Warning: Permanently added '10.128.0.54' (ED25519) to the list of known hosts. 2026/04/06 10:25:47 parsed 1 programs [ 68.810527][ T4187] cgroup: Unknown subsys name 'net' [ 68.941779][ T4187] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size = 127995904 bytes [ 70.418984][ T4187] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k FS [ 71.238724][ T1421] ieee802154 phy0 wpan0: encryption failed: -22 [ 71.245256][ T1421] ieee802154 phy1 wpan1: encryption failed: -22 [ 72.577254][ T1220] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 72.594347][ T1220] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 72.624161][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 72.641700][ T1220] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 72.650490][ T1220] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 72.660323][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 73.171813][ T4241] chnl_net:caif_netlink_parms(): no params data found [ 73.237362][ T4241] bridge0: port 1(bridge_slave_0) entered blocking state [ 73.245188][ T4241] bridge0: port 1(bridge_slave_0) entered disabled state [ 73.253391][ T4241] device bridge_slave_0 entered promiscuous mode [ 73.263724][ T4241] bridge0: port 2(bridge_slave_1) entered blocking state [ 73.271126][ T4241] bridge0: port 2(bridge_slave_1) entered disabled state [ 73.279568][ T4241] device bridge_slave_1 entered promiscuous mode [ 73.304568][ T4241] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 73.317531][ T4241] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 73.346713][ T4241] team0: Port device team_slave_0 added [ 73.354668][ T4241] team0: Port device team_slave_1 added [ 73.378735][ T4241] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 73.385821][ T4241] 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. [ 73.413335][ T4241] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 73.428035][ T4241] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 73.435163][ T4241] 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. [ 73.462835][ T4241] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 73.502607][ T4241] device hsr_slave_0 entered promiscuous mode [ 73.510773][ T4241] device hsr_slave_1 entered promiscuous mode [ 73.655652][ T4241] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 73.667363][ T4241] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 73.677901][ T4241] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 73.688379][ T4241] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 73.762878][ T4241] 8021q: adding VLAN 0 to HW filter on device bond0 [ 73.778210][ T1220] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 73.787541][ T1220] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 73.799913][ T4241] 8021q: adding VLAN 0 to HW filter on device team0 [ 73.811349][ T1220] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 73.820503][ T1220] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 73.829707][ T1220] bridge0: port 1(bridge_slave_0) entered blocking state [ 73.836968][ T1220] bridge0: port 1(bridge_slave_0) entered forwarding state [ 73.848722][ T1220] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 73.857708][ T1220] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 73.866691][ T1220] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 73.875505][ T1220] bridge0: port 2(bridge_slave_1) entered blocking state [ 73.882600][ T1220] bridge0: port 2(bridge_slave_1) entered forwarding state [ 73.896443][ T1220] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 73.908461][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 73.920489][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 73.929919][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 73.938989][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 73.956938][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 73.966118][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 73.974613][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 73.983257][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 74.000069][ T4241] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 74.011864][ T4241] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 74.020606][ T4228] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 74.033669][ T4228] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 74.174281][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 74.182825][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 74.200947][ T4241] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 