Warning: Permanently added '10.128.0.128' (ED25519) to the list of known hosts. 2026/10/04 03:56:25 parsed 1 programs 2026/10/04 03:56:25 serving rpc on tcp://42565 [ 51.755296][ T4197] cgroup: Unknown subsys name 'net' [ 51.930622][ T4197] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size = 127995904 bytes [ 53.116427][ T4197] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k FS [ 55.054565][ T9] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 55.067878][ T9] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 55.085414][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 55.101403][ T1237] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 55.109303][ T1237] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 55.117358][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 55.717244][ T4244] chnl_net:caif_netlink_parms(): no params data found [ 55.773659][ T4244] bridge0: port 1(bridge_slave_0) entered blocking state [ 55.781324][ T4244] bridge0: port 1(bridge_slave_0) entered disabled state [ 55.789456][ T4244] device bridge_slave_0 entered promiscuous mode [ 55.798889][ T4244] bridge0: port 2(bridge_slave_1) entered blocking state [ 55.806206][ T4244] bridge0: port 2(bridge_slave_1) entered disabled state [ 55.814121][ T4244] device bridge_slave_1 entered promiscuous mode [ 55.837299][ T4244] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 55.848506][ T4244] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 55.873922][ T4244] team0: Port device team_slave_0 added [ 55.882449][ T4244] team0: Port device team_slave_1 added [ 55.902392][ T4244] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 55.909376][ T4244] 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. [ 55.935304][ T4244] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 55.947810][ T4244] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 55.954746][ T4244] 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. [ 55.980891][ T4244] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 56.018255][ T4244] device hsr_slave_0 entered promiscuous mode [ 56.025168][ T4244] device hsr_slave_1 entered promiscuous mode [ 56.137464][ T4244] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 56.148498][ T4244] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 56.158455][ T4244] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 56.168340][ T4244] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 56.217042][ T4244] 8021q: adding VLAN 0 to HW filter on device bond0 [ 56.229266][ T1237] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 56.238907][ T1237] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 56.249444][ T4244] 8021q: adding VLAN 0 to HW filter on device team0 [ 56.260742][ T1237] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 56.270195][ T1237] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 56.279260][ T1237] bridge0: port 1(bridge_slave_0) entered blocking state [ 56.286934][ T1237] bridge0: port 1(bridge_slave_0) entered forwarding state [ 56.307215][ T1237] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 56.325621][ T1237] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 56.334198][ T1237] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 56.342781][ T1237] bridge0: port 2(bridge_slave_1) entered blocking state [ 56.349873][ T1237] bridge0: port 2(bridge_slave_1) entered forwarding state [ 56.359032][ T1237] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 56.371188][ T1237] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 56.385302][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 56.394044][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 56.402718][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 56.423703][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 56.437046][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 56.456597][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 56.470772][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 56.479975][ T4244] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 56.550608][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 56.558102][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 56.570225][ T4244] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 56.585039][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 56.602183][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 56.611054][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 