Warning: Permanently added '10.128.0.133' (ED25519) to the list of known hosts. 2026/07/20 08:38:38 parsed 1 programs 2026/07/20 08:38:38 serving rpc on tcp://38465 [ 68.943524][ T4198] cgroup: Unknown subsys name 'net' [ 69.066454][ T4198] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size = 127995904 bytes [ 70.600239][ T4198] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k FS [ 71.383735][ T1422] ieee802154 phy0 wpan0: encryption failed: -22 [ 71.390306][ T1422] ieee802154 phy1 wpan1: encryption failed: -22 [ 72.007416][ T157] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 72.018425][ T157] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 72.029377][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 72.049383][ T144] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 72.057485][ T144] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 72.065334][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 73.950912][ T4248] chnl_net:caif_netlink_parms(): no params data found [ 74.022564][ T4248] bridge0: port 1(bridge_slave_0) entered blocking state [ 74.030511][ T4248] bridge0: port 1(bridge_slave_0) entered disabled state [ 74.038918][ T4248] device bridge_slave_0 entered promiscuous mode [ 74.050555][ T4248] bridge0: port 2(bridge_slave_1) entered blocking state [ 74.057889][ T4248] bridge0: port 2(bridge_slave_1) entered disabled state [ 74.066769][ T4248] device bridge_slave_1 entered promiscuous mode [ 74.091694][ T4248] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 74.104277][ T4248] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 74.133241][ T4248] team0: Port device team_slave_0 added [ 74.142008][ T4248] team0: Port device team_slave_1 added [ 74.165669][ T4248] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 74.172937][ T4248] batman_adv: batadv0: The MTU of interface batadv_slave_0 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. [ 74.202086][ T4248] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 74.215481][ T4248] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 74.222685][ T4248] batman_adv: batadv0: The MTU of interface batadv_slave_1 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. [ 74.248879][ T4248] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 74.289880][ T4248] device hsr_slave_0 entered promiscuous mode [ 74.297061][ T4248] device hsr_slave_1 entered promiscuous mode [ 74.478698][ T4248] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 74.506539][ T4248] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 74.522589][ T4248] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 74.542270][ T4248] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 74.626992][ T4248] 8021q: adding VLAN 0 to HW filter on device bond0 [ 74.644994][ T157] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 74.653892][ T157] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 74.666210][ T4248] 8021q: adding VLAN 0 to HW filter on device team0 [ 74.677253][ T4270] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 74.687038][ T4270] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 74.697086][ T4270] bridge0: port 1(bridge_slave_0) entered blocking state [ 74.704467][ T4270] bridge0: port 1(bridge_slave_0) entered forwarding state [ 74.714727][ T4270] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 74.726702][ T157] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 74.735532][ T157] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 74.744845][ T157] bridge0: port 2(bridge_slave_1) entered blocking state [ 74.752036][ T157] bridge0: port 2(bridge_slave_1) entered forwarding state [ 74.764515][ T4270] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 74.776925][ T4270] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 74.792250][ T157] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 74.801321][ T157] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 74.814249][ T157] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 74.826937][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 74.839286][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 74.871334][ T4248] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 75.009316][ T157] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 75.017243][ T157] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 75.030775][ T4248] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 75.048086][ T157] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 75.094883][ T157] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 75.104780][ T157] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 75.113057][ T157] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 75.125300][ T4248] device veth0_vlan entered promiscuous mode [ 75.153700][ T4248] device veth1_vlan entered promiscuous mode [ 75.177188][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 75.186032][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 75.197336][ T4248] device veth0_macvtap entered promiscuous mode [ 75.231507][ T4248] device veth1_macvtap entered promiscuous mode [ 75.248921][ T4248] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 75.257609][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 75.266099][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 75.274252][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 75.284951][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 75.297275][ T4248] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 75.306582][ T4270] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 75.315812][ T4270] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 75.332357][ T4248] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 75.341658][ T4248] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 75.350901][ T4248] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 75.359649][ T4248] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 2026/07/20 08:38:48 executed programs: 0 [ 77.004403][ T4300] chnl_net:caif_netlink_parms(): no params data found [ 77.065506][ T4300] bridge0: port 1(bridge_slave_0) entered blocking state [ 77.072788][ T4300] bridge0: port 1(bridge_slave_0) entered disabled state [ 77.081202][ T4300] device bridge_slave_0 entered promiscuous mode [ 77.089766][ T4300] bridge0: port 2(bridge_slave_1) entered blocking state [ 77.097336][ T4300] bridge0: port 2(bridge_slave_1) entered disabled state [ 77.105671][ T4300] device bridge_slave_1 entered promiscuous mode [ 77.131366][ T4300] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 77.143041][ T4300] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 77.170719][ T4300] team0: Port device team_slave_0 added [ 77.178685][ T4300] team0: Port device team_slave_1 added [ 77.204608][ T4300] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 77.212690][ T4300] 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. [ 77.238837][ T4300] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 77.253277][ T4300] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 77.261001][ T4300] 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. [ 77.287435][ T4300] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 77.322140][ T4300] device hsr_slave_0 entered promiscuous mode [ 77.329046][ T4300] device hsr_slave_1 entered promiscuous mode [ 77.336110][ T4300] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 77.344125][ T4300] Cannot create hsr debugfs directory [ 77.437250][ T4300] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 78.901125][ T4269] Bluetooth: hci0: command 0x0409 tx timeout [ 80.753880][ T4300] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 80.826399][ T4300] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 80.901119][ T4300] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 80.971900][ T4265] Bluetooth: hci0: command 0x041b tx timeout [ 81.073344][ T4300] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 81.085460][ T4300] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 81.108015][ T4300] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 81.117180][ T4300] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 81.149580][ T9] device hsr_slave_0 left promiscuous mode [ 81.157177][ T9] device hsr_slave_1 left promiscuous mode [ 81.164634][ T9] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 81.172299][ T9] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 81.183281][ T9] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 81.191036][ T9] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 81.198740][ T9] device bridge_slave_1 left promiscuous mode [ 81.206136][ T9] bridge0: port 2(bridge_slave_1) entered disabled state [ 81.219519][ T9] device bridge_slave_0 left promiscuous mode [ 81.226046][ T9] bridge0: port 1(bridge_slave_0) entered disabled state [ 81.244994][ T9] device veth1_macvtap left promiscuous mode [ 81.251406][ T9] device veth0_macvtap left promiscuous mode [ 81.257465][ T9] device veth1_vlan left promiscuous mode [ 81.264336][ T9] device veth0_vlan left