Warning: Permanently added '10.128.1.87' (ED25519) to the list of known hosts. 2026/06/27 21:41:56 parsed 1 programs 2026/06/27 21:41:56 serving rpc on tcp://35159 [ 69.825854][ T4200] cgroup: Unknown subsys name 'net' [ 69.987250][ T4200] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size = 127995904 bytes [ 71.313416][ T1422] ieee802154 phy0 wpan0: encryption failed: -22 [ 71.319926][ T1422] ieee802154 phy1 wpan1: encryption failed: -22 [ 71.516548][ T4200] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k FS [ 73.803257][ T154] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 73.821724][ T154] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 73.846564][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 73.863397][ T4240] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 73.872384][ T4240] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 73.880734][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 75.539590][ T4287] chnl_net:caif_netlink_parms(): no params data found [ 75.586405][ T4287] bridge0: port 1(bridge_slave_0) entered blocking state [ 75.594141][ T4287] bridge0: port 1(bridge_slave_0) entered disabled state [ 75.602445][ T4287] device bridge_slave_0 entered promiscuous mode [ 75.611982][ T4287] bridge0: port 2(bridge_slave_1) entered blocking state [ 75.619080][ T4287] bridge0: port 2(bridge_slave_1) entered disabled state [ 75.627169][ T4287] device bridge_slave_1 entered promiscuous mode [ 75.650227][ T4287] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 75.661520][ T4287] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 75.683815][ T4287] team0: Port device team_slave_0 added [ 75.692053][ T4287] team0: Port device team_slave_1 added [ 75.709430][ T4287] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 75.716655][ T4287] 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. [ 75.743097][ T4287] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 75.755750][ T4287] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 75.762967][ T4287] 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. [ 75.789417][ T4287] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 75.840728][ T4287] device hsr_slave_0 entered promiscuous mode [ 75.847399][ T4287] device hsr_slave_1 entered promiscuous mode [ 75.985135][ T4287] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 75.995362][ T4287] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 76.004779][ T4287] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 76.014640][ T4287] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 76.058341][ T4287] bridge0: port 2(bridge_slave_1) entered blocking state [ 76.065548][ T4287] bridge0: port 2(bridge_slave_1) entered forwarding state [ 76.073458][ T4287] bridge0: port 1(bridge_slave_0) entered blocking state [ 76.080577][ T4287] bridge0: port 1(bridge_slave_0) entered forwarding state [ 76.143803][ T4287] 8021q: adding VLAN 0 to HW filter on device bond0 [ 76.178297][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 76.187591][ T144] bridge0: port 1(bridge_slave_0) entered disabled state [ 76.196782][ T144] bridge0: port 2(bridge_slave_1) entered disabled state [ 76.204951][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 76.218655][ T4287] 8021q: adding VLAN 0 to HW filter on device team0 [ 76.253913][ T4240] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 76.263038][ T4240] bridge0: port 1(bridge_slave_0) entered blocking state [ 76.270135][ T4240] bridge0: port 1(bridge_slave_0) entered forwarding state [ 76.283453][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 76.293409][ T144] bridge0: port 2(bridge_slave_1) entered blocking state [ 76.300529][ T144] bridge0: port 2(bridge_slave_1) entered forwarding state [ 76.334341][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 76.345412][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 76.358564][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 76.370683][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 76.397663][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 76.408536][ T4287] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 76.523441][ T4240] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 76.531080][ T4240] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 76.542836][ T4287] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 76.562132][ T4240] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 76.571926][ T4240] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 76.627071][ T4240] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 76.636629][ T4240] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 76.646912][ T4240] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 76.655058][ T4240] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 76.664203][ T4287] device veth0_vlan entered promiscuous mode [ 76.679492][ T4287] device veth1_vlan entered promiscuous mode [ 76.706448][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 76.715218][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 76.724541][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 76.733402][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 76.745748][ T4287] device veth0_macvtap entered promiscuous mode [ 76.759556][ T4287] device veth1_macvtap entered promiscuous mode [ 76.778570][ T4287] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 76.788878][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 76.798316][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 76.808049][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 76.818111][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 76.839315][ T4287] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 76.848826][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 76.859348][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 76.872141][ T4287] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 76.883179][ T4287] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 76.892329][ T4287] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 76.901295][ T4287] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 77.027833][ T4287] syz-executor (4287) used greatest stack depth: 20304 bytes left 2026/06/27 21:42:06 executed programs: 0 [ 77.858908][ T4305] chnl_net:caif_netlink_parms(): no params data found [ 77.917661][ T4305] bridge0: port 1(bridge_slave_0) entered blocking state [ 77.924923][ T4305] bridge0: port 1(bridge_slave_0) entered disabled state [ 77.933856][ T4305] device bridge_slave_0 entered promiscuous mode [ 77.942639][ T4305] bridge0: port 2(bridge_slave_1) entered blocking state [ 77.949787][ T4305] bridge0: port 2(bridge_slave_1) entered disabled state [ 77.958816][ T4305] device bridge_slave_1 entered promiscuous mode [ 77.985072][ T4305] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 77.997185][ T4305] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 78.028784][ T4305] team0: Port device team_slave_0 added [ 78.040368][ T4305] team0: Port device team_slave_1 added [ 78.063622][ T4305] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 78.070832][ T4305] 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. [ 78.097146][ T4305] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 78.110371][ T4305] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 78.117907][ T4305] 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. [ 78.144037][ T4305] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 78.181583][ T4305] device hsr_slave_0 entered promiscuous mode [ 78.188443][ T4305] device hsr_slave_1 entered promiscuous mode [ 78.196351][ T4305] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 78.204577][ T4305] Cannot create hsr debugfs directory [ 78.297671][ T4305] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 79.801408][ T23] Bluetooth: hci0: command 0x0409 tx timeout [ 81.138011][ T4305] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 81.628137][ T4305] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 81.689292][ T4305] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 81.839980][ T4305] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 81.851213][ T4305] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 81.860092][ T4305] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 81.869916][ T4305] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 81.876999][ T1107] Bluetooth: hci0: command 0x041b tx timeout [ 81.937167][ T4305] 8021q: adding VLAN 0 to HW filter on device bond0 [ 81.965068][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 81.973410][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 81.997469][ T4305] 8021q: adding VLAN 0 to HW filter on device team0 [ 82.006829][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 82.015731][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 82.025326][ T154] bridge0: port 1(bridge_slave_0) entered blocking state [ 82.032550][ T154] bridge0: port 1(bridge_slave_0) entered forwarding state [ 82.043237][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 