Warning: Permanently added '10.128.1.90' (ED25519) to the list of known hosts. 2026/04/08 12:42:28 parsed 1 programs [ 45.459235][ T4189] cgroup: Unknown subsys name 'net' [ 45.595916][ T4189] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size = 127995904 bytes [ 46.737482][ T4189] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k FS [ 48.988887][ T9] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 49.004267][ T9] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 49.022808][ T394] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 49.038892][ T9] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 49.047682][ T9] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 49.055888][ T394] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 49.566843][ T1401] ODEBUG: Out of memory. ODEBUG disabled [ 49.570303][ T4256] chnl_net:caif_netlink_parms(): no params data found [ 49.626850][ T4256] bridge0: port 1(bridge_slave_0) entered blocking state [ 49.637448][ T4256] bridge0: port 1(bridge_slave_0) entered disabled state [ 49.646351][ T4256] device bridge_slave_0 entered promiscuous mode [ 49.667491][ T4256] bridge0: port 2(bridge_slave_1) entered blocking state [ 49.674786][ T4256] bridge0: port 2(bridge_slave_1) entered disabled state [ 49.682961][ T4256] device bridge_slave_1 entered promiscuous mode [ 49.709272][ T4256] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 49.720169][ T4256] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 49.744779][ T4256] team0: Port device team_slave_0 added [ 49.753095][ T4256] team0: Port device team_slave_1 added [ 49.774892][ T4256] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 49.781941][ T4256] batman_adv: batadv0: The MTU of interface batadv_slave_0 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. [ 49.808148][ T4256] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 49.824176][ T4256] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 49.831153][ T4256] batman_adv: batadv0: The MTU of interface batadv_slave_1 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. [ 49.857586][ T4256] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 49.894415][ T4256] device hsr_slave_0 entered promiscuous mode [ 49.906663][ T4256] device hsr_slave_1 entered promiscuous mode [ 49.974134][ T4256] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 49.983955][ T4256] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 49.993120][ T4256] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 50.001742][ T4256] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 50.018535][ T4256] bridge0: port 2(bridge_slave_1) entered blocking state [ 50.025737][ T4256] bridge0: port 2(bridge_slave_1) entered forwarding state [ 50.033325][ T4256] bridge0: port 1(bridge_slave_0) entered blocking state [ 50.040370][ T4256] bridge0: port 1(bridge_slave_0) entered forwarding state [ 50.070495][ T4256] 8021q: adding VLAN 0 to HW filter on device bond0 [ 50.083404][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 50.093519][ T154] bridge0: port 1(bridge_slave_0) entered disabled state [ 50.101290][ T154] bridge0: port 2(bridge_slave_1) entered disabled state [ 50.108934][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 50.120013][ T4256] 8021q: adding VLAN 0 to HW filter on device team0 [ 50.130280][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 50.139717][ T154] bridge0: port 1(bridge_slave_0) entered blocking state [ 50.147512][ T154] bridge0: port 1(bridge_slave_0) entered forwarding state [ 50.158460][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 50.167296][ T144] bridge0: port 2(bridge_slave_1) entered blocking state [ 50.174581][ T144] bridge0: port 2(bridge_slave_1) entered forwarding state [ 50.191181][ T394] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 50.200198][ T394] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 50.210124][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 50.223871][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 50.234839][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 50.245051][ T4256] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 50.304852][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 50.312917][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 50.338998][ T4256] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 50.353705][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 