Warning: Permanently added '10.128.1.5' (ED25519) to the list of known hosts. 2026/08/21 07:29:59 parsed 1 programs 2026/08/21 07:29:59 serving rpc on tcp://35869 [ 63.825591][ T4198] cgroup: Unknown subsys name 'net' [ 63.956781][ T4198] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size = 127995904 bytes [ 65.239595][ T4198] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k FS [ 66.444043][ T1454] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 66.455097][ T1454] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 66.464966][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 66.481250][ T154] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 66.489313][ T154] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 66.497339][ T1454] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 66.738801][ T4222] chnl_net:caif_netlink_parms(): no params data found [ 66.780728][ T4222] bridge0: port 1(bridge_slave_0) entered blocking state [ 66.788166][ T4222] bridge0: port 1(bridge_slave_0) entered disabled state [ 66.796653][ T4222] device bridge_slave_0 entered promiscuous mode [ 66.805003][ T4222] bridge0: port 2(bridge_slave_1) entered blocking state [ 66.812203][ T4222] bridge0: port 2(bridge_slave_1) entered disabled state [ 66.820059][ T4222] device bridge_slave_1 entered promiscuous mode [ 66.842302][ T4222] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 66.853538][ T4222] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 66.872656][ T4222] team0: Port device team_slave_0 added [ 66.882771][ T4222] team0: Port device team_slave_1 added [ 66.897677][ T4222] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 66.904694][ T4222] batman_adv: batadv0: The MTU of interface batadv_slave_0 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. [ 66.930829][ T4222] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 66.947039][ T4222] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 66.954031][ T4222] batman_adv: batadv0: The MTU of interface batadv_slave_1 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. [ 66.980106][ T4222] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 67.006477][ T4222] device hsr_slave_0 entered promiscuous mode [ 67.013088][ T4222] device hsr_slave_1 entered promiscuous mode [ 67.095146][ T4222] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 67.104887][ T4222] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 67.115118][ T4222] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 67.136988][ T4222] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 67.156360][ T4222] bridge0: port 2(bridge_slave_1) entered blocking state [ 67.163507][ T4222] bridge0: port 2(bridge_slave_1) entered forwarding state [ 67.171179][ T4222] bridge0: port 1(bridge_slave_0) entered blocking state [ 67.178278][ T4222] bridge0: port 1(bridge_slave_0) entered forwarding state [ 67.237422][ T4222] 8021q: adding VLAN 0 to HW filter on device bond0 [ 67.259586][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 67.268086][ T9] bridge0: port 1(bridge_slave_0) entered disabled state [ 67.276796][ T9] bridge0: port 2(bridge_slave_1) entered disabled state [ 67.293351][ T4222] 8021q: adding VLAN 0 to HW filter on device team0 [ 67.303589][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 67.312402][ T9] bridge0: port 1(bridge_slave_0) entered blocking state [ 67.319452][ T9] bridge0: port 1(bridge_slave_0) entered forwarding state [ 67.343001][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 67.351774][ T9] bridge0: port 2(bridge_slave_1) entered blocking state [ 67.358824][ T9] bridge0: port 2(bridge_slave_1) entered forwarding state [ 67.369602][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 67.389303][ T4222] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 67.399976][ T4222] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 67.413582][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 67.422172][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 67.430596][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 67.440407][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 67.455279][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 67.558609][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 67.566714][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 67.581239][ T4222] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 67.600289][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 67.609415][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 67.631291][ T4222] device veth0_vlan