Warning: Permanently added '10.128.0.56' (ED25519) to the list of known hosts. 2026/05/03 18:45:19 parsed 1 programs [ 68.546017][ T4200] cgroup: Unknown subsys name 'net' [ 68.677565][ T4200] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size = 127995904 bytes [ 70.145578][ T4200] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k FS [ 71.234711][ T1421] ieee802154 phy0 wpan0: encryption failed: -22 [ 71.241360][ T1421] ieee802154 phy1 wpan1: encryption failed: -22 [ 72.152822][ T1436] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 72.160923][ T1436] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 72.179198][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 72.194843][ T144] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 72.202786][ T144] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 72.210511][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 72.736031][ T4240] chnl_net:caif_netlink_parms(): no params data found [ 72.801999][ T4240] bridge0: port 1(bridge_slave_0) entered blocking state [ 72.809882][ T4240] bridge0: port 1(bridge_slave_0) entered disabled state [ 72.818544][ T4240] device bridge_slave_0 entered promiscuous mode [ 72.828800][ T4240] bridge0: port 2(bridge_slave_1) entered blocking state [ 72.836205][ T4240] bridge0: port 2(bridge_slave_1) entered disabled state [ 72.844784][ T4240] device bridge_slave_1 entered promiscuous mode [ 72.870591][ T4240] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 72.885553][ T4240] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 72.915182][ T4240] team0: Port device team_slave_0 added [ 72.924867][ T4240] team0: Port device team_slave_1 added [ 72.949102][ T4240] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 72.956198][ T4240] 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. [ 72.984096][ T4240] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 72.997441][ T4240] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 73.005838][ T4240] 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. [ 73.033208][ T4240] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 73.074343][ T4240] device hsr_slave_0 entered promiscuous mode [ 73.082779][ T4240] device hsr_slave_1 entered promiscuous mode [ 73.220694][ T4240] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 73.234393][ T4240] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 73.245717][ T4240] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 73.257151][ T4240] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 73.340010][ T4240] 8021q: adding VLAN 0 to HW filter on device bond0 [ 73.356738][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 73.368447][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 73.381575][ T4240] 8021q: adding VLAN 0 to HW filter on device team0 [ 73.394770][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 73.404351][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 73.413507][ T155] bridge0: port 1(bridge_slave_0) entered blocking state [ 73.420830][ T155] bridge0: port 1(bridge_slave_0) entered forwarding state [ 73.444635][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 73.453552][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 73.462802][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 73.473222][ T155] bridge0: port 2(bridge_slave_1) entered blocking state [ 73.480309][ T155] bridge0: port 2(bridge_slave_1) entered forwarding state [ 73.490134][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 73.500104][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 73.509297][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 73.518899][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 73.542572][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 73.551356][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 73.560446][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 73.572984][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 73.586615][ T4240] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 73.598498][ T4240] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 73.608462][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 73.731851][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 73.739489][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 73.755680][ T4240] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 73.777184][ T1436] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 73.806957][ T1436] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 