Warning: Permanently added '10.128.1.186' (ED25519) to the list of known hosts. 2026/04/04 03:01:30 parsed 1 programs [ 66.489748][ T4188] cgroup: Unknown subsys name 'net' [ 66.622294][ T4188] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size = 127995904 bytes [ 68.128696][ T4188] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k FS [ 70.082990][ T4209] chnl_net:caif_netlink_parms(): no params data found [ 70.129063][ T4209] bridge0: port 1(bridge_slave_0) entered blocking state [ 70.137198][ T4209] bridge0: port 1(bridge_slave_0) entered disabled state [ 70.145338][ T4209] device bridge_slave_0 entered promiscuous mode [ 70.154691][ T4209] bridge0: port 2(bridge_slave_1) entered blocking state [ 70.162234][ T4209] bridge0: port 2(bridge_slave_1) entered disabled state [ 70.170463][ T4209] device bridge_slave_1 entered promiscuous mode [ 70.194688][ T4209] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 70.206031][ T4209] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 70.228584][ T4209] team0: Port device team_slave_0 added [ 70.247411][ T4209] team0: Port device team_slave_1 added [ 70.269459][ T4209] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 70.276588][ T4209] 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. [ 70.303312][ T4209] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 70.317656][ T4209] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 70.324711][ T4209] 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. [ 70.351997][ T4209] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 70.391979][ T4209] device hsr_slave_0 entered promiscuous mode [ 70.399814][ T4209] device hsr_slave_1 entered promiscuous mode [ 70.540341][ T4209] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 70.554319][ T4209] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 70.565814][ T4209] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 70.577535][ T4209] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 70.610657][ T4209] bridge0: port 2(bridge_slave_1) entered blocking state [ 70.618109][ T4209] bridge0: port 2(bridge_slave_1) entered forwarding state [ 70.626368][ T4209] bridge0: port 1(bridge_slave_0) entered blocking state [ 70.633985][ T4209] bridge0: port 1(bridge_slave_0) entered forwarding state [ 70.705733][ T4209] 8021q: adding VLAN 0 to HW filter on device bond0 [ 70.726187][ T893] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 70.739064][ T893] bridge0: port 1(bridge_slave_0) entered disabled state [ 70.748095][ T893] bridge0: port 2(bridge_slave_1) entered disabled state [ 70.756826][ T893] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 70.774080][ T4209] 8021q: adding VLAN 0 to HW filter on device team0 [ 70.786794][ T893] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 70.796154][ T893] bridge0: port 1(bridge_slave_0) entered blocking state [ 70.803302][ T893] bridge0: port 1(bridge_slave_0) entered forwarding state [ 70.823993][ T893] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 70.832864][ T893] bridge0: port 2(bridge_slave_1) entered blocking state [ 70.840389][ T893] bridge0: port 2(bridge_slave_1) entered forwarding state [ 70.856316][ T893] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 70.866175][ T893] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 70.898806][ T4209] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 70.909449][ T4209] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 70.923444][ T893] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 70.934388][ T893] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 70.944268][ T893] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 70.955626][ T893] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 71.111240][ T3091] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 71.120523][ T3091] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 71.133159][ T4209] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 71.177623][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 71.189444][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 71.202689][ T4209] device veth0_vlan entered promiscuous mode [ 71.212904][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 71.224047][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 71.241315][ T4209] device veth1_vlan entered promiscuous mode [ 71.257861][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 71.276850][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 71.284557][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 