Warning: Permanently added '10.128.1.45' (ED25519) to the list of known hosts. 2026/04/04 17:52:18 parsed 1 programs [ 61.013266][ T4188] cgroup: Unknown subsys name 'net' [ 61.139540][ T4188] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size = 127995904 bytes [ 62.662005][ T4188] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k FS [ 64.580297][ T4209] chnl_net:caif_netlink_parms(): no params data found [ 64.623649][ T4209] bridge0: port 1(bridge_slave_0) entered blocking state [ 64.630853][ T4209] bridge0: port 1(bridge_slave_0) entered disabled state [ 64.639089][ T4209] device bridge_slave_0 entered promiscuous mode [ 64.648821][ T4209] bridge0: port 2(bridge_slave_1) entered blocking state [ 64.655964][ T4209] bridge0: port 2(bridge_slave_1) entered disabled state [ 64.664306][ T4209] device bridge_slave_1 entered promiscuous mode [ 64.689586][ T4209] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 64.700921][ T4209] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 64.721757][ T4209] team0: Port device team_slave_0 added [ 64.731605][ T4209] team0: Port device team_slave_1 added [ 64.748235][ T4209] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 64.755322][ T4209] 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. [ 64.782047][ T4209] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 64.796708][ T4209] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 64.803882][ T4209] 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. [ 64.830336][ T4209] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 64.858848][ T4209] device hsr_slave_0 entered promiscuous mode [ 64.866216][ T4209] device hsr_slave_1 entered promiscuous mode [ 64.958552][ T4209] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 64.968847][ T4209] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 64.978766][ T4209] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 64.987953][ T4209] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 65.019460][ T4209] bridge0: port 2(bridge_slave_1) entered blocking state [ 65.026748][ T4209] bridge0: port 2(bridge_slave_1) entered forwarding state [ 65.034728][ T4209] bridge0: port 1(bridge_slave_0) entered blocking state [ 65.041824][ T4209] bridge0: port 1(bridge_slave_0) entered forwarding state [ 65.110505][ T4209] 8021q: adding VLAN 0 to HW filter on device bond0 [ 65.127340][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 65.140658][ T144] bridge0: port 1(bridge_slave_0) entered disabled state [ 65.149920][ T144] bridge0: port 2(bridge_slave_1) entered disabled state [ 65.158440][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 65.174772][ T4209] 8021q: adding VLAN 0 to HW filter on device team0 [ 65.191084][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 65.203617][ T144] bridge0: port 1(bridge_slave_0) entered blocking state [ 65.210888][ T144] bridge0: port 1(bridge_slave_0) entered forwarding state [ 65.234942][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 65.245733][ T144] bridge0: port 2(bridge_slave_1) entered blocking state [ 65.252815][ T144] bridge0: port 2(bridge_slave_1) entered forwarding state [ 65.277318][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 65.287037][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 65.296064][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 65.305983][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 65.326610][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 65.338198][ T4209] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 65.483747][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 65.491246][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 65.508090][ T4209] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 65.539862][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 65.571059][ T156] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 65.580625][ T156] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 65.594424][ T4209] device veth0_vlan entered promiscuous mode [ 65.606231][ T156] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 65.615769][ T156] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 65.629172][ T4209] device veth1_vlan entered promiscuous mode [ 65.658041][ T156] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 65.667746][ T156] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 65.677026][ T156] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 65.686756][ T156] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 65.701014][ T4209] device veth0_macvtap