Warning: Permanently added '10.128.0.252' (ED25519) to the list of known hosts. 2025/10/12 23:16:51 parsed 1 programs [ 69.788165][ T4190] cgroup: Unknown subsys name 'net' [ 69.918763][ T4190] cgroup: Unknown subsys name 'rlimit' [ 71.368432][ T4190] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k FS [ 71.474626][ T1428] ieee802154 phy0 wpan0: encryption failed: -22 [ 71.481152][ T1428] ieee802154 phy1 wpan1: encryption failed: -22 [ 74.115762][ T154] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 74.142294][ T154] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 74.143670][ T9] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 74.151496][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 74.160642][ T9] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 74.178554][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 74.733915][ T4248] chnl_net:caif_netlink_parms(): no params data found [ 74.800847][ T4248] bridge0: port 1(bridge_slave_0) entered blocking state [ 74.808918][ T4248] bridge0: port 1(bridge_slave_0) entered disabled state [ 74.817448][ T4248] device bridge_slave_0 entered promiscuous mode [ 74.826961][ T4248] bridge0: port 2(bridge_slave_1) entered blocking state [ 74.834352][ T4248] bridge0: port 2(bridge_slave_1) entered disabled state [ 74.842436][ T4248] device bridge_slave_1 entered promiscuous mode [ 74.865454][ T4248] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 74.876843][ T4248] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 74.906417][ T4248] team0: Port device team_slave_0 added [ 74.913068][ T1183] ODEBUG: Out of memory. ODEBUG disabled [ 74.916146][ T4248] team0: Port device team_slave_1 added [ 74.943740][ T4248] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 74.950785][ 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. [ 74.977076][ T4248] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 74.989806][ T4248] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 74.997076][ 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. [ 75.023159][ T4248] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 75.150706][ T4248] device hsr_slave_0 entered promiscuous mode [ 75.159848][ T4248] device hsr_slave_1 entered promiscuous mode [ 75.267772][ T4248] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 75.278632][ T4248] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 75.288479][ T4248] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 75.297460][ T4248] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 75.350757][ T4248] 8021q: adding VLAN 0 to HW filter on device bond0 [ 75.363918][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 75.372909][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 75.385023][ T4248] 8021q: adding VLAN 0 to HW filter on device team0 [ 75.396779][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 75.406787][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 75.417022][ T144] bridge0: port 1(bridge_slave_0) entered blocking state [ 75.424451][ T144] bridge0: port 1(bridge_slave_0) entered forwarding state [ 75.435867][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 75.448172][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 75.457408][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 75.468066][ T144] bridge0: port 2(bridge_slave_1) entered blocking state [ 75.475190][ T144] bridge0: port 2(bridge_slave_1) entered forwarding state [ 75.487517][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 75.499922][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 75.513016][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 75.524356][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 75.533954][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 75.545964][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 75.555992][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 75.587715][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 75.597167][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 75.609762][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 75.624060][ T4248] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 75.741923][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 75.749981][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 75.779447][ T4248] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 75.796787][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 