Warning: Permanently added '10.128.0.66' (ED25519) to the list of known hosts. 2026/03/07 11:29:15 parsed 1 programs [ 70.367105][ T4187] cgroup: Unknown subsys name 'net' [ 70.484004][ T4187] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size = 127995904 bytes [ 71.520044][ T1421] ieee802154 phy0 wpan0: encryption failed: -22 [ 71.526725][ T1421] ieee802154 phy1 wpan1: encryption failed: -22 [ 72.087837][ T4187] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k FS [ 74.101073][ T154] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 74.111178][ T154] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 74.124292][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 74.159810][ T4220] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 74.168040][ T4220] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 74.176212][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 75.604622][ T9] ODEBUG: Out of memory. ODEBUG disabled [ 76.242455][ T4278] chnl_net:caif_netlink_parms(): no params data found [ 76.289141][ T4278] bridge0: port 1(bridge_slave_0) entered blocking state [ 76.297005][ T4278] bridge0: port 1(bridge_slave_0) entered disabled state [ 76.304907][ T4278] device bridge_slave_0 entered promiscuous mode [ 76.315267][ T4278] bridge0: port 2(bridge_slave_1) entered blocking state [ 76.322586][ T4278] bridge0: port 2(bridge_slave_1) entered disabled state [ 76.330994][ T4278] device bridge_slave_1 entered promiscuous mode [ 76.368261][ T4278] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 76.379332][ T4278] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 76.402988][ T4278] team0: Port device team_slave_0 added [ 76.429785][ T4278] team0: Port device team_slave_1 added [ 76.446997][ T4278] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 76.454140][ T4278] 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. [ 76.480591][ T4278] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 76.493903][ T4278] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 76.501730][ T4278] 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. [ 76.528664][ T4278] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 76.580760][ T4278] device hsr_slave_0 entered promiscuous mode [ 76.588126][ T4278] device hsr_slave_1 entered promiscuous mode [ 76.720537][ T4278] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 76.732565][ T4278] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 76.743044][ T4278] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 76.752641][ T4278] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 76.793832][ T4278] bridge0: port 2(bridge_slave_1) entered blocking state [ 76.801081][ T4278] bridge0: port 2(bridge_slave_1) entered forwarding state [ 76.808948][ T4278] bridge0: port 1(bridge_slave_0) entered blocking state [ 76.816289][ T4278] bridge0: port 1(bridge_slave_0) entered forwarding state [ 76.881661][ T4278] 8021q: adding VLAN 0 to HW filter on device bond0 [ 76.913006][ T4220] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 76.923160][ T4220] bridge0: port 1(bridge_slave_0) entered disabled state [ 76.931156][ T4220] bridge0: port 2(bridge_slave_1) entered disabled state [ 76.939992][ T4220] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 76.955158][ T4278] 8021q: adding VLAN 0 to HW filter on device team0 [ 76.981045][ T4220] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 76.989862][ T4220] bridge0: port 1(bridge_slave_0) entered blocking state [ 76.997425][ T4220] bridge0: port 1(bridge_slave_0) entered forwarding state [ 77.009115][ T4220] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 77.018464][ T4220] bridge0: port 2(bridge_slave_1) entered blocking state [ 77.025776][ T4220] bridge0: port 2(bridge_slave_1) entered forwarding state [ 77.065812][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 77.075079][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 77.094403][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 77.103008][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 77.124335][ T4278] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 77.138431][ T4278] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 77.148041][ T4220] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 77.265234][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 77.273799][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 77.296533][ T4278] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 77.317131][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 