82.068626][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 82.077741][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 82.086285][ T154] bridge0: port 2(bridge_slave_1) entered blocking state [ 82.093537][ T154] bridge0: port 2(bridge_slave_1) entered forwarding state [ 82.104400][ T4240] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 82.117811][ T4240] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 82.144904][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 82.154900][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 82.164669][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 82.173917][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 82.182797][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 82.198813][ T9] device hsr_slave_0 left promiscuous mode [ 82.206692][ T9] device hsr_slave_1 left promiscuous mode [ 82.213634][ T9] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 82.221769][ T9] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 82.230785][ T9] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 82.238327][ T9] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 82.246423][ T9] device bridge_slave_1 left promiscuous mode [ 82.253654][ T9] bridge0: port 2(bridge_slave_1) entered disabled state [ 82.267421][ T9] device bridge_slave_0 left promiscuous mode [ 82.276510][ T9] bridge0: port 1(bridge_slave_0) entered disabled state [ 82.295531][ T9] device veth1_macvtap left promiscuous mode [ 82.301942][ T9] device veth0_macvtap left promiscuous mode [ 82.308137][ T9] device veth1_vlan left promiscuous mode [ 82.314912][ T9] device veth0_vlan left promiscuous mode [ 82.475564][ T9] team0 (unregistering): Port device team_slave_1 removed [ 82.492079][ T9] team0 (unregistering): Port device team_slave_0 removed [ 82.508940][ T9] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 82.525181][ T9] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 82.582203][ T9] bond0 (unregistering): Released all slaves [ 82.655972][ T4305] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 82.666753][ T4305] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 82.681942][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 82.692286][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 82.701987][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 82.710308][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 82.719063][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 82.830343][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 82.841508][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 82.856801][ T4305] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 82.879252][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 82.889121][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 82.906458][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 82.915772][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 82.926412][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 82.934640][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 82.945725][ T4305] device veth0_vlan entered promiscuous mode [ 82.959166][ T4305] device veth1_vlan entered promiscuous mode [ 82.977254][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 82.985542][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 82.994439][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 83.004481][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 83.014742][ T4305] device veth0_macvtap entered promiscuous mode [ 83.026878][ T4305] device veth1_macvtap entered promiscuous mode [ 83.045020][ T4305] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 83.053268][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 83.062277][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 83.072554][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 83.086938][ T4305] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 83.096241][ T4240] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 83.105978][ T4240] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 83.117913][ T4305] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 83.127398][ T4305] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 83.137561][ T4305] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 83.147394][ T4305] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 83.205685][ T4240] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 83.218382][ T4240] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 