Warning: Permanently added '10.128.1.112' (ED25519) to the list of known hosts. 2026/01/01 04:54:54 parsed 1 programs [ 65.512736][ T4189] cgroup: Unknown subsys name 'net' [ 65.623952][ T4189] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size = 127995904 bytes [ 67.096362][ T4189] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k FS [ 68.965016][ T4207] chnl_net:caif_netlink_parms(): no params data found [ 69.018611][ T4207] bridge0: port 1(bridge_slave_0) entered blocking state [ 69.026443][ T4207] bridge0: port 1(bridge_slave_0) entered disabled state [ 69.034616][ T4207] device bridge_slave_0 entered promiscuous mode [ 69.048608][ T4207] bridge0: port 2(bridge_slave_1) entered blocking state [ 69.055877][ T4207] bridge0: port 2(bridge_slave_1) entered disabled state [ 69.064008][ T4207] device bridge_slave_1 entered promiscuous mode [ 69.087111][ T4207] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 69.101376][ T4207] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 69.127107][ T4207] team0: Port device team_slave_0 added [ 69.134821][ T4207] team0: Port device team_slave_1 added [ 69.156900][ T4207] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 69.163970][ T4207] 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. [ 69.190125][ T4207] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 69.202908][ T4207] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 69.210496][ T4207] 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. [ 69.236510][ T4207] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 69.271418][ T4207] device hsr_slave_0 entered promiscuous mode [ 69.278285][ T4207] device hsr_slave_1 entered promiscuous mode [ 69.393134][ T4207] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 69.405589][ T4207] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 69.416657][ T4207] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 69.428142][ T4207] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 69.461235][ T4207] bridge0: port 2(bridge_slave_1) entered blocking state [ 69.468571][ T4207] bridge0: port 2(bridge_slave_1) entered forwarding state [ 69.476908][ T4207] bridge0: port 1(bridge_slave_0) entered blocking state [ 69.484063][ T4207] bridge0: port 1(bridge_slave_0) entered forwarding state [ 69.547967][ T4207] 8021q: adding VLAN 0 to HW filter on device bond0 [ 69.566030][ T1296] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 69.579143][ T1296] bridge0: port 1(bridge_slave_0) entered disabled state [ 69.588593][ T1296] bridge0: port 2(bridge_slave_1) entered disabled state [ 69.598910][ T1296] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 69.616118][ T4207] 8021q: adding VLAN 0 to HW filter on device team0 [ 69.628762][ T1296] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 69.640625][ T1296] bridge0: port 1(bridge_slave_0) entered blocking state [ 69.647791][ T1296] bridge0: port 1(bridge_slave_0) entered forwarding state [ 69.670441][ T1296] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 69.680496][ T1296] bridge0: port 2(bridge_slave_1) entered blocking state [ 69.687658][ T1296] bridge0: port 2(bridge_slave_1) entered forwarding state [ 69.708728][ T1296] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 69.727652][ T1296] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 69.737431][ T1296] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 69.746933][ T1296] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 69.762157][ T4207] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 69.774828][ T4207] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 69.784891][ T1296] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 69.918729][ T1296] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 69.930550][ T1296] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 69.945477][ T4207] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 69.970359][ T1296] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 69.980223][ T1296] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 70.002280][ T1296] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 70.021129][ T1296] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 70.033349][ T4207] device veth0_vlan entered promiscuous mode [ 70.042026][ T1296] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 70.050736][ T1296] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 70.064731][ T4207] device veth1_vlan entered promiscuous mode [ 70.092020][ T1296] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 70.101917][ T1296] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 