Warning: Permanently added '10.128.0.64' (ED25519) to the list of known hosts. 2026/01/16 07:17:48 parsed 1 programs [ 66.676991][ T4187] cgroup: Unknown subsys name 'net' [ 66.782224][ T4187] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size = 127995904 bytes [ 68.328581][ T4187] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k FS [ 70.708266][ T154] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 70.721645][ T154] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 70.730741][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 70.756480][ T155] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 70.765306][ T155] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 70.778059][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 71.366494][ T4223] chnl_net:caif_netlink_parms(): no params data found [ 71.443501][ T4223] bridge0: port 1(bridge_slave_0) entered blocking state [ 71.451502][ T4223] bridge0: port 1(bridge_slave_0) entered disabled state [ 71.460035][ T4223] device bridge_slave_0 entered promiscuous mode [ 71.471002][ T4223] bridge0: port 2(bridge_slave_1) entered blocking state [ 71.478608][ T4223] bridge0: port 2(bridge_slave_1) entered disabled state [ 71.482755][ T1422] ieee802154 phy0 wpan0: encryption failed: -22 [ 71.490462][ T4223] device bridge_slave_1 entered promiscuous mode [ 71.492302][ T1422] ieee802154 phy1 wpan1: encryption failed: -22 [ 71.527446][ T4223] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 71.539301][ T4223] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 71.571831][ T4223] team0: Port device team_slave_0 added [ 71.579927][ T4223] team0: Port device team_slave_1 added [ 71.611468][ T4223] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 71.618477][ T4223] 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. [ 71.645653][ T4223] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 71.662765][ T4223] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 71.669765][ T4223] 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. [ 71.696149][ T4223] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 71.743974][ T4223] device hsr_slave_0 entered promiscuous mode [ 71.752492][ T4223] device hsr_slave_1 entered promiscuous mode [ 71.911939][ T4223] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 71.925146][ T4223] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 71.936242][ T4223] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 71.946180][ T4223] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 72.039570][ T4223] 8021q: adding VLAN 0 to HW filter on device bond0 [ 72.060676][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 72.072964][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 72.087784][ T4223] 8021q: adding VLAN 0 to HW filter on device team0 [ 72.102353][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 72.112138][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 72.122294][ T154] bridge0: port 1(bridge_slave_0) entered blocking state [ 72.129633][ T154] bridge0: port 1(bridge_slave_0) entered forwarding state [ 72.149233][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 72.157890][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 72.167137][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 72.176929][ T154] bridge0: port 2(bridge_slave_1) entered blocking state [ 72.184096][ T154] bridge0: port 2(bridge_slave_1) entered forwarding state [ 72.193697][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 72.240487][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 72.253393][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 72.275805][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 72.284730][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 72.294438][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 72.304312][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 72.313353][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 72.329714][ T4223] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 72.339159][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 72.464119][ T4214] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 72.471854][ T4214] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 72.485593][ T4223] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 72.504118][ T4214] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 72.526614][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 72.536290][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 