Warning: Permanently added '10.128.0.40' (ED25519) to the list of known hosts. 2026/04/06 10:06:19 parsed 1 programs [ 67.667613][ T4190] cgroup: Unknown subsys name 'net' [ 67.836486][ T4190] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size = 127995904 bytes [ 69.364184][ T4190] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k FS [ 70.859531][ T4202] chnl_net:caif_netlink_parms(): no params data found [ 70.904987][ T4202] bridge0: port 1(bridge_slave_0) entered blocking state [ 70.913124][ T4202] bridge0: port 1(bridge_slave_0) entered disabled state [ 70.921776][ T4202] device bridge_slave_0 entered promiscuous mode [ 70.932269][ T4202] bridge0: port 2(bridge_slave_1) entered blocking state [ 70.939708][ T4202] bridge0: port 2(bridge_slave_1) entered disabled state [ 70.947781][ T4202] device bridge_slave_1 entered promiscuous mode [ 70.969696][ T4202] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 70.981119][ T4202] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 71.005437][ T4202] team0: Port device team_slave_0 added [ 71.013466][ T4202] team0: Port device team_slave_1 added [ 71.032604][ T4202] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 71.040462][ T4202] 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. [ 71.067656][ T4202] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 71.081329][ T4202] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 71.088316][ T4202] 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. [ 71.116086][ T4202] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 71.148175][ T4202] device hsr_slave_0 entered promiscuous mode [ 71.156063][ T4202] device hsr_slave_1 entered promiscuous mode [ 71.259653][ T4202] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 71.270139][ T4202] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 71.284011][ T4202] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 71.293986][ T4202] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 71.316054][ T4202] bridge0: port 2(bridge_slave_1) entered blocking state [ 71.324577][ T4202] bridge0: port 2(bridge_slave_1) entered forwarding state [ 71.332825][ T4202] bridge0: port 1(bridge_slave_0) entered blocking state [ 71.340045][ T4202] bridge0: port 1(bridge_slave_0) entered forwarding state [ 71.387384][ T4202] 8021q: adding VLAN 0 to HW filter on device bond0 [ 71.406539][ T1158] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 71.419374][ T1158] bridge0: port 1(bridge_slave_0) entered disabled state [ 71.432039][ T1158] bridge0: port 2(bridge_slave_1) entered disabled state [ 71.443307][ T1158] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 71.459635][ T4202] 8021q: adding VLAN 0 to HW filter on device team0 [ 71.474997][ T1158] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 71.486575][ T1158] bridge0: port 1(bridge_slave_0) entered blocking state [ 71.494051][ T1158] bridge0: port 1(bridge_slave_0) entered forwarding state [ 71.514109][ T1158] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 71.524749][ T1158] bridge0: port 2(bridge_slave_1) entered blocking state [ 71.532201][ T1158] bridge0: port 2(bridge_slave_1) entered forwarding state [ 71.555492][ T1158] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 71.575505][ T1158] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 71.585728][ T1158] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 71.594888][ T1158] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 71.609619][ T4202] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 71.621694][ T4202] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 71.631722][ T1158] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 71.743992][ T1433] ieee802154 phy0 wpan0: encryption failed: -22 [ 71.751004][ T1433] ieee802154 phy1 wpan1: encryption failed: -22 [ 71.783447][ T1158] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 71.792031][ T1158] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 71.806034][ T4202] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 71.830241][ T1158] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 71.855980][ T1158] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 71.866401][ T1158] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 71.878772][ T4202] device veth0_vlan entered promiscuous mode [ 71.886153][ T1158] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 71.895731][ T1158] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 71.921941][ T4202] device veth1_vlan entered promiscuous mode [ 