73.817246][ T1436] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 73.826310][ T1436] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 73.839686][ T4240] device veth0_vlan entered promiscuous mode [ 73.853776][ T4240] device veth1_vlan entered promiscuous mode [ 73.877134][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 73.885621][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 73.895523][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 73.907445][ T4240] device veth0_macvtap entered promiscuous mode [ 73.919502][ T4240] device veth1_macvtap entered promiscuous mode [ 73.935805][ T4240] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 73.944640][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 73.954268][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 73.968413][ T4240] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 73.976556][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 73.985516][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 73.997621][ T4240] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 74.008444][ T4240] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 74.017779][ T4240] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 74.028020][ T4240] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 74.190247][ T4240] syz-executor (4240) used greatest stack depth: 21072 bytes left 2026/05/03 18:45:29 executed programs: 0 [ 76.210882][ T4298] chnl_net:caif_netlink_parms(): no params data found [ 76.276117][ T4298] bridge0: port 1(bridge_slave_0) entered blocking state [ 76.283477][ T4298] bridge0: port 1(bridge_slave_0) entered disabled state [ 76.291726][ T4298] device bridge_slave_0 entered promiscuous mode [ 76.300387][ T4298] bridge0: port 2(bridge_slave_1) entered blocking state [ 76.307959][ T4298] bridge0: port 2(bridge_slave_1) entered disabled state [ 76.316242][ T4298] device bridge_slave_1 entered promiscuous mode [ 76.341455][ T4298] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 76.353182][ T4298] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 76.379675][ T4298] team0: Port device team_slave_0 added [ 76.387525][ T4298] team0: Port device team_slave_1 added [ 76.406762][ T4298] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 76.413922][ T4298] 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. [ 76.440386][ T4298] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 76.453566][ T4298] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 76.460542][ T4298] 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. [ 76.486619][ T4298] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 76.524507][ T4298] device hsr_slave_0 entered promiscuous mode [ 76.533415][ T4298] device hsr_slave_1 entered promiscuous mode [ 76.540314][ T4298] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 76.548929][ T4298] Cannot create hsr debugfs directory [ 76.634620][ T4298] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 78.101999][ T4258] Bluetooth: hci0: command 0x0409 tx timeout [ 79.478790][ T4298] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 79.548131][ T4298] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 79.618913][ T4298] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 79.717769][ T4298] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 79.750349][ T4298] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 79.759981][ T4298] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 79.769823][ T4298] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 79.846006][ T4298] 8021q: adding VLAN 0 to HW filter on device bond0 [ 79.883086][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 79.892050][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 79.902799][ T4298] 8021q: adding VLAN 0 to HW filter on device team0 [ 79.913524][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 79.923321][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 79.932210][ T155] bridge0: port 1(bridge_slave_0) entered blocking state [ 79.939295][ T155] bridge0: port 1(bridge_slave_0) entered forwarding state [ 79.947842][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 79.963073][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 79.972425][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 79.980855][ T155] bridge0: port 2(bridge_slave_1) entered blocking state [ 79.987995][ T155] bridge0: port 2(bridge_slave_1) entered forwarding state [ 79.996185][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 