Warning: Permanently added '10.128.1.6' (ED25519) to the list of known hosts. 2026/04/07 07:49:11 parsed 1 programs [ 70.249611][ T4188] cgroup: Unknown subsys name 'net' [ 70.362006][ T4188] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size = 127995904 bytes [ 71.284172][ T1423] ieee802154 phy0 wpan0: encryption failed: -22 [ 71.290676][ T1423] ieee802154 phy1 wpan1: encryption failed: -22 [ 71.900001][ T4188] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k FS [ 74.709799][ T155] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 74.721889][ T155] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 74.735228][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 74.761845][ T154] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 74.769803][ T154] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 74.778155][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 75.674192][ T4259] chnl_net:caif_netlink_parms(): no params data found [ 75.770426][ T4259] bridge0: port 1(bridge_slave_0) entered blocking state [ 75.778720][ T4259] bridge0: port 1(bridge_slave_0) entered disabled state [ 75.787344][ T4259] device bridge_slave_0 entered promiscuous mode [ 75.797493][ T4259] bridge0: port 2(bridge_slave_1) entered blocking state [ 75.804748][ T4259] bridge0: port 2(bridge_slave_1) entered disabled state [ 75.814268][ T4259] device bridge_slave_1 entered promiscuous mode [ 75.842712][ T4259] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 75.856913][ T4259] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 75.890693][ T4259] team0: Port device team_slave_0 added [ 75.902585][ T4259] team0: Port device team_slave_1 added [ 75.920070][ T4259] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 75.927202][ T4259] 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. [ 75.953151][ T4259] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 75.966469][ T4259] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 75.973682][ T4259] 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. [ 75.999891][ T4259] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 76.031726][ T4259] device hsr_slave_0 entered promiscuous mode [ 76.038451][ T4259] device hsr_slave_1 entered promiscuous mode [ 76.136524][ T4259] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 76.147169][ T4259] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 76.156447][ T4259] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 76.165653][ T4259] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 76.188335][ T4259] bridge0: port 2(bridge_slave_1) entered blocking state [ 76.195636][ T4259] bridge0: port 2(bridge_slave_1) entered forwarding state [ 76.203583][ T4259] bridge0: port 1(bridge_slave_0) entered blocking state [ 76.210658][ T4259] bridge0: port 1(bridge_slave_0) entered forwarding state [ 76.258232][ T4259] 8021q: adding VLAN 0 to HW filter on device bond0 [ 76.270736][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 76.281214][ T144] bridge0: port 1(bridge_slave_0) entered disabled state [ 76.289568][ T144] bridge0: port 2(bridge_slave_1) entered disabled state [ 76.299867][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 76.314759][ T4259] 8021q: adding VLAN 0 to HW filter on device team0 [ 76.327444][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 76.336139][ T144] bridge0: port 1(bridge_slave_0) entered blocking state [ 76.343336][ T144] bridge0: port 1(bridge_slave_0) entered forwarding state [ 76.364120][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 76.373047][ T144] bridge0: port 2(bridge_slave_1) entered blocking state [ 76.380157][ T144] bridge0: port 2(bridge_slave_1) entered forwarding state [ 76.389567][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 76.398908][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 76.412110][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 76.452585][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 76.465288][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 76.477681][ T4259] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 76.643061][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 76.650580][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 76.665349][ T4259] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 76.702697][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 76.712317][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 76.730198][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 