Warning: Permanently added '10.128.0.32' (ED25519) to the list of known hosts. 2026/04/26 16:28:28 parsed 1 programs [ 67.634441][ T4187] cgroup: Unknown subsys name 'net' [ 67.749285][ T4187] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size = 127995904 bytes [ 69.271115][ T4187] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k FS [ 71.477045][ T1432] ieee802154 phy0 wpan0: encryption failed: -22 [ 71.484285][ T1432] ieee802154 phy1 wpan1: encryption failed: -22 [ 73.054057][ T1390] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 73.062578][ T1390] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 73.099249][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 73.142686][ T9] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 73.152049][ T9] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 73.160746][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 73.380553][ T4274] chnl_net:caif_netlink_parms(): no params data found [ 73.421826][ T4274] bridge0: port 1(bridge_slave_0) entered blocking state [ 73.429922][ T4274] bridge0: port 1(bridge_slave_0) entered disabled state [ 73.438279][ T4274] device bridge_slave_0 entered promiscuous mode [ 73.447212][ T4274] bridge0: port 2(bridge_slave_1) entered blocking state [ 73.454636][ T4274] bridge0: port 2(bridge_slave_1) entered disabled state [ 73.462529][ T4274] device bridge_slave_1 entered promiscuous mode [ 73.482469][ T4274] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 73.494739][ T4274] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 73.515339][ T4274] team0: Port device team_slave_0 added [ 73.522939][ T4274] team0: Port device team_slave_1 added [ 73.540017][ T4274] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 73.547350][ T4274] 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. [ 73.574199][ T4274] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 73.587191][ T4274] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 73.594344][ T4274] 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. [ 73.621982][ T4274] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 73.680765][ T4274] device hsr_slave_0 entered promiscuous mode [ 73.688313][ T4274] device hsr_slave_1 entered promiscuous mode [ 73.838225][ T4274] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 73.849616][ T4274] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 73.860906][ T4274] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 73.870640][ T4274] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 73.907950][ T4274] bridge0: port 2(bridge_slave_1) entered blocking state [ 73.915473][ T4274] bridge0: port 2(bridge_slave_1) entered forwarding state [ 73.923919][ T4274] bridge0: port 1(bridge_slave_0) entered blocking state [ 73.931745][ T4274] bridge0: port 1(bridge_slave_0) entered forwarding state [ 73.985921][ T1390] bridge0: port 1(bridge_slave_0) entered disabled state [ 73.995036][ T1390] bridge0: port 2(bridge_slave_1) entered disabled state [ 74.039248][ T4274] 8021q: adding VLAN 0 to HW filter on device bond0 [ 74.052818][ T1390] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 74.061649][ T1390] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 74.087047][ T4274] 8021q: adding VLAN 0 to HW filter on device team0 [ 74.096662][ T1390] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 74.106291][ T1390] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 74.115330][ T1390] bridge0: port 1(bridge_slave_0) entered blocking state [ 74.122965][ T1390] bridge0: port 1(bridge_slave_0) entered forwarding state [ 74.136841][ T1390] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 74.147284][ T1390] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 74.156127][ T1390] bridge0: port 2(bridge_slave_1) entered blocking state [ 74.163428][ T1390] bridge0: port 2(bridge_slave_1) entered forwarding state [ 74.189952][ T1390] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 74.200964][ T1390] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 74.222445][ T4274] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 74.234160][ T4274] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 74.248054][ T1390] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 74.259216][ T1390] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 74.269144][ T1390] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 74.278450][ T1390] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 74.287738][ T1390] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 74.296919][ T1390] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 74.308044][ T1390] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 74.317141][ T1390] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 