Warning: Permanently added '10.128.1.42' (ED25519) to the list of known hosts. 2026/07/20 07:34:13 parsed 1 programs 2026/07/20 07:34:13 serving rpc on tcp://46573 [ 69.230578][ T4198] cgroup: Unknown subsys name 'net' [ 69.369981][ T4198] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size = 127995904 bytes [ 70.908868][ T4198] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k FS [ 71.308378][ T1421] ieee802154 phy0 wpan0: encryption failed: -22 [ 71.314992][ T1421] ieee802154 phy1 wpan1: encryption failed: -22 [ 72.816401][ T154] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 72.824724][ T154] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 72.840836][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 72.860571][ T154] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 72.868527][ T154] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 72.882635][ T1225] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 74.630324][ T4256] chnl_net:caif_netlink_parms(): no params data found [ 74.730678][ T4256] bridge0: port 1(bridge_slave_0) entered blocking state [ 74.738859][ T4256] bridge0: port 1(bridge_slave_0) entered disabled state [ 74.748818][ T4256] device bridge_slave_0 entered promiscuous mode [ 74.764493][ T4256] bridge0: port 2(bridge_slave_1) entered blocking state [ 74.778602][ T4256] bridge0: port 2(bridge_slave_1) entered disabled state [ 74.786801][ T4256] device bridge_slave_1 entered promiscuous mode [ 74.806845][ T4256] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 74.817987][ T4256] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 74.841741][ T4256] team0: Port device team_slave_0 added [ 74.849707][ T4256] team0: Port device team_slave_1 added [ 74.867898][ T4256] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 74.876048][ T4256] 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. [ 74.902448][ T4256] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 74.915880][ T4256] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 74.922880][ T4256] 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. [ 74.948858][ T4256] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 74.981568][ T4256] device hsr_slave_0 entered promiscuous mode [ 74.989057][ T4256] device hsr_slave_1 entered promiscuous mode [ 75.099000][ T4256] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 75.109787][ T4256] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 75.119872][ T4256] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 75.129163][ T4256] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 75.152951][ T4256] bridge0: port 2(bridge_slave_1) entered blocking state [ 75.160243][ T4256] bridge0: port 2(bridge_slave_1) entered forwarding state [ 75.168545][ T4256] bridge0: port 1(bridge_slave_0) entered blocking state [ 75.175760][ T4256] bridge0: port 1(bridge_slave_0) entered forwarding state [ 75.227777][ T4256] 8021q: adding VLAN 0 to HW filter on device bond0 [ 75.241084][ T1258] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 75.251017][ T1258] bridge0: port 1(bridge_slave_0) entered disabled state [ 75.261671][ T1258] bridge0: port 2(bridge_slave_1) entered disabled state [ 75.269923][ T1258] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 75.302989][ T4256] 8021q: adding VLAN 0 to HW filter on device team0 [ 75.316389][ T1225] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 75.326257][ T1225] bridge0: port 1(bridge_slave_0) entered blocking state [ 75.333386][ T1225] bridge0: port 1(bridge_slave_0) entered forwarding state [ 75.345470][ T1225] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 75.354427][ T1225] bridge0: port 2(bridge_slave_1) entered blocking state [ 75.361517][ T1225] bridge0: port 2(bridge_slave_1) entered forwarding state [ 75.402011][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 75.411047][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 75.425844][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 75.440542][ T1258] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 75.453683][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 75.491241][ T4256] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 75.612488][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 75.620204][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 75.632939][ T4256] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 75.651407][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 75.660847][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 