72.545101][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 72.556213][ T4223] device veth0_vlan entered promiscuous mode [ 72.569416][ T4223] device veth1_vlan entered promiscuous mode [ 72.607824][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 72.616191][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 72.625773][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 72.637866][ T4223] device veth0_macvtap entered promiscuous mode [ 72.660487][ T4223] device veth1_macvtap entered promiscuous mode [ 72.670028][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 72.688402][ T4223] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 72.697725][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 72.706891][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 72.734237][ T4223] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 72.745923][ T4214] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 72.755151][ T4214] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 72.765229][ T4223] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 72.775491][ T4223] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 72.784765][ T4223] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 72.794195][ T4223] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 72.912591][ T4223] syz-executor (4223) used greatest stack depth: 21056 bytes left 2026/01/16 07:17:58 executed programs: 0 [ 74.682422][ T4293] chnl_net:caif_netlink_parms(): no params data found [ 74.746553][ T4293] bridge0: port 1(bridge_slave_0) entered blocking state [ 74.755000][ T4293] bridge0: port 1(bridge_slave_0) entered disabled state [ 74.765011][ T4293] device bridge_slave_0 entered promiscuous mode [ 74.775327][ T4293] bridge0: port 2(bridge_slave_1) entered blocking state [ 74.782608][ T4293] bridge0: port 2(bridge_slave_1) entered disabled state [ 74.790464][ T4293] device bridge_slave_1 entered promiscuous mode [ 74.817314][ T4293] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 74.829220][ T4293] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 74.860578][ T4293] team0: Port device team_slave_0 added [ 74.868790][ T4293] team0: Port device team_slave_1 added [ 74.892900][ T4293] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 74.899898][ 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. [ 74.929095][ T4293] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 74.941837][ T4293] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 74.948934][ 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. [ 74.974925][ T4293] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 75.010875][ T4293] device hsr_slave_0 entered promiscuous mode [ 75.020066][ T4293] device hsr_slave_1 entered promiscuous mode [ 75.026995][ T4293] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 75.035314][ T4293] Cannot create hsr debugfs directory [ 75.127103][ T4293] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 76.582332][ T4246] Bluetooth: hci0: command 0x0409 tx timeout [ 77.704955][ T4293] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 77.747498][ T4293] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 77.835451][ T4293] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 78.059501][ T4293] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 78.069153][ T4293] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 78.079294][ T4293] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 78.091019][ T4293] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 78.149378][ T1661] device hsr_slave_0 left promiscuous mode [ 78.156212][ T1661] device hsr_slave_1 left promiscuous mode [ 78.164885][ T1661] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 78.172424][ T1661] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 78.180905][ T1661] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 78.188920][ T1661] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 78.197188][ T1661] device bridge_slave_1 left promiscuous mode [ 78.204436][ T1661] bridge0: port 2(bridge_slave_1) entered disabled state [ 78.218158][ T1661] device bridge_slave_0 left promiscuous mode [ 78.225652][ T1661] bridge0: port 1(bridge_slave_0) entered disabled state [ 78.245214][ T1661] device veth1_macvtap left promiscuous mode [ 78.251954][ T1661] device veth0_macvtap left promiscuous mode [ 78.258018][ T1661] device veth1_vlan left promiscuous mode [ 78.265074][ T1661] device veth0_vlan left promiscuous mode [ 78.448991][ T1661] team0 (unregistering): Port device team_slave_1 removed [ 