Warning: Permanently added '10.128.1.4' (ED25519) to the list of known hosts. 2026/04/11 12:43:13 parsed 1 programs [ 72.008649][ T4190] cgroup: Unknown subsys name 'net' [ 72.115016][ T4190] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size = 127995904 bytes [ 73.688957][ T4190] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k FS [ 76.370064][ T4227] chnl_net:caif_netlink_parms(): no params data found [ 76.443002][ T4227] bridge0: port 1(bridge_slave_0) entered blocking state [ 76.450913][ T4227] bridge0: port 1(bridge_slave_0) entered disabled state [ 76.460665][ T4227] device bridge_slave_0 entered promiscuous mode [ 76.470845][ T4227] bridge0: port 2(bridge_slave_1) entered blocking state [ 76.479590][ T4227] bridge0: port 2(bridge_slave_1) entered disabled state [ 76.488034][ T4227] device bridge_slave_1 entered promiscuous mode [ 76.517044][ T4227] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 76.530053][ T4227] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 76.561268][ T4227] team0: Port device team_slave_0 added [ 76.569362][ T4227] team0: Port device team_slave_1 added [ 76.593996][ T4227] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 76.602659][ T4227] 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. [ 76.630121][ T4227] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 76.643650][ T4227] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 76.651929][ T4227] 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. [ 76.679473][ T4227] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 76.722164][ T4227] device hsr_slave_0 entered promiscuous mode [ 76.730500][ T4227] device hsr_slave_1 entered promiscuous mode [ 76.875081][ T4227] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 76.887554][ T4227] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 76.899330][ T4227] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 76.910440][ T4227] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 76.941066][ T4227] bridge0: port 2(bridge_slave_1) entered blocking state [ 76.948460][ T4227] bridge0: port 2(bridge_slave_1) entered forwarding state [ 76.956530][ T4227] bridge0: port 1(bridge_slave_0) entered blocking state [ 76.963984][ T4227] bridge0: port 1(bridge_slave_0) entered forwarding state [ 77.024063][ T4227] 8021q: adding VLAN 0 to HW filter on device bond0 [ 77.039408][ T1210] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 77.050566][ T1210] bridge0: port 1(bridge_slave_0) entered disabled state [ 77.059027][ T1210] bridge0: port 2(bridge_slave_1) entered disabled state [ 77.067227][ T1210] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 77.082260][ T4227] 8021q: adding VLAN 0 to HW filter on device team0 [ 77.096205][ T565] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 77.105400][ T565] bridge0: port 1(bridge_slave_0) entered blocking state [ 77.112644][ T565] bridge0: port 1(bridge_slave_0) entered forwarding state [ 77.129852][ T565] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 77.141629][ T565] bridge0: port 2(bridge_slave_1) entered blocking state [ 77.148771][ T565] bridge0: port 2(bridge_slave_1) entered forwarding state [ 77.167789][ T1210] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 77.183249][ T1210] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 77.191793][ T1210] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 77.210417][ T4227] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 77.222570][ T4227] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 77.236371][ T1210] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 77.246730][ T1210] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 77.259819][ T1210] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 77.358703][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 77.371790][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 77.388748][ T4227] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 77.409531][ T565] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 77.418715][ T565] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 77.441830][ T4227] device veth0_vlan entered promiscuous mode [ 77.450224][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 77.464952][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 77.473696][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 77.482750][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 77.510316][ T4227] device veth1_vlan entered promiscuous mode [ 77.540724][ T565] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 77.549940][ T565] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 77.559143][ T565] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 77.568028][ T565] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 77.580385][ T4227] device veth0_macvtap entered promiscuous mode [ 77.590864][ T4227] device veth1_macvtap entered promiscuous mode [ 77.606576][ T4227] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 77.614093][ T565] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 77.623683][ T565] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 77.632597][ T565] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 77.641435][ T565] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 77.663610][ T4227] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 77.671526][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 77.686404][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 77.698058][ T4227] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 77.707499][ T4227] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 77.716414][ T4227] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 77.725629][ T4227] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 77.833251][ T4227] syz-executor (4227) used greatest stack depth: 21008 bytes left [ 77.947982][ T144] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 77.959791][ T144] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 77.971704][ T1210] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 78.004072][ T1210] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 78.012042][ T1210] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 78.020917][ T1210] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2026/04/11 12:43:24 executed programs: 0 [ 79.928677][ T9] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 80.052886][ T4286] chnl_net:caif_netlink_parms(): no params data found [ 80.099384][ T4286] bridge0: port 1(bridge_slave_0) entered blocking state [ 80.106654][ T4286] bridge0: port 1(bridge_slave_0) entered disabled state [ 80.114856][ T4286] device bridge_slave_0 entered promiscuous mode [ 80.123006][ T4286] bridge0: port 2(bridge_slave_1) entered blocking state [ 80.130400][ T4286] bridge0: port 2(bridge_slave_1) entered disabled state [ 80.138427][ T4286] device bridge_slave_1 entered promiscuous mode [ 80.159636][ T4286] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 80.171281][ T4286] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 80.195390][ T4286] team0: Port device team_slave_0 added [ 80.203215][ T4286] team0: Port device team_slave_1 added [ 80.222167][ T4286] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 80.229632][ T4286] 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. [ 80.255903][ T4286] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 80.268497][ T4286] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 80.275833][ T4286] 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. [ 80.302103][ T4286] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 80.333398][ T4286] device hsr_slave_0 entered promiscuous mode [ 80.340202][ T4286] device hsr_slave_1 entered promiscuous mode [ 80.346919][ T4286] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 80.355100][ T4286] Cannot create hsr debugfs directory [ 81.986037][ T21] Bluetooth: hci0: command 0x0409 tx timeout [ 82.972931][ T9] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 83.031128][ T9] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 83.082880][ T9] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 84.040528][ T4286] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 84.049795][ T4286] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 84.059929][ T4286] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 84.067409][ T23] Bluetooth: hci0: command 0x041b tx timeout [ 84.102458][ T4286] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 84.178970][ T4286] 8021q: adding VLAN 0 to HW filter on device bond0 [ 84.196051][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 84.204099][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 84.215446][ T4286] 8021q: adding VLAN 0 to HW filter on device team0 [ 84.231216][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 84.240732][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 84.249539][ T154] bridge0: port 1(bridge_slave_0) entered blocking state [ 84.256686][ T154] bridge0: port 1(bridge_slave_0) entered forwarding state [ 84.266278][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 84.296689][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 84.307315][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 84.316033][ T154] bridge0: port 2(bridge_slave_1) entered blocking