Warning: Permanently added '10.128.1.131' (ED25519) to the list of known hosts. 2026/08/19 01:23:45 parsed 1 programs 2026/08/19 01:23:45 serving rpc on tcp://33983 [ 69.578442][ T4199] cgroup: Unknown subsys name 'net' [ 69.712625][ T4199] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size = 127995904 bytes [ 71.219880][ T1422] ieee802154 phy0 wpan0: encryption failed: -22 [ 71.226475][ T1422] ieee802154 phy1 wpan1: encryption failed: -22 [ 71.236390][ T4199] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k FS [ 74.525142][ T4255] chnl_net:caif_netlink_parms(): no params data found [ 74.592029][ T4255] bridge0: port 1(bridge_slave_0) entered blocking state [ 74.599860][ T4255] bridge0: port 1(bridge_slave_0) entered disabled state [ 74.608348][ T4255] device bridge_slave_0 entered promiscuous mode [ 74.618162][ T4255] bridge0: port 2(bridge_slave_1) entered blocking state [ 74.625304][ T4255] bridge0: port 2(bridge_slave_1) entered disabled state [ 74.633792][ T4255] device bridge_slave_1 entered promiscuous mode [ 74.659898][ T4255] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 74.671533][ T4255] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 74.700004][ T4255] team0: Port device team_slave_0 added [ 74.708362][ T4255] team0: Port device team_slave_1 added [ 74.730002][ T4255] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 74.737172][ T4255] 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. [ 74.763473][ T4255] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 74.776534][ T4255] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 74.783502][ T4255] 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. [ 74.809858][ T4255] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 74.850660][ T4255] device hsr_slave_0 entered promiscuous mode [ 74.858829][ T4255] device hsr_slave_1 entered promiscuous mode [ 74.980111][ T4255] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 74.992516][ T4255] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 75.003248][ T4255] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 75.013343][ T4255] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 75.106695][ T4255] bridge0: port 2(bridge_slave_1) entered blocking state [ 75.113951][ T4255] bridge0: port 2(bridge_slave_1) entered forwarding state [ 75.122335][ T4255] bridge0: port 1(bridge_slave_0) entered blocking state [ 75.129506][ T4255] bridge0: port 1(bridge_slave_0) entered forwarding state [ 75.208738][ T4255] 8021q: adding VLAN 0 to HW filter on device bond0 [ 75.222427][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 75.232928][ T144] bridge0: port 1(bridge_slave_0) entered disabled state [ 75.241055][ T144] bridge0: port 2(bridge_slave_1) entered disabled state [ 75.254646][ T4255] 8021q: adding VLAN 0 to HW filter on device team0 [ 75.266127][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 75.275249][ T144] bridge0: port 1(bridge_slave_0) entered blocking state [ 75.282454][ T144] bridge0: port 1(bridge_slave_0) entered forwarding state [ 75.299520][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 75.308560][ T144] bridge0: port 2(bridge_slave_1) entered blocking state [ 75.315648][ T144] bridge0: port 2(bridge_slave_1) entered forwarding state [ 75.330229][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 75.340369][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 75.351357][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 75.362850][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 75.375410][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 75.386231][ T4255] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 75.474431][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 75.482044][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 75.494633][ T4255] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 75.533670][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 75.543259][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 75.582082][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 75.591066][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 75.601102][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 75.609456][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 75.620046][ T4255] device veth0_vlan entered promiscuous mode [ 75.653379][ T4255] device veth1_vlan entered promiscuous mode [ 75.673325][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 