Warning: Permanently added '10.128.0.252' (ED25519) to the list of known hosts. 2026/01/16 08:16:12 parsed 1 programs [ 54.344283][ T4187] cgroup: Unknown subsys name 'net' [ 54.529822][ T4187] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size = 127995904 bytes [ 55.758406][ T4187] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k FS [ 58.343631][ T4233] chnl_net:caif_netlink_parms(): no params data found [ 58.403739][ T4233] bridge0: port 1(bridge_slave_0) entered blocking state [ 58.412445][ T4233] bridge0: port 1(bridge_slave_0) entered disabled state [ 58.420937][ T4233] device bridge_slave_0 entered promiscuous mode [ 58.431948][ T4233] bridge0: port 2(bridge_slave_1) entered blocking state [ 58.439438][ T4233] bridge0: port 2(bridge_slave_1) entered disabled state [ 58.448769][ T4233] device bridge_slave_1 entered promiscuous mode [ 58.477165][ T4233] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 58.489241][ T4233] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 58.519805][ T4233] team0: Port device team_slave_0 added [ 58.528221][ T4233] team0: Port device team_slave_1 added [ 58.553277][ T4233] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 58.560384][ T4233] 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. [ 58.586936][ T4233] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 58.599469][ T4233] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 58.606471][ T4233] 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. [ 58.632505][ T4233] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 58.668228][ T4233] device hsr_slave_0 entered promiscuous mode [ 58.676904][ T4233] device hsr_slave_1 entered promiscuous mode [ 58.788949][ T4233] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 58.799313][ T4233] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 58.808872][ T4233] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 58.819047][ T4233] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 58.877772][ T4233] bridge0: port 2(bridge_slave_1) entered blocking state [ 58.885996][ T4233] bridge0: port 2(bridge_slave_1) entered forwarding state [ 58.897179][ T4233] bridge0: port 1(bridge_slave_0) entered blocking state [ 58.904291][ T4233] bridge0: port 1(bridge_slave_0) entered forwarding state [ 58.980147][ T4233] 8021q: adding VLAN 0 to HW filter on device bond0 [ 58.992841][ T1596] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 59.002857][ T1596] bridge0: port 1(bridge_slave_0) entered disabled state [ 59.011934][ T1596] bridge0: port 2(bridge_slave_1) entered disabled state [ 59.024710][ T4233] 8021q: adding VLAN 0 to HW filter on device team0 [ 59.037098][ T1596] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 59.045906][ T1596] bridge0: port 1(bridge_slave_0) entered blocking state [ 59.053183][ T1596] bridge0: port 1(bridge_slave_0) entered forwarding state [ 59.063582][ T1596] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 59.072012][ T1596] bridge0: port 2(bridge_slave_1) entered blocking state [ 59.079117][ T1596] bridge0: port 2(bridge_slave_1) entered forwarding state [ 59.098280][ T1596] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 59.106923][ T1596] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 59.119309][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 59.130790][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 59.141623][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 59.152242][ T4233] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 59.229698][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 59.237878][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 59.263740][ T4233] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 59.280188][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 59.289555][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 59.324302][ T1596] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 59.333155][ T1596] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 59.342238][ T1596] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 59.350759][ T1596] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 59.360808][ T4233] device veth0_vlan entered promiscuous mode [ 59.390476][ T4233] device veth1_vlan entered promiscuous mode [ 59.408198][ T1596] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 59.417701][ T1596] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 59.426468][ T1596] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 59.435889][ T1596] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 