Warning: Permanently added '10.128.0.34' (ED25519) to the list of known hosts. 2026/08/16 18:49:58 parsed 1 programs 2026/08/16 18:49:58 serving rpc on tcp://42843 [ 56.873413][ T4200] cgroup: Unknown subsys name 'net' [ 56.999698][ T4200] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size = 127995904 bytes [ 58.286703][ T4200] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k FS [ 61.528322][ T4261] chnl_net:caif_netlink_parms(): no params data found [ 61.560830][ T9] ODEBUG: Out of memory. ODEBUG disabled [ 61.584271][ T4261] bridge0: port 1(bridge_slave_0) entered blocking state [ 61.592289][ T4261] bridge0: port 1(bridge_slave_0) entered disabled state [ 61.600441][ T4261] device bridge_slave_0 entered promiscuous mode [ 61.610582][ T4261] bridge0: port 2(bridge_slave_1) entered blocking state [ 61.618543][ T4261] bridge0: port 2(bridge_slave_1) entered disabled state [ 61.626426][ T4261] device bridge_slave_1 entered promiscuous mode [ 61.649372][ T4261] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 61.660630][ T4261] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 61.683192][ T4261] team0: Port device team_slave_0 added [ 61.691805][ T4261] team0: Port device team_slave_1 added [ 61.713798][ T4261] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 61.722284][ T4261] 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. [ 61.749604][ T4261] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 61.765133][ T4261] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 61.772126][ T4261] 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. [ 61.798758][ T4261] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 61.840340][ T4261] device hsr_slave_0 entered promiscuous mode [ 61.848500][ T4261] device hsr_slave_1 entered promiscuous mode [ 61.957269][ T4261] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 61.967350][ T4261] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 61.977216][ T4261] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 61.985966][ T4261] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 62.022522][ T4261] bridge0: port 2(bridge_slave_1) entered blocking state [ 62.029725][ T4261] bridge0: port 2(bridge_slave_1) entered forwarding state [ 62.037469][ T4261] bridge0: port 1(bridge_slave_0) entered blocking state [ 62.044550][ T4261] bridge0: port 1(bridge_slave_0) entered forwarding state [ 62.095118][ T4261] 8021q: adding VLAN 0 to HW filter on device bond0 [ 62.107239][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 62.118037][ T144] bridge0: port 1(bridge_slave_0) entered disabled state [ 62.125973][ T144] bridge0: port 2(bridge_slave_1) entered disabled state [ 62.158364][ T4261] 8021q: adding VLAN 0 to HW filter on device team0 [ 62.168934][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 62.177522][ T144] bridge0: port 1(bridge_slave_0) entered blocking state [ 62.184608][ T144] bridge0: port 1(bridge_slave_0) entered forwarding state [ 62.195924][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 62.204592][ T144] bridge0: port 2(bridge_slave_1) entered blocking state [ 62.211673][ T144] bridge0: port 2(bridge_slave_1) entered forwarding state [ 62.248387][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 62.258137][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 62.271093][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 62.298475][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 62.310024][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 62.320346][ T4261] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 62.409892][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 62.417783][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 62.444216][ T4261] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 62.460064][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 62.468836][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 62.499206][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 62.507652][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 62.516426][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 62.524101][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 62.536278][ T4261] device veth0_vlan entered promiscuous mode [ 62.566984][ T4261] device veth1_vlan entered promiscuous mode [ 62.584117][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 62.593187][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 62.601832][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 