75.819190][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 75.828039][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 75.836342][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 75.847224][ T4248] device veth0_vlan entered promiscuous mode [ 75.873491][ T4248] device veth1_vlan entered promiscuous mode [ 75.891843][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 75.900871][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 75.909506][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 75.923103][ T4248] device veth0_macvtap entered promiscuous mode [ 75.931837][ T4248] device veth1_macvtap entered promiscuous mode [ 75.967904][ T4248] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 75.976233][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 75.984824][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 75.993873][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 76.006702][ T4248] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 76.015581][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 76.024544][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 76.034633][ T4248] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 76.043974][ T4248] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 76.053774][ T4248] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 76.062925][ T4248] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 2025/10/12 23:17:01 executed programs: 0 [ 77.587934][ T4301] chnl_net:caif_netlink_parms(): no params data found [ 77.646662][ T4301] bridge0: port 1(bridge_slave_0) entered blocking state [ 77.653906][ T4301] bridge0: port 1(bridge_slave_0) entered disabled state [ 77.661866][ T4301] device bridge_slave_0 entered promiscuous mode [ 77.670946][ T4301] bridge0: port 2(bridge_slave_1) entered blocking state [ 77.678560][ T4301] bridge0: port 2(bridge_slave_1) entered disabled state [ 77.686499][ T4301] device bridge_slave_1 entered promiscuous mode [ 77.709070][ T4301] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 77.724614][ T4301] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 77.752096][ T4301] team0: Port device team_slave_0 added [ 77.761190][ T4301] team0: Port device team_slave_1 added [ 77.791300][ T4301] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 77.798739][ T4301] 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. [ 77.827625][ T4301] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 77.841361][ T4301] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 77.848746][ T4301] 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. [ 77.875276][ T4301] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 77.912918][ T4301] device hsr_slave_0 entered promiscuous mode [ 77.922861][ T4301] device hsr_slave_1 entered promiscuous mode [ 77.929644][ T4301] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 77.940222][ T4301] Cannot create hsr debugfs directory [ 78.020754][ T4301] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 79.473163][ T13] Bluetooth: hci0: command 0x0409 tx timeout [ 81.005376][ T4301] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 81.046476][ T4301] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 81.088765][ T4301] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 81.195392][ T4301] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 81.204667][ T4301] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 81.214354][ T4301] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 81.223371][ T4301] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 81.284306][ T4301] 8021q: adding VLAN 0 to HW filter on device bond0 [ 81.310309][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 81.318921][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 81.329473][ T4301] 8021q: adding VLAN 0 to HW filter on device team0 [ 81.340875][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 81.349940][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 81.359216][ T9] bridge0: port 1(bridge_slave_0) entered blocking state [ 81.366386][ T9] bridge0: port 1(bridge_slave_0) entered forwarding state [ 81.377076][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 81.385672][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 81.396998][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 81.406054][ T9] bridge0: port 2(bridge_slave_1) entered blocking state [ 81.413223][ T9] bridge0: port 2(bridge_slave_1) entered forwarding state [ 