add_chain_block+0x940/0x940 [ 77.684071][ T4307] ? lockdep_lock+0xf1/0x1f0 [ 77.688698][ T4307] ? __lock_acquire+0x12e8/0x7d10 [ 77.693761][ T4307] ? mark_lock+0x94/0x320 [ 77.698115][ T4307] __lock_acquire+0x2c42/0x7d10 [ 77.703104][ T4307] ? verify_lock_unused+0x140/0x140 [ 77.708430][ T4307] ? verify_lock_unused+0x140/0x140 [ 77.713770][ T4307] ? mark_lock+0x94/0x320 [ 77.718136][ T4307] lock_acquire+0x19e/0x400 [ 77.722669][ T4307] ? __flush_work+0xfa/0x210 [ 77.727458][ T4307] ? __lock_acquire+0x7d10/0x7d10 [ 77.732513][ T4307] ? read_lock_is_recursive+0x10/0x10 [ 77.737923][ T4307] ? start_flush_work+0x776/0x820 [ 77.743616][ T4307] __flush_work+0x116/0x210 [ 77.748141][ T4307] ? __flush_work+0xfa/0x210 [ 77.752755][ T4307] ? flush_work+0x20/0x20 [ 77.757109][ T4307] ? try_to_grab_pending+0xfa/0x7f0 [ 77.762417][ T4307] ? mark_lock+0x94/0x320 [ 77.766771][ T4307] ? lockdep_hardirqs_on_prepare+0x409/0x770 [ 77.772871][ T4307] ? lock_chain_count+0x20/0x20 [ 77.777897][ T4307] ? mark_lock+0x94/0x320 [ 77.782249][ T4307] ? __cancel_work_timer+0x36a/0x560 [ 77.787574][ T4307] __cancel_work_timer+0x3f4/0x560 [ 77.792708][ T4307] ? cancel_work_sync+0x20/0x20 [ 77.797753][ T4307] ? __cancel_work+0x1f9/0x2e0 [ 77.802541][ T4307] ? lockdep_hardirqs_on+0x94/0x140 [ 77.808065][ T4307] ? __cancel_work+0x27b/0x2e0 [ 77.812855][ T4307] ? cancel_work+0x20/0x20 [ 77.817304][ T4307] ? lock_chain_count+0x20/0x20 [ 77.822191][ T4307] hci_request_cancel_all+0xcc/0x300 [ 77.827704][ T4307] hci_dev_do_close+0x4e/0x1030 [ 77.832584][ T4307] ? _raw_spin_unlock_irqrestore+0xc1/0x120 [ 77.838590][ T4307] ? _raw_spin_unlock+0x40/0x40 [ 77.843474][ T4307] hci_rfkill_set_block+0x10a/0x190 [ 77.848701][ T4307] ? rcu_lock_release+0x20/0x20 [ 77.853609][ T4307] rfkill_set_block+0x1c6/0x420 [ 77.858489][ T4307] rfkill_fop_write+0x452/0x560 [ 77.863369][ T4307] ? rfkill_fop_read+0x4d0/0x4d0 [ 77.868331][ T4307] ? common_file_perm+0x110/0x1c0 [ 77.873485][ T4307] ? fsnotify_perm+0x5d/0x560 [ 77.878187][ T4307] ? security_file_permission+0x75/0xa0 [ 77.883757][ T4307] ? rfkill_fop_read+0x4d0/0x4d0 [ 77.888721][ T4307] vfs_write+0x30b/0xd60 [ 77.893087][ T4307] ? file_end_write+0x250/0x250 [ 77.898167][ T4307] ? __context_tracking_exit+0x4c/0x80 [ 77.903655][ T4307] ? __lock_acquire+0x7d10/0x7d10 [ 77.908802][ T4307] ? __fdget_pos+0x1e2/0x370 [ 77.913417][ T4307] ksys_write+0x152/0x260 [ 77.917780][ T4307] ? __ia32_sys_read+0x80/0x80 [ 77.922569][ T4307] ? lockdep_hardirqs_on+0x94/0x140 [ 77.927901][ T4307] do_syscall_64+0x4c/0xa0 [ 77.932352][ T4307] ? clear_bhb_loop+0x30/0x80 [ 77.937055][ T4307] ? clear_bhb_loop+0x30/0x80 [ 77.941758][ T4307] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 77.947676][ T4307] RIP: 0033:0x7f0ff48cd819 [ 77.952156][ T4307] 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 [ 77.971983][ T4307] RSP: 002b:00007ffd4b1b7cd8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 77.980626][ T4307] RAX: ffffffffffffffda RBX: 00007f0ff4b46fa0 RCX: 00007f0ff48cd819 [ 77.988727][ T4307] RDX: 0000000000000008 RSI: 0000200000000300 RDI: 0000000000000003 [ 77.996740][ T4307] RBP: 00007f0ff4963c91 R08: 0000000000000000 R09: 0000000000000000 [ 78.004740][ T4307] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 78.012761][ T4307] R13: 00007f0ff4b46fac R14: 00007f0ff4b46fa0 R15: 00007f0ff4b46fa0 [ 78.020856][ T4307] [ 78.040210][ T2239] Bluetooth: hci0: command 0x040f tx timeout