70.111483][ T1296] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 70.121391][ T1296] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 70.132493][ T4207] device veth0_macvtap entered promiscuous mode [ 70.145113][ T4207] device veth1_macvtap entered promiscuous mode [ 70.166077][ T4207] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 70.174206][ T1296] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 70.182957][ T1296] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 70.196838][ T1296] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 70.210665][ T1296] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 70.223830][ T4207] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 70.235581][ T1296] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 70.245933][ T1296] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 70.256017][ T4207] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 70.265023][ T4207] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 70.274763][ T4207] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 70.285021][ T4207] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 70.387453][ T4207] syz-executor (4207) used greatest stack depth: 20288 bytes left [ 71.088149][ T144] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 71.103821][ T1296] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 71.111851][ T1296] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 71.123180][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 71.149883][ T1296] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 71.157992][ T1296] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 71.166802][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 71.446448][ T1423] ieee802154 phy0 wpan0: encryption failed: -22 [ 71.453044][ T1423] ieee802154 phy1 wpan1: encryption failed: -22 2026/01/01 04:55:03 executed programs: 0 [ 72.600949][ T4282] chnl_net:caif_netlink_parms(): no params data found [ 72.646501][ T4282] bridge0: port 1(bridge_slave_0) entered blocking state [ 72.653715][ T4282] bridge0: port 1(bridge_slave_0) entered disabled state [ 72.661573][ T4282] device bridge_slave_0 entered promiscuous mode [ 72.670187][ T4282] bridge0: port 2(bridge_slave_1) entered blocking state [ 72.677621][ T4282] bridge0: port 2(bridge_slave_1) entered disabled state [ 72.685874][ T4282] device bridge_slave_1 entered promiscuous mode [ 72.708258][ T4282] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 72.719822][ T4282] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 72.747061][ T4282] team0: Port device team_slave_0 added [ 72.756129][ T4282] team0: Port device team_slave_1 added [ 72.775882][ T4282] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 72.782986][ T4282] batman_adv: batadv0: The MTU of interface batadv_slave_0 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. [ 72.809232][ T4282] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 72.822004][ T4282] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 72.829416][ T4282] 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. [ 72.856211][ T4282] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 72.888849][ T4282] device hsr_slave_0 entered promiscuous mode [ 72.895835][ T4282] device hsr_slave_1 entered promiscuous mode [ 72.902833][ T4282] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 72.911018][ T4282] Cannot create hsr debugfs directory [ 73.791718][ T144] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 74.575026][ T2241] Bluetooth: hci0: command 0x0409 tx timeout [ 75.689740][ T144] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 75.771731][ T144] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 76.643731][ T4249] Bluetooth: hci0: command 0x041b tx timeout [ 76.699461][ T4282] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 76.709352][ T4282] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 76.720413][ T4282] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 76.746357][ T4282] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 76.818530][ T4282] 8021q: adding VLAN 0 to HW filter on device bond0 [ 76.830588][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 76.839069][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 76.850360][ T4282] 8021q: adding VLAN 0 to HW filter on device team0 [ 76.876099][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 76.886351][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 76.895346][ T154] bridge0: port 1(bridge_slave_0) entered blocking state [ 76.902458][ T154] bridge0: port 1(bridge_slave_0) entered forwarding state [ 