Warning: Permanently added '10.128.1.121' (ED25519) to the list of known hosts. 2026/04/25 21:05:56 parsed 1 programs [ 60.341676][ T4187] cgroup: Unknown subsys name 'net' [ 60.447758][ T4187] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size = 127995904 bytes [ 61.951662][ T4187] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k FS [ 63.450857][ T154] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 63.461286][ T154] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 63.478877][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 63.491017][ T1233] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 63.499260][ T1233] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 63.506877][ T1233] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 65.212552][ T4238] chnl_net:caif_netlink_parms(): no params data found [ 65.276741][ T4238] bridge0: port 1(bridge_slave_0) entered blocking state [ 65.284541][ T4238] bridge0: port 1(bridge_slave_0) entered disabled state [ 65.292826][ T4238] device bridge_slave_0 entered promiscuous mode [ 65.303080][ T4238] bridge0: port 2(bridge_slave_1) entered blocking state [ 65.310324][ T4238] bridge0: port 2(bridge_slave_1) entered disabled state [ 65.318748][ T4238] device bridge_slave_1 entered promiscuous mode [ 65.345917][ T4238] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 65.357473][ T4238] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 65.385096][ T4238] team0: Port device team_slave_0 added [ 65.393240][ T4238] team0: Port device team_slave_1 added [ 65.415421][ T4238] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 65.422632][ T4238] 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. [ 65.449168][ T4238] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 65.463400][ T4238] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 65.470578][ T4238] 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. [ 65.496890][ T4238] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 65.536344][ T4238] device hsr_slave_0 entered promiscuous mode [ 65.543345][ T4238] device hsr_slave_1 entered promiscuous mode [ 65.668126][ T4238] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 65.680048][ T4238] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 65.690160][ T4238] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 65.700107][ T4238] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 65.758939][ T4238] 8021q: adding VLAN 0 to HW filter on device bond0 [ 65.774397][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 65.783075][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 65.794711][ T4238] 8021q: adding VLAN 0 to HW filter on device team0 [ 65.806682][ T1233] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 65.816185][ T1233] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 65.832909][ T1233] bridge0: port 1(bridge_slave_0) entered blocking state [ 65.840358][ T1233] bridge0: port 1(bridge_slave_0) entered forwarding state [ 65.876694][ T1233] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 65.895942][ T1233] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 65.907569][ T1233] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 65.916873][ T1233] bridge0: port 2(bridge_slave_1) entered blocking state [ 65.924002][ T1233] bridge0: port 2(bridge_slave_1) entered forwarding state [ 65.940572][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 65.961094][ T1233] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 65.970319][ T1233] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 65.980292][ T1233] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 66.007198][ T1233] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 66.019566][ T1233] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 66.029252][ T1233] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 66.039780][ T1233] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 66.048431][ T1233] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 66.057909][ T4238] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 66.135783][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 66.143588][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 66.156716][ T4238] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 66.174849][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 66.191610][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 66.203569][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 66.211471][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 