Warning: Permanently added '10.128.1.179' (ED25519) to the list of known hosts. 2026/04/04 19:33:22 parsed 1 programs [ 62.018323][ T4190] cgroup: Unknown subsys name 'net' [ 62.149460][ T4190] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size = 127995904 bytes [ 63.650572][ T4190] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k FS [ 65.893662][ T4220] chnl_net:caif_netlink_parms(): no params data found [ 65.958581][ T4220] bridge0: port 1(bridge_slave_0) entered blocking state [ 65.966516][ T4220] bridge0: port 1(bridge_slave_0) entered disabled state [ 65.974971][ T4220] device bridge_slave_0 entered promiscuous mode [ 65.985034][ T4220] bridge0: port 2(bridge_slave_1) entered blocking state [ 65.992315][ T4220] bridge0: port 2(bridge_slave_1) entered disabled state [ 66.000725][ T4220] device bridge_slave_1 entered promiscuous mode [ 66.027134][ T4220] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 66.039837][ T4220] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 66.069924][ T4220] team0: Port device team_slave_0 added [ 66.080174][ T4220] team0: Port device team_slave_1 added [ 66.108458][ T4220] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 66.117007][ T4220] 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. [ 66.146063][ T4220] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 66.159640][ T4220] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 66.168214][ T4220] 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. [ 66.195927][ T4220] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 66.237944][ T4220] device hsr_slave_0 entered promiscuous mode [ 66.246349][ T4220] device hsr_slave_1 entered promiscuous mode [ 66.391018][ T4220] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 66.404206][ T4220] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 66.414491][ T4220] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 66.425616][ T4220] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 66.458287][ T4220] bridge0: port 2(bridge_slave_1) entered blocking state [ 66.465635][ T4220] bridge0: port 2(bridge_slave_1) entered forwarding state [ 66.473776][ T4220] bridge0: port 1(bridge_slave_0) entered blocking state [ 66.481168][ T4220] bridge0: port 1(bridge_slave_0) entered forwarding state [ 66.543292][ T4220] 8021q: adding VLAN 0 to HW filter on device bond0 [ 66.565734][ T4220] 8021q: adding VLAN 0 to HW filter on device team0 [ 66.572828][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 66.587351][ T144] bridge0: port 1(bridge_slave_0) entered disabled state [ 66.596433][ T144] bridge0: port 2(bridge_slave_1) entered disabled state [ 66.605897][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 66.628798][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 66.638229][ T144] bridge0: port 1(bridge_slave_0) entered blocking state [ 66.645369][ T144] bridge0: port 1(bridge_slave_0) entered forwarding state [ 66.656451][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 66.665580][ T144] bridge0: port 2(bridge_slave_1) entered blocking state [ 66.672648][ T144] bridge0: port 2(bridge_slave_1) entered forwarding state [ 66.696120][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 66.716802][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 66.727365][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 66.737515][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 66.747104][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 66.757708][ T4220] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 66.890323][ T1406] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 66.899862][ T1406] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 66.917278][ T4220] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 66.940022][ T1406] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 66.950792][ T1406] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 66.969572][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 66.978468][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 66.988100][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 67.001942][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 67.012317][ T4220] device veth0_vlan entered promiscuous mode [ 67.027486][ T4220] device veth1_vlan entered promiscuous mode [ 67.083738][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 67.092370][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 67.102197][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 