Warning: Permanently added '10.128.0.164' (ED25519) to the list of known hosts. 2026/01/07 19:59:32 parsed 1 programs [ 70.771511][ T4187] cgroup: Unknown subsys name 'net' [ 70.886133][ T4187] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size = 127995904 bytes [ 71.512513][ T1421] ieee802154 phy0 wpan0: encryption failed: -22 [ 71.519143][ T1421] ieee802154 phy1 wpan1: encryption failed: -22 [ 72.530715][ T4187] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k FS [ 75.870001][ T4245] chnl_net:caif_netlink_parms(): no params data found [ 75.932511][ T4245] bridge0: port 1(bridge_slave_0) entered blocking state [ 75.940668][ T4245] bridge0: port 1(bridge_slave_0) entered disabled state [ 75.950209][ T4245] device bridge_slave_0 entered promiscuous mode [ 75.960517][ T4245] bridge0: port 2(bridge_slave_1) entered blocking state [ 75.967904][ T4245] bridge0: port 2(bridge_slave_1) entered disabled state [ 75.977459][ T4245] device bridge_slave_1 entered promiscuous mode [ 76.013007][ T4245] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 76.026284][ T4245] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 76.053025][ T4245] team0: Port device team_slave_0 added [ 76.060954][ T4245] team0: Port device team_slave_1 added [ 76.080964][ T4245] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 76.087934][ T4245] 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. [ 76.115385][ T4245] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 76.128624][ T4245] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 76.137729][ T4245] 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. [ 76.165957][ T4245] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 76.299128][ T4245] device hsr_slave_0 entered promiscuous mode [ 76.309344][ T4245] device hsr_slave_1 entered promiscuous mode [ 76.439648][ T4245] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 76.450942][ T4245] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 76.460652][ T4245] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 76.470814][ T4245] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 76.497260][ T4245] bridge0: port 2(bridge_slave_1) entered blocking state [ 76.504873][ T4245] bridge0: port 2(bridge_slave_1) entered forwarding state [ 76.513042][ T4245] bridge0: port 1(bridge_slave_0) entered blocking state [ 76.520263][ T4245] bridge0: port 1(bridge_slave_0) entered forwarding state [ 76.566418][ T4245] 8021q: adding VLAN 0 to HW filter on device bond0 [ 76.582125][ T240] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 76.594963][ T240] bridge0: port 1(bridge_slave_0) entered disabled state [ 76.603922][ T240] bridge0: port 2(bridge_slave_1) entered disabled state [ 76.638327][ T4245] 8021q: adding VLAN 0 to HW filter on device team0 [ 76.650287][ T240] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 76.660780][ T240] bridge0: port 1(bridge_slave_0) entered blocking state [ 76.667865][ T240] bridge0: port 1(bridge_slave_0) entered forwarding state [ 76.683314][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 76.692297][ T9] bridge0: port 2(bridge_slave_1) entered blocking state [ 76.699544][ T9] bridge0: port 2(bridge_slave_1) entered forwarding state [ 76.742250][ T240] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 76.752849][ T240] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 76.766701][ T4267] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 76.777476][ T4267] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 76.810383][ T4267] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 76.819266][ T4267] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 76.831465][ T4267] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 76.840789][ T4267] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 76.873747][ T4245] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 77.007566][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 77.015320][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 77.030932][ T4245] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 77.070397][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 77.080766][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 77.117986][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 77.126444][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 77.135610][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 77.145288][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 77.155814][ T4245] device veth0_vlan entered promiscuous mode [ 77.184184][ T4245] device veth1_vlan entered promiscuous mode [ 77.206249][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 