74.326110][ T1390] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 74.334361][ T1390] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 74.460610][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 74.473788][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 74.488420][ T4274] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 74.511067][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 74.522249][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 74.544981][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 74.554312][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 74.566295][ T4274] device veth0_vlan entered promiscuous mode [ 74.573544][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 74.595215][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 74.620342][ T4274] device veth1_vlan entered promiscuous mode [ 74.646265][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 74.656465][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 74.665825][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 74.676355][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 74.687877][ T4274] device veth0_macvtap entered promiscuous mode [ 74.702224][ T4274] device veth1_macvtap entered promiscuous mode [ 74.721118][ T4274] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 74.731161][ T1182] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 74.740123][ T1182] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 74.749063][ T1182] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 74.759219][ T1182] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 74.772262][ T4274] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 74.781601][ T1182] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 74.791161][ T1182] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 74.803993][ T4274] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 74.815227][ T4274] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 74.824796][ T4274] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 74.835402][ T4274] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 2026/04/26 16:28:38 executed programs: 0 [ 75.677508][ T4291] chnl_net:caif_netlink_parms(): no params data found [ 75.750019][ T4291] bridge0: port 1(bridge_slave_0) entered blocking state [ 75.759720][ T4291] bridge0: port 1(bridge_slave_0) entered disabled state [ 75.768588][ T4291] device bridge_slave_0 entered promiscuous mode [ 75.779910][ T4291] bridge0: port 2(bridge_slave_1) entered blocking state [ 75.787965][ T4291] bridge0: port 2(bridge_slave_1) entered disabled state [ 75.797890][ T4291] device bridge_slave_1 entered promiscuous mode [ 75.819791][ T4291] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 75.832336][ T4291] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 75.854960][ T4291] team0: Port device team_slave_0 added [ 75.863699][ T4291] team0: Port device team_slave_1 added [ 75.885463][ T4291] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 75.892602][ T4291] 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. [ 75.919792][ T4291] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 75.947195][ T4291] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 75.955104][ T4291] 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. [ 75.983796][ T4291] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 76.029341][ T4291] device hsr_slave_0 entered promiscuous mode [ 76.036893][ T4291] device hsr_slave_1 entered promiscuous mode [ 76.045035][ T4291] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 76.053637][ T4291] Cannot create hsr debugfs directory [ 76.133160][ T4291] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 77.554831][ T21] Bluetooth: hci0: command 0x0409 tx timeout [ 79.633891][ T4262] Bluetooth: hci0: command 0x041b tx timeout [ 79.648027][ T4291] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 80.478366][ T4291] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 80.558731][ T4291] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 80.754546][ T4291] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 80.765094][ T4291] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 80.774929][ T4291] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 80.791740][ T4291] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 80.857890][ T4291] 8021q: adding VLAN 0 to HW filter on device bond0 [ 80.869875][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 80.878041][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 80.889387][ T4291] 8021q: adding VLAN 0 to HW filter on device team0 [ 80.910928][ T1182] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 