entered promiscuous mode [ 65.712327][ T4209] device veth1_macvtap entered promiscuous mode [ 65.734635][ T4209] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 65.742186][ T156] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 65.752471][ T156] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 65.760999][ T156] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 65.771090][ T156] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 65.785198][ T4209] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 65.794485][ T156] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 65.805825][ T156] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 65.818204][ T4209] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 65.833050][ T4209] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 65.842208][ T4209] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 65.851723][ T4209] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 66.414449][ T145] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 66.608720][ T144] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 66.616874][ T144] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 66.632401][ T156] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 66.653626][ T9] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 66.661506][ T9] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 66.670225][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2026/04/04 17:52:27 executed programs: 0 [ 68.184751][ T4279] chnl_net:caif_netlink_parms(): no params data found [ 68.224667][ T4279] bridge0: port 1(bridge_slave_0) entered blocking state [ 68.232264][ T4279] bridge0: port 1(bridge_slave_0) entered disabled state [ 68.241268][ T4279] device bridge_slave_0 entered promiscuous mode [ 68.249291][ T4279] bridge0: port 2(bridge_slave_1) entered blocking state [ 68.256663][ T4279] bridge0: port 2(bridge_slave_1) entered disabled state [ 68.265018][ T4279] device bridge_slave_1 entered promiscuous mode [ 68.284955][ T4279] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 68.296765][ T4279] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 68.317942][ T4279] team0: Port device team_slave_0 added [ 68.326353][ T4279] team0: Port device team_slave_1 added [ 68.343572][ T4279] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 68.350531][ T4279] 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. [ 68.377103][ T4279] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 68.388952][ T4279] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 68.396315][ T4279] 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. [ 68.422496][ T4279] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 68.452522][ T4279] device hsr_slave_0 entered promiscuous mode [ 68.459376][ T4279] device hsr_slave_1 entered promiscuous mode [ 68.466368][ T4279] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 68.474822][ T4279] Cannot create hsr debugfs directory [ 68.840011][ T145] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 70.143997][ T13] Bluetooth: hci0: command 0x0409 tx timeout [ 71.138037][ T145] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 71.191232][ T145] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 71.357217][ T1423] ieee802154 phy0 wpan0: encryption failed: -22 [ 71.364022][ T1423] ieee802154 phy1 wpan1: encryption failed: -22 [ 71.997787][ T4279] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 72.018218][ T4279] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 72.028696][ T4279] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 72.037525][ T4279] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 72.097280][ T4279] 8021q: adding VLAN 0 to HW filter on device bond0 [ 72.108793][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 72.117167][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 72.128277][ T4279] 8021q: adding VLAN 0 to HW filter on device team0 [ 72.149991][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 72.159486][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 72.168265][ T144] bridge0: port 1(bridge_slave_0) entered blocking state [ 72.175344][ T144] bridge0: port 1(bridge_slave_0) entered forwarding state [ 72.185520][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 72.206971][ T156] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 72.216037][ T156] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 72.226054][ T156] bridge0: port 2(bridge_slave_1) entered blocking state [ 72.233308][ T156] bridge0: port 2(bridge_slave_1) entered