Warning: Permanently added '10.128.1.193' (ED25519) to the list of known hosts. 2026/01/08 16:45:26 parsed 1 programs [ 70.943446][ T4188] cgroup: Unknown subsys name 'net' [ 71.067045][ T4188] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size = 127995904 bytes [ 71.464548][ T1424] ieee802154 phy0 wpan0: encryption failed: -22 [ 71.471155][ T1424] ieee802154 phy1 wpan1: encryption failed: -22 [ 72.693721][ T4188] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k FS [ 75.986444][ T4241] chnl_net:caif_netlink_parms(): no params data found [ 76.055816][ T4241] bridge0: port 1(bridge_slave_0) entered blocking state [ 76.063796][ T4241] bridge0: port 1(bridge_slave_0) entered disabled state [ 76.072553][ T4241] device bridge_slave_0 entered promiscuous mode [ 76.083464][ T4241] bridge0: port 2(bridge_slave_1) entered blocking state [ 76.090760][ T4241] bridge0: port 2(bridge_slave_1) entered disabled state [ 76.099164][ T4241] device bridge_slave_1 entered promiscuous mode [ 76.130579][ T4241] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 76.145087][ T4241] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 76.175360][ T4241] team0: Port device team_slave_0 added [ 76.183557][ T4241] team0: Port device team_slave_1 added [ 76.214236][ T4241] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 76.221398][ 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. [ 76.249165][ T4241] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 76.262820][ T4241] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 76.269817][ 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. [ 76.296250][ T4241] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 76.337550][ T4241] device hsr_slave_0 entered promiscuous mode [ 76.344788][ T4241] device hsr_slave_1 entered promiscuous mode [ 76.486514][ T4241] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 76.564224][ T4241] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 76.582915][ T4241] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 76.605724][ T4241] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 76.642657][ T4241] bridge0: port 2(bridge_slave_1) entered blocking state [ 76.649951][ T4241] bridge0: port 2(bridge_slave_1) entered forwarding state [ 76.658116][ T4241] bridge0: port 1(bridge_slave_0) entered blocking state [ 76.665244][ T4241] bridge0: port 1(bridge_slave_0) entered forwarding state [ 76.714988][ T4241] 8021q: adding VLAN 0 to HW filter on device bond0 [ 76.727745][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 76.739166][ T155] bridge0: port 1(bridge_slave_0) entered disabled state [ 76.750156][ T155] bridge0: port 2(bridge_slave_1) entered disabled state [ 76.759278][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 76.774064][ T4241] 8021q: adding VLAN 0 to HW filter on device team0 [ 76.785486][ T1282] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 76.795313][ T1282] bridge0: port 1(bridge_slave_0) entered blocking state [ 76.802460][ T1282] bridge0: port 1(bridge_slave_0) entered forwarding state [ 76.814347][ T1282] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 76.823551][ T1282] bridge0: port 2(bridge_slave_1) entered blocking state [ 76.830751][ T1282] bridge0: port 2(bridge_slave_1) entered forwarding state [ 76.854088][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 76.863809][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 76.875916][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 76.889022][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 76.902969][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 76.914491][ T4241] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 77.039559][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 77.048109][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 77.087053][ T4241] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 77.106634][ T1282] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 77.116791][ T1282] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 77.152815][ T1282] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 77.161866][ T1282] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 77.171793][ T4241] device veth0_vlan entered promiscuous mode [ 77.178737][ T1282] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 77.187406][ T1282] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 77.203220][ T4241] device veth1_vlan entered promiscuous mode [ 77.238463][ T1282] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 77.246985][ T1282] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 77.256302][ T1282] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 77.265483][ T1282] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 77.276545][ T4241] device veth0_macvtap entered promiscuous mode [ 77.305393][ T4241] device veth1_macvtap entered promiscuous mode [ 77.324257][ T4241] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 77.333148][ T1282] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 77.343264][ T1282] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 77.352079][ T1282] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 77.360986][ T1282] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 77.374168][ T4241] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 77.382548][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 77.391705][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 77.405144][ T4241] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 77.414644][ T4241] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 77.423789][ T4241] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 77.432879][ T4241] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 77.563803][ T4241] syz-executor (4241) used greatest stack depth: 20448 bytes left [ 77.815503][ T154] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 77.830764][ T154] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 77.840812][ T1282] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 77.875711][ T154] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 77.885162][ T154] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 77.895732][ T4278] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2026/01/08 16:45:37 executed programs: 0 [ 79.008963][ T4293] chnl_net:caif_netlink_parms(): no params data found [ 79.062659][ T4293] bridge0: port 1(bridge_slave_0) entered blocking state [ 79.069839][ T4293] bridge0: port 1(bridge_slave_0) entered disabled state [ 79.077916][ T4293] device bridge_slave_0 entered promiscuous mode [ 79.087074][ T4293] bridge0: port 2(bridge_slave_1) entered blocking state [ 79.094651][ T4293] bridge0: port 2(bridge_slave_1) entered disabled state [ 79.103230][ T4293] device bridge_slave_1 entered promiscuous mode [ 79.128054][ T4293] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 79.141567][ T4293] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 79.185095][ T4293] team0: Port device team_slave_0 added [ 79.197248][ T4293] team0: Port device team_slave_1 added [ 79.227000][ T4293] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 79.236561][ T4293] 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. [ 79.265828][ T4293] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 79.278890][ T4293] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 79.288506][ T4293] 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. [ 79.315810][ T4293] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 79.352099][ T4293] device hsr_slave_0 entered promiscuous mode [ 79.359055][ T4293] device hsr_slave_1 entered promiscuous mode [ 79.365748][ T4293] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 79.375793][ T4293] Cannot create hsr debugfs directory [ 79.480862][ T4293] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 80.891542][ T4255] Bluetooth: hci0: command 0x0409 tx timeout [ 82.537461][ T4293] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 82.606336][ T4293] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 82.662395][ T4293] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 82.803317][ T4293] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 82.817809][ T4293] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 82.827415][ T4293] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 82.838288][ T4293] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 82.916661][ T4293] 8021q: adding VLAN 0 to HW filter on device bond0 [ 82.930291][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 82.939130][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 82.950254][ T4293] 8021q: adding VLAN 0 to HW filter on device team0 [ 82.960161][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 82.969452][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 82.978545][ T4249] Bluetooth: hci0: command 0x041b tx timeout [ 82.986547][ T155] bridge0: port 1(bridge_slave_0) entered blocking state [ 82.993689][ T155] bridge0: port 1(bridge_slave_0) entered forwarding state [ 83.001934][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 83.029273][ T4278] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 83.039562][ T4278] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 83.048254][ T4278] bridge0: port 2(bridge_slave_1) entered blocking state [ 83.055384][ T4278] bridge0: port 2(bridge_slave_1) entered forwarding state [ 83.086208][ T4278] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 83.098218][ T4278] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 83.111689][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 83.124527][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 83.134049][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 83.160750][ T4278] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 83.169553][ T4278] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 83.181147][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 83.189815][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 83.215957][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 83.225373][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 83.236521][ T4293] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 83.363615][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 83.372858][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 83.399872][ T9] device hsr_slave_0 left promiscuous mode [ 83.406477][ T9] device hsr_slave_1 left promiscuous mode [ 83.414165][ T9] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 83.421803][ T9] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 83.429985][ T9] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 83.438925][ T9] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 83.447289][ T9] device bridge_slave_1 left promiscuous mode [ 83.454932][ T9] bridge0: port 2(bridge_slave_1) entered disabled state [ 83.468813][ T9] device bridge_slave_0 left promiscuous mode [ 83.476731][ T9] bridge0: port 1(bridge_slave_0) entered disabled state [ 83.494857][ T9] device veth1_macvtap left promiscuous mode [ 83.501403][ T9] device veth0_macvtap left promiscuous mode [ 83.507470][ T9] device veth1_vlan left promiscuous mode [ 83.514369][ T9] device veth0_vlan left promiscuous mode [ 83.685061][ T9] team0 (unregistering): Port device team_slave_1 removed [ 83.698814][ T9] team0 (unregistering): Port device team_slave_0 removed [ 83.716711][ T9] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 83.731184][ T9] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 83.792289][ T9] bond0 (unregistering): Released all slaves [ 83.836931][ T4293] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 83.859633][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 83.869032][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 83.889590][ T4293] device veth0_vlan entered promiscuous mode [ 83.898883][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 83.908133][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 83.917421][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 83.925591][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 83.938252][ T4293] device veth1_vlan entered promiscuous mode [ 83.948052][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 83.988441][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 83.997605][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 84.009455][ T4293] device veth0_macvtap entered promiscuous mode [ 84.019465][ T4293] device veth1_macvtap entered promiscuous mode [ 84.039611][ T4293] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 84.047627][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 84.057761][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 84.066703][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 84.077301][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 84.088944][ T4293] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 84.102595][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 84.112418][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 84.124432][ T4293] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 84.137851][ T4293] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 84.147382][ T4293] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 84.158181][ T4293] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 84.222679][ T1282] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 84.251585][ T1282] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 84.260585][ T155] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 84.268606][ T155] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 84.271311][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 