77.326210][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 77.347044][ T4220] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 77.355937][ T4220] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 77.367049][ T4220] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 77.375520][ T4220] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 77.386353][ T4278] device veth0_vlan entered promiscuous mode [ 77.400051][ T4278] device veth1_vlan entered promiscuous mode [ 77.423650][ T4220] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 77.432177][ T4220] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 77.442400][ T4220] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 77.451688][ T4220] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 77.465225][ T4278] device veth0_macvtap entered promiscuous mode [ 77.476928][ T4278] device veth1_macvtap entered promiscuous mode [ 77.495399][ T4278] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 77.504046][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 77.513526][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 77.528914][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 77.539580][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 77.552571][ T4278] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 77.560808][ T4220] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 77.571721][ T4220] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 77.584496][ T4278] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 77.594135][ T4278] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 77.603613][ T4278] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 77.612900][ T4278] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 77.710106][ T4278] syz-executor (4278) used greatest stack depth: 20496 bytes left 2026/03/07 11:29:26 executed programs: 0 [ 78.493705][ T4296] chnl_net:caif_netlink_parms(): no params data found [ 78.564102][ T4296] bridge0: port 1(bridge_slave_0) entered blocking state [ 78.579722][ T4296] bridge0: port 1(bridge_slave_0) entered disabled state [ 78.588164][ T4296] device bridge_slave_0 entered promiscuous mode [ 78.597150][ T4296] bridge0: port 2(bridge_slave_1) entered blocking state [ 78.604313][ T4296] bridge0: port 2(bridge_slave_1) entered disabled state [ 78.612298][ T4296] device bridge_slave_1 entered promiscuous mode [ 78.634860][ T4296] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 78.648836][ T4296] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 78.675731][ T4296] team0: Port device team_slave_0 added [ 78.684081][ T4296] team0: Port device team_slave_1 added [ 78.708051][ T4296] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 78.715328][ T4296] 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. [ 78.742258][ T4296] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 78.754583][ T4296] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 78.761753][ T4296] 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. [ 78.789295][ T4296] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 78.829593][ T4296] device hsr_slave_0 entered promiscuous mode [ 78.837311][ T4296] device hsr_slave_1 entered promiscuous mode [ 78.844238][ T4296] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 78.852671][ T4296] Cannot create hsr debugfs directory [ 78.943301][ T4296] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 80.407724][ T4307] Bluetooth: hci0: command 0x0409 tx timeout [ 81.511916][ T4296] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 82.477070][ T4189] Bluetooth: hci0: command 0x041b tx timeout [ 82.601491][ T4296] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 82.703294][ T4296] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 82.900057][ T4296] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 82.924760][ T4296] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 82.934194][ T4296] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 82.945213][ T4296] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 83.019634][ T4296] 8021q: adding VLAN 0 to HW filter on device bond0 [ 83.032572][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 83.041385][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 83.052738][ T4296] 8021q: adding VLAN 0 to HW filter on device team0 [ 83.069091][ T9] device hsr_slave_0 left promiscuous mode [ 83.075697][ T9] device hsr_slave_1 left promiscuous mode [ 83.082321][ T9] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 83.091536][ T9] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 