Warning: Permanently added '10.128.1.181' (ED25519) to the list of known hosts. 2026/04/29 07:52:08 parsed 1 programs [ 67.303374][ T4187] cgroup: Unknown subsys name 'net' [ 67.454263][ T4187] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size = 127995904 bytes [ 68.961066][ T4187] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k FS [ 71.581810][ T1432] ieee802154 phy0 wpan0: encryption failed: -22 [ 71.588539][ T1432] ieee802154 phy1 wpan1: encryption failed: -22 [ 72.607594][ T4245] chnl_net:caif_netlink_parms(): no params data found [ 72.701009][ T4245] bridge0: port 1(bridge_slave_0) entered blocking state [ 72.713624][ T4245] bridge0: port 1(bridge_slave_0) entered disabled state [ 72.722263][ T4245] device bridge_slave_0 entered promiscuous mode [ 72.748523][ T4245] bridge0: port 2(bridge_slave_1) entered blocking state [ 72.755693][ T4245] bridge0: port 2(bridge_slave_1) entered disabled state [ 72.764630][ T4245] device bridge_slave_1 entered promiscuous mode [ 72.796719][ T4245] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 72.808971][ T4245] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 72.843675][ T4245] team0: Port device team_slave_0 added [ 72.851651][ T4245] team0: Port device team_slave_1 added [ 72.867421][ T4245] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 72.874669][ T4245] batman_adv: batadv0: The MTU of interface batadv_slave_0 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. [ 72.900736][ T4245] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 72.914765][ T4245] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 72.921826][ T4245] batman_adv: batadv0: The MTU of interface batadv_slave_1 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. [ 72.948037][ T4245] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 72.975539][ T4245] device hsr_slave_0 entered promiscuous mode [ 72.982370][ T4245] device hsr_slave_1 entered promiscuous mode [ 73.064765][ T4245] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 73.076751][ T4245] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 73.086219][ T4245] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 73.095164][ T4245] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 73.120437][ T4245] bridge0: port 2(bridge_slave_1) entered blocking state [ 73.127734][ T4245] bridge0: port 2(bridge_slave_1) entered forwarding state [ 73.136214][ T4245] bridge0: port 1(bridge_slave_0) entered blocking state [ 73.143556][ T4245] bridge0: port 1(bridge_slave_0) entered forwarding state [ 73.185721][ T4245] 8021q: adding VLAN 0 to HW filter on device bond0 [ 73.200958][ T382] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 73.211653][ T382] bridge0: port 1(bridge_slave_0) entered disabled state [ 73.220450][ T382] bridge0: port 2(bridge_slave_1) entered disabled state [ 73.251940][ T4245] 8021q: adding VLAN 0 to HW filter on device team0 [ 73.263179][ T382] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 73.272765][ T382] bridge0: port 1(bridge_slave_0) entered blocking state [ 73.279993][ T382] bridge0: port 1(bridge_slave_0) entered forwarding state [ 73.312419][ T382] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 73.321195][ T382] bridge0: port 2(bridge_slave_1) entered blocking state [ 73.328520][ T382] bridge0: port 2(bridge_slave_1) entered forwarding state [ 73.348430][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 73.357235][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 73.387003][ T4269] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 73.402341][ T4269] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 73.414098][ T4269] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 73.443205][ T4245] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 73.539469][ T4269] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 73.547160][ T4269] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 73.580248][ T4245] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 73.598089][ T4269] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 73.607017][ T4269] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 73.627421][ T4245] device veth0_vlan entered promiscuous mode [ 73.635829][ T4269] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 73.644874][ T4269] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 73.653783][ T4269] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 73.662821][ T4269] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 73.695178][ T4245] device veth1_vlan entered promiscuous mode [ 