59.447124][ T4233] device veth0_macvtap entered promiscuous mode [ 59.470547][ T4233] device veth1_macvtap entered promiscuous mode [ 59.484059][ T4233] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 59.492267][ T1596] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 59.500999][ T1596] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 59.510144][ T1596] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 59.518724][ T1596] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 59.530821][ T4233] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 59.552669][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 59.561532][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 59.572917][ T4233] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 59.581889][ T4233] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 59.591036][ T4233] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 59.599844][ T4233] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 59.702371][ T4233] syz-executor (4233) used greatest stack depth: 20608 bytes left [ 60.201822][ T9] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 60.221445][ T9] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 60.241119][ T1596] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 60.259305][ T1596] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 60.268568][ T1596] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 60.279096][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2026/01/16 08:16:20 executed programs: 0 [ 60.949038][ T4290] chnl_net:caif_netlink_parms(): no params data found [ 61.005455][ T4290] bridge0: port 1(bridge_slave_0) entered blocking state [ 61.012609][ T4290] bridge0: port 1(bridge_slave_0) entered disabled state [ 61.020560][ T4290] device bridge_slave_0 entered promiscuous mode [ 61.030016][ T4290] bridge0: port 2(bridge_slave_1) entered blocking state [ 61.037193][ T4290] bridge0: port 2(bridge_slave_1) entered disabled state [ 61.045139][ T4290] device bridge_slave_1 entered promiscuous mode [ 61.065872][ T4290] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 61.077369][ T4290] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 61.104501][ T4290] team0: Port device team_slave_0 added [ 61.112993][ T4290] team0: Port device team_slave_1 added [ 61.137076][ T4290] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 61.144054][ 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. [ 61.170858][ T4290] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 61.184809][ T4290] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 61.191774][ 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. [ 61.217775][ T4290] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 61.247608][ T4290] device hsr_slave_0 entered promiscuous mode [ 61.255903][ T4290] device hsr_slave_1 entered promiscuous mode [ 61.262473][ T4290] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 61.271311][ T4290] Cannot create hsr debugfs directory [ 61.339234][ T144] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 62.855536][ T7] Bluetooth: hci0: command 0x0409 tx timeout [ 64.590666][ T144] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 64.789939][ T144] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 64.841842][ T144] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 64.938568][ T7] Bluetooth: hci0: command 0x041b tx timeout [ 65.648418][ T4290] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 65.662836][ T4290] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 65.672949][ T4290] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 65.687347][ T4290] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 65.731978][ T4290] 8021q: adding VLAN 0 to HW filter on device bond0 [ 65.744382][ T1596] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 65.752573][ T1596] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 65.762457][ T4290] 8021q: adding VLAN 0 to HW filter on device team0 [ 65.787972][ T1596] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 65.796918][ T1596] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 65.805893][ T1596] bridge0: port 1(bridge_slave_0) entered blocking state [ 65.812940][ T1596] bridge0: port 1(bridge_slave_0) entered forwarding state [ 65.821422][ T1596] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 65.856497][ T392] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 65.865262][ T392] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 65.873589][ T392] bridge0: port 2(bridge_slave_1) entered blocking state [ 65.880679][ T392] bridge0: port 2(bridge_slave_1) entered forwarding state [ 65.889483][ T392] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 65.900530][ T392] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 65.909906][ T392] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 65.918494][ T392] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 65.927011][ T392] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 65.936102][ T392] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 65.944455][ T392] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 65.953205][ T392] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 65.961596][ T392] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 65.972128][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 65.981161][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 66.006684][ T4290] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 66.101542][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 66.109175][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 66.121732][ T4290] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 66.154584][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 66.163811][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 66.182366][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 66.191070][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 66.200059][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 66.207953][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 66.218099][ T4290] device veth0_vlan entered promiscuous mode [ 66.237882][ T4290] device veth1_vlan entered promiscuous mode [ 66.262215][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 66.271071][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 66.279184][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 66.288026][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 66.300045][ T4290] device veth0_macvtap entered promiscuous mode [ 66.312932][ T4290] device veth1_macvtap entered promiscuous mode [ 66.327997][ T144] device hsr_slave_0 left promiscuous mode [ 66.334475][ T144] device hsr_slave_1 left promiscuous mode [ 66.341717][ T144] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 66.349468][ T144] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 66.357760][ T144] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 66.365809][ T144] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 66.373435][ T144] device bridge_slave_1 left promiscuous mode [ 66.381722][ T144] bridge0: port 2(bridge_slave_1) entered disabled state [ 66.393876][ T144] device bridge_slave_0 left promiscuous mode [ 66.401660][ T144] bridge0: port 1(bridge_slave_0) entered disabled state [ 66.419640][ T144] device veth1_macvtap left promiscuous mode [ 66.425982][ T144] device veth0_macvtap left promiscuous mode [ 66.432001][ T144] device veth1_vlan left promiscuous mode [ 66.438554][ T144] device veth0_vlan left promiscuous mode [ 66.571816][ T144] team0 (unregistering): Port device team_slave_1 removed [ 66.587837][ T144] team0 (unregistering): Port device team_slave_0 removed [ 66.600142][ T144] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 66.613713][ T144] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 66.660627][ T144] bond0 (unregistering): Released all slaves [ 66.723398][ T4290] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 66.733031][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 66.741229][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 66.749788][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 66.759001][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 66.773130][ T4290] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 66.782349][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 66.791006][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 66.804062][ T4290] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 66.813188][ T4290] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 66.822189][ T4290] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 66.831241][ T4290] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 66.894273][ T154] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 66.911178][ T154] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 66.918190][ T392] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 66.922033][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 66.935856][ T392] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 66.947081][ T392] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 