77.214558][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 77.224740][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 77.234126][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 77.245351][ T4245] device veth0_macvtap entered promiscuous mode [ 77.256531][ T4245] device veth1_macvtap entered promiscuous mode [ 77.295835][ T4245] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 77.304485][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 77.312872][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 77.322025][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 77.331354][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 77.344660][ T4245] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 77.353709][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 77.363585][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 77.376651][ T4245] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 77.386365][ T4245] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 77.395708][ T4245] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 77.405059][ T4245] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 77.506280][ T4245] syz-executor (4245) used greatest stack depth: 20160 bytes left [ 77.614147][ T9] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 77.640400][ T9] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 77.651198][ T4267] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 77.663977][ T4267] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 77.673655][ T4267] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 77.682911][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2026/01/07 19:59:43 executed programs: 0 [ 79.110707][ T144] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 79.132034][ T4290] chnl_net:caif_netlink_parms(): no params data found [ 79.176196][ T4290] bridge0: port 1(bridge_slave_0) entered blocking state [ 79.183674][ T4290] bridge0: port 1(bridge_slave_0) entered disabled state [ 79.193154][ T4290] device bridge_slave_0 entered promiscuous mode [ 79.204067][ T4290] bridge0: port 2(bridge_slave_1) entered blocking state [ 79.211980][ T4290] bridge0: port 2(bridge_slave_1) entered disabled state [ 79.220618][ T4290] device bridge_slave_1 entered promiscuous mode [ 79.242758][ T4290] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 79.254193][ T4290] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 79.279797][ T4290] team0: Port device team_slave_0 added [ 79.287112][ T4290] team0: Port device team_slave_1 added [ 79.306898][ T4290] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 79.314186][ T4290] 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. [ 79.340586][ T4290] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 79.345757][ T4290] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 79.358642][ T4290] 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. [ 79.384930][ T4290] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 79.415579][ T4290] device hsr_slave_0 entered promiscuous mode [ 79.422653][ T4290] device hsr_slave_1 entered promiscuous mode [ 79.429565][ T4290] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 79.437381][ T4290] Cannot create hsr debugfs directory [ 81.039877][ T23] Bluetooth: hci0: command 0x0409 tx timeout [ 81.809109][ T144] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 82.026837][ T144] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 82.161010][ T144] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 83.033878][ T4290] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 83.044758][ T4290] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 83.055028][ T4290] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 83.064616][ T4290] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 83.109438][ T1108] Bluetooth: hci0: command 0x041b tx timeout [ 83.156694][ T4290] 8021q: adding VLAN 0 to HW filter on device bond0 [ 83.171834][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 83.180604][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 83.192189][ T4290] 8021q: adding VLAN 0 to HW filter on device team0 [ 83.216036][ T240] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 83.225070][ T240] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 83.234576][ T240] bridge0: port 1(bridge_slave_0) entered blocking state [ 83.241743][ T240] bridge0: port 1(bridge_slave_0) entered forwarding state [ 83.259997][ T240] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 83.268055][ T240] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 83.277257][ T240] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 83.287801][ T240] bridge0: port 2(bridge_slave_1) entered blocking state [ 83.294966][ T240] bridge0: port 2(bridge_slave_1) entered forwarding state [ 83.304419][ T240] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 83.313362][ T240] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 83.323396][ T240] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 83.333080][ T240] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 83.345825][ T240] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 83.377099][ T240] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 83.387235][ T240] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 83.403662][ T4267] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 83.412428][ T4267] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 83.424939][ T4290] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 83.436187][ T4290] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 83.448627][ T4267] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 83.459656][ T4267] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 83.536767][ T144] device hsr_slave_0 left promiscuous mode [ 83.543760][ T144] device hsr_slave_1 left promiscuous mode [ 83.551878][ T144] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 83.561114][ T144] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 83.569573][ T144] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 83.577014][ T144] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 83.585212][ T144] device bridge_slave_1 left promiscuous mode [ 83.592766][ T144] bridge0: port 2(bridge_slave_1) entered disabled state [ 83.606354][ T144] device bridge_slave_0 left promiscuous mode [ 83.613156][ T144] bridge0: port 1(bridge_slave_0) entered disabled state [ 83.631567][ T144] device veth1_macvtap left promiscuous mode [ 83.637863][ T144] device veth0_macvtap left promiscuous mode [ 83.644957][ T144] device veth1_vlan left promiscuous mode [ 83.651375][ T144] device veth0_vlan left promiscuous mode [ 83.818883][ T144] team0 (unregistering): Port device team_slave_1 removed [ 83.832427][ T144] team0 (unregistering): Port device team_slave_0 removed [ 83.845362][ T144] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 83.866579][ T144] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 83.926117][ T144] bond0 (unregistering): Released all slaves [ 84.042717][ T4290] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 84.051682][ T240] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 84.059358][ T240] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 84.076450][ T240] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 84.085661][ T240] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 84.108346][ T240] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 84.125449][ T240] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 84.137438][ T240] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 84.145602][ T240] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 84.157136][ T4290] device veth0_vlan entered promiscuous mode [ 84.168192][ T4290] device veth1_vlan entered promiscuous mode [ 84.195433][ T4290] device veth0_macvtap entered promiscuous mode [ 84.203434][ T4267] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 84.212412][ T4267] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 84.222302][ T4267] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 84.231478][ T4267] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 84.243668][ T4267] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 84.253580][ T4290] device veth1_macvtap entered promiscuous mode [ 84.274325][ T4290] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 84.282724][ T4267] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 84.291749][ T4267] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 84.303475][ T4290] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 84.311797][ T4267] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 84.320912][ T4267] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 84.339719][ T4290] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 84.348477][ T4290] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 84.357738][ T4290] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 84.367197][ T4290] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 84.439588][ T4267] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 84.447581][ T4267] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 84.473346][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 84.489852][ T4267] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 84.498008][ T4267] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 84.521147][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 84.658457][ T4343] [ 84.660847][ T4343] ====================================================== [ 84.667905][ T4343] WARNING: possible circular locking dependency detected [ 84.674966][ T4343] syzkaller #0 Not tainted [ 84.679403][ T4343] ------------------------------------------------------ [ 84.686438][ T4343] syz.0.17/4343 is trying to acquire lock: [ 84.692274][ T4343] ffff888073608c28 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}, at: __flush_work+0xc1/0x1b0 [ 84.703383][ T4343] [ 84.703383][ T4343] but task is already holding lock: [ 84.710778][ T4343] ffffffff8d4ba7e8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x19e/0x560 [ 84.720579][ T4343] [ 84.720579][ T4343] which lock already depends on the new lock. [ 84.720579][ T4343] [ 84.731144][ T4343] [ 84.731144][ T4343] the existing dependency chain (in reverse order) is: [ 84.740279][ T4343] [ 84.740279][ T4343] -> #4 (rfkill_global_mutex){+.+.}-{3:3}: [ 84.748313][ T4343] __mutex_lock_common+0x1eb/0x2390 [ 84.754079][ T4343] mutex_lock_nested+0x17/0x20 [ 84.759398][ T4343] rfkill_register+0x33/0x8a0 [ 84.764889][ T4343] hci_register_dev+0x452/0x970 [ 84.770302][ T4343] vhci_create_device+0x32c/0x5c0 [ 84.775887][ T4343] vhci_write+0x391/0x450 [ 84.780764][ T4343] vfs_write+0x712/0xd00 [ 84.785557][ T4343] ksys_write+0x14d/0x250 [ 84.790433][ T4343] do_syscall_64+0x4c/0xa0 [ 84.795414][ T4343] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 84.801869][ T4343] [ 84.801869][ T4343] -> #3 (&data->open_mutex){+.+.}-{3:3}: [ 84.809804][ T4343] __mutex_lock_common+0x1eb/0x2390 [ 84.815551][ T4343] mutex_lock_nested+0x17/0x20 [ 84.820879][ T4343] vhci_send_frame+0x88/0x100 [ 84.826202][ T4343] hci_send_frame+0x1a9/0x2e0 [ 84.831424][ T4343] hci_tx_work+0x9f9/0x1710 [ 84.836494][ T4343] process_one_work+0x863/0x1000 [ 84.841982][ T4343] worker_thread+0xaa8/0x12a0 [ 84.847208][ T4343] kthread+0x436/0x520 [ 84.851822][ T4343] ret_from_fork+0x1f/0x30 [ 84.856798][ T4343] [ 84.856798][ T4343] -> #2 ((work_completion)(&hdev->tx_work)){+.+.}-{0:0}: [ 84.866220][ T4343] __flush_work+0xdd/0x1b0 [ 84.871202][ T4343] hci_dev_do_close+0x1e7/0x1030 [ 84.876699][ T4343] hci_unregister_dev+0x2d7/0x580 [ 84.882367][ T4343] vhci_release+0x73/0xc0 [ 84.887264][ T4343] __fput+0x234/0x930 [ 84.891795][ T4343] task_work_run+0x125/0x1a0 [ 84.896943][ T4343] do_exit+0x61e/0x20a0 [ 84.901650][ T4343] do_group_exit+0x12e/0x300 [ 84.906796][ T4343] get_signal+0x6ca/0x12c0 [ 84.911761][ T4343] arch_do_signal_or_restart+0xc1/0x1300 [ 84.917950][ T4343] exit_to_user_mode_loop+0x9e/0x130 [ 84.923802][ T4343] exit_to_user_mode_prepare+0xee/0x180 [ 84.929911][ T4343] syscall_exit_to_user_mode+0x16/0x40 [ 84.935949][ T4343] do_syscall_64+0x58/0xa0 [ 84.940928][ T4343] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 84.947378][ T4343] [ 84.947378][ T4343] -> #1 (&hdev->req_lock){+.+.}-{3:3}: [ 84.955338][ T4343] __mutex_lock_common+0x1eb/0x2390 [ 84.961109][ T4343] mutex_lock_nested+0x17/0x20 [ 84.966429][ T4343] bg_scan_update+0x44/0x3b0 [ 84.971574][ T4343] process_one_work+0x863/0x1000 [ 84.977074][ T4343] worker_thread+0xaa8/0x12a0 [ 84.982312][ T4343] kthread+0x436/0x520 [ 84.986931][ T4343] ret_from_fork+0x1f/0x30 [ 84.991900][ T4343] [ 84.991900][ T4343] -> #0 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}: [ 85.001806][ T4343] __lock_acquire+0x2c33/0x7c60 [ 85.007229][ T4343] lock_acquire+0x197/0x3f0 [ 85.012284][ T4343] __flush_work+0xdd/0x1b0 [ 85.017258][ T4343] __cancel_work_timer+0x3ac/0x520 [ 85.022929][ T4343] hci_request_cancel_all+0xcc/0x300 [ 85.028770][ T4343] hci_dev_do_close+0x4e/0x1030 [ 85.034189][ T4343] hci_rfkill_set_block+0x10a/0x190 [ 85.039947][ T4343] rfkill_set_block+0x1c6/0x420 [ 85.045362][ T4343] rfkill_fop_write+0x458/0x560 [ 85.050955][ T4343] vfs_write+0x300/0xd00 [ 85.055847][ T4343] ksys_write+0x14d/0x250 [ 85.060729][ T4343] do_syscall_64+0x4c/0xa0 [ 85.065712][ T4343] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 85.072163][ T4343] [ 85.072163][ T4343] other info that might help us debug this: [ 85.072163][ T4343] [ 85.082417][ T4343] Chain exists of: [ 85.082417][ T4343] (work_completion)(&hdev->bg_scan_update) --> &data->open_mutex --> rfkill_global_mutex [ 85.082417][ T4343] [ 85.098190][ T4343] Possible unsafe locking scenario: [ 85.098190][ T4343] [ 85.105687][ T4343] CPU0 CPU1 [ 85.111085][ T4343] ---- ---- [ 85.116482][ T4343] lock(rfkill_global_mutex); [ 85.121285][ T4343] lock(&data->open_mutex); [ 85.128432][ T4343] lock(rfkill_global_mutex); [ 85.138704][ T4343] lock((work_completion)(&hdev->bg_scan_update)); [ 85.145323][ T4343] [ 85.145323][ T4343] *** DEADLOCK *** [ 85.145323][ T4343] [ 85.153497][ T4343] 1 lock held by syz.0.17/4343: [ 85.158382][ T4343] #0: ffffffff8d4ba7e8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x19e/0x560 [ 85.168524][ T4343] [ 85.168524][ T4343] stack backtrace: [ 85.174452][ T4343] CPU: 1 PID: 4343 Comm: syz.0.17 Not tainted syzkaller #0 [ 85.181685][ T4343] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 [ 85.190276][ T4305] Bluetooth: hci0: command 0x040f tx timeout [ 85.191898][ T4343] Call Trace: [ 85.201286][ T4343] [ 85.204248][ T4343] dump_stack_lvl+0x168/0x230 [ 85.208962][ T4343] ? load_image+0x3b0/0x3b0 [ 85.213494][ T4343] ? show_regs_print_info+0x20/0x20 [ 85.218730][ T4343] ? print_circular_bug+0x12b/0x1a0 [ 85.223967][ T4343] check_noncircular+0x274/0x310 [ 85.228941][ T4343] ? add_chain_block+0x940/0x940 [ 85.234426][ T4343] ? lockdep_lock+0xdc/0x1e0 [ 85.239055][ T4343] ? __lock_acquire+0x12d9/0x7c60 [ 85.244199][ T4343] ? lockdep_lock+0x1e0/0x1e0 [ 85.248905][ T4343] ? mark_lock+0x94/0x320 [ 85.253274][ T4343] __lock_acquire+0x2c33/0x7c60 [ 85.258191][ T4343] ? verify_lock_unused+0x140/0x140 [ 85.263422][ T4343] ? verify_lock_unused+0x140/0x140 [ 85.268661][ T4343] lock_acquire+0x197/0x3f0 [ 85.273198][ T4343] ? __flush_work+0xc1/0x1b0 [ 85.277828][ T4343] ? __lock_acquire+0x7c60/0x7c60 [ 85.282918][ T4343] ? read_lock_is_recursive+0x10/0x10 [ 85.288337][ T4343] ? start_flush_work+0x776/0x820 [ 85.293392][ T4343] ? _raw_spin_unlock_irqrestore+0xaa/0x100 [ 85.299317][ T4343] ? _raw_spin_unlock+0x40/0x40 [ 85.304207][ T4343] __flush_work+0xdd/0x1b0 [ 85.308661][ T4343] ? __flush_work+0xc1/0x1b0 [ 85.313287][ T4343] ? flush_work+0x20/0x20 [ 85.317646][ T4343] ? try_to_grab_pending+0xf3/0x7e0 [ 85.322877][ T4343] ? lockdep_hardirqs_off+0x70/0x100 [ 85.328358][ T4343] ? mark_lock+0x94/0x320 [ 85.332717][ T4343] ? lockdep_hardirqs_on_prepare+0x3fc/0x760 [ 85.338746][ T4343] ? lock_chain_count+0x20/0x20 [ 85.343625][ T4343] ? mark_lock+0x94/0x320 [ 85.347985][ T4343] ? __cancel_work_timer+0x331/0x520 [ 85.353387][ T4343] __cancel_work_timer+0x3ac/0x520 [ 85.358554][ T4343] ? cancel_work_sync+0x20/0x20 [ 85.363433][ T4343] ? __cancel_work+0x1f4/0x2d0 [ 85.368315][ T4343] ? lockdep_hardirqs_on+0x94/0x140 [ 85.373638][ T4343] ? __cancel_work+0x26f/0x2d0 [ 85.378439][ T4343] ? cancel_work+0x20/0x20 [ 85.382885][ T4343] ? lock_chain_count+0x20/0x20 [ 85.387784][ T4343] hci_request_cancel_all+0xcc/0x300 [ 85.393104][ T4343] hci_dev_do_close+0x4e/0x1030 [ 85.397985][ T4343] ? _raw_spin_unlock_irqrestore+0xaa/0x100 [ 85.403937][ T4343] ? _raw_spin_unlock+0x40/0x40 [ 85.408815][ T4343] hci_rfkill_set_block+0x10a/0x190 [ 85.414121][ T4343] ? rcu_lock_release+0x20/0x20 [ 85.419000][ T4343] rfkill_set_block+0x1c6/0x420 [ 85.423902][ T4343] rfkill_fop_write+0x458/0x560 [ 85.428782][ T4343] ? verify_lock_unused+0x140/0x140 [ 85.434021][ T4343] ? rfkill_fop_read+0x4b0/0x4b0 [ 85.438991][ T4343] ? common_file_perm+0xc0/0x1c0 [ 85.443961][ T4343] ? fsnotify_perm+0x5d/0x560 [ 85.448685][ T4343] ? security_file_permission+0x75/0xa0 [ 85.454272][ T4343] ? rfkill_fop_read+0x4b0/0x4b0 [ 85.459252][ T4343] vfs_write+0x300/0xd00 [ 85.463537][ T4343] ? file_end_write+0x250/0x250 [ 85.468424][ T4343] ? __context_tracking_exit+0x4c/0x80 [ 85.473921][ T4343] ? __lock_acquire+0x7c60/0x7c60 [ 85.478979][ T4343] ? __fdget_pos+0x1e2/0x370 [ 85.483660][ T4343] ksys_write+0x14d/0x250 [ 85.488032][ T4343] ? __ia32_sys_read+0x80/0x80 [ 85.492846][ T4343] ? lockdep_hardirqs_on+0x94/0x140 [ 85.498084][ T4343] do_syscall_64+0x4c/0xa0 [ 85.502531][ T4343] ? clear_bhb_loop+0x30/0x80 [ 85.507330][ T4343] ? clear_bhb_loop+0x30/0x80 [ 85.512047][ T4343] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 85.517989][ T4343] RIP: 0033:0x7fee6b261749 [ 85.522444][ T4343] Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48 [ 85.542088][ T4343] RSP: 002b:00007ffe08f3a738 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 85.550554][ T4343] RAX: ffffffffffffffda RBX: 00007fee6b4b7fa0 RCX: 00007fee6b261749 [ 85.558561][ T4343] RDX: 0000000000000008 RSI: 0000200000000100 RDI: 0000000000000003 [ 85.566566][ T4343] RBP: 00007fee6b2e5f91 R08: 0000000000000000 R09: 0000000000000000 [ 85.574565][ T4343] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 85.582560][ T4343] R13: 00007fee6b4b7fa0 R14: 00007fee6b4b7fa0 R15: 0000000000000003 [ 85.590669][ T4343]