71.293757][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 71.316005][ T4209] device veth0_macvtap entered promiscuous mode [ 71.326185][ T3091] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 71.336893][ T3091] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 71.345891][ T3091] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 71.359595][ T4209] device veth1_macvtap entered promiscuous mode [ 71.379940][ T4209] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 71.392415][ T4209] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 71.405306][ T4209] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 71.416575][ T4209] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 71.425433][ T4209] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 71.436859][ T4209] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 71.448683][ T3091] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 71.457211][ T3091] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 71.465783][ T3091] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 71.475069][ T3091] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 71.480582][ T1431] ieee802154 phy0 wpan0: encryption failed: -22 [ 71.484854][ T3091] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 71.490605][ T1431] ieee802154 phy1 wpan1: encryption failed: -22 [ 71.615484][ T4209] syz-executor (4209) used greatest stack depth: 20272 bytes left [ 71.712398][ T154] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 74.392725][ T154] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 76.611770][ T154] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 76.674787][ T154] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 77.071288][ T3091] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 77.090901][ T3091] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 77.121050][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 77.145401][ T3091] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 77.154344][ T3091] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 77.179337][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 77.685707][ T154] device hsr_slave_0 left promiscuous mode [ 77.694696][ T154] device hsr_slave_1 left promiscuous mode [ 77.701928][ T154] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 77.709881][ T154] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 77.718777][ T154] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 77.726385][ T154] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 77.734888][ T154] device bridge_slave_1 left promiscuous mode [ 77.741955][ T154] bridge0: port 2(bridge_slave_1) entered disabled state [ 77.754409][ T154] device bridge_slave_0 left promiscuous mode [ 77.761918][ T154] bridge0: port 1(bridge_slave_0) entered disabled state [ 77.778143][ T154] device veth1_macvtap left promiscuous mode [ 77.784638][ T154] device veth0_macvtap left promiscuous mode [ 77.791905][ T154] device veth1_vlan left promiscuous mode [ 77.797943][ T154] device veth0_vlan left promiscuous mode [ 77.939294][ T154] team0 (unregistering): Port device team_slave_1 removed [ 77.953228][ T154] team0 (unregistering): Port device team_slave_0 removed [ 77.965942][ T154] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 77.981971][ T154] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 78.033506][ T154] bond0 (unregistering): Released all slaves 2026/04/04 03:01:45 executed programs: 0 [ 80.013187][ T4353] chnl_net:caif_netlink_parms(): no params data found [ 80.138361][ T4353] bridge0: port 1(bridge_slave_0) entered blocking state [ 80.145639][ T4353] bridge0: port 1(bridge_slave_0) entered disabled state [ 80.154782][ T4353] device bridge_slave_0 entered promiscuous mode [ 80.165275][ T4353] bridge0: port 2(bridge_slave_1) entered blocking state [ 80.173146][ T4353] bridge0: port 2(bridge_slave_1) entered disabled state [ 80.189777][ T4353] device bridge_slave_1 entered promiscuous mode [ 80.227708][ T4353] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 80.250492][ T4353] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 80.283205][ T4353] team0: Port device team_slave_0 added [ 80.291232][ T4353] team0: Port device team_slave_1 added [ 80.313696][ T4353] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 80.320831][ T4353] 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. [ 80.352089][ T4353] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 80.375139][ T4353] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 80.393513][ T4353] 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. [ 