Warning: Permanently added '10.128.1.111' (ED25519) to the list of known hosts. 2026/07/20 08:15:16 parsed 1 programs 2026/07/20 08:15:16 serving rpc on tcp://42467 [ 67.094877][ T4198] cgroup: Unknown subsys name 'net' [ 67.239093][ T4198] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size = 127995904 bytes [ 68.689740][ T4198] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k FS [ 71.047321][ T144] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 71.066769][ T1422] ieee802154 phy0 wpan0: encryption failed: -22 [ 71.066838][ T144] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 71.073617][ T1422] ieee802154 phy1 wpan1: encryption failed: -22 [ 71.091235][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 71.118241][ T154] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 71.127017][ T154] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 71.136168][ T1236] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 71.575493][ T4240] chnl_net:caif_netlink_parms(): no params data found [ 71.640604][ T4240] bridge0: port 1(bridge_slave_0) entered blocking state [ 71.649504][ T4240] bridge0: port 1(bridge_slave_0) entered disabled state [ 71.658027][ T4240] device bridge_slave_0 entered promiscuous mode [ 71.669073][ T4240] bridge0: port 2(bridge_slave_1) entered blocking state [ 71.676603][ T4240] bridge0: port 2(bridge_slave_1) entered disabled state [ 71.686080][ T4240] device bridge_slave_1 entered promiscuous mode [ 71.723890][ T4240] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 71.736840][ T4240] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 71.766283][ T4240] team0: Port device team_slave_0 added [ 71.774878][ T4240] team0: Port device team_slave_1 added [ 71.798506][ T4240] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 71.806846][ T4240] 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. [ 71.834098][ T4240] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 71.847887][ T4240] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 71.856110][ T4240] 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. [ 71.883263][ T4240] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 71.921200][ T4240] device hsr_slave_0 entered promiscuous mode [ 71.929361][ T4240] device hsr_slave_1 entered promiscuous mode [ 72.069831][ T4240] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 72.081938][ T4240] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 72.093681][ T4240] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 72.105055][ T4240] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 72.175685][ T4240] 8021q: adding VLAN 0 to HW filter on device bond0 [ 72.188375][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 72.196722][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 72.207103][ T4240] 8021q: adding VLAN 0 to HW filter on device team0 [ 72.217556][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 72.226734][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 72.236418][ T144] bridge0: port 1(bridge_slave_0) entered blocking state [ 72.243708][ T144] bridge0: port 1(bridge_slave_0) entered forwarding state [ 72.272246][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 72.281512][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 72.290676][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 72.308251][ T144] bridge0: port 2(bridge_slave_1) entered blocking state [ 72.315463][ T144] bridge0: port 2(bridge_slave_1) entered forwarding state [ 72.327620][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 72.342832][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 72.351915][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 72.372119][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 72.382131][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 72.393656][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 72.404291][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 72.414270][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 72.422969][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 72.431481][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 72.442315][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 72.459348][ T4240] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 72.568407][ T1236] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 72.577383][ T1236] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 72.591917][ T4240] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 72.610113][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 