state [ 84.323085][ T154] bridge0: port 2(bridge_slave_1) entered forwarding state [ 84.335972][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 84.348024][ T565] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 84.363329][ T565] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 84.373922][ T565] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 84.382709][ T565] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 84.391788][ T565] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 84.400760][ T565] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 84.440314][ T4286] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 84.452022][ T4286] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 84.468678][ T565] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 84.477790][ T565] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 84.486813][ T565] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 84.497236][ T565] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 84.505777][ T565] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 84.628740][ T565] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 84.636297][ T565] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 84.650593][ T4286] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 84.693935][ T1210] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 84.704292][ T1210] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 84.747210][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 84.755990][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 84.764433][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 84.772998][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 84.791256][ T4286] device veth0_vlan entered promiscuous mode [ 84.817429][ T4286] device veth1_vlan entered promiscuous mode [ 84.840023][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 84.850397][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 84.858665][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 84.868056][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 84.879359][ T4286] device veth0_macvtap entered promiscuous mode [ 84.890609][ T4286] device veth1_macvtap entered promiscuous mode [ 84.912831][ T4286] batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3e) already exists on: batadv_slave_0 [ 84.924769][ T4286] batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems! [ 84.936510][ T4286] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 84.944164][ T1210] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 84.953169][ T1210] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 84.961327][ T1210] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 84.970664][ T1210] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 84.986249][ T9] device hsr_slave_0 left promiscuous mode [ 84.992886][ T9] device hsr_slave_1 left promiscuous mode [ 84.999545][ T9] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 85.008328][ T9] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 85.016833][ T9] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 85.024330][ T9] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 85.033041][ T9] device bridge_slave_1 left promiscuous mode [ 85.040338][ T9] bridge0: port 2(bridge_slave_1) entered disabled state [ 85.056425][ T9] device bridge_slave_0 left promiscuous mode [ 85.062716][ T9] bridge0: port 1(bridge_slave_0) entered disabled state [ 85.081498][ T9] device veth1_macvtap left promiscuous mode [ 85.088020][ T9] device veth0_macvtap left promiscuous mode [ 85.094325][ T9] device veth1_vlan left promiscuous mode [ 85.100383][ T9] device veth0_vlan left promiscuous mode [ 85.288585][ T9] team0 (unregistering): Port device team_slave_1 removed [ 85.304727][ T9] team0 (unregistering): Port device team_slave_0 removed [ 85.320754][ T9] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 85.336182][ T9] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 85.405727][ T9] bond0 (unregistering): Released all slaves [ 85.462897][ T4286] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 85.473179][ T1210] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 85.482678][ T1210] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 85.494356][ T4286] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 85.503252][ T4286] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 85.513117][ T4286] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 85.522592][ T4286] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 85.602822][ T154] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 85.613038][ T154] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 