80.450174][ T4353] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 80.520191][ T4353] device hsr_slave_0 entered promiscuous mode [ 80.528658][ T4353] device hsr_slave_1 entered promiscuous mode [ 80.715450][ T154] ODEBUG: Out of memory. ODEBUG disabled [ 81.253195][ T4353] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 81.263343][ T4353] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 81.273445][ T4353] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 81.283387][ T4353] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 81.350813][ T4353] 8021q: adding VLAN 0 to HW filter on device bond0 [ 81.366213][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 81.374642][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 81.386008][ T4353] 8021q: adding VLAN 0 to HW filter on device team0 [ 81.396993][ T893] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 81.407444][ T893] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 81.416103][ T893] bridge0: port 1(bridge_slave_0) entered blocking state [ 81.423514][ T893] bridge0: port 1(bridge_slave_0) entered forwarding state [ 81.447767][ T893] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 81.456249][ T893] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 81.466357][ T893] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 81.476124][ T893] bridge0: port 2(bridge_slave_1) entered blocking state [ 81.483364][ T893] bridge0: port 2(bridge_slave_1) entered forwarding state [ 81.493098][ T893] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 81.502919][ T893] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 81.513567][ T893] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 81.523945][ T893] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 81.534588][ T893] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 81.544583][ T893] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 81.556032][ T893] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 81.569911][ T3091] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 81.579104][ T3091] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 81.623474][ T4353] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 81.635251][ T4353] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 81.644133][ T3091] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 81.656513][ T3091] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 81.829598][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 81.837683][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 81.867529][ T4404] Bluetooth: hci0: command 0x0409 tx timeout [ 81.880839][ T4353] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 81.904691][ T3091] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 81.917605][ T3091] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 81.972411][ T4353] device veth0_vlan entered promiscuous mode [ 81.981372][ T3091] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 81.991516][ T3091] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 82.044629][ T4353] device veth1_vlan entered promiscuous mode [ 82.051891][ T3091] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 82.061854][ T3091] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 82.071449][ T3091] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 82.129721][ T3091] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 82.140359][ T3091] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 82.149368][ T3091] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 82.161883][ T4353] device veth0_macvtap entered promiscuous mode [ 82.172228][ T3091] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 82.183198][ T4353] device veth1_macvtap entered promiscuous mode [ 82.233966][ T4353] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 82.242911][ T3091] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 82.253215][ T3091] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 82.266290][ T4353] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 82.277598][ T4353] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 82.287644][ T4353] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 82.296660][ T4353] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 82.305397][ T4353] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 82.316580][ T3091] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 82.328110][ T3091] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 82.425380][ T144] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 82.442526][ T144] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 82.462422][ T3091] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 82.482269][ T3091] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 82.493154][ T3091] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 82.502040][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 82.638401][ T4465] [ 82.640781][ T4465] ====================================================== [ 82.647826][ T4465] WARNING: possible circular locking dependency detected [ 82.654943][ T4465] syzkaller #0 Not tainted [ 82.659374][ T4465] ------------------------------------------------------ [ 82.666404][ T4465] syz.0.17/4465 is trying to acquire lock: [ 82.672319][ T4465] ffff888077cf4c28 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}, at: __flush_work+0xfa/0x210 [ 82.683493][ T4465] [ 82.683493][ T4465] but task is already holding lock: [ 82.690957][ T4465] ffffffff8d6c51a8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x18b/0x560 [ 82.700657][ T4465] [ 82.700657][ T4465] which lock already depends on the new lock. [ 82.700657][ T4465] [ 82.711734][ T4465] [ 82.711734][ T4465] the existing dependency chain (in reverse order) is: [ 82.720956][ T4465] [ 82.720956][ T4465] -> #4 (rfkill_global_mutex){+.+.}-{3:3}: [ 82.729016][ T4465] __mutex_lock_common+0x1e3/0x2400 [ 82.734884][ T4465] mutex_lock_nested+0x17/0x20 [ 82.740304][ T4465] rfkill_register+0x33/0x8a0 [ 82.745536][ T4465] hci_register_dev+0x452/0x970 [ 82.750939][ T4465] vhci_create_device+0x32c/0x5c0 [ 82.756519][ T4465] vhci_write+0x391/0x450 [ 82.761536][ T4465] vfs_write+0x745/0xd60 [ 82.766376][ T4465] ksys_write+0x152/0x260 [ 82.771254][ T4465] do_syscall_64+0x4c/0xa0 [ 82.776396][ T4465] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 82.783085][ T4465] [ 82.783085][ T4465] -> #3 (&data->open_mutex){+.+.}-{3:3}: [ 82.790946][ T4465] __mutex_lock_common+0x1e3/0x2400 [ 82.796764][ T4465] mutex_lock_nested+0x17/0x20 [ 82.802177][ T4465] vhci_send_frame+0x88/0x100 [ 82.807644][ T4465] hci_send_frame+0x1a9/0x2e0 [ 82.812881][ T4465] hci_tx_work+0x9f9/0x1710 [ 82.817925][ T4465] process_one_work+0x85f/0x1010 [ 82.823427][ T4465] worker_thread+0xaa6/0x1290 [ 82.828737][ T4465] kthread+0x436/0x520 [ 82.833350][ T4465] ret_from_fork+0x1f/0x30 [ 82.838318][ T4465] [ 82.838318][ T4465] -> #2 ((work_completion)(&hdev->tx_work)){+.+.}-{0:0}: [ 82.847545][ T4465] __flush_work+0x116/0x210 [ 82.852599][ T4465] hci_dev_do_close+0x1e7/0x1030 [ 82.858084][ T4465] hci_unregister_dev+0x2d7/0x580 [ 82.863748][ T4465] vhci_release+0x73/0xc0 [ 82.868738][ T4465] __fput+0x234/0x930 [ 82.873315][ T4465] task_work_run+0x125/0x1a0 [ 82.878455][ T4465] do_exit+0x626/0x20c0 [ 82.883432][ T4465] do_group_exit+0x12e/0x300 [ 82.888656][ T4465] get_signal+0x6ca/0x12c0 [ 82.893618][ T4465] arch_do_signal_or_restart+0xe7/0x12c0 [ 82.899798][ T4465] exit_to_user_mode_loop+0x9e/0x130 [ 82.905732][ T4465] exit_to_user_mode_prepare+0xee/0x180 [ 82.911910][ T4465] syscall_exit_to_user_mode+0x16/0x40 [ 82.917930][ T4465] do_syscall_64+0x58/0xa0 [ 82.922989][ T4465] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 82.929648][ T4465] [ 82.929648][ T4465] -> #1 (&hdev->req_lock){+.+.}-{3:3}: [ 82.937351][ T4465] __mutex_lock_common+0x1e3/0x2400 [ 82.943190][ T4465] mutex_lock_nested+0x17/0x20 [ 82.948513][ T4465] bg_scan_update+0x44/0x3b0 [ 82.953738][ T4465] process_one_work+0x85f/0x1010 [ 82.959251][ T4465] worker_thread+0xaa6/0x1290 [ 82.964476][ T4465] kthread+0x436/0x520 [ 82.969176][ T4465] ret_from_fork+0x1f/0x30 [ 82.974262][ T4465] [ 82.974262][ T4465] -> #0 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}: [ 82.984278][ T4465] __lock_acquire+0x2c42/0x7d10 [ 82.989684][ T4465] lock_acquire+0x19e/0x400 [ 82.994738][ T4465] __flush_work+0x116/0x210 [ 82.999869][ T4465] __cancel_work_timer+0x3f4/0x560 [ 83.005535][ T4465] hci_request_cancel_all+0xcc/0x300 [ 83.011631][ T4465] hci_dev_do_close+0x4e/0x1030 [ 83.017041][ T4465] hci_rfkill_set_block+0x10a/0x190 [ 83.022819][ T4465] rfkill_set_block+0x1c6/0x420 [ 83.028223][ T4465] rfkill_fop_write+0x452/0x560 [ 83.033717][ T4465] vfs_write+0x30b/0xd60 [ 83.038590][ T4465] ksys_write+0x152/0x260 [ 83.043905][ T4465] do_syscall_64+0x4c/0xa0 [ 83.049066][ T4465] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 83.055879][ T4465] [ 83.055879][ T4465] other info that might help us debug this: [ 83.055879][ T4465] [ 83.066307][ T4465] Chain exists of: [ 83.066307][ T4465] (work_completion)(&hdev->bg_scan_update) --> &data->open_mutex --> rfkill_global_mutex [ 83.066307][ T4465] [ 83.082449][ T4465] Possible unsafe locking scenario: [ 83.082449][ T4465] [ 83.090365][ T4465] CPU0 CPU1 [ 83.095793][ T4465] ---- ---- [ 83.101179][ T4465] lock(rfkill_global_mutex); [ 83.106180][ T4465] lock(&data->open_mutex); [ 83.113328][ T4465] lock(rfkill_global_mutex); [ 83.120910][ T4465] lock((work_completion)(&hdev->bg_scan_update)); [ 83.127525][ T4465] [ 83.127525][ T4465] *** DEADLOCK *** [ 83.127525][ T4465] [ 83.135864][ T4465] 1 lock held by syz.0.17/4465: [ 83.140735][ T4465] #0: ffffffff8d6c51a8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x18b/0x560 [ 83.150998][ T4465] [ 83.150998][ T4465] stack backtrace: [ 83.157100][ T4465] CPU: 1 PID: 4465 Comm: syz.0.17 Not tainted syzkaller #0 [ 83.164509][ T4465] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026 [ 83.175362][ T4465] Call Trace: [ 83.178731][ T4465] [ 83.181838][ T4465] dump_stack_lvl+0x188/0x250 [ 83.186913][ T4465] ? load_image+0x400/0x400 [ 83.191497][ T4465] ? show_regs_print_info+0x20/0x20 [ 83.196702][ T4465] ? print_circular_bug+0x12b/0x1a0 [ 83.201911][ T4465] check_noncircular+0x296/0x330 [ 83.207080][ T4465] ? look_up_lock_class+0x71/0x110 [ 83.212321][ T4465] ? add_chain_block+0x940/0x940 [ 83.217274][ T4465] ? lockdep_lock+0xf1/0x1f0 [ 83.221877][ T4465] ? __lock_acquire+0x12e8/0x7d10 [ 83.226907][ T4465] ? mark_lock+0x94/0x320 [ 83.231333][ T4465] __lock_acquire+0x2c42/0x7d10 [ 83.236449][ T4465] ? rcu_lock_release+0x5/0x20 [ 83.241222][ T4465] ? verify_lock_unused+0x140/0x140 [ 83.246964][ T4465] lock_acquire+0x19e/0x400 [ 83.251467][ T4465] ? __flush_work+0xfa/0x210 [ 83.256056][ T4465] ? __lock_acquire+0x7d10/0x7d10 [ 83.261258][ T4465] ? read_lock_is_recursive+0x10/0x10 [ 83.266865][ T4465] ? start_flush_work+0x776/0x820 [ 83.271978][ T4465] __flush_work+0x116/0x210 [ 83.276481][ T4465] ? __flush_work+0xfa/0x210 [ 83.281156][ T4465] ? flush_work+0x20/0x20 [ 83.285565][ T4465] ? try_to_grab_pending+0xfa/0x7f0 [ 83.290846][ T4465] ? mark_lock+0x94/0x320 [ 83.295444][ T4465] ? lockdep_hardirqs_on_prepare+0x409/0x770 [ 83.301806][ T4465] ? lock_chain_count+0x20/0x20 [ 83.306806][ T4465] ? mark_lock+0x94/0x320 [ 83.311134][ T4465] ? __cancel_work_timer+0x36a/0x560 [ 83.316422][ T4465] __cancel_work_timer+0x3f4/0x560 [ 83.321535][ T4465] ? cancel_work_sync+0x20/0x20 [ 83.326470][ T4465] ? __cancel_work+0x1f9/0x2e0 [ 83.331409][ T4465] ? lockdep_hardirqs_on+0x94/0x140 [ 83.336780][ T4465] ? __cancel_work+0x27b/0x2e0 [ 83.341802][ T4465] ? cancel_work+0x20/0x20 [ 83.346211][ T4465] ? lock_chain_count+0x20/0x20 [ 83.351345][ T4465] hci_request_cancel_all+0xcc/0x300 [ 83.356725][ T4465] hci_dev_do_close+0x4e/0x1030 [ 83.361692][ T4465] ? _raw_spin_unlock_irqrestore+0xc1/0x120 [ 83.367939][ T4465] ? _raw_spin_unlock+0x40/0x40 [ 83.372788][ T4465] ? mutex_is_locked+0xe/0x40 [ 83.377478][ T4465] hci_rfkill_set_block+0x10a/0x190 [ 83.383059][ T4465] ? rcu_lock_release+0x20/0x20 [ 83.387913][ T4465] rfkill_set_block+0x1c6/0x420 [ 83.393116][ T4465] rfkill_fop_write+0x452/0x560 [ 83.397967][ T4465] ? rfkill_fop_read+0x4d0/0x4d0 [ 83.402908][ T4465] ? common_file_perm+0x110/0x1c0 [ 83.408049][ T4465] ? fsnotify_perm+0x5d/0x560 [ 83.412810][ T4465] ? security_file_permission+0x75/0xa0 [ 83.418352][ T4465] ? rfkill_fop_read+0x4d0/0x4d0 [ 83.423641][ T4465] vfs_write+0x30b/0xd60 [ 83.428059][ T4465] ? file_end_write+0x250/0x250 [ 83.433085][ T4465] ? __context_tracking_exit+0x4c/0x80 [ 83.438661][ T4465] ? __lock_acquire+0x7d10/0x7d10 [ 83.444043][ T4465] ? __fdget_pos+0x1e2/0x370 [ 83.448809][ T4465] ksys_write+0x152/0x260 [ 83.453145][ T4465] ? __ia32_sys_read+0x80/0x80 [ 83.458085][ T4465] ? lockdep_hardirqs_on+0x94/0x140 [ 83.463546][ T4465] do_syscall_64+0x4c/0xa0 [ 83.468058][ T4465] ? clear_bhb_loop+0x30/0x80 [ 83.472759][ T4465] ? clear_bhb_loop+0x30/0x80 [ 83.477477][ T4465] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 83.483487][ T4465] RIP: 0033:0x7feb291e3819 [ 83.488519][ T4465] 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 [ 83.508432][ T4465] RSP: 002b:00007ffd83ca5f68 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 83.516865][ T4465] RAX: ffffffffffffffda RBX: 00007feb2945cfa0 RCX: 00007feb291e3819 [ 83.524851][ T4465] RDX: 0000000000000008 RSI: 00002000000000c0 RDI: 0000000000000003 [ 83.533044][ T4465] RBP: 00007feb29279c91 R08: 0000000000000000 R09: 0000000000000000 [ 83.541205][ T4465] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 83.549203][ T4465] R13: 00007feb2945cfac R14: 00007feb2945cfa0 R15: 00007feb2945cfa0 [ 83.557363][ T4465]