56.619717][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 56.629474][ T4244] device veth0_vlan entered promiscuous mode [ 56.639307][ T4244] device veth1_vlan entered promiscuous mode [ 56.654678][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 56.662806][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 56.671446][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 56.682667][ T4244] device veth0_macvtap entered promiscuous mode [ 56.692272][ T4244] device veth1_macvtap entered promiscuous mode [ 56.705293][ T4244] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 56.712736][ T1237] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 56.720852][ T1237] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 56.729375][ T1237] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 56.740411][ T4244] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 56.748902][ T1237] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 56.758774][ T1237] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 56.769251][ T4244] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 56.778540][ T4244] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 56.787446][ T4244] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 56.796302][ T4244] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 2026/10/04 03:56:33 executed programs: 0 [ 57.824536][ T4295] chnl_net:caif_netlink_parms(): no params data found [ 57.881026][ T4295] bridge0: port 1(bridge_slave_0) entered blocking state [ 57.888439][ T4295] bridge0: port 1(bridge_slave_0) entered disabled state [ 57.896720][ T4295] device bridge_slave_0 entered promiscuous mode [ 57.904924][ T4295] bridge0: port 2(bridge_slave_1) entered blocking state [ 57.912571][ T4295] bridge0: port 2(bridge_slave_1) entered disabled state [ 57.920718][ T4295] device bridge_slave_1 entered promiscuous mode [ 57.942930][ T4295] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 57.954146][ T4295] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 57.985082][ T4295] team0: Port device team_slave_0 added [ 57.995035][ T4295] team0: Port device team_slave_1 added [ 58.020801][ T4295] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 58.027870][ T4295] 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. [ 58.058655][ T4295] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 58.071560][ T4295] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 58.080927][ T4295] 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. [ 58.109298][ T4295] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 58.149074][ T4295] device hsr_slave_0 entered promiscuous mode [ 58.158376][ T4295] device hsr_slave_1 entered promiscuous mode [ 58.164977][ T4295] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 58.173187][ T4295] Cannot create hsr debugfs directory [ 58.264032][ T4295] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 59.716288][ T4263] Bluetooth: hci0: command 0x0409 tx timeout [ 60.924847][ T4295] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 61.795543][ T4263] Bluetooth: hci0: command 0x041b tx timeout [ 61.893237][ T4295] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 61.991136][ T4295] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 62.088835][ T4295] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 62.099013][ T4295] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 62.108390][ T4295] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 62.117617][ T4295] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 62.161165][ T4295] 8021q: adding VLAN 0 to HW filter on device bond0 [ 62.171737][ T1237] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 62.180319][ T1237] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 62.199959][ T4295] 8021q: adding VLAN 0 to HW filter on device team0 [ 62.209611][ T1237] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 62.218395][ T1237] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 62.226983][ T1237] bridge0: port 1(bridge_slave_0) entered blocking state [ 62.234022][ T1237] bridge0: port 1(bridge_slave_0) entered forwarding state [ 62.242210][ T1237] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 62.254021][ T1237] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 62.263195][ T1237] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 62.271727][ T1237] bridge0: port 2(bridge_slave_1) entered blocking state [ 62.278798][ T1237] bridge0: port 2(bridge_slave_1) entered