67.112428][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 67.123952][ T4220] device veth0_macvtap entered promiscuous mode [ 67.132735][ T4220] device veth1_macvtap entered promiscuous mode [ 67.160331][ T4220] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 67.168263][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 67.177149][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 67.186025][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 67.194955][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 67.207693][ T4220] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 67.215175][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 67.225978][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 67.238895][ T4220] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 67.248059][ T4220] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 67.257171][ T4220] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 67.266173][ T4220] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 68.999163][ T144] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 69.017457][ T144] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 69.029152][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 69.052340][ T144] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 69.062094][ T144] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 69.070656][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2026/04/04 19:33:31 executed programs: 0 [ 69.540599][ T417] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 69.613964][ T4285] chnl_net:caif_netlink_parms(): no params data found [ 69.651127][ T4285] bridge0: port 1(bridge_slave_0) entered blocking state [ 69.658315][ T4285] bridge0: port 1(bridge_slave_0) entered disabled state [ 69.666363][ T4285] device bridge_slave_0 entered promiscuous mode [ 69.675473][ T4285] bridge0: port 2(bridge_slave_1) entered blocking state [ 69.682700][ T4285] bridge0: port 2(bridge_slave_1) entered disabled state [ 69.690971][ T4285] device bridge_slave_1 entered promiscuous mode [ 69.710747][ T4285] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 69.721845][ T4285] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 69.743295][ T4285] team0: Port device team_slave_0 added [ 69.750564][ T4285] team0: Port device team_slave_1 added [ 69.767196][ T4285] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 69.774242][ T4285] 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. [ 69.800240][ T4285] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 69.812127][ T4285] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 69.819143][ T4285] 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. [ 69.845060][ T4285] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 69.871469][ T4285] device hsr_slave_0 entered promiscuous mode [ 69.879497][ T4285] device hsr_slave_1 entered promiscuous mode [ 69.886494][ T4285] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 69.894717][ T4285] Cannot create hsr debugfs directory [ 71.396292][ T1429] ieee802154 phy0 wpan0: encryption failed: -22 [ 71.402785][ T1429] ieee802154 phy1 wpan1: encryption failed: -22 [ 71.555051][ T4239] Bluetooth: hci0: command 0x0409 tx timeout [ 72.120138][ T417] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 72.168804][ T417] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 72.240337][ T417] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 73.038081][ T4285] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 73.048281][ T4285] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 73.057201][ T4285] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 73.069222][ T4285] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 73.160750][ T4285] 8021q: adding VLAN 0 to HW filter on device bond0 [ 73.174477][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 73.182488][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 73.216419][ T4285] 8021q: adding VLAN 0 to HW filter on device team0 [ 73.226206][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 73.237745][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 73.246379][ T144] bridge0: port 1(bridge_slave_0) entered blocking state [ 73.253660][ T144] bridge0: port 1(bridge_slave_0) entered forwarding state [ 73.264440][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 73.287264][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 73.297352][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 73.306043][ T154] bridge0: port 2(bridge_slave_1) entered