83.229967][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 83.266910][ T154] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 83.276513][ T154] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 83.285066][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 83.366612][ T4318] [ 83.368999][ T4318] ====================================================== [ 83.376039][ T4318] WARNING: possible circular locking dependency detected [ 83.383126][ T4318] syzkaller #0 Not tainted [ 83.387565][ T4318] ------------------------------------------------------ [ 83.394606][ T4318] syz.0.17/4318 is trying to acquire lock: [ 83.400432][ T4318] ffff888073f59028 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}, at: __flush_work+0xfa/0x210 [ 83.411528][ T4318] [ 83.411528][ T4318] but task is already holding lock: [ 83.418910][ T4318] ffffffff8d6c48a8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x1ae/0x560 [ 83.428601][ T4318] [ 83.428601][ T4318] which lock already depends on the new lock. [ 83.428601][ T4318] [ 83.439019][ T4318] [ 83.439019][ T4318] the existing dependency chain (in reverse order) is: [ 83.448080][ T4318] [ 83.448080][ T4318] -> #4 (rfkill_global_mutex){+.+.}-{3:3}: [ 83.456102][ T4318] __mutex_lock_common+0x1e5/0x2400 [ 83.461868][ T4318] mutex_lock_nested+0x17/0x20 [ 83.467305][ T4318] rfkill_register+0x2f/0x970 [ 83.472529][ T4318] hci_register_dev+0x459/0x980 [ 83.477927][ T4318] vhci_create_device+0x32e/0x5c0 [ 83.483499][ T4318] vhci_write+0x389/0x440 [ 83.488394][ T4318] vfs_write+0x748/0xd70 [ 83.493243][ T4318] ksys_write+0x153/0x260 [ 83.498118][ T4318] do_syscall_64+0x4c/0xa0 [ 83.503178][ T4318] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 83.509622][ T4318] [ 83.509622][ T4318] -> #3 (&data->open_mutex){+.+.}-{3:3}: [ 83.517484][ T4318] __mutex_lock_common+0x1e5/0x2400 [ 83.523234][ T4318] mutex_lock_nested+0x17/0x20 [ 83.528558][ T4318] vhci_send_frame+0x88/0x100 [ 83.533778][ T4318] hci_send_frame+0x1a9/0x2e0 [ 83.538996][ T4318] hci_tx_work+0x9b5/0x16d0 [ 83.544041][ T4318] process_one_work+0x867/0xff0 [ 83.549432][ T4318] worker_thread+0xad7/0x12a0 [ 83.554646][ T4318] kthread+0x42e/0x520 [ 83.559253][ T4318] ret_from_fork+0x1f/0x30 [ 83.564221][ T4318] [ 83.564221][ T4318] -> #2 ((work_completion)(&hdev->tx_work)){+.+.}-{0:0}: [ 83.573456][ T4318] __flush_work+0x116/0x210 [ 83.578511][ T4318] hci_dev_do_close+0x201/0x1020 [ 83.583995][ T4318] hci_unregister_dev+0x2eb/0x590 [ 83.589595][ T4318] vhci_release+0x73/0xc0 [ 83.594516][ T4318] __fput+0x212/0x8c0 [ 83.599049][ T4318] task_work_run+0x125/0x1a0 [ 83.604191][ T4318] do_exit+0x635/0x2110 [ 83.608891][ T4318] do_group_exit+0x12c/0x2f0 [ 83.614026][ T4318] get_signal+0x7eb/0x12e0 [ 83.619091][ T4318] arch_do_signal_or_restart+0xe6/0x12a0 [ 83.625376][ T4318] exit_to_user_mode_loop+0x9e/0x130 [ 83.631210][ T4318] exit_to_user_mode_prepare+0xee/0x180 [ 83.637302][ T4318] syscall_exit_to_user_mode+0x16/0x40 [ 83.643310][ T4318] do_syscall_64+0x58/0xa0 [ 83.648273][ T4318] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 83.654710][ T4318] [ 83.654710][ T4318] -> #1 (&hdev->req_lock){+.+.}-{3:3}: [ 83.662375][ T4318] __mutex_lock_common+0x1e5/0x2400 [ 83.668123][ T4318] mutex_lock_nested+0x17/0x20 [ 83.673446][ T4318] bg_scan_update+0x44/0x3b0 [ 83.678579][ T4318] process_one_work+0x867/0xff0 [ 83.683974][ T4318] worker_thread+0xad7/0x12a0 [ 83.689198][ T4318] kthread+0x42e/0x520 [ 83.693838][ T4318] ret_from_fork+0x1f/0x30 [ 83.698801][ T4318] [ 83.698801][ T4318] -> #0 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}: [ 83.708723][ T4318] __lock_acquire+0x2c66/0x7b50 [ 83.714120][ T4318] lock_acquire+0x19e/0x400 [ 83.719181][ T4318] __flush_work+0x116/0x210 [ 83.724226][ T4318] __cancel_work_timer+0x3f4/0x560 [ 83.729884][ T4318] hci_request_cancel_all+0xcc/0x300 [ 83.735714][ T4318] hci_dev_do_close+0x4e/0x1020 [ 83.741105][ T4318] hci_rfkill_set_block+0x101/0x180 [ 83.746901][ T4318] rfkill_set_block+0x1c1/0x3c0 [ 83.752324][ T4318] rfkill_fop_write+0x453/0x560 [ 83.757717][ T4318] vfs_write+0x304/0xd70 [ 83.762502][ T4318] ksys_write+0x153/0x260 [ 83.767368][ T4318] do_syscall_64+0x4c/0xa0 [ 83.772330][ T4318] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 83.778770][ T4318] [ 83.778770][ T4318] other info that might help us debug this: [ 83.778770][ T4318] [ 83.789015][ T4318] Chain exists of: [ 83.789015][ T4318] (work_completion)(&hdev->bg_scan_update) --> &data->open_mutex --> rfkill_global_mutex [ 83.789015][ T4318] [ 