76.911276][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 76.935846][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 76.946125][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 76.954889][ T154] bridge0: port 2(bridge_slave_1) entered blocking state [ 76.962015][ T154] bridge0: port 2(bridge_slave_1) entered forwarding state [ 76.973184][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 76.997397][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 77.006988][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 77.016026][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 77.025094][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 77.034038][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 77.042629][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 77.051763][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 77.060331][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 77.068939][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 77.077784][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 77.087896][ T4282] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 77.101575][ T144] device hsr_slave_0 left promiscuous mode [ 77.108375][ T144] device hsr_slave_1 left promiscuous mode [ 77.115832][ T144] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 77.124912][ T144] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 77.133123][ T144] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 77.141099][ T144] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 77.149321][ T144] device bridge_slave_1 left promiscuous mode [ 77.156623][ T144] bridge0: port 2(bridge_slave_1) entered disabled state [ 77.170352][ T144] device bridge_slave_0 left promiscuous mode [ 77.176925][ T144] bridge0: port 1(bridge_slave_0) entered disabled state [ 77.195517][ T144] device veth1_macvtap left promiscuous mode [ 77.201763][ T144] device veth0_macvtap left promiscuous mode [ 77.210021][ T144] device veth1_vlan left promiscuous mode [ 77.217634][ T144] device veth0_vlan left promiscuous mode [ 77.388750][ T144] team0 (unregistering): Port device team_slave_1 removed [ 77.402783][ T144] team0 (unregistering): Port device team_slave_0 removed [ 77.419430][ T144] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 77.434448][ T144] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 77.494533][ T144] bond0 (unregistering): Released all slaves [ 77.638498][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 77.646620][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 77.663120][ T4282] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 77.685914][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 77.697001][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 77.720488][ T4282] device veth0_vlan entered promiscuous mode [ 77.728752][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 77.738021][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 77.751874][ T4282] device veth1_vlan entered promiscuous mode [ 77.762627][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 77.772184][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 77.780427][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 77.804107][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 77.812477][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 77.821447][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 77.833132][ T4282] device veth0_macvtap entered promiscuous mode [ 77.844061][ T4282] device veth1_macvtap entered promiscuous mode [ 77.851894][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 77.861204][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 77.890536][ T4282] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 77.898537][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 77.908539][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 77.920881][ T4282] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 77.930294][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 77.939667][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 77.952087][ T4282] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 77.962948][ T4282] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 77.972558][ T4282] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 77.988015][ T4282] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 78.066833][ T154] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 78.081014][ T154] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 78.101770][ T1296] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 78.109584][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 