80.013028][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 80.028501][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 80.037780][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 80.054726][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 80.062867][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 80.072069][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 80.080597][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 80.089257][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 80.098482][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 80.107849][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 80.136621][ T4298] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 80.181403][ T4319] Bluetooth: hci0: command 0x041b tx timeout [ 80.273404][ T1436] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 80.280894][ T1436] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 80.294892][ T4298] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 80.331268][ T1436] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 80.339909][ T1436] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 80.360603][ T1436] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 80.368973][ T1436] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 80.379494][ T1436] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 80.388482][ T1436] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 80.399018][ T4298] device veth0_vlan entered promiscuous mode [ 80.428083][ T4298] device veth1_vlan entered promiscuous mode [ 80.449093][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 80.457805][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 80.466019][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 80.475216][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 80.486488][ T4298] device veth0_macvtap entered promiscuous mode [ 80.502069][ T154] device hsr_slave_0 left promiscuous mode [ 80.508509][ T154] device hsr_slave_1 left promiscuous mode [ 80.515655][ T154] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 80.523645][ T154] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 80.532549][ T154] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 80.539953][ T154] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 80.547789][ T154] device bridge_slave_1 left promiscuous mode [ 80.554738][ T154] bridge0: port 2(bridge_slave_1) entered disabled state [ 80.568568][ T154] device bridge_slave_0 left promiscuous mode [ 80.574838][ T154] bridge0: port 1(bridge_slave_0) entered disabled state [ 80.595458][ T154] device veth1_macvtap left promiscuous mode [ 80.601825][ T154] device veth0_macvtap left promiscuous mode [ 80.607888][ T154] device veth1_vlan left promiscuous mode [ 80.613968][ T154] device veth0_vlan left promiscuous mode [ 80.786333][ T154] team0 (unregistering): Port device team_slave_1 removed [ 80.802300][ T154] team0 (unregistering): Port device team_slave_0 removed [ 80.818068][ T154] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 80.832206][ T154] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 80.887174][ T154] bond0 (unregistering): Released all slaves [ 80.935421][ T4298] device veth1_macvtap entered promiscuous mode [ 80.947222][ T1436] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 80.955386][ T1436] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 80.972587][ T4298] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 80.979886][ T1436] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 80.989817][ T1436] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 81.002704][ T4298] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 81.011578][ T1436] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 81.020683][ T1436] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 81.035163][ T4298] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 81.044337][ T4298] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 81.053455][ T4298] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 81.063155][ T4298] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 81.125555][ T1436] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 81.139114][ T1436] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 81.149538][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 81.181539][ T144] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 81.189957][ T144] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 