promiscuous mode [ 81.437836][ T9] team0 (unregistering): Port device team_slave_1 removed [ 81.450467][ T9] team0 (unregistering): Port device team_slave_0 removed [ 81.466107][ T9] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 81.482025][ T9] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 81.537858][ T9] bond0 (unregistering): Released all slaves [ 81.604330][ T4300] 8021q: adding VLAN 0 to HW filter on device bond0 [ 81.619445][ T4308] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 81.627472][ T4308] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 81.640778][ T4300] 8021q: adding VLAN 0 to HW filter on device team0 [ 81.659608][ T4308] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 81.668637][ T4308] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 81.677616][ T4308] bridge0: port 1(bridge_slave_0) entered blocking state [ 81.684756][ T4308] bridge0: port 1(bridge_slave_0) entered forwarding state [ 81.694776][ T4308] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 81.704821][ T4308] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 81.714603][ T4308] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 81.723260][ T4308] bridge0: port 2(bridge_slave_1) entered blocking state [ 81.730533][ T4308] bridge0: port 2(bridge_slave_1) entered forwarding state [ 81.749530][ T4270] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 81.761562][ T4270] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 81.774575][ T4270] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 81.784743][ T4270] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 81.794634][ T4270] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 81.807832][ T4270] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 81.817861][ T4270] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 81.837331][ T4300] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 81.847986][ T4300] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 81.869024][ T4308] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 81.881236][ T4308] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 81.892667][ T4308] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 81.901443][ T4308] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 81.913233][ T4308] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 81.997562][ T4308] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 82.006044][ T4308] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 82.019368][ T4300] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 82.044496][ T4308] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 82.054860][ T4308] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 82.078095][ T4308] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 82.087611][ T4308] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 82.098332][ T4300] device veth0_vlan entered promiscuous mode [ 82.106260][ T4308] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 82.114977][ T4308] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 82.128075][ T4300] device veth1_vlan entered promiscuous mode [ 82.155915][ T4308] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 82.166582][ T4308] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 82.174872][ T4308] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 82.184349][ T4308] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 82.195324][ T4300] device veth0_macvtap entered promiscuous mode [ 82.207482][ T4300] device veth1_macvtap entered promiscuous mode [ 82.227866][ T4300] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 82.237466][ T4308] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 82.247647][ T4308] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 82.258176][ T4308] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 82.267393][ T4308] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 82.281078][ T4300] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 82.288550][ T4308] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 82.298146][ T4308] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 82.310574][ T4300] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 82.319324][ T4300] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 82.328653][ T4300] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 82.346976][ T4300] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 82.418547][ T144] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 82.436544][ T144] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 