forwarding state [ 72.241025][ T13] Bluetooth: hci0: command 0x041b tx timeout [ 72.252054][ T1239] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 72.261351][ T1239] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 72.270341][ T1239] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 72.279451][ T1239] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 72.288642][ T1239] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 72.304918][ T145] device hsr_slave_0 left promiscuous mode [ 72.311455][ T145] device hsr_slave_1 left promiscuous mode [ 72.318781][ T145] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 72.326637][ T145] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 72.335390][ T145] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 72.342793][ T145] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 72.351819][ T145] device bridge_slave_1 left promiscuous mode [ 72.359287][ T145] bridge0: port 2(bridge_slave_1) entered disabled state [ 72.371925][ T145] device bridge_slave_0 left promiscuous mode [ 72.378919][ T145] bridge0: port 1(bridge_slave_0) entered disabled state [ 72.396758][ T145] device veth1_macvtap left promiscuous mode [ 72.403493][ T145] device veth0_macvtap left promiscuous mode [ 72.409550][ T145] device veth1_vlan left promiscuous mode [ 72.416063][ T145] device veth0_vlan left promiscuous mode [ 72.564101][ T145] team0 (unregistering): Port device team_slave_1 removed [ 72.581374][ T145] team0 (unregistering): Port device team_slave_0 removed [ 72.595667][ T145] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 72.609955][ T145] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 72.666149][ T145] bond0 (unregistering): Released all slaves [ 72.744712][ T156] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 72.754003][ T156] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 72.764841][ T1239] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 72.774484][ T1239] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 72.787699][ T4279] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 72.799616][ T4279] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 72.808105][ T156] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 72.817067][ T156] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 72.925037][ T1239] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 72.932489][ T1239] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 72.949549][ T4279] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 72.972460][ T1239] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 72.981952][ T1239] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 72.998991][ T1239] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 73.007817][ T1239] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 73.017494][ T1239] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 73.025413][ T1239] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 73.037373][ T4279] device veth0_vlan entered promiscuous mode [ 73.050877][ T4279] device veth1_vlan entered promiscuous mode [ 73.068409][ T156] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 73.076756][ T156] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 73.084950][ T156] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 73.093774][ T156] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 73.105571][ T4279] device veth0_macvtap entered promiscuous mode [ 73.121990][ T4279] device veth1_macvtap entered promiscuous mode [ 73.130145][ T156] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 73.138714][ T156] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 73.155933][ T4279] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 73.165781][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 73.175310][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 73.187842][ T4279] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 73.206024][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 73.216548][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 73.228890][ T4279] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 73.238356][ T4279] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 73.249106][ T4279] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 73.258362][ T4279] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 73.334730][ T1239] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 73.342585][ T1239] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 73.364653][ T1239] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 