72.618942][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 72.636489][ T1236] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 72.645207][ T1236] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 72.654526][ T1236] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 72.662617][ T1236] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 72.674995][ T4240] device veth0_vlan entered promiscuous mode [ 72.686436][ T4240] device veth1_vlan entered promiscuous mode [ 72.706224][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 72.714392][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 72.722305][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 72.731205][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 72.741904][ T4240] device veth0_macvtap entered promiscuous mode [ 72.752435][ T4240] device veth1_macvtap entered promiscuous mode [ 72.781610][ T4240] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 72.789812][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 72.798104][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 72.807545][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 72.816383][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 72.828146][ T4240] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 72.836081][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 72.845108][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 72.857719][ T4240] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 72.867431][ T4240] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 72.876671][ T4240] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 72.885945][ T4240] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 72.997320][ T4240] syz-executor (4240) used greatest stack depth: 20848 bytes left 2026/07/20 08:15:26 executed programs: 0 [ 75.006910][ T4302] chnl_net:caif_netlink_parms(): no params data found [ 75.055976][ T4302] bridge0: port 1(bridge_slave_0) entered blocking state [ 75.063605][ T4302] bridge0: port 1(bridge_slave_0) entered disabled state [ 75.071376][ T4302] device bridge_slave_0 entered promiscuous mode [ 75.079590][ T4302] bridge0: port 2(bridge_slave_1) entered blocking state [ 75.087678][ T4302] bridge0: port 2(bridge_slave_1) entered disabled state [ 75.096113][ T4302] device bridge_slave_1 entered promiscuous mode [ 75.121590][ T4302] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 75.138695][ T9] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 75.155595][ T4302] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 75.182604][ T4302] team0: Port device team_slave_0 added [ 75.189984][ T4302] team0: Port device team_slave_1 added [ 75.205855][ T4302] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 75.213379][ T4302] 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. [ 75.239480][ T4302] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 75.251453][ T4302] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 75.258478][ T4302] 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. [ 75.284477][ T4302] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 75.312712][ T4302] device hsr_slave_0 entered promiscuous mode [ 75.319324][ T4302] device hsr_slave_1 entered promiscuous mode [ 75.326034][ T4302] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 75.333921][ T4302] Cannot create hsr debugfs directory [ 76.903554][ T4200] Bluetooth: hci0: command 0x0409 tx timeout [ 78.449576][ T9] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 78.498417][ T9] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 78.541383][ T9] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 78.992661][ T21] Bluetooth: hci0: command 0x041b tx timeout [ 79.471877][ T4302] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 79.496533][ T4302] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 79.506168][ T4302] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 79.515896][ T4302] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 79.586846][ T4302] 8021q: adding VLAN 0 to HW filter on device bond0 [ 79.618912][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 79.626896][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 79.638697][ T4302] 8021q: adding VLAN 0 to HW filter on device team0 [ 79.648238][ T1236] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 79.657069][ T1236] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 79.665596][ T1236] bridge0: port 1(bridge_slave_0) entered blocking state [ 79.672727][ T1236] bridge0: port 