75.679003][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 75.687927][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 75.697324][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 75.706440][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 75.744327][ T4256] device veth0_vlan entered promiscuous mode [ 75.756285][ T4256] device veth1_vlan entered promiscuous mode [ 75.775873][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 75.785853][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 75.794986][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 75.803891][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 75.815852][ T4256] device veth0_macvtap entered promiscuous mode [ 75.827396][ T4256] device veth1_macvtap entered promiscuous mode [ 75.864236][ T4256] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 75.871814][ T1258] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 75.880691][ T1258] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 75.889444][ T1258] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 75.898204][ T1258] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 75.911557][ T4256] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 75.920372][ T1258] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 75.929077][ T1258] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 75.958934][ T4256] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 75.968559][ T4256] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 75.977402][ T4256] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 75.986152][ T4256] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 2026/07/20 07:34:23 executed programs: 0 [ 77.485550][ T4305] chnl_net:caif_netlink_parms(): no params data found [ 77.544376][ T4305] bridge0: port 1(bridge_slave_0) entered blocking state [ 77.551566][ T4305] bridge0: port 1(bridge_slave_0) entered disabled state [ 77.559860][ T4305] device bridge_slave_0 entered promiscuous mode [ 77.568460][ T4305] bridge0: port 2(bridge_slave_1) entered blocking state [ 77.575683][ T4305] bridge0: port 2(bridge_slave_1) entered disabled state [ 77.583885][ T4305] device bridge_slave_1 entered promiscuous mode [ 77.610480][ T4305] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 77.625349][ T4305] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 77.659485][ T4305] team0: Port device team_slave_0 added [ 77.668108][ T4305] team0: Port device team_slave_1 added [ 77.690722][ T4305] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 77.697989][ 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. [ 77.724974][ T4305] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 77.738379][ T4305] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 77.745735][ 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. [ 77.772133][ T4305] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 77.811057][ T4305] device hsr_slave_0 entered promiscuous mode [ 77.818165][ T4305] device hsr_slave_1 entered promiscuous mode [ 77.825369][ T4305] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 77.833924][ T4305] Cannot create hsr debugfs directory [ 77.924472][ T4305] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 79.394124][ T1325] Bluetooth: hci0: command 0x0409 tx timeout [ 80.751955][ T4305] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 80.839706][ T4305] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 80.896641][ T4305] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 81.002255][ T4305] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 81.017213][ T4305] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 81.033186][ T4305] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 81.042181][ T4305] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 81.105507][ T4305] 8021q: adding VLAN 0 to HW filter on device bond0 [ 81.117902][ T1225] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 81.127497][ T1225] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 81.138229][ T4305] 8021q: adding VLAN 0 to HW filter on device team0 [ 81.162748][ T1225] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 81.171858][ T1225] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 81.181222][ T1225] bridge0: port 1(bridge_slave_0) entered blocking state [ 81.188399][ T1225] bridge0: port 1(bridge_slave_0) entered forwarding state [ 81.198593][ T1225] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 81.226548][ T1225] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 