Warning: Permanently added '10.128.0.62' (ED25519) to the list of known hosts. 2026/05/26 03:56:42 parsed 1 programs [ 62.888320][ T4200] cgroup: Unknown subsys name 'net' [ 63.056001][ T4200] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size = 127995904 bytes [ 64.358793][ T4200] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k FS [ 65.807489][ T4214] syz-executor (4214) used greatest stack depth: 20760 bytes left [ 66.439360][ T4243] chnl_net:caif_netlink_parms(): no params data found [ 66.504070][ T4243] bridge0: port 1(bridge_slave_0) entered blocking state [ 66.513245][ T4243] bridge0: port 1(bridge_slave_0) entered disabled state [ 66.521786][ T4243] device bridge_slave_0 entered promiscuous mode [ 66.532047][ T4243] bridge0: port 2(bridge_slave_1) entered blocking state [ 66.539538][ T4243] bridge0: port 2(bridge_slave_1) entered disabled state [ 66.549130][ T4243] device bridge_slave_1 entered promiscuous mode [ 66.575374][ T4243] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 66.587361][ T4243] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 66.617175][ T4243] team0: Port device team_slave_0 added [ 66.624906][ T4243] team0: Port device team_slave_1 added [ 66.647462][ T4243] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 66.655900][ T4243] 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. [ 66.684494][ T4243] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 66.697682][ T4243] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 66.706013][ T4243] 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. [ 66.734825][ T4243] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 66.775498][ T4243] device hsr_slave_0 entered promiscuous mode [ 66.783759][ T4243] device hsr_slave_1 entered promiscuous mode [ 66.918778][ T4243] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 66.932320][ T4243] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 66.943459][ T4243] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 66.953586][ T4243] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 67.036645][ T4243] 8021q: adding VLAN 0 to HW filter on device bond0 [ 67.054166][ T1279] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 67.066321][ T1279] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 67.078349][ T4243] 8021q: adding VLAN 0 to HW filter on device team0 [ 67.091187][ T1279] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 67.102101][ T1279] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 67.111660][ T1279] bridge0: port 1(bridge_slave_0) entered blocking state [ 67.118836][ T1279] bridge0: port 1(bridge_slave_0) entered forwarding state [ 67.128230][ T1279] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 67.141389][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 67.151768][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 67.162135][ T9] bridge0: port 2(bridge_slave_1) entered blocking state [ 67.169216][ T9] bridge0: port 2(bridge_slave_1) entered forwarding state [ 67.192182][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 67.204329][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 67.213405][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 67.223580][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 67.232620][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 67.241927][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 67.251489][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 67.262671][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 67.278304][ T4243] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 67.292335][ T4243] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 67.302092][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 67.407338][ T1279] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 67.414904][ T1279] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 67.427050][ T4243] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 67.444614][ T1279] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 67.463400][ T145] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 67.472409][ T145] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 67.480274][ T145] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 67.489746][ T4243] device veth0_vlan entered promiscuous mode [ 67.504091][ T4243] device veth1_vlan entered promiscuous mode [ 67.512015][ T145] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 67.563064][ T145] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 67.576397][ T145] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 67.587975][ T4243] device veth0_macvtap entered promiscuous mode [ 67.603858][ T4243] device veth1_macvtap entered promiscuous mode [ 67.630123][ T4243] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 67.639443][ T145] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 67.649296][ T145] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 