1(bridge_slave_0) entered forwarding state [ 79.680555][ T1236] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 79.692905][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 79.701512][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 79.710531][ T144] bridge0: port 2(bridge_slave_1) entered blocking state [ 79.717845][ T144] bridge0: port 2(bridge_slave_1) entered forwarding state [ 79.727902][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 79.753860][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 79.765586][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 79.775646][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 79.784948][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 79.809631][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 79.818528][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 79.829478][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 79.838410][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 79.850805][ T1236] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 79.860037][ T1236] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 79.875341][ T9] device hsr_slave_0 left promiscuous mode [ 79.881627][ T9] device hsr_slave_1 left promiscuous mode [ 79.888365][ T9] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 79.895971][ T9] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 79.905539][ T9] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 79.913079][ T9] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 79.920733][ T9] device bridge_slave_1 left promiscuous mode [ 79.927601][ T9] bridge0: port 2(bridge_slave_1) entered disabled state [ 79.940332][ T9] device bridge_slave_0 left promiscuous mode [ 79.950934][ T9] bridge0: port 1(bridge_slave_0) entered disabled state [ 79.968385][ T9] device veth1_macvtap left promiscuous mode [ 79.974905][ T9] device veth0_macvtap left promiscuous mode [ 79.980943][ T9] device veth1_vlan left promiscuous mode [ 79.987009][ T9] device veth0_vlan left promiscuous mode [ 80.152278][ T9] team0 (unregistering): Port device team_slave_1 removed [ 80.169256][ T9] team0 (unregistering): Port device team_slave_0 removed [ 80.183027][ T9] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 80.197375][ T9] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 80.251884][ T9] bond0 (unregistering): Released all slaves [ 80.308907][ T4302] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 80.409487][ T1236] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 80.418009][ T1236] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 80.437906][ T4302] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 80.458029][ T1236] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 80.467081][ T1236] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 80.496181][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 80.505744][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 80.515391][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 80.523290][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 80.531797][ T4302] device veth0_vlan entered promiscuous mode [ 80.542452][ T4302] device veth1_vlan entered promiscuous mode [ 80.563462][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 80.571695][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 80.580042][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 80.588896][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 80.602101][ T4302] device veth0_macvtap entered promiscuous mode [ 80.611796][ T4302] device veth1_macvtap entered promiscuous mode [ 80.629863][ T4302] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 80.638590][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 80.647722][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 80.656280][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 80.665687][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 80.678966][ T4302] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 80.687441][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 80.696693][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 80.708636][ T4302] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 80.717680][ T4302] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 80.726805][ T4302] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 80.736885][ T4302] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 80.805658][ T144] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 80.823912][ T144] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 