forwarding state [ 62.290640][ T1237] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 62.315690][ T1237] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 62.328278][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 62.337168][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 62.345459][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 62.356396][ T1237] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 62.365053][ T1237] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 62.389002][ T1237] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 62.398345][ T1237] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 62.409182][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 62.417469][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 62.429133][ T4295] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 62.518861][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 62.526699][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 62.537382][ T4295] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 62.551742][ T1171] device hsr_slave_0 left promiscuous mode [ 62.558713][ T1171] device hsr_slave_1 left promiscuous mode [ 62.564991][ T1171] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 62.572619][ T1171] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 62.582026][ T1171] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 62.589488][ T1171] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 62.597390][ T1171] device bridge_slave_1 left promiscuous mode [ 62.603993][ T1171] bridge0: port 2(bridge_slave_1) entered disabled state [ 62.617070][ T1171] device bridge_slave_0 left promiscuous mode [ 62.623205][ T1171] bridge0: port 1(bridge_slave_0) entered disabled state [ 62.639136][ T1171] device veth1_macvtap left promiscuous mode [ 62.645271][ T1171] device veth0_macvtap left promiscuous mode [ 62.651780][ T1171] device veth1_vlan left promiscuous mode [ 62.657688][ T1171] device veth0_vlan left promiscuous mode [ 62.781848][ T1171] team0 (unregistering): Port device team_slave_1 removed [ 62.794587][ T1171] team0 (unregistering): Port device team_slave_0 removed [ 62.808533][ T1171] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 62.820626][ T1171] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 62.870570][ T1171] bond0 (unregistering): Released all slaves [ 62.894815][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 62.904892][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 62.920631][ T1237] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 62.929236][ T1237] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 62.940844][ T4295] device veth0_vlan entered promiscuous mode [ 62.948313][ T1237] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 62.956546][ T1237] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 62.969076][ T4295] device veth1_vlan entered promiscuous mode [ 62.995061][ T1237] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 63.003253][ T1237] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 63.011567][ T1237] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 63.020128][ T1237] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 63.029720][ T4295] device veth0_macvtap entered promiscuous mode [ 63.044158][ T4295] device veth1_macvtap entered promiscuous mode [ 63.060388][ T4295] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 63.068148][ T1237] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 63.076261][ T1237] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 63.083967][ T1237] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 63.092778][ T1237] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 63.103133][ T4295] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 63.111756][ T1237] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 63.120824][ T1237] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 63.130882][ T4295] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 63.140127][ T4295] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 63.148947][ T4295] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 63.157755][ T4295] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 63.210411][ T1237] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 63.222793][ T1237] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 63.233379][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 63.252485][ T1237] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 