entered promiscuous mode [ 67.639576][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 67.649335][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 67.663684][ T4222] device veth1_vlan entered promiscuous mode [ 67.671478][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 67.679875][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 67.689803][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 67.713836][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 67.723623][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 67.732354][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 67.744981][ T4222] device veth0_macvtap entered promiscuous mode [ 67.757023][ T4222] device veth1_macvtap entered promiscuous mode [ 67.775464][ T4222] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 67.784745][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 67.794037][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 67.802007][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 67.810582][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 67.824005][ T4222] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 67.840915][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 67.851162][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 67.862863][ T4222] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 67.872620][ T4222] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 67.881373][ T4222] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 67.891437][ T4222] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 67.982849][ T4222] syz-executor (4222) used greatest stack depth: 20304 bytes left [ 68.576075][ T144] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 70.827460][ T144] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 71.204542][ T1425] ieee802154 phy0 wpan0: encryption failed: -22 [ 71.210922][ T1425] ieee802154 phy1 wpan1: encryption failed: -22 [ 72.965909][ T144] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 73.027795][ T144] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 74.004310][ T144] device hsr_slave_0 left promiscuous mode [ 74.010545][ T144] device hsr_slave_1 left promiscuous mode [ 74.017933][ T144] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 74.025406][ T144] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 74.034221][ T144] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 74.041707][ T144] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 74.049187][ T144] device bridge_slave_1 left promiscuous mode [ 74.056387][ T144] bridge0: port 2(bridge_slave_1) entered disabled state [ 74.067930][ T144] device bridge_slave_0 left promiscuous mode [ 74.074945][ T144] bridge0: port 1(bridge_slave_0) entered disabled state [ 74.091295][ T144] device veth1_macvtap left promiscuous mode [ 74.097559][ T144] device veth0_macvtap left promiscuous mode [ 74.103818][ T144] device veth1_vlan left promiscuous mode [ 74.109706][ T144] device veth0_vlan left promiscuous mode [ 74.231284][ T144] team0 (unregistering): Port device team_slave_1 removed [ 74.243136][ T144] team0 (unregistering): Port device team_slave_0 removed [ 74.256298][ T144] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 74.268508][ T144] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 74.316897][ T144] bond0 (unregistering): Released all slaves 2026/08/21 07:30:12 executed programs: 0 [ 75.197174][ T4342] chnl_net:caif_netlink_parms(): no params data found [ 75.328300][ T4342] bridge0: port 1(bridge_slave_0) entered blocking state [ 75.337379][ T4342] bridge0: port 1(bridge_slave_0) entered disabled state [ 75.346635][ T4342] device bridge_slave_0 entered promiscuous mode [ 75.364497][ T4342] bridge0: port 2(bridge_slave_1) entered blocking state [ 75.371922][ T4342] bridge0: port 2(bridge_slave_1) entered disabled state [ 75.379944][ T4342] device bridge_slave_1 entered promiscuous mode [ 75.418786][ T4342] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 75.431459][ T4342] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 75.457329][ T4342] team0: Port device team_slave_0 added [ 75.465372][ T4342] team0: Port device team_slave_1 added [ 75.508386][ T4342] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 75.532767][ T4342] 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. [ 75.582644][ T4342] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 75.603282][ T4342] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 75.610256][ T4342] 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. [ 75.671618][ T4342] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 75.743554][ T4342] device hsr_slave_0 entered promiscuous mode [ 75.750381][ T4342] device hsr_slave_1 entered promiscuous mode [ 76.333002][ T4342] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 76.352788][ T4342] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 76.370052][ T4342] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 76.565100][ T4342] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 76.648715][ T4342] 8021q: adding VLAN 0 to HW filter on device bond0 [ 76.665922][ T1454] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 76.675247][ T1454] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 76.685993][ T4342] 8021q: adding VLAN 0 to HW filter on device team0 [ 76.697545][ T1454] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 76.707522][ T1454] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 76.716431][ T1454] bridge0: port 1(bridge_slave_0) entered blocking state [ 76.723544][ T1454] bridge0: port 1(bridge_slave_0) entered forwarding state [ 76.742087][ T1454] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 76.750169][ T1454] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 76.759174][ T1454] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 76.768339][ T1454] bridge0: port 2(bridge_slave_1) entered blocking state [ 76.775469][ T1454] bridge0: port 2(bridge_slave_1) entered forwarding state [ 76.786119][ T1454] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 76.796056][ T1454] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 76.814272][ T1454] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 76.824121][ T1454] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 76.834380][ T1454] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 76.844879][ T1454] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 76.854052][ T1454] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 76.862740][ T1454] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 76.874530][ T4342] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 76.886671][ T4342] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 76.897268][ T1454] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 76.905825][ T1454] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 76.914605][ T1454] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 77.032520][ T7] Bluetooth: hci0: command 0x0409 tx timeout [ 77.044196][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 77.052046][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 77.064688][ T4342] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 77.084435][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 77.095386][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 77.150693][ T4342] device veth0_vlan entered promiscuous mode [ 77.161620][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 77.170192][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 77.179492][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 77.188617][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 77.198691][ T4342] device veth1_vlan entered promiscuous mode [ 77.250979][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 77.259683][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 77.270086][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 77.279163][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 77.291012][ T4342] device veth0_macvtap entered promiscuous mode [ 77.333129][ T4342] device veth1_macvtap entered promiscuous mode [ 77.351242][ T4342] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 77.367360][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 77.375720][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 77.386113][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 77.394923][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 77.439548][ T4342] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 77.447760][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 77.456748][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 77.468773][ T4342] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 77.477797][ T4342] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 77.486563][ T4342] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 77.496095][ T4342] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 77.579912][ T9] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 77.589494][ T9] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 77.606837][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 