81.438815][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 81.451926][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 81.464514][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 81.475493][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 81.487267][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 81.512337][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 81.521520][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 81.533666][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 81.542917][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 81.557459][ T4301] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 81.568567][ T4289] Bluetooth: hci0: command 0x041b tx timeout [ 81.573407][ T4301] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 81.586720][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 81.595724][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 81.657870][ T1183] device hsr_slave_0 left promiscuous mode [ 81.665292][ T1183] device hsr_slave_1 left promiscuous mode [ 81.671951][ T1183] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 81.679547][ T1183] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 81.687794][ T1183] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 81.695409][ T1183] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 81.703782][ T1183] device bridge_slave_1 left promiscuous mode [ 81.710652][ T1183] bridge0: port 2(bridge_slave_1) entered disabled state [ 81.729644][ T1183] device bridge_slave_0 left promiscuous mode [ 81.737309][ T1183] bridge0: port 1(bridge_slave_0) entered disabled state [ 81.763291][ T1183] device veth1_macvtap left promiscuous mode [ 81.769744][ T1183] device veth0_macvtap left promiscuous mode [ 81.778918][ T1183] device veth1_vlan left promiscuous mode [ 81.785120][ T1183] device veth0_vlan left promiscuous mode [ 82.006550][ T1183] team0 (unregistering): Port device team_slave_1 removed [ 82.020197][ T1183] team0 (unregistering): Port device team_slave_0 removed [ 82.039451][ T1183] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 82.058868][ T1183] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 82.137611][ T1183] bond0 (unregistering): Released all slaves [ 82.226994][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 82.235132][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 82.251826][ T4301] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 82.278452][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 82.287241][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 82.304928][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 82.314384][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 82.323991][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 82.332614][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 82.348081][ T4301] device veth0_vlan entered promiscuous mode [ 82.373971][ T4301] device veth1_vlan entered promiscuous mode [ 82.393429][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 82.401876][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 82.414011][ T4301] device veth0_macvtap entered promiscuous mode [ 82.425484][ T4301] device veth1_macvtap entered promiscuous mode [ 82.447728][ T4301] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 82.455445][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 82.463796][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 82.471663][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 82.480616][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 82.492857][ T4301] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 82.500443][ T3092] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 82.509801][ T3092] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 82.521077][ T4301] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 82.530943][ T4301] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 82.539852][ T4301] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 82.549634][ T4301] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 82.621082][ T3092] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 82.643318][ T3092] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 82.649744][ T9] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 82.651920][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 82.665459][ T9] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 82.676847][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 82.804089][ T4319] [ 