blocking state [ 73.313301][ T154] bridge0: port 2(bridge_slave_1) entered forwarding state [ 73.323057][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 73.332168][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 73.342517][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 73.352765][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 73.380538][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 73.390950][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 73.402090][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 73.416033][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 73.425393][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 73.438714][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 73.447602][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 73.458504][ T4285] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 73.606776][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 73.614627][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 73.633582][ T4240] Bluetooth: hci0: command 0x041b tx timeout [ 73.648870][ T4285] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 73.665317][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 73.674427][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 73.709043][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 73.717425][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 73.727687][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 73.736077][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 73.751080][ T4285] device veth0_vlan entered promiscuous mode [ 73.767735][ T4285] device veth1_vlan entered promiscuous mode [ 73.798497][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 73.808404][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 73.816807][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 73.825717][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 73.837371][ T4285] device veth0_macvtap entered promiscuous mode [ 73.849580][ T4285] device veth1_macvtap entered promiscuous mode [ 73.864897][ T417] device hsr_slave_0 left promiscuous mode [ 73.871682][ T417] device hsr_slave_1 left promiscuous mode [ 73.878954][ T417] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 73.886841][ T417] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 73.895232][ T417] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 73.902636][ T417] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 73.910790][ T417] device bridge_slave_1 left promiscuous mode [ 73.917842][ T417] bridge0: port 2(bridge_slave_1) entered disabled state [ 73.930511][ T417] device bridge_slave_0 left promiscuous mode [ 73.938096][ T417] bridge0: port 1(bridge_slave_0) entered disabled state [ 73.952961][ T417] device veth1_macvtap left promiscuous mode [ 73.960314][ T417] device veth0_macvtap left promiscuous mode [ 73.966601][ T417] device veth1_vlan left promiscuous mode [ 73.972504][ T417] device veth0_vlan left promiscuous mode [ 74.129237][ T417] team0 (unregistering): Port device team_slave_1 removed [ 74.141092][ T417] team0 (unregistering): Port device team_slave_0 removed [ 74.155587][ T417] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 74.168431][ T417] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 74.226056][ T417] bond0 (unregistering): Released all slaves [ 74.274907][ T4285] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 74.288307][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 74.296529][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 74.305049][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 74.314996][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 74.326418][ T4285] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 74.334917][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 74.345013][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 74.358688][ T4285] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 74.367760][ T4285] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 74.376946][ T4285] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 74.385885][ T4285] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 74.453463][ T144] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 74.461523][ T144] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 74.470952][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 74.503981][ T154] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 74.512040][ T154] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 