71.948221][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 71.958063][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 71.966998][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 71.976477][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 71.988835][ T4202] device veth0_macvtap entered promiscuous mode [ 72.001168][ T4202] device veth1_macvtap entered promiscuous mode [ 72.026544][ T4202] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 72.034626][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 72.044825][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 72.053973][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 72.064204][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 72.077493][ T4202] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 72.086580][ T1158] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 72.097045][ T1158] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 72.113084][ T4202] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 72.122458][ T4202] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 72.134449][ T4202] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 72.151994][ T4202] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 72.321631][ T4202] syz-executor (4202) used greatest stack depth: 20504 bytes left [ 72.846271][ T144] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 74.876062][ T144] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 76.865490][ T144] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 76.917817][ T144] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 78.050418][ T144] device hsr_slave_0 left promiscuous mode [ 78.082878][ T144] device hsr_slave_1 left promiscuous mode [ 78.097181][ T144] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 78.107627][ T144] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 78.117462][ T144] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 78.127230][ T144] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 78.135794][ T144] device bridge_slave_1 left promiscuous mode [ 78.154363][ T144] bridge0: port 2(bridge_slave_1) entered disabled state [ 78.175820][ T144] device bridge_slave_0 left promiscuous mode [ 78.182991][ T144] bridge0: port 1(bridge_slave_0) entered disabled state [ 78.200225][ T144] device veth1_macvtap left promiscuous mode [ 78.206794][ T144] device veth0_macvtap left promiscuous mode [ 78.213461][ T144] device veth1_vlan left promiscuous mode [ 78.220152][ T144] device veth0_vlan left promiscuous mode [ 78.378089][ T144] team0 (unregistering): Port device team_slave_1 removed [ 78.392659][ T144] team0 (unregistering): Port device team_slave_0 removed [ 78.405768][ T144] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 78.419893][ T144] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 78.472547][ T144] bond0 (unregistering): Released all slaves [ 78.663734][ T9] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 78.675778][ T9] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 78.688878][ T1158] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 78.728330][ T154] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 78.738075][ T154] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 78.747439][ T1158] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2026/04/06 10:06:33 executed programs: 0 [ 80.242721][ T4344] chnl_net:caif_netlink_parms(): no params data found [ 80.382124][ T4344] bridge0: port 1(bridge_slave_0) entered blocking state [ 80.400381][ T4344] bridge0: port 1(bridge_slave_0) entered disabled state [ 80.409200][ T4344] device bridge_slave_0 entered promiscuous mode [ 80.432733][ T4344] bridge0: port 2(bridge_slave_1) entered blocking state [ 80.451408][ T4344] bridge0: port 2(bridge_slave_1) entered disabled state [ 80.460044][ T4344] device bridge_slave_1 entered promiscuous mode [ 80.515291][ T4344] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 80.543177][ T4344] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 80.595757][ T4344] team0: Port device team_slave_0 added [ 80.606869][ T4344] team0: Port device team_slave_1 added [ 80.634850][ T4344] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 80.642747][ T4344] 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. [ 80.670231][ T4344] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 80.692025][ T4344] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 80.701866][ T4344] 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. [ 80.731808][ T4344] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 80.769170][ T4344] device hsr_slave_0 entered promiscuous mode [ 80.776531][ T4344] device hsr_slave_1 entered promiscuous mode [ 81.607031][ T4344] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 81.617085][ T4344] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 81.629477][ T4344] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 81.642787][ T4344] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 81.715161][ T4344] 8021q: adding VLAN 0 to HW filter on device bond0 [ 81.759789][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 81.771372][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 81.782748][ T4344] 8021q: adding VLAN 0 to HW filter on device team0 [ 81.795150][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 81.808605][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 81.818755][ T154] bridge0: port 1(bridge_slave_0) entered blocking state [ 81.826018][ T154] bridge0: port 1(bridge_slave_0) entered forwarding state [ 81.842093][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 81.853447][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 81.864281][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 81.876132][ T154] bridge0: port 2(bridge_slave_1) entered blocking state [ 81.884477][ T154] bridge0: port 2(bridge_slave_1) entered forwarding state [ 81.941081][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 81.951361][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 81.962228][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 81.971675][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 81.984101][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 82.031876][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 82.041772][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 82.059589][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 82.069620][ T4255] Bluetooth: hci0: command 0x0409 tx timeout [ 82.070197][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 82.121318][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 82.130089][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 82.148135][ T4344] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 82.344722][ T1240] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 82.353480][ T1240] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 82.368903][ T4344] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 82.422574][ T1240] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 82.433810][ T1240] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 82.488140][ T4344] device veth0_vlan entered promiscuous mode [ 82.495823][ T1240] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 82.507830][ T1240] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 82.549249][ T1240] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 82.558509][ T1240] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 82.573965][ T4344] device veth1_vlan entered promiscuous mode [ 82.624464][ T1240] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 82.637685][ T1240] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 82.647816][ T1240] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 82.658591][ T1240] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 82.686481][ T4344] device veth0_macvtap entered promiscuous mode [ 82.697301][ T4344] device veth1_macvtap entered promiscuous mode [ 82.716666][ T4344] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 82.724751][ T1240] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 82.736188][ T1240] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 82.745392][ T1240] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 82.756101][ T1240] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 82.774627][ T4344] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 82.792319][ T1158] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 82.804209][ T1158] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 82.847176][ T4344] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 82.857223][ T4344] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 82.866416][ T4344] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 82.875857][ T4344] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 82.946890][ T1240] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 82.960002][ T1240] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 82.984339][ T1158] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 82.999628][ T1158] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 83.012706][ T1158] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 83.027232][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 83.183594][ T4455] [ 83.186018][ T4455] ====================================================== [ 83.193259][ T4455] WARNING: possible circular locking dependency detected [ 83.200562][ T4455] syzkaller #0 Not tainted [ 83.205359][ T4455] ------------------------------------------------------ [ 83.212770][ T4455] syz.0.17/4455 is trying to acquire lock: [ 83.218597][ T4455] ffff888077be8c28 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}, at: __flush_work+0xfa/0x210 [ 83.229813][ T4455] [ 83.229813][ T4455] but task is already holding lock: [ 83.237292][ T4455] ffffffff8d6c51a8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x18b/0x560 [ 83.247008][ T4455] [ 83.247008][ T4455] which lock already depends on the new lock. [ 83.247008][ T4455] [ 83.257452][ T4455] [ 83.257452][ T4455] the existing dependency chain (in reverse order) is: [ 83.266715][ T4455] [ 83.266715][ T4455] -> #4 (rfkill_global_mutex){+.+.}-{3:3}: [ 83.274936][ T4455] __mutex_lock_common+0x1e3/0x2400 [ 83.280960][ T4455] mutex_lock_nested+0x17/0x20 [ 83.286556][ T4455] rfkill_register+0x33/0x8a0 [ 83.291791][ T4455] hci_register_dev+0x452/0x970 [ 83.297822][ T4455] vhci_create_device+0x32c/0x5c0 [ 83.303412][ T4455] vhci_write+0x391/0x450 [ 83.308318][ T4455] vfs_write+0x745/0xd60 [ 83.313285][ T4455] ksys_write+0x152/0x260 [ 83.318161][ T4455] do_syscall_64+0x4c/0xa0 [ 83.323269][ T4455] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 83.329704][ T4455] [ 83.329704][ T4455] -> #3 (&data->open_mutex){+.+.}-{3:3}: [ 83.337637][ T4455] __mutex_lock_common+0x1e3/0x2400 [ 83.343911][ T4455] mutex_lock_nested+0x17/0x20 [ 83.349351][ T4455] vhci_send_frame+0x88/0x100 [ 83.354672][ T4455] hci_send_frame+0x1a9/0x2e0 [ 83.360370][ T4455] hci_tx_work+0x9f9/0x1710 [ 83.365433][ T4455] process_one_work+0x85f/0x1010 [ 83.371228][ T4455] worker_thread+0xaa6/0x1290 [ 83.376481][ T4455] kthread+0x436/0x520 [ 83.381231][ T4455] ret_from_fork+0x1f/0x30 [ 83.386203][ T4455] [ 83.386203][ T4455] -> #2 ((work_completion)(&hdev->tx_work)){+.+.}-{0:0}: [ 83.395544][ T4455] __flush_work+0x116/0x210 [ 83.400601][ T4455] hci_dev_do_close+0x1e7/0x1030 [ 83.406103][ T4455] hci_unregister_dev+0x2d7/0x580 [ 83.412200][ T4455] vhci_release+0x73/0xc0 [ 83.417286][ T4455] __fput+0x234/0x930 [ 83.421994][ T4455] task_work_run+0x125/0x1a0 [ 83.427230][ T4455] do_exit+0x626/0x20c0 [ 83.432020][ T4455] do_group_exit+0x12e/0x300 [ 83.437329][ T4455] get_signal+0x6ca/0x12c0 [ 83.442515][ T4455] arch_do_signal_or_restart+0xe7/0x12c0 [ 83.448914][ T4455] exit_to_user_mode_loop+0x9e/0x130 [ 83.455020][ T4455] exit_to_user_mode_prepare+0xee/0x180 [ 83.461300][ T4455] syscall_exit_to_user_mode+0x16/0x40 [ 83.467397][ T4455] do_syscall_64+0x58/0xa0 [ 83.472413][ T4455] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 83.478960][ T4455] [ 83.478960][ T4455] -> #1 (&hdev->req_lock){+.+.}-{3:3}: [ 83.486638][ T4455] __mutex_lock_common+0x1e3/0x2400 [ 83.492662][ T4455] mutex_lock_nested+0x17/0x20 [ 83.498062][ T4455] bg_scan_update+0x44/0x3b0 [ 83.503286][ T4455] process_one_work+0x85f/0x1010 [ 83.508864][ T4455] worker_thread+0xaa6/0x1290 [ 83.514096][ T4455] kthread+0x436/0x520 [ 83.518739][ T4455] ret_from_fork+0x1f/0x30 [ 83.523909][ T4455] [ 83.523909][ T4455] -> #0 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}: [ 83.533917][ T4455] __lock_acquire+0x2c42/0x7d10 [ 83.539526][ T4455] lock_acquire+0x19e/0x400 [ 83.544679][ T4455] __flush_work+0x116/0x210 [ 83.549943][ T4455] __cancel_work_timer+0x3f4/0x560 [ 83.556387][ T4455] hci_request_cancel_all+0xcc/0x300 [ 83.562460][ T4455] hci_dev_do_close+0x4e/0x1030 [ 83.569473][ T4455] hci_rfkill_set_block+0x10a/0x190 [ 83.575327][ T4455] rfkill_set_block+0x1c6/0x420 [ 83.581146][ T4455] rfkill_fop_write+0x452/0x560 [ 83.586565][ T4455] vfs_write+0x30b/0xd60 [ 83.591525][ T4455] ksys_write+0x152/0x260 [ 83.596563][ T4455] do_syscall_64+0x4c/0xa0 [ 83.601533][ T4455] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 83.608065][ T4455] [ 83.608065][ T4455] other info that might help us debug this: [ 83.608065][ T4455] [ 83.618565][ T4455] Chain exists of: [ 83.618565][ T4455] (work_completion)(&hdev->bg_scan_update) --> &data->open_mutex --> rfkill_global_mutex [ 83.618565][ T4455] [ 83.635102][ T4455] Possible unsafe locking scenario: [ 83.635102][ T4455] [ 83.643365][ T4455] CPU0 CPU1 [ 83.649469][ T4455] ---- ---- [ 83.655112][ T4455] lock(rfkill_global_mutex); [ 83.660292][ T4455] lock(&data->open_mutex); [ 83.667505][ T4455] lock(rfkill_global_mutex); [ 83.674965][ T4455] lock((work_completion)(&hdev->bg_scan_update)); [ 83.681780][ T4455] [ 83.681780][ T4455] *** DEADLOCK *** [ 83.681780][ T4455] [ 83.690249][ T4455] 1 lock held by syz.0.17/4455: [ 83.695674][ T4455] #0: ffffffff8d6c51a8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x18b/0x560 [ 83.706265][ T4455] [ 83.706265][ T4455] stack backtrace: [ 83.712419][ T4455] CPU: 1 PID: 4455 Comm: syz.0.17 Not tainted syzkaller #0 [ 83.719790][ T4455] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 83.729933][ T4455] Call Trace: [ 83.733238][ T4455] [ 83.736172][ T4455] dump_stack_lvl+0x188/0x250 [ 83.741122][ T4455] ? load_image+0x400/0x400 [ 83.745885][ T4455] ? show_regs_print_info+0x20/0x20 [ 83.751252][ T4455] ? print_circular_bug+0x12b/0x1a0 [ 83.756456][ T4455] check_noncircular+0x296/0x330 [ 83.762185][ T4455] ? look_up_lock_class+0x71/0x110 [ 83.767409][ T4455] ? add_chain_block+0x940/0x940 [ 83.772716][ T4455] ? lockdep_lock+0xf1/0x1f0 [ 83.777518][ T4455] ? __lock_acquire+0x12e8/0x7d10 [ 83.782799][ T4455] ? mark_lock+0x94/0x320 [ 83.787330][ T4455] __lock_acquire+0x2c42/0x7d10 [ 83.792412][ T4455] ? verify_lock_unused+0x140/0x140 [ 83.797854][ T4455] ? verify_lock_unused+0x140/0x140 [ 83.803316][ T4455] ? mark_lock+0x94/0x320 [ 83.807770][ T4455] lock_acquire+0x19e/0x400 [ 83.812374][ T4455] ? __flush_work+0xfa/0x210 [ 83.816964][ T4455] ? __lock_acquire+0x7d10/0x7d10 [ 83.822223][ T4455] ? read_lock_is_recursive+0x10/0x10 [ 83.827893][ T4455] ? start_flush_work+0x776/0x820 [ 83.834511][ T4455] __flush_work+0x116/0x210 [ 83.839055][ T4455] ? __flush_work+0xfa/0x210 [ 83.843754][ T4455] ? flush_work+0x20/0x20 [ 83.848309][ T4455] ? try_to_grab_pending+0xfa/0x7f0 [ 83.854047][ T4455] ? mark_lock+0x94/0x320 [ 83.858662][ T4455] ? lockdep_hardirqs_on_prepare+0x409/0x770 [ 83.864667][ T4455] ? lock_chain_count+0x20/0x20 [ 83.869526][ T4455] ? mark_lock+0x94/0x320 [ 83.873954][ T4455] ? __cancel_work_timer+0x36a/0x560 [ 83.879511][ T4455] __cancel_work_timer+0x3f4/0x560 [ 83.885326][ T4455] ? cancel_work_sync+0x20/0x20 [ 83.890513][ T4455] ? __cancel_work+0x1f9/0x2e0 [ 83.895459][ T4455] ? lockdep_hardirqs_on+0x94/0x140 [ 83.900750][ T4455] ? __cancel_work+0x27b/0x2e0 [ 83.905617][ T4455] ? cancel_work+0x20/0x20 [ 83.910043][ T4455] ? lock_chain_count+0x20/0x20 [ 83.914930][ T4455] hci_request_cancel_all+0xcc/0x300 [ 83.920439][ T4455] hci_dev_do_close+0x4e/0x1030 [ 83.925310][ T4455] ? _raw_spin_unlock_irqrestore+0xc1/0x120 [ 83.931326][ T4455] ? _raw_spin_unlock+0x40/0x40 [ 83.936489][ T4455] hci_rfkill_set_block+0x10a/0x190 [ 83.941690][ T4455] ? rcu_lock_release+0x20/0x20 [ 83.946630][ T4455] rfkill_set_block+0x1c6/0x420 [ 83.951497][ T4455] rfkill_fop_write+0x452/0x560 [ 83.956540][ T4455] ? rfkill_fop_read+0x4d0/0x4d0 [ 83.961516][ T4455] ? common_file_perm+0x110/0x1c0 [ 83.966545][ T4455] ? fsnotify_perm+0x5d/0x560 [ 83.971412][ T4455] ? security_file_permission+0x75/0xa0 [ 83.976963][ T4455] ? rfkill_fop_read+0x4d0/0x4d0 [ 83.981901][ T4455] vfs_write+0x30b/0xd60 [ 83.986322][ T4455] ? file_end_write+0x250/0x250 [ 83.991241][ T4455] ? __context_tracking_exit+0x4c/0x80 [ 83.996818][ T4455] ? __lock_acquire+0x7d10/0x7d10 [ 84.002248][ T4455] ? __fdget_pos+0x1e2/0x370 [ 84.007825][ T4455] ksys_write+0x152/0x260 [ 84.012840][ T4455] ? __ia32_sys_read+0x80/0x80 [ 84.018150][ T4455] ? lockdep_hardirqs_on+0x94/0x140 [ 84.023638][ T4455] do_syscall_64+0x4c/0xa0 [ 84.028315][ T4455] ? clear_bhb_loop+0x30/0x80 [ 84.033588][ T4455] ? clear_bhb_loop+0x30/0x80 [ 84.038947][ T4455] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 84.045548][ T4455] RIP: 0033:0x7f7165926819 [ 84.050608][ T4455] 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 [ 84.072555][ T4455] RSP: 002b:00007ffd029e0df8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 84.081100][ T4455] RAX: ffffffffffffffda RBX: 00007f7165b9ffa0 RCX: 00007f7165926819 [ 84.089829][ T4455] RDX: 0000000000000008 RSI: 0000200000000080 RDI: 0000000000000003 [ 84.098197][ T4455] RBP: 00007f71659bcc91 R08: 0000000000000000 R09: 0000000000000000 [ 84.106440][ T4455] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 84.114443][ T4455] R13: 00007f7165b9ffac R14: 00007f7165b9ffa0 R15: 00007f7165b9ffa0 [ 84.123051][ T4455] [ 84.140940][ T1107] Bluetooth: hci0: command 0x041b tx timeout