66.221657][ T4238] device veth0_vlan entered promiscuous mode [ 66.232702][ T4238] device veth1_vlan entered promiscuous mode [ 66.250535][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 66.259378][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 66.267576][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 66.277448][ T4238] device veth0_macvtap entered promiscuous mode [ 66.291177][ T4238] device veth1_macvtap entered promiscuous mode [ 66.307210][ T4238] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 66.314719][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 66.323775][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 66.332437][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 66.344401][ T4238] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 66.351722][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 66.360305][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 66.395425][ T4238] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 66.404609][ T4238] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 66.413452][ T4238] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 66.422205][ T4238] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 66.523712][ T4238] syz-executor (4238) used greatest stack depth: 20272 bytes left 2026/04/25 21:06:05 executed programs: 0 [ 68.060245][ T4290] chnl_net:caif_netlink_parms(): no params data found [ 68.128886][ T4290] bridge0: port 1(bridge_slave_0) entered blocking state [ 68.138929][ T4290] bridge0: port 1(bridge_slave_0) entered disabled state [ 68.148691][ T4290] device bridge_slave_0 entered promiscuous mode [ 68.160426][ T4290] bridge0: port 2(bridge_slave_1) entered blocking state [ 68.167693][ T4290] bridge0: port 2(bridge_slave_1) entered disabled state [ 68.178877][ T4290] device bridge_slave_1 entered promiscuous mode [ 68.205733][ T4290] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 68.217716][ T4290] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 68.246476][ T4290] team0: Port device team_slave_0 added [ 68.255825][ T4290] team0: Port device team_slave_1 added [ 68.278339][ T4290] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 68.285748][ T4290] 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. [ 68.312238][ T4290] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 68.324968][ T4290] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 68.332022][ T4290] 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. [ 68.358259][ T4290] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 68.404984][ T4290] device hsr_slave_0 entered promiscuous mode [ 68.412179][ T4290] device hsr_slave_1 entered promiscuous mode [ 68.418821][ T4290] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 68.427125][ T4290] Cannot create hsr debugfs directory [ 68.514655][ T4290] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 69.962522][ T4244] Bluetooth: hci0: command 0x0409 tx timeout [ 71.324709][ T1430] ieee802154 phy0 wpan0: encryption failed: -22 [ 71.331108][ T1430] ieee802154 phy1 wpan1: encryption failed: -22 [ 72.042508][ T4251] Bluetooth: hci0: command 0x041b tx timeout [ 72.158038][ T4290] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 72.234509][ T4290] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 72.329224][ T4290] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 72.443556][ T4290] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 72.452678][ T4290] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 72.461193][ T4290] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 72.480778][ T4290] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 72.549693][ T4290] 8021q: adding VLAN 0 to HW filter on device bond0 [ 72.561611][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 72.569661][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 72.581163][ T4290] 8021q: adding VLAN 0 to HW filter on device team0 [ 72.592026][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 72.600742][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 72.609522][ T154] bridge0: port 1(bridge_slave_0) entered blocking state [ 72.616734][ T154] bridge0: port 1(bridge_slave_0) entered forwarding state [ 72.625817][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 72.651488][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 72.660436][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 72.670975][ T154] bridge0: port 2(bridge_slave_1) entered blocking state [ 72.678090][ T154] bridge0: port 2(bridge_slave_1) entered forwarding state [ 72.696383][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 72.705566][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 72.714851][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 72.723652][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 72.732484][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 72.756698][ T1233] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 72.766279][ T1233] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 72.777200][ T1233] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 72.786696][ T1233] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 72.809394][ T1233] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 72.818110][ T1233] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 72.829746][ T4290] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 72.860616][ T144] device hsr_slave_0 left promiscuous mode [ 72.867374][ T144] device hsr_slave_1 left promiscuous mode [ 72.875048][ T144] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 72.885574][ T144] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 72.894604][ T144] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 72.902179][ T144] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 72.909696][ T144] device bridge_slave_1 left promiscuous mode [ 72.918119][ T144] bridge0: port 2(bridge_slave_1) entered disabled state [ 72.929932][ T144] device bridge_slave_0 left promiscuous mode [ 72.936686][ T144] bridge0: port 1(bridge_slave_0) entered disabled state [ 72.953748][ T144] device veth1_macvtap left promiscuous mode [ 72.959942][ T144] device veth0_macvtap left promiscuous mode [ 72.966746][ T144] device veth1_vlan left promiscuous mode [ 72.973057][ T144] device veth0_vlan left promiscuous mode [ 73.118191][ T144] team0 (unregistering): Port device team_slave_1 removed [ 73.130472][ T144] team0 (unregistering): Port device team_slave_0 removed [ 73.143178][ T144] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 73.157722][ T144] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 73.212890][ T144] bond0 (unregistering): Released all slaves [ 73.298951][ T1233] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 73.306940][ T1233] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 73.320435][ T4290] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 73.343648][ T1233] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 73.353199][ T1233] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 73.372356][ T1233] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 73.380679][ T1233] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 73.389528][ T1233] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 73.397514][ T1233] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 73.408229][ T4290] device veth0_vlan entered promiscuous mode [ 73.420944][ T4290] device veth1_vlan entered promiscuous mode [ 73.441623][ T1233] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 73.449800][ T1233] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 73.458134][ T1233] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 73.466830][ T1233] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 73.477479][ T4290] device veth0_macvtap entered promiscuous mode [ 73.489538][ T4290] device veth1_macvtap entered promiscuous mode [ 73.507329][ T4290] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 73.516896][ T1233] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 73.525439][ T1233] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 73.533891][ T1233] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 73.542880][ T1233] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 73.553402][ T4290] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 73.560929][ T1233] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 73.570018][ T1233] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 73.588967][ T4290] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 73.598202][ T4290] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 73.607105][ T4290] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 73.616214][ T4290] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 73.699445][ T1233] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 73.710881][ T1233] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 73.719060][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 73.743610][ T154] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 