74.218883][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 74.228017][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 74.246799][ T1220] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 74.255900][ T1220] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 74.264336][ T1220] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 74.272779][ T1220] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 74.284226][ T4241] device veth0_vlan entered promiscuous mode [ 74.297341][ T4241] device veth1_vlan entered promiscuous mode [ 74.317943][ T4228] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 74.326316][ T4228] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 74.334286][ T4228] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 74.343011][ T4228] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 74.370027][ T4241] device veth0_macvtap entered promiscuous mode [ 74.379685][ T4241] device veth1_macvtap entered promiscuous mode [ 74.395708][ T4241] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 74.403884][ T4228] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 74.413222][ T4228] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 74.422295][ T4228] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 74.447362][ T4241] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 74.457408][ T4228] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 74.466904][ T4228] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 74.478798][ T4241] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 74.488007][ T4241] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 74.498754][ T4241] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 74.508116][ T4241] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 74.619659][ T4241] syz-executor (4241) used greatest stack depth: 20272 bytes left 2026/04/06 10:25:56 executed programs: 0 [ 76.278406][ T4288] chnl_net:caif_netlink_parms(): no params data found [ 76.342113][ T4288] bridge0: port 1(bridge_slave_0) entered blocking state [ 76.349401][ T4288] bridge0: port 1(bridge_slave_0) entered disabled state [ 76.357982][ T4288] device bridge_slave_0 entered promiscuous mode [ 76.366664][ T4288] bridge0: port 2(bridge_slave_1) entered blocking state [ 76.373836][ T4288] bridge0: port 2(bridge_slave_1) entered disabled state [ 76.382134][ T4288] device bridge_slave_1 entered promiscuous mode [ 76.409982][ T4288] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 76.424048][ T4288] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 76.455368][ T4288] team0: Port device team_slave_0 added [ 76.463547][ T4288] team0: Port device team_slave_1 added [ 76.490858][ T4288] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 76.497934][ T4288] 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. [ 76.527906][ T4288] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 76.540956][ T4288] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 76.550378][ T4288] 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. [ 76.578996][ T4288] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 76.617079][ T4288] device hsr_slave_0 entered promiscuous mode [ 76.623957][ T4288] device hsr_slave_1 entered promiscuous mode [ 76.631101][ T4288] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 76.639328][ T4288] Cannot create hsr debugfs directory [ 76.734580][ T4288] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 78.196432][ T23] Bluetooth: hci0: command 0x0409 tx timeout [ 79.428033][ T4288] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 79.500106][ T4288] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 79.593899][ T4288] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 79.744218][ T4288] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 79.753158][ T4288] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 79.763107][ T4288] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 79.771923][ T4288] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 79.838064][ T4288] 8021q: adding VLAN 0 to HW filter on device bond0 [ 79.872508][ T4288] 8021q: adding VLAN 0 to HW filter on device team0 [ 79.880741][ T4228] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 79.888679][ T4228] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 79.918321][ T4228] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 79.927176][ T4228] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 79.935771][ T4228] bridge0: port 1(bridge_slave_0) entered blocking state [ 79.942834][ T4228] bridge0: port 1(bridge_slave_0) entered forwarding