73.713766][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 73.722569][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 73.731189][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 73.740643][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 73.753251][ T4245] device veth0_macvtap entered promiscuous mode [ 73.765093][ T4245] device veth1_macvtap entered promiscuous mode [ 73.792629][ T4245] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 73.800216][ T4269] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 73.808938][ T4269] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 73.816984][ T4269] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 73.826134][ T4269] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 73.852649][ T4245] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 73.861206][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 73.870175][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 73.880497][ T4245] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 73.889706][ T4245] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 73.899030][ T4245] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 73.908243][ T4245] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 74.020096][ T4245] syz-executor (4245) used greatest stack depth: 20696 bytes left [ 74.130115][ T9] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 74.138101][ T9] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 74.161485][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 74.194189][ T154] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 74.204416][ T154] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 74.213798][ T4278] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2026/04/29 07:52:17 executed programs: 0 [ 75.179940][ T4293] chnl_net:caif_netlink_parms(): no params data found [ 75.244261][ T4293] bridge0: port 1(bridge_slave_0) entered blocking state [ 75.252538][ T4293] bridge0: port 1(bridge_slave_0) entered disabled state [ 75.260841][ T4293] device bridge_slave_0 entered promiscuous mode [ 75.270903][ T4293] bridge0: port 2(bridge_slave_1) entered blocking state [ 75.278050][ T4293] bridge0: port 2(bridge_slave_1) entered disabled state [ 75.286613][ T4293] device bridge_slave_1 entered promiscuous mode [ 75.312058][ T4293] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 75.323781][ T4293] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 75.350920][ T4293] team0: Port device team_slave_0 added [ 75.360909][ T4293] team0: Port device team_slave_1 added [ 75.384035][ T4293] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 75.391463][ T4293] 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. [ 75.418430][ T4293] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 75.432433][ T4293] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 75.439919][ T4293] 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. [ 75.468624][ T4293] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 75.504558][ T4293] device hsr_slave_0 entered promiscuous mode [ 75.511766][ T4293] device hsr_slave_1 entered promiscuous mode [ 75.520135][ T4293] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 75.527975][ T4293] Cannot create hsr debugfs directory [ 75.631267][ T4293] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 77.099194][ T4254] Bluetooth: hci0: command 0x0409 tx timeout [ 78.614427][ T4293] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 78.703910][ T4293] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 78.776978][ T4293] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 78.919029][ T4293] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 78.927686][ T4293] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 78.937708][ T4293] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 78.958604][ T4293] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 79.014941][ T4293] 8021q: adding VLAN 0 to HW filter on device bond0 [ 79.026910][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 79.035382][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 79.055677][ T4293] 8021q: adding VLAN 0 to HW filter on device team0 [ 79.064994][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 79.074117][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 79.082984][ T154] bridge0: port 1(bridge_slave_0) entered blocking state [ 79.090106][ T154] bridge0: port 1(bridge_slave_0) entered forwarding state [ 79.098713][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 79.112591][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 