85.623675][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 85.660609][ T154] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 85.670537][ T154] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 85.679216][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 85.799641][ T4341] [ 85.802025][ T4341] ====================================================== [ 85.809063][ T4341] WARNING: possible circular locking dependency detected [ 85.816288][ T4341] syzkaller #0 Not tainted [ 85.820718][ T4341] ------------------------------------------------------ [ 85.827864][ T4341] syz.0.17/4341 is trying to acquire lock: [ 85.833689][ T4341] ffff8880742b4c28 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}, at: __flush_work+0xfa/0x210 [ 85.844805][ T4341] [ 85.844805][ T4341] but task is already holding lock: [ 85.852227][ T4341] ffffffff8d6c51a8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x18b/0x560 [ 85.861943][ T4341] [ 85.861943][ T4341] which lock already depends on the new lock. [ 85.861943][ T4341] [ 85.872370][ T4341] [ 85.872370][ T4341] the existing dependency chain (in reverse order) is: [ 85.881492][ T4341] [ 85.881492][ T4341] -> #4 (rfkill_global_mutex){+.+.}-{3:3}: [ 85.889606][ T4341] __mutex_lock_common+0x1e3/0x2400 [ 85.895363][ T4341] mutex_lock_nested+0x17/0x20 [ 85.900697][ T4341] rfkill_register+0x33/0x8a0 [ 85.905956][ T4341] hci_register_dev+0x452/0x970 [ 85.911360][ T4341] vhci_create_device+0x32c/0x5c0 [ 85.916976][ T4341] vhci_write+0x391/0x450 [ 85.921866][ T4341] vfs_write+0x745/0xd60 [ 85.926663][ T4341] ksys_write+0x152/0x260 [ 85.931539][ T4341] do_syscall_64+0x4c/0xa0 [ 85.936513][ T4341] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 85.942987][ T4341] [ 85.942987][ T4341] -> #3 (&data->open_mutex){+.+.}-{3:3}: [ 85.950928][ T4341] __mutex_lock_common+0x1e3/0x2400 [ 85.956692][ T4341] mutex_lock_nested+0x17/0x20 [ 85.962043][ T4341] vhci_send_frame+0x88/0x100 [ 85.967274][ T4341] hci_send_frame+0x1a9/0x2e0 [ 85.972508][ T4341] hci_tx_work+0x9f9/0x1710 [ 85.977560][ T4341] process_one_work+0x85f/0x1010 [ 85.983053][ T4341] worker_thread+0xaa6/0x1290 [ 85.988284][ T4341] kthread+0x436/0x520 [ 85.992921][ T4341] ret_from_fork+0x1f/0x30 [ 85.997888][ T4341] [ 85.997888][ T4341] -> #2 ((work_completion)(&hdev->tx_work)){+.+.}-{0:0}: [ 86.007124][ T4341] __flush_work+0x116/0x210 [ 86.012215][ T4341] hci_dev_do_close+0x1e7/0x1030 [ 86.017712][ T4341] hci_unregister_dev+0x2d7/0x580 [ 86.023293][ T4341] vhci_release+0x73/0xc0 [ 86.028178][ T4341] __fput+0x234/0x930 [ 86.032710][ T4341] task_work_run+0x125/0x1a0 [ 86.037870][ T4341] do_exit+0x626/0x20c0 [ 86.042592][ T4341] do_group_exit+0x12e/0x300 [ 86.047832][ T4341] get_signal+0x6ca/0x12c0 [ 86.052801][ T4341] arch_do_signal_or_restart+0xe7/0x12c0 [ 86.058995][ T4341] exit_to_user_mode_loop+0x9e/0x130 [ 86.064833][ T4341] exit_to_user_mode_prepare+0xee/0x180 [ 86.070924][ T4341] syscall_exit_to_user_mode+0x16/0x40 [ 86.076938][ T4341] do_syscall_64+0x58/0xa0 [ 86.081907][ T4341] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 86.088361][ T4341] [ 86.088361][ T4341] -> #1 (&hdev->req_lock){+.+.}-{3:3}: [ 86.096038][ T4341] __mutex_lock_common+0x1e3/0x2400 [ 86.101788][ T4341] mutex_lock_nested+0x17/0x20 [ 86.107110][ T4341] bg_scan_update+0x44/0x3b0 [ 86.112258][ T4341] process_one_work+0x85f/0x1010 [ 86.117747][ T4341] worker_thread+0xaa6/0x1290 [ 86.122978][ T4341] kthread+0x436/0x520 [ 86.127598][ T4341] ret_from_fork+0x1f/0x30 [ 86.132569][ T4341] [ 86.132569][ T4341] -> #0 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}: [ 86.142421][ T4341] __lock_acquire+0x2c42/0x7d10 [ 86.148045][ T4341] lock_acquire+0x19e/0x400 [ 86.153117][ T4341] __flush_work+0x116/0x210 [ 86.158186][ T4341] __cancel_work_timer+0x3f4/0x560 [ 86.163853][ T4341] hci_request_cancel_all+0xcc/0x300 [ 86.169698][ T4341] hci_dev_do_close+0x4e/0x1030 [ 86.175125][ T4341] hci_rfkill_set_block+0x10a/0x190 [ 86.180883][ T4341] rfkill_set_block+0x1c6/0x420 [ 86.186289][ T4341] rfkill_fop_write+0x452/0x560 [ 86.191706][ T4341] vfs_write+0x30b/0xd60 [ 86.196500][ T4341] ksys_write+0x152/0x260 [ 86.201384][ T4341] do_syscall_64+0x4c/0xa0 [ 86.206382][ T4341] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 86.212829][ T4341] [ 86.212829][ T4341] other info that might help us debug this: [ 86.212829][ T4341] [ 86.223170][ T4341] Chain exists of: [ 86.223170][ T4341] (work_completion)(&hdev->bg_scan_update) --> &data->open_mutex --> rfkill_global_mutex [ 86.223170][ T4341] [ 86.238936][ T4341] Possible unsafe locking scenario: [ 86.238936][ T4341] [ 86.246415][ T4341] CPU0 CPU1 [ 86.251805][ T4341] ---- ---- [ 86.257198][ T4341] lock(rfkill_global_mutex); [ 86.261999][ T4341] lock(&data->open_mutex); [ 86.269138][ T4341] lock(rfkill_global_mutex); [ 86.276453][ T4341] lock((work_completion)(&hdev->bg_scan_update)); [ 86.283075][ T4341] [ 86.283075][ T4341] *** DEADLOCK *** [ 86.283075][ T4341] [ 86.291238][ T4341] 1 lock held by syz.0.17/4341: [ 86.296210][ T4341] #0: ffffffff8d6c51a8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x18b/0x560 [ 86.306351][ T4341] [ 86.306351][ T4341] stack backtrace: [ 86.312290][ T4341] CPU: 1 PID: 4341 Comm: syz.0.17 Not tainted syzkaller #0 [ 86.319519][ T4341] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 86.329619][ T4341] Call Trace: [ 86.332966][ T4341] [ 86.335947][ T4341] dump_stack_lvl+0x188/0x250 [ 86.340653][ T4341] ? load_image+0x400/0x400 [ 86.345185][ T4341] ? show_regs_print_info+0x20/0x20 [ 86.350424][ T4341] ? print_circular_bug+0x12b/0x1a0 [ 86.355653][ T4341] check_noncircular+0x296/0x330 [ 86.360636][ T4341] ? look_up_lock_class+0x71/0x110 [ 86.365788][ T4341] ? add_chain_block+0x940/0x940 [ 86.370749][ T4341] ? lockdep_lock+0xf1/0x1f0 [ 86.375375][ T4341] ? __lock_acquire+0x12e8/0x7d10 [ 86.380484][ T4341] ? mark_lock+0x94/0x320 [ 86.384841][ T4341] ? _find_first_zero_bit+0xce/0xf0 [ 86.390074][ T4341] __lock_acquire+0x2c42/0x7d10 [ 86.394978][ T4341] ? verify_lock_unused+0x140/0x140 [ 86.400206][ T4341] ? verify_lock_unused+0x140/0x140 [ 86.405437][ T4341] ? mark_lock+0x94/0x320 [ 86.409805][ T4341] lock_acquire+0x19e/0x400 [ 86.414344][ T4341] ? __flush_work+0xfa/0x210 [ 86.418968][ T4341] ? __lock_acquire+0x7d10/0x7d10 [ 86.424040][ T4341] ? read_lock_is_recursive+0x10/0x10 [ 86.429528][ T4341] ? start_flush_work+0x776/0x820 [ 86.434582][ T4341] __flush_work+0x116/0x210 [ 86.439153][ T4341] ? __flush_work+0xfa/0x210 [ 86.443776][ T4341] ? flush_work+0x20/0x20 [ 86.448135][ T4341] ? try_to_grab_pending+0xfa/0x7f0 [ 86.453367][ T4341] ? mark_lock+0x94/0x320 [ 86.457741][ T4341] ? lockdep_hardirqs_on_prepare+0x409/0x770 [ 86.463760][ T4341] ? lock_chain_count+0x20/0x20 [ 86.468640][ T4341] ? mark_lock+0x94/0x320 [ 86.473004][ T4341] ? __cancel_work_timer+0x36a/0x560 [ 86.478347][ T4341] __cancel_work_timer+0x3f4/0x560 [ 86.483503][ T4341] ? cancel_work_sync+0x20/0x20 [ 86.488391][ T4341] ? __cancel_work+0x1f9/0x2e0 [ 86.493186][ T4341] ? lockdep_hardirqs_on+0x94/0x140 [ 86.498416][ T4341] ? __cancel_work+0x27b/0x2e0 [ 86.503218][ T4341] ? cancel_work+0x20/0x20 [ 86.507664][ T4341] ? lock_chain_count+0x20/0x20 [ 86.512562][ T4341] hci_request_cancel_all+0xcc/0x300 [ 86.518081][ T4341] hci_dev_do_close+0x4e/0x1030 [ 86.522967][ T4341] ? _raw_spin_unlock_irqrestore+0xc1/0x120 [ 86.528980][ T4341] ? _raw_spin_unlock+0x40/0x40 [ 86.533865][ T4341] hci_rfkill_set_block+0x10a/0x190 [ 86.539187][ T4341] ? rcu_lock_release+0x20/0x20 [ 86.544069][ T4341] rfkill_set_block+0x1c6/0x420 [ 86.548990][ T4341] rfkill_fop_write+0x452/0x560 [ 86.553879][ T4341] ? rfkill_fop_read+0x4d0/0x4d0 [ 86.558847][ T4341] ? common_file_perm+0x110/0x1c0 [ 86.563927][ T4341] ? fsnotify_perm+0x5d/0x560 [ 86.568640][ T4341] ? security_file_permission+0x75/0xa0 [ 86.574304][ T4341] ? rfkill_fop_read+0x4d0/0x4d0 [ 86.579315][ T4341] vfs_write+0x30b/0xd60 [ 86.583590][ T4341] ? file_end_write+0x250/0x250 [ 86.588576][ T4341] ? __context_tracking_exit+0x4c/0x80 [ 86.594127][ T4341] ? __lock_acquire+0x7d10/0x7d10 [ 86.599194][ T4341] ? __fdget_pos+0x1e2/0x370 [ 86.603826][ T4341] ksys_write+0x152/0x260 [ 86.608200][ T4341] ? __ia32_sys_read+0x80/0x80 [ 86.613088][ T4341] ? lockdep_hardirqs_on+0x94/0x140 [ 86.618411][ T4341] do_syscall_64+0x4c/0xa0 [ 86.622885][ T4341] ? clear_bhb_loop+0x30/0x80 [ 86.627594][ T4341] ? clear_bhb_loop+0x30/0x80 [ 86.632309][ T4341] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 86.638255][ T4341] RIP: 0033:0x7f5be9ee2819 [ 86.642788][ T4341] 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 [ 86.662514][ T4341] RSP: 002b:00007fff0ca82ae8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 86.670963][ T4341] RAX: ffffffffffffffda RBX: 00007f5bea15bfa0 RCX: 00007f5be9ee2819 [ 86.678979][ T4341] RDX: 0000000000000008 RSI: 0000200000000080 RDI: 0000000000000003 [ 86.686984][ T4341] RBP: 00007f5be9f78c91 R08: 0000000000000000 R09: 0000000000000000 [ 86.694998][ T4341] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 86.703118][ T4341] R13: 00007f5bea15bfac R14: 00007f5bea15bfa0 R15: 00007f5bea15bfa0 [ 86.711133][ T4341] [ 86.724969][ T23] Bluetooth: hci0: command 0x040f tx timeout [ 86.786207][ T1325] cfg80211: failed to load regulatory.db