74.520376][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 74.576258][ T4343] [ 74.578636][ T4343] ====================================================== [ 74.585749][ T4343] WARNING: possible circular locking dependency detected [ 74.592782][ T4343] syzkaller #0 Not tainted [ 74.597181][ T4343] ------------------------------------------------------ [ 74.604281][ T4343] syz.0.17/4343 is trying to acquire lock: [ 74.610069][ T4343] ffff888074858c28 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}, at: __flush_work+0xfa/0x210 [ 74.621187][ T4343] [ 74.621187][ T4343] but task is already holding lock: [ 74.628724][ T4343] ffffffff8d6c51a8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x18b/0x560 [ 74.638483][ T4343] [ 74.638483][ T4343] which lock already depends on the new lock. [ 74.638483][ T4343] [ 74.649255][ T4343] [ 74.649255][ T4343] the existing dependency chain (in reverse order) is: [ 74.658261][ T4343] [ 74.658261][ T4343] -> #4 (rfkill_global_mutex){+.+.}-{3:3}: [ 74.666256][ T4343] __mutex_lock_common+0x1e3/0x2400 [ 74.672144][ T4343] mutex_lock_nested+0x17/0x20 [ 74.677474][ T4343] rfkill_register+0x33/0x8a0 [ 74.682760][ T4343] hci_register_dev+0x452/0x970 [ 74.688220][ T4343] vhci_create_device+0x32c/0x5c0 [ 74.693759][ T4343] vhci_write+0x391/0x450 [ 74.698603][ T4343] vfs_write+0x745/0xd60 [ 74.703369][ T4343] ksys_write+0x152/0x260 [ 74.708226][ T4343] do_syscall_64+0x4c/0xa0 [ 74.713239][ T4343] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 74.719729][ T4343] [ 74.719729][ T4343] -> #3 (&data->open_mutex){+.+.}-{3:3}: [ 74.727538][ T4343] __mutex_lock_common+0x1e3/0x2400 [ 74.733247][ T4343] mutex_lock_nested+0x17/0x20 [ 74.738518][ T4343] vhci_send_frame+0x88/0x100 [ 74.743914][ T4343] hci_send_frame+0x1a9/0x2e0 [ 74.749138][ T4343] hci_tx_work+0x9f9/0x1710 [ 74.754154][ T4343] process_one_work+0x85f/0x1010 [ 74.759738][ T4343] worker_thread+0xaa6/0x1290 [ 74.764923][ T4343] kthread+0x436/0x520 [ 74.769500][ T4343] ret_from_fork+0x1f/0x30 [ 74.774524][ T4343] [ 74.774524][ T4343] -> #2 ((work_completion)(&hdev->tx_work)){+.+.}-{0:0}: [ 74.783899][ T4343] __flush_work+0x116/0x210 [ 74.788930][ T4343] hci_dev_do_close+0x1e7/0x1030 [ 74.794554][ T4343] hci_unregister_dev+0x2d7/0x580 [ 74.800088][ T4343] vhci_release+0x73/0xc0 [ 74.804937][ T4343] __fput+0x234/0x930 [ 74.809429][ T4343] task_work_run+0x125/0x1a0 [ 74.814528][ T4343] do_exit+0x626/0x20c0 [ 74.819216][ T4343] do_group_exit+0x12e/0x300 [ 74.824324][ T4343] get_signal+0x6ca/0x12c0 [ 74.829370][ T4343] arch_do_signal_or_restart+0xe7/0x12c0 [ 74.835609][ T4343] exit_to_user_mode_loop+0x9e/0x130 [ 74.841655][ T4343] exit_to_user_mode_prepare+0xee/0x180 [ 74.847803][ T4343] syscall_exit_to_user_mode+0x16/0x40 [ 74.854468][ T4343] do_syscall_64+0x58/0xa0 [ 74.859411][ T4343] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 74.865810][ T4343] [ 74.865810][ T4343] -> #1 (&hdev->req_lock){+.+.}-{3:3}: [ 74.873447][ T4343] __mutex_lock_common+0x1e3/0x2400 [ 74.879167][ T4343] mutex_lock_nested+0x17/0x20 [ 74.884445][ T4343] bg_scan_update+0x44/0x3b0 [ 74.889542][ T4343] process_one_work+0x85f/0x1010 [ 74.895072][ T4343] worker_thread+0xaa6/0x1290 [ 74.900260][ T4343] kthread+0x436/0x520 [ 74.904854][ T4343] ret_from_fork+0x1f/0x30 [ 74.909779][ T4343] [ 74.909779][ T4343] -> #0 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}: [ 74.919662][ T4343] __lock_acquire+0x2c42/0x7d10 [ 74.925027][ T4343] lock_acquire+0x19e/0x400 [ 74.930146][ T4343] __flush_work+0x116/0x210 [ 74.935281][ T4343] __cancel_work_timer+0x3f4/0x560 [ 74.940902][ T4343] hci_request_cancel_all+0xcc/0x300 [ 74.946788][ T4343] hci_dev_do_close+0x4e/0x1030 [ 74.952262][ T4343] hci_rfkill_set_block+0x10a/0x190 [ 74.958076][ T4343] rfkill_set_block+0x1c6/0x420 [ 74.963532][ T4343] rfkill_fop_write+0x452/0x560 [ 74.968910][ T4343] vfs_write+0x30b/0xd60 [ 74.973835][ T4343] ksys_write+0x152/0x260 [ 74.978860][ T4343] do_syscall_64+0x4c/0xa0 [ 74.983788][ T4343] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 74.990206][ T4343] [ 74.990206][ T4343] other info that might help us debug this: [ 74.990206][ T4343] [ 75.000427][ T4343] Chain exists of: [ 75.000427][ T4343] (work_completion)(&hdev->bg_scan_update) --> &data->open_mutex --> rfkill_global_mutex [ 75.000427][ T4343] [ 75.016149][ T4343] Possible unsafe locking scenario: [ 75.016149][ T4343] [ 75.023703][ T4343] CPU0 CPU1 [ 75.029074][ T4343] ---- ---- [ 75.034604][ T4343] lock(rfkill_global_mutex); [ 75.039390][ T4343] lock(&data->open_mutex); [ 75.046492][ T4343] lock(rfkill_global_mutex); [ 75.053791][ T4343] lock((work_completion)(&hdev->bg_scan_update)); [ 75.060362][ T4343] [ 75.060362][ T4343] *** DEADLOCK *** [ 75.060362][ T4343] [ 75.068493][ T4343] 1 lock held by syz.0.17/4343: [ 75.073418][ T4343] #0: ffffffff8d6c51a8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x18b/0x560 [ 75.083532][ T4343] [ 75.083532][ T4343] stack backtrace: [ 75.089590][ T4343] CPU: 1 PID: 4343 Comm: syz.0.17 Not tainted syzkaller #0 [ 75.096770][ T4343] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026 [ 75.107242][ T4343] Call Trace: [ 75.110550][ T4343] [ 75.113482][ T4343] dump_stack_lvl+0x188/0x250 [ 75.118156][ T4343] ? load_image+0x400/0x400 [ 75.122665][ T4343] ? show_regs_print_info+0x20/0x20 [ 75.127951][ T4343] ? print_circular_bug+0x12b/0x1a0 [ 75.133141][ T4343] check_noncircular+0x296/0x330 [ 75.138167][ T4343] ? look_up_lock_class+0x71/0x110 [ 75.143270][ T4343] ? add_chain_block+0x940/0x940 [ 75.148191][ T4343] ? lockdep_lock+0xf1/0x1f0 [ 75.152807][ T4343] ? __lock_acquire+0x12e8/0x7d10 [ 75.157919][ T4343] ? mark_lock+0x94/0x320 [ 75.162525][ T4343] ? _find_first_zero_bit+0xce/0xf0 [ 75.167713][ T4343] __lock_acquire+0x2c42/0x7d10 [ 75.172557][ T4343] ? verify_lock_unused+0x140/0x140 [ 75.177744][ T4343] ? mark_lock+0x94/0x320 [ 75.182057][ T4343] ? verify_lock_unused+0x140/0x140 [ 75.187239][ T4343] ? __lock_acquire+0x12e8/0x7d10 [ 75.192439][ T4343] lock_acquire+0x19e/0x400 [ 75.196926][ T4343] ? __flush_work+0xfa/0x210 [ 75.201767][ T4343] ? __lock_acquire+0x7d10/0x7d10 [ 75.206780][ T4343] ? read_lock_is_recursive+0x10/0x10 [ 75.212173][ T4343] ? start_flush_work+0x776/0x820 [ 75.217195][ T4343] __flush_work+0x116/0x210 [ 75.221699][ T4343] ? __flush_work+0xfa/0x210 [ 75.226282][ T4343] ? flush_work+0x20/0x20 [ 75.230625][ T4343] ? try_to_grab_pending+0xfa/0x7f0 [ 75.235824][ T4343] ? mark_lock+0x94/0x320 [ 75.240148][ T4343] ? lockdep_hardirqs_on_prepare+0x409/0x770 [ 75.246116][ T4343] ? lock_chain_count+0x20/0x20 [ 75.250953][ T4343] ? mark_lock+0x94/0x320 [ 75.255273][ T4343] ? __cancel_work_timer+0x36a/0x560 [ 75.260544][ T4343] __cancel_work_timer+0x3f4/0x560 [ 75.265644][ T4343] ? cancel_work_sync+0x20/0x20 [ 75.270575][ T4343] ? __cancel_work+0x1f9/0x2e0 [ 75.275336][ T4343] ? lockdep_hardirqs_on+0x94/0x140 [ 75.280536][ T4343] ? __cancel_work+0x27b/0x2e0 [ 75.285308][ T4343] ? cancel_work+0x20/0x20 [ 75.289708][ T4343] ? lock_chain_count+0x20/0x20 [ 75.294892][ T4343] hci_request_cancel_all+0xcc/0x300 [ 75.300167][ T4343] hci_dev_do_close+0x4e/0x1030 [ 75.305001][ T4343] ? _raw_spin_unlock_irqrestore+0xc1/0x120 [ 75.310896][ T4343] ? _raw_spin_unlock+0x40/0x40 [ 75.315978][ T4343] hci_rfkill_set_block+0x10a/0x190 [ 75.321298][ T4343] ? rcu_lock_release+0x20/0x20 [ 75.326158][ T4343] rfkill_set_block+0x1c6/0x420 [ 75.331273][ T4343] rfkill_fop_write+0x452/0x560 [ 75.336289][ T4343] ? rfkill_fop_read+0x4d0/0x4d0 [ 75.341215][ T4343] ? common_file_perm+0x110/0x1c0 [ 75.346430][ T4343] ? fsnotify_perm+0x5d/0x560 [ 75.351106][ T4343] ? security_file_permission+0x75/0xa0 [ 75.356652][ T4343] ? rfkill_fop_read+0x4d0/0x4d0 [ 75.361577][ T4343] vfs_write+0x30b/0xd60 [ 75.365809][ T4343] ? file_end_write+0x250/0x250 [ 75.370649][ T4343] ? __context_tracking_exit+0x4c/0x80 [ 75.376104][ T4343] ? __lock_acquire+0x7d10/0x7d10 [ 75.381142][ T4343] ? __fdget_pos+0x1e2/0x370 [ 75.385828][ T4343] ksys_write+0x152/0x260 [ 75.390168][ T4343] ? __ia32_sys_read+0x80/0x80 [ 75.394939][ T4343] ? lockdep_hardirqs_on+0x94/0x140 [ 75.400235][ T4343] do_syscall_64+0x4c/0xa0 [ 75.404649][ T4343] ? clear_bhb_loop+0x30/0x80 [ 75.409444][ T4343] ? clear_bhb_loop+0x30/0x80 [ 75.414118][ T4343] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 75.420226][ T4343] RIP: 0033:0x7f998d199819 [ 75.424806][ T4343] 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 [ 75.444532][ T4343] RSP: 002b:00007fff99ffa9e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 75.453128][ T4343] RAX: ffffffffffffffda RBX: 00007f998d412fa0 RCX: 00007f998d199819 [ 75.461263][ T4343] RDX: 0000000000000008 RSI: 0000200000000000 RDI: 0000000000000003 [ 75.469224][ T4343] RBP: 00007f998d22fc91 R08: 0000000000000000 R09: 0000000000000000 [ 75.477275][ T4343] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 75.485240][ T4343] R13: 00007f998d412fac R14: 00007f998d412fa0 R15: 00007f998d412fa0 [ 75.493475][ T4343]