73.388479][ T1239] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 73.397195][ T1239] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 73.406518][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 73.460993][ T4327] [ 73.463367][ T4327] ====================================================== [ 73.470401][ T4327] WARNING: possible circular locking dependency detected [ 73.477793][ T4327] syzkaller #0 Not tainted [ 73.482227][ T4327] ------------------------------------------------------ [ 73.489333][ T4327] syz.0.17/4327 is trying to acquire lock: [ 73.495156][ T4327] ffff888022a3cc28 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}, at: __flush_work+0xfa/0x210 [ 73.506401][ T4327] [ 73.506401][ T4327] but task is already holding lock: [ 73.513776][ T4327] ffffffff8d6c51a8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x18b/0x560 [ 73.523459][ T4327] [ 73.523459][ T4327] which lock already depends on the new lock. [ 73.523459][ T4327] [ 73.533879][ T4327] [ 73.533879][ T4327] the existing dependency chain (in reverse order) is: [ 73.542985][ T4327] [ 73.542985][ T4327] -> #4 (rfkill_global_mutex){+.+.}-{3:3}: [ 73.550996][ T4327] __mutex_lock_common+0x1e3/0x2400 [ 73.556733][ T4327] mutex_lock_nested+0x17/0x20 [ 73.562137][ T4327] rfkill_register+0x33/0x8a0 [ 73.567347][ T4327] hci_register_dev+0x452/0x970 [ 73.572824][ T4327] vhci_create_device+0x32c/0x5c0 [ 73.578380][ T4327] vhci_write+0x391/0x450 [ 73.583326][ T4327] vfs_write+0x745/0xd60 [ 73.588095][ T4327] ksys_write+0x152/0x260 [ 73.592954][ T4327] do_syscall_64+0x4c/0xa0 [ 73.597898][ T4327] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 73.604320][ T4327] [ 73.604320][ T4327] -> #3 (&data->open_mutex){+.+.}-{3:3}: [ 73.612245][ T4327] __mutex_lock_common+0x1e3/0x2400 [ 73.618070][ T4327] mutex_lock_nested+0x17/0x20 [ 73.623369][ T4327] vhci_send_frame+0x88/0x100 [ 73.628569][ T4327] hci_send_frame+0x1a9/0x2e0 [ 73.633762][ T4327] hci_tx_work+0x9f9/0x1710 [ 73.638784][ T4327] process_one_work+0x85f/0x1010 [ 73.644236][ T4327] worker_thread+0xaa6/0x1290 [ 73.649432][ T4327] kthread+0x436/0x520 [ 73.654018][ T4327] ret_from_fork+0x1f/0x30 [ 73.658957][ T4327] [ 73.658957][ T4327] -> #2 ((work_completion)(&hdev->tx_work)){+.+.}-{0:0}: [ 73.668162][ T4327] __flush_work+0x116/0x210 [ 73.673356][ T4327] hci_dev_do_close+0x1e7/0x1030 [ 73.678812][ T4327] hci_unregister_dev+0x2d7/0x580 [ 73.684528][ T4327] vhci_release+0x73/0xc0 [ 73.689375][ T4327] __fput+0x234/0x930 [ 73.693872][ T4327] task_work_run+0x125/0x1a0 [ 73.698984][ T4327] do_exit+0x626/0x20c0 [ 73.703662][ T4327] do_group_exit+0x12e/0x300 [ 73.708855][ T4327] get_signal+0x6ca/0x12c0 [ 73.713894][ T4327] arch_do_signal_or_restart+0xe7/0x12c0 [ 73.720130][ T4327] exit_to_user_mode_loop+0x9e/0x130 [ 73.725932][ T4327] exit_to_user_mode_prepare+0xee/0x180 [ 73.731990][ T4327] syscall_exit_to_user_mode+0x16/0x40 [ 73.737966][ T4327] do_syscall_64+0x58/0xa0 [ 73.742984][ T4327] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 73.749399][ T4327] [ 73.749399][ T4327] -> #1 (&hdev->req_lock){+.+.}-{3:3}: [ 73.757219][ T4327] __mutex_lock_common+0x1e3/0x2400 [ 73.763027][ T4327] mutex_lock_nested+0x17/0x20 [ 73.768745][ T4327] bg_scan_update+0x44/0x3b0 [ 73.773854][ T4327] process_one_work+0x85f/0x1010 [ 73.779311][ T4327] worker_thread+0xaa6/0x1290 [ 73.784526][ T4327] kthread+0x436/0x520 [ 73.789116][ T4327] ret_from_fork+0x1f/0x30 [ 73.794048][ T4327] [ 73.794048][ T4327] -> #0 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}: [ 73.803941][ T4327] __lock_acquire+0x2c42/0x7d10 [ 73.809407][ T4327] lock_acquire+0x19e/0x400 [ 73.814426][ T4327] __flush_work+0x116/0x210 [ 73.819504][ T4327] __cancel_work_timer+0x3f4/0x560 [ 73.825127][ T4327] hci_request_cancel_all+0xcc/0x300 [ 73.831099][ T4327] hci_dev_do_close+0x4e/0x1030 [ 73.836558][ T4327] hci_rfkill_set_block+0x10a/0x190 [ 73.842270][ T4327] rfkill_set_block+0x1c6/0x420 [ 73.847638][ T4327] rfkill_fop_write+0x2e7/0x560 [ 73.853003][ T4327] vfs_write+0x30b/0xd60 [ 73.857777][ T4327] ksys_write+0x152/0x260 [ 73.862708][ T4327] do_syscall_64+0x4c/0xa0 [ 73.867642][ T4327] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 73.874049][ T4327] [ 73.874049][ T4327] other info that might help us debug this: [ 73.874049][ T4327] [ 73.884702][ T4327] Chain exists of: [ 73.884702][ T4327] (work_completion)(&hdev->bg_scan_update) --> &data->open_mutex --> rfkill_global_mutex [ 73.884702][ T4327] [ 73.900428][ T4327] Possible unsafe locking scenario: [ 73.900428][ T4327] [ 