50.368746][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 50.377765][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 50.388203][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 50.398506][ T4256] device veth0_vlan entered promiscuous mode [ 50.426442][ T4256] device veth1_vlan entered promiscuous mode [ 50.442320][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 50.450228][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 50.458870][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 50.468928][ T4256] device veth0_macvtap entered promiscuous mode [ 50.479652][ T4256] device veth1_macvtap entered promiscuous mode [ 50.508896][ T4256] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 50.516945][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 50.526931][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 50.537750][ T4256] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 50.546502][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 50.558100][ T4256] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 50.567597][ T4256] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 50.576486][ T4256] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 50.585761][ T4256] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 2026/04/08 12:42:35 executed programs: 0 [ 51.107966][ T4294] chnl_net:caif_netlink_parms(): no params data found [ 51.142755][ T4294] bridge0: port 1(bridge_slave_0) entered blocking state [ 51.149862][ T4294] bridge0: port 1(bridge_slave_0) entered disabled state [ 51.157495][ T4294] device bridge_slave_0 entered promiscuous mode [ 51.166186][ T4294] bridge0: port 2(bridge_slave_1) entered blocking state [ 51.174344][ T4294] bridge0: port 2(bridge_slave_1) entered disabled state [ 51.182313][ T4294] device bridge_slave_1 entered promiscuous mode [ 51.204159][ T4294] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 51.218130][ T4294] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 51.243171][ T4294] team0: Port device team_slave_0 added [ 51.253769][ T4294] team0: Port device team_slave_1 added [ 51.274333][ T4294] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 51.281534][ T4294] 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. [ 51.309338][ T4294] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 51.321779][ T4294] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 51.328727][ T4294] 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. [ 51.355072][ T4294] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 51.386491][ T4294] device hsr_slave_0 entered promiscuous mode [ 51.393251][ T4294] device hsr_slave_1 entered promiscuous mode [ 51.400081][ T4294] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 51.408097][ T4294] Cannot create hsr debugfs directory [ 51.473169][ T4294] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 53.092301][ T4201] Bluetooth: hci0: command 0x0409 tx timeout [ 53.915772][ T4294] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 55.171697][ T4201] Bluetooth: hci0: command 0x041b tx timeout [ 56.154818][ T4294] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 56.234756][ T4294] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 56.364149][ T4294] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 56.372868][ T4294] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 56.382291][ T4294] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 56.396588][ T4294] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 56.430861][ T4294] 8021q: adding VLAN 0 to HW filter on device bond0 [ 56.446718][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 56.455094][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 56.465175][ T4294] 8021q: adding VLAN 0 to HW filter on device team0 [ 56.474716][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 56.483984][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 56.492745][ T154] bridge0: port 1(bridge_slave_0) entered blocking state [ 56.499814][ T154] bridge0: port 1(bridge_slave_0) entered forwarding state [ 56.508871][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 56.523786][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 56.532551][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 56.541054][ T154] bridge0: port 2(bridge_slave_1) entered blocking state [ 56.548125][ T154] bridge0: port 2(bridge_slave_1) entered forwarding state [ 