78.113786][ T1296] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 78.128223][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 78.310876][ T4338] [ 78.313274][ T4338] ====================================================== [ 78.320400][ T4338] WARNING: possible circular locking dependency detected [ 78.327453][ T4338] syzkaller #0 Not tainted [ 78.331887][ T4338] ------------------------------------------------------ [ 78.338931][ T4338] syz.0.17/4338 is trying to acquire lock: [ 78.344764][ T4338] ffff88802afdcc28 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}, at: __flush_work+0xc1/0x1b0 [ 78.355877][ T4338] [ 78.355877][ T4338] but task is already holding lock: [ 78.363275][ T4338] ffffffff8d4ba7e8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x19e/0x560 [ 78.373096][ T4338] [ 78.373096][ T4338] which lock already depends on the new lock. [ 78.373096][ T4338] [ 78.383529][ T4338] [ 78.383529][ T4338] the existing dependency chain (in reverse order) is: [ 78.392566][ T4338] [ 78.392566][ T4338] -> #4 (rfkill_global_mutex){+.+.}-{3:3}: [ 78.400598][ T4338] __mutex_lock_common+0x1eb/0x2390 [ 78.406353][ T4338] mutex_lock_nested+0x17/0x20 [ 78.411665][ T4338] rfkill_register+0x33/0x8a0 [ 78.416971][ T4338] hci_register_dev+0x452/0x970 [ 78.422365][ T4338] vhci_create_device+0x32c/0x5c0 [ 78.427935][ T4338] vhci_write+0x391/0x450 [ 78.432813][ T4338] vfs_write+0x712/0xd00 [ 78.437740][ T4338] ksys_write+0x14d/0x250 [ 78.442612][ T4338] do_syscall_64+0x4c/0xa0 [ 78.447572][ T4338] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 78.454012][ T4338] [ 78.454012][ T4338] -> #3 (&data->open_mutex){+.+.}-{3:3}: [ 78.461867][ T4338] __mutex_lock_common+0x1eb/0x2390 [ 78.467623][ T4338] mutex_lock_nested+0x17/0x20 [ 78.472933][ T4338] vhci_send_frame+0x88/0x100 [ 78.478236][ T4338] hci_send_frame+0x1a9/0x2e0 [ 78.483452][ T4338] hci_tx_work+0x9f9/0x1710 [ 78.488546][ T4338] process_one_work+0x863/0x1000 [ 78.494074][ T4338] worker_thread+0xaa8/0x12a0 [ 78.499300][ T4338] kthread+0x436/0x520 [ 78.503921][ T4338] ret_from_fork+0x1f/0x30 [ 78.508892][ T4338] [ 78.508892][ T4338] -> #2 ((work_completion)(&hdev->tx_work)){+.+.}-{0:0}: [ 78.518126][ T4338] __flush_work+0xdd/0x1b0 [ 78.523088][ T4338] hci_dev_do_close+0x1e7/0x1030 [ 78.528657][ T4338] hci_unregister_dev+0x2d7/0x580 [ 78.534222][ T4338] vhci_release+0x73/0xc0 [ 78.539088][ T4338] __fput+0x234/0x930 [ 78.543615][ T4338] task_work_run+0x125/0x1a0 [ 78.548757][ T4338] do_exit+0x61e/0x20a0 [ 78.553459][ T4338] do_group_exit+0x12e/0x300 [ 78.558593][ T4338] get_signal+0x6ca/0x12c0 [ 78.563545][ T4338] arch_do_signal_or_restart+0xc1/0x1300 [ 78.569722][ T4338] exit_to_user_mode_loop+0x9e/0x130 [ 78.575570][ T4338] exit_to_user_mode_prepare+0xee/0x180 [ 78.581702][ T4338] syscall_exit_to_user_mode+0x16/0x40 [ 78.587925][ T4338] do_syscall_64+0x58/0xa0 [ 78.592897][ T4338] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 78.599336][ T4338] [ 78.599336][ T4338] -> #1 (&hdev->req_lock){+.+.}-{3:3}: [ 78.607014][ T4338] __mutex_lock_common+0x1eb/0x2390 [ 78.612765][ T4338] mutex_lock_nested+0x17/0x20 [ 78.618068][ T4338] bg_scan_update+0x44/0x3b0 [ 78.623208][ T4338] process_one_work+0x863/0x1000 [ 78.628702][ T4338] worker_thread+0xaa8/0x12a0 [ 78.633922][ T4338] kthread+0x436/0x520 [ 78.638534][ T4338] ret_from_fork+0x1f/0x30 [ 78.643635][ T4338] [ 78.643635][ T4338] -> #0 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}: [ 78.653599][ T4338] __lock_acquire+0x2c33/0x7c60 [ 78.659013][ T4338] lock_acquire+0x197/0x3f0 [ 78.664062][ T4338] __flush_work+0xdd/0x1b0 [ 78.669029][ T4338] __cancel_work_timer+0x3ac/0x520 [ 78.674688][ T4338] hci_request_cancel_all+0xcc/0x300 [ 78.680646][ T4338] hci_dev_do_close+0x4e/0x1030 [ 78.686050][ T4338] hci_rfkill_set_block+0x10a/0x190 [ 78.691789][ T4338] rfkill_set_block+0x1c6/0x420 [ 78.697175][ T4338] rfkill_fop_write+0x458/0x560 [ 78.702570][ T4338] vfs_write+0x300/0xd00 [ 78.707352][ T4338] ksys_write+0x14d/0x250 [ 78.712223][ T4338] do_syscall_64+0x4c/0xa0 [ 78.717188][ T4338] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 78.723639][ T4338] [ 78.723639][ T4338] other info that might help us debug this: [ 78.723639][ T4338] [ 78.733923][ T4338] Chain exists of: [ 78.733923][ T4338] (work_completion)(&hdev->bg_scan_update) --> &data->open_mutex --> rfkill_global_mutex [ 78.733923][ T4338] [ 78.749713][ T4338] Possible unsafe locking scenario: [ 78.749713][ T4338] [ 78.757573][ T4338] CPU0 CPU1 [ 78.763112][ T4338] ---- ---- [ 78.768511][ T4338] lock(rfkill_global_mutex); [ 