79.122099][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 79.130767][ T154] bridge0: port 2(bridge_slave_1) entered blocking state [ 79.137897][ T154] bridge0: port 2(bridge_slave_1) entered forwarding state [ 79.161782][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 79.173992][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 79.183005][ T4301] Bluetooth: hci0: command 0x041b tx timeout [ 79.191496][ T382] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 79.202309][ T382] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 79.210952][ T382] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 79.222394][ T4278] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 79.231590][ T4278] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 79.255297][ T4278] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 79.264721][ T4278] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 79.276582][ T4278] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 79.286275][ T4278] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 79.307743][ T4293] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 79.415955][ T382] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 79.424717][ T382] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 79.437754][ T4293] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 79.456203][ T4278] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 79.465434][ T4278] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 79.493814][ T382] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 79.504937][ T382] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 79.514576][ T382] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 79.524326][ T382] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 79.542069][ T4293] device veth0_vlan entered promiscuous mode [ 79.553025][ T4293] device veth1_vlan entered promiscuous mode [ 79.575552][ T4278] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 79.585678][ T4278] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 79.593932][ T4278] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 79.603347][ T4278] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 79.616681][ T144] device hsr_slave_0 left promiscuous mode [ 79.624992][ T144] device hsr_slave_1 left promiscuous mode [ 79.632191][ T144] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 79.639820][ T144] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 79.648772][ T144] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 79.656187][ T144] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 79.665120][ T144] device bridge_slave_1 left promiscuous mode [ 79.672632][ T144] bridge0: port 2(bridge_slave_1) entered disabled state [ 79.684826][ T144] device bridge_slave_0 left promiscuous mode [ 79.692193][ T144] bridge0: port 1(bridge_slave_0) entered disabled state [ 79.710001][ T144] device veth1_macvtap left promiscuous mode [ 79.716639][ T144] device veth0_macvtap left promiscuous mode [ 79.723248][ T144] device veth1_vlan left promiscuous mode [ 79.729861][ T144] device veth0_vlan left promiscuous mode [ 79.875589][ T144] team0 (unregistering): Port device team_slave_1 removed [ 79.890508][ T144] team0 (unregistering): Port device team_slave_0 removed [ 79.907638][ T144] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 79.921819][ T144] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 79.977508][ T144] bond0 (unregistering): Released all slaves [ 80.056796][ T4293] device veth0_macvtap entered promiscuous mode [ 80.064852][ T4278] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 80.076475][ T4293] device veth1_macvtap entered promiscuous mode [ 80.097011][ T4293] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 80.106767][ T382] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 80.117149][ T382] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 80.133447][ T4293] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 80.141096][ T382] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 80.151144][ T382] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 80.163550][ T4293] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 80.172560][ T4293] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 80.181754][ T4293] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 80.190961][ T4293] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 80.255671][ T382] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 80.266668][ T382] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 80.275298][ T4278] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 