63.260407][ T1237] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 63.270622][ T1237] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 63.367703][ T4313] [ 63.370052][ T4313] ====================================================== [ 63.377056][ T4313] WARNING: possible circular locking dependency detected [ 63.384071][ T4313] syzkaller #0 Not tainted [ 63.388471][ T4313] ------------------------------------------------------ [ 63.395480][ T4313] syz.0.17/4313 is trying to acquire lock: [ 63.401277][ T4313] ffff888078d61028 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}, at: __flush_work+0xfa/0x210 [ 63.412339][ T4313] [ 63.412339][ T4313] but task is already holding lock: [ 63.419691][ T4313] ffffffff8d6d76c8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x1ae/0x560 [ 63.429342][ T4313] [ 63.429342][ T4313] which lock already depends on the new lock. [ 63.429342][ T4313] [ 63.439733][ T4313] [ 63.439733][ T4313] the existing dependency chain (in reverse order) is: [ 63.448739][ T4313] [ 63.448739][ T4313] -> #4 (rfkill_global_mutex){+.+.}-{3:3}: [ 63.456746][ T4313] __mutex_lock_common+0x1e5/0x2400 [ 63.462470][ T4313] mutex_lock_nested+0x17/0x20 [ 63.467748][ T4313] rfkill_register+0x2f/0x970 [ 63.472946][ T4313] hci_register_dev+0x459/0x980 [ 63.478318][ T4313] vhci_create_device+0x32e/0x5c0 [ 63.483865][ T4313] vhci_write+0x389/0x440 [ 63.488714][ T4313] vfs_write+0x748/0xd70 [ 63.493472][ T4313] ksys_write+0x153/0x260 [ 63.498322][ T4313] do_syscall_64+0x4c/0xa0 [ 63.503264][ T4313] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 63.509676][ T4313] [ 63.509676][ T4313] -> #3 (&data->open_mutex){+.+.}-{3:3}: [ 63.517494][ T4313] __mutex_lock_common+0x1e5/0x2400 [ 63.523210][ T4313] mutex_lock_nested+0x17/0x20 [ 63.528493][ T4313] vhci_send_frame+0x88/0x100 [ 63.533690][ T4313] hci_send_frame+0x1a9/0x2e0 [ 63.538887][ T4313] hci_tx_work+0x9b5/0x16d0 [ 63.543909][ T4313] process_one_work+0x867/0xff0 [ 63.549279][ T4313] worker_thread+0xad7/0x12a0 [ 63.554477][ T4313] kthread+0x42e/0x520 [ 63.559063][ T4313] ret_from_fork+0x1f/0x30 [ 63.563998][ T4313] [ 63.563998][ T4313] -> #2 ((work_completion)(&hdev->tx_work)){+.+.}-{0:0}: [ 63.573201][ T4313] __flush_work+0x116/0x210 [ 63.578222][ T4313] hci_dev_do_close+0x201/0x1020 [ 63.583682][ T4313] hci_unregister_dev+0x2eb/0x590 [ 63.589223][ T4313] vhci_release+0x73/0xc0 [ 63.594071][ T4313] __fput+0x212/0x8c0 [ 63.598570][ T4313] task_work_run+0x125/0x1a0 [ 63.603682][ T4313] do_exit+0x635/0x2110 [ 63.608357][ T4313] do_group_exit+0x12c/0x2f0 [ 63.613462][ T4313] get_signal+0x7eb/0x12e0 [ 63.618392][ T4313] arch_do_signal_or_restart+0xe6/0x12a0 [ 63.624539][ T4313] exit_to_user_mode_loop+0x9e/0x130 [ 63.630340][ T4313] exit_to_user_mode_prepare+0xee/0x180 [ 63.636405][ T4313] syscall_exit_to_user_mode+0x16/0x40 [ 63.642378][ T4313] do_syscall_64+0x58/0xa0 [ 63.647312][ T4313] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 63.653721][ T4313] [ 63.653721][ T4313] -> #1 (&hdev->req_lock){+.+.}-{3:3}: [ 63.661371][ T4313] __mutex_lock_common+0x1e5/0x2400 [ 63.667087][ T4313] mutex_lock_nested+0x17/0x20 [ 63.672369][ T4313] bg_scan_update+0x44/0x3b0 [ 63.677479][ T4313] process_one_work+0x867/0xff0 [ 63.682850][ T4313] worker_thread+0xad7/0x12a0 [ 63.688042][ T4313] kthread+0x42e/0x520 [ 63.692624][ T4313] ret_from_fork+0x1f/0x30 [ 63.697557][ T4313] [ 63.697557][ T4313] -> #0 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}: [ 63.707367][ T4313] __lock_acquire+0x38f7/0x7d40 [ 63.712736][ T4313] lock_acquire+0x19f/0x400 [ 63.717849][ T4313] __flush_work+0x116/0x210 [ 63.722851][ T4313] __cancel_work_timer+0x3f4/0x560 [ 63.728461][ T4313] hci_request_cancel_all+0xcc/0x300 [ 63.734250][ T4313] hci_dev_do_close+0x4e/0x1020 [ 63.739601][ T4313] hci_rfkill_set_block+0x101/0x180 [ 63.745296][ T4313] rfkill_set_block+0x1c1/0x3c0 [ 63.750653][ T4313] rfkill_fop_write+0x453/0x560 [ 63.756003][ T4313] vfs_write+0x304/0xd70 [ 63.760748][ T4313] ksys_write+0x153/0x260 [ 63.765576][ T4313] do_syscall_64+0x4c/0xa0 [ 63.770493][ T4313] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 63.776886][ T4313] [ 63.776886][ T4313] other info that might help us debug this: [ 63.776886][ T4313] [ 63.787093][ T4313] Chain exists of: [ 63.787093][ T4313] (work_completion)(&hdev->bg_scan_update) --> &data->open_mutex --> rfkill_global_mutex [ 63.787093][ T4313] [ 63.802794][ T4313] Possible unsafe locking scenario: [ 63.802794][ T4313] [ 63.810220][ T4313] CPU0 CPU1 [ 63.815563][ T4313] ---- ---- [ 63.820902][ T4313] lock(rfkill_global_mutex); [ 63.825643][ T4313] lock(&data->open_mutex); [ 63.832726][ T4313] lock(rfkill_global_mutex); [ 63.839988][ T4313] lock((work_completion)(&hdev->bg_scan_update)); [ 63.846554][ T4313] [ 63.846554][ T4313] *** DEADLOCK *** [ 63.846554][ T4313] [ 63.854676][ T4313] 1 lock held by syz.0.17/4313: [ 63.859500][ T4313] #0: ffffffff8d6d76c8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x1ae/0x560 [ 63.869563][ T4313] [ 63.869563][ T4313] stack backtrace: [ 63.875439][ T4313] CPU: 0 PID: 4313 Comm: syz.0.17 Not tainted syzkaller #0 [ 63.882613][ T4313] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026 [ 63.892653][ T4313] Call Trace: [ 63.895911][ T4313] [ 63.898824][ T4313] dump_stack_lvl+0x188/0x250 [ 63.903480][ T4313] ? load_image+0x410/0x410 [ 63.907960][ T4313] ? show_regs_print_info+0x20/0x20 [ 63.913141][ T4313] ? print_circular_bug+0x12b/0x1a0 [ 63.918318][ T4313] check_noncircular+0x2f8/0x400 [ 63.923233][ T4313] ? look_up_lock_class+0x71/0x110 [ 63.928328][ T4313] ? print_deadlock_bug+0x5d0/0x5d0 [ 63.933503][ T4313] ? lockdep_lock+0xf1/0x1f0 [ 63.938077][ T4313] ? __lock_acquire+0x12df/0x7d40 [ 63.943082][ T4313] ? mark_lock+0x94/0x320 [ 63.947388][ T4313] ? _find_first_zero_bit+0xd1/0xf0 [ 63.952567][ T4313] __lock_acquire+0x38f7/0x7d40 [ 63.957402][ T4313] ? verify_lock_unused+0x140/0x140 [ 63.962583][ T4313] ? verify_lock_unused+0x140/0x140 [ 63.967765][ T4313] lock_acquire+0x19f/0x400 [ 63.972251][ T4313] ? __flush_work+0xfa/0x210 [ 63.976820][ T4313] ? __lock_acquire+0x7d40/0x7d40 [ 63.981826][ T4313] ? read_lock_is_recursive+0x10/0x10 [ 63.987183][ T4313] ? start_flush_work+0x784/0x830 [ 63.992185][ T4313] __flush_work+0x116/0x210 [ 63.996664][ T4313] ? __flush_work+0xfa/0x210 [ 64.001236][ T4313] ? flush_work+0x20/0x20 [ 64.005544][ T4313] ? try_to_grab_pending+0xfb/0x820 [ 64.010721][ T4313] ? mark_lock+0x94/0x320 [ 64.015028][ T4313] ? lockdep_hardirqs_on_prepare+0x448/0x7c0 [ 64.020988][ T4313] ? lock_chain_count+0x20/0x20 [ 64.025832][ T4313] ? mark_lock+0x94/0x320 [ 64.030137][ T4313] ? __cancel_work_timer+0x36a/0x560 [ 64.035398][ T4313] __cancel_work_timer+0x3f4/0x560 [ 64.040486][ T4313] ? cancel_work_sync+0x20/0x20 [ 64.045316][ T4313] ? __cancel_work+0x1f9/0x2e0 [ 64.050065][ T4313] ? lockdep_hardirqs_on+0x94/0x140 [ 64.055241][ T4313] ? __cancel_work+0x27b/0x2e0 [ 64.059982][ T4313] ? cancel_work+0x20/0x20 [ 64.064375][ T4313] hci_request_cancel_all+0xcc/0x300 [ 64.069642][ T4313] hci_dev_do_close+0x4e/0x1020 [ 64.074489][ T4313] ? _raw_spin_unlock_irqrestore+0xc1/0x120 [ 64.080362][ T4313] ? _raw_spin_unlock+0x40/0x40 [ 64.085189][ T4313] hci_rfkill_set_block+0x101/0x180 [ 64.090367][ T4313] ? rcu_lock_release+0x20/0x20 [ 64.095194][ T4313] rfkill_set_block+0x1c1/0x3c0 [ 64.100028][ T4313] rfkill_fop_write+0x453/0x560 [ 64.104855][ T4313] ? rfkill_fop_read+0x560/0x560 [ 64.109767][ T4313] ? common_file_perm+0x150/0x1c0 [ 64.114770][ T4313] ? fsnotify_perm+0x5d/0x560 [ 64.119426][ T4313] ? security_file_permission+0x75/0xa0 [ 64.124949][ T4313] ? rfkill_fop_read+0x560/0x560 [ 64.129864][ T4313] vfs_write+0x304/0xd70 [ 64.134088][ T4313] ? file_end_write+0x250/0x250 [ 64.138917][ T4313] ? __context_tracking_exit+0x4c/0x80 [ 64.144357][ T4313] ? __fdget_pos+0x1e2/0x370 [ 64.148925][ T4313] ksys_write+0x153/0x260 [ 64.153232][ T4313] ? __ia32_sys_read+0x80/0x80 [ 64.157976][ T4313] ? lockdep_hardirqs_on+0x94/0x140 [ 64.163154][ T4313] do_syscall_64+0x4c/0xa0 [ 64.167551][ T4313] ? clear_bhb_loop+0x30/0x80 [ 64.172207][ T4313] ? clear_bhb_loop+0x30/0x80 [ 64.176862][ T4313] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 64.182741][ T4313] RIP: 0033:0x7efc3d9db159 [ 64.187142][ T4313] 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 [ 64.206729][ T4313] RSP: 002b:00007ffc7933a658 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 64.215123][ T4313] RAX: ffffffffffffffda RBX: 00007efc3dc62fa0 RCX: 00007efc3d9db159 [ 64.223073][ T4313] RDX: 0000000000000008 RSI: 0000200000000140 RDI: 0000000000000003 [ 64.231020][ T4313] RBP: 00007efc3da7206b R08: 0000000000000000 R09: 0000000000000000 [ 64.238970][ T4313] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 64.246920][ T4313] R13: 00007efc3dc62fac R14: 00007efc3dc62fa0 R15: 00007efc3dc62fa0 [ 64.254876][ T4313] [ 64.263650][ T4253] Bluetooth: hci0: command 0x040f tx timeout