75.682545][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 75.691158][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 75.700431][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 75.711647][ T4255] device veth0_macvtap entered promiscuous mode [ 75.740320][ T4255] device veth1_macvtap entered promiscuous mode [ 75.757610][ T4255] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 75.765488][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 75.773722][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 75.782288][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 75.791469][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 75.821777][ T4255] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 75.830254][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 75.839252][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 75.851215][ T4255] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 75.860781][ T4255] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 75.870321][ T4255] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 75.880150][ T4255] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 76.693948][ T144] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 76.706672][ T144] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 76.718465][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 76.748348][ T154] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 76.756209][ T154] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 76.764614][ T1279] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2026/08/19 01:23:55 executed programs: 0 [ 77.599780][ T4300] chnl_net:caif_netlink_parms(): no params data found [ 77.664996][ T4300] bridge0: port 1(bridge_slave_0) entered blocking state [ 77.674455][ T4300] bridge0: port 1(bridge_slave_0) entered disabled state [ 77.682879][ T4300] device bridge_slave_0 entered promiscuous mode [ 77.691773][ T4300] bridge0: port 2(bridge_slave_1) entered blocking state [ 77.699360][ T4300] bridge0: port 2(bridge_slave_1) entered disabled state [ 77.710301][ T4300] device bridge_slave_1 entered promiscuous mode [ 77.735454][ T4300] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 77.747106][ T4300] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 77.773316][ T4300] team0: Port device team_slave_0 added [ 77.781410][ T4300] team0: Port device team_slave_1 added [ 77.800730][ T4300] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 77.807812][ T4300] 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. [ 77.834064][ T4300] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 77.846804][ T4300] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 77.853778][ T4300] 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. [ 77.880341][ T4300] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 77.916605][ T4300] device hsr_slave_0 entered promiscuous mode [ 77.923501][ T4300] device hsr_slave_1 entered promiscuous mode [ 77.930273][ T4300] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 77.939966][ T4300] Cannot create hsr debugfs directory [ 78.034791][ T4300] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 79.537180][ T4262] Bluetooth: hci0: command 0x0409 tx timeout [ 80.914048][ T4300] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 80.972468][ T4300] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 81.023536][ T4300] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 81.142340][ T4300] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 81.152880][ T4300] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 81.161950][ T4300] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 81.185812][ T4300] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 81.244798][ T4300] 8021q: adding VLAN 0 to HW filter on device bond0 [ 81.259231][ T1279] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 81.267916][ T1279] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 81.278723][ T4300] 8021q: adding VLAN 0 to HW filter on device team0 [ 81.299934][ T1279] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 81.309227][ T1279] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 81.317997][ T1279] bridge0: port 1(bridge_slave_0) entered blocking state [ 81.325070][ T1279] bridge0: port 1(bridge_slave_0) entered forwarding state [ 81.334438][ T1279] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 81.360333][ T1279] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 81.369461][ T1279] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 81.378384][ T1279] bridge0: port 2(bridge_slave_1) entered blocking state [ 81.385461][ T1279] bridge0: port 2(bridge_slave_1) entered forwarding state [ 81.395624][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 81.407899][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 81.421600][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 81.431190][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 81.440406][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 81.466167][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 81.475060][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 81.486931][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 81.495412][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 81.507578][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 81.515954][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 81.542072][ T4300] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 81.617658][ T4272] Bluetooth: hci0: command 0x041b tx timeout [ 81.642584][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 81.650368][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 81.681000][ T4300] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 81.699700][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 81.708736][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 81.733622][ T4300] device veth0_vlan entered promiscuous mode [ 81.741898][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 81.750618][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 81.760965][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 81.769611][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 81.786271][ T4300] device veth1_vlan entered promiscuous mode [ 81.820787][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 81.829966][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 81.838544][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 81.847250][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 81.857953][ T4300] device veth0_macvtap entered promiscuous mode [ 81.869311][ T4300] device veth1_macvtap entered promiscuous mode [ 81.899085][ T9] device hsr_slave_0 left promiscuous mode [ 81.905637][ T9] device hsr_slave_1 left promiscuous mode [ 81.912372][ T9] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 81.921107][ T9] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 81.930737][ T9] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 81.940043][ T9] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 81.948258][ T9] device bridge_slave_1 left promiscuous mode [ 81.955313][ T9] bridge0: port 2(bridge_slave_1) entered disabled state [ 81.970755][ T9] device bridge_slave_0 left promiscuous mode [ 81.977412][ T9] bridge0: port 1(bridge_slave_0) entered disabled state [ 81.995264][ T9] device veth1_macvtap left promiscuous mode [ 82.002147][ T9] device veth0_macvtap left promiscuous mode [ 82.008339][ T9] device veth1_vlan left promiscuous mode [ 82.014265][ T9] device veth0_vlan left promiscuous mode [ 82.192042][ T9] team0 (unregistering): Port device team_slave_1 removed [ 82.207906][ T9] team0 (unregistering): Port device team_slave_0 removed [ 82.223110][ T9] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 82.241889][ T9] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 82.305969][ T9] bond0 (unregistering): Released all slaves [ 82.365269][ T4300] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 82.373404][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 82.382850][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 82.391065][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 82.400001][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 82.419686][ T4300] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 82.427200][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 82.435939][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 82.448115][ T4300] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 82.457863][ T4300] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 82.467500][ T4300] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 82.476263][ T4300] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 82.554629][ T144] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 82.565306][ T144] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 82.586159][ T1189] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 82.607156][ T1279] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 82.615033][ T1279] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 82.622981][ T1279] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 82.730313][ T4313] [ 82.732693][ T4313] ====================================================== [ 82.739724][ T4313] WARNING: possible circular locking dependency detected [ 82.746771][ T4313] syzkaller #0 Not tainted [ 82.751204][ T4313] ------------------------------------------------------ [ 82.758230][ T4313] syz.0.17/4313 is trying to acquire lock: [ 82.764041][ T4313] ffff88802cc19028 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}, at: __flush_work+0xfa/0x210 [ 82.775112][ T4313] [ 82.775112][ T4313] but task is already holding lock: [ 82.782490][ T4313] ffffffff8d6d5ea8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x1ae/0x560 [ 82.792280][ T4313] [ 82.792280][ T4313] which lock already depends on the new lock. [ 82.792280][ T4313] [ 82.802694][ T4313] [ 82.802694][ T4313] the existing dependency chain (in reverse order) is: [ 82.811716][ T4313] [ 82.811716][ T4313] -> #4 (rfkill_global_mutex){+.+.}-{3:3}: [ 82.819726][ T4313] __mutex_lock_common+0x1e5/0x2400 [ 82.825470][ T4313] mutex_lock_nested+0x17/0x20 [ 82.830768][ T4313] rfkill_register+0x2f/0x970 [ 82.835980][ T4313] hci_register_dev+0x459/0x980 [ 82.841371][ T4313] vhci_create_device+0x32e/0x5c0 [ 82.846930][ T4313] vhci_write+0x389/0x440 [ 82.851799][ T4313] vfs_write+0x748/0xd70 [ 82.856608][ T4313] ksys_write+0x153/0x260 [ 82.861472][ T4313] do_syscall_64+0x4c/0xa0 [ 82.866424][ T4313] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 82.872852][ T4313] [ 82.872852][ T4313] -> #3 (&data->open_mutex){+.+.}-{3:3}: [ 82.880685][ T4313] __mutex_lock_common+0x1e5/0x2400 [ 82.886426][ T4313] mutex_lock_nested+0x17/0x20 [ 82.891727][ T4313] vhci_send_frame+0x88/0x100 [ 82.896949][ T4313] hci_send_frame+0x1a9/0x2e0 [ 82.902161][ T4313] hci_tx_work+0x9b5/0x16d0 [ 82.907205][ T4313] process_one_work+0x867/0xff0 [ 82.912593][ T4313] worker_thread+0xad7/0x12a0 [ 82.917812][ T4313] kthread+0x42e/0x520 [ 82.922415][ T4313] ret_from_fork+0x1f/0x30 [ 82.927399][ T4313] [ 82.927399][ T4313] -> #2 ((work_completion)(&hdev->tx_work)){+.+.}-{0:0}: [ 82.936621][ T4313] __flush_work+0x116/0x210 [ 82.941662][ T4313] hci_dev_do_close+0x201/0x1020 [ 82.947140][ T4313] hci_unregister_dev+0x2eb/0x590 [ 82.952725][ T4313] vhci_release+0x73/0xc0 [ 82.957598][ T4313] __fput+0x212/0x8c0 [ 82.962114][ T4313] task_work_run+0x125/0x1a0 [ 82.967259][ T4313] do_exit+0x635/0x2110 [ 82.971947][ T4313] do_group_exit+0x12c/0x2f0 [ 82.977072][ T4313] get_signal+0x7eb/0x12e0 [ 82.982019][ T4313] arch_do_signal_or_restart+0xe6/0x12a0 [ 82.988191][ T4313] exit_to_user_mode_loop+0x9e/0x130 [ 82.994014][ T4313] exit_to_user_mode_prepare+0xee/0x180 [ 83.000093][ T4313] syscall_exit_to_user_mode+0x16/0x40 [ 83.006230][ T4313] do_syscall_64+0x58/0xa0 [ 83.011220][ T4313] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 83.017658][ T4313] [ 83.017658][ T4313] -> #1 (&hdev->req_lock){+.+.}-{3:3}: [ 83.025321][ T4313] __mutex_lock_common+0x1e5/0x2400 [ 83.031068][ T4313] mutex_lock_nested+0x17/0x20 [ 83.036371][ T4313] bg_scan_update+0x44/0x3b0 [ 83.041502][ T4313] process_one_work+0x867/0xff0 [ 83.046896][ T4313] worker_thread+0xad7/0x12a0 [ 83.052108][ T4313] kthread+0x42e/0x520 [ 83.056736][ T4313] ret_from_fork+0x1f/0x30 [ 83.061691][ T4313] [ 83.061691][ T4313] -> #0 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}: [ 83.071518][ T4313] __lock_acquire+0x2c66/0x7b50 [ 83.076909][ T4313] lock_acquire+0x19e/0x400 [ 83.082129][ T4313] __flush_work+0x116/0x210 [ 83.087164][ T4313] __cancel_work_timer+0x3f4/0x560 [ 83.092815][ T4313] hci_request_cancel_all+0xcc/0x300 [ 83.098665][ T4313] hci_dev_do_close+0x4e/0x1020 [ 83.104047][ T4313] hci_rfkill_set_block+0x101/0x180 [ 83.109781][ T4313] rfkill_set_block+0x1c1/0x3c0 [ 83.115174][ T4313] rfkill_fop_write+0x453/0x560 [ 83.120563][ T4313] vfs_write+0x304/0xd70 [ 83.125361][ T4313] ksys_write+0x153/0x260 [ 83.130224][ T4313] do_syscall_64+0x4c/0xa0 [ 83.135174][ T4313] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 83.141600][ T4313] [ 83.141600][ T4313] other info that might help us debug this: [ 83.141600][ T4313] [ 83.151836][ T4313] Chain exists of: [ 83.151836][ T4313] (work_completion)(&hdev->bg_scan_update) --> &data->open_mutex --> rfkill_global_mutex [ 83.151836][ T4313] [ 