78.465211][ T1661] team0 (unregistering): Port device team_slave_0 removed [ 78.483114][ T1661] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 78.498295][ T1661] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 78.559059][ T1661] bond0 (unregistering): Released all slaves [ 78.640091][ T4293] 8021q: adding VLAN 0 to HW filter on device bond0 [ 78.656126][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 78.663568][ T4246] Bluetooth: hci0: command 0x041b tx timeout [ 78.670683][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 78.684180][ T4293] 8021q: adding VLAN 0 to HW filter on device team0 [ 78.702488][ T4214] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 78.714205][ T4214] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 78.723128][ T4214] bridge0: port 1(bridge_slave_0) entered blocking state [ 78.730416][ T4214] bridge0: port 1(bridge_slave_0) entered forwarding state [ 78.742891][ T4214] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 78.753895][ T4214] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 78.763496][ T4214] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 78.772948][ T4214] bridge0: port 2(bridge_slave_1) entered blocking state [ 78.780228][ T4214] bridge0: port 2(bridge_slave_1) entered forwarding state [ 78.802813][ T4214] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 78.812473][ T4214] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 78.821736][ T4214] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 78.832195][ T4214] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 78.841054][ T4214] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 78.850774][ T4214] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 78.859886][ T4214] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 78.868600][ T4214] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 78.877600][ T4214] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 78.889884][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 78.898615][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 78.917620][ T4293] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 79.029694][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 79.037596][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 79.050380][ T4293] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 79.074283][ T4214] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 79.083612][ T4214] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 79.106496][ T4293] device veth0_vlan entered promiscuous mode [ 79.114522][ T4214] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 79.123575][ T4214] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 79.135428][ T4214] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 79.145700][ T4214] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 79.161742][ T4293] device veth1_vlan entered promiscuous mode [ 79.187524][ T4214] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 79.197384][ T4214] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 79.206533][ T4214] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 79.215706][ T4214] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 79.228384][ T4293] device veth0_macvtap entered promiscuous mode [ 79.240120][ T4293] device veth1_macvtap entered promiscuous mode [ 79.260870][ T4293] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 79.268893][ T4214] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 79.279102][ T4214] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 79.288258][ T4214] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 79.298285][ T4214] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 79.310852][ T4293] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 79.320817][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 79.333222][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 79.346112][ T4293] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 79.356884][ T4293] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 79.365736][ T4293] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 79.376069][ T4293] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 79.458071][ T4214] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 79.481561][ T4214] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 79.497213][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 79.512292][ T4214] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 79.520349][ T4214] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 