76.739697][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 76.750282][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 76.758466][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 76.770589][ T4259] device veth0_vlan entered promiscuous mode [ 76.811855][ T4259] device veth1_vlan entered promiscuous mode [ 76.834777][ T1244] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 76.844185][ T1244] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 76.853669][ T1244] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 76.863040][ T1244] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 76.873667][ T4259] device veth0_macvtap entered promiscuous mode [ 76.884620][ T4259] device veth1_macvtap entered promiscuous mode [ 76.926280][ T4259] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 76.933858][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 76.942186][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 76.950865][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 76.960729][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 76.973056][ T4259] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 76.980433][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 76.992945][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 77.025808][ T4259] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 77.035343][ T4259] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 77.044980][ T4259] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 77.053916][ T4259] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 77.198285][ T4259] syz-executor (4259) used greatest stack depth: 19952 bytes left 2026/04/07 07:49:21 executed programs: 0 [ 77.661314][ T4298] chnl_net:caif_netlink_parms(): no params data found [ 77.725006][ T4298] bridge0: port 1(bridge_slave_0) entered blocking state [ 77.732276][ T4298] bridge0: port 1(bridge_slave_0) entered disabled state [ 77.740445][ T4298] device bridge_slave_0 entered promiscuous mode [ 77.749647][ T4298] bridge0: port 2(bridge_slave_1) entered blocking state [ 77.757132][ T4298] bridge0: port 2(bridge_slave_1) entered disabled state [ 77.767220][ T4298] device bridge_slave_1 entered promiscuous mode [ 77.794147][ T4298] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 77.805971][ T4298] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 77.836854][ T4298] team0: Port device team_slave_0 added [ 77.858010][ T4298] team0: Port device team_slave_1 added [ 77.882250][ T4298] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 77.889251][ 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. [ 77.915619][ T4298] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 77.928342][ T4298] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 77.935388][ 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. [ 77.961585][ T4298] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 78.005013][ T4298] device hsr_slave_0 entered promiscuous mode [ 78.014490][ T4298] device hsr_slave_1 entered promiscuous mode [ 78.021583][ T4298] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 78.029495][ T4298] Cannot create hsr debugfs directory [ 78.138437][ T4298] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 79.602148][ T4254] Bluetooth: hci0: command 0x0409 tx timeout [ 80.561897][ T4298] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 81.681295][ T4286] Bluetooth: hci0: command 0x041b tx timeout [ 81.987362][ T4298] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 82.036040][ T4298] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 82.240106][ T4298] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 82.250000][ T4298] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 82.266214][ T4298] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 82.275495][ T4298] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 82.307475][ T9] device hsr_slave_0 left promiscuous mode [ 82.314051][ T9] device hsr_slave_1 left promiscuous mode [ 82.320447][ T9] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 82.329775][ T9] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 82.339561][ T9] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 82.347016][ T9] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 82.355124][ T9] device bridge_slave_1 left promiscuous mode [ 82.362158][ T9] bridge0: port 2(bridge_slave_1) entered disabled state [ 82.376775][ T9] device bridge_slave_0 left promiscuous mode [ 82.382985][ T9] bridge0: port 1(bridge_slave_0) entered disabled state [ 82.402032][ T9] device