Warning: Permanently added '10.128.0.102' (ED25519) to the list of known hosts. 2026/06/07 01:37:11 parsed 1 programs [ 68.743826][ T4199] cgroup: Unknown subsys name 'net' [ 68.881376][ T4199] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size = 127995904 bytes [ 70.333727][ T4199] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k FS [ 71.197296][ T1421] ieee802154 phy0 wpan0: encryption failed: -22 [ 71.203805][ T1421] ieee802154 phy1 wpan1: encryption failed: -22 [ 72.264353][ T1226] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 72.272400][ T1226] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 72.285297][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 72.308873][ T154] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 72.316786][ T154] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 72.324315][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 74.079127][ T4259] chnl_net:caif_netlink_parms(): no params data found [ 74.148595][ T4259] bridge0: port 1(bridge_slave_0) entered blocking state [ 74.156352][ T4259] bridge0: port 1(bridge_slave_0) entered disabled state [ 74.165507][ T4259] device bridge_slave_0 entered promiscuous mode [ 74.176293][ T4259] bridge0: port 2(bridge_slave_1) entered blocking state [ 74.183536][ T4259] bridge0: port 2(bridge_slave_1) entered disabled state [ 74.191694][ T4259] device bridge_slave_1 entered promiscuous mode [ 74.219068][ T4259] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 74.231763][ T4259] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 74.268315][ T4259] team0: Port device team_slave_0 added [ 74.281803][ T4259] team0: Port device team_slave_1 added [ 74.305602][ T4259] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 74.312852][ 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. [ 74.339380][ T4259] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 74.357337][ T4259] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 74.364312][ 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. [ 74.390712][ T4259] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 74.430925][ T4259] device hsr_slave_0 entered promiscuous mode [ 74.438901][ T4259] device hsr_slave_1 entered promiscuous mode [ 74.550231][ T4259] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 74.561689][ T4259] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 74.570771][ T4259] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 74.580033][ T4259] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 74.604114][ T4259] bridge0: port 2(bridge_slave_1) entered blocking state [ 74.611323][ T4259] bridge0: port 2(bridge_slave_1) entered forwarding state [ 74.619338][ T4259] bridge0: port 1(bridge_slave_0) entered blocking state [ 74.626452][ T4259] bridge0: port 1(bridge_slave_0) entered forwarding state [ 74.680363][ T4259] 8021q: adding VLAN 0 to HW filter on device bond0 [ 74.694019][ T1226] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 74.703347][ T1226] bridge0: port 1(bridge_slave_0) entered disabled state [ 74.712948][ T1226] bridge0: port 2(bridge_slave_1) entered disabled state [ 74.721411][ T1226] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 74.760270][ T4259] 8021q: adding VLAN 0 to HW filter on device team0 [ 74.771545][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 74.781999][ T154] bridge0: port 1(bridge_slave_0) entered blocking state [ 74.789169][ T154] bridge0: port 1(bridge_slave_0) entered forwarding state [ 74.802655][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 74.811453][ T154] bridge0: port 2(bridge_slave_1) entered blocking state [ 74.818571][ T154] bridge0: port 2(bridge_slave_1) entered forwarding state [ 74.836847][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 74.847174][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 74.861207][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 74.896439][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 74.908362][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 74.922701][ T4259] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 75.048670][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 75.056604][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 75.070923][ T4259] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 75.107132][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 75.116617][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 75.134773][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 75.143508][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 