80.305132][ T4278] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 80.313304][ T4278] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 80.321903][ T4278] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 80.437998][ T4311] [ 80.440471][ T4311] ====================================================== [ 80.447605][ T4311] WARNING: possible circular locking dependency detected [ 80.454953][ T4311] syzkaller #0 Not tainted [ 80.459517][ T4311] ------------------------------------------------------ [ 80.466558][ T4311] syz.0.17/4311 is trying to acquire lock: [ 80.472380][ T4311] ffff888024608c28 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}, at: __flush_work+0xfa/0x210 [ 80.483460][ T4311] [ 80.483460][ T4311] but task is already holding lock: [ 80.491013][ T4311] ffffffff8d6c5de8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x18b/0x560 [ 80.501132][ T4311] [ 80.501132][ T4311] which lock already depends on the new lock. [ 80.501132][ T4311] [ 80.511753][ T4311] [ 80.511753][ T4311] the existing dependency chain (in reverse order) is: [ 80.520787][ T4311] [ 80.520787][ T4311] -> #4 (rfkill_global_mutex){+.+.}-{3:3}: [ 80.528809][ T4311] __mutex_lock_common+0x1e3/0x2400 [ 80.534558][ T4311] mutex_lock_nested+0x17/0x20 [ 80.539870][ T4311] rfkill_register+0x33/0x980 [ 80.545101][ T4311] hci_register_dev+0x452/0x970 [ 80.550492][ T4311] vhci_create_device+0x32c/0x5c0 [ 80.556064][ T4311] vhci_write+0x391/0x450 [ 80.561106][ T4311] vfs_write+0x745/0xd60 [ 80.565883][ T4311] ksys_write+0x152/0x260 [ 80.570746][ T4311] do_syscall_64+0x4c/0xa0 [ 80.575711][ T4311] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 80.582141][ T4311] [ 80.582141][ T4311] -> #3 (&data->open_mutex){+.+.}-{3:3}: [ 80.590303][ T4311] __mutex_lock_common+0x1e3/0x2400 [ 80.596053][ T4311] mutex_lock_nested+0x17/0x20 [ 80.601481][ T4311] vhci_send_frame+0x88/0x100 [ 80.606711][ T4311] hci_send_frame+0x1a9/0x2e0 [ 80.611941][ T4311] hci_tx_work+0x9f9/0x1710 [ 80.617014][ T4311] process_one_work+0x85f/0x1010 [ 80.622694][ T4311] worker_thread+0xaa6/0x1290 [ 80.627916][ T4311] kthread+0x436/0x520 [ 80.632533][ T4311] ret_from_fork+0x1f/0x30 [ 80.637677][ T4311] [ 80.637677][ T4311] -> #2 ((work_completion)(&hdev->tx_work)){+.+.}-{0:0}: [ 80.646916][ T4311] __flush_work+0x116/0x210 [ 80.651973][ T4311] hci_dev_do_close+0x1e7/0x1030 [ 80.658459][ T4311] hci_unregister_dev+0x2d7/0x580 [ 80.664036][ T4311] vhci_release+0x73/0xc0 [ 80.669006][ T4311] __fput+0x234/0x930 [ 80.673528][ T4311] task_work_run+0x125/0x1a0 [ 80.678659][ T4311] do_exit+0x626/0x20c0 [ 80.683355][ T4311] do_group_exit+0x12e/0x300 [ 80.688762][ T4311] get_signal+0x6ca/0x12c0 [ 80.693712][ T4311] arch_do_signal_or_restart+0xe7/0x12c0 [ 80.699967][ T4311] exit_to_user_mode_loop+0x9e/0x130 [ 80.705870][ T4311] exit_to_user_mode_prepare+0xee/0x180 [ 80.711953][ T4311] syscall_exit_to_user_mode+0x16/0x40 [ 80.718045][ T4311] do_syscall_64+0x58/0xa0 [ 80.723004][ T4311] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 80.729449][ T4311] [ 80.729449][ T4311] -> #1 (&hdev->req_lock){+.+.}-{3:3}: [ 80.737220][ T4311] __mutex_lock_common+0x1e3/0x2400 [ 80.742985][ T4311] mutex_lock_nested+0x17/0x20 [ 80.748395][ T4311] bg_scan_update+0x44/0x3b0 [ 80.753548][ T4311] process_one_work+0x85f/0x1010 [ 80.759141][ T4311] worker_thread+0xaa6/0x1290 [ 80.764627][ T4311] kthread+0x436/0x520 [ 80.769249][ T4311] ret_from_fork+0x1f/0x30 [ 80.774395][ T4311] [ 80.774395][ T4311] -> #0 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}: [ 80.784454][ T4311] __lock_acquire+0x2c42/0x7d10 [ 80.790092][ T4311] lock_acquire+0x19e/0x400 [ 80.795159][ T4311] __flush_work+0x116/0x210 [ 80.800305][ T4311] __cancel_work_timer+0x3f4/0x560 [ 80.805969][ T4311] hci_request_cancel_all+0xcc/0x300 [ 80.811811][ T4311] hci_dev_do_close+0x4e/0x1030 [ 80.817514][ T4311] hci_rfkill_set_block+0x10a/0x190 [ 80.823563][ T4311] rfkill_set_block+0x1c9/0x3d0 [ 80.829273][ T4311] rfkill_fop_write+0x452/0x560 [ 80.834677][ T4311] vfs_write+0x30b/0xd60 [ 80.839474][ T4311] ksys_write+0x152/0x260 [ 80.844347][ T4311] do_syscall_64+0x4c/0xa0 [ 80.849311][ T4311] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 80.855757][ T4311] [ 80.855757][ T4311] other info that might help us debug this: [ 80.855757][ T4311] [ 80.866195][ T4311] Chain exists of: [ 80.866195][ T4311] (work_completion)(&hdev->bg_scan_update) --> &data->open_mutex --> rfkill_global_mutex [ 80.866195][ T4311] [ 80.882060][ T4311] Possible unsafe locking scenario: [ 80.882060][ T4311] [ 