73.751458][ T154] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 73.759791][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 73.884459][ T4303] [ 73.886840][ T4303] ====================================================== [ 73.893879][ T4303] WARNING: possible circular locking dependency detected [ 73.900912][ T4303] syzkaller #0 Not tainted [ 73.905345][ T4303] ------------------------------------------------------ [ 73.912371][ T4303] syz.0.17/4303 is trying to acquire lock: [ 73.918189][ T4303] ffff888025250c28 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}, at: __flush_work+0xfa/0x210 [ 73.929271][ T4303] [ 73.929271][ T4303] but task is already holding lock: [ 73.936652][ T4303] ffffffff8d6c5de8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x18b/0x560 [ 73.946340][ T4303] [ 73.946340][ T4303] which lock already depends on the new lock. [ 73.946340][ T4303] [ 73.956761][ T4303] [ 73.956761][ T4303] the existing dependency chain (in reverse order) is: [ 73.965789][ T4303] [ 73.965789][ T4303] -> #4 (rfkill_global_mutex){+.+.}-{3:3}: [ 73.973803][ T4303] __mutex_lock_common+0x1e3/0x2400 [ 73.979549][ T4303] mutex_lock_nested+0x17/0x20 [ 73.984856][ T4303] rfkill_register+0x33/0x980 [ 73.990082][ T4303] hci_register_dev+0x452/0x970 [ 73.995483][ T4303] vhci_create_device+0x32c/0x5c0 [ 74.001054][ T4303] vhci_write+0x391/0x450 [ 74.005930][ T4303] vfs_write+0x745/0xd60 [ 74.010719][ T4303] ksys_write+0x152/0x260 [ 74.015592][ T4303] do_syscall_64+0x4c/0xa0 [ 74.020550][ T4303] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 74.026993][ T4303] [ 74.026993][ T4303] -> #3 (&data->open_mutex){+.+.}-{3:3}: [ 74.034836][ T4303] __mutex_lock_common+0x1e3/0x2400 [ 74.040582][ T4303] mutex_lock_nested+0x17/0x20 [ 74.045890][ T4303] vhci_send_frame+0x88/0x100 [ 74.051118][ T4303] hci_send_frame+0x1a9/0x2e0 [ 74.056337][ T4303] hci_tx_work+0x9f9/0x1710 [ 74.061392][ T4303] process_one_work+0x85f/0x1010 [ 74.066879][ T4303] worker_thread+0xaa6/0x1290 [ 74.072213][ T4303] kthread+0x436/0x520 [ 74.076829][ T4303] ret_from_fork+0x1f/0x30 [ 74.081788][ T4303] [ 74.081788][ T4303] -> #2 ((work_completion)(&hdev->tx_work)){+.+.}-{0:0}: [ 74.091025][ T4303] __flush_work+0x116/0x210 [ 74.096070][ T4303] hci_dev_do_close+0x1e7/0x1030 [ 74.101688][ T4303] hci_unregister_dev+0x2d7/0x580 [ 74.107274][ T4303] vhci_release+0x73/0xc0 [ 74.112279][ T4303] __fput+0x234/0x930 [ 74.116809][ T4303] task_work_run+0x125/0x1a0 [ 74.121942][ T4303] do_exit+0x626/0x20c0 [ 74.126640][ T4303] do_group_exit+0x12e/0x300 [ 74.131917][ T4303] get_signal+0x6ca/0x12c0 [ 74.137044][ T4303] arch_do_signal_or_restart+0xe7/0x12c0 [ 74.143238][ T4303] exit_to_user_mode_loop+0x9e/0x130 [ 74.149179][ T4303] exit_to_user_mode_prepare+0xee/0x180 [ 74.155286][ T4303] syscall_exit_to_user_mode+0x16/0x40 [ 74.161301][ T4303] do_syscall_64+0x58/0xa0 [ 74.166260][ T4303] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 74.172698][ T4303] [ 74.172698][ T4303] -> #1 (&hdev->req_lock){+.+.}-{3:3}: [ 74.180375][ T4303] __mutex_lock_common+0x1e3/0x2400 [ 74.186127][ T4303] mutex_lock_nested+0x17/0x20 [ 74.191447][ T4303] bg_scan_update+0x44/0x3b0 [ 74.196587][ T4303] process_one_work+0x85f/0x1010 [ 74.202135][ T4303] worker_thread+0xaa6/0x1290 [ 74.207370][ T4303] kthread+0x436/0x520 [ 74.211983][ T4303] ret_from_fork+0x1f/0x30 [ 74.216942][ T4303] [ 74.216942][ T4303] -> #0 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}: [ 74.226781][ T4303] __lock_acquire+0x2c42/0x7d10 [ 74.232181][ T4303] lock_acquire+0x19e/0x400 [ 74.237240][ T4303] __flush_work+0x116/0x210 [ 74.242291][ T4303] __cancel_work_timer+0x3f4/0x560 [ 74.247960][ T4303] hci_request_cancel_all+0xcc/0x300 [ 74.253895][ T4303] hci_dev_do_close+0x4e/0x1030 [ 74.259299][ T4303] hci_rfkill_set_block+0x10a/0x190 [ 74.265047][ T4303] rfkill_set_block+0x1c9/0x3d0 [ 74.270448][ T4303] rfkill_fop_write+0x452/0x560 [ 74.275844][ T4303] vfs_write+0x30b/0xd60 [ 74.280631][ T4303] ksys_write+0x152/0x260 [ 74.285506][ T4303] do_syscall_64+0x4c/0xa0 [ 74.290471][ T4303] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 74.296916][ T4303] [ 74.296916][ T4303] other info that might help us debug this: [ 74.296916][ T4303] [ 74.307162][ T4303] Chain exists of: [ 74.307162][ T4303] (work_completion)(&hdev->bg_scan_update) --> &data->open_mutex --> rfkill_global_mutex [ 74.307162][ T4303] [ 74.323021][ T4303] Possible unsafe locking scenario: [ 74.323021][ T4303] [ 74.330493][ T4303] CPU0 CPU1 [ 74.335879][ T4303] ---- ---- [ 74.341266][ T4303] lock(rfkill_global_mutex); [ 74.346059][ T4303] lock(&data->open_mutex); [ 74.353195][ T4303] lock(rfkill_global_mutex); [ 74.360506][ T4303] lock((work_completion)(&hdev->bg_scan_update)); [ 74.367117][ T4303] [ 74.367117][ T4303] *** DEADLOCK *** [ 74.367117][ T4303] [ 74.375374][ T4303] 1 lock held by syz.0.17/4303: [ 74.380238][ T4303] #0: ffffffff8d6c5de8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x18b/0x560 [ 74.390364][ T4303] [ 74.390364][ T4303] stack backtrace: [ 74.396266][ T4303] CPU: 0 PID: 4303 Comm: syz.0.17 Not tainted syzkaller #0 [ 74.403487][ T4303] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 74.413644][ T4303] Call Trace: [ 74.416945][ T4303] [ 74.419898][ T4303] dump_stack_lvl+0x188/0x250 [ 74.424598][ T4303] ? load_image+0x400/0x400 [ 74.429122][ T4303] ? show_regs_print_info+0x20/0x20 [ 74.434346][ T4303] ? print_circular_bug+0x12b/0x1a0 [ 74.439573][ T4303] check_noncircular+0x296/0x330 [ 74.444537][ T4303] ? look_up_lock_class+0x71/0x110 [ 74.449673][ T4303] ? add_chain_block+0x940/0x940 [ 74.454635][ T4303] ? lockdep_lock+0xf1/0x1f0 [ 74.459253][ T4303] ? __lock_acquire+0x12e8/0x7d10 [ 74.464310][ T4303] ? mark_lock+0x94/0x320 [ 74.468660][ T4303] __lock_acquire+0x2c42/0x7d10 [ 74.473543][ T4303] ? verify_lock_unused+0x140/0x140 [ 74.478782][ T4303] ? verify_lock_unused+0x140/0x140 [ 74.484010][ T4303] ? mark_lock+0x94/0x320 [ 74.488366][ T4303] lock_acquire+0x19e/0x400 [ 74.492904][ T4303] ? __flush_work+0xfa/0x210 [ 74.497527][ T4303] ? __lock_acquire+0x7d10/0x7d10 [ 74.502575][ T4303] ? read_lock_is_recursive+0x10/0x10 [ 74.507994][ T4303] ? start_flush_work+0x776/0x820 [ 74.513044][ T4303] __flush_work+0x116/0x210 [ 74.517569][ T4303] ? __flush_work+0xfa/0x210 [ 74.522182][ T4303] ? flush_work+0x20/0x20 [ 74.526538][ T4303] ? try_to_grab_pending+0xfa/0x7f0 [ 74.531760][ T4303] ? mark_lock+0x94/0x320 [ 74.536113][ T4303] ? lockdep_hardirqs_on_prepare+0x409/0x770 [ 74.542134][ T4303] ? lock_chain_count+0x20/0x20 [ 74.547020][ T4303] ? mark_lock+0x94/0x320 [ 74.551377][ T4303] ? __cancel_work_timer+0x36a/0x560 [ 74.556691][ T4303] __cancel_work_timer+0x3f4/0x560 [ 74.561826][ T4303] ? cancel_work_sync+0x20/0x20 [ 74.566701][ T4303] ? __cancel_work+0x1f9/0x2e0 [ 74.571486][ T4303] ? lockdep_hardirqs_on+0x94/0x140 [ 74.576718][ T4303] ? __cancel_work+0x27b/0x2e0 [ 74.581505][ T4303] ? cancel_work+0x20/0x20 [ 74.585948][ T4303] ? lock_chain_count+0x20/0x20 [ 74.590836][ T4303] hci_request_cancel_all+0xcc/0x300 [ 74.596157][ T4303] hci_dev_do_close+0x4e/0x1030 [ 74.601038][ T4303] ? _raw_spin_unlock_irqrestore+0xc1/0x120 [ 74.606950][ T4303] ? _raw_spin_unlock+0x40/0x40 [ 74.611820][ T4303] hci_rfkill_set_block+0x10a/0x190 [ 74.617059][ T4303] ? rcu_lock_release+0x20/0x20 [ 74.621934][ T4303] rfkill_set_block+0x1c9/0x3d0 [ 74.626812][ T4303] rfkill_fop_write+0x452/0x560 [ 74.631687][ T4303] ? rfkill_fop_read+0x520/0x520 [ 74.636652][ T4303] ? common_file_perm+0x140/0x1c0 [ 74.641718][ T4303] ? fsnotify_perm+0x5d/0x560 [ 74.646426][ T4303] ? security_file_permission+0x75/0xa0 [ 74.651996][ T4303] ? rfkill_fop_read+0x520/0x520 [ 74.656961][ T4303] vfs_write+0x30b/0xd60 [ 74.661229][ T4303] ? file_end_write+0x250/0x250 [ 74.666105][ T4303] ? __context_tracking_exit+0x4c/0x80 [ 74.671615][ T4303] ? __lock_acquire+0x7d10/0x7d10 [ 74.676669][ T4303] ? __fdget_pos+0x1e2/0x370 [ 74.681297][ T4303] ksys_write+0x152/0x260 [ 74.685651][ T4303] ? __ia32_sys_read+0x80/0x80 [ 74.690438][ T4303] ? lockdep_hardirqs_on+0x94/0x140 [ 74.695669][ T4303] do_syscall_64+0x4c/0xa0 [ 74.701760][ T4303] ? clear_bhb_loop+0x30/0x80 [ 74.706498][ T4303] ? clear_bhb_loop+0x30/0x80 [ 74.711556][ T4303] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 74.717477][ T4303] RIP: 0033:0x7f694e8d2dd9 [ 74.721917][ T4303] 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 [ 74.741559][ T4303] RSP: 002b:00007ffe74ef34d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 74.750005][ T4303] RAX: ffffffffffffffda RBX: 00007f694eb4bfa0 RCX: 00007f694e8d2dd9 [ 74.758006][ T4303] RDX: 0000000000000008 RSI: 0000200000000080 RDI: 0000000000000003 [ 74.766006][ T4303] RBP: 00007f694e968d69 R08: 0000000000000000 R09: 0000000000000000 [ 74.774019][ T4303] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 74.782026][ T4303] R13: 00007f694eb4bfac R14: 00007f694eb4bfa0 R15: 00007f694eb4bfa0 [ 74.790050][ T4303] [ 74.812359][ T4251] Bluetooth: hci0: command 0x040f tx timeout