75.153501][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 75.161829][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 75.173644][ T4259] device veth0_vlan entered promiscuous mode [ 75.207741][ T4259] device veth1_vlan entered promiscuous mode [ 75.229370][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 75.237811][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 75.246295][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 75.254701][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 75.266683][ T4259] device veth0_macvtap entered promiscuous mode [ 75.278989][ T4259] device veth1_macvtap entered promiscuous mode [ 75.318814][ T4259] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 75.326470][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 75.336471][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 75.344388][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 75.353014][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 75.366486][ T4259] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 75.373907][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 75.383434][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 75.412708][ T4259] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 75.421716][ T4259] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 75.430626][ T4259] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 75.440145][ T4259] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 75.562412][ T4259] syz-executor (4259) used greatest stack depth: 20944 bytes left 2026/06/07 01:37:21 executed programs: 0 [ 76.513702][ T4309] chnl_net:caif_netlink_parms(): no params data found [ 76.576958][ T4309] bridge0: port 1(bridge_slave_0) entered blocking state [ 76.584633][ T4309] bridge0: port 1(bridge_slave_0) entered disabled state [ 76.594570][ T4309] device bridge_slave_0 entered promiscuous mode [ 76.607982][ T4309] bridge0: port 2(bridge_slave_1) entered blocking state [ 76.616370][ T4309] bridge0: port 2(bridge_slave_1) entered disabled state [ 76.624539][ T4309] device bridge_slave_1 entered promiscuous mode [ 76.658315][ T4309] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 76.671508][ T4309] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 76.703426][ T4309] team0: Port device team_slave_0 added [ 76.714097][ T4309] team0: Port device team_slave_1 added [ 76.742576][ T4309] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 76.751134][ T4309] 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. [ 76.779830][ T4309] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 76.792750][ T4309] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 76.802860][ T4309] 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. [ 76.831591][ T4309] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 76.879217][ T4309] device hsr_slave_0 entered promiscuous mode [ 76.888475][ T4309] device hsr_slave_1 entered promiscuous mode [ 76.896439][ T4309] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 76.910767][ T4309] Cannot create hsr debugfs directory [ 77.021121][ T4309] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 78.406299][ T4319] Bluetooth: hci0: command 0x0409 tx timeout [ 80.392039][ T4309] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 80.485467][ T4319] Bluetooth: hci0: command 0x041b tx timeout [ 80.819841][ T4309] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 80.873473][ T4309] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 80.989745][ T4309] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 80.999765][ T4309] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 81.008817][ T4309] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 81.018693][ T4309] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 81.078840][ T4309] 8021q: adding VLAN 0 to HW filter on device bond0 [ 81.103315][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 81.111998][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 81.122343][ T4309] 8021q: adding VLAN 0 to HW filter on device team0 [ 81.132500][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 81.142087][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 81.151200][ T9] bridge0: port 1(bridge_slave_0) entered blocking state [ 81.158341][ T9] bridge0: port 1(bridge_slave_0) entered forwarding state [ 81.167315][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 81.179782][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 81.188803][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 