67.016115][ T4317] Bluetooth: hci0: command 0x040f tx timeout [ 67.054216][ T4350] [ 67.056579][ T4350] ====================================================== [ 67.063594][ T4350] WARNING: possible circular locking dependency detected [ 67.070625][ T4350] syzkaller #0 Not tainted [ 67.075037][ T4350] ------------------------------------------------------ [ 67.082055][ T4350] syz.0.17/4350 is trying to acquire lock: [ 67.087859][ T4350] ffff888025968c28 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}, at: __flush_work+0xc1/0x1b0 [ 67.098929][ T4350] [ 67.098929][ T4350] but task is already holding lock: [ 67.106289][ T4350] ffffffff8d4ba7e8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x19e/0x560 [ 67.115954][ T4350] [ 67.115954][ T4350] which lock already depends on the new lock. [ 67.115954][ T4350] [ 67.126354][ T4350] [ 67.126354][ T4350] the existing dependency chain (in reverse order) is: [ 67.135369][ T4350] [ 67.135369][ T4350] -> #4 (rfkill_global_mutex){+.+.}-{3:3}: [ 67.143369][ T4350] __mutex_lock_common+0x1eb/0x2390 [ 67.149099][ T4350] mutex_lock_nested+0x17/0x20 [ 67.154395][ T4350] rfkill_register+0x33/0x8a0 [ 67.159603][ T4350] hci_register_dev+0x452/0x970 [ 67.164982][ T4350] vhci_create_device+0x32c/0x5c0 [ 67.170534][ T4350] vhci_write+0x391/0x450 [ 67.175499][ T4350] vfs_write+0x712/0xd00 [ 67.180273][ T4350] ksys_write+0x14d/0x250 [ 67.185134][ T4350] do_syscall_64+0x4c/0xa0 [ 67.190172][ T4350] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 67.196600][ T4350] [ 67.196600][ T4350] -> #3 (&data->open_mutex){+.+.}-{3:3}: [ 67.204425][ T4350] __mutex_lock_common+0x1eb/0x2390 [ 67.210158][ T4350] mutex_lock_nested+0x17/0x20 [ 67.215454][ T4350] vhci_send_frame+0x88/0x100 [ 67.220660][ T4350] hci_send_frame+0x1a9/0x2e0 [ 67.225864][ T4350] hci_tx_work+0x9f9/0x1710 [ 67.230897][ T4350] process_one_work+0x863/0x1000 [ 67.236365][ T4350] worker_thread+0xaa8/0x12a0 [ 67.241572][ T4350] kthread+0x436/0x520 [ 67.246162][ T4350] ret_from_fork+0x1f/0x30 [ 67.251210][ T4350] [ 67.251210][ T4350] -> #2 ((work_completion)(&hdev->tx_work)){+.+.}-{0:0}: [ 67.260424][ T4350] __flush_work+0xdd/0x1b0 [ 67.265371][ T4350] hci_dev_do_close+0x1e7/0x1030 [ 67.270836][ T4350] hci_unregister_dev+0x2d7/0x580 [ 67.276393][ T4350] vhci_release+0x73/0xc0 [ 67.281248][ T4350] __fput+0x234/0x930 [ 67.285846][ T4350] task_work_run+0x125/0x1a0 [ 67.290966][ T4350] do_exit+0x61e/0x20a0 [ 67.295651][ T4350] do_group_exit+0x12e/0x300 [ 67.300777][ T4350] get_signal+0x6ca/0x12c0 [ 67.305727][ T4350] arch_do_signal_or_restart+0xc1/0x1300 [ 67.311895][ T4350] exit_to_user_mode_loop+0x9e/0x130 [ 67.317711][ T4350] exit_to_user_mode_prepare+0xee/0x180 [ 67.323796][ T4350] syscall_exit_to_user_mode+0x16/0x40 [ 67.329787][ T4350] do_syscall_64+0x58/0xa0 [ 67.334817][ T4350] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 67.341244][ T4350] [ 67.341244][ T4350] -> #1 (&hdev->req_lock){+.+.}-{3:3}: [ 67.348895][ T4350] __mutex_lock_common+0x1eb/0x2390 [ 67.354626][ T4350] mutex_lock_nested+0x17/0x20 [ 67.359926][ T4350] bg_scan_update+0x44/0x3b0 [ 67.365047][ T4350] process_one_work+0x863/0x1000 [ 67.370513][ T4350] worker_thread+0xaa8/0x12a0 [ 67.375720][ T4350] kthread+0x436/0x520 [ 67.380312][ T4350] ret_from_fork+0x1f/0x30 [ 67.385258][ T4350] [ 67.385258][ T4350] -> #0 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}: [ 67.395079][ T4350] __lock_acquire+0x2c33/0x7c60 [ 67.400464][ T4350] lock_acquire+0x197/0x3f0 [ 67.405497][ T4350] __flush_work+0xdd/0x1b0 [ 67.410438][ T4350] __cancel_work_timer+0x3ac/0x520 [ 67.416076][ T4350] hci_request_cancel_all+0xcc/0x300 [ 67.421889][ T4350] hci_dev_do_close+0x4e/0x1030 [ 67.427265][ T4350] hci_rfkill_set_block+0x10a/0x190 [ 67.432991][ T4350] rfkill_set_block+0x1c6/0x420 [ 67.438453][ T4350] rfkill_fop_write+0x458/0x560 [ 67.443827][ T4350] vfs_write+0x300/0xd00 [ 67.448596][ T4350] ksys_write+0x14d/0x250 [ 67.453448][ T4350] do_syscall_64+0x4c/0xa0 [ 67.458395][ T4350] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 67.464816][ T4350] [ 67.464816][ T4350] other info that might help us debug this: [ 67.464816][ T4350] [ 67.475040][ T4350] Chain exists of: [ 67.475040][ T4350] (work_completion)(&hdev->bg_scan_update) --> &data->open_mutex --> rfkill_global_mutex [ 67.475040][ T4350] [ 67.490767][ T4350] Possible unsafe locking scenario: [ 67.490767][ T4350] [ 67.498215][ T4350] CPU0 CPU1 [ 67.503582][ T4350] ---- ---- [ 67.508949][ T4350] lock(rfkill_global_mutex); [ 67.513718][ T4350] lock(&data->open_mutex); [ 