Warning: Permanently added '10.128.1.135' (ED25519) to the list of known hosts. 2026/04/29 08:13:50 parsed 1 programs [ 67.146700][ T4187] cgroup: Unknown subsys name 'net' [ 67.258256][ T4187] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size = 127995904 bytes [ 68.793661][ T4187] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k FS [ 70.186961][ T154] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 70.197813][ T154] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 70.208163][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 70.226444][ T144] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 70.235020][ T144] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 70.243576][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 71.656136][ T1427] ieee802154 phy0 wpan0: encryption failed: -22 [ 71.663676][ T1427] ieee802154 phy1 wpan1: encryption failed: -22 [ 72.755030][ T4255] chnl_net:caif_netlink_parms(): no params data found [ 72.838482][ T4255] bridge0: port 1(bridge_slave_0) entered blocking state [ 72.846416][ T4255] bridge0: port 1(bridge_slave_0) entered disabled state [ 72.854632][ T4255] device bridge_slave_0 entered promiscuous mode [ 72.864405][ T4255] bridge0: port 2(bridge_slave_1) entered blocking state [ 72.871615][ T4255] bridge0: port 2(bridge_slave_1) entered disabled state [ 72.879657][ T4255] device bridge_slave_1 entered promiscuous mode [ 72.899706][ T4255] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 72.910571][ T4255] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 72.930802][ T4255] team0: Port device team_slave_0 added [ 72.938492][ T4255] team0: Port device team_slave_1 added [ 72.953631][ T4255] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 72.960612][ T4255] 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. [ 72.986837][ T4255] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 72.999915][ T4255] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 73.007250][ T4255] 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. [ 73.034152][ T4255] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 73.062263][ T4255] device hsr_slave_0 entered promiscuous mode [ 73.068972][ T4255] device hsr_slave_1 entered promiscuous mode [ 73.152836][ T4255] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 73.164103][ T4255] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 73.173708][ T4255] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 73.183942][ T4255] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 73.209062][ T4255] bridge0: port 2(bridge_slave_1) entered blocking state [ 73.216588][ T4255] bridge0: port 2(bridge_slave_1) entered forwarding state [ 73.224965][ T4255] bridge0: port 1(bridge_slave_0) entered blocking state [ 73.232656][ T4255] bridge0: port 1(bridge_slave_0) entered forwarding state [ 73.277230][ T4255] 8021q: adding VLAN 0 to HW filter on device bond0 [ 73.314721][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 73.324249][ T154] bridge0: port 1(bridge_slave_0) entered disabled state [ 73.333165][ T154] bridge0: port 2(bridge_slave_1) entered disabled state [ 73.348566][ T4255] 8021q: adding VLAN 0 to HW filter on device team0 [ 73.361930][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 73.370344][ T154] bridge0: port 1(bridge_slave_0) entered blocking state [ 73.377573][ T154] bridge0: port 1(bridge_slave_0) entered forwarding state [ 73.411404][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 73.420412][ T154] bridge0: port 2(bridge_slave_1) entered blocking state [ 73.427535][ T154] bridge0: port 2(bridge_slave_1) entered forwarding state [ 73.448398][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 73.463683][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 73.473403][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 73.511072][ T4255] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 73.522621][ T4255] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 73.534989][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 73.545535][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 73.556311][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 73.675983][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 73.683940][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 73.697319][ T4255] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 73.738685][ T156] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 73.747856][ T156] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 73.795289][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 