82.806478][ T4319] ====================================================== [ 82.813510][ T4319] WARNING: possible circular locking dependency detected [ 82.820551][ T4319] syzkaller #0 Not tainted [ 82.824988][ T4319] ------------------------------------------------------ [ 82.832133][ T4319] syz.0.17/4319 is trying to acquire lock: [ 82.837956][ T4319] ffff8880232f0c28 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}, at: __flush_work+0xc1/0x1b0 [ 82.849055][ T4319] [ 82.849055][ T4319] but task is already holding lock: [ 82.856434][ T4319] ffffffff8d4c0768 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x19e/0x560 [ 82.866256][ T4319] [ 82.866256][ T4319] which lock already depends on the new lock. [ 82.866256][ T4319] [ 82.876715][ T4319] [ 82.876715][ T4319] the existing dependency chain (in reverse order) is: [ 82.885750][ T4319] [ 82.885750][ T4319] -> #4 (rfkill_global_mutex){+.+.}-{3:3}: [ 82.893774][ T4319] __mutex_lock_common+0x1eb/0x2390 [ 82.899531][ T4319] mutex_lock_nested+0x17/0x20 [ 82.905285][ T4319] rfkill_register+0x33/0x8a0 [ 82.910519][ T4319] hci_register_dev+0x452/0x970 [ 82.915949][ T4319] vhci_create_device+0x32c/0x5c0 [ 82.921534][ T4319] vhci_write+0x391/0x450 [ 82.926411][ T4319] vfs_write+0x712/0xd00 [ 82.931199][ T4319] ksys_write+0x14d/0x250 [ 82.936178][ T4319] do_syscall_64+0x4c/0xa0 [ 82.941144][ T4319] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 82.947588][ T4319] [ 82.947588][ T4319] -> #3 (&data->open_mutex){+.+.}-{3:3}: [ 82.955434][ T4319] __mutex_lock_common+0x1eb/0x2390 [ 82.961180][ T4319] mutex_lock_nested+0x17/0x20 [ 82.966521][ T4319] vhci_send_frame+0x88/0x100 [ 82.971737][ T4319] hci_send_frame+0x1a9/0x2e0 [ 82.976969][ T4319] hci_tx_work+0x9f9/0x1710 [ 82.982091][ T4319] process_one_work+0x863/0x1000 [ 82.987564][ T4319] worker_thread+0xaa8/0x12a0 [ 82.992784][ T4319] kthread+0x436/0x520 [ 82.997400][ T4319] ret_from_fork+0x1f/0x30 [ 83.002357][ T4319] [ 83.002357][ T4319] -> #2 ((work_completion)(&hdev->tx_work)){+.+.}-{0:0}: [ 83.011581][ T4319] __flush_work+0xdd/0x1b0 [ 83.016538][ T4319] hci_dev_do_close+0x1e7/0x1030 [ 83.022012][ T4319] hci_unregister_dev+0x2d7/0x580 [ 83.027571][ T4319] vhci_release+0x73/0xc0 [ 83.032426][ T4319] __fput+0x234/0x930 [ 83.036938][ T4319] task_work_run+0x125/0x1a0 [ 83.042057][ T4319] do_exit+0x61e/0x20a0 [ 83.046744][ T4319] do_group_exit+0x12e/0x300 [ 83.051865][ T4319] get_signal+0x6ca/0x12c0 [ 83.056814][ T4319] arch_do_signal_or_restart+0xc1/0x1300 [ 83.063091][ T4319] exit_to_user_mode_loop+0x9e/0x130 [ 83.068949][ T4319] exit_to_user_mode_prepare+0xee/0x180 [ 83.075046][ T4319] syscall_exit_to_user_mode+0x16/0x40 [ 83.081403][ T4319] do_syscall_64+0x58/0xa0 [ 83.086549][ T4319] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 83.093090][ T4319] [ 83.093090][ T4319] -> #1 (&hdev->req_lock){+.+.}-{3:3}: [ 83.100772][ T4319] __mutex_lock_common+0x1eb/0x2390 [ 83.106513][ T4319] mutex_lock_nested+0x17/0x20 [ 83.111877][ T4319] bg_scan_update+0x44/0x3b0 [ 83.117093][ T4319] process_one_work+0x863/0x1000 [ 83.122859][ T4319] worker_thread+0xaa8/0x12a0 [ 83.128185][ T4319] kthread+0x436/0x520 [ 83.132829][ T4319] ret_from_fork+0x1f/0x30 [ 83.137848][ T4319] [ 83.137848][ T4319] -> #0 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}: [ 83.147765][ T4319] __lock_acquire+0x2c33/0x7c60 [ 83.153160][ T4319] lock_acquire+0x197/0x3f0 [ 83.158199][ T4319] __flush_work+0xdd/0x1b0 [ 83.163145][ T4319] __cancel_work_timer+0x3ac/0x520 [ 83.168793][ T4319] hci_request_cancel_all+0xcc/0x300 [ 83.174623][ T4319] hci_dev_do_close+0x4e/0x1030 [ 83.180237][ T4319] hci_rfkill_set_block+0x10a/0x190 [ 83.185980][ T4319] rfkill_set_block+0x1c6/0x420 [ 83.191375][ T4319] rfkill_fop_write+0x458/0x560 [ 83.196759][ T4319] vfs_write+0x300/0xd00 [ 83.201547][ T4319] ksys_write+0x14d/0x250 [ 83.206410][ T4319] do_syscall_64+0x4c/0xa0 [ 83.211385][ T4319] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 83.217896][ T4319] [ 83.217896][ T4319] other info that might help us debug this: [ 83.217896][ T4319] [ 83.228129][ T4319] Chain exists of: [ 83.228129][ T4319] (work_completion)(&hdev->bg_scan_update) --> &data->open_mutex --> rfkill_global_mutex [ 83.228129][ T4319] [ 83.244317][ T4319] Possible unsafe locking scenario: [ 83.244317][ T4319] [ 83.251774][ T4319] CPU0 CPU1 [ 83.257141][ T4319] ---- ---- [ 83.262508][ T4319] lock(rfkill_global_mutex); [ 83.267284][ T4319] lock(&data->open_mutex); [ 