79.530492][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 79.694326][ T4322] [ 79.696714][ T4322] ====================================================== [ 79.703846][ T4322] WARNING: possible circular locking dependency detected [ 79.710910][ T4322] syzkaller #0 Not tainted [ 79.715382][ T4322] ------------------------------------------------------ [ 79.722567][ T4322] syz.0.17/4322 is trying to acquire lock: [ 79.728571][ T4322] ffff8880212b8c28 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}, at: __flush_work+0xc1/0x1b0 [ 79.740011][ T4322] [ 79.740011][ T4322] but task is already holding lock: [ 79.747415][ T4322] ffffffff8d4ba7e8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x19e/0x560 [ 79.757144][ T4322] [ 79.757144][ T4322] which lock already depends on the new lock. [ 79.757144][ T4322] [ 79.767730][ T4322] [ 79.767730][ T4322] the existing dependency chain (in reverse order) is: [ 79.776856][ T4322] [ 79.776856][ T4322] -> #4 (rfkill_global_mutex){+.+.}-{3:3}: [ 79.784884][ T4322] __mutex_lock_common+0x1eb/0x2390 [ 79.790640][ T4322] mutex_lock_nested+0x17/0x20 [ 79.795967][ T4322] rfkill_register+0x33/0x8a0 [ 79.801200][ T4322] hci_register_dev+0x452/0x970 [ 79.806603][ T4322] vhci_create_device+0x32c/0x5c0 [ 79.812269][ T4322] vhci_write+0x391/0x450 [ 79.817257][ T4322] vfs_write+0x712/0xd00 [ 79.822056][ T4322] ksys_write+0x14d/0x250 [ 79.827027][ T4322] do_syscall_64+0x4c/0xa0 [ 79.831996][ T4322] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 79.838447][ T4322] [ 79.838447][ T4322] -> #3 (&data->open_mutex){+.+.}-{3:3}: [ 79.846307][ T4322] __mutex_lock_common+0x1eb/0x2390 [ 79.852067][ T4322] mutex_lock_nested+0x17/0x20 [ 79.857393][ T4322] vhci_send_frame+0x88/0x100 [ 79.862627][ T4322] hci_send_frame+0x1a9/0x2e0 [ 79.867862][ T4322] hci_tx_work+0x9f9/0x1710 [ 79.873190][ T4322] process_one_work+0x863/0x1000 [ 79.878683][ T4322] worker_thread+0xaa8/0x12a0 [ 79.883914][ T4322] kthread+0x436/0x520 [ 79.888532][ T4322] ret_from_fork+0x1f/0x30 [ 79.893499][ T4322] [ 79.893499][ T4322] -> #2 ((work_completion)(&hdev->tx_work)){+.+.}-{0:0}: [ 79.902749][ T4322] __flush_work+0xdd/0x1b0 [ 79.907740][ T4322] hci_dev_do_close+0x1e7/0x1030 [ 79.913236][ T4322] hci_unregister_dev+0x2d7/0x580 [ 79.918813][ T4322] vhci_release+0x73/0xc0 [ 79.923697][ T4322] __fput+0x234/0x930 [ 79.928392][ T4322] task_work_run+0x125/0x1a0 [ 79.933554][ T4322] do_exit+0x61e/0x20a0 [ 79.938264][ T4322] do_group_exit+0x12e/0x300 [ 79.943495][ T4322] get_signal+0x6ca/0x12c0 [ 79.948471][ T4322] arch_do_signal_or_restart+0xc1/0x1300 [ 79.954668][ T4322] exit_to_user_mode_loop+0x9e/0x130 [ 79.960527][ T4322] exit_to_user_mode_prepare+0xee/0x180 [ 79.966625][ T4322] syscall_exit_to_user_mode+0x16/0x40 [ 79.972633][ T4322] do_syscall_64+0x58/0xa0 [ 79.977610][ T4322] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 79.984233][ T4322] [ 79.984233][ T4322] -> #1 (&hdev->req_lock){+.+.}-{3:3}: [ 79.992009][ T4322] __mutex_lock_common+0x1eb/0x2390 [ 79.997769][ T4322] mutex_lock_nested+0x17/0x20 [ 80.003229][ T4322] bg_scan_update+0x44/0x3b0 [ 80.008498][ T4322] process_one_work+0x863/0x1000 [ 80.014086][ T4322] worker_thread+0xaa8/0x12a0 [ 80.019316][ T4322] kthread+0x436/0x520 [ 80.023941][ T4322] ret_from_fork+0x1f/0x30 [ 80.029025][ T4322] [ 80.029025][ T4322] -> #0 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}: [ 80.039058][ T4322] __lock_acquire+0x2c33/0x7c60 [ 80.044466][ T4322] lock_acquire+0x197/0x3f0 [ 80.049534][ T4322] __flush_work+0xdd/0x1b0 [ 80.054587][ T4322] __cancel_work_timer+0x3ac/0x520 [ 80.060650][ T4322] hci_request_cancel_all+0xcc/0x300 [ 80.066563][ T4322] hci_dev_do_close+0x4e/0x1030 [ 80.071971][ T4322] hci_rfkill_set_block+0x10a/0x190 [ 80.077816][ T4322] rfkill_set_block+0x1c6/0x420 [ 80.083219][ T4322] rfkill_fop_write+0x458/0x560 [ 80.088634][ T4322] vfs_write+0x300/0xd00 [ 80.093508][ T4322] ksys_write+0x14d/0x250 [ 80.098384][ T4322] do_syscall_64+0x4c/0xa0 [ 80.103358][ T4322] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 80.109808][ T4322] [ 80.109808][ T4322] other info that might help us debug this: [ 80.109808][ T4322] [ 80.120060][ T4322] Chain exists of: [ 80.120060][ T4322] (work_completion)(&hdev->bg_scan_update) --> &data->open_mutex --> rfkill_global_mutex [ 80.120060][ T4322] [ 80.135912][ T4322] Possible unsafe locking scenario: [ 80.135912][ T4322] [ 80.143385][ T4322] CPU0 CPU1 [ 80.148778][ T4322] ---- ---- [ 80.154170][ T4322] lock(rfkill_global_mutex); [ 80.158961][ T4322] lock(&data->open_mutex); [ 80.166095][ T4322] lock(rfkill_global_mutex); [ 80.173507][ T4322] lock((work_completion)(&hdev->bg_scan_update)); [ 80.180304][ T4322] [ 80.180304][ T4322] *** DEADLOCK *** [ 80.180304][ T4322] [ 80.188476][ T4322] 1 lock held by syz.0.17/4322: [ 80.193543][ T4322] #0: ffffffff8d4ba7e8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x19e/0x560 [ 80.203773][ T4322] [ 80.203773][ T4322] stack backtrace: [ 80.209707][ T4322] CPU: 1 PID: 4322 Comm: syz.0.17 Not tainted syzkaller #0 [ 80.216946][ T4322] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 [ 80.227047][ T4322] Call Trace: [ 80.230364][ T4322] [ 80.233339][ T4322] dump_stack_lvl+0x168/0x230 [ 80.238051][ T4322] ? load_image+0x3b0/0x3b0 [ 80.242584][ T4322] ? show_regs_print_info+0x20/0x20 [ 80.247997][ T4322] ? print_circular_bug+0x12b/0x1a0 [ 80.253238][ T4322] check_noncircular+0x274/0x310 [ 80.258207][ T4322] ? add_chain_block+0x940/0x940 [ 80.263186][ T4322] ? lockdep_lock+0xdc/0x1e0 [ 80.267821][ T4322] ? __lock_acquire+0x12d9/0x7c60 [ 80.272982][ T4322] ? lockdep_lock+0x1e0/0x1e0 [ 80.277691][ T4322] ? mark_lock+0x94/0x320 [ 80.282146][ T4322] __lock_acquire+0x2c33/0x7c60 [ 80.287125][ T4322] ? verify_lock_unused+0x140/0x140 [ 80.292388][ T4322] ? verify_lock_unused+0x140/0x140 [ 80.297637][ T4322] lock_acquire+0x197/0x3f0 [ 80.302180][ T4322] ? __flush_work+0xc1/0x1b0 [ 80.306899][ T4322] ? __lock_acquire+0x7c60/0x7c60 [ 80.312052][ T4322] ? read_lock_is_recursive+0x10/0x10 [ 80.317482][ T4322] ? start_flush_work+0x776/0x820 [ 80.322539][ T4322] ? _raw_spin_unlock_irqrestore+0xaa/0x100 [ 80.328471][ T4322] ? _raw_spin_unlock+0x40/0x40 [ 80.333366][ T4322] __flush_work+0xdd/0x1b0 [ 80.337982][ T4322] ? __flush_work+0xc1/0x1b0 [ 80.342609][ T4322] ? flush_work+0x20/0x20 [ 80.346972][ T4322] ? try_to_grab_pending+0xf3/0x7e0 [ 80.352207][ T4322] ? lockdep_hardirqs_off+0x70/0x100 [ 80.357535][ T4322] ? mark_lock+0x94/0x320 [ 80.361907][ T4322] ? lockdep_hardirqs_on_prepare+0x3fc/0x760 [ 80.367921][ T4322] ? lock_chain_count+0x20/0x20 [ 80.372993][ T4322] ? mark_lock+0x94/0x320 [ 80.377458][ T4322] ? __cancel_work_timer+0x331/0x520 [ 80.382778][ T4322] __cancel_work_timer+0x3ac/0x520 [ 80.387927][ T4322] ? cancel_work_sync+0x20/0x20 [ 80.392806][ T4322] ? __cancel_work+0x1f4/0x2d0 [ 80.397707][ T4322] ? lockdep_hardirqs_on+0x94/0x140 [ 80.402959][ T4322] ? __cancel_work+0x26f/0x2d0 [ 80.407774][ T4322] ? cancel_work+0x20/0x20 [ 80.412236][ T4322] ? lock_chain_count+0x20/0x20 [ 80.417229][ T4322] hci_request_cancel_all+0xcc/0x300 [ 80.422561][ T4322] hci_dev_do_close+0x4e/0x1030 [ 80.427453][ T4322] ? _raw_spin_unlock_irqrestore+0xaa/0x100 [ 80.433377][ T4322] ? _raw_spin_unlock+0x40/0x40 [ 80.438361][ T4322] hci_rfkill_set_block+0x10a/0x190 [ 80.443708][ T4322] ? rcu_lock_release+0x20/0x20 [ 80.448589][ T4322] rfkill_set_block+0x1c6/0x420 [ 80.453559][ T4322] rfkill_fop_write+0x458/0x560 [ 80.458459][ T4322] ? verify_lock_unused+0x140/0x140 [ 80.463708][ T4322] ? rfkill_fop_read+0x4b0/0x4b0 [ 80.468672][ T4322] ? common_file_perm+0xc0/0x1c0 [ 80.473646][ T4322] ? fsnotify_perm+0x5d/0x560 [ 80.478352][ T4322] ? security_file_permission+0x75/0xa0 [ 80.484100][ T4322] ? rfkill_fop_read+0x4b0/0x4b0 [ 80.489208][ T4322] vfs_write+0x300/0xd00 [ 80.493486][ T4322] ? file_end_write+0x250/0x250 [ 80.498363][ T4322] ? __context_tracking_exit+0x4c/0x80 [ 80.503975][ T4322] ? __lock_acquire+0x7c60/0x7c60 [ 80.509162][ T4322] ? __fdget_pos+0x1e2/0x370 [ 80.513788][ T4322] ksys_write+0x14d/0x250 [ 80.518155][ T4322] ? __ia32_sys_read+0x80/0x80 [ 80.523081][ T4322] ? lockdep_hardirqs_on+0x94/0x140 [ 80.528315][ T4322] do_syscall_64+0x4c/0xa0 [ 80.532757][ T4322] ? clear_bhb_loop+0x30/0x80 [ 80.537474][ T4322] ? clear_bhb_loop+0x30/0x80 [ 80.542192][ T4322] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 80.548136][ T4322] RIP: 0033:0x7f72d8255749 [ 80.552658][ T4322] 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 [ 80.572436][ T4322] RSP: 002b:00007ffd059bf628 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 80.580886][ T4322] RAX: ffffffffffffffda RBX: 00007f72d84abfa0 RCX: 00007f72d8255749 [ 80.589068][ T4322] RDX: 0000000000000008 RSI: 00002000000000c0 RDI: 0000000000000003 [ 80.597073][ T4322] RBP: 00007f72d82d9f91 R08: 0000000000000000 R09: 0000000000000000 [ 80.605070][ T4322] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 80.613153][ T4322] R13: 00007f72d84abfa0 R14: 00007f72d84abfa0 R15: 0000000000000003 [ 80.621160][ T4322]