67.663523][ T145] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 67.676409][ T4243] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 67.684575][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 67.693705][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 67.705229][ T4243] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 67.715108][ T4243] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 67.723999][ T4243] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 67.733498][ T4243] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 67.814008][ T4243] syz-executor (4243) used greatest stack depth: 20496 bytes left [ 68.600809][ T144] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 68.610308][ T144] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 68.622263][ T145] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 68.652560][ T145] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 68.661209][ T145] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 68.670009][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2026/05/26 03:56:50 executed programs: 0 [ 69.750147][ T4294] chnl_net:caif_netlink_parms(): no params data found [ 69.796989][ T4294] bridge0: port 1(bridge_slave_0) entered blocking state [ 69.805405][ T4294] bridge0: port 1(bridge_slave_0) entered disabled state [ 69.815942][ T4294] device bridge_slave_0 entered promiscuous mode [ 69.826293][ T4294] bridge0: port 2(bridge_slave_1) entered blocking state [ 69.835998][ T4294] bridge0: port 2(bridge_slave_1) entered disabled state [ 69.845774][ T4294] device bridge_slave_1 entered promiscuous mode [ 69.873522][ T4294] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 69.884903][ T4294] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 69.910695][ T4294] team0: Port device team_slave_0 added [ 69.918266][ T4294] team0: Port device team_slave_1 added [ 69.933651][ T4294] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 69.941278][ T4294] 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. [ 69.968027][ T4294] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 69.982115][ T4294] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 69.989635][ T4294] 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. [ 70.016192][ T4294] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 70.054338][ T1279] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 70.071643][ T4294] device hsr_slave_0 entered promiscuous mode [ 70.079158][ T4294] device hsr_slave_1 entered promiscuous mode [ 70.086707][ T4294] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 70.094719][ T4294] Cannot create hsr debugfs directory [ 71.442919][ T1432] ieee802154 phy0 wpan0: encryption failed: -22 [ 71.449748][ T1432] ieee802154 phy1 wpan1: encryption failed: -22 [ 71.681336][ T4259] Bluetooth: hci0: command 0x0409 tx timeout [ 73.356545][ T1279] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 73.414642][ T1279] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 73.467155][ T1279] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 73.761051][ T4258] Bluetooth: hci0: command 0x041b tx timeout [ 74.290314][ T4294] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 74.299703][ T4294] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 74.309542][ T4294] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 74.319167][ T4294] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 74.382204][ T4294] 8021q: adding VLAN 0 to HW filter on device bond0 [ 74.411345][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 74.419417][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 74.431454][ T4294] 8021q: adding VLAN 0 to HW filter on device team0 [ 74.453705][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 74.463349][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 74.473311][ T155] bridge0: port 1(bridge_slave_0) entered blocking state [ 74.480752][ T155] bridge0: port 1(bridge_slave_0) entered forwarding state [ 74.489652][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 74.499256][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 74.508641][ T155] bridge0: port 2(bridge_slave_1) entered blocking state [ 74.516088][ T155] bridge0: port 2(bridge_slave_1) entered forwarding state [ 74.524165][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 74.533852][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 74.560635][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 74.574577][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 74.586111][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 74.595769][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 74.627773][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 74.638216][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 74.654476][ T145] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 74.665305][ T145] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 