veth1_macvtap left promiscuous mode [ 82.408278][ T9] device veth0_macvtap left promiscuous mode [ 82.414584][ T9] device veth1_vlan left promiscuous mode [ 82.420484][ T9] device veth0_vlan left promiscuous mode [ 82.582535][ T9] team0 (unregistering): Port device team_slave_1 removed [ 82.596585][ T9] team0 (unregistering): Port device team_slave_0 removed [ 82.609702][ T9] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 82.627080][ T9] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 82.683139][ T9] bond0 (unregistering): Released all slaves [ 82.751973][ T4298] 8021q: adding VLAN 0 to HW filter on device bond0 [ 82.768938][ T1244] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 82.777853][ T1244] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 82.790024][ T4298] 8021q: adding VLAN 0 to HW filter on device team0 [ 82.807188][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 82.816480][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 82.826121][ T155] bridge0: port 1(bridge_slave_0) entered blocking state [ 82.833273][ T155] bridge0: port 1(bridge_slave_0) entered forwarding state [ 82.841469][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 82.850105][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 82.860636][ T155] bridge0: port 2(bridge_slave_1) entered blocking state [ 82.868059][ T155] bridge0: port 2(bridge_slave_1) entered forwarding state [ 82.877398][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 82.887352][ T1244] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 82.901383][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 82.924033][ T1244] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 82.933836][ T1244] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 82.943345][ T1244] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 82.954123][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 82.963293][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 82.974900][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 82.983753][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 82.995911][ T1244] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 83.004688][ T1244] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 83.020663][ T4298] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 83.119518][ T1244] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 83.127822][ T1244] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 83.140604][ T4298] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 83.162976][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 83.172723][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 83.192180][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 83.200844][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 83.213726][ T4298] device veth0_vlan entered promiscuous mode [ 83.223054][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 83.231969][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 83.245289][ T4298] device veth1_vlan entered promiscuous mode [ 83.268646][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 83.277825][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 83.287075][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 83.296796][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 83.307703][ T4298] device veth0_macvtap entered promiscuous mode [ 83.319561][ T4298] device veth1_macvtap entered promiscuous mode [ 83.337472][ T4298] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 83.346220][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 83.355249][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 83.363831][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 83.373099][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 83.385621][ T4298] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 83.393485][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 83.402754][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 83.414708][ T4298] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 83.424492][ T4298] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 83.434299][ T4298] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 83.445899][ T4298] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 83.504143][ T1244] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 83.518638][ T1244] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 83.537486][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 83.550943][ T154] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 