73.907872][ T4327] CPU0 CPU1 [ 73.913405][ T4327] ---- ---- [ 73.918862][ T4327] lock(rfkill_global_mutex); [ 73.923618][ T4327] lock(&data->open_mutex); [ 73.930726][ T4327] lock(rfkill_global_mutex); [ 73.938100][ T4327] lock((work_completion)(&hdev->bg_scan_update)); [ 73.944718][ T4327] [ 73.944718][ T4327] *** DEADLOCK *** [ 73.944718][ T4327] [ 73.952981][ T4327] 1 lock held by syz.0.17/4327: [ 73.957830][ T4327] #0: ffffffff8d6c51a8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x18b/0x560 [ 73.967946][ T4327] [ 73.967946][ T4327] stack backtrace: [ 73.975652][ T4327] CPU: 0 PID: 4327 Comm: syz.0.17 Not tainted syzkaller #0 [ 73.982950][ T4327] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026 [ 73.993098][ T4327] Call Trace: [ 73.996480][ T4327] [ 73.999418][ T4327] dump_stack_lvl+0x188/0x250 [ 74.004106][ T4327] ? load_image+0x400/0x400 [ 74.008614][ T4327] ? show_regs_print_info+0x20/0x20 [ 74.013817][ T4327] ? print_circular_bug+0x12b/0x1a0 [ 74.019371][ T4327] check_noncircular+0x296/0x330 [ 74.024342][ T4327] ? look_up_lock_class+0x71/0x110 [ 74.029458][ T4327] ? add_chain_block+0x940/0x940 [ 74.034399][ T4327] ? lockdep_lock+0xf1/0x1f0 [ 74.039005][ T4327] ? __lock_acquire+0x12e8/0x7d10 [ 74.044029][ T4327] ? mark_lock+0x94/0x320 [ 74.048356][ T4327] __lock_acquire+0x2c42/0x7d10 [ 74.053207][ T4327] ? verify_lock_unused+0x140/0x140 [ 74.058559][ T4327] ? mark_lock+0x94/0x320 [ 74.063079][ T4327] ? verify_lock_unused+0x140/0x140 [ 74.068410][ T4327] lock_acquire+0x19e/0x400 [ 74.072941][ T4327] ? __flush_work+0xfa/0x210 [ 74.077549][ T4327] ? __lock_acquire+0x7d10/0x7d10 [ 74.082625][ T4327] ? read_lock_is_recursive+0x10/0x10 [ 74.088007][ T4327] ? start_flush_work+0x776/0x820 [ 74.093028][ T4327] __flush_work+0x116/0x210 [ 74.097619][ T4327] ? __flush_work+0xfa/0x210 [ 74.102211][ T4327] ? flush_work+0x20/0x20 [ 74.106625][ T4327] ? try_to_grab_pending+0xfa/0x7f0 [ 74.111831][ T4327] ? mark_lock+0x94/0x320 [ 74.116239][ T4327] ? lockdep_hardirqs_on_prepare+0x409/0x770 [ 74.122390][ T4327] ? lock_chain_count+0x20/0x20 [ 74.127434][ T4327] ? mark_lock+0x94/0x320 [ 74.131763][ T4327] ? __cancel_work_timer+0x36a/0x560 [ 74.137063][ T4327] __cancel_work_timer+0x3f4/0x560 [ 74.142185][ T4327] ? cancel_work_sync+0x20/0x20 [ 74.147028][ T4327] ? __cancel_work+0x1f9/0x2e0 [ 74.151798][ T4327] ? lockdep_hardirqs_on+0x94/0x140 [ 74.156999][ T4327] ? __cancel_work+0x27b/0x2e0 [ 74.162030][ T4327] ? cancel_work+0x20/0x20 [ 74.166445][ T4327] ? lock_chain_count+0x20/0x20 [ 74.171395][ T4327] hci_request_cancel_all+0xcc/0x300 [ 74.178676][ T4327] hci_dev_do_close+0x4e/0x1030 [ 74.183655][ T4327] ? _raw_spin_unlock_irqrestore+0xc1/0x120 [ 74.189776][ T4327] ? _raw_spin_unlock+0x40/0x40 [ 74.194631][ T4327] hci_rfkill_set_block+0x10a/0x190 [ 74.200004][ T4327] ? rcu_lock_release+0x20/0x20 [ 74.205026][ T4327] rfkill_set_block+0x1c6/0x420 [ 74.210209][ T4327] rfkill_fop_write+0x2e7/0x560 [ 74.215371][ T4327] ? rfkill_fop_read+0x4d0/0x4d0 [ 74.220450][ T4327] ? common_file_perm+0x110/0x1c0 [ 74.225618][ T4327] ? fsnotify_perm+0x5d/0x560 [ 74.230315][ T4327] ? security_file_permission+0x75/0xa0 [ 74.235961][ T4327] ? rfkill_fop_read+0x4d0/0x4d0 [ 74.240999][ T4327] vfs_write+0x30b/0xd60 [ 74.245520][ T4327] ? file_end_write+0x250/0x250 [ 74.250557][ T4327] ? __context_tracking_exit+0x4c/0x80 [ 74.256113][ T4327] ? __lock_acquire+0x7d10/0x7d10 [ 74.261337][ T4327] ? __fdget_pos+0x1e2/0x370 [ 74.265932][ T4327] ksys_write+0x152/0x260 [ 74.270444][ T4327] ? __ia32_sys_read+0x80/0x80 [ 74.275306][ T4327] ? lockdep_hardirqs_on+0x94/0x140 [ 74.280850][ T4327] do_syscall_64+0x4c/0xa0 [ 74.285282][ T4327] ? clear_bhb_loop+0x30/0x80 [ 74.289970][ T4327] ? clear_bhb_loop+0x30/0x80 [ 74.294787][ T4327] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 74.300736][ T4327] RIP: 0033:0x7fb21488a819 [ 74.305240][ T4327] 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 [ 74.325025][ T4327] RSP: 002b:00007ffda0868b08 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 74.333536][ T4327] RAX: ffffffffffffffda RBX: 00007fb214b03fa0 RCX: 00007fb21488a819 [ 74.341607][ T4327] RDX: 0000000000000008 RSI: 0000200000000100 RDI: 0000000000000003 [ 74.349663][ T4327] RBP: 00007fb214920c91 R08: 0000000000000000 R09: 0000000000000000 [ 74.357818][ T4327] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 74.365782][ T4327] R13: 00007fb214b03fac R14: 00007fb214b03fa0 R15: 00007fb214b03fa0 [ 74.373756][ T4327] [ 74.379194][ T13] Bluetooth: hci0: command 0x040f tx timeout