74.699588][ T145] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 74.708907][ T145] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 74.721266][ T4294] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 74.812193][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 74.819668][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 74.847917][ T4294] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 74.884985][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 74.894672][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 74.912357][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 74.921154][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 74.929514][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 74.938068][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 74.948583][ T4294] device veth0_vlan entered promiscuous mode [ 74.963359][ T4294] device veth1_vlan entered promiscuous mode [ 75.006413][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 75.015290][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 75.024482][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 75.033853][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 75.045620][ T4294] device veth0_macvtap entered promiscuous mode [ 75.059198][ T4294] device veth1_macvtap entered promiscuous mode [ 75.078384][ T1279] device hsr_slave_0 left promiscuous mode [ 75.088478][ T1279] device hsr_slave_1 left promiscuous mode [ 75.097120][ T1279] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 75.105348][ T1279] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 75.116261][ T1279] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 75.124982][ T1279] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 75.133947][ T1279] device bridge_slave_1 left promiscuous mode [ 75.142041][ T1279] bridge0: port 2(bridge_slave_1) entered disabled state [ 75.156612][ T1279] device bridge_slave_0 left promiscuous mode [ 75.165199][ T1279] bridge0: port 1(bridge_slave_0) entered disabled state [ 75.182525][ T1279] device veth1_macvtap left promiscuous mode [ 75.189030][ T1279] device veth0_macvtap left promiscuous mode [ 75.196115][ T1279] device veth1_vlan left promiscuous mode [ 75.203078][ T1279] device veth0_vlan left promiscuous mode [ 75.346852][ T1279] team0 (unregistering): Port device team_slave_1 removed [ 75.363643][ T1279] team0 (unregistering): Port device team_slave_0 removed [ 75.378614][ T1279] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 75.394702][ T1279] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 75.449323][ T1279] bond0 (unregistering): Released all slaves [ 75.538718][ T4294] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 75.551421][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 75.559579][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 75.567978][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 75.577545][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 75.588891][ T4294] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 75.597553][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 75.607613][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 75.621424][ T4294] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 75.631875][ T4294] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 75.641360][ T4294] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 75.651439][ T4294] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 75.721005][ T155] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 75.729060][ T155] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 75.737339][ T145] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 75.776025][ T155] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 75.784345][ T155] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 75.793671][ T145] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 75.848527][ T4260] Bluetooth: hci0: command 0x040f tx timeout [ 75.904790][ T4353] [ 75.907232][ T4353] ====================================================== [ 75.914234][ T4353] WARNING: possible circular locking dependency detected [ 75.921250][ T4353] syzkaller #0 Not tainted [ 75.925735][ T4353] ------------------------------------------------------ [ 75.932729][ T4353] syz.0.17/4353 is trying to acquire lock: [ 75.938882][ T4353] ffff888077d6cc28 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}, at: __flush_work+0xfa/0x210 [ 75.950035][ T4353] [ 75.950035][ T4353] but task is already holding lock: [ 75.957871][ T4353] ffffffff8d6c65a8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x18b/0x560 [ 75.967924][ T4353] [ 75.967924][ T4353] which lock already depends on the new lock. [ 75.967924][ T4353] [ 75.978400][ T4353] [ 75.978400][ T4353] the existing dependency chain (in reverse order) is: [ 75.987748][ T4353] [ 75.987748][ T4353] -> #4 (rfkill_global_mutex){+.+.