81.197893][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 81.331890][ T4326] [ 81.334292][ T4326] ====================================================== [ 81.341325][ T4326] WARNING: possible circular locking dependency detected [ 81.348380][ T4326] syzkaller #0 Not tainted [ 81.352818][ T4326] ------------------------------------------------------ [ 81.359857][ T4326] syz.0.17/4326 is trying to acquire lock: [ 81.365684][ T4326] ffff888073024c28 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}, at: __flush_work+0xfa/0x210 [ 81.376786][ T4326] [ 81.376786][ T4326] but task is already holding lock: [ 81.384176][ T4326] ffffffff8d6c5da8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x18b/0x560 [ 81.393876][ T4326] [ 81.393876][ T4326] which lock already depends on the new lock. [ 81.393876][ T4326] [ 81.404298][ T4326] [ 81.404298][ T4326] the existing dependency chain (in reverse order) is: [ 81.413433][ T4326] [ 81.413433][ T4326] -> #4 (rfkill_global_mutex){+.+.}-{3:3}: [ 81.421466][ T4326] __mutex_lock_common+0x1e3/0x2400 [ 81.427235][ T4326] mutex_lock_nested+0x17/0x20 [ 81.432574][ T4326] rfkill_register+0x33/0x980 [ 81.437821][ T4326] hci_register_dev+0x452/0x970 [ 81.443254][ T4326] vhci_create_device+0x32c/0x5c0 [ 81.448850][ T4326] vhci_write+0x391/0x450 [ 81.453752][ T4326] vfs_write+0x745/0xd60 [ 81.458546][ T4326] ksys_write+0x152/0x260 [ 81.463422][ T4326] do_syscall_64+0x4c/0xa0 [ 81.468404][ T4326] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 81.474855][ T4326] [ 81.474855][ T4326] -> #3 (&data->open_mutex){+.+.}-{3:3}: [ 81.482700][ T4326] __mutex_lock_common+0x1e3/0x2400 [ 81.488459][ T4326] mutex_lock_nested+0x17/0x20 [ 81.493775][ T4326] vhci_send_frame+0x88/0x100 [ 81.499008][ T4326] hci_send_frame+0x1a9/0x2e0 [ 81.504238][ T4326] hci_tx_work+0x9f9/0x1710 [ 81.509296][ T4326] process_one_work+0x85f/0x1010 [ 81.514781][ T4326] worker_thread+0xaa6/0x1290 [ 81.520028][ T4326] kthread+0x436/0x520 [ 81.524642][ T4326] ret_from_fork+0x1f/0x30 [ 81.529607][ T4326] [ 81.529607][ T4326] -> #2 ((work_completion)(&hdev->tx_work)){+.+.}-{0:0}: [ 81.538846][ T4326] __flush_work+0x116/0x210 [ 81.543897][ T4326] hci_dev_do_close+0x1e7/0x1030 [ 81.549383][ T4326] hci_unregister_dev+0x2d7/0x580 [ 81.554964][ T4326] vhci_release+0x73/0xc0 [ 81.559853][ T4326] __fput+0x234/0x930 [ 81.564378][ T4326] task_work_run+0x125/0x1a0 [ 81.569520][ T4326] do_exit+0x626/0x20c0 [ 81.574226][ T4326] do_group_exit+0x12e/0x300 [ 81.579363][ T4326] get_signal+0x6ca/0x12c0 [ 81.584332][ T4326] arch_do_signal_or_restart+0xe7/0x12c0 [ 81.590520][ T4326] exit_to_user_mode_loop+0x9e/0x130 [ 81.596356][ T4326] exit_to_user_mode_prepare+0xee/0x180 [ 81.602460][ T4326] syscall_exit_to_user_mode+0x16/0x40 [ 81.608467][ T4326] do_syscall_64+0x58/0xa0 [ 81.613428][ T4326] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 81.619874][ T4326] [ 81.619874][ T4326] -> #1 (&hdev->req_lock){+.+.}-{3:3}: [ 81.627547][ T4326] __mutex_lock_common+0x1e3/0x2400 [ 81.633307][ T4326] mutex_lock_nested+0x17/0x20 [ 81.638629][ T4326] bg_scan_update+0x44/0x3b0 [ 81.643772][ T4326] process_one_work+0x85f/0x1010 [ 81.649260][ T4326] worker_thread+0xaa6/0x1290 [ 81.654485][ T4326] kthread+0x436/0x520 [ 81.659101][ T4326] ret_from_fork+0x1f/0x30 [ 81.664078][ T4326] [ 81.664078][ T4326] -> #0 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}: [ 81.673924][ T4326] __lock_acquire+0x2c42/0x7d10 [ 81.679334][ T4326] lock_acquire+0x19e/0x400 [ 81.684389][ T4326] __flush_work+0x116/0x210 [ 81.689449][ T4326] __cancel_work_timer+0x3f4/0x560 [ 81.695114][ T4326] hci_request_cancel_all+0xcc/0x300 [ 81.700947][ T4326] hci_dev_do_close+0x4e/0x1030 [ 81.706347][ T4326] hci_rfkill_set_block+0x10a/0x190 [ 81.712096][ T4326] rfkill_set_block+0x1c9/0x3d0 [ 81.717505][ T4326] rfkill_fop_write+0x452/0x560 [ 81.722912][ T4326] vfs_write+0x30b/0xd60 [ 81.727708][ T4326] ksys_write+0x152/0x260 [ 81.732583][ T4326] do_syscall_64+0x4c/0xa0 [ 81.737549][ T4326] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 81.743989][ T4326] [ 81.743989][ T4326] other info that might help us debug this: [ 81.743989][ T4326] [ 81.754238][ T4326] Chain exists of: [ 81.754238][ T4326] (work_completion)(&hdev->bg_scan_update) --> &data->open_mutex --> rfkill_global_mutex [ 81.754238][ T4326] [ 81.769992][ T4326] Possible unsafe locking scenario: [ 81.769992][ T4326] [ 81.777467][ T4326] CPU0 CPU1 [ 81.782846][ T4326] ---- ---- [ 81.788223][ T4326] lock(rfkill_global_mutex); [ 