80.889788][ T4311] CPU0 CPU1 [ 80.895275][ T4311] ---- ---- [ 80.900669][ T4311] lock(rfkill_global_mutex); [ 80.905579][ T4311] lock(&data->open_mutex); [ 80.912814][ T4311] lock(rfkill_global_mutex); [ 80.920236][ T4311] lock((work_completion)(&hdev->bg_scan_update)); [ 80.927070][ T4311] [ 80.927070][ T4311] *** DEADLOCK *** [ 80.927070][ T4311] [ 80.935240][ T4311] 1 lock held by syz.0.17/4311: [ 80.940320][ T4311] #0: ffffffff8d6c5de8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x18b/0x560 [ 80.950719][ T4311] [ 80.950719][ T4311] stack backtrace: [ 80.956717][ T4311] CPU: 0 PID: 4311 Comm: syz.0.17 Not tainted syzkaller #0 [ 80.964115][ T4311] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 80.974393][ T4311] Call Trace: [ 80.977800][ T4311] [ 80.980870][ T4311] dump_stack_lvl+0x188/0x250 [ 80.985672][ T4311] ? load_image+0x400/0x400 [ 80.990294][ T4311] ? show_regs_print_info+0x20/0x20 [ 80.995523][ T4311] ? print_circular_bug+0x12b/0x1a0 [ 81.000775][ T4311] check_noncircular+0x296/0x330 [ 81.005829][ T4311] ? look_up_lock_class+0x71/0x110 [ 81.011120][ T4311] ? add_chain_block+0x940/0x940 [ 81.016289][ T4311] ? lockdep_lock+0xf1/0x1f0 [ 81.021025][ T4311] ? __lock_acquire+0x12e8/0x7d10 [ 81.026084][ T4311] ? mark_lock+0x94/0x320 [ 81.030441][ T4311] ? _find_first_zero_bit+0xce/0xf0 [ 81.035674][ T4311] __lock_acquire+0x2c42/0x7d10 [ 81.040561][ T4311] ? verify_lock_unused+0x140/0x140 [ 81.045800][ T4311] ? verify_lock_unused+0x140/0x140 [ 81.051032][ T4311] ? mark_lock+0x94/0x320 [ 81.055393][ T4311] lock_acquire+0x19e/0x400 [ 81.060138][ T4311] ? __flush_work+0xfa/0x210 [ 81.064927][ T4311] ? __lock_acquire+0x7d10/0x7d10 [ 81.070125][ T4311] ? read_lock_is_recursive+0x10/0x10 [ 81.075712][ T4311] ? start_flush_work+0x776/0x820 [ 81.080964][ T4311] __flush_work+0x116/0x210 [ 81.085510][ T4311] ? __flush_work+0xfa/0x210 [ 81.090134][ T4311] ? flush_work+0x20/0x20 [ 81.094576][ T4311] ? try_to_grab_pending+0xfa/0x7f0 [ 81.099857][ T4311] ? mark_lock+0x94/0x320 [ 81.104222][ T4311] ? lockdep_hardirqs_on_prepare+0x409/0x770 [ 81.110330][ T4311] ? lock_chain_count+0x20/0x20 [ 81.115224][ T4311] ? mark_lock+0x94/0x320 [ 81.119596][ T4311] ? __cancel_work_timer+0x36a/0x560 [ 81.125085][ T4311] __cancel_work_timer+0x3f4/0x560 [ 81.130332][ T4311] ? cancel_work_sync+0x20/0x20 [ 81.135220][ T4311] ? __cancel_work+0x1f9/0x2e0 [ 81.140023][ T4311] ? lockdep_hardirqs_on+0x94/0x140 [ 81.145260][ T4311] ? __cancel_work+0x27b/0x2e0 [ 81.150230][ T4311] ? cancel_work+0x20/0x20 [ 81.154678][ T4311] ? lock_chain_count+0x20/0x20 [ 81.159559][ T4311] hci_request_cancel_all+0xcc/0x300 [ 81.164880][ T4311] hci_dev_do_close+0x4e/0x1030 [ 81.169767][ T4311] ? _raw_spin_unlock_irqrestore+0xc1/0x120 [ 81.175688][ T4311] ? _raw_spin_unlock+0x40/0x40 [ 81.180575][ T4311] hci_rfkill_set_block+0x10a/0x190 [ 81.185813][ T4311] ? rcu_lock_release+0x20/0x20 [ 81.190816][ T4311] rfkill_set_block+0x1c9/0x3d0 [ 81.195702][ T4311] rfkill_fop_write+0x452/0x560 [ 81.200583][ T4311] ? rfkill_fop_read+0x520/0x520 [ 81.205561][ T4311] ? common_file_perm+0x140/0x1c0 [ 81.211009][ T4311] ? fsnotify_perm+0x5d/0x560 [ 81.215900][ T4311] ? security_file_permission+0x75/0xa0 [ 81.221575][ T4311] ? rfkill_fop_read+0x520/0x520 [ 81.226645][ T4311] vfs_write+0x30b/0xd60 [ 81.231128][ T4311] ? file_end_write+0x250/0x250 [ 81.236116][ T4311] ? __fget_files+0x40f/0x480 [ 81.240822][ T4311] ? __fdget_pos+0x1e2/0x370 [ 81.245462][ T4311] ? ksys_write+0x71/0x260 [ 81.249997][ T4311] ksys_write+0x152/0x260 [ 81.254355][ T4311] ? __ia32_sys_read+0x80/0x80 [ 81.259154][ T4311] ? lockdep_hardirqs_on+0x94/0x140 [ 81.260327][ T4302] Bluetooth: hci0: command 0x040f tx timeout [ 81.264384][ T4311] do_syscall_64+0x4c/0xa0 [ 81.274783][ T4311] ? clear_bhb_loop+0x30/0x80 [ 81.279676][ T4311] ? clear_bhb_loop+0x30/0x80 [ 81.284390][ T4311] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 81.290313][ T4311] RIP: 0033:0x7f33b9e98dd9 [ 81.294767][ T4311] 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 [ 81.314853][ T4311] RSP: 002b:00007f33b94fa028 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 81.323889][ T4311] RAX: ffffffffffffffda RBX: 00007f33ba111fa0 RCX: 00007f33b9e98dd9 [ 81.331938][ T4311] RDX: 0000000000000008 RSI: 0000200000000080 RDI: 0000000000000003 [ 81.340000][ T4311] RBP: 00007f33b9f2ed69 R08: 0000000000000000 R09: 0000000000000000 [ 81.348085][ T4311] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 81.356253][ T4311] R13: 00007f33ba112038 R14: 00007f33ba111fa0 R15: 00007fff038ba338 [ 81.364517][ T4311]