84.286190][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 84.432637][ T4312] [ 84.435030][ T4312] ====================================================== [ 84.442075][ T4312] WARNING: possible circular locking dependency detected [ 84.449133][ T4312] syzkaller #0 Not tainted [ 84.453569][ T4312] ------------------------------------------------------ [ 84.460605][ T4312] syz.0.17/4312 is trying to acquire lock: [ 84.466439][ T4312] ffff888024a6cc28 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}, at: __flush_work+0xc1/0x1b0 [ 84.477550][ T4312] [ 84.477550][ T4312] but task is already holding lock: [ 84.484946][ T4312] ffffffff8d4ba7e8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x19e/0x560 [ 84.494665][ T4312] [ 84.494665][ T4312] which lock already depends on the new lock. [ 84.494665][ T4312] [ 84.505100][ T4312] [ 84.505100][ T4312] the existing dependency chain (in reverse order) is: [ 84.514140][ T4312] [ 84.514140][ T4312] -> #4 (rfkill_global_mutex){+.+.}-{3:3}: [ 84.522172][ T4312] __mutex_lock_common+0x1eb/0x2390 [ 84.527931][ T4312] mutex_lock_nested+0x17/0x20 [ 84.533258][ T4312] rfkill_register+0x33/0x8a0 [ 84.538495][ T4312] hci_register_dev+0x452/0x970 [ 84.544006][ T4312] vhci_create_device+0x32c/0x5c0 [ 84.549593][ T4312] vhci_write+0x391/0x450 [ 84.554494][ T4312] vfs_write+0x712/0xd00 [ 84.559299][ T4312] ksys_write+0x14d/0x250 [ 84.564181][ T4312] do_syscall_64+0x4c/0xa0 [ 84.569158][ T4312] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 84.575806][ T4312] [ 84.575806][ T4312] -> #3 (&data->open_mutex){+.+.}-{3:3}: [ 84.583663][ T4312] __mutex_lock_common+0x1eb/0x2390 [ 84.589426][ T4312] mutex_lock_nested+0x17/0x20 [ 84.594835][ T4312] vhci_send_frame+0x88/0x100 [ 84.600072][ T4312] hci_send_frame+0x1a9/0x2e0 [ 84.605410][ T4312] hci_tx_work+0x9f9/0x1710 [ 84.610469][ T4312] process_one_work+0x863/0x1000 [ 84.615962][ T4312] worker_thread+0xaa8/0x12a0 [ 84.621194][ T4312] kthread+0x436/0x520 [ 84.625825][ T4312] ret_from_fork+0x1f/0x30 [ 84.630886][ T4312] [ 84.630886][ T4312] -> #2 ((work_completion)(&hdev->tx_work)){+.+.}-{0:0}: [ 84.640140][ T4312] __flush_work+0xdd/0x1b0 [ 84.645151][ T4312] hci_dev_do_close+0x1e7/0x1030 [ 84.650653][ T4312] hci_unregister_dev+0x2d7/0x580 [ 84.656244][ T4312] vhci_release+0x73/0xc0 [ 84.661127][ T4312] __fput+0x234/0x930 [ 84.665656][ T4312] task_work_run+0x125/0x1a0 [ 84.670802][ T4312] do_exit+0x61e/0x20a0 [ 84.675519][ T4312] do_group_exit+0x12e/0x300 [ 84.680676][ T4312] get_signal+0x6ca/0x12c0 [ 84.685669][ T4312] arch_do_signal_or_restart+0xc1/0x1300 [ 84.691876][ T4312] exit_to_user_mode_loop+0x9e/0x130 [ 84.697723][ T4312] exit_to_user_mode_prepare+0xee/0x180 [ 84.703829][ T4312] syscall_exit_to_user_mode+0x16/0x40 [ 84.709853][ T4312] do_syscall_64+0x58/0xa0 [ 84.714833][ T4312] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 84.721289][ T4312] [ 84.721289][ T4312] -> #1 (&hdev->req_lock){+.+.}-{3:3}: [ 84.728973][ T4312] __mutex_lock_common+0x1eb/0x2390 [ 84.734741][ T4312] mutex_lock_nested+0x17/0x20 [ 84.740069][ T4312] bg_scan_update+0x44/0x3b0 [ 84.745225][ T4312] process_one_work+0x863/0x1000 [ 84.750726][ T4312] worker_thread+0xaa8/0x12a0 [ 84.755964][ T4312] kthread+0x436/0x520 [ 84.760590][ T4312] ret_from_fork+0x1f/0x30 [ 84.765575][ T4312] [ 84.765575][ T4312] -> #0 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}: [ 84.775581][ T4312] __lock_acquire+0x2c33/0x7c60 [ 84.780993][ T4312] lock_acquire+0x197/0x3f0 [ 84.786051][ T4312] __flush_work+0xdd/0x1b0 [ 84.791043][ T4312] __cancel_work_timer+0x3ac/0x520 [ 84.796746][ T4312] hci_request_cancel_all+0xcc/0x300 [ 84.802594][ T4312] hci_dev_do_close+0x4e/0x1030 [ 84.808101][ T4312] hci_rfkill_set_block+0x10a/0x190 [ 84.813866][ T4312] rfkill_set_block+0x1c6/0x420 [ 84.819276][ T4312] rfkill_fop_write+0x458/0x560 [ 84.824680][ T4312] vfs_write+0x300/0xd00 [ 84.829477][ T4312] ksys_write+0x14d/0x250 [ 84.834359][ T4312] do_syscall_64+0x4c/0xa0 [ 84.839332][ T4312] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 84.845790][ T4312] [ 84.845790][ T4312] other info that might help us debug this: [ 84.845790][ T4312] [ 84.856048][ T4312] Chain exists of: [ 84.856048][ T4312] (work_completion)(&hdev->bg_scan_update) --> &data->open_mutex --> rfkill_global_mutex [ 84.856048][ T4312] [ 84.871820][ T4312] Possible unsafe locking scenario: [ 84.871820][ T4312] [ 84.879302][ T4312] CPU0 CPU1 [ 84.884691][ T4312] ---- ---- [ 84.890099][ T4312] lock(rfkill_global_mutex); [ 84.894903][ T4312] lock(&data->open_mutex); [ 