83.274411][ T4319] lock(rfkill_global_mutex); [ 83.281705][ T4319] lock((work_completion)(&hdev->bg_scan_update)); [ 83.288314][ T4319] [ 83.288314][ T4319] *** DEADLOCK *** [ 83.288314][ T4319] [ 83.296458][ T4319] 1 lock held by syz.0.17/4319: [ 83.301315][ T4319] #0: ffffffff8d4c0768 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x19e/0x560 [ 83.311434][ T4319] [ 83.311434][ T4319] stack backtrace: [ 83.317328][ T4319] CPU: 1 PID: 4319 Comm: syz.0.17 Not tainted syzkaller #0 [ 83.324658][ T4319] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025 [ 83.334828][ T4319] Call Trace: [ 83.338110][ T4319] [ 83.341053][ T4319] dump_stack_lvl+0x168/0x230 [ 83.345748][ T4319] ? load_image+0x3b0/0x3b0 [ 83.350258][ T4319] ? show_regs_print_info+0x20/0x20 [ 83.355474][ T4319] ? print_circular_bug+0x12b/0x1a0 [ 83.360673][ T4319] check_noncircular+0x274/0x310 [ 83.365616][ T4319] ? add_chain_block+0x940/0x940 [ 83.370552][ T4319] ? lockdep_lock+0xdc/0x1e0 [ 83.375142][ T4319] ? __lock_acquire+0x12d9/0x7c60 [ 83.380260][ T4319] ? lockdep_lock+0x1e0/0x1e0 [ 83.384941][ T4319] ? mark_lock+0x94/0x320 [ 83.389273][ T4319] __lock_acquire+0x2c33/0x7c60 [ 83.394131][ T4319] ? rcu_lock_release+0x5/0x20 [ 83.398980][ T4319] ? verify_lock_unused+0x140/0x140 [ 83.404203][ T4319] lock_acquire+0x197/0x3f0 [ 83.408744][ T4319] ? __flush_work+0xc1/0x1b0 [ 83.413357][ T4319] ? __lock_acquire+0x7c60/0x7c60 [ 83.418683][ T4319] ? read_lock_is_recursive+0x10/0x10 [ 83.424428][ T4319] ? start_flush_work+0x776/0x820 [ 83.429468][ T4319] __flush_work+0xdd/0x1b0 [ 83.433885][ T4319] ? __flush_work+0xc1/0x1b0 [ 83.438477][ T4319] ? flush_work+0x20/0x20 [ 83.442823][ T4319] ? try_to_grab_pending+0xf3/0x7e0 [ 83.448039][ T4319] ? lockdep_hardirqs_off+0x70/0x100 [ 83.453326][ T4319] ? mark_lock+0x94/0x320 [ 83.457654][ T4319] ? lockdep_hardirqs_on_prepare+0x3fc/0x760 [ 83.463637][ T4319] ? lock_chain_count+0x20/0x20 [ 83.468485][ T4319] ? mark_lock+0x94/0x320 [ 83.472840][ T4319] ? __cancel_work_timer+0x331/0x520 [ 83.478131][ T4319] __cancel_work_timer+0x3ac/0x520 [ 83.483238][ T4319] ? cancel_work_sync+0x20/0x20 [ 83.488100][ T4319] ? __cancel_work+0x1f4/0x2d0 [ 83.492858][ T4319] ? lockdep_hardirqs_on+0x94/0x140 [ 83.498050][ T4319] ? __cancel_work+0x26f/0x2d0 [ 83.502808][ T4319] ? cancel_work+0x20/0x20 [ 83.507256][ T4319] ? lock_chain_count+0x20/0x20 [ 83.512104][ T4319] hci_request_cancel_all+0xcc/0x300 [ 83.517387][ T4319] hci_dev_do_close+0x4e/0x1030 [ 83.522236][ T4319] ? _raw_spin_unlock_irqrestore+0xaa/0x100 [ 83.528123][ T4319] ? _raw_spin_unlock+0x40/0x40 [ 83.532968][ T4319] hci_rfkill_set_block+0x10a/0x190 [ 83.538167][ T4319] ? rcu_lock_release+0x20/0x20 [ 83.543016][ T4319] rfkill_set_block+0x1c6/0x420 [ 83.547884][ T4319] rfkill_fop_write+0x458/0x560 [ 83.552759][ T4319] ? verify_lock_unused+0x140/0x140 [ 83.557955][ T4319] ? rfkill_fop_read+0x4b0/0x4b0 [ 83.562895][ T4319] ? common_file_perm+0x140/0x1c0 [ 83.567916][ T4319] ? fsnotify_perm+0x5d/0x560 [ 83.572588][ T4319] ? security_file_permission+0x75/0xa0 [ 83.578130][ T4319] ? rfkill_fop_read+0x4b0/0x4b0 [ 83.583156][ T4319] vfs_write+0x300/0xd00 [ 83.587401][ T4319] ? file_end_write+0x250/0x250 [ 83.592255][ T4319] ? __context_tracking_exit+0x4c/0x80 [ 83.597716][ T4319] ? __lock_acquire+0x7c60/0x7c60 [ 83.602740][ T4319] ? __fdget_pos+0x1e2/0x370 [ 83.607326][ T4319] ksys_write+0x14d/0x250 [ 83.611652][ T4319] ? __ia32_sys_read+0x80/0x80 [ 83.616412][ T4319] ? lockdep_hardirqs_on+0x94/0x140 [ 83.621609][ T4319] do_syscall_64+0x4c/0xa0 [ 83.626020][ T4319] ? clear_bhb_loop+0x30/0x80 [ 83.630700][ T4319] ? clear_bhb_loop+0x30/0x80 [ 83.635377][ T4319] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 83.641277][ T4319] RIP: 0033:0x7f1b15565ec9 [ 83.645691][ T4319] Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48 [ 83.665287][ T4319] RSP: 002b:00007ffd3d545b98 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 83.673694][ T4319] RAX: ffffffffffffffda RBX: 00007f1b157bcfa0 RCX: 00007f1b15565ec9 [ 83.681663][ T4319] RDX: 0000000000000008 RSI: 0000200000000080 RDI: 0000000000000003 [ 83.689629][ T4319] RBP: 00007f1b155e8f91 R08: 0000000000000000 R09: 0000000000000000 [ 83.697592][ T4319] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 83.705557][ T4319] R13: 00007f1b157bcfa0 R14: 00007f1b157bcfa0 R15: 0000000000000003 [ 83.713532][ T4319] [ 83.720896][ T7] Bluetooth: hci0: command 0x040f tx timeout