83.559652][ T154] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 83.567688][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 83.676279][ T4310] [ 83.678765][ T4310] ====================================================== [ 83.685798][ T4310] WARNING: possible circular locking dependency detected [ 83.692884][ T4310] syzkaller #0 Not tainted [ 83.697317][ T4310] ------------------------------------------------------ [ 83.704351][ T4310] syz.0.17/4310 is trying to acquire lock: [ 83.710182][ T4310] ffff888024900c28 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}, at: __flush_work+0xfa/0x210 [ 83.721270][ T4310] [ 83.721270][ T4310] but task is already holding lock: [ 83.728654][ T4310] ffffffff8d6c51a8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x18b/0x560 [ 83.738436][ T4310] [ 83.738436][ T4310] which lock already depends on the new lock. [ 83.738436][ T4310] [ 83.748857][ T4310] [ 83.748857][ T4310] the existing dependency chain (in reverse order) is: [ 83.757886][ T4310] [ 83.757886][ T4310] -> #4 (rfkill_global_mutex){+.+.}-{3:3}: [ 83.762406][ T4282] Bluetooth: hci0: command 0x040f tx timeout [ 83.765903][ T4310] __mutex_lock_common+0x1e3/0x2400 [ 83.777725][ T4310] mutex_lock_nested+0x17/0x20 [ 83.783037][ T4310] rfkill_register+0x33/0x8a0 [ 83.788269][ T4310] hci_register_dev+0x452/0x970 [ 83.793669][ T4310] vhci_create_device+0x32c/0x5c0 [ 83.799245][ T4310] vhci_write+0x391/0x450 [ 83.804120][ T4310] vfs_write+0x745/0xd60 [ 83.808915][ T4310] ksys_write+0x152/0x260 [ 83.813783][ T4310] do_syscall_64+0x4c/0xa0 [ 83.818739][ T4310] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 83.825172][ T4310] [ 83.825172][ T4310] -> #3 (&data->open_mutex){+.+.}-{3:3}: [ 83.833102][ T4310] __mutex_lock_common+0x1e3/0x2400 [ 83.838868][ T4310] mutex_lock_nested+0x17/0x20 [ 83.844284][ T4310] vhci_send_frame+0x88/0x100 [ 83.849506][ T4310] hci_send_frame+0x1a9/0x2e0 [ 83.854730][ T4310] hci_tx_work+0x9f9/0x1710 [ 83.859786][ T4310] process_one_work+0x85f/0x1010 [ 83.865279][ T4310] worker_thread+0xaa6/0x1290 [ 83.870502][ T4310] kthread+0x436/0x520 [ 83.875201][ T4310] ret_from_fork+0x1f/0x30 [ 83.880165][ T4310] [ 83.880165][ T4310] -> #2 ((work_completion)(&hdev->tx_work)){+.+.}-{0:0}: [ 83.889409][ T4310] __flush_work+0x116/0x210 [ 83.894457][ T4310] hci_dev_do_close+0x1e7/0x1030 [ 83.899937][ T4310] hci_unregister_dev+0x2d7/0x580 [ 83.905499][ T4310] vhci_release+0x73/0xc0 [ 83.910370][ T4310] __fput+0x234/0x930 [ 83.914895][ T4310] task_work_run+0x125/0x1a0 [ 83.920032][ T4310] do_exit+0x626/0x20c0 [ 83.924759][ T4310] do_group_exit+0x12e/0x300 [ 83.929890][ T4310] get_signal+0x6ca/0x12c0 [ 83.934854][ T4310] arch_do_signal_or_restart+0xe7/0x12c0 [ 83.941040][ T4310] exit_to_user_mode_loop+0x9e/0x130 [ 83.946872][ T4310] exit_to_user_mode_prepare+0xee/0x180 [ 83.952955][ T4310] syscall_exit_to_user_mode+0x16/0x40 [ 83.958961][ T4310] do_syscall_64+0x58/0xa0 [ 83.963929][ T4310] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 83.970365][ T4310] [ 83.970365][ T4310] -> #1 (&hdev->req_lock){+.+.}-{3:3}: [ 83.978032][ T4310] __mutex_lock_common+0x1e3/0x2400 [ 83.983780][ T4310] mutex_lock_nested+0x17/0x20 [ 83.989174][ T4310] bg_scan_update+0x44/0x3b0 [ 83.994311][ T4310] process_one_work+0x85f/0x1010 [ 83.999793][ T4310] worker_thread+0xaa6/0x1290 [ 84.005029][ T4310] kthread+0x436/0x520 [ 84.009647][ T4310] ret_from_fork+0x1f/0x30 [ 84.014708][ T4310] [ 84.014708][ T4310] -> #0 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}: [ 84.024808][ T4310] __lock_acquire+0x2c42/0x7d10 [ 84.030216][ T4310] lock_acquire+0x19e/0x400 [ 84.035270][ T4310] __flush_work+0x116/0x210 [ 84.040322][ T4310] __cancel_work_timer+0x3f4/0x560 [ 84.045978][ T4310] hci_request_cancel_all+0xcc/0x300 [ 84.051814][ T4310] hci_dev_do_close+0x4e/0x1030 [ 84.057218][ T4310] hci_rfkill_set_block+0x10a/0x190 [ 84.062965][ T4310] rfkill_set_block+0x1c6/0x420 [ 84.068374][ T4310] rfkill_fop_write+0x452/0x560 [ 84.073778][ T4310] vfs_write+0x30b/0xd60 [ 84.078566][ T4310] ksys_write+0x152/0x260 [ 84.083524][ T4310] do_syscall_64+0x4c/0xa0 [ 84.088504][ T4310] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 84.094985][ T4310] [ 84.094985][ T4310] other info that might help us debug this: [ 84.094985][ T4310] [ 84.105331][ T4310] Chain exists of: [ 84.105331][ T4310] (work_completion)(&hdev->bg_scan_update) --> &data->open_mutex --> rfkill_global_mutex [ 84.105331][ T4310] [ 84.121085][ T4310] Possible unsafe