78.773308][ T4338] lock(&data->open_mutex); [ 78.780460][ T4338] lock(rfkill_global_mutex); [ 78.787768][ T4338] lock((work_completion)(&hdev->bg_scan_update)); [ 78.794388][ T4338] [ 78.794388][ T4338] *** DEADLOCK *** [ 78.794388][ T4338] [ 78.802558][ T4338] 1 lock held by syz.0.17/4338: [ 78.807427][ T4338] #0: ffffffff8d4ba7e8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x19e/0x560 [ 78.817562][ T4338] [ 78.817562][ T4338] stack backtrace: [ 78.823480][ T4338] CPU: 0 PID: 4338 Comm: syz.0.17 Not tainted syzkaller #0 [ 78.830697][ T4338] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 [ 78.840871][ T4338] Call Trace: [ 78.844173][ T4338] [ 78.847123][ T4338] dump_stack_lvl+0x168/0x230 [ 78.851820][ T4338] ? load_image+0x3b0/0x3b0 [ 78.856363][ T4338] ? show_regs_print_info+0x20/0x20 [ 78.861587][ T4338] ? print_circular_bug+0x12b/0x1a0 [ 78.866813][ T4338] check_noncircular+0x274/0x310 [ 78.871781][ T4338] ? add_chain_block+0x940/0x940 [ 78.876742][ T4338] ? lockdep_lock+0xdc/0x1e0 [ 78.881359][ T4338] ? __lock_acquire+0x12d9/0x7c60 [ 78.886515][ T4338] ? lockdep_lock+0x1e0/0x1e0 [ 78.891228][ T4338] ? mark_lock+0x94/0x320 [ 78.895598][ T4338] __lock_acquire+0x2c33/0x7c60 [ 78.900532][ T4338] ? verify_lock_unused+0x140/0x140 [ 78.905781][ T4338] ? verify_lock_unused+0x140/0x140 [ 78.911043][ T4338] lock_acquire+0x197/0x3f0 [ 78.915590][ T4338] ? __flush_work+0xc1/0x1b0 [ 78.920226][ T4338] ? __lock_acquire+0x7c60/0x7c60 [ 78.925299][ T4338] ? read_lock_is_recursive+0x10/0x10 [ 78.930714][ T4338] ? start_flush_work+0x776/0x820 [ 78.935768][ T4338] ? _raw_spin_unlock_irqrestore+0xaa/0x100 [ 78.941702][ T4338] ? _raw_spin_unlock+0x40/0x40 [ 78.946592][ T4338] __flush_work+0xdd/0x1b0 [ 78.951045][ T4338] ? __flush_work+0xc1/0x1b0 [ 78.955666][ T4338] ? flush_work+0x20/0x20 [ 78.960140][ T4338] ? try_to_grab_pending+0xf3/0x7e0 [ 78.965379][ T4338] ? lockdep_hardirqs_off+0x70/0x100 [ 78.970707][ T4338] ? mark_lock+0x94/0x320 [ 78.975100][ T4338] ? lockdep_hardirqs_on_prepare+0x3fc/0x760 [ 78.981124][ T4338] ? lock_chain_count+0x20/0x20 [ 78.986006][ T4338] ? mark_lock+0x94/0x320 [ 78.990376][ T4338] ? __cancel_work_timer+0x331/0x520 [ 78.995706][ T4338] __cancel_work_timer+0x3ac/0x520 [ 79.000873][ T4338] ? cancel_work_sync+0x20/0x20 [ 79.005830][ T4338] ? __cancel_work+0x1f4/0x2d0 [ 79.010628][ T4338] ? lockdep_hardirqs_on+0x94/0x140 [ 79.015856][ T4338] ? __cancel_work+0x26f/0x2d0 [ 79.020655][ T4338] ? cancel_work+0x20/0x20 [ 79.025106][ T4338] ? lock_chain_count+0x20/0x20 [ 79.030078][ T4338] hci_request_cancel_all+0xcc/0x300 [ 79.035396][ T4338] hci_dev_do_close+0x4e/0x1030 [ 79.040437][ T4338] ? _raw_spin_unlock_irqrestore+0xaa/0x100 [ 79.046371][ T4338] ? _raw_spin_unlock+0x40/0x40 [ 79.051305][ T4338] hci_rfkill_set_block+0x10a/0x190 [ 79.056531][ T4338] ? rcu_lock_release+0x20/0x20 [ 79.061412][ T4338] rfkill_set_block+0x1c6/0x420 [ 79.066286][ T4338] rfkill_fop_write+0x458/0x560 [ 79.071167][ T4338] ? verify_lock_unused+0x140/0x140 [ 79.076388][ T4338] ? rfkill_fop_read+0x4b0/0x4b0 [ 79.081349][ T4338] ? common_file_perm+0xc0/0x1c0 [ 79.086323][ T4338] ? fsnotify_perm+0x5d/0x560 [ 79.091020][ T4338] ? security_file_permission+0x75/0xa0 [ 79.096594][ T4338] ? rfkill_fop_read+0x4b0/0x4b0 [ 79.101662][ T4338] vfs_write+0x300/0xd00 [ 79.105926][ T4338] ? file_end_write+0x250/0x250 [ 79.110812][ T4338] ? __context_tracking_exit+0x4c/0x80 [ 79.116387][ T4338] ? __lock_acquire+0x7c60/0x7c60 [ 79.121550][ T4338] ? __fdget_pos+0x1e2/0x370 [ 79.126168][ T4338] ksys_write+0x14d/0x250 [ 79.130534][ T4338] ? __ia32_sys_read+0x80/0x80 [ 79.135366][ T4338] ? lockdep_hardirqs_on+0x94/0x140 [ 79.140607][ T4338] do_syscall_64+0x4c/0xa0 [ 79.145044][ T4338] ? clear_bhb_loop+0x30/0x80 [ 79.149752][ T4338] ? clear_bhb_loop+0x30/0x80 [ 79.154463][ T4338] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 79.160392][ T4338] RIP: 0033:0x7f8c71dd0749 [ 79.164834][ T4338] Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48 [ 79.184631][ T4338] RSP: 002b:00007ffed9295ad8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 79.193189][ T4338] RAX: ffffffffffffffda RBX: 00007f8c72026fa0 RCX: 00007f8c71dd0749 [ 79.201334][ T4338] RDX: 0000000000000008 RSI: 0000200000000040 RDI: 0000000000000003 [ 79.209332][ T4338] RBP: 00007f8c71e54f91 R08: 0000000000000000 R09: 0000000000000000 [ 79.217323][ T4338] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 79.225310][ T4338] R13: 00007f8c72026fa0 R14: 00007f8c72026fa0 R15: 0000000000000003 [ 79.233308][ T4338] [ 79.239705][ T1107] Bluetooth: hci0: command 0x040f tx timeout