state [ 79.951478][ T4228] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 79.960855][ T4228] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 79.969643][ T4228] bridge0: port 2(bridge_slave_1) entered blocking state [ 79.976854][ T4228] bridge0: port 2(bridge_slave_1) entered forwarding state [ 79.984648][ T4228] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 79.996745][ T4228] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 80.004699][ T4228] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 80.017351][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 80.028495][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 80.038112][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 80.060580][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 80.069882][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 80.080970][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 80.090012][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 80.107971][ T144] device hsr_slave_0 left promiscuous mode [ 80.114459][ T144] device hsr_slave_1 left promiscuous mode [ 80.121770][ T144] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 80.129905][ T144] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 80.139412][ T144] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 80.147090][ T144] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 80.154682][ T144] device bridge_slave_1 left promiscuous mode [ 80.161586][ T144] bridge0: port 2(bridge_slave_1) entered disabled state [ 80.174258][ T144] device bridge_slave_0 left promiscuous mode [ 80.181529][ T144] bridge0: port 1(bridge_slave_0) entered disabled state [ 80.199551][ T144] device veth1_macvtap left promiscuous mode [ 80.207757][ T144] device veth0_macvtap left promiscuous mode [ 80.213828][ T144] device veth1_vlan left promiscuous mode [ 80.220268][ T144] device veth0_vlan left promiscuous mode [ 80.275388][ T23] Bluetooth: hci0: command 0x041b tx timeout [ 80.390667][ T144] team0 (unregistering): Port device team_slave_1 removed [ 80.409396][ T144] team0 (unregistering): Port device team_slave_0 removed [ 80.421779][ T144] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 80.437689][ T144] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 80.497821][ T144] bond0 (unregistering): Released all slaves [ 80.561335][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 80.570001][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 80.579883][ T4288] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 80.689968][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 80.697875][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 80.711402][ T4288] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 80.734898][ T1220] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 80.743994][ T1220] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 80.761199][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 80.769944][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 80.780271][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 80.788482][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 80.799424][ T4288] device veth0_vlan entered promiscuous mode [ 80.814754][ T4288] device veth1_vlan entered promiscuous mode [ 80.835150][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 80.843302][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 80.852154][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 80.860728][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 80.873853][ T4288] device veth0_macvtap entered promiscuous mode [ 80.884377][ T4288] device veth1_macvtap entered promiscuous mode [ 80.892770][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 80.901602][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 80.921358][ T4288] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 80.929687][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 80.939926][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 80.951319][ T4288] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 80.967714][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 80.977482][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 80.990030][ T4288] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 80.999686][ T4288] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 81.008830][ T4288] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 81.017790][ T4288] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 81.093206][ T154] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 81.111106][ T154] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 81.132202][ T1220] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 81.144388][ T1220] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 81.153929][ T1220] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 81.161911][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 81.276110][ T4301] [ 81.278489][ T4301] ====================================================== [ 81.285523][ T4301] WARNING: possible circular locking dependency detected [ 81.292572][ T4301] syzkaller #0 Not tainted [ 81.297005][ T4301] ------------------------------------------------------ [ 81.304039][ T4301] syz.0.17/4301 is trying to acquire lock: [ 81.309858][ T4301] ffff888020330c28 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}, at: __flush_work+0xfa/0x210 [ 81.320954][ T4301] [ 81.320954][ T4301] but task is already holding lock: [ 81.328338][ T4301] ffffffff8d6c51a8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x18b/0x560 [ 81.338045][ T4301] [ 81.338045][ T4301] which lock already depends on the new lock. [ 81.338045][ T4301] [ 81.348466][ T4301] [ 81.348466][ T4301] the existing dependency chain (in reverse order) is: [ 81.357500][ T4301] [ 81.357500][ T4301] -> #4 (rfkill_global_mutex){+.+.}-{3:3}: [ 81.365518][ T4301] __mutex_lock_common+0x1e3/0x2400 [ 81.371267][ T4301] mutex_lock_nested+0x17/0x20 [ 81.376586][ T4301] rfkill_register+0x33/0x8a0 [ 81.381811][ T4301] hci_register_dev+0x452/0x970 [ 81.387242][ T4301] vhci_create_device+0x32c/0x5c0 [ 81.392824][ T4301] vhci_write+0x391/0x450 [ 81.397699][ T4301] vfs_write+0x745/0xd60 [ 81.402492][ T4301] ksys_write+0x152/0x260 [ 81.407364][ T4301] do_syscall_64+0x4c/0xa0 [ 81.412323][ T4301] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 81.418760][ T4301] [ 81.418760][ T4301] -> #3 (&data->open_mutex){+.+.}-{3:3}: [ 81.426603][ T4301] __mutex_lock_common+0x1e3/0x2400 [ 81.432357][ T4301] mutex_lock_nested+0x17/0x20 [ 81.437664][ T4301] vhci_send_frame+0x88/0x100 [ 81.442881][ T4301] hci_send_frame+0x1a9/0x2e0 [ 81.448101][ T4301] hci_tx_work+0x9f9/0x1710 [ 81.453313][ T4301] process_one_work+0x85f/0x1010 [ 81.458794][ T4301] worker_thread+0xaa6/0x1290 [ 81.464023][ T4301] kthread+0x436/0x520 [ 81.468645][ T4301] ret_from_fork+0x1f/0x30 [ 81.473666][ T4301] [ 81.473666][ T4301] -> #2 ((work_completion)(&hdev->tx_work)){+.+.}-{0:0}: [ 81.482925][ T4301] __flush_work+0x116/0x210 [ 81.487977][ T4301] hci_dev_do_close+0x1e7/0x1030 [ 81.493467][ T4301] hci_unregister_dev+0x2d7/0x580 [ 81.499046][ T4301] vhci_release+0x73/0xc0 [ 81.503927][ T4301] __fput+0x234/0x930 [ 81.508455][ T4301] task_work_run+0x125/0x1a0 [ 81.513594][ T4301] do_exit+0x626/0x20c0 [ 81.518311][ T4301] do_group_exit+0x12e/0x300 [ 81.523453][ T4301] get_signal+0x6ca/0x12c0 [ 81.528433][ T4301] arch_do_signal_or_restart+0xe7/0x12c0 [ 81.534610][ T4301] exit_to_user_mode_loop+0x9e/0x130 [ 81.540451][ T4301] exit_to_user_mode_prepare+0xee/0x180 [ 81.546541][ T4301] syscall_exit_to_user_mode+0x16/0x40 [ 81.552557][ T4301] do_syscall_64+0x58/0xa0 [ 81.557563][ T4301] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 81.564053][ T4301] [ 81.564053][ T4301] -> #1 (&hdev->req_lock){+.+.}-{3:3}: [ 81.571718][ T4301] __mutex_lock_common+0x1e3/0x2400 [ 81.577472][ T4301] mutex_lock_nested+0x17/0x20 [ 81.582780][ T4301] bg_scan_update+0x44/0x3b0 [ 81.587946][ T4301] process_one_work+0x85f/0x1010 [ 81.593441][ T4301] worker_thread+0xaa6/0x1290 [ 81.598665][ T4301] kthread+0x436/0x520 [ 81.603293][ T4301] ret_from_fork+0x1f/0x30 [ 81.608289][ T4301] [ 81.608289][ T4301] -> #0 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}: [ 81.618164][ T4301] __lock_acquire+0x2c42/0x7d10 [ 81.623571][ T4301] lock_acquire+0x19e/0x400 [ 81.628678][ T4301] __flush_work+0x116/0x210 [ 81.633738][ T4301] __cancel_work_timer+0x3f4/0x560 [ 81.639388][ T4301] hci_request_cancel_all+0xcc/0x300 [ 81.645217][ T4301] hci_dev_do_close+0x4e/0x1030 [ 81.650619][ T4301] hci_rfkill_set_block+0x10a/0x190 [ 81.656363][ T4301] rfkill_set_block+0x1c6/0x420 [ 81.661757][ T4301] rfkill_fop_write+0x452/0x560 [ 81.667148][ T4301] vfs_write+0x30b/0xd60 [ 81.671941][ T4301] ksys_write+0x152/0x260 [ 81.676814][ T4301] do_syscall_64+0x4c/0xa0 [ 81.681777][ T4301] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 81.688212][ T4301] [ 81.688212][ T4301] other info that might help us debug this: [ 81.688212][ T4301] [ 81.698463][ T4301] Chain exists of: [ 81.698463][ T4301] (work_completion)(&hdev->bg_scan_update) --> &data->open_mutex --> rfkill_global_mutex [ 81.698463][ T4301] [ 81.714252][ T4301] Possible unsafe locking scenario: [ 81.714252][ T4301] [ 81.721727][ T4301] CPU0 CPU1 [ 81.727109][ T4301] ---- ---- [ 81.732486][ T4301] lock(rfkill_global_mutex); [ 81.737278][ T4301] lock(&data->open_mutex); [ 81.744416][ T4301] lock(rfkill_global_mutex); [ 81.751729][ T4301] lock((work_completion)(&hdev->bg_scan_update)); [ 81.758338][ T4301] [ 81.758338][ T4301] *** DEADLOCK *** [ 81.758338][ T4301] [ 81.766491][ T4301] 1 lock held by syz.0.17/4301: [ 81.771478][ T4301] #0: ffffffff8d6c51a8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x18b/0x560 [ 81.781626][ T4301] [ 81.781626][ T4301] stack backtrace: [ 81.787544][ T4301] CPU: 1 PID: 4301 Comm: syz.0.17 Not tainted syzkaller #0 [ 81.794778][ T4301] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 81.804859][ T4301] Call Trace: [ 81.808163][ T4301] [ 81.811123][ T4301] dump_stack_lvl+0x188/0x250 [ 81.815836][ T4301] ? load_image+0x400/0x400 [ 81.820365][ T4301] ? show_regs_print_info+0x20/0x20 [ 81.825592][ T4301] ? print_circular_bug+0x12b/0x1a0 [ 81.830825][ T4301] check_noncircular+0x296/0x330 [ 81.835790][ T4301] ? look_up_lock_class+0x71/0x110 [ 81.840928][ T4301] ? add_chain_block+0x940/0x940 [ 81.845888][ T4301] ? lockdep_lock+0xf1/0x1f0 [ 81.850513][ T4301] ? __lock_acquire+0x12e8/0x7d10 [ 81.855564][ T4301] ? mark_lock+0x94/0x320 [ 81.859910][ T4301] __lock_acquire+0x2c42/0x7d10 [ 81.864795][ T4301] ? verify_lock_unused+0x140/0x140 [ 81.870020][ T4301] ? verify_lock_unused+0x140/0x140 [ 81.875243][ T4301] ? mark_lock+0x94/0x320 [ 81.879609][ T4301] lock_acquire+0x19e/0x400 [ 81.884138][ T4301] ? __flush_work+0xfa/0x210 [ 81.888757][ T4301] ? __lock_acquire+0x7d10/0x7d10 [ 81.893800][ T4301] ? read_lock_is_recursive+0x10/0x10 [ 81.899200][ T4301] ? start_flush_work+0x776/0x820 [ 81.904287][ T4301] __flush_work+0x116/0x210 [ 81.908814][ T4301] ? __flush_work+0xfa/0x210 [ 81.913425][ T4301] ? flush_work+0x20/0x20 [ 81.917774][ T4301] ? try_to_grab_pending+0xfa/0x7f0 [ 81.922994][ T4301] ? mark_lock+0x94/0x320 [ 81.927348][ T4301] ? lockdep_hardirqs_on_prepare+0x409/0x770 [ 81.933382][ T4301] ? lock_chain_count+0x20/0x20 [ 81.938285][ T4301] ? mark_lock+0x94/0x320 [ 81.942630][ T4301] ? __cancel_work_timer+0x36a/0x560 [ 81.947947][ T4301] __cancel_work_timer+0x3f4/0x560 [ 81.953082][ T4301] ? cancel_work_sync+0x20/0x20 [ 81.957951][ T4301] ? __cancel_work+0x1f9/0x2e0 [ 81.962727][ T4301] ? lockdep_hardirqs_on+0x94/0x140 [ 81.967950][ T4301] ? __cancel_work+0x27b/0x2e0 [ 81.972727][ T4301] ? cancel_work+0x20/0x20 [ 81.977161][ T4301] ? lock_chain_count+0x20/0x20 [ 81.982042][ T4301] hci_request_cancel_all+0xcc/0x300 [ 81.987358][ T4301] hci_dev_do_close+0x4e/0x1030 [ 81.992227][ T4301] ? _raw_spin_unlock_irqrestore+0xc1/0x120 [ 81.998154][ T4301] ? _raw_spin_unlock+0x40/0x40 [ 82.003025][ T4301] hci_rfkill_set_block+0x10a/0x190 [ 82.008262][ T4301] ? rcu_lock_release+0x20/0x20 [ 82.013139][ T4301] rfkill_set_block+0x1c6/0x420 [ 82.018017][ T4301] rfkill_fop_write+0x452/0x560 [ 82.022988][ T4301] ? rfkill_fop_read+0x4d0/0x4d0 [ 82.027951][ T4301] ? common_file_perm+0x110/0x1c0 [ 82.033000][ T4301] ? fsnotify_perm+0x5d/0x560 [ 82.037708][ T4301] ? security_file_permission+0x75/0xa0 [ 82.043273][ T4301] ? rfkill_fop_read+0x4d0/0x4d0 [ 82.048247][ T4301] vfs_write+0x30b/0xd60 [ 82.052517][ T4301] ? file_end_write+0x250/0x250 [ 82.057392][ T4301] ? __context_tracking_exit+0x4c/0x80 [ 82.062884][ T4301] ? __lock_acquire+0x7d10/0x7d10 [ 82.067943][ T4301] ? __fdget_pos+0x1e2/0x370 [ 82.072559][ T4301] ksys_write+0x152/0x260 [ 82.076925][ T4301] ? __ia32_sys_read+0x80/0x80 [ 82.081721][ T4301] ? lockdep_hardirqs_on+0x94/0x140 [ 82.086955][ T4301] do_syscall_64+0x4c/0xa0 [ 82.091401][ T4301] ? clear_bhb_loop+0x30/0x80 [ 82.096102][ T4301] ? clear_bhb_loop+0x30/0x80 [ 82.100805][ T4301] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 82.106732][ T4301] RIP: 0033:0x7f685090f819 [ 82.111177][ T4301] 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 [ 82.130808][ T4301] RSP: 002b:00007ffd1d3340b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 82.139251][ T4301] RAX: ffffffffffffffda RBX: 00007f6850b88fa0 RCX: 00007f685090f819 [ 82.147263][ T4301] RDX: 0000000000000008 RSI: 0000200000000040 RDI: 0000000000000003 [ 82.155257][ T4301] RBP: 00007f68509a5c91 R08: 0000000000000000 R09: 0000000000000000 [ 82.163254][ T4301] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 82.171254][ T4301] R13: 00007f6850b88fac R14: 00007f6850b88fa0 R15: 00007f6850b88fa0 [ 82.179257][ T4301]