locking scenario: [ 84.121085][ T4310] [ 84.128545][ T4310] CPU0 CPU1 [ 84.133923][ T4310] ---- ---- [ 84.139303][ T4310] lock(rfkill_global_mutex); [ 84.144097][ T4310] lock(&data->open_mutex); [ 84.151225][ T4310] lock(rfkill_global_mutex); [ 84.158525][ T4310] lock((work_completion)(&hdev->bg_scan_update)); [ 84.165227][ T4310] [ 84.165227][ T4310] *** DEADLOCK *** [ 84.165227][ T4310] [ 84.173392][ T4310] 1 lock held by syz.0.17/4310: [ 84.178267][ T4310] #0: ffffffff8d6c51a8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x18b/0x560 [ 84.188399][ T4310] [ 84.188399][ T4310] stack backtrace: [ 84.194327][ T4310] CPU: 1 PID: 4310 Comm: syz.0.17 Not tainted syzkaller #0 [ 84.201557][ T4310] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 84.211730][ T4310] Call Trace: [ 84.215051][ T4310] [ 84.218008][ T4310] dump_stack_lvl+0x188/0x250 [ 84.222725][ T4310] ? load_image+0x400/0x400 [ 84.227249][ T4310] ? show_regs_print_info+0x20/0x20 [ 84.232482][ T4310] ? print_circular_bug+0x12b/0x1a0 [ 84.237717][ T4310] check_noncircular+0x296/0x330 [ 84.242684][ T4310] ? look_up_lock_class+0x71/0x110 [ 84.247927][ T4310] ? add_chain_block+0x940/0x940 [ 84.252890][ T4310] ? lockdep_lock+0xf1/0x1f0 [ 84.257501][ T4310] ? __lock_acquire+0x12e8/0x7d10 [ 84.262556][ T4310] ? mark_lock+0x94/0x320 [ 84.266915][ T4310] __lock_acquire+0x2c42/0x7d10 [ 84.271803][ T4310] ? verify_lock_unused+0x140/0x140 [ 84.277056][ T4310] ? verify_lock_unused+0x140/0x140 [ 84.282293][ T4310] ? mark_lock+0x94/0x320 [ 84.286673][ T4310] lock_acquire+0x19e/0x400 [ 84.291204][ T4310] ? __flush_work+0xfa/0x210 [ 84.295822][ T4310] ? __lock_acquire+0x7d10/0x7d10 [ 84.300876][ T4310] ? read_lock_is_recursive+0x10/0x10 [ 84.306279][ T4310] ? start_flush_work+0x776/0x820 [ 84.311330][ T4310] __flush_work+0x116/0x210 [ 84.315867][ T4310] ? __flush_work+0xfa/0x210 [ 84.320487][ T4310] ? flush_work+0x20/0x20 [ 84.324841][ T4310] ? try_to_grab_pending+0xfa/0x7f0 [ 84.330065][ T4310] ? mark_lock+0x94/0x320 [ 84.334422][ T4310] ? lockdep_hardirqs_on_prepare+0x409/0x770 [ 84.340437][ T4310] ? lock_chain_count+0x20/0x20 [ 84.345311][ T4310] ? mark_lock+0x94/0x320 [ 84.349668][ T4310] ? __cancel_work_timer+0x36a/0x560 [ 84.355022][ T4310] __cancel_work_timer+0x3f4/0x560 [ 84.360165][ T4310] ? cancel_work_sync+0x20/0x20 [ 84.365052][ T4310] ? __cancel_work+0x1f9/0x2e0 [ 84.369843][ T4310] ? lockdep_hardirqs_on+0x94/0x140 [ 84.375187][ T4310] ? __cancel_work+0x27b/0x2e0 [ 84.379991][ T4310] ? cancel_work+0x20/0x20 [ 84.384448][ T4310] ? lock_chain_count+0x20/0x20 [ 84.389328][ T4310] hci_request_cancel_all+0xcc/0x300 [ 84.394640][ T4310] hci_dev_do_close+0x4e/0x1030 [ 84.399518][ T4310] ? _raw_spin_unlock_irqrestore+0xc1/0x120 [ 84.405450][ T4310] ? _raw_spin_unlock+0x40/0x40 [ 84.410332][ T4310] hci_rfkill_set_block+0x10a/0x190 [ 84.415741][ T4310] ? rcu_lock_release+0x20/0x20 [ 84.420646][ T4310] rfkill_set_block+0x1c6/0x420 [ 84.425530][ T4310] rfkill_fop_write+0x452/0x560 [ 84.430410][ T4310] ? rfkill_fop_read+0x4d0/0x4d0 [ 84.435374][ T4310] ? common_file_perm+0x110/0x1c0 [ 84.440424][ T4310] ? fsnotify_perm+0x5d/0x560 [ 84.445126][ T4310] ? security_file_permission+0x75/0xa0 [ 84.450700][ T4310] ? rfkill_fop_read+0x4d0/0x4d0 [ 84.455668][ T4310] vfs_write+0x30b/0xd60 [ 84.459938][ T4310] ? file_end_write+0x250/0x250 [ 84.464822][ T4310] ? __context_tracking_exit+0x4c/0x80 [ 84.470313][ T4310] ? __lock_acquire+0x7d10/0x7d10 [ 84.475369][ T4310] ? __fdget_pos+0x1e2/0x370 [ 84.479994][ T4310] ksys_write+0x152/0x260 [ 84.484361][ T4310] ? __ia32_sys_read+0x80/0x80 [ 84.489217][ T4310] ? lockdep_hardirqs_on+0x94/0x140 [ 84.494477][ T4310] do_syscall_64+0x4c/0xa0 [ 84.498920][ T4310] ? clear_bhb_loop+0x30/0x80 [ 84.503622][ T4310] ? clear_bhb_loop+0x30/0x80 [ 84.508323][ T4310] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 84.514271][ T4310] RIP: 0033:0x7f9e8c101819 [ 84.518714][ T4310] 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 [ 84.538436][ T4310] RSP: 002b:00007ffd07b03828 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 84.546884][ T4310] RAX: ffffffffffffffda RBX: 00007f9e8c37afa0 RCX: 00007f9e8c101819 [ 84.554886][ T4310] RDX: 0000000000000008 RSI: 0000200000000300 RDI: 0000000000000003 [ 84.562884][ T4310] RBP: 00007f9e8c197c91 R08: 0000000000000000 R09: 0000000000000000 [ 84.570923][ T4310] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 84.578924][ T4310] R13: 00007f9e8c37afac R14: 00007f9e8c37afa0 R15: 00007f9e8c37afa0 [ 84.586943][ T4310]