80.920942][ T1182] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 80.931733][ T1182] bridge0: port 1(bridge_slave_0) entered blocking state [ 80.939282][ T1182] bridge0: port 1(bridge_slave_0) entered forwarding state [ 80.948896][ T1182] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 80.958037][ T1182] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 80.966542][ T1182] bridge0: port 2(bridge_slave_1) entered blocking state [ 80.973733][ T1182] bridge0: port 2(bridge_slave_1) entered forwarding state [ 80.981578][ T1182] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 81.000744][ T1182] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 81.012422][ T1182] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 81.027137][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 81.036363][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 81.046200][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 81.071087][ T154] device hsr_slave_0 left promiscuous mode [ 81.078534][ T154] device hsr_slave_1 left promiscuous mode [ 81.085339][ T154] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 81.092876][ T154] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 81.102891][ T154] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 81.110417][ T154] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 81.118676][ T154] device bridge_slave_1 left promiscuous mode [ 81.125983][ T154] bridge0: port 2(bridge_slave_1) entered disabled state [ 81.138863][ T154] device bridge_slave_0 left promiscuous mode [ 81.146727][ T154] bridge0: port 1(bridge_slave_0) entered disabled state [ 81.165090][ T154] device veth1_macvtap left promiscuous mode [ 81.171419][ T154] device veth0_macvtap left promiscuous mode [ 81.177748][ T154] device veth1_vlan left promiscuous mode [ 81.184538][ T154] device veth0_vlan left promiscuous mode [ 81.326321][ T154] team0 (unregistering): Port device team_slave_1 removed [ 81.340733][ T154] team0 (unregistering): Port device team_slave_0 removed [ 81.356349][ T154] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 81.370829][ T154] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 81.427792][ T154] bond0 (unregistering): Released all slaves [ 81.473366][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 81.482645][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 81.498714][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 81.507662][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 81.521921][ T4291] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 81.535285][ T4291] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 81.544400][ T1182] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 81.553614][ T1182] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 81.657731][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 81.666094][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 81.681993][ T4291] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 81.705643][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 81.716247][ T1107] cfg80211: failed to load regulatory.db [ 81.724213][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 81.744101][ T21] Bluetooth: hci0: command 0x040f tx timeout [ 81.764437][ T1182] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 81.772886][ T1182] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 81.784535][ T1182] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 81.792487][ T1182] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 81.805800][ T4291] device veth0_vlan entered promiscuous mode [ 81.827088][ T4291] device veth1_vlan entered promiscuous mode [ 81.894846][ T1182] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 81.904260][ T1182] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 81.929705][ T4291] device veth0_macvtap entered promiscuous mode [ 81.955034][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 81.965198][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 81.987952][ T4291] device veth1_macvtap entered promiscuous mode [ 81.996210][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 82.005138][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 82.054803][ T4291] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 82.062367][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 82.094129][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 82.117819][ T4291] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 82.133344][ T1182] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 82.153843][ T1182] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 82.176098][ T4291] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 82.193238][ T4291] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 82.202093][ T4291] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 82.237203][ T4291] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 82.374918][ T1182] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 82.382958][ T1182] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 82.415173][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 82.455346][ T144] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 82.465307][ T144] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 82.475489][ T1390] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 82.607542][ T4303] [ 82.610055][ T4303] ====================================================== [ 82.617087][ T4303] WARNING: possible circular locking dependency detected [ 82.624205][ T4303] syzkaller #0 Not tainted [ 82.628634][ T4303] ------------------------------------------------------ [ 82.635691][ T4303] syz.0.17/4303 is trying to acquire lock: [ 82.641634][ T4303] ffff8880249d4c28 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}, at: __flush_work+0xfa/0x210 [ 82.653164][ T4303] [ 82.653164][ T4303] but task is already holding lock: [ 82.660626][ T4303] ffffffff8d6c5de8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x18b/0x560 [ 82.670315][ T4303] [ 82.670315][ T4303] which lock already depends on the new lock. [ 82.670315][ T4303] [ 82.681250][ T4303] [ 82.681250][ T4303] the existing dependency chain (in reverse order) is: [ 82.690282][ T4303] [ 82.690282][ T4303] -> #4 (rfkill_global_mutex){+.+.}-{3:3}: [ 82.698399][ T4303] __mutex_lock_common+0x1e3/0x2400 [ 82.704334][ T4303] mutex_lock_nested+0x17/0x20 [ 82.709730][ T4303] rfkill_register+0x33/0x980 [ 82.714952][ T4303] hci_register_dev+0x452/0x970 [ 82.720362][ T4303] vhci_create_device+0x32c/0x5c0 [ 82.725938][ T4303] vhci_write+0x391/0x450 [ 82.730856][ T4303] vfs_write+0x745/0xd60 [ 82.735645][ T4303] ksys_write+0x152/0x260 [ 82.740645][ T4303] do_syscall_64+0x4c/0xa0 [ 82.745614][ T4303] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 82.752226][ T4303] [ 82.752226][ T4303] -> #3 (&data->open_mutex){+.+.}-{3:3}: [ 82.760073][ T4303] __mutex_lock_common+0x1e3/0x2400 [ 82.766439][ T4303] mutex_lock_nested+0x17/0x20 [ 82.771935][ T4303] vhci_send_frame+0x88/0x100 [ 82.777691][ T4303] hci_send_frame+0x1a9/0x2e0 [ 82.783087][ T4303] hci_tx_work+0x9f9/0x1710 [ 82.788146][ T4303] process_one_work+0x85f/0x1010 [ 82.793908][ T4303] worker_thread+0xaa6/0x1290 [ 82.799418][ T4303] kthread+0x436/0x520 [ 82.804184][ T4303] ret_from_fork+0x1f/0x30 [ 82.809141][ T4303] [ 82.809141][ T4303] -> #2 ((work_completion)(&hdev->tx_work)){+.+.}-{0:0}: [ 82.818889][ T4303] __flush_work+0x116/0x210 [ 82.824180][ T4303] hci_dev_do_close+0x1e7/0x1030 [ 82.829953][ T4303] hci_unregister_dev+0x2d7/0x580 [ 82.835619][ T4303] vhci_release+0x73/0xc0 [ 82.840665][ T4303] __fput+0x234/0x930 [ 82.845172][ T4303] task_work_run+0x125/0x1a0 [ 82.850289][ T4303] do_exit+0x626/0x20c0 [ 82.855142][ T4303] do_group_exit+0x12e/0x300 [ 82.860250][ T4303] get_signal+0x6ca/0x12c0 [ 82.865191][ T4303] arch_do_signal_or_restart+0xe7/0x12c0 [ 82.871433][ T4303] exit_to_user_mode_loop+0x9e/0x130 [ 82.877342][ T4303] exit_to_user_mode_prepare+0xee/0x180 [ 82.883498][ T4303] syscall_exit_to_user_mode+0x16/0x40 [ 82.889896][ T4303] do_syscall_64+0x58/0xa0 [ 82.894914][ T4303] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 82.901427][ T4303] [ 82.901427][ T4303] -> #1 (&hdev->req_lock){+.+.}-{3:3}: [ 82.909931][ T4303] __mutex_lock_common+0x1e3/0x2400 [ 82.916208][ T4303] mutex_lock_nested+0x17/0x20 [ 82.921507][ T4303] bg_scan_update+0x44/0x3b0 [ 82.927121][ T4303] process_one_work+0x85f/0x1010 [ 82.932865][ T4303] worker_thread+0xaa6/0x1290 [ 82.938677][ T4303] kthread+0x436/0x520 [ 82.943378][ T4303] ret_from_fork+0x1f/0x30 [ 82.948318][ T4303] [ 82.948318][ T4303] -> #0 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}: [ 82.958246][ T4303] __lock_acquire+0x2c42/0x7d10 [ 82.963638][ T4303] lock_acquire+0x19e/0x400 [ 82.968675][ T4303] __flush_work+0x116/0x210 [ 82.973879][ T4303] __cancel_work_timer+0x3f4/0x560 [ 82.980102][ T4303] hci_request_cancel_all+0xcc/0x300 [ 82.986176][ T4303] hci_dev_do_close+0x4e/0x1030 [ 82.991646][ T4303] hci_rfkill_set_block+0x10a/0x190 [ 82.997455][ T4303] rfkill_set_block+0x1c9/0x3d0 [ 83.003262][ T4303] rfkill_fop_write+0x452/0x560 [ 83.008634][ T4303] vfs_write+0x30b/0xd60 [ 83.013494][ T4303] ksys_write+0x152/0x260 [ 83.018856][ T4303] do_syscall_64+0x4c/0xa0 [ 83.023810][ T4303] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 83.030226][ T4303] [ 83.030226][ T4303] other info that might help us debug this: [ 83.030226][ T4303] [ 83.040776][ T4303] Chain exists of: [ 83.040776][ T4303] (work_completion)(&hdev->bg_scan_update) --> &data->open_mutex --> rfkill_global_mutex [ 83.040776][ T4303] [ 83.057847][ T4303] Possible unsafe locking scenario: [ 83.057847][ T4303] [ 83.065295][ T4303] CPU0 CPU1 [ 83.070748][ T4303] ---- ---- [ 83.076104][ T4303] lock(rfkill_global_mutex); [ 83.081055][ T4303] lock(&data->open_mutex); [ 83.088161][ T4303] lock(rfkill_global_mutex); [ 83.095440][ T4303] lock((work_completion)(&hdev->bg_scan_update)); [ 83.102028][ T4303] [ 83.102028][ T4303] *** DEADLOCK *** [ 83.102028][ T4303] [ 83.110168][ T4303] 1 lock held by syz.0.17/4303: [ 83.115101][ T4303] #0: ffffffff8d6c5de8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x18b/0x560 [ 83.125714][ T4303] [ 83.125714][ T4303] stack backtrace: [ 83.131599][ T4303] CPU: 0 PID: 4303 Comm: syz.0.17 Not tainted syzkaller #0 [ 83.138980][ T4303] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 83.149130][ T4303] Call Trace: [ 83.152500][ T4303] [ 83.155438][ T4303] dump_stack_lvl+0x188/0x250 [ 83.160207][ T4303] ? load_image+0x400/0x400 [ 83.164990][ T4303] ? show_regs_print_info+0x20/0x20 [ 83.170205][ T4303] ? print_circular_bug+0x12b/0x1a0 [ 83.175758][ T4303] check_noncircular+0x296/0x330 [ 83.180808][ T4303] ? look_up_lock_class+0x71/0x110 [ 83.186203][ T4303] ? add_chain_block+0x940/0x940 [ 83.191317][ T4303] ? lockdep_lock+0xf1/0x1f0 [ 83.196098][ T4303] ? __lock_acquire+0x12e8/0x7d10 [ 83.201705][ T4303] ? mark_lock+0x94/0x320 [ 83.206157][ T4303] __lock_acquire+0x2c42/0x7d10 [ 83.211690][ T4303] ? verify_lock_unused+0x140/0x140 [ 83.217000][ T4303] ? verify_lock_unused+0x140/0x140 [ 83.222224][ T4303] ? mark_lock+0x94/0x320 [ 83.226747][ T4303] lock_acquire+0x19e/0x400 [ 83.231262][ T4303] ? __flush_work+0xfa/0x210 [ 83.236030][ T4303] ? __lock_acquire+0x7d10/0x7d10 [ 83.241254][ T4303] ? read_lock_is_recursive+0x10/0x10 [ 83.246780][ T4303] ? start_flush_work+0x776/0x820 [ 83.251995][ T4303] __flush_work+0x116/0x210 [ 83.256733][ T4303] ? __flush_work+0xfa/0x210 [ 83.261590][ T4303] ? flush_work+0x20/0x20 [ 83.266267][ T4303] ? try_to_grab_pending+0xfa/0x7f0 [ 83.271740][ T4303] ? mark_lock+0x94/0x320 [ 83.276159][ T4303] ? lockdep_hardirqs_on_prepare+0x409/0x770 [ 83.282508][ T4303] ? lock_chain_count+0x20/0x20 [ 83.287556][ T4303] ? mark_lock+0x94/0x320 [ 83.291888][ T4303] ? __cancel_work_timer+0x36a/0x560 [ 83.297205][ T4303] __cancel_work_timer+0x3f4/0x560 [ 83.302531][ T4303] ? cancel_work_sync+0x20/0x20 [ 83.307756][ T4303] ? __cancel_work+0x1f9/0x2e0 [ 83.313064][ T4303] ? lockdep_hardirqs_on+0x94/0x140 [ 83.318964][ T4303] ? __cancel_work+0x27b/0x2e0 [ 83.324261][ T4303] ? cancel_work+0x20/0x20 [ 83.329268][ T4303] ? lock_chain_count+0x20/0x20 [ 83.334481][ T4303] hci_request_cancel_all+0xcc/0x300 [ 83.340144][ T4303] hci_dev_do_close+0x4e/0x1030 [ 83.345372][ T4303] ? _raw_spin_unlock_irqrestore+0xc1/0x120 [ 83.351452][ T4303] ? _raw_spin_unlock+0x40/0x40 [ 83.356349][ T4303] hci_rfkill_set_block+0x10a/0x190 [ 83.361820][ T4303] ? rcu_lock_release+0x20/0x20 [ 83.367238][ T4303] rfkill_set_block+0x1c9/0x3d0 [ 83.372304][ T4303] rfkill_fop_write+0x452/0x560 [ 83.377795][ T4303] ? rfkill_fop_read+0x520/0x520 [ 83.382765][ T4303] ? common_file_perm+0x140/0x1c0 [ 83.387980][ T4303] ? fsnotify_perm+0x5d/0x560 [ 83.392933][ T4303] ? security_file_permission+0x75/0xa0 [ 83.398573][ T4303] ? rfkill_fop_read+0x520/0x520 [ 83.403713][ T4303] vfs_write+0x30b/0xd60 [ 83.408049][ T4303] ? file_end_write+0x250/0x250 [ 83.412900][ T4303] ? __context_tracking_exit+0x4c/0x80 [ 83.418368][ T4303] ? __lock_acquire+0x7d10/0x7d10 [ 83.423629][ T4303] ? __fdget_pos+0x1e2/0x370 [ 83.428228][ T4303] ksys_write+0x152/0x260 [ 83.432581][ T4303] ? __ia32_sys_read+0x80/0x80 [ 83.437380][ T4303] ? lockdep_hardirqs_on+0x94/0x140 [ 83.442936][ T4303] do_syscall_64+0x4c/0xa0 [ 83.447384][ T4303] ? clear_bhb_loop+0x30/0x80 [ 83.452163][ T4303] ? clear_bhb_loop+0x30/0x80 [ 83.456954][ T4303] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 83.463027][ T4303] RIP: 0033:0x7f8c980c3dd9 [ 83.467449][ T4303] Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48 [ 83.487407][ T4303] RSP: 002b:00007ffd50af1598 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 83.496385][ T4303] RAX: ffffffffffffffda RBX: 00007f8c9833cfa0 RCX: 00007f8c980c3dd9 [ 83.504532][ T4303] RDX: 0000000000000008 RSI: 0000200000000080 RDI: 0000000000000003 [ 83.512946][ T4303] RBP: 00007f8c98159d69 R08: 0000000000000000 R09: 0000000000000000 [ 83.521305][ T4303] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 83.529365][ T4303] R13: 00007f8c9833cfac R14: 00007f8c9833cfa0 R15: 00007f8c9833cfa0 [ 83.537340][ T4303]