81.197406][ T9] bridge0: port 2(bridge_slave_1) entered blocking state [ 81.204459][ T9] bridge0: port 2(bridge_slave_1) entered forwarding state [ 81.229049][ T1226] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 81.242764][ T1226] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 81.258310][ T1226] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 81.267291][ T1226] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 81.278027][ T1226] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 81.287247][ T1226] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 81.307015][ T1226] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 81.316849][ T1226] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 81.326428][ T1226] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 81.337478][ T1226] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 81.346330][ T1226] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 81.357434][ T4309] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 81.430632][ T511] device hsr_slave_0 left promiscuous mode [ 81.439814][ T511] device hsr_slave_1 left promiscuous mode [ 81.448195][ T511] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 81.459550][ T511] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 81.468886][ T511] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 81.476579][ T511] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 81.484295][ T511] device bridge_slave_1 left promiscuous mode [ 81.491621][ T511] bridge0: port 2(bridge_slave_1) entered disabled state [ 81.509798][ T511] device bridge_slave_0 left promiscuous mode [ 81.516100][ T511] bridge0: port 1(bridge_slave_0) entered disabled state [ 81.533501][ T511] device veth1_macvtap left promiscuous mode [ 81.540400][ T511] device veth0_macvtap left promiscuous mode [ 81.546897][ T511] device veth1_vlan left promiscuous mode [ 81.552816][ T511] device veth0_vlan left promiscuous mode [ 81.722201][ T511] team0 (unregistering): Port device team_slave_1 removed [ 81.742963][ T511] team0 (unregistering): Port device team_slave_0 removed [ 81.756331][ T511] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 81.772175][ T511] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 81.831614][ T511] bond0 (unregistering): Released all slaves [ 81.884602][ T1226] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 81.892519][ T1226] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 81.904736][ T4309] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 81.925524][ T1226] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 81.936858][ T1226] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 81.962766][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 81.971021][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 81.981149][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 81.989348][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 82.000102][ T4309] device veth0_vlan entered promiscuous mode [ 82.012249][ T4309] device veth1_vlan entered promiscuous mode [ 82.033714][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 82.041839][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 82.050353][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 82.059378][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 82.072792][ T4309] device veth0_macvtap entered promiscuous mode [ 82.090282][ T4309] device veth1_macvtap entered promiscuous mode [ 82.106775][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 82.114844][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 82.126656][ T4309] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 82.134567][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 82.144182][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 82.155745][ T4309] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 82.164758][ T1226] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 82.174660][ T1226] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 82.184444][ T4309] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 82.193342][ T4309] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 82.202422][ T4309] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 82.211405][ T4309] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 82.264178][ T1226] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 82.274465][ T1226] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 82.303540][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 82.314036][ T154] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 82.323150][ T154] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 82.332505][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 82.487329][ T4325] [ 82.489712][ T4325] ====================================================== [ 82.496745][ T4325] WARNING: possible circular locking dependency detected [ 82.503793][ T4325] syzkaller #0 Not tainted [ 82.508229][ T4325] ------------------------------------------------------ [ 82.515265][ T4325] syz.0.17/4325 is trying to acquire lock: [ 82.521085][ T4325] ffff88807dc31028 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}, at: __flush_work+0xfa/0x210 [ 82.532314][ T4325] [ 82.532314][ T4325] but task is already holding lock: [ 82.539695][ T4325] ffffffff8d6c73e8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x18b/0x560 [ 82.549383][ T4325] [ 82.549383][ T4325] which lock already depends on the new lock. [ 82.549383][ T4325] [ 82.559806][ T4325] [ 82.559806][ T4325] the existing dependency chain (in reverse order) is: [ 82.568844][ T4325] [ 82.568844][ T4325] -> #4 (rfkill_global_mutex){+.+.}-{3:3}: [ 82.576887][ T4325] __mutex_lock_common+0x1e3/0x2400 [ 82.582648][ T4325] mutex_lock_nested+0x17/0x20 [ 82.587962][ T4325] rfkill_register+0x33/0x980 [ 82.593194][ T4325] hci_register_dev+0x452/0x970 [ 82.595249][ T2239] Bluetooth: hci0: command 0x040f tx timeout [ 82.598588][ T4325] vhci_create_device+0x32c/0x5c0 [ 82.598624][ T4325] vhci_write+0x391/0x450 [ 82.615009][ T4325] vfs_write+0x745/0xd60 [ 82.619806][ T4325] ksys_write+0x152/0x260 [ 82.624679][ T4325] do_syscall_64+0x4c/0xa0 [ 82.629636][ T4325] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 82.636084][ T4325] [ 82.636084][ T4325] -> #3 (&data->open_mutex){+.+.}-{3:3}: [ 82.643933][ T4325] __mutex_lock_common+0x1e3/0x2400 [ 82.649676][ T4325] mutex_lock_nested+0x17/0x20 [ 82.654992][ T4325] vhci_send_frame+0x88/0x100 [ 82.660220][ T4325] hci_send_frame+0x1a9/0x2e0 [ 82.665446][ T4325] hci_tx_work+0x9f9/0x1710 [ 82.670589][ T4325] process_one_work+0x85f/0x1010 [ 82.676070][ T4325] worker_thread+0xaa6/0x1290 [ 82.681281][ T4325] kthread+0x436/0x520 [ 82.685884][ T4325] ret_from_fork+0x1f/0x30 [ 82.690838][ T4325] [ 82.690838][ T4325] -> #2 ((work_completion)(&hdev->tx_work)){+.+.}-{0:0}: [ 82.700077][ T4325] __flush_work+0x116/0x210 [ 82.705124][ T4325] hci_dev_do_close+0x1e7/0x1030 [ 82.710638][ T4325] hci_unregister_dev+0x2eb/0x590 [ 82.716208][ T4325] vhci_release+0x73/0xc0 [ 82.721089][ T4325] __fput+0x234/0x930 [ 82.725700][ T4325] task_work_run+0x125/0x1a0 [ 82.730831][ T4325] do_exit+0x626/0x20c0 [ 82.735530][ T4325] do_group_exit+0x12e/0x300 [ 82.740663][ T4325] get_signal+0x6d6/0x12d0 [ 82.745624][ T4325] arch_do_signal_or_restart+0xe7/0x12c0 [ 82.751801][ T4325] exit_to_user_mode_loop+0x9e/0x130 [ 82.757714][ T4325] exit_to_user_mode_prepare+0xee/0x180 [ 82.763800][ T4325] syscall_exit_to_user_mode+0x16/0x40 [ 82.769884][ T4325] do_syscall_64+0x58/0xa0 [ 82.774846][ T4325] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 82.781304][ T4325] [ 82.781304][ T4325] -> #1 (&hdev->req_lock){+.+.}-{3:3}: [ 82.788972][ T4325] __mutex_lock_common+0x1e3/0x2400 [ 82.794726][ T4325] mutex_lock_nested+0x17/0x20 [ 82.800043][ T4325] bg_scan_update+0x44/0x3b0 [ 82.805190][ T4325] process_one_work+0x85f/0x1010 [ 82.810804][ T4325] worker_thread+0xaa6/0x1290 [ 82.816031][ T4325] kthread+0x436/0x520 [ 82.820731][ T4325] ret_from_fork+0x1f/0x30 [ 82.825693][ T4325] [ 82.825693][ T4325] -> #0 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}: [ 82.835553][ T4325] __lock_acquire+0x2c42/0x7d10 [ 82.840961][ T4325] lock_acquire+0x19e/0x400 [ 82.846099][ T4325] __flush_work+0x116/0x210 [ 82.851152][ T4325] __cancel_work_timer+0x3f4/0x560 [ 82.856825][ T4325] hci_request_cancel_all+0xcc/0x300 [ 82.862661][ T4325] hci_dev_do_close+0x4e/0x1030 [ 82.868052][ T4325] hci_rfkill_set_block+0x10a/0x190 [ 82.873796][ T4325] rfkill_set_block+0x1c9/0x3d0 [ 82.879302][ T4325] rfkill_fop_write+0x452/0x560 [ 82.884706][ T4325] vfs_write+0x30b/0xd60 [ 82.889490][ T4325] ksys_write+0x152/0x260 [ 82.894372][ T4325] do_syscall_64+0x4c/0xa0 [ 82.899346][ T4325] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 82.905795][ T4325] [ 82.905795][ T4325] other info that might help us debug this: [ 82.905795][ T4325] [ 82.916043][ T4325] Chain exists of: [ 82.916043][ T4325] (work_completion)(&hdev->bg_scan_update) --> &data->open_mutex --> rfkill_global_mutex [ 82.916043][ T4325] [ 82.931824][ T4325] Possible unsafe locking scenario: [ 82.931824][ T4325] [ 82.939299][ T4325] CPU0 CPU1 [ 82.944688][ T4325] ---- ---- [ 82.950071][ T4325] lock(rfkill_global_mutex); [ 82.954858][ T4325] lock(&data->open_mutex); [ 82.961987][ T4325] lock(rfkill_global_mutex); [ 82.969301][ T4325] lock((work_completion)(&hdev->bg_scan_update)); [ 82.976085][ T4325] [ 82.976085][ T4325] *** DEADLOCK *** [ 82.976085][ T4325] [ 82.984249][ T4325] 1 lock held by syz.0.17/4325: [ 82.989128][ T4325] #0: ffffffff8d6c73e8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x18b/0x560 [ 82.999262][ T4325] [ 82.999262][ T4325] stack backtrace: [ 83.005196][ T4325] CPU: 0 PID: 4325 Comm: syz.0.17 Not tainted syzkaller #0 [ 83.012419][ T4325] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 83.022518][ T4325] Call Trace: [ 83.025822][ T4325] [ 83.028768][ T4325] dump_stack_lvl+0x188/0x250 [ 83.033477][ T4325] ? load_image+0x400/0x400 [ 83.038012][ T4325] ? show_regs_print_info+0x20/0x20 [ 83.043235][ T4325] ? print_circular_bug+0x12b/0x1a0 [ 83.048459][ T4325] check_noncircular+0x296/0x330 [ 83.053435][ T4325] ? look_up_lock_class+0x71/0x110 [ 83.058580][ T4325] ? add_chain_block+0x940/0x940 [ 83.063541][ T4325] ? lockdep_lock+0xf1/0x1f0 [ 83.068161][ T4325] ? __lock_acquire+0x12e8/0x7d10 [ 83.073211][ T4325] ? mark_lock+0x94/0x320 [ 83.077569][ T4325] __lock_acquire+0x2c42/0x7d10 [ 83.082464][ T4325] ? verify_lock_unused+0x140/0x140 [ 83.087699][ T4325] ? verify_lock_unused+0x140/0x140 [ 83.092923][ T4325] ? mark_lock+0x94/0x320 [ 83.097280][ T4325] lock_acquire+0x19e/0x400 [ 83.101813][ T4325] ? __flush_work+0xfa/0x210 [ 83.106430][ T4325] ? __lock_acquire+0x7d10/0x7d10 [ 83.111583][ T4325] ? read_lock_is_recursive+0x10/0x10 [ 83.116998][ T4325] ? start_flush_work+0x776/0x820 [ 83.122057][ T4325] __flush_work+0x116/0x210 [ 83.126585][ T4325] ? __flush_work+0xfa/0x210 [ 83.131209][ T4325] ? flush_work+0x20/0x20 [ 83.135661][ T4325] ? try_to_grab_pending+0xfa/0x7f0 [ 83.140890][ T4325] ? mark_lock+0x94/0x320 [ 83.145244][ T4325] ? lockdep_hardirqs_on_prepare+0x409/0x770 [ 83.151255][ T4325] ? lock_chain_count+0x20/0x20 [ 83.156137][ T4325] ? mark_lock+0x94/0x320 [ 83.160584][ T4325] ? __cancel_work_timer+0x36a/0x560 [ 83.165894][ T4325] __cancel_work_timer+0x3f4/0x560 [ 83.171037][ T4325] ? cancel_work_sync+0x20/0x20 [ 83.175906][ T4325] ? __cancel_work+0x1f9/0x2e0 [ 83.180705][ T4325] ? lockdep_hardirqs_on+0x94/0x140 [ 83.185936][ T4325] ? __cancel_work+0x27b/0x2e0 [ 83.190727][ T4325] ? cancel_work+0x20/0x20 [ 83.195167][ T4325] ? lock_chain_count+0x20/0x20 [ 83.200045][ T4325] hci_request_cancel_all+0xcc/0x300 [ 83.205454][ T4325] hci_dev_do_close+0x4e/0x1030 [ 83.210349][ T4325] ? _raw_spin_unlock_irqrestore+0xc1/0x120 [ 83.216270][ T4325] ? _raw_spin_unlock+0x40/0x40 [ 83.221146][ T4325] hci_rfkill_set_block+0x10a/0x190 [ 83.226370][ T4325] ? rcu_lock_release+0x20/0x20 [ 83.231254][ T4325] rfkill_set_block+0x1c9/0x3d0 [ 83.236143][ T4325] rfkill_fop_write+0x452/0x560 [ 83.241022][ T4325] ? rfkill_fop_read+0x520/0x520 [ 83.245986][ T4325] ? common_file_perm+0xb0/0x1c0 [ 83.250954][ T4325] ? fsnotify_perm+0x5d/0x560 [ 83.255658][ T4325] ? security_file_permission+0x75/0xa0 [ 83.261229][ T4325] ? rfkill_fop_read+0x520/0x520 [ 83.266291][ T4325] vfs_write+0x30b/0xd60 [ 83.270558][ T4325] ? file_end_write+0x250/0x250 [ 83.275434][ T4325] ? __context_tracking_exit+0x4c/0x80 [ 83.280932][ T4325] ? __lock_acquire+0x7d10/0x7d10 [ 83.285996][ T4325] ? __fdget_pos+0x1e2/0x370 [ 83.290622][ T4325] ksys_write+0x152/0x260 [ 83.294978][ T4325] ? __ia32_sys_read+0x80/0x80 [ 83.299773][ T4325] ? lockdep_hardirqs_on+0x94/0x140 [ 83.305005][ T4325] do_syscall_64+0x4c/0xa0 [ 83.309445][ T4325] ? clear_bhb_loop+0x30/0x80 [ 83.314156][ T4325] ? clear_bhb_loop+0x30/0x80 [ 83.318862][ T4325] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 83.324805][ T4325] RIP: 0033:0x7fdb8e445e59 [ 83.329248][ T4325] 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 [ 83.348883][ T4325] RSP: 002b:00007fff052c5308 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 83.357328][ T4325] RAX: ffffffffffffffda RBX: 00007fdb8e6befa0 RCX: 00007fdb8e445e59 [ 83.365330][ T4325] RDX: 0000000000000008 RSI: 0000200000000080 RDI: 0000000000000003 [ 83.373321][ T4325] RBP: 00007fdb8e4dbd6f R08: 0000000000000000 R09: 0000000000000000 [ 83.381313][ T4325] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 83.389314][ T4325] R13: 00007fdb8e6befac R14: 00007fdb8e6befa0 R15: 00007fdb8e6befa0 [ 83.397315][ T4325]