81.793023][ T4326] lock(&data->open_mutex); [ 81.800156][ T4326] lock(rfkill_global_mutex); [ 81.807464][ T4326] lock((work_completion)(&hdev->bg_scan_update)); [ 81.814074][ T4326] [ 81.814074][ T4326] *** DEADLOCK *** [ 81.814074][ T4326] [ 81.822233][ T4326] 1 lock held by syz.0.17/4326: [ 81.827096][ T4326] #0: ffffffff8d6c5da8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x18b/0x560 [ 81.837224][ T4326] [ 81.837224][ T4326] stack backtrace: [ 81.843171][ T4326] CPU: 1 PID: 4326 Comm: syz.0.17 Not tainted syzkaller #0 [ 81.850399][ T4326] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 81.860482][ T4326] Call Trace: [ 81.863789][ T4326] [ 81.866743][ T4326] dump_stack_lvl+0x188/0x250 [ 81.871447][ T4326] ? load_image+0x400/0x400 [ 81.875978][ T4326] ? show_regs_print_info+0x20/0x20 [ 81.881204][ T4326] ? print_circular_bug+0x12b/0x1a0 [ 81.886435][ T4326] check_noncircular+0x296/0x330 [ 81.891404][ T4326] ? look_up_lock_class+0x71/0x110 [ 81.896545][ T4326] ? add_chain_block+0x940/0x940 [ 81.901512][ T4326] ? lockdep_lock+0xf1/0x1f0 [ 81.906131][ T4326] ? __lock_acquire+0x12e8/0x7d10 [ 81.911182][ T4326] ? mark_lock+0x94/0x320 [ 81.915537][ T4326] ? _find_first_zero_bit+0xce/0xf0 [ 81.920770][ T4326] __lock_acquire+0x2c42/0x7d10 [ 81.925664][ T4326] ? verify_lock_unused+0x140/0x140 [ 81.930889][ T4326] ? verify_lock_unused+0x140/0x140 [ 81.936124][ T4326] ? mark_lock+0x94/0x320 [ 81.940508][ T4326] lock_acquire+0x19e/0x400 [ 81.945034][ T4326] ? __flush_work+0xfa/0x210 [ 81.949655][ T4326] ? __lock_acquire+0x7d10/0x7d10 [ 81.954705][ T4326] ? read_lock_is_recursive+0x10/0x10 [ 81.960111][ T4326] ? start_flush_work+0x776/0x820 [ 81.965166][ T4326] __flush_work+0x116/0x210 [ 81.969697][ T4326] ? __flush_work+0xfa/0x210 [ 81.974320][ T4326] ? flush_work+0x20/0x20 [ 81.978677][ T4326] ? try_to_grab_pending+0xfa/0x7f0 [ 81.983910][ T4326] ? mark_lock+0x94/0x320 [ 81.988270][ T4326] ? lockdep_hardirqs_on_prepare+0x409/0x770 [ 81.994305][ T4326] ? lock_chain_count+0x20/0x20 [ 81.999190][ T4326] ? mark_lock+0x94/0x320 [ 82.003542][ T4326] ? __cancel_work_timer+0x36a/0x560 [ 82.008854][ T4326] __cancel_work_timer+0x3f4/0x560 [ 82.013992][ T4326] ? cancel_work_sync+0x20/0x20 [ 82.018867][ T4326] ? __cancel_work+0x1f9/0x2e0 [ 82.023661][ T4326] ? lockdep_hardirqs_on+0x94/0x140 [ 82.028926][ T4326] ? __cancel_work+0x27b/0x2e0 [ 82.033719][ T4326] ? cancel_work+0x20/0x20 [ 82.038166][ T4326] ? lock_chain_count+0x20/0x20 [ 82.043046][ T4326] hci_request_cancel_all+0xcc/0x300 [ 82.048369][ T4326] hci_dev_do_close+0x4e/0x1030 [ 82.053252][ T4326] ? _raw_spin_unlock_irqrestore+0xc1/0x120 [ 82.059173][ T4326] ? _raw_spin_unlock+0x40/0x40 [ 82.064051][ T4326] hci_rfkill_set_block+0x10a/0x190 [ 82.069290][ T4326] ? rcu_lock_release+0x20/0x20 [ 82.074173][ T4326] rfkill_set_block+0x1c9/0x3d0 [ 82.079102][ T4326] rfkill_fop_write+0x452/0x560 [ 82.083984][ T4326] ? rfkill_fop_read+0x520/0x520 [ 82.088958][ T4326] ? common_file_perm+0x140/0x1c0 [ 82.094015][ T4326] ? fsnotify_perm+0x5d/0x560 [ 82.098756][ T4326] ? security_file_permission+0x75/0xa0 [ 82.104331][ T4326] ? rfkill_fop_read+0x520/0x520 [ 82.109298][ T4326] vfs_write+0x30b/0xd60 [ 82.113568][ T4326] ? file_end_write+0x250/0x250 [ 82.118444][ T4326] ? __context_tracking_exit+0x4c/0x80 [ 82.123929][ T4326] ? __lock_acquire+0x7d10/0x7d10 [ 82.128979][ T4326] ? __fdget_pos+0x1e2/0x370 [ 82.133621][ T4326] ksys_write+0x152/0x260 [ 82.137977][ T4326] ? __ia32_sys_read+0x80/0x80 [ 82.142773][ T4326] ? lockdep_hardirqs_on+0x94/0x140 [ 82.148007][ T4326] do_syscall_64+0x4c/0xa0 [ 82.152449][ T4326] ? clear_bhb_loop+0x30/0x80 [ 82.157153][ T4326] ? clear_bhb_loop+0x30/0x80 [ 82.161866][ T4326] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 82.167800][ T4326] RIP: 0033:0x7fa90d969dd9 [ 82.172271][ T4326] 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 [ 82.191899][ T4326] RSP: 002b:00007ffd7645d6b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 82.200333][ T4326] RAX: ffffffffffffffda RBX: 00007fa90dbe2fa0 RCX: 00007fa90d969dd9 [ 82.208331][ T4326] RDX: 0000000000000008 RSI: 0000200000000100 RDI: 0000000000000003 [ 82.216334][ T4326] RBP: 00007fa90d9ffd69 R08: 0000000000000000 R09: 0000000000000000 [ 82.224348][ T4326] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 82.232345][ T4326] R13: 00007fa90dbe2fac R14: 00007fa90dbe2fa0 R15: 00007fa90dbe2fa0 [ 82.240351][ T4326] [ 82.274838][ T4315] Bluetooth: hci0: command 0x040f tx timeout