56.558355][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 56.569372][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 56.582461][ T1401] device hsr_slave_0 left promiscuous mode [ 56.588809][ T1401] device hsr_slave_1 left promiscuous mode [ 56.595639][ T1401] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 56.603219][ T1401] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 56.611765][ T1401] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 56.619263][ T1401] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 56.627204][ T1401] device bridge_slave_1 left promiscuous mode [ 56.634199][ T1401] bridge0: port 2(bridge_slave_1) entered disabled state [ 56.646317][ T1401] device bridge_slave_0 left promiscuous mode [ 56.653462][ T1401] bridge0: port 1(bridge_slave_0) entered disabled state [ 56.667864][ T1401] device veth1_macvtap left promiscuous mode [ 56.674428][ T1401] device veth0_macvtap left promiscuous mode [ 56.681055][ T1401] device veth1_vlan left promiscuous mode [ 56.687076][ T1401] device veth0_vlan left promiscuous mode [ 56.777254][ T1401] team0 (unregistering): Port device team_slave_1 removed [ 56.787626][ T1401] team0 (unregistering): Port device team_slave_0 removed [ 56.799168][ T1401] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 56.812397][ T1401] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 56.848805][ T1401] bond0 (unregistering): Released all slaves [ 56.916025][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 56.925680][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 56.935207][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 56.945058][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 56.953743][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 56.974821][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 56.983896][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 56.992432][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 57.000994][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 57.010427][ T4294] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 57.079994][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 57.087544][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 57.099645][ T4294] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 57.118323][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 57.127314][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 57.142717][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 57.150927][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 57.159499][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 57.167872][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 57.177715][ T4294] device veth0_vlan entered promiscuous mode [ 57.187972][ T4294] device veth1_vlan entered promiscuous mode [ 57.202413][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 57.210428][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 57.218768][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 57.227612][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 57.237896][ T4294] device veth0_macvtap entered promiscuous mode [ 57.252031][ T4262] Bluetooth: hci0: command 0x040f tx timeout [ 57.259551][ T4294] device veth1_macvtap entered promiscuous mode [ 57.276297][ T4294] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 57.284101][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 57.293309][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 57.301476][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 57.310000][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 57.322245][ T4294] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 57.332557][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 57.341336][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 57.350470][ T4294] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 57.361134][ T4294] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 57.369840][ T4294] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 57.379529][ T4294] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 57.434649][ T9] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 57.450631][ T9] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 57.465562][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 57.476727][ T9] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 57.485587][ T9] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 