73.804365][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 73.814762][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 73.823384][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 73.834986][ T4255] device veth0_vlan entered promiscuous mode [ 73.867321][ T4255] device veth1_vlan entered promiscuous mode [ 73.887786][ T4282] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 73.896916][ T4282] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 73.907734][ T4282] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 73.917310][ T4282] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 73.928292][ T4255] device veth0_macvtap entered promiscuous mode [ 73.940988][ T4255] device veth1_macvtap entered promiscuous mode [ 73.973231][ T4255] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 73.980878][ T4282] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 73.990056][ T4282] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 73.999650][ T4282] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 74.009855][ T4282] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 74.021298][ T4255] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 74.030041][ T4282] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 74.040560][ T4282] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 74.057116][ T4255] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 74.066224][ T4255] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 74.075228][ T4255] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 74.084253][ T4255] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 74.209229][ T4255] syz-executor (4255) used greatest stack depth: 21136 bytes left 2026/04/29 08:13:59 executed programs: 0 [ 75.244392][ T4299] chnl_net:caif_netlink_parms(): no params data found [ 75.316635][ T4299] bridge0: port 1(bridge_slave_0) entered blocking state [ 75.326264][ T4299] bridge0: port 1(bridge_slave_0) entered disabled state [ 75.336681][ T4299] device bridge_slave_0 entered promiscuous mode [ 75.350480][ T4299] bridge0: port 2(bridge_slave_1) entered blocking state [ 75.359413][ T4299] bridge0: port 2(bridge_slave_1) entered disabled state [ 75.370697][ T4299] device bridge_slave_1 entered promiscuous mode [ 75.404110][ T4299] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 75.419662][ T4299] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 75.456143][ T4299] team0: Port device team_slave_0 added [ 75.463908][ T4299] team0: Port device team_slave_1 added [ 75.487114][ T4299] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 75.494411][ T4299] 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. [ 75.520944][ T4299] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 75.533710][ T4299] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 75.540919][ T4299] 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. [ 75.568086][ T4299] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 75.600972][ T4299] device hsr_slave_0 entered promiscuous mode [ 75.609628][ T4299] device hsr_slave_1 entered promiscuous mode [ 75.616924][ T4299] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 75.625392][ T4299] Cannot create hsr debugfs directory [ 75.716732][ T4299] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 77.182542][ T4281] Bluetooth: hci0: command 0x0409 tx timeout [ 78.529115][ T4299] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 78.868107][ T4299] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 78.959049][ T4299] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 79.036262][ T4299] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 79.046302][ T4299] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 79.055862][ T4299] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 79.064814][ T4299] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 79.127075][ T4299] 8021q: adding VLAN 0 to HW filter on device bond0 [ 79.139511][ T4282] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 79.148149][ T4282] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 79.159480][ T4299] 8021q: adding VLAN 0 to HW filter on device team0 [ 79.182818][ T4282] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 79.192993][ T4282] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 79.202214][ T4282] bridge0: port 1(bridge_slave_0) entered blocking state [ 79.209857][ T4282] bridge0: port 1(bridge_slave_0) entered forwarding state [ 79.218809][ T4282] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 79.242978][ T4282] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 79.252248][ T4282] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 79.260900][ T4282] bridge0: port 2(bridge_slave_1) entered blocking state [ 79.268119][ T4282] bridge0: port 2(bridge_slave_1) entered forwarding state [ 79.276170][ T4189] Bluetooth: hci0: command 0x041b tx timeout [ 79.293408][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 79.305678][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 79.317925][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 79.328196][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 79.340263][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 79.358967][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 79.368322][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 79.380569][ T4282] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 79.389451][ T4282] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 79.414671][ T4282] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 79.423466][ T4282] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 79.434815][ T4299] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 79.539686][ T4282] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 79.548123][ T4282] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 79.561306][ T4299] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 79.589171][ T4282] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 79.598166][ T4282] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 79.620991][ T144] device hsr_slave_0 left promiscuous mode [ 79.627874][ T144] device hsr_slave_1 left promiscuous mode [ 79.634997][ T144] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 79.643410][ T144] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 79.653738][ T144] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 79.663033][ T144] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 79.670778][ T144] device bridge_slave_1 left promiscuous mode [ 79.678637][ T144] bridge0: port 2(bridge_slave_1) entered disabled state [ 79.694379][ T144] device bridge_slave_0 left promiscuous mode [ 79.700911][ T144] bridge0: port 1(bridge_slave_0) entered disabled state [ 79.718798][ T144] device veth1_macvtap left promiscuous mode [ 79.725238][ T144] device veth0_macvtap left promiscuous mode [ 79.731375][ T144] device veth1_vlan left promiscuous mode [ 79.738760][ T144] device veth0_vlan left promiscuous mode [ 79.885593][ T144] team0 (unregistering): Port device team_slave_1 removed [ 79.900128][ T144] team0 (unregistering): Port device team_slave_0 removed [ 79.915807][ T144] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 79.929258][ T144] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 79.984325][ T144] bond0 (unregistering): Released all slaves [ 80.059206][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 80.068221][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 80.081216][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 80.089832][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 80.099581][ T4299] device veth0_vlan entered promiscuous mode [ 80.117777][ T4299] device veth1_vlan entered promiscuous mode [ 80.145958][ T4299] device veth0_macvtap entered promiscuous mode [ 80.153857][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 80.164419][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 80.173087][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 80.183451][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 80.194581][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 80.203987][ T4299] device veth1_macvtap entered promiscuous mode [ 80.223022][ T4299] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 80.230541][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 80.240814][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 80.253233][ T4299] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 80.266281][ T4299] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 80.276246][ T4299] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 80.286132][ T4299] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 80.295303][ T4299] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 80.306958][ T4282] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 80.316863][ T4282] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 80.368338][ T4282] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 80.378821][ T4282] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 80.387971][ T156] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 