62.610600][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 62.621313][ T4261] device veth0_macvtap entered promiscuous mode [ 62.642205][ T4261] device veth1_macvtap entered promiscuous mode [ 62.660074][ T4261] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 62.669394][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 62.680387][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 62.690712][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 62.699996][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 62.713452][ T4261] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 62.725859][ T4261] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 62.736620][ T4261] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 62.746645][ T4261] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 62.756744][ T4261] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 62.767572][ T509] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 62.778347][ T509] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 62.873525][ T4261] syz-executor (4261) used greatest stack depth: 20848 bytes left [ 62.975429][ T509] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 62.983406][ T509] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 63.004472][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 63.030770][ T154] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 63.040182][ T154] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 63.051220][ T509] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2026/08/16 18:50:07 executed programs: 0 [ 63.753796][ T4308] chnl_net:caif_netlink_parms(): no params data found [ 63.802103][ T4308] bridge0: port 1(bridge_slave_0) entered blocking state [ 63.809605][ T4308] bridge0: port 1(bridge_slave_0) entered disabled state [ 63.817524][ T4308] device bridge_slave_0 entered promiscuous mode [ 63.827583][ T4308] bridge0: port 2(bridge_slave_1) entered blocking state [ 63.835912][ T4308] bridge0: port 2(bridge_slave_1) entered disabled state [ 63.843533][ T4308] device bridge_slave_1 entered promiscuous mode [ 63.866181][ T4308] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 63.877345][ T4308] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 63.899128][ T4308] team0: Port device team_slave_0 added [ 63.907515][ T4308] team0: Port device team_slave_1 added [ 63.927469][ T4308] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 63.934535][ T4308] 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. [ 63.960603][ T4308] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 63.972505][ T4308] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 63.979618][ T4308] 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. [ 64.005794][ T4308] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 64.041304][ T4308] device hsr_slave_0 entered promiscuous mode [ 64.048139][ T4308] device hsr_slave_1 entered promiscuous mode [ 64.055132][ T4308] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 64.063029][ T4308] Cannot create hsr debugfs directory [ 64.145391][ T4308] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 65.676009][ T21] Bluetooth: hci0: command 0x0409 tx timeout [ 66.561176][ T4308] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 67.508809][ T4308] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 67.560037][ T4308] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 67.667453][ T4308] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 67.679152][ T4308] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 67.691929][ T4308] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 67.701106][ T4308] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 67.747284][ T4308] 8021q: adding VLAN 0 to HW filter on device bond0 [ 67.762500][ T509] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 67.764898][ T21] Bluetooth: hci0: command 0x041b tx timeout [ 67.772962][ T509] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 67.785669][ T4308] 8021q: adding VLAN 0 to HW filter on device team0 [ 67.802221][ T509] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 67.811641][ T509] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 67.820381][ T509] bridge0: port 1(bridge_slave_0) entered blocking state [ 67.827594][ T509] bridge0: port 1(bridge_slave_0) entered forwarding state [ 67.836724][ T509] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 67.848069][ T509] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 67.856767][ T509] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 67.866061][ T509] bridge0: port 2(bridge_slave_1) entered blocking state [ 67.873121][ T509] bridge0: port 2(bridge_slave_1) entered forwarding state [ 67.891784][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 67.902788][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 67.915913][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 67.926041][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 67.935123][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 67.944260][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 67.952959][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 67.970541][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 67.978949][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 67.990262][ T509] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 67.999670][ T509] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 68.011427][ T4308] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 68.096761][ T509] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 68.104211][ T509] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 68.117829][ T4308] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 68.132062][ T509] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 68.141868][ T509] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 68.169204][ T509] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 68.177789][ T509] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 68.187477][ T509] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 68.195911][ T509] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 68.211440][ T4308] device veth0_vlan entered promiscuous mode [ 68.222236][ T4308] device veth1_vlan entered promiscuous mode [ 68.240076][ T509] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 68.248393][ T509] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 68.256807][ T509] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 68.265570][ T509] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 68.287992][ T9] device hsr_slave_0 left promiscuous mode [ 68.295311][ T9] device hsr_slave_1 left promiscuous mode [ 68.301683][ T9] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 68.309481][ T9] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 68.319896][ T9] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 68.327800][ T9] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 68.335787][ T9] device bridge_slave_1 left promiscuous mode [ 68.342820][ T9] bridge0: port 2(bridge_slave_1) entered disabled state [ 68.355794][ T9] device bridge_slave_0 left promiscuous mode [ 68.363546][ T9] bridge0: port 1(bridge_slave_0) entered disabled state [ 68.380661][ T9] device veth1_macvtap left promiscuous mode [ 68.387012][ T9] device veth0_macvtap left promiscuous mode [ 68.393019][ T9] device veth1_vlan left promiscuous mode [ 68.399193][ T9] device veth0_vlan left promiscuous mode [ 68.508592][ T9] team0 (unregistering): Port device team_slave_1 removed [ 68.520617][ T9] team0 (unregistering): Port device team_slave_0 removed [ 68.533437][ T9] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 68.547610][ T9] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 68.592592][ T9] bond0 (unregistering): Released all slaves [ 68.668725][ T4308] device veth0_macvtap entered promiscuous mode [ 68.680398][ T4308] device veth1_macvtap entered promiscuous mode [ 68.694994][ T4308] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 68.703141][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 68.711827][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 68.720590][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 68.729485][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 68.740125][ T4308] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 68.751041][ T509] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 68.759625][ T509] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 68.769996][ T4308] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 68.778948][ T4308] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 68.788297][ T4308] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 68.798163][ T4308] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 68.855729][ T144] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 68.863572][ T144] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 68.874222][ T509] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 68.908280][ T509] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 68.916938][ T509] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 68.924862][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 69.018269][ T4323] [ 69.020639][ T4323] ====================================================== [ 69.027659][ T4323] WARNING: possible circular locking dependency detected [ 69.034688][ T4323] syzkaller #0 Not tainted [ 69.039110][ T4323] ------------------------------------------------------ [ 69.046127][ T4323] syz.0.17/4323 is trying to acquire lock: [ 69.051929][ T4323] ffff88807903d028 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}, at: __flush_work+0xfa/0x210 [ 69.062999][ T4323] [ 69.062999][ T4323] but task is already holding lock: [ 69.070448][ T4323] ffffffff8d6d5ea8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x1ae/0x560 [ 69.080122][ T4323] [ 69.080122][ T4323] which lock already depends on the new lock. [ 69.080122][ T4323] [ 69.090522][ T4323] [ 69.090522][ T4323] the existing dependency chain (in reverse order) is: [ 69.099535][ T4323] [ 69.099535][ T4323] -> #4 (rfkill_global_mutex){+.+.}-{3:3}: [ 69.107536][ T4323] __mutex_lock_common+0x1e5/0x2400 [ 69.113265][ T4323] mutex_lock_nested+0x17/0x20 [ 69.118577][ T4323] rfkill_register+0x2f/0x970 [ 69.123785][ T4323] hci_register_dev+0x459/0x980 [ 69.129162][ T4323] vhci_create_device+0x32e/0x5c0 [ 69.134714][ T4323] vhci_write+0x389/0x440 [ 69.139756][ T4323] vfs_write+0x748/0xd70 [ 69.144526][ T4323] ksys_write+0x153/0x260 [ 69.149380][ T4323] do_syscall_64+0x4c/0xa0 [ 69.154322][ T4323] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 69.160752][ T4323] [ 69.160752][ T4323] -> #3 (&data->open_mutex){+.+.}-{3:3}: [ 69.168661][ T4323] __mutex_lock_common+0x1e5/0x2400 [ 69.174391][ T4323] mutex_lock_nested+0x17/0x20 [ 69.179683][ T4323] vhci_send_frame+0x88/0x100 [ 69.184890][ T4323] hci_send_frame+0x1a9/0x2e0 [ 69.190096][ T4323] hci_tx_work+0x9b5/0x16d0 [ 69.195147][ T4323] process_one_work+0x867/0xff0 [ 69.200531][ T4323] worker_thread+0xad7/0x12a0 [ 69.205741][ T4323] kthread+0x42e/0x520 [ 69.210348][ T4323] ret_from_fork+0x1f/0x30 [ 69.215293][ T4323] [ 69.215293][ T4323] -> #2 ((work_completion)(&hdev->tx_work)){+.+.}-{0:0}: [ 69.224504][ T4323] __flush_work+0x116/0x210 [ 69.229537][ T4323] hci_dev_do_close+0x201/0x1020 [ 69.235008][ T4323] hci_unregister_dev+0x2eb/0x590 [ 69.240573][ T4323] vhci_release+0x73/0xc0 [ 69.245439][ T4323] __fput+0x212/0x8c0 [ 69.249953][ T4323] task_work_run+0x125/0x1a0 [ 69.255185][ T4323] do_exit+0x635/0x2110 [ 69.259907][ T4323] do_group_exit+0x12c/0x2f0 [ 69.265178][ T4323] get_signal+0x7eb/0x12e0 [ 69.270120][ T4323] arch_do_signal_or_restart+0xe6/0x12a0 [ 69.276419][ T4323] exit_to_user_mode_loop+0x9e/0x130 [ 69.282240][ T4323] exit_to_user_mode_prepare+0xee/0x180 [ 69.288317][ T4323] syscall_exit_to_user_mode+0x16/0x40 [ 69.294309][ T4323] do_syscall_64+0x58/0xa0 [ 69.299264][ T4323] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 69.305689][ T4323] [ 69.305689][ T4323] -> #1 (&hdev->req_lock){+.+.}-{3:3}: [ 69.313429][ T4323] __mutex_lock_common+0x1e5/0x2400 [ 69.319175][ T4323] mutex_lock_nested+0x17/0x20 [ 69.324471][ T4323] bg_scan_update+0x44/0x3b0 [ 69.329591][ T4323] process_one_work+0x867/0xff0 [ 69.334975][ T4323] worker_thread+0xad7/0x12a0 [ 69.340184][ T4323] kthread+0x42e/0x520 [ 69.344784][ T4323] ret_from_fork+0x1f/0x30 [ 69.349728][ T4323] [ 69.349728][ T4323] -> #0 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}: [ 69.359549][ T4323] __lock_acquire+0x2c66/0x7b50 [ 69.364935][ T4323] lock_acquire+0x19e/0x400 [ 69.369980][ T4323] __flush_work+0x116/0x210 [ 69.375012][ T4323] __cancel_work_timer+0x3f4/0x560 [ 69.380685][ T4323] hci_request_cancel_all+0xcc/0x300 [ 69.386878][ T4323] hci_dev_do_close+0x4e/0x1020 [ 69.392440][ T4323] hci_rfkill_set_block+0x101/0x180 [ 69.398178][ T4323] rfkill_set_block+0x1c1/0x3c0 [ 69.403566][ T4323] rfkill_fop_write+0x453/0x560 [ 69.408945][ T4323] vfs_write+0x304/0xd70 [ 69.413713][ T4323] ksys_write+0x153/0x260 [ 69.418569][ T4323] do_syscall_64+0x4c/0xa0 [ 69.423517][ T4323] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 69.429946][ T4323] [ 69.429946][ T4323] other info that might help us debug this: [ 69.429946][ T4323] [ 69.440171][ T4323] Chain exists of: [ 69.440171][ T4323] (work_completion)(&hdev->bg_scan_update) --> &data->open_mutex --> rfkill_global_mutex [ 69.440171][ T4323] [ 69.455899][ T4323] Possible unsafe locking scenario: [ 69.455899][ T4323] [ 69.463351][ T4323] CPU0 CPU1 [ 69.468716][ T4323] ---- ---- [ 69.474077][ T4323] lock(rfkill_global_mutex); [ 69.478851][ T4323] lock(&data->open_mutex); [ 69.485965][ T4323] lock(rfkill_global_mutex); [ 69.493255][ T4323] lock((work_completion)(&hdev->bg_scan_update)); [ 69.499850][ T4323] [ 69.499850][ T4323] *** DEADLOCK *** [ 69.499850][ T4323] [ 69.507996][ T4323] 1 lock held by syz.0.17/4323: [ 69.512853][ T4323] #0: ffffffff8d6d5ea8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x1ae/0x560 [ 69.522969][ T4323] [ 69.522969][ T4323] stack backtrace: [ 69.528859][ T4323] CPU: 1 PID: 4323 Comm: syz.0.17 Not tainted syzkaller #0 [ 69.536153][ T4323] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 [ 69.546322][ T4323] Call Trace: [ 69.549607][ T4323] [ 69.552538][ T4323] dump_stack_lvl+0x188/0x250 [ 69.557231][ T4323] ? load_image+0x410/0x410 [ 69.561741][ T4323] ? show_regs_print_info+0x20/0x20 [ 69.566950][ T4323] ? print_circular_bug+0x12b/0x1a0 [ 69.572159][ T4323] check_noncircular+0x296/0x330 [ 69.577140][ T4323] ? look_up_lock_class+0x71/0x110 [ 69.582270][ T4323] ? add_chain_block+0x9b0/0x9b0 [ 69.587229][ T4323] ? lockdep_lock+0xf1/0x1f0 [ 69.591927][ T4323] ? __lock_acquire+0x1305/0x7b50 [ 69.596964][ T4323] ? mark_lock+0x94/0x320 [ 69.601307][ T4323] ? _find_first_zero_bit+0xd1/0xf0 [ 69.606526][ T4323] __lock_acquire+0x2c66/0x7b50 [ 69.611395][ T4323] ? verify_lock_unused+0x140/0x140 [ 69.616603][ T4323] ? verify_lock_unused+0x140/0x140 [ 69.621825][ T4323] lock_acquire+0x19e/0x400 [ 69.626342][ T4323] ? __flush_work+0xfa/0x210 [ 69.630946][ T4323] ? __lock_acquire+0x7b50/0x7b50 [ 69.635989][ T4323] ? read_lock_is_recursive+0x10/0x10 [ 69.641375][ T4323] ? start_flush_work+0x784/0x830 [ 69.646410][ T4323] ? __lock_acquire+0x13dc/0x7b50 [ 69.651452][ T4323] __flush_work+0x116/0x210 [ 69.655963][ T4323] ? __flush_work+0xfa/0x210 [ 69.660606][ T4323] ? flush_work+0x20/0x20 [ 69.664970][ T4323] ? try_to_grab_pending+0xfb/0x820 [ 69.670185][ T4323] ? mark_lock+0x94/0x320 [ 69.674522][ T4323] ? lockdep_hardirqs_on_prepare+0x448/0x7c0 [ 69.680515][ T4323] ? lock_chain_count+0x20/0x20 [ 69.685377][ T4323] ? mark_lock+0x94/0x320 [ 69.689718][ T4323] ? __cancel_work_timer+0x36a/0x560 [ 69.695024][ T4323] __cancel_work_timer+0x3f4/0x560 [ 69.700146][ T4323] ? cancel_work_sync+0x20/0x20 [ 69.705012][ T4323] ? __cancel_work+0x1f9/0x2e0 [ 69.709875][ T4323] ? lockdep_hardirqs_on+0x94/0x140 [ 69.715118][ T4323] ? __cancel_work+0x27b/0x2e0 [ 69.719900][ T4323] ? cancel_work+0x20/0x20 [ 69.724333][ T4323] hci_request_cancel_all+0xcc/0x300 [ 69.729636][ T4323] hci_dev_do_close+0x4e/0x1020 [ 69.734502][ T4323] ? _raw_spin_unlock_irqrestore+0xc1/0x120 [ 69.740403][ T4323] ? _raw_spin_unlock+0x40/0x40 [ 69.745267][ T4323] hci_rfkill_set_block+0x101/0x180 [ 69.750475][ T4323] ? rcu_lock_release+0x20/0x20 [ 69.755333][ T4323] rfkill_set_block+0x1c1/0x3c0 [ 69.760196][ T4323] rfkill_fop_write+0x453/0x560 [ 69.765057][ T4323] ? rfkill_fop_read+0x560/0x560 [ 69.770008][ T4323] ? common_file_perm+0x100/0x1c0 [ 69.775044][ T4323] ? fsnotify_perm+0x5d/0x560 [ 69.779771][ T4323] ? security_file_permission+0x75/0xa0 [ 69.785373][ T4323] ? rfkill_fop_read+0x560/0x560 [ 69.790321][ T4323] vfs_write+0x304/0xd70 [ 69.794577][ T4323] ? file_end_write+0x250/0x250 [ 69.799441][ T4323] ? __context_tracking_exit+0x4c/0x80 [ 69.804914][ T4323] ? __fdget_pos+0x1e2/0x370 [ 69.809518][ T4323] ksys_write+0x153/0x260 [ 69.813856][ T4323] ? __ia32_sys_read+0x80/0x80 [ 69.818631][ T4323] ? lockdep_hardirqs_on+0x94/0x140 [ 69.823842][ T4323] do_syscall_64+0x4c/0xa0 [ 69.828268][ T4323] ? clear_bhb_loop+0x30/0x80 [ 69.832950][ T4323] ? clear_bhb_loop+0x30/0x80 [ 69.837636][ T4323] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 69.843554][ T4323] RIP: 0033:0x7f901dd3a0d9 [ 69.847978][ T4323] 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 [ 69.867592][ T4323] RSP: 002b:00007fffe97f0738 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 69.876013][ T4323] RAX: ffffffffffffffda RBX: 00007f901dfc1fa0 RCX: 00007f901dd3a0d9 [ 69.884042][ T4323] RDX: 0000000000000008 RSI: 0000200000000080 RDI: 0000000000000003 [ 69.892053][ T4323] RBP: 00007f901ddd1024 R08: 0000000000000000 R09: 0000000000000000 [ 69.900033][ T4323] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 69.908012][ T4323] R13: 00007f901dfc1fac R14: 00007f901dfc1fa0 R15: 00007f901dfc1fa0 [ 69.917585][ T4323] [ 69.927090][ T23] Bluetooth: hci0: command 0x040f tx timeout