57.493808][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 57.574652][ T4312] [ 57.577013][ T4312] ====================================================== [ 57.584102][ T4312] WARNING: possible circular locking dependency detected [ 57.591132][ T4312] syzkaller #0 Not tainted [ 57.595532][ T4312] ------------------------------------------------------ [ 57.602535][ T4312] syz.0.17/4312 is trying to acquire lock: [ 57.608321][ T4312] ffff888029734c28 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}, at: __flush_work+0xfa/0x210 [ 57.619372][ T4312] [ 57.619372][ T4312] but task is already holding lock: [ 57.627028][ T4312] ffffffff8d6c51a8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x18b/0x560 [ 57.636766][ T4312] [ 57.636766][ T4312] which lock already depends on the new lock. [ 57.636766][ T4312] [ 57.647166][ T4312] [ 57.647166][ T4312] the existing dependency chain (in reverse order) is: [ 57.656169][ T4312] [ 57.656169][ T4312] -> #4 (rfkill_global_mutex){+.+.}-{3:3}: [ 57.664383][ T4312] __mutex_lock_common+0x1e3/0x2400 [ 57.670124][ T4312] mutex_lock_nested+0x17/0x20 [ 57.675498][ T4312] rfkill_register+0x33/0x8a0 [ 57.680704][ T4312] hci_register_dev+0x452/0x970 [ 57.686062][ T4312] vhci_create_device+0x32c/0x5c0 [ 57.691683][ T4312] vhci_write+0x391/0x450 [ 57.696522][ T4312] vfs_write+0x745/0xd60 [ 57.701359][ T4312] ksys_write+0x152/0x260 [ 57.706364][ T4312] do_syscall_64+0x4c/0xa0 [ 57.711346][ T4312] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 57.717754][ T4312] [ 57.717754][ T4312] -> #3 (&data->open_mutex){+.+.}-{3:3}: [ 57.725562][ T4312] __mutex_lock_common+0x1e3/0x2400 [ 57.731452][ T4312] mutex_lock_nested+0x17/0x20 [ 57.736765][ T4312] vhci_send_frame+0x88/0x100 [ 57.741947][ T4312] hci_send_frame+0x1a9/0x2e0 [ 57.747123][ T4312] hci_tx_work+0x9f9/0x1710 [ 57.752121][ T4312] process_one_work+0x85f/0x1010 [ 57.757554][ T4312] worker_thread+0xaa6/0x1290 [ 57.762721][ T4312] kthread+0x436/0x520 [ 57.767282][ T4312] ret_from_fork+0x1f/0x30 [ 57.772190][ T4312] [ 57.772190][ T4312] -> #2 ((work_completion)(&hdev->tx_work)){+.+.}-{0:0}: [ 57.781371][ T4312] __flush_work+0x116/0x210 [ 57.786370][ T4312] hci_dev_do_close+0x1e7/0x1030 [ 57.791830][ T4312] hci_unregister_dev+0x2d7/0x580 [ 57.797347][ T4312] vhci_release+0x73/0xc0 [ 57.802169][ T4312] __fput+0x234/0x930 [ 57.806647][ T4312] task_work_run+0x125/0x1a0 [ 57.811728][ T4312] do_exit+0x626/0x20c0 [ 57.816404][ T4312] do_group_exit+0x12e/0x300 [ 57.821481][ T4312] get_signal+0x6ca/0x12c0 [ 57.826391][ T4312] arch_do_signal_or_restart+0xe7/0x12c0 [ 57.832526][ T4312] exit_to_user_mode_loop+0x9e/0x130 [ 57.838485][ T4312] exit_to_user_mode_prepare+0xee/0x180 [ 57.844530][ T4312] syscall_exit_to_user_mode+0x16/0x40 [ 57.850605][ T4312] do_syscall_64+0x58/0xa0 [ 57.855537][ T4312] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 57.861944][ T4312] [ 57.861944][ T4312] -> #1 (&hdev->req_lock){+.+.}-{3:3}: [ 57.869571][ T4312] __mutex_lock_common+0x1e3/0x2400 [ 57.875650][ T4312] mutex_lock_nested+0x17/0x20 [ 57.880921][ T4312] bg_scan_update+0x44/0x3b0 [ 57.886015][ T4312] process_one_work+0x85f/0x1010 [ 57.891556][ T4312] worker_thread+0xaa6/0x1290 [ 57.896780][ T4312] kthread+0x436/0x520 [ 57.901446][ T4312] ret_from_fork+0x1f/0x30 [ 57.906453][ T4312] [ 57.906453][ T4312] -> #0 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}: [ 57.916409][ T4312] __lock_acquire+0x2c42/0x7d10 [ 57.921755][ T4312] lock_acquire+0x19e/0x400 [ 57.926772][ T4312] __flush_work+0x116/0x210 [ 57.931867][ T4312] __cancel_work_timer+0x3f4/0x560 [ 57.937674][ T4312] hci_request_cancel_all+0xcc/0x300 [ 57.943555][ T4312] hci_dev_do_close+0x4e/0x1030 [ 57.948922][ T4312] hci_rfkill_set_block+0x10a/0x190 [ 57.954706][ T4312] rfkill_set_block+0x1c6/0x420 [ 57.960225][ T4312] rfkill_fop_write+0x452/0x560 [ 57.965665][ T4312] vfs_write+0x30b/0xd60 [ 57.970405][ T4312] ksys_write+0x152/0x260 [ 57.975227][ T4312] do_syscall_64+0x4c/0xa0 [ 57.980141][ T4312] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 57.986541][ T4312] [ 57.986541][ T4312] other info that might help us debug this: [ 57.986541][ T4312] [ 57.996848][ T4312] Chain exists of: [ 57.996848][ T4312] (work_completion)(&hdev->bg_scan_update) --> &data->open_mutex --> rfkill_global_mutex [ 57.996848][ T4312] [ 58.012847][ T4312] Possible unsafe locking scenario: [ 58.012847][ T4312] [ 58.020367][ T4312] CPU0 CPU1 [ 58.025709][ T4312] ---- ---- [ 58.031046][ T4312] lock(rfkill_global_mutex); [ 58.036104][ T4312] lock(&data->open_mutex); [ 58.043184][ T4312] lock(rfkill_global_mutex); [ 58.050434][ T4312] lock((work_completion)(&hdev->bg_scan_update)); [ 58.056986][ T4312] [ 58.056986][ T4312] *** DEADLOCK *** [ 58.056986][ T4312] [ 58.065095][ T4312] 1 lock held by syz.0.17/4312: [ 58.070003][ T4312] #0: ffffffff8d6c51a8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x18b/0x560 [ 58.080062][ T4312] [ 58.080062][ T4312] stack backtrace: [ 58.085943][ T4312] CPU: 1 PID: 4312 Comm: syz.0.17 Not tainted syzkaller #0 [ 58.093110][ T4312] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 58.103149][ T4312] Call Trace: [ 58.106400][ T4312] [ 58.109308][ T4312] dump_stack_lvl+0x188/0x250 [ 58.113958][ T4312] ? load_image+0x400/0x400 [ 58.118431][ T4312] ? show_regs_print_info+0x20/0x20 [ 58.123712][ T4312] ? print_circular_bug+0x12b/0x1a0 [ 58.129064][ T4312] check_noncircular+0x296/0x330 [ 58.133980][ T4312] ? look_up_lock_class+0x71/0x110 [ 58.139078][ T4312] ? add_chain_block+0x940/0x940 [ 58.143996][ T4312] ? lockdep_lock+0xf1/0x1f0 [ 58.148560][ T4312] ? __lock_acquire+0x12e8/0x7d10 [ 58.153645][ T4312] ? mark_lock+0x94/0x320 [ 58.157966][ T4312] __lock_acquire+0x2c42/0x7d10 [ 58.162812][ T4312] ? rcu_lock_release+0x5/0x20 [ 58.167558][ T4312] ? verify_lock_unused+0x140/0x140 [ 58.172739][ T4312] ? mark_lock+0x94/0x320 [ 58.177049][ T4312] lock_acquire+0x19e/0x400 [ 58.181528][ T4312] ? __flush_work+0xfa/0x210 [ 58.186187][ T4312] ? __lock_acquire+0x7d10/0x7d10 [ 58.191280][ T4312] ? read_lock_is_recursive+0x10/0x10 [ 58.196740][ T4312] ? start_flush_work+0x776/0x820 [ 58.201752][ T4312] __flush_work+0x116/0x210 [ 58.206260][ T4312] ? __flush_work+0xfa/0x210 [ 58.210827][ T4312] ? flush_work+0x20/0x20 [ 58.215133][ T4312] ? try_to_grab_pending+0xfa/0x7f0 [ 58.220329][ T4312] ? mark_lock+0x94/0x320 [ 58.224634][ T4312] ? lockdep_hardirqs_on_prepare+0x409/0x770 [ 58.230762][ T4312] ? lock_chain_count+0x20/0x20 [ 58.235680][ T4312] ? mark_lock+0x94/0x320 [ 58.239997][ T4312] ? __cancel_work_timer+0x36a/0x560 [ 58.245266][ T4312] __cancel_work_timer+0x3f4/0x560 [ 58.250359][ T4312] ? cancel_work_sync+0x20/0x20 [ 58.255233][ T4312] ? __cancel_work+0x1f9/0x2e0 [ 58.259981][ T4312] ? lockdep_hardirqs_on+0x94/0x140 [ 58.265164][ T4312] ? __cancel_work+0x27b/0x2e0 [ 58.269907][ T4312] ? cancel_work+0x20/0x20 [ 58.274297][ T4312] ? lock_chain_count+0x20/0x20 [ 58.279121][ T4312] hci_request_cancel_all+0xcc/0x300 [ 58.284386][ T4312] hci_dev_do_close+0x4e/0x1030 [ 58.289357][ T4312] ? _raw_spin_unlock_irqrestore+0xc1/0x120 [ 58.295247][ T4312] ? _raw_spin_unlock+0x40/0x40 [ 58.300088][ T4312] hci_rfkill_set_block+0x10a/0x190 [ 58.305274][ T4312] ? rcu_lock_release+0x20/0x20 [ 58.310116][ T4312] rfkill_set_block+0x1c6/0x420 [ 58.314946][ T4312] rfkill_fop_write+0x452/0x560 [ 58.319770][ T4312] ? rfkill_fop_read+0x4d0/0x4d0 [ 58.324680][ T4312] ? common_file_perm+0x110/0x1c0 [ 58.329766][ T4312] ? fsnotify_perm+0x5d/0x560 [ 58.334420][ T4312] ? security_file_permission+0x75/0xa0 [ 58.339948][ T4312] ? rfkill_fop_read+0x4d0/0x4d0 [ 58.344863][ T4312] vfs_write+0x30b/0xd60 [ 58.349168][ T4312] ? file_end_write+0x250/0x250 [ 58.353993][ T4312] ? __context_tracking_exit+0x4c/0x80 [ 58.359427][ T4312] ? __lock_acquire+0x7d10/0x7d10 [ 58.364424][ T4312] ? __fdget_pos+0x1e2/0x370 [ 58.368988][ T4312] ksys_write+0x152/0x260 [ 58.373287][ T4312] ? __ia32_sys_read+0x80/0x80 [ 58.378024][ T4312] ? lockdep_hardirqs_on+0x94/0x140 [ 58.383223][ T4312] do_syscall_64+0x4c/0xa0 [ 58.387635][ T4312] ? clear_bhb_loop+0x30/0x80 [ 58.392495][ T4312] ? clear_bhb_loop+0x30/0x80 [ 58.397250][ T4312] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 58.403134][ T4312] RIP: 0033:0x7ff4e963f819 [ 58.407654][ T4312] 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 [ 58.427275][ T4312] RSP: 002b:00007ffd92769838 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 58.435772][ T4312] RAX: ffffffffffffffda RBX: 00007ff4e98b8fa0 RCX: 00007ff4e963f819 [ 58.443724][ T4312] RDX: 0000000000000008 RSI: 0000200000000080 RDI: 0000000000000003 [ 58.451673][ T4312] RBP: 00007ff4e96d5c91 R08: 0000000000000000 R09: 0000000000000000 [ 58.459971][ T4312] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 58.467916][ T4312] R13: 00007ff4e98b8fac R14: 00007ff4e98b8fa0 R15: 00007ff4e98b8fa0 [ 58.475952][ T4312]