80.420109][ T156] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 80.429192][ T156] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 80.440821][ T156] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 80.564770][ T4312] [ 80.567185][ T4312] ====================================================== [ 80.574253][ T4312] WARNING: possible circular locking dependency detected [ 80.581305][ T4312] syzkaller #0 Not tainted [ 80.585740][ T4312] ------------------------------------------------------ [ 80.592956][ T4312] syz.0.17/4312 is trying to acquire lock: [ 80.599064][ T4312] ffff888022730c28 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}, at: __flush_work+0xfa/0x210 [ 80.610165][ T4312] [ 80.610165][ T4312] but task is already holding lock: [ 80.617642][ T4312] ffffffff8d6c5de8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x18b/0x560 [ 80.627345][ T4312] [ 80.627345][ T4312] which lock already depends on the new lock. [ 80.627345][ T4312] [ 80.637993][ T4312] [ 80.637993][ T4312] the existing dependency chain (in reverse order) is: [ 80.647029][ T4312] [ 80.647029][ T4312] -> #4 (rfkill_global_mutex){+.+.}-{3:3}: [ 80.655045][ T4312] __mutex_lock_common+0x1e3/0x2400 [ 80.660789][ T4312] mutex_lock_nested+0x17/0x20 [ 80.666266][ T4312] rfkill_register+0x33/0x980 [ 80.671489][ T4312] hci_register_dev+0x452/0x970 [ 80.677094][ T4312] vhci_create_device+0x32c/0x5c0 [ 80.682918][ T4312] vhci_write+0x391/0x450 [ 80.687788][ T4312] vfs_write+0x745/0xd60 [ 80.692568][ T4312] ksys_write+0x152/0x260 [ 80.697692][ T4312] do_syscall_64+0x4c/0xa0 [ 80.702647][ T4312] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 80.709355][ T4312] [ 80.709355][ T4312] -> #3 (&data->open_mutex){+.+.}-{3:3}: [ 80.717748][ T4312] __mutex_lock_common+0x1e3/0x2400 [ 80.723969][ T4312] mutex_lock_nested+0x17/0x20 [ 80.729553][ T4312] vhci_send_frame+0x88/0x100 [ 80.735090][ T4312] hci_send_frame+0x1a9/0x2e0 [ 80.740422][ T4312] hci_tx_work+0x9f9/0x1710 [ 80.745584][ T4312] process_one_work+0x85f/0x1010 [ 80.751096][ T4312] worker_thread+0xaa6/0x1290 [ 80.756591][ T4312] kthread+0x436/0x520 [ 80.761220][ T4312] ret_from_fork+0x1f/0x30 [ 80.766178][ T4312] [ 80.766178][ T4312] -> #2 ((work_completion)(&hdev->tx_work)){+.+.}-{0:0}: [ 80.775630][ T4312] __flush_work+0x116/0x210 [ 80.780954][ T4312] hci_dev_do_close+0x1e7/0x1030 [ 80.786566][ T4312] hci_unregister_dev+0x2d7/0x580 [ 80.792228][ T4312] vhci_release+0x73/0xc0 [ 80.797197][ T4312] __fput+0x234/0x930 [ 80.801872][ T4312] task_work_run+0x125/0x1a0 [ 80.807003][ T4312] do_exit+0x626/0x20c0 [ 80.811694][ T4312] do_group_exit+0x12e/0x300 [ 80.817239][ T4312] get_signal+0x6ca/0x12c0 [ 80.822225][ T4312] arch_do_signal_or_restart+0xe7/0x12c0 [ 80.828421][ T4312] exit_to_user_mode_loop+0x9e/0x130 [ 80.834431][ T4312] exit_to_user_mode_prepare+0xee/0x180 [ 80.840712][ T4312] syscall_exit_to_user_mode+0x16/0x40 [ 80.846957][ T4312] do_syscall_64+0x58/0xa0 [ 80.851905][ T4312] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 80.858578][ T4312] [ 80.858578][ T4312] -> #1 (&hdev->req_lock){+.+.}-{3:3}: [ 80.866499][ T4312] __mutex_lock_common+0x1e3/0x2400 [ 80.872243][ T4312] mutex_lock_nested+0x17/0x20 [ 80.877627][ T4312] bg_scan_update+0x44/0x3b0 [ 80.882733][ T4312] process_one_work+0x85f/0x1010 [ 80.888795][ T4312] worker_thread+0xaa6/0x1290 [ 80.894011][ T4312] kthread+0x436/0x520 [ 80.898720][ T4312] ret_from_fork+0x1f/0x30 [ 80.903687][ T4312] [ 80.903687][ T4312] -> #0 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}: [ 80.913808][ T4312] __lock_acquire+0x2c42/0x7d10 [ 80.919232][ T4312] lock_acquire+0x19e/0x400 [ 80.924380][ T4312] __flush_work+0x116/0x210 [ 80.929607][ T4312] __cancel_work_timer+0x3f4/0x560 [ 80.935270][ T4312] hci_request_cancel_all+0xcc/0x300 [ 80.941120][ T4312] hci_dev_do_close+0x4e/0x1030 [ 80.946732][ T4312] hci_rfkill_set_block+0x10a/0x190 [ 80.952652][ T4312] rfkill_set_block+0x1c9/0x3d0 [ 80.958052][ T4312] rfkill_fop_write+0x452/0x560 [ 80.963457][ T4312] vfs_write+0x30b/0xd60 [ 80.968392][ T4312] ksys_write+0x152/0x260 [ 80.973380][ T4312] do_syscall_64+0x4c/0xa0 [ 80.978351][ T4312] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 80.984800][ T4312] [ 80.984800][ T4312] other info that might help us debug this: [ 80.984800][ T4312] [ 80.995051][ T4312] Chain exists of: [ 80.995051][ T4312] (work_completion)(&hdev->bg_scan_update) --> &data->open_mutex --> rfkill_global_mutex [ 80.995051][ T4312] [ 81.011177][ T4312] Possible unsafe locking scenario: [ 81.011177][ T4312] [ 81.019014][ T4312] CPU0 CPU1 [ 81.024440][ T4312] ---- ---- [ 81.029830][ T4312] lock(rfkill_global_mutex); [ 81.034643][ T4312] lock(&data->open_mutex); [ 81.041780][ T4312] lock(rfkill_global_mutex); [ 81.049214][ T4312] lock((work_completion)(&hdev->bg_scan_update)); [ 81.055855][ T4312] [ 81.055855][ T4312] *** DEADLOCK *** [ 81.055855][ T4312] [ 81.064248][ T4312] 1 lock held by syz.0.17/4312: [ 81.069132][ T4312] #0: ffffffff8d6c5de8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x18b/0x560 [ 81.079641][ T4312] [ 81.079641][ T4312] stack backtrace: [ 81.085572][ T4312] CPU: 0 PID: 4312 Comm: syz.0.17 Not tainted syzkaller #0 [ 81.092997][ T4312] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 81.103258][ T4312] Call Trace: [ 81.106639][ T4312] [ 81.109687][ T4312] dump_stack_lvl+0x188/0x250 [ 81.114517][ T4312] ? load_image+0x400/0x400 [ 81.119069][ T4312] ? show_regs_print_info+0x20/0x20 [ 81.124391][ T4312] ? print_circular_bug+0x12b/0x1a0 [ 81.129631][ T4312] check_noncircular+0x296/0x330 [ 81.134689][ T4312] ? look_up_lock_class+0x71/0x110 [ 81.139849][ T4312] ? add_chain_block+0x940/0x940 [ 81.145090][ T4312] ? lockdep_lock+0xf1/0x1f0 [ 81.149721][ T4312] ? __lock_acquire+0x12e8/0x7d10 [ 81.154873][ T4312] ? mark_lock+0x94/0x320 [ 81.159422][ T4312] __lock_acquire+0x2c42/0x7d10 [ 81.164568][ T4312] ? verify_lock_unused+0x140/0x140 [ 81.169891][ T4312] ? verify_lock_unused+0x140/0x140 [ 81.175238][ T4312] ? mark_lock+0x94/0x320 [ 81.179615][ T4312] lock_acquire+0x19e/0x400 [ 81.184465][ T4312] ? __flush_work+0xfa/0x210 [ 81.189127][ T4312] ? __lock_acquire+0x7d10/0x7d10 [ 81.194289][ T4312] ? read_lock_is_recursive+0x10/0x10 [ 81.199825][ T4312] ? start_flush_work+0x776/0x820 [ 81.204976][ T4312] __flush_work+0x116/0x210 [ 81.209524][ T4312] ? __flush_work+0xfa/0x210 [ 81.214542][ T4312] ? flush_work+0x20/0x20 [ 81.219183][ T4312] ? try_to_grab_pending+0xfa/0x7f0 [ 81.224421][ T4312] ? mark_lock+0x94/0x320 [ 81.228787][ T4312] ? lockdep_hardirqs_on_prepare+0x409/0x770 [ 81.234948][ T4312] ? lock_chain_count+0x20/0x20 [ 81.240033][ T4312] ? mark_lock+0x94/0x320 [ 81.244406][ T4312] ? __cancel_work_timer+0x36a/0x560 [ 81.250043][ T4312] __cancel_work_timer+0x3f4/0x560 [ 81.255294][ T4312] ? cancel_work_sync+0x20/0x20 [ 81.260299][ T4312] ? __cancel_work+0x1f9/0x2e0 [ 81.265291][ T4312] ? lockdep_hardirqs_on+0x94/0x140 [ 81.270535][ T4312] ? __cancel_work+0x27b/0x2e0 [ 81.275347][ T4312] ? cancel_work+0x20/0x20 [ 81.279812][ T4312] ? lock_chain_count+0x20/0x20 [ 81.284797][ T4312] hci_request_cancel_all+0xcc/0x300 [ 81.290492][ T4312] hci_dev_do_close+0x4e/0x1030 [ 81.295388][ T4312] ? _raw_spin_unlock_irqrestore+0xc1/0x120 [ 81.301498][ T4312] ? _raw_spin_unlock+0x40/0x40 [ 81.306428][ T4312] hci_rfkill_set_block+0x10a/0x190 [ 81.311848][ T4312] ? rcu_lock_release+0x20/0x20 [ 81.317374][ T4312] rfkill_set_block+0x1c9/0x3d0 [ 81.322363][ T4312] rfkill_fop_write+0x452/0x560 [ 81.327247][ T4312] ? rfkill_fop_read+0x520/0x520 [ 81.332229][ T4312] ? common_file_perm+0x140/0x1c0 [ 81.337308][ T4312] ? fsnotify_perm+0x5d/0x560 [ 81.342019][ T4312] ? security_file_permission+0x75/0xa0 [ 81.347826][ T4312] ? rfkill_fop_read+0x520/0x520 [ 81.352954][ T4312] vfs_write+0x30b/0xd60 [ 81.357412][ T4312] ? file_end_write+0x250/0x250 [ 81.362607][ T4312] ? __context_tracking_exit+0x4c/0x80 [ 81.368205][ T4312] ? __lock_acquire+0x7d10/0x7d10 [ 81.373274][ T4312] ? __fdget_pos+0x1e2/0x370 [ 81.377907][ T4312] ksys_write+0x152/0x260 [ 81.382436][ T4312] ? __ia32_sys_read+0x80/0x80 [ 81.387400][ T4312] ? lockdep_hardirqs_on+0x94/0x140 [ 81.392763][ T4312] do_syscall_64+0x4c/0xa0 [ 81.397370][ T4312] ? clear_bhb_loop+0x30/0x80 [ 81.402175][ T4312] ? clear_bhb_loop+0x30/0x80 [ 81.406977][ T4312] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 81.413078][ T4312] RIP: 0033:0x7f5be0e52dd9 [ 81.417606][ T4312] 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 [ 81.437535][ T4312] RSP: 002b:00007fffadbac958 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 81.446074][ T4312] RAX: ffffffffffffffda RBX: 00007f5be10cbfa0 RCX: 00007f5be0e52dd9 [ 81.454339][ T4312] RDX: 0000000000000008 RSI: 0000200000000040 RDI: 0000000000000003 [ 81.462433][ T4312] RBP: 00007f5be0ee8d69 R08: 0000000000000000 R09: 0000000000000000 [ 81.470783][ T4312] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 81.478881][ T4312] R13: 00007f5be10cbfac R14: 00007f5be10cbfa0 R15: 00007f5be10cbfa0 [ 81.486905][ T4312] [ 81.493188][ T4281] Bluetooth: hci0: command 0x040f tx timeout