77.619319][ T154] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 77.629121][ T154] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 77.667010][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 77.707752][ T4470] [ 77.710110][ T4470] ====================================================== [ 77.717118][ T4470] WARNING: possible circular locking dependency detected [ 77.724145][ T4470] syzkaller #0 Not tainted [ 77.728556][ T4470] ------------------------------------------------------ [ 77.735569][ T4470] syz.0.17/4470 is trying to acquire lock: [ 77.741374][ T4470] ffff88802034d028 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}, at: __flush_work+0xfa/0x210 [ 77.752442][ T4470] [ 77.752442][ T4470] but task is already holding lock: [ 77.759809][ T4470] ffffffff8d6d67e8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x1ae/0x560 [ 77.769481][ T4470] [ 77.769481][ T4470] which lock already depends on the new lock. [ 77.769481][ T4470] [ 77.779877][ T4470] [ 77.779877][ T4470] the existing dependency chain (in reverse order) is: [ 77.788897][ T4470] [ 77.788897][ T4470] -> #4 (rfkill_global_mutex){+.+.}-{3:3}: [ 77.796895][ T4470] __mutex_lock_common+0x1e5/0x2400 [ 77.802623][ T4470] mutex_lock_nested+0x17/0x20 [ 77.807914][ T4470] rfkill_register+0x2f/0x970 [ 77.813117][ T4470] hci_register_dev+0x459/0x980 [ 77.818489][ T4470] vhci_create_device+0x32e/0x5c0 [ 77.824037][ T4470] vhci_write+0x389/0x440 [ 77.828887][ T4470] vfs_write+0x748/0xd70 [ 77.833654][ T4470] ksys_write+0x153/0x260 [ 77.838508][ T4470] do_syscall_64+0x4c/0xa0 [ 77.843444][ T4470] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 77.849870][ T4470] [ 77.849870][ T4470] -> #3 (&data->open_mutex){+.+.}-{3:3}: [ 77.857683][ T4470] __mutex_lock_common+0x1e5/0x2400 [ 77.863410][ T4470] mutex_lock_nested+0x17/0x20 [ 77.868698][ T4470] vhci_send_frame+0x88/0x100 [ 77.873900][ T4470] hci_send_frame+0x1a9/0x2e0 [ 77.879102][ T4470] hci_tx_work+0x9b5/0x16d0 [ 77.884132][ T4470] process_one_work+0x867/0xff0 [ 77.889625][ T4470] worker_thread+0xad7/0x12a0 [ 77.894869][ T4470] kthread+0x42e/0x520 [ 77.899489][ T4470] ret_from_fork+0x1f/0x30 [ 77.904429][ T4470] [ 77.904429][ T4470] -> #2 ((work_completion)(&hdev->tx_work)){+.+.}-{0:0}: [ 77.913642][ T4470] __flush_work+0x116/0x210 [ 77.918670][ T4470] hci_dev_do_close+0x201/0x1020 [ 77.924129][ T4470] hci_unregister_dev+0x2eb/0x590 [ 77.929679][ T4470] vhci_release+0x73/0xc0 [ 77.934533][ T4470] __fput+0x212/0x8c0 [ 77.939042][ T4470] task_work_run+0x125/0x1a0 [ 77.944154][ T4470] do_exit+0x635/0x2110 [ 77.948834][ T4470] do_group_exit+0x12c/0x2f0 [ 77.953945][ T4470] get_signal+0x7eb/0x12e0 [ 77.958887][ T4470] arch_do_signal_or_restart+0xe6/0x12a0 [ 77.965048][ T4470] exit_to_user_mode_loop+0x9e/0x130 [ 77.970858][ T4470] exit_to_user_mode_prepare+0xee/0x180 [ 77.976924][ T4470] syscall_exit_to_user_mode+0x16/0x40 [ 77.982905][ T4470] do_syscall_64+0x58/0xa0 [ 77.987841][ T4470] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 77.994259][ T4470] [ 77.994259][ T4470] -> #1 (&hdev->req_lock){+.+.}-{3:3}: [ 78.001900][ T4470] __mutex_lock_common+0x1e5/0x2400 [ 78.007622][ T4470] mutex_lock_nested+0x17/0x20 [ 78.012910][ T4470] bg_scan_update+0x44/0x3b0 [ 78.018024][ T4470] process_one_work+0x867/0xff0 [ 78.023395][ T4470] worker_thread+0xad7/0x12a0 [ 78.028594][ T4470] kthread+0x42e/0x520 [ 78.033183][ T4470] ret_from_fork+0x1f/0x30 [ 78.038121][ T4470] [ 78.038121][ T4470] -> #0 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}: [ 78.047935][ T4470] __lock_acquire+0x2c66/0x7b50 [ 78.053310][ T4470] lock_acquire+0x19e/0x400 [ 78.058335][ T4470] __flush_work+0x116/0x210 [ 78.063359][ T4470] __cancel_work_timer+0x3f4/0x560 [ 78.068989][ T4470] hci_request_cancel_all+0xcc/0x300 [ 78.074795][ T4470] hci_dev_do_close+0x4e/0x1020 [ 78.080165][ T4470] hci_rfkill_set_block+0x101/0x180 [ 78.085885][ T4470] rfkill_set_block+0x1c1/0x3c0 [ 78.091257][ T4470] rfkill_fop_write+0x453/0x560 [ 78.096633][ T4470] vfs_write+0x304/0xd70 [ 78.101395][ T4470] ksys_write+0x153/0x260 [ 78.106246][ T4470] do_syscall_64+0x4c/0xa0 [ 78.111186][ T4470] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 78.117605][ T4470] [ 78.117605][ T4470] other info that might help us debug this: [ 78.117605][ T4470] [ 78.129215][ T4470] Chain exists of: [ 78.129215][ T4470] (work_completion)(&hdev->bg_scan_update) --> &data->open_mutex --> rfkill_global_mutex [ 78.129215][ T4470] [ 78.144937][ T4470] Possible unsafe locking scenario: [ 78.144937][ T4470] [ 78.152375][ T4470] CPU0 CPU1 [ 78.157734][ T4470] ---- ---- [ 78.163090][ T4470] lock(rfkill_global_mutex); [ 78.167853][ T4470] lock(&data->open_mutex); [ 78.174958][ T4470] lock(rfkill_global_mutex); [ 78.182236][ T4470] lock((work_completion)(&hdev->bg_scan_update)); [ 78.188822][ T4470] [ 78.188822][ T4470] *** DEADLOCK *** [ 78.188822][ T4470] [ 78.196955][ T4470] 1 lock held by syz.0.17/4470: [ 78.201799][ T4470] #0: ffffffff8d6d67e8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x1ae/0x560 [ 78.211900][ T4470] [ 78.211900][ T4470] stack backtrace: [ 78.217792][ T4470] CPU: 0 PID: 4470 Comm: syz.0.17 Not tainted syzkaller #0 [ 78.224984][ T4470] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 [ 78.235048][ T4470] Call Trace: [ 78.238326][ T4470] [ 78.241255][ T4470] dump_stack_lvl+0x188/0x250 [ 78.245934][ T4470] ? load_image+0x410/0x410 [ 78.250441][ T4470] ? show_regs_print_info+0x20/0x20 [ 78.255648][ T4470] ? print_circular_bug+0x12b/0x1a0 [ 78.260848][ T4470] check_noncircular+0x296/0x330 [ 78.265788][ T4470] ? look_up_lock_class+0x71/0x110 [ 78.270904][ T4470] ? add_chain_block+0x9b0/0x9b0 [ 78.275840][ T4470] ? lockdep_lock+0xf1/0x1f0 [ 78.280432][ T4470] ? __lock_acquire+0x1305/0x7b50 [ 78.285460][ T4470] ? mark_lock+0x94/0x320 [ 78.289785][ T4470] ? _find_first_zero_bit+0xd1/0xf0 [ 78.294986][ T4470] __lock_acquire+0x2c66/0x7b50 [ 78.299845][ T4470] ? __lock_acquire+0x7b50/0x7b50 [ 78.304875][ T4470] ? verify_lock_unused+0x140/0x140 [ 78.310079][ T4470] ? verify_lock_unused+0x140/0x140 [ 78.315284][ T4470] ? is_bpf_text_address+0x254/0x270 [ 78.320569][ T4470] ? __kernel_text_address+0x9a/0x100 [ 78.325950][ T4470] lock_acquire+0x19e/0x400 [ 78.330459][ T4470] ? __flush_work+0xfa/0x210 [ 78.335049][ T4470] ? __lock_acquire+0x7b50/0x7b50 [ 78.340078][ T4470] ? read_lock_is_recursive+0x10/0x10 [ 78.345454][ T4470] ? start_flush_work+0x784/0x830 [ 78.350483][ T4470] __flush_work+0x116/0x210 [ 78.354990][ T4470] ? __flush_work+0xfa/0x210 [ 78.359597][ T4470] ? flush_work+0x20/0x20 [ 78.363926][ T4470] ? try_to_grab_pending+0xfb/0x820 [ 78.369126][ T4470] ? mark_lock+0x94/0x320 [ 78.373458][ T4470] ? lockdep_hardirqs_on_prepare+0x448/0x7c0 [ 78.379446][ T4470] ? lock_chain_count+0x20/0x20 [ 78.384301][ T4470] ? mark_lock+0x94/0x320 [ 78.388630][ T4470] ? __cancel_work_timer+0x36a/0x560 [ 78.393919][ T4470] __cancel_work_timer+0x3f4/0x560 [ 78.399038][ T4470] ? cancel_work_sync+0x20/0x20 [ 78.403890][ T4470] ? __cancel_work+0x1f9/0x2e0 [ 78.408659][ T4470] ? lockdep_hardirqs_on+0x94/0x140 [ 78.413859][ T4470] ? __cancel_work+0x27b/0x2e0 [ 78.418627][ T4470] ? cancel_work+0x20/0x20 [ 78.423025][ T4470] hci_request_cancel_all+0xcc/0x300 [ 78.428287][ T4470] hci_dev_do_close+0x4e/0x1020 [ 78.433116][ T4470] ? _raw_spin_unlock_irqrestore+0xc1/0x120 [ 78.438986][ T4470] ? _raw_spin_unlock+0x40/0x40 [ 78.443810][ T4470] hci_rfkill_set_block+0x101/0x180 [ 78.448985][ T4470] ? rcu_lock_release+0x20/0x20 [ 78.453831][ T4470] rfkill_set_block+0x1c1/0x3c0 [ 78.458659][ T4470] rfkill_fop_write+0x453/0x560 [ 78.463503][ T4470] ? rfkill_fop_read+0x560/0x560 [ 78.468424][ T4470] ? common_file_perm+0xc0/0x1c0 [ 78.473334][ T4470] ? fsnotify_perm+0x5d/0x560 [ 78.477987][ T4470] ? security_file_permission+0x75/0xa0 [ 78.483511][ T4470] ? rfkill_fop_read+0x560/0x560 [ 78.488423][ T4470] vfs_write+0x304/0xd70 [ 78.492640][ T4470] ? file_end_write+0x250/0x250 [ 78.497466][ T4470] ? __context_tracking_exit+0x4c/0x80 [ 78.502902][ T4470] ? __fdget_pos+0x1e2/0x370 [ 78.507469][ T4470] ksys_write+0x153/0x260 [ 78.511778][ T4470] ? __ia32_sys_read+0x80/0x80 [ 78.516533][ T4470] ? lockdep_hardirqs_on+0x94/0x140 [ 78.521712][ T4470] do_syscall_64+0x4c/0xa0 [ 78.526105][ T4470] ? clear_bhb_loop+0x30/0x80 [ 78.530757][ T4470] ? clear_bhb_loop+0x30/0x80 [ 78.535406][ T4470] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 78.541302][ T4470] RIP: 0033:0x7f2552e280d9 [ 78.545716][ T4470] 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 [ 78.565388][ T4470] RSP: 002b:00007ffd7ae7a7e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 78.573782][ T4470] RAX: ffffffffffffffda RBX: 00007f25530affa0 RCX: 00007f2552e280d9 [ 78.581735][ T4470] RDX: 0000000000000008 RSI: 00002000000000c0 RDI: 0000000000000003 [ 78.589768][ T4470] RBP: 00007f2552ebf024 R08: 0000000000000000 R09: 0000000000000000 [ 78.597715][ T4470] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 78.605661][ T4470] R13: 00007f25530affac R14: 00007f25530affa0 R15: 00007f25530affa0 [ 78.613611][ T4470]