83.100838][ T9] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 83.108410][ T9] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 83.116295][ T9] device bridge_slave_1 left promiscuous mode [ 83.123820][ T9] bridge0: port 2(bridge_slave_1) entered disabled state [ 83.139153][ T9] device bridge_slave_0 left promiscuous mode [ 83.145559][ T9] bridge0: port 1(bridge_slave_0) entered disabled state [ 83.166831][ T9] device veth1_macvtap left promiscuous mode [ 83.173642][ T9] device veth0_macvtap left promiscuous mode [ 83.179862][ T9] device veth1_vlan left promiscuous mode [ 83.185927][ T9] device veth0_vlan left promiscuous mode [ 83.336762][ T9] team0 (unregistering): Port device team_slave_1 removed [ 83.350734][ T9] team0 (unregistering): Port device team_slave_0 removed [ 83.364063][ T9] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 83.379074][ T9] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 83.435697][ T9] bond0 (unregistering): Released all slaves [ 83.497061][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 83.506095][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 83.515562][ T155] bridge0: port 1(bridge_slave_0) entered blocking state [ 83.522763][ T155] bridge0: port 1(bridge_slave_0) entered forwarding state [ 83.539001][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 83.554438][ T4220] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 83.566412][ T4220] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 83.575562][ T4220] bridge0: port 2(bridge_slave_1) entered blocking state [ 83.582951][ T4220] bridge0: port 2(bridge_slave_1) entered forwarding state [ 83.592785][ T4220] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 83.611739][ T4220] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 83.621569][ T4220] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 83.632767][ T4220] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 83.641776][ T4220] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 83.651552][ T4220] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 83.660889][ T4220] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 83.670975][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 83.681183][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 83.708207][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 83.718333][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 83.729323][ T4296] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 83.832519][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 83.840880][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 83.854748][ T4296] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 83.879676][ T4220] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 83.890143][ T4220] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 83.911458][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 83.920928][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 83.933109][ T4296] device veth0_vlan entered promiscuous mode [ 83.941692][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 83.950257][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 83.963679][ T4296] device veth1_vlan entered promiscuous mode [ 83.987763][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 83.997739][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 84.006193][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 84.016248][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 84.030918][ T4296] device veth0_macvtap entered promiscuous mode [ 84.039174][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 84.050806][ T4296] device veth1_macvtap entered promiscuous mode [ 84.071833][ T4296] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 84.080077][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 84.090578][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 84.103970][ T4296] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 84.112215][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 84.121142][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 84.132816][ T4296] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 84.142512][ T4296] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 84.151583][ T4296] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 84.160442][ T4296] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 84.233372][ T4220] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 84.251490][ T4220] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 