84.902054][ T4312] lock(rfkill_global_mutex); [ 84.909383][ T4312] lock((work_completion)(&hdev->bg_scan_update)); [ 84.916017][ T4312] [ 84.916017][ T4312] *** DEADLOCK *** [ 84.916017][ T4312] [ 84.924195][ T4312] 1 lock held by syz.0.17/4312: [ 84.929074][ T4312] #0: ffffffff8d4ba7e8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x19e/0x560 [ 84.939389][ T4312] [ 84.939389][ T4312] stack backtrace: [ 84.945322][ T4312] CPU: 0 PID: 4312 Comm: syz.0.17 Not tainted syzkaller #0 [ 84.952556][ T4312] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 [ 84.962663][ T4312] Call Trace: [ 84.965966][ T4312] [ 84.968919][ T4312] dump_stack_lvl+0x168/0x230 [ 84.973630][ T4312] ? load_image+0x3b0/0x3b0 [ 84.978176][ T4312] ? show_regs_print_info+0x20/0x20 [ 84.983421][ T4312] ? print_circular_bug+0x12b/0x1a0 [ 84.988653][ T4312] check_noncircular+0x274/0x310 [ 84.993630][ T4312] ? add_chain_block+0x940/0x940 [ 84.998599][ T4312] ? lockdep_lock+0xdc/0x1e0 [ 85.003351][ T4312] ? __lock_acquire+0x12d9/0x7c60 [ 85.008637][ T4312] ? lockdep_lock+0x1e0/0x1e0 [ 85.013357][ T4312] ? mark_lock+0x94/0x320 [ 85.017729][ T4312] __lock_acquire+0x2c33/0x7c60 [ 85.022631][ T4312] ? verify_lock_unused+0x140/0x140 [ 85.027881][ T4312] ? verify_lock_unused+0x140/0x140 [ 85.033136][ T4312] lock_acquire+0x197/0x3f0 [ 85.037671][ T4312] ? __flush_work+0xc1/0x1b0 [ 85.042294][ T4312] ? __lock_acquire+0x7c60/0x7c60 [ 85.047362][ T4312] ? read_lock_is_recursive+0x10/0x10 [ 85.052773][ T4312] ? start_flush_work+0x776/0x820 [ 85.057833][ T4312] ? _raw_spin_unlock_irqrestore+0xaa/0x100 [ 85.063760][ T4312] ? _raw_spin_unlock+0x40/0x40 [ 85.068649][ T4312] __flush_work+0xdd/0x1b0 [ 85.073096][ T4312] ? __flush_work+0xc1/0x1b0 [ 85.077721][ T4312] ? flush_work+0x20/0x20 [ 85.082079][ T4312] ? try_to_grab_pending+0xf3/0x7e0 [ 85.087305][ T4312] ? lockdep_hardirqs_off+0x70/0x100 [ 85.091931][ T4249] Bluetooth: hci0: command 0x040f tx timeout [ 85.092629][ T4312] ? mark_lock+0x94/0x320 [ 85.102965][ T4312] ? lockdep_hardirqs_on_prepare+0x3fc/0x760 [ 85.108984][ T4312] ? lock_chain_count+0x20/0x20 [ 85.113865][ T4312] ? mark_lock+0x94/0x320 [ 85.118243][ T4312] ? __cancel_work_timer+0x331/0x520 [ 85.123556][ T4312] __cancel_work_timer+0x3ac/0x520 [ 85.128707][ T4312] ? cancel_work_sync+0x20/0x20 [ 85.133591][ T4312] ? __cancel_work+0x1f4/0x2d0 [ 85.138554][ T4312] ? lockdep_hardirqs_on+0x94/0x140 [ 85.143805][ T4312] ? __cancel_work+0x26f/0x2d0 [ 85.148614][ T4312] ? cancel_work+0x20/0x20 [ 85.153068][ T4312] ? lock_chain_count+0x20/0x20 [ 85.157968][ T4312] hci_request_cancel_all+0xcc/0x300 [ 85.163420][ T4312] hci_dev_do_close+0x4e/0x1030 [ 85.168318][ T4312] ? _raw_spin_unlock_irqrestore+0xaa/0x100 [ 85.174251][ T4312] ? _raw_spin_unlock+0x40/0x40 [ 85.179150][ T4312] hci_rfkill_set_block+0x10a/0x190 [ 85.184385][ T4312] ? rcu_lock_release+0x20/0x20 [ 85.189279][ T4312] rfkill_set_block+0x1c6/0x420 [ 85.194182][ T4312] rfkill_fop_write+0x458/0x560 [ 85.199134][ T4312] ? verify_lock_unused+0x140/0x140 [ 85.204390][ T4312] ? rfkill_fop_read+0x4b0/0x4b0 [ 85.209380][ T4312] ? common_file_perm+0xc0/0x1c0 [ 85.214357][ T4312] ? fsnotify_perm+0x5d/0x560 [ 85.219083][ T4312] ? security_file_permission+0x75/0xa0 [ 85.224675][ T4312] ? rfkill_fop_read+0x4b0/0x4b0 [ 85.229657][ T4312] vfs_write+0x300/0xd00 [ 85.233935][ T4312] ? file_end_write+0x250/0x250 [ 85.238935][ T4312] ? __context_tracking_exit+0x4c/0x80 [ 85.244448][ T4312] ? __lock_acquire+0x7c60/0x7c60 [ 85.249532][ T4312] ? __fdget_pos+0x1e2/0x370 [ 85.254177][ T4312] ksys_write+0x14d/0x250 [ 85.258553][ T4312] ? __ia32_sys_read+0x80/0x80 [ 85.263386][ T4312] ? lockdep_hardirqs_on+0x94/0x140 [ 85.268630][ T4312] do_syscall_64+0x4c/0xa0 [ 85.273088][ T4312] ? clear_bhb_loop+0x30/0x80 [ 85.277815][ T4312] ? clear_bhb_loop+0x30/0x80 [ 85.282526][ T4312] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 85.288466][ T4312] RIP: 0033:0x7f76d195a749 [ 85.292920][ T4312] 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 [ 85.312791][ T4312] RSP: 002b:00007ffd951ece58 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 85.321247][ T4312] RAX: ffffffffffffffda RBX: 00007f76d1bb0fa0 RCX: 00007f76d195a749 [ 85.329261][ T4312] RDX: 0000000000000008 RSI: 0000200000000080 RDI: 0000000000000003 [ 85.337269][ T4312] RBP: 00007f76d19def91 R08: 0000000000000000 R09: 0000000000000000 [ 85.345281][ T4312] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 85.353394][ T4312] R13: 00007f76d1bb0fa0 R14: 00007f76d1bb0fa0 R15: 0000000000000003 [ 85.361414][ T4312]