83.804778][ T4318] Possible unsafe locking scenario: [ 83.804778][ T4318] [ 83.812248][ T4318] CPU0 CPU1 [ 83.817634][ T4318] ---- ---- [ 83.823112][ T4318] lock(rfkill_global_mutex); [ 83.827913][ T4318] lock(&data->open_mutex); [ 83.835046][ T4318] lock(rfkill_global_mutex); [ 83.842356][ T4318] lock((work_completion)(&hdev->bg_scan_update)); [ 83.848977][ T4318] [ 83.848977][ T4318] *** DEADLOCK *** [ 83.848977][ T4318] [ 83.857158][ T4318] 1 lock held by syz.0.17/4318: [ 83.862027][ T4318] #0: ffffffff8d6c48a8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x1ae/0x560 [ 83.872208][ T4318] [ 83.872208][ T4318] stack backtrace: [ 83.878127][ T4318] CPU: 1 PID: 4318 Comm: syz.0.17 Not tainted syzkaller #0 [ 83.885458][ T4318] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 [ 83.895539][ T4318] Call Trace: [ 83.898842][ T4318] [ 83.901796][ T4318] dump_stack_lvl+0x188/0x250 [ 83.906501][ T4318] ? load_image+0x410/0x410 [ 83.911034][ T4318] ? show_regs_print_info+0x20/0x20 [ 83.916260][ T4318] ? print_circular_bug+0x12b/0x1a0 [ 83.921491][ T4318] check_noncircular+0x296/0x330 [ 83.926455][ T4318] ? look_up_lock_class+0x71/0x110 [ 83.931609][ T4318] ? add_chain_block+0x9b0/0x9b0 [ 83.936582][ T4318] ? lockdep_lock+0xf1/0x1f0 [ 83.941195][ T4318] ? __lock_acquire+0x1305/0x7b50 [ 83.946247][ T4318] ? mark_lock+0x94/0x320 [ 83.950594][ T4318] ? _find_first_zero_bit+0xd1/0xf0 [ 83.951589][ T4281] Bluetooth: hci0: command 0x040f tx timeout [ 83.955824][ T4318] __lock_acquire+0x2c66/0x7b50 [ 83.955855][ T4318] ? verify_lock_unused+0x140/0x140 [ 83.971893][ T4318] ? verify_lock_unused+0x140/0x140 [ 83.977137][ T4318] lock_acquire+0x19e/0x400 [ 83.981675][ T4318] ? __flush_work+0xfa/0x210 [ 83.986289][ T4318] ? __lock_acquire+0x7b50/0x7b50 [ 83.991342][ T4318] ? read_lock_is_recursive+0x10/0x10 [ 83.996746][ T4318] ? start_flush_work+0x784/0x830 [ 84.001794][ T4318] __flush_work+0x116/0x210 [ 84.006323][ T4318] ? __flush_work+0xfa/0x210 [ 84.010939][ T4318] ? flush_work+0x20/0x20 [ 84.015296][ T4318] ? try_to_grab_pending+0xfb/0x820 [ 84.020521][ T4318] ? mark_lock+0x94/0x320 [ 84.024877][ T4318] ? lockdep_hardirqs_on_prepare+0x448/0x7c0 [ 84.030890][ T4318] ? lock_chain_count+0x20/0x20 [ 84.035768][ T4318] ? mark_lock+0x94/0x320 [ 84.040139][ T4318] ? __cancel_work_timer+0x36a/0x560 [ 84.045450][ T4318] __cancel_work_timer+0x3f4/0x560 [ 84.050598][ T4318] ? cancel_work_sync+0x20/0x20 [ 84.055477][ T4318] ? __cancel_work+0x1f9/0x2e0 [ 84.060266][ T4318] ? lockdep_hardirqs_on+0x94/0x140 [ 84.065487][ T4318] ? __cancel_work+0x27b/0x2e0 [ 84.070275][ T4318] ? cancel_work+0x20/0x20 [ 84.074799][ T4318] hci_request_cancel_all+0xcc/0x300 [ 84.080116][ T4318] hci_dev_do_close+0x4e/0x1020 [ 84.085000][ T4318] ? _raw_spin_unlock_irqrestore+0xc1/0x120 [ 84.090937][ T4318] ? _raw_spin_unlock+0x40/0x40 [ 84.095821][ T4318] hci_rfkill_set_block+0x101/0x180 [ 84.101150][ T4318] ? rcu_lock_release+0x20/0x20 [ 84.106028][ T4318] rfkill_set_block+0x1c1/0x3c0 [ 84.110910][ T4318] rfkill_fop_write+0x453/0x560 [ 84.115807][ T4318] ? rfkill_fop_read+0x560/0x560 [ 84.120781][ T4318] ? common_file_perm+0x120/0x1c0 [ 84.125840][ T4318] ? fsnotify_perm+0x5d/0x560 [ 84.130551][ T4318] ? security_file_permission+0x75/0xa0 [ 84.136129][ T4318] ? rfkill_fop_read+0x560/0x560 [ 84.141097][ T4318] vfs_write+0x304/0xd70 [ 84.145375][ T4318] ? file_end_write+0x250/0x250 [ 84.150256][ T4318] ? __context_tracking_exit+0x4c/0x80 [ 84.155845][ T4318] ? __fdget_pos+0x1e2/0x370 [ 84.160460][ T4318] ksys_write+0x153/0x260 [ 84.164814][ T4318] ? __ia32_sys_read+0x80/0x80 [ 84.169605][ T4318] ? lockdep_hardirqs_on+0x94/0x140 [ 84.174825][ T4318] do_syscall_64+0x4c/0xa0 [ 84.179256][ T4318] ? clear_bhb_loop+0x30/0x80 [ 84.183958][ T4318] ? clear_bhb_loop+0x30/0x80 [ 84.188664][ T4318] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 84.194600][ T4318] RIP: 0033:0x7efc44487e59 [ 84.199064][ T4318] 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 [ 84.218697][ T4318] RSP: 002b:00007ffdfb040308 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 84.227136][ T4318] RAX: ffffffffffffffda RBX: 00007efc44700fa0 RCX: 00007efc44487e59 [ 84.235247][ T4318] RDX: 0000000000000008 RSI: 0000200000000040 RDI: 0000000000000003 [ 84.243232][ T4318] RBP: 00007efc4451de6f R08: 0000000000000000 R09: 0000000000000000 [ 84.251229][ T4318] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 84.259213][ T4318] R13: 00007efc44700fac R14: 00007efc44700fa0 R15: 00007efc44700fa0 [ 84.267214][ T4318]