67.520844][ T4350] lock(rfkill_global_mutex); [ 67.528128][ T4350] lock((work_completion)(&hdev->bg_scan_update)); [ 67.534724][ T4350] [ 67.534724][ T4350] *** DEADLOCK *** [ 67.534724][ T4350] [ 67.542866][ T4350] 1 lock held by syz.0.17/4350: [ 67.547721][ T4350] #0: ffffffff8d4ba7e8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x19e/0x560 [ 67.557821][ T4350] [ 67.557821][ T4350] stack backtrace: [ 67.563721][ T4350] CPU: 1 PID: 4350 Comm: syz.0.17 Not tainted syzkaller #0 [ 67.570914][ T4350] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 [ 67.580984][ T4350] Call Trace: [ 67.584263][ T4350] [ 67.587197][ T4350] dump_stack_lvl+0x168/0x230 [ 67.591878][ T4350] ? load_image+0x3b0/0x3b0 [ 67.596390][ T4350] ? show_regs_print_info+0x20/0x20 [ 67.601602][ T4350] ? print_circular_bug+0x12b/0x1a0 [ 67.606813][ T4350] check_noncircular+0x274/0x310 [ 67.611756][ T4350] ? add_chain_block+0x940/0x940 [ 67.616702][ T4350] ? lockdep_lock+0xdc/0x1e0 [ 67.621303][ T4350] ? __lock_acquire+0x12d9/0x7c60 [ 67.626339][ T4350] ? lockdep_lock+0x1e0/0x1e0 [ 67.631027][ T4350] ? mark_lock+0x94/0x320 [ 67.635367][ T4350] ? _find_first_zero_bit+0xce/0xf0 [ 67.640577][ T4350] __lock_acquire+0x2c33/0x7c60 [ 67.645451][ T4350] ? verify_lock_unused+0x140/0x140 [ 67.650860][ T4350] ? verify_lock_unused+0x140/0x140 [ 67.656080][ T4350] lock_acquire+0x197/0x3f0 [ 67.660602][ T4350] ? __flush_work+0xc1/0x1b0 [ 67.665211][ T4350] ? __lock_acquire+0x7c60/0x7c60 [ 67.670249][ T4350] ? read_lock_is_recursive+0x10/0x10 [ 67.675633][ T4350] ? start_flush_work+0x776/0x820 [ 67.680678][ T4350] ? _raw_spin_unlock_irqrestore+0xaa/0x100 [ 67.686584][ T4350] ? _raw_spin_unlock+0x40/0x40 [ 67.691441][ T4350] __flush_work+0xdd/0x1b0 [ 67.695865][ T4350] ? __flush_work+0xc1/0x1b0 [ 67.700465][ T4350] ? flush_work+0x20/0x20 [ 67.704799][ T4350] ? try_to_grab_pending+0xf3/0x7e0 [ 67.710001][ T4350] ? lockdep_hardirqs_off+0x70/0x100 [ 67.715470][ T4350] ? mark_lock+0x94/0x320 [ 67.719813][ T4350] ? lockdep_hardirqs_on_prepare+0x3fc/0x760 [ 67.725808][ T4350] ? lock_chain_count+0x20/0x20 [ 67.730674][ T4350] ? mark_lock+0x94/0x320 [ 67.735018][ T4350] ? __cancel_work_timer+0x331/0x520 [ 67.740306][ T4350] __cancel_work_timer+0x3ac/0x520 [ 67.745430][ T4350] ? cancel_work_sync+0x20/0x20 [ 67.750293][ T4350] ? __cancel_work+0x1f4/0x2d0 [ 67.755080][ T4350] ? lockdep_hardirqs_on+0x94/0x140 [ 67.760290][ T4350] ? __cancel_work+0x26f/0x2d0 [ 67.765149][ T4350] ? cancel_work+0x20/0x20 [ 67.769571][ T4350] ? lock_chain_count+0x20/0x20 [ 67.774442][ T4350] hci_request_cancel_all+0xcc/0x300 [ 67.779740][ T4350] hci_dev_do_close+0x4e/0x1030 [ 67.784608][ T4350] ? _raw_spin_unlock_irqrestore+0xaa/0x100 [ 67.790514][ T4350] ? _raw_spin_unlock+0x40/0x40 [ 67.795380][ T4350] hci_rfkill_set_block+0x10a/0x190 [ 67.800593][ T4350] ? rcu_lock_release+0x20/0x20 [ 67.805457][ T4350] rfkill_set_block+0x1c6/0x420 [ 67.810323][ T4350] rfkill_fop_write+0x458/0x560 [ 67.815431][ T4350] ? verify_lock_unused+0x140/0x140 [ 67.820783][ T4350] ? rfkill_fop_read+0x4b0/0x4b0 [ 67.825738][ T4350] ? common_file_perm+0xc0/0x1c0 [ 67.830694][ T4350] ? fsnotify_perm+0x5d/0x560 [ 67.835407][ T4350] ? security_file_permission+0x75/0xa0 [ 67.840967][ T4350] ? rfkill_fop_read+0x4b0/0x4b0 [ 67.845919][ T4350] vfs_write+0x300/0xd00 [ 67.850183][ T4350] ? file_end_write+0x250/0x250 [ 67.855049][ T4350] ? __context_tracking_exit+0x4c/0x80 [ 67.860526][ T4350] ? __lock_acquire+0x7c60/0x7c60 [ 67.865569][ T4350] ? __fdget_pos+0x1e2/0x370 [ 67.870174][ T4350] ksys_write+0x14d/0x250 [ 67.874515][ T4350] ? __ia32_sys_read+0x80/0x80 [ 67.879286][ T4350] ? lockdep_hardirqs_on+0x94/0x140 [ 67.884682][ T4350] do_syscall_64+0x4c/0xa0 [ 67.889106][ T4350] ? clear_bhb_loop+0x30/0x80 [ 67.893793][ T4350] ? clear_bhb_loop+0x30/0x80 [ 67.898484][ T4350] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 67.904403][ T4350] RIP: 0033:0x7ff8a24ad749 [ 67.908835][ T4350] 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 [ 67.928539][ T4350] RSP: 002b:00007ffdf1fba238 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 67.936967][ T4350] RAX: ffffffffffffffda RBX: 00007ff8a2703fa0 RCX: 00007ff8a24ad749 [ 67.944949][ T4350] RDX: 0000000000000008 RSI: 0000200000000040 RDI: 0000000000000003 [ 67.952935][ T4350] RBP: 00007ff8a2531f91 R08: 0000000000000000 R09: 0000000000000000 [ 67.960932][ T4350] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 67.968994][ T4350] R13: 00007ff8a2703fa0 R14: 00007ff8a2703fa0 R15: 0000000000000003 [ 67.976983][ T4350]