84.259662][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 84.282735][ T155] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 84.291332][ T155] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 84.301870][ T4220] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 84.428383][ T4316] [ 84.430788][ T4316] ====================================================== [ 84.438004][ T4316] WARNING: possible circular locking dependency detected [ 84.445066][ T4316] syzkaller #0 Not tainted [ 84.449522][ T4316] ------------------------------------------------------ [ 84.456563][ T4316] syz.0.17/4316 is trying to acquire lock: [ 84.462517][ T4316] ffff88802519cc28 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}, at: __flush_work+0xfa/0x210 [ 84.473724][ T4316] [ 84.473724][ T4316] but task is already holding lock: [ 84.481218][ T4316] ffffffff8d6c51a8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x18b/0x560 [ 84.491025][ T4316] [ 84.491025][ T4316] which lock already depends on the new lock. [ 84.491025][ T4316] [ 84.501934][ T4316] [ 84.501934][ T4316] the existing dependency chain (in reverse order) is: [ 84.511239][ T4316] [ 84.511239][ T4316] -> #4 (rfkill_global_mutex){+.+.}-{3:3}: [ 84.519526][ T4316] __mutex_lock_common+0x1e3/0x2400 [ 84.525608][ T4316] mutex_lock_nested+0x17/0x20 [ 84.530944][ T4316] rfkill_register+0x33/0x8a0 [ 84.536223][ T4316] hci_register_dev+0x452/0x970 [ 84.541628][ T4316] vhci_create_device+0x32c/0x5c0 [ 84.547222][ T4316] vhci_write+0x391/0x450 [ 84.552363][ T4316] vfs_write+0x745/0xd60 [ 84.557148][ T4316] ksys_write+0x152/0x260 [ 84.562020][ T4316] do_syscall_64+0x4c/0xa0 [ 84.567507][ T4316] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 84.573959][ T4316] [ 84.573959][ T4316] -> #3 (&data->open_mutex){+.+.}-{3:3}: [ 84.581827][ T4316] __mutex_lock_common+0x1e3/0x2400 [ 84.587704][ T4316] mutex_lock_nested+0x17/0x20 [ 84.593277][ T4316] vhci_send_frame+0x88/0x100 [ 84.598602][ T4316] hci_send_frame+0x1a9/0x2e0 [ 84.604198][ T4316] hci_tx_work+0x9f9/0x1710 [ 84.609258][ T4316] process_one_work+0x85f/0x1010 [ 84.614926][ T4316] worker_thread+0xaa6/0x1290 [ 84.620190][ T4316] kthread+0x436/0x520 [ 84.624811][ T4316] ret_from_fork+0x1f/0x30 [ 84.629860][ T4316] [ 84.629860][ T4316] -> #2 ((work_completion)(&hdev->tx_work)){+.+.}-{0:0}: [ 84.639754][ T4316] __flush_work+0x116/0x210 [ 84.644849][ T4316] hci_dev_do_close+0x1e7/0x1030 [ 84.650357][ T4316] hci_unregister_dev+0x2d7/0x580 [ 84.655938][ T4316] vhci_release+0x73/0xc0 [ 84.660821][ T4316] __fput+0x234/0x930 [ 84.665436][ T4316] task_work_run+0x125/0x1a0 [ 84.670573][ T4316] do_exit+0x626/0x20c0 [ 84.675267][ T4316] do_group_exit+0x12e/0x300 [ 84.680492][ T4316] get_signal+0x6ca/0x12c0 [ 84.685540][ T4316] arch_do_signal_or_restart+0xe7/0x12c0 [ 84.691721][ T4316] exit_to_user_mode_loop+0x9e/0x130 [ 84.697561][ T4316] exit_to_user_mode_prepare+0xee/0x180 [ 84.703816][ T4316] syscall_exit_to_user_mode+0x16/0x40 [ 84.709839][ T4316] do_syscall_64+0x58/0xa0 [ 84.714810][ T4316] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 84.721269][ T4316] [ 84.721269][ T4316] -> #1 (&hdev->req_lock){+.+.}-{3:3}: [ 84.729122][ T4316] __mutex_lock_common+0x1e3/0x2400 [ 84.735488][ T4316] mutex_lock_nested+0x17/0x20 [ 84.740888][ T4316] bg_scan_update+0x44/0x3b0 [ 84.746036][ T4316] process_one_work+0x85f/0x1010 [ 84.751520][ T4316] worker_thread+0xaa6/0x1290 [ 84.756759][ T4316] kthread+0x436/0x520 [ 84.761384][ T4316] ret_from_fork+0x1f/0x30 [ 84.766438][ T4316] [ 84.766438][ T4316] -> #0 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}: [ 84.776726][ T4316] __lock_acquire+0x2c42/0x7d10 [ 84.782353][ T4316] lock_acquire+0x19e/0x400 [ 84.787415][ T4316] __flush_work+0x116/0x210 [ 84.792470][ T4316] __cancel_work_timer+0x3f4/0x560 [ 84.798145][ T4316] hci_request_cancel_all+0xcc/0x300 [ 84.803991][ T4316] hci_dev_do_close+0x4e/0x1030 [ 84.809493][ T4316] hci_rfkill_set_block+0x10a/0x190 [ 84.815426][ T4316] rfkill_set_block+0x1c6/0x420 [ 84.820925][ T4316] rfkill_fop_write+0x452/0x560 [ 84.826333][ T4316] vfs_write+0x30b/0xd60 [ 84.831337][ T4316] ksys_write+0x152/0x260 [ 84.836363][ T4316] do_syscall_64+0x4c/0xa0 [ 84.841776][ T4316] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 84.848377][ T4316] [ 84.848377][ T4316] other info that might help us debug this: [ 84.848377][ T4316] [ 84.858890][ T4316] Chain exists of: [ 84.858890][ T4316] (work_completion)(&hdev->bg_scan_update) --> &data->open_mutex --> rfkill_global_mutex [ 84.858890][ T4316] [ 84.874960][ T4316] Possible unsafe locking scenario: [ 84.874960][ T4316] [ 84.882440][ T4316] CPU0 CPU1 [ 84.887945][ T4316] ---- ---- [ 84.893504][ T4316] lock(rfkill_global_mutex); [ 84.898294][ T4316] lock(&data->open_mutex); [ 84.905522][ T4316] lock(rfkill_global_mutex); [ 84.913099][ T4316] lock((work_completion)(&hdev->bg_scan_update)); [ 84.919730][ T4316] [ 84.919730][ T4316] *** DEADLOCK *** [ 84.919730][ T4316] [ 84.927896][ T4316] 1 lock held by syz.0.17/4316: [ 84.932765][ T4316] #0: ffffffff8d6c51a8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x18b/0x560 [ 84.942901][ T4316] [ 84.942901][ T4316] stack backtrace: [ 84.948907][ T4316] CPU: 0 PID: 4316 Comm: syz.0.17 Not tainted syzkaller #0 [ 84.956125][ T4316] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026 [ 84.966412][ T4316] Call Trace: [ 84.969814][ T4316] [ 84.972807][ T4316] dump_stack_lvl+0x188/0x250 [ 84.977518][ T4316] ? load_image+0x400/0x400 [ 84.982044][ T4316] ? show_regs_print_info+0x20/0x20 [ 84.987274][ T4316] ? print_circular_bug+0x12b/0x1a0 [ 84.992636][ T4316] check_noncircular+0x296/0x330 [ 84.997621][ T4316] ? look_up_lock_class+0x71/0x110 [ 85.002792][ T4316] ? add_chain_block+0x940/0x940 [ 85.007799][ T4316] ? lockdep_lock+0xf1/0x1f0 [ 85.012436][ T4316] ? __lock_acquire+0x12e8/0x7d10 [ 85.017505][ T4316] ? mark_lock+0x94/0x320 [ 85.021882][ T4316] __lock_acquire+0x2c42/0x7d10 [ 85.026787][ T4316] ? rcu_lock_release+0x5/0x20 [ 85.031671][ T4316] ? verify_lock_unused+0x140/0x140 [ 85.036935][ T4316] ? mark_lock+0x94/0x320 [ 85.041390][ T4316] lock_acquire+0x19e/0x400 [ 85.046054][ T4316] ? __flush_work+0xfa/0x210 [ 85.050863][ T4316] ? __lock_acquire+0x7d10/0x7d10 [ 85.055937][ T4316] ? read_lock_is_recursive+0x10/0x10 [ 85.061416][ T4316] ? start_flush_work+0x776/0x820 [ 85.066594][ T4316] __flush_work+0x116/0x210 [ 85.071133][ T4316] ? __flush_work+0xfa/0x210 [ 85.075752][ T4316] ? flush_work+0x20/0x20 [ 85.080125][ T4316] ? try_to_grab_pending+0xfa/0x7f0 [ 85.085371][ T4316] ? mark_lock+0x94/0x320 [ 85.089733][ T4316] ? lockdep_hardirqs_on_prepare+0x409/0x770 [ 85.095751][ T4316] ? lock_chain_count+0x20/0x20 [ 85.100633][ T4316] ? mark_lock+0x94/0x320 [ 85.105384][ T4316] ? __cancel_work_timer+0x36a/0x560 [ 85.110715][ T4316] __cancel_work_timer+0x3f4/0x560 [ 85.115965][ T4316] ? cancel_work_sync+0x20/0x20 [ 85.120958][ T4316] ? __cancel_work+0x1f9/0x2e0 [ 85.126082][ T4316] ? lockdep_hardirqs_on+0x94/0x140 [ 85.131326][ T4316] ? __cancel_work+0x27b/0x2e0 [ 85.136304][ T4316] ? cancel_work+0x20/0x20 [ 85.140760][ T4316] ? lock_chain_count+0x20/0x20 [ 85.145652][ T4316] hci_request_cancel_all+0xcc/0x300 [ 85.150984][ T4316] hci_dev_do_close+0x4e/0x1030 [ 85.155866][ T4316] ? _raw_spin_unlock_irqrestore+0xc1/0x120 [ 85.162031][ T4316] ? _raw_spin_unlock+0x40/0x40 [ 85.166927][ T4316] hci_rfkill_set_block+0x10a/0x190 [ 85.172335][ T4316] ? rcu_lock_release+0x20/0x20 [ 85.177511][ T4316] rfkill_set_block+0x1c6/0x420 [ 85.182412][ T4316] rfkill_fop_write+0x452/0x560 [ 85.187332][ T4316] ? rfkill_fop_read+0x4d0/0x4d0 [ 85.192315][ T4316] ? common_file_perm+0x110/0x1c0 [ 85.197485][ T4316] ? fsnotify_perm+0x5d/0x560 [ 85.202383][ T4316] ? security_file_permission+0x75/0xa0 [ 85.207968][ T4316] ? rfkill_fop_read+0x4d0/0x4d0 [ 85.212949][ T4316] vfs_write+0x30b/0xd60 [ 85.217225][ T4316] ? file_end_write+0x250/0x250 [ 85.222224][ T4316] ? __context_tracking_exit+0x4c/0x80 [ 85.227736][ T4316] ? __lock_acquire+0x7d10/0x7d10 [ 85.232979][ T4316] ? __fdget_pos+0x1e2/0x370 [ 85.237707][ T4316] ksys_write+0x152/0x260 [ 85.242069][ T4316] ? __ia32_sys_read+0x80/0x80 [ 85.246873][ T4316] ? lockdep_hardirqs_on+0x94/0x140 [ 85.252190][ T4316] do_syscall_64+0x4c/0xa0 [ 85.256641][ T4316] ? clear_bhb_loop+0x30/0x80 [ 85.261489][ T4316] ? clear_bhb_loop+0x30/0x80 [ 85.266290][ T4316] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 85.272323][ T4316] RIP: 0033:0x7f6029688799 [ 85.276776][ T4316] 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 [ 85.296683][ T4316] RSP: 002b:00007ffdc75c3fa8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 85.305118][ T4316] RAX: ffffffffffffffda RBX: 00007f6029901fa0 RCX: 00007f6029688799 [ 85.313127][ T4316] RDX: 0000000000000008 RSI: 0000200000000140 RDI: 0000000000000003 [ 85.321322][ T4316] RBP: 00007f602971ebd9 R08: 0000000000000000 R09: 0000000000000000 [ 85.329410][ T4316] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 85.337396][ T4316] R13: 00007f6029901fac R14: 00007f6029901fa0 R15: 00007f6029901fa0 [ 85.345566][ T4316]