82.446695][ T4308] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 82.471610][ T144] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 82.479487][ T144] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 82.487757][ T4308] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 82.618183][ T4314] [ 82.620576][ T4314] ====================================================== [ 82.627620][ T4314] WARNING: possible circular locking dependency detected [ 82.634678][ T4314] syzkaller #0 Not tainted [ 82.639117][ T4314] ------------------------------------------------------ [ 82.646154][ T4314] syz.0.17/4314 is trying to acquire lock: [ 82.652013][ T4314] ffff88801e5b9028 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}, at: __flush_work+0xfa/0x210 [ 82.663123][ T4314] [ 82.663123][ T4314] but task is already holding lock: [ 82.670602][ T4314] ffffffff8d6d3c28 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x1ae/0x560 [ 82.680305][ T4314] [ 82.680305][ T4314] which lock already depends on the new lock. [ 82.680305][ T4314] [ 82.690908][ T4314] [ 82.690908][ T4314] the existing dependency chain (in reverse order) is: [ 82.699947][ T4314] [ 82.699947][ T4314] -> #4 (rfkill_global_mutex){+.+.}-{3:3}: [ 82.707978][ T4314] __mutex_lock_common+0x1e5/0x2400 [ 82.713919][ T4314] mutex_lock_nested+0x17/0x20 [ 82.719272][ T4314] rfkill_register+0x2f/0x970 [ 82.724514][ T4314] hci_register_dev+0x459/0x980 [ 82.729932][ T4314] vhci_create_device+0x32e/0x5c0 [ 82.735523][ T4314] vhci_write+0x389/0x440 [ 82.740412][ T4314] vfs_write+0x748/0xd70 [ 82.745207][ T4314] ksys_write+0x153/0x260 [ 82.750083][ T4314] do_syscall_64+0x4c/0xa0 [ 82.755051][ T4314] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 82.761596][ T4314] [ 82.761596][ T4314] -> #3 (&data->open_mutex){+.+.}-{3:3}: [ 82.769462][ T4314] __mutex_lock_common+0x1e5/0x2400 [ 82.775221][ T4314] mutex_lock_nested+0x17/0x20 [ 82.780541][ T4314] vhci_send_frame+0x88/0x100 [ 82.785948][ T4314] hci_send_frame+0x1a9/0x2e0 [ 82.791207][ T4314] hci_tx_work+0x9b5/0x16d0 [ 82.796348][ T4314] process_one_work+0x867/0xff0 [ 82.801760][ T4314] worker_thread+0xad7/0x12a0 [ 82.807019][ T4314] kthread+0x42e/0x520 [ 82.811722][ T4314] ret_from_fork+0x1f/0x30 [ 82.816729][ T4314] [ 82.816729][ T4314] -> #2 ((work_completion)(&hdev->tx_work)){+.+.}-{0:0}: [ 82.826166][ T4314] __flush_work+0x116/0x210 [ 82.831237][ T4314] hci_dev_do_close+0x201/0x1020 [ 82.836725][ T4314] hci_unregister_dev+0x2eb/0x590 [ 82.842525][ T4314] vhci_release+0x73/0xc0 [ 82.847419][ T4314] __fput+0x212/0x8c0 [ 82.851940][ T4314] task_work_run+0x125/0x1a0 [ 82.857074][ T4314] do_exit+0x635/0x2110 [ 82.861769][ T4314] do_group_exit+0x12c/0x2f0 [ 82.866904][ T4314] get_signal+0x7eb/0x12e0 [ 82.871864][ T4314] arch_do_signal_or_restart+0xe6/0x12a0 [ 82.878053][ T4314] exit_to_user_mode_loop+0x9e/0x130 [ 82.883879][ T4314] exit_to_user_mode_prepare+0xee/0x180 [ 82.889978][ T4314] syscall_exit_to_user_mode+0x16/0x40 [ 82.895993][ T4314] do_syscall_64+0x58/0xa0 [ 82.900969][ T4314] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 82.907408][ T4314] [ 82.907408][ T4314] -> #1 (&hdev->req_lock){+.+.}-{3:3}: [ 82.915091][ T4314] __mutex_lock_common+0x1e5/0x2400 [ 82.920841][ T4314] mutex_lock_nested+0x17/0x20 [ 82.926146][ T4314] bg_scan_update+0x44/0x3b0 [ 82.931276][ T4314] process_one_work+0x867/0xff0 [ 82.936670][ T4314] worker_thread+0xad7/0x12a0 [ 82.941977][ T4314] kthread+0x42e/0x520 [ 82.946589][ T4314] ret_from_fork+0x1f/0x30 [ 82.951555][ T4314] [ 82.951555][ T4314] -> #0 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}: [ 82.961441][ T4314] __lock_acquire+0x2c66/0x7b50 [ 82.966861][ T4314] lock_acquire+0x19e/0x400 [ 82.971909][ T4314] __flush_work+0x116/0x210 [ 82.977053][ T4314] __cancel_work_timer+0x3f4/0x560 [ 82.982716][ T4314] hci_request_cancel_all+0xcc/0x300 [ 82.988543][ T4314] hci_dev_do_close+0x4e/0x1020 [ 82.993935][ T4314] hci_rfkill_set_block+0x101/0x180 [ 82.999678][ T4314] rfkill_set_block+0x1c1/0x3c0 [ 83.005804][ T4314] rfkill_fop_write+0x453/0x560 [ 83.011978][ T4314] do_iter_write+0x3c3/0x7a0 [ 83.017122][ T4314] do_writev+0x281/0x480 [ 83.021917][ T4314] do_syscall_64+0x4c/0xa0 [ 83.026888][ T4314] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 83.033339][ T4314] [ 83.033339][ T4314] other info that might help us debug this: [ 83.033339][ T4314] [ 83.043600][ T4314] Chain exists of: [ 83.043600][ T4314] (work_completion)(&hdev->bg_scan_update) --> &data->open_mutex --> rfkill_global_mutex [ 83.043600][ T4314] [ 83.059363][ T4314] Possible unsafe locking scenario: [ 83.059363][ T4314] [ 83.066841][ T4314] CPU0 CPU1 [ 83.072237][ T4314] ---- ---- [ 83.077624][ T4314] lock(rfkill_global_mutex); [ 83.082423][ T4314] lock(&data->open_mutex); [ 83.089565][ T4314] lock(rfkill_global_mutex); [ 83.096874][ T4314] lock((work_completion)(&hdev->bg_scan_update)); [ 83.103707][ T4314] [ 83.103707][ T4314] *** DEADLOCK *** [ 83.103707][ T4314] [ 83.111980][ T4314] 1 lock held by syz.0.17/4314: [ 83.116854][ T4314] #0: ffffffff8d6d3c28 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x1ae/0x560 [ 83.126995][ T4314] [ 83.126995][ T4314] stack backtrace: [ 83.132925][ T4314] CPU: 1 PID: 4314 Comm: syz.0.17 Not tainted syzkaller #0 [ 83.140154][ T4314] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 [ 83.150254][ T4314] Call Trace: [ 83.153558][ T4314] [ 83.156504][ T4314] dump_stack_lvl+0x188/0x250 [ 83.161215][ T4314] ? load_image+0x410/0x410 [ 83.165755][ T4314] ? show_regs_print_info+0x20/0x20 [ 83.170981][ T4314] ? print_circular_bug+0x12b/0x1a0 [ 83.176207][ T4314] check_noncircular+0x296/0x330 [ 83.181171][ T4314] ? look_up_lock_class+0x71/0x110 [ 83.186317][ T4314] ? add_chain_block+0x9b0/0x9b0 [ 83.191274][ T4314] ? lockdep_lock+0xf1/0x1f0 [ 83.195903][ T4314] ? __lock_acquire+0x1305/0x7b50 [ 83.200954][ T4314] ? mark_lock+0x94/0x320 [ 83.205306][ T4314] ? _find_first_zero_bit+0xd1/0xf0 [ 83.210529][ T4314] __lock_acquire+0x2c66/0x7b50 [ 83.215419][ T4314] ? verify_lock_unused+0x140/0x140 [ 83.220655][ T4314] ? verify_lock_unused+0x140/0x140 [ 83.226071][ T4314] lock_acquire+0x19e/0x400 [ 83.230605][ T4314] ? __flush_work+0xfa/0x210 [ 83.235246][ T4314] ? __lock_acquire+0x7b50/0x7b50 [ 83.240304][ T4314] ? read_lock_is_recursive+0x10/0x10 [ 83.245718][ T4314] ? start_flush_work+0x784/0x830 [ 83.250779][ T4314] __flush_work+0x116/0x210 [ 83.255308][ T4314] ? __flush_work+0xfa/0x210 [ 83.259921][ T4314] ? flush_work+0x20/0x20 [ 83.264279][ T4314] ? try_to_grab_pending+0xfb/0x820 [ 83.269535][ T4314] ? mark_lock+0x94/0x320 [ 83.273897][ T4314] ? lockdep_hardirqs_on_prepare+0x448/0x7c0 [ 83.279914][ T4314] ? lock_chain_count+0x20/0x20 [ 83.284789][ T4314] ? mark_lock+0x94/0x320 [ 83.289144][ T4314] ? __cancel_work_timer+0x36a/0x560 [ 83.294455][ T4314] __cancel_work_timer+0x3f4/0x560 [ 83.299597][ T4314] ? cancel_work_sync+0x20/0x20 [ 83.304478][ T4314] ? __cancel_work+0x1f9/0x2e0 [ 83.309277][ T4314] ? lockdep_hardirqs_on+0x94/0x140 [ 83.314514][ T4314] ? __cancel_work+0x27b/0x2e0 [ 83.319311][ T4314] ? cancel_work+0x20/0x20 [ 83.323837][ T4314] hci_request_cancel_all+0xcc/0x300 [ 83.329235][ T4314] hci_dev_do_close+0x4e/0x1020 [ 83.334355][ T4314] ? _raw_spin_unlock_irqrestore+0xc1/0x120 [ 83.340293][ T4314] ? _raw_spin_unlock+0x40/0x40 [ 83.345181][ T4314] hci_rfkill_set_block+0x101/0x180 [ 83.350419][ T4314] ? rcu_lock_release+0x20/0x20 [ 83.355305][ T4314] rfkill_set_block+0x1c1/0x3c0 [ 83.360204][ T4314] rfkill_fop_write+0x453/0x560 [ 83.365099][ T4314] ? _copy_from_user+0x111/0x170 [ 83.370080][ T4314] ? rfkill_fop_read+0x560/0x560 [ 83.375052][ T4314] ? common_file_perm+0x171/0x1c0 [ 83.380105][ T4314] ? fsnotify_perm+0x5d/0x560 [ 83.384800][ T4314] ? security_file_permission+0x75/0xa0 [ 83.390471][ T4314] do_iter_write+0x3c3/0x7a0 [ 83.395104][ T4314] do_writev+0x281/0x480 [ 83.399388][ T4314] ? do_readv+0x460/0x460 [ 83.403765][ T4314] ? lockdep_hardirqs_on_prepare+0x448/0x7c0 [ 83.409787][ T4314] ? lock_chain_count+0x20/0x20 [ 83.414681][ T4314] ? lockdep_hardirqs_on+0x94/0x140 [ 83.419912][ T4314] do_syscall_64+0x4c/0xa0 [ 83.424353][ T4314] ? clear_bhb_loop+0x30/0x80 [ 83.429075][ T4314] ? clear_bhb_loop+0x30/0x80 [ 83.433793][ T4314] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 83.439731][ T4314] RIP: 0033:0x7fd896a6be99 [ 83.444175][ T4314] 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 [ 83.463982][ T4314] RSP: 002b:00007ffe0ef03a68 EFLAGS: 00000246 ORIG_RAX: 0000000000000014 [ 83.472431][ T4314] RAX: ffffffffffffffda RBX: 00007fd896cf3fa0 RCX: 00007fd896a6be99 [ 83.480438][ T4314] RDX: 0000000000000001 RSI: 0000200000000140 RDI: 0000000000000003 [ 83.488630][ T4314] RBP: 00007fd896b01eaf R08: 0000000000000000 R09: 0000000000000000 [ 83.496635][ T4314] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 83.504634][ T4314] R13: 00007fd896cf3fac R14: 00007fd896cf3fa0 R15: 00007fd896cf3fa0 [ 83.512643][ T4314] [ 83.536116][ T4266] Bluetooth: hci0: command 0x040f tx timeout