81.236609][ T1225] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 81.245153][ T1225] bridge0: port 2(bridge_slave_1) entered blocking state [ 81.252207][ T1225] bridge0: port 2(bridge_slave_1) entered forwarding state [ 81.262330][ T1225] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 81.288214][ T1225] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 81.299982][ T1225] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 81.309365][ T1225] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 81.319047][ T1225] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 81.329187][ T1225] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 81.339434][ T1225] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 81.361474][ T1225] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 81.370167][ T1225] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 81.383768][ T4305] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 81.396899][ T4305] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 81.405169][ T1225] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 81.414663][ T1225] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 81.430386][ T9] device hsr_slave_0 left promiscuous mode [ 81.437525][ T9] device hsr_slave_1 left promiscuous mode [ 81.444769][ T9] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 81.452229][ T9] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 81.464518][ T4276] Bluetooth: hci0: command 0x041b tx timeout [ 81.473146][ T9] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 81.480615][ T9] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 81.488820][ T9] device bridge_slave_1 left promiscuous mode [ 81.496491][ T9] bridge0: port 2(bridge_slave_1) entered disabled state [ 81.510238][ T9] device bridge_slave_0 left promiscuous mode [ 81.516673][ T9] bridge0: port 1(bridge_slave_0) entered disabled state [ 81.535244][ T9] device veth1_macvtap left promiscuous mode [ 81.541539][ T9] device veth0_macvtap left promiscuous mode [ 81.548018][ T9] device veth1_vlan left promiscuous mode [ 81.555008][ T9] device veth0_vlan left promiscuous mode [ 81.727322][ T9] team0 (unregistering): Port device team_slave_1 removed [ 81.747940][ T9] team0 (unregistering): Port device team_slave_0 removed [ 81.760960][ T9] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 81.775436][ T9] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 81.841059][ T9] bond0 (unregistering): Released all slaves [ 82.014244][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 82.021764][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 82.035426][ T4305] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 82.066969][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 82.075980][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 82.095171][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 82.104653][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 82.114956][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 82.122823][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 82.133279][ T4305] device veth0_vlan entered promiscuous mode [ 82.151122][ T4305] device veth1_vlan entered promiscuous mode [ 82.174903][ T1225] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 82.185525][ T1225] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 82.199258][ T4305] device veth0_macvtap entered promiscuous mode [ 82.210568][ T4305] device veth1_macvtap entered promiscuous mode [ 82.227114][ T4305] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 82.234822][ T1225] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 82.243010][ T1225] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 82.251853][ T1225] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 82.260702][ T1225] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 82.280739][ T4305] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 82.289763][ T1225] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 82.299891][ T1225] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 82.311507][ T4305] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 82.321095][ T4305] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 82.329988][ T4305] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 82.338755][ T4305] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 82.416965][ T144] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 82.438231][ T144] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 82.458877][ T1225] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 82.473738][ T144] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 82.481609][ T144] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 82.490375][ T1225] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 82.635863][ T4323] [ 82.638279][ T4323] ====================================================== [ 82.645322][ T4323] WARNING: possible circular locking dependency detected [ 82.652374][ T4323] syzkaller #0 Not tainted [ 82.656815][ T4323] ------------------------------------------------------ [ 82.665441][ T4323] syz.0.17/4323 is trying to acquire lock: [ 82.671362][ T4323] ffff888025abd028 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}, at: __flush_work+0xfa/0x210 [ 82.682562][ T4323] [ 82.682562][ T4323] but task is already holding lock: [ 82.689971][ T4323] ffffffff8d6d3c28 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x1ae/0x560 [ 82.699846][ T4323] [ 82.699846][ T4323] which lock already depends on the new lock. [ 82.699846][ T4323] [ 82.710375][ T4323] [ 82.710375][ T4323] the existing dependency chain (in reverse order) is: [ 82.719416][ T4323] [ 82.719416][ T4323] -> #4 (rfkill_global_mutex){+.+.}-{3:3}: [ 82.727451][ T4323] __mutex_lock_common+0x1e5/0x2400 [ 82.733221][ T4323] mutex_lock_nested+0x17/0x20 [ 82.738544][ T4323] rfkill_register+0x2f/0x970 [ 82.743782][ T4323] hci_register_dev+0x459/0x980 [ 82.749200][ T4323] vhci_create_device+0x32e/0x5c0 [ 82.754786][ T4323] vhci_write+0x389/0x440 [ 82.759675][ T4323] vfs_write+0x748/0xd70 [ 82.764477][ T4323] ksys_write+0x153/0x260 [ 82.769356][ T4323] do_syscall_64+0x4c/0xa0 [ 82.774329][ T4323] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 82.780779][ T4323] [ 82.780779][ T4323] -> #3 (&data->open_mutex){+.+.}-{3:3}: [ 82.788637][ T4323] __mutex_lock_common+0x1e5/0x2400 [ 82.794398][ T4323] mutex_lock_nested+0x17/0x20 [ 82.799717][ T4323] vhci_send_frame+0x88/0x100 [ 82.804949][ T4323] hci_send_frame+0x1a9/0x2e0 [ 82.810172][ T4323] hci_tx_work+0x9b5/0x16d0 [ 82.815232][ T4323] process_one_work+0x867/0xff0 [ 82.820643][ T4323] worker_thread+0xad7/0x12a0 [ 82.825870][ T4323] kthread+0x42e/0x520 [ 82.830489][ T4323] ret_from_fork+0x1f/0x30 [ 82.835465][ T4323] [ 82.835465][ T4323] -> #2 ((work_completion)(&hdev->tx_work)){+.+.}-{0:0}: [ 82.844841][ T4323] __flush_work+0x116/0x210 [ 82.849907][ T4323] hci_dev_do_close+0x201/0x1020 [ 82.855398][ T4323] hci_unregister_dev+0x2eb/0x590 [ 82.860979][ T4323] vhci_release+0x73/0xc0 [ 82.865858][ T4323] __fput+0x212/0x8c0 [ 82.870402][ T4323] task_work_run+0x125/0x1a0 [ 82.875552][ T4323] do_exit+0x635/0x2110 [ 82.880262][ T4323] do_group_exit+0x12c/0x2f0 [ 82.885405][ T4323] get_signal+0x7eb/0x12e0 [ 82.890376][ T4323] arch_do_signal_or_restart+0xe6/0x12a0 [ 82.896564][ T4323] exit_to_user_mode_loop+0x9e/0x130 [ 82.902425][ T4323] exit_to_user_mode_prepare+0xee/0x180 [ 82.909117][ T4323] syscall_exit_to_user_mode+0x16/0x40 [ 82.915152][ T4323] do_syscall_64+0x58/0xa0 [ 82.920237][ T4323] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 82.926962][ T4323] [ 82.926962][ T4323] -> #1 (&hdev->req_lock){+.+.}-{3:3}: [ 82.934656][ T4323] __mutex_lock_common+0x1e5/0x2400 [ 82.940426][ T4323] mutex_lock_nested+0x17/0x20 [ 82.945758][ T4323] bg_scan_update+0x44/0x3b0 [ 82.950904][ T4323] process_one_work+0x867/0xff0 [ 82.956315][ T4323] worker_thread+0xad7/0x12a0 [ 82.961676][ T4323] kthread+0x42e/0x520 [ 82.966406][ T4323] ret_from_fork+0x1f/0x30 [ 82.971384][ T4323] [ 82.971384][ T4323] -> #0 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}: [ 82.981335][ T4323] __lock_acquire+0x2c66/0x7b50 [ 82.986874][ T4323] lock_acquire+0x19e/0x400 [ 82.991949][ T4323] __flush_work+0x116/0x210 [ 82.997021][ T4323] __cancel_work_timer+0x3f4/0x560 [ 83.002696][ T4323] hci_request_cancel_all+0xcc/0x300 [ 83.008571][ T4323] hci_dev_do_close+0x4e/0x1020 [ 83.013979][ T4323] hci_rfkill_set_block+0x101/0x180 [ 83.019741][ T4323] rfkill_set_block+0x1c1/0x3c0 [ 83.025162][ T4323] rfkill_fop_write+0x453/0x560 [ 83.030580][ T4323] vfs_write+0x304/0xd70 [ 83.035384][ T4323] ksys_write+0x153/0x260 [ 83.040281][ T4323] do_syscall_64+0x4c/0xa0 [ 83.045281][ T4323] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 83.051849][ T4323] [ 83.051849][ T4323] other info that might help us debug this: [ 83.051849][ T4323] [ 83.062106][ T4323] Chain exists of: [ 83.062106][ T4323] (work_completion)(&hdev->bg_scan_update) --> &data->open_mutex --> rfkill_global_mutex [ 83.062106][ T4323] [ 83.077879][ T4323] Possible unsafe locking scenario: [ 83.077879][ T4323] [ 83.085363][ T4323] CPU0 CPU1 [ 83.090842][ T4323] ---- ---- [ 83.096233][ T4323] lock(rfkill_global_mutex); [ 83.101037][ T4323] lock(&data->open_mutex); [ 83.108177][ T4323] lock(rfkill_global_mutex); [ 83.115496][ T4323] lock((work_completion)(&hdev->bg_scan_update)); [ 83.122120][ T4323] [ 83.122120][ T4323] *** DEADLOCK *** [ 83.122120][ T4323] [ 83.130295][ T4323] 1 lock held by syz.0.17/4323: [ 83.135170][ T4323] #0: ffffffff8d6d3c28 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x1ae/0x560 [ 83.145334][ T4323] [ 83.145334][ T4323] stack backtrace: [ 83.151359][ T4323] CPU: 0 PID: 4323 Comm: syz.0.17 Not tainted syzkaller #0 [ 83.158596][ T4323] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 [ 83.168708][ T4323] Call Trace: [ 83.172023][ T4323] [ 83.174991][ T4323] dump_stack_lvl+0x188/0x250 [ 83.179708][ T4323] ? load_image+0x410/0x410 [ 83.184254][ T4323] ? show_regs_print_info+0x20/0x20 [ 83.189505][ T4323] ? print_circular_bug+0x12b/0x1a0 [ 83.194837][ T4323] check_noncircular+0x296/0x330 [ 83.199821][ T4323] ? look_up_lock_class+0x71/0x110 [ 83.204977][ T4323] ? add_chain_block+0x9b0/0x9b0 [ 83.209955][ T4323] ? lockdep_lock+0xf1/0x1f0 [ 83.214601][ T4323] ? __lock_acquire+0x1305/0x7b50 [ 83.219714][ T4323] ? mark_lock+0x94/0x320 [ 83.224080][ T4323] ? _find_first_zero_bit+0xd1/0xf0 [ 83.229323][ T4323] __lock_acquire+0x2c66/0x7b50 [ 83.234233][ T4323] ? verify_lock_unused+0x140/0x140 [ 83.239485][ T4323] ? verify_lock_unused+0x140/0x140 [ 83.244749][ T4323] lock_acquire+0x19e/0x400 [ 83.249300][ T4323] ? __flush_work+0xfa/0x210 [ 83.254129][ T4323] ? __lock_acquire+0x7b50/0x7b50 [ 83.259233][ T4323] ? read_lock_is_recursive+0x10/0x10 [ 83.264666][ T4323] ? start_flush_work+0x784/0x830 [ 83.269743][ T4323] __flush_work+0x116/0x210 [ 83.274284][ T4323] ? __flush_work+0xfa/0x210 [ 83.278912][ T4323] ? flush_work+0x20/0x20 [ 83.283353][ T4323] ? try_to_grab_pending+0xfb/0x820 [ 83.289355][ T4323] ? mark_lock+0x94/0x320 [ 83.293719][ T4323] ? lockdep_hardirqs_on_prepare+0x448/0x7c0 [ 83.299739][ T4323] ? lock_chain_count+0x20/0x20 [ 83.304627][ T4323] ? mark_lock+0x94/0x320 [ 83.308993][ T4323] ? __cancel_work_timer+0x36a/0x560 [ 83.314317][ T4323] __cancel_work_timer+0x3f4/0x560 [ 83.319467][ T4323] ? cancel_work_sync+0x20/0x20 [ 83.324349][ T4323] ? __cancel_work+0x1f9/0x2e0 [ 83.329210][ T4323] ? lockdep_hardirqs_on+0x94/0x140 [ 83.334525][ T4323] ? __cancel_work+0x27b/0x2e0 [ 83.339320][ T4323] ? cancel_work+0x20/0x20 [ 83.343772][ T4323] hci_request_cancel_all+0xcc/0x300 [ 83.349099][ T4323] hci_dev_do_close+0x4e/0x1020 [ 83.354148][ T4323] ? _raw_spin_unlock_irqrestore+0xc1/0x120 [ 83.360082][ T4323] ? _raw_spin_unlock+0x40/0x40 [ 83.365334][ T4323] hci_rfkill_set_block+0x101/0x180 [ 83.370568][ T4323] ? rcu_lock_release+0x20/0x20 [ 83.375444][ T4323] rfkill_set_block+0x1c1/0x3c0 [ 83.380330][ T4323] rfkill_fop_write+0x453/0x560 [ 83.385226][ T4323] ? rfkill_fop_read+0x560/0x560 [ 83.390205][ T4323] ? common_file_perm+0xf0/0x1c0 [ 83.395174][ T4323] ? fsnotify_perm+0x5d/0x560 [ 83.399883][ T4323] ? security_file_permission+0x75/0xa0 [ 83.405460][ T4323] ? rfkill_fop_read+0x560/0x560 [ 83.410470][ T4323] vfs_write+0x304/0xd70 [ 83.414782][ T4323] ? file_end_write+0x250/0x250 [ 83.419664][ T4323] ? __context_tracking_exit+0x4c/0x80 [ 83.425161][ T4323] ? __fdget_pos+0x1e2/0x370 [ 83.429779][ T4323] ksys_write+0x153/0x260 [ 83.434140][ T4323] ? __ia32_sys_read+0x80/0x80 [ 83.438931][ T4323] ? lockdep_hardirqs_on+0x94/0x140 [ 83.444160][ T4323] do_syscall_64+0x4c/0xa0 [ 83.448603][ T4323] ? clear_bhb_loop+0x30/0x80 [ 83.453330][ T4323] ? clear_bhb_loop+0x30/0x80 [ 83.458031][ T4323] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 83.463975][ T4323] RIP: 0033:0x7f0d6ebafe99 [ 83.468427][ T4323] 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 [ 83.488275][ T4323] RSP: 002b:00007ffc1f310a18 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 83.496729][ T4323] RAX: ffffffffffffffda RBX: 00007f0d6ee37fa0 RCX: 00007f0d6ebafe99 [ 83.504734][ T4323] RDX: 0000000000000008 RSI: 0000200000000100 RDI: 0000000000000003 [ 83.512733][ T4323] RBP: 00007f0d6ec45eaf R08: 0000000000000000 R09: 0000000000000000 [ 83.526184][ T4323] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 83.534396][ T4323] R13: 00007f0d6ee37fac R14: 00007f0d6ee37fa0 R15: 00007f0d6ee37fa0 [ 83.542591][ T4323] [ 83.565596][ T4200] Bluetooth: hci0: command 0x040f tx timeout