83.167571][ T4313] Possible unsafe locking scenario: [ 83.167571][ T4313] [ 83.175040][ T4313] CPU0 CPU1 [ 83.180428][ T4313] ---- ---- [ 83.185810][ T4313] lock(rfkill_global_mutex); [ 83.190601][ T4313] lock(&data->open_mutex); [ 83.197720][ T4313] lock(rfkill_global_mutex); [ 83.205026][ T4313] lock((work_completion)(&hdev->bg_scan_update)); [ 83.211628][ T4313] [ 83.211628][ T4313] *** DEADLOCK *** [ 83.211628][ T4313] [ 83.219781][ T4313] 1 lock held by syz.0.17/4313: [ 83.224644][ T4313] #0: ffffffff8d6d5ea8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x1ae/0x560 [ 83.234754][ T4313] [ 83.234754][ T4313] stack backtrace: [ 83.240667][ T4313] CPU: 1 PID: 4313 Comm: syz.0.17 Not tainted syzkaller #0 [ 83.247877][ T4313] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 [ 83.257984][ T4313] Call Trace: [ 83.261745][ T4313] [ 83.264695][ T4313] dump_stack_lvl+0x188/0x250 [ 83.269398][ T4313] ? load_image+0x410/0x410 [ 83.274008][ T4313] ? show_regs_print_info+0x20/0x20 [ 83.279230][ T4313] ? print_circular_bug+0x12b/0x1a0 [ 83.284445][ T4313] check_noncircular+0x296/0x330 [ 83.289395][ T4313] ? look_up_lock_class+0x71/0x110 [ 83.294525][ T4313] ? add_chain_block+0x9b0/0x9b0 [ 83.299477][ T4313] ? lockdep_lock+0xf1/0x1f0 [ 83.304086][ T4313] ? __lock_acquire+0x1305/0x7b50 [ 83.309140][ T4313] ? mark_lock+0x94/0x320 [ 83.313481][ T4313] ? _find_first_zero_bit+0xd1/0xf0 [ 83.318695][ T4313] __lock_acquire+0x2c66/0x7b50 [ 83.323569][ T4313] ? verify_lock_unused+0x140/0x140 [ 83.328797][ T4313] ? verify_lock_unused+0x140/0x140 [ 83.334026][ T4313] lock_acquire+0x19e/0x400 [ 83.338550][ T4313] ? __flush_work+0xfa/0x210 [ 83.343179][ T4313] ? __lock_acquire+0x7b50/0x7b50 [ 83.348224][ T4313] ? read_lock_is_recursive+0x10/0x10 [ 83.354084][ T4313] ? start_flush_work+0x784/0x830 [ 83.359141][ T4313] __flush_work+0x116/0x210 [ 83.363669][ T4313] ? __flush_work+0xfa/0x210 [ 83.368293][ T4313] ? flush_work+0x20/0x20 [ 83.372643][ T4313] ? try_to_grab_pending+0xfb/0x820 [ 83.377865][ T4313] ? mark_lock+0x94/0x320 [ 83.382250][ T4313] ? lockdep_hardirqs_on_prepare+0x448/0x7c0 [ 83.388255][ T4313] ? lock_chain_count+0x20/0x20 [ 83.393121][ T4313] ? mark_lock+0x94/0x320 [ 83.397467][ T4313] ? __cancel_work_timer+0x36a/0x560 [ 83.402774][ T4313] __cancel_work_timer+0x3f4/0x560 [ 83.407901][ T4313] ? cancel_work_sync+0x20/0x20 [ 83.412766][ T4313] ? __cancel_work+0x1f9/0x2e0 [ 83.417543][ T4313] ? lockdep_hardirqs_on+0x94/0x140 [ 83.422785][ T4313] ? __cancel_work+0x27b/0x2e0 [ 83.427564][ T4313] ? cancel_work+0x20/0x20 [ 83.432001][ T4313] hci_request_cancel_all+0xcc/0x300 [ 83.437302][ T4313] hci_dev_do_close+0x4e/0x1020 [ 83.442166][ T4313] ? _raw_spin_unlock_irqrestore+0xc1/0x120 [ 83.448072][ T4313] ? _raw_spin_unlock+0x40/0x40 [ 83.452939][ T4313] hci_rfkill_set_block+0x101/0x180 [ 83.458153][ T4313] ? rcu_lock_release+0x20/0x20 [ 83.463111][ T4313] rfkill_set_block+0x1c1/0x3c0 [ 83.468010][ T4313] rfkill_fop_write+0x453/0x560 [ 83.472877][ T4313] ? rfkill_fop_read+0x560/0x560 [ 83.477834][ T4313] ? common_file_perm+0x100/0x1c0 [ 83.482873][ T4313] ? fsnotify_perm+0x5d/0x560 [ 83.487569][ T4313] ? security_file_permission+0x75/0xa0 [ 83.493129][ T4313] ? rfkill_fop_read+0x560/0x560 [ 83.498086][ T4313] vfs_write+0x304/0xd70 [ 83.502343][ T4313] ? file_end_write+0x250/0x250 [ 83.507211][ T4313] ? __context_tracking_exit+0x4c/0x80 [ 83.512685][ T4313] ? __fdget_pos+0x1e2/0x370 [ 83.517299][ T4313] ksys_write+0x153/0x260 [ 83.521642][ T4313] ? __ia32_sys_read+0x80/0x80 [ 83.526419][ T4313] ? lockdep_hardirqs_on+0x94/0x140 [ 83.531636][ T4313] do_syscall_64+0x4c/0xa0 [ 83.536065][ T4313] ? clear_bhb_loop+0x30/0x80 [ 83.540762][ T4313] ? clear_bhb_loop+0x30/0x80 [ 83.545458][ T4313] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 83.551377][ T4313] RIP: 0033:0x7faa29f440d9 [ 83.555813][ T4313] 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 [ 83.575458][ T4313] RSP: 002b:00007ffc933878b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 83.583888][ T4313] RAX: ffffffffffffffda RBX: 00007faa2a1cbfa0 RCX: 00007faa29f440d9 [ 83.591872][ T4313] RDX: 0000000000000008 RSI: 0000200000000000 RDI: 0000000000000003 [ 83.599861][ T4313] RBP: 00007faa29fdb024 R08: 0000000000000000 R09: 0000000000000000 [ 83.607850][ T4313] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 83.615834][ T4313] R13: 00007faa2a1cbfac R14: 00007faa2a1cbfa0 R15: 00007faa2a1cbfa0 [ 83.623830][ T4313]