80.845943][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 80.859068][ T1236] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 80.868180][ T1236] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 80.876172][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 80.996773][ T4348] [ 80.999259][ T4348] ====================================================== [ 81.006298][ T4348] WARNING: possible circular locking dependency detected [ 81.013340][ T4348] syzkaller #0 Not tainted [ 81.017765][ T4348] ------------------------------------------------------ [ 81.024789][ T4348] syz.0.17/4348 is trying to acquire lock: [ 81.030598][ T4348] ffff88807d79d028 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}, at: __flush_work+0xfa/0x210 [ 81.041685][ T4348] [ 81.041685][ T4348] but task is already holding lock: [ 81.049054][ T4348] ffffffff8d6d3c28 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x1ae/0x560 [ 81.058736][ T4348] [ 81.058736][ T4348] which lock already depends on the new lock. [ 81.058736][ T4348] [ 81.069171][ T4348] [ 81.069171][ T4348] the existing dependency chain (in reverse order) is: [ 81.078205][ T4348] [ 81.078205][ T4348] -> #4 (rfkill_global_mutex){+.+.}-{3:3}: [ 81.086220][ T4348] __mutex_lock_common+0x1e5/0x2400 [ 81.091964][ T4348] mutex_lock_nested+0x17/0x20 [ 81.097259][ T4348] rfkill_register+0x2f/0x970 [ 81.102473][ T4348] hci_register_dev+0x459/0x980 [ 81.102878][ T4262] Bluetooth: hci0: command 0x040f tx timeout [ 81.107853][ T4348] vhci_create_device+0x32e/0x5c0 [ 81.119385][ T4348] vhci_write+0x389/0x440 [ 81.124260][ T4348] vfs_write+0x748/0xd70 [ 81.129050][ T4348] ksys_write+0x153/0x260 [ 81.133912][ T4348] do_syscall_64+0x4c/0xa0 [ 81.138873][ T4348] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 81.145301][ T4348] [ 81.145301][ T4348] -> #3 (&data->open_mutex){+.+.}-{3:3}: [ 81.153129][ T4348] __mutex_lock_common+0x1e5/0x2400 [ 81.158865][ T4348] mutex_lock_nested+0x17/0x20 [ 81.164176][ T4348] vhci_send_frame+0x88/0x100 [ 81.169411][ T4348] hci_send_frame+0x1a9/0x2e0 [ 81.174638][ T4348] hci_tx_work+0x9b5/0x16d0 [ 81.179673][ T4348] process_one_work+0x867/0xff0 [ 81.185071][ T4348] worker_thread+0xad7/0x12a0 [ 81.190293][ T4348] kthread+0x42e/0x520 [ 81.194909][ T4348] ret_from_fork+0x1f/0x30 [ 81.199874][ T4348] [ 81.199874][ T4348] -> #2 ((work_completion)(&hdev->tx_work)){+.+.}-{0:0}: [ 81.209107][ T4348] __flush_work+0x116/0x210 [ 81.214162][ T4348] hci_dev_do_close+0x201/0x1020 [ 81.219649][ T4348] hci_unregister_dev+0x2eb/0x590 [ 81.225211][ T4348] vhci_release+0x73/0xc0 [ 81.230085][ T4348] __fput+0x212/0x8c0 [ 81.234606][ T4348] task_work_run+0x125/0x1a0 [ 81.239740][ T4348] do_exit+0x635/0x2110 [ 81.244429][ T4348] do_group_exit+0x12c/0x2f0 [ 81.249594][ T4348] get_signal+0x7eb/0x12e0 [ 81.254556][ T4348] arch_do_signal_or_restart+0xe6/0x12a0 [ 81.260737][ T4348] exit_to_user_mode_loop+0x9e/0x130 [ 81.266570][ T4348] exit_to_user_mode_prepare+0xee/0x180 [ 81.272652][ T4348] syscall_exit_to_user_mode+0x16/0x40 [ 81.278674][ T4348] do_syscall_64+0x58/0xa0 [ 81.283738][ T4348] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 81.290181][ T4348] [ 81.290181][ T4348] -> #1 (&hdev->req_lock){+.+.}-{3:3}: [ 81.297848][ T4348] __mutex_lock_common+0x1e5/0x2400 [ 81.303635][ T4348] mutex_lock_nested+0x17/0x20 [ 81.308952][ T4348] bg_scan_update+0x44/0x3b0 [ 81.314090][ T4348] process_one_work+0x867/0xff0 [ 81.319489][ T4348] worker_thread+0xad7/0x12a0 [ 81.324718][ T4348] kthread+0x42e/0x520 [ 81.329336][ T4348] ret_from_fork+0x1f/0x30 [ 81.334299][ T4348] [ 81.334299][ T4348] -> #0 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}: [ 81.344150][ T4348] __lock_acquire+0x2c66/0x7b50 [ 81.349545][ T4348] lock_acquire+0x19e/0x400 [ 81.354602][ T4348] __flush_work+0x116/0x210 [ 81.359649][ T4348] __cancel_work_timer+0x3f4/0x560 [ 81.365299][ T4348] hci_request_cancel_all+0xcc/0x300 [ 81.371130][ T4348] hci_dev_do_close+0x4e/0x1020 [ 81.376528][ T4348] hci_rfkill_set_block+0x101/0x180 [ 81.382265][ T4348] rfkill_set_block+0x1c1/0x3c0 [ 81.387653][ T4348] rfkill_fop_write+0x453/0x560 [ 81.393047][ T4348] vfs_write+0x304/0xd70 [ 81.397827][ T4348] ksys_write+0x153/0x260 [ 81.402697][ T4348] do_syscall_64+0x4c/0xa0 [ 81.407655][ T4348] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 81.414095][ T4348] [ 81.414095][ T4348] other info that might help us debug this: [ 81.414095][ T4348] [ 81.424336][ T4348] Chain exists of: [ 81.424336][ T4348] (work_completion)(&hdev->bg_scan_update) --> &data->open_mutex --> rfkill_global_mutex [ 81.424336][ T4348] [ 81.440099][ T4348] Possible unsafe locking scenario: [ 81.440099][ T4348] [ 81.447568][ T4348] CPU0 CPU1 [ 81.452949][ T4348] ---- ---- [ 81.458328][ T4348] lock(rfkill_global_mutex); [ 81.463121][ T4348] lock(&data->open_mutex); [ 81.470270][ T4348] lock(rfkill_global_mutex); [ 81.477666][ T4348] lock((work_completion)(&hdev->bg_scan_update)); [ 81.484281][ T4348] [ 81.484281][ T4348] *** DEADLOCK *** [ 81.484281][ T4348] [ 81.492456][ T4348] 1 lock held by syz.0.17/4348: [ 81.497336][ T4348] #0: ffffffff8d6d3c28 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x1ae/0x560 [ 81.507472][ T4348] [ 81.507472][ T4348] stack backtrace: [ 81.513390][ T4348] CPU: 0 PID: 4348 Comm: syz.0.17 Not tainted syzkaller #0 [ 81.520613][ T4348] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 [ 81.530696][ T4348] Call Trace: [ 81.534000][ T4348] [ 81.536946][ T4348] dump_stack_lvl+0x188/0x250 [ 81.541649][ T4348] ? load_image+0x410/0x410 [ 81.546175][ T4348] ? show_regs_print_info+0x20/0x20 [ 81.551421][ T4348] ? print_circular_bug+0x12b/0x1a0 [ 81.556650][ T4348] check_noncircular+0x296/0x330 [ 81.561618][ T4348] ? look_up_lock_class+0x71/0x110 [ 81.566760][ T4348] ? add_chain_block+0x9b0/0x9b0 [ 81.571723][ T4348] ? lockdep_lock+0xf1/0x1f0 [ 81.576340][ T4348] ? __lock_acquire+0x1305/0x7b50 [ 81.581388][ T4348] ? mark_lock+0x94/0x320 [ 81.585748][ T4348] ? _find_first_zero_bit+0xd1/0xf0 [ 81.591232][ T4348] __lock_acquire+0x2c66/0x7b50 [ 81.596127][ T4348] ? verify_lock_unused+0x140/0x140 [ 81.601361][ T4348] ? verify_lock_unused+0x140/0x140 [ 81.606602][ T4348] lock_acquire+0x19e/0x400 [ 81.611144][ T4348] ? __flush_work+0xfa/0x210 [ 81.615764][ T4348] ? __lock_acquire+0x7b50/0x7b50 [ 81.620817][ T4348] ? read_lock_is_recursive+0x10/0x10 [ 81.626225][ T4348] ? start_flush_work+0x784/0x830 [ 81.631313][ T4348] __flush_work+0x116/0x210 [ 81.635844][ T4348] ? __flush_work+0xfa/0x210 [ 81.640457][ T4348] ? flush_work+0x20/0x20 [ 81.644808][ T4348] ? try_to_grab_pending+0xfb/0x820 [ 81.650032][ T4348] ? mark_lock+0x94/0x320 [ 81.654388][ T4348] ? lockdep_hardirqs_on_prepare+0x448/0x7c0 [ 81.660400][ T4348] ? lock_chain_count+0x20/0x20 [ 81.665281][ T4348] ? mark_lock+0x94/0x320 [ 81.669655][ T4348] ? __cancel_work_timer+0x36a/0x560 [ 81.674968][ T4348] __cancel_work_timer+0x3f4/0x560 [ 81.680122][ T4348] ? cancel_work_sync+0x20/0x20 [ 81.684992][ T4348] ? __cancel_work+0x1f9/0x2e0 [ 81.689787][ T4348] ? lockdep_hardirqs_on+0x94/0x140 [ 81.695015][ T4348] ? __cancel_work+0x27b/0x2e0 [ 81.699801][ T4348] ? cancel_work+0x20/0x20 [ 81.704246][ T4348] hci_request_cancel_all+0xcc/0x300 [ 81.709563][ T4348] hci_dev_do_close+0x4e/0x1020 [ 81.714464][ T4348] ? _raw_spin_unlock_irqrestore+0xc1/0x120 [ 81.720396][ T4348] ? _raw_spin_unlock+0x40/0x40 [ 81.725275][ T4348] hci_rfkill_set_block+0x101/0x180 [ 81.730495][ T4348] ? rcu_lock_release+0x20/0x20 [ 81.735378][ T4348] rfkill_set_block+0x1c1/0x3c0 [ 81.740257][ T4348] rfkill_fop_write+0x453/0x560 [ 81.745133][ T4348] ? rfkill_fop_read+0x560/0x560 [ 81.750102][ T4348] ? common_file_perm+0xf0/0x1c0 [ 81.755067][ T4348] ? fsnotify_perm+0x5d/0x560 [ 81.759773][ T4348] ? security_file_permission+0x75/0xa0 [ 81.765352][ T4348] ? rfkill_fop_read+0x560/0x560 [ 81.770329][ T4348] vfs_write+0x304/0xd70 [ 81.774603][ T4348] ? file_end_write+0x250/0x250 [ 81.779483][ T4348] ? __context_tracking_exit+0x4c/0x80 [ 81.784969][ T4348] ? __fdget_pos+0x1e2/0x370 [ 81.789593][ T4348] ksys_write+0x153/0x260 [ 81.793953][ T4348] ? __ia32_sys_read+0x80/0x80 [ 81.798744][ T4348] ? lockdep_hardirqs_on+0x94/0x140 [ 81.803965][ T4348] do_syscall_64+0x4c/0xa0 [ 81.808432][ T4348] ? clear_bhb_loop+0x30/0x80 [ 81.813128][ T4348] ? clear_bhb_loop+0x30/0x80 [ 81.817827][ T4348] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 81.823761][ T4348] RIP: 0033:0x7f0e9bb35e99 [ 81.828214][ T4348] 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 [ 81.847849][ T4348] RSP: 002b:00007ffebf6c7618 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 81.856301][ T4348] RAX: ffffffffffffffda RBX: 00007f0e9bdbdfa0 RCX: 00007f0e9bb35e99 [ 81.864303][ T4348] RDX: 0000000000000008 RSI: 0000200000000180 RDI: 0000000000000003 [ 81.872302][ T4348] RBP: 00007f0e9bbcbeaf R08: 0000000000000000 R09: 0000000000000000 [ 81.880293][ T4348] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 81.888286][ T4348] R13: 00007f0e9bdbdfac R14: 00007f0e9bdbdfa0 R15: 00007f0e9bdbdfa0 [ 81.896283][ T4348]