}-{3:3}: [ 75.995742][ T4353] __mutex_lock_common+0x1e3/0x2400 [ 76.001548][ T4353] mutex_lock_nested+0x17/0x20 [ 76.006912][ T4353] rfkill_register+0x33/0x980 [ 76.012101][ T4353] hci_register_dev+0x452/0x970 [ 76.017553][ T4353] vhci_create_device+0x32c/0x5c0 [ 76.023090][ T4353] vhci_write+0x391/0x450 [ 76.028141][ T4353] vfs_write+0x745/0xd60 [ 76.032908][ T4353] ksys_write+0x152/0x260 [ 76.038017][ T4353] do_syscall_64+0x4c/0xa0 [ 76.043669][ T4353] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 76.051131][ T4353] [ 76.051131][ T4353] -> #3 (&data->open_mutex){+.+.}-{3:3}: [ 76.058932][ T4353] __mutex_lock_common+0x1e3/0x2400 [ 76.064644][ T4353] mutex_lock_nested+0x17/0x20 [ 76.069918][ T4353] vhci_send_frame+0x88/0x100 [ 76.075102][ T4353] hci_send_frame+0x1a9/0x2e0 [ 76.080285][ T4353] hci_tx_work+0x9f9/0x1710 [ 76.085341][ T4353] process_one_work+0x85f/0x1010 [ 76.090890][ T4353] worker_thread+0xaa6/0x1290 [ 76.096097][ T4353] kthread+0x436/0x520 [ 76.101581][ T4353] ret_from_fork+0x1f/0x30 [ 76.106610][ T4353] [ 76.106610][ T4353] -> #2 ((work_completion)(&hdev->tx_work)){+.+.}-{0:0}: [ 76.116201][ T4353] __flush_work+0x116/0x210 [ 76.121306][ T4353] hci_dev_do_close+0x1e7/0x1030 [ 76.126752][ T4353] hci_unregister_dev+0x2d7/0x580 [ 76.132286][ T4353] vhci_release+0x73/0xc0 [ 76.137207][ T4353] __fput+0x234/0x930 [ 76.141887][ T4353] task_work_run+0x125/0x1a0 [ 76.146982][ T4353] do_exit+0x626/0x20c0 [ 76.151726][ T4353] do_group_exit+0x12e/0x300 [ 76.156829][ T4353] get_signal+0x6d6/0x12d0 [ 76.161757][ T4353] arch_do_signal_or_restart+0xe7/0x12c0 [ 76.167921][ T4353] exit_to_user_mode_loop+0x9e/0x130 [ 76.173727][ T4353] exit_to_user_mode_prepare+0xee/0x180 [ 76.179869][ T4353] syscall_exit_to_user_mode+0x16/0x40 [ 76.185836][ T4353] do_syscall_64+0x58/0xa0 [ 76.190755][ T4353] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 76.197328][ T4353] [ 76.197328][ T4353] -> #1 (&hdev->req_lock){+.+.}-{3:3}: [ 76.204959][ T4353] __mutex_lock_common+0x1e3/0x2400 [ 76.210666][ T4353] mutex_lock_nested+0x17/0x20 [ 76.215932][ T4353] bg_scan_update+0x44/0x3b0 [ 76.221024][ T4353] process_one_work+0x85f/0x1010 [ 76.226494][ T4353] worker_thread+0xaa6/0x1290 [ 76.231681][ T4353] kthread+0x436/0x520 [ 76.236274][ T4353] ret_from_fork+0x1f/0x30 [ 76.241301][ T4353] [ 76.241301][ T4353] -> #0 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}: [ 76.251671][ T4353] __lock_acquire+0x2c42/0x7d10 [ 76.257045][ T4353] lock_acquire+0x19e/0x400 [ 76.262378][ T4353] __flush_work+0x116/0x210 [ 76.267410][ T4353] __cancel_work_timer+0x3f4/0x560 [ 76.273028][ T4353] hci_request_cancel_all+0xcc/0x300 [ 76.278826][ T4353] hci_dev_do_close+0x4e/0x1030 [ 76.284180][ T4353] hci_rfkill_set_block+0x10a/0x190 [ 76.289889][ T4353] rfkill_set_block+0x1c9/0x3d0 [ 76.295247][ T4353] rfkill_fop_write+0x452/0x560 [ 76.300598][ T4353] vfs_write+0x30b/0xd60 [ 76.305348][ T4353] ksys_write+0x152/0x260 [ 76.310349][ T4353] do_syscall_64+0x4c/0xa0 [ 76.315481][ T4353] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 76.323175][ T4353] [ 76.323175][ T4353] other info that might help us debug this: [ 76.323175][ T4353] [ 76.333856][ T4353] Chain exists of: [ 76.333856][ T4353] (work_completion)(&hdev->bg_scan_update) --> &data->open_mutex --> rfkill_global_mutex [ 76.333856][ T4353] [ 76.350291][ T4353] Possible unsafe locking scenario: [ 76.350291][ T4353] [ 76.357751][ T4353] CPU0 CPU1 [ 76.363408][ T4353] ---- ---- [ 76.369312][ T4353] lock(rfkill_global_mutex); [ 76.374116][ T4353] lock(&data->open_mutex); [ 76.381218][ T4353] lock(rfkill_global_mutex); [ 76.388855][ T4353] lock((work_completion)(&hdev->bg_scan_update)); [ 76.396332][ T4353] [ 76.396332][ T4353] *** DEADLOCK *** [ 76.396332][ T4353] [ 76.404637][ T4353] 1 lock held by syz.0.17/4353: [ 76.409644][ T4353] #0: ffffffff8d6c65a8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x18b/0x560 [ 76.419907][ T4353] [ 76.419907][ T4353] stack backtrace: [ 76.425797][ T4353] CPU: 1 PID: 4353 Comm: syz.0.17 Not tainted syzkaller #0 [ 76.433080][ T4353] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 76.443660][ T4353] Call Trace: [ 76.447028][ T4353] [ 76.449947][ T4353] dump_stack_lvl+0x188/0x250 [ 76.454846][ T4353] ? load_image+0x400/0x400 [ 76.459333][ T4353] ? show_regs_print_info+0x20/0x20 [ 76.464692][ T4353] ? print_circular_bug+0x12b/0x1a0 [ 76.470262][ T4353] check_noncircular+0x296/0x330 [ 76.475217][ T4353] ? look_up_lock_class+0x71/0x110 [ 76.480602][ T4353] ? add_chain_block+0x940/0x940 [ 76.485652][ T4353] ? lockdep_lock+0xf1/0x1f0 [ 76.490247][ T4353] ? __lock_acquire+0x12e8/0x7d10 [ 76.495263][ T4353] ? mark_lock+0x94/0x320 [ 76.499661][ T4353] ? _find_first_zero_bit+0xce/0xf0 [ 76.504950][ T4353] __lock_acquire+0x2c42/0x7d10 [ 76.509884][ T4353] ? verify_lock_unused+0x140/0x140 [ 76.515075][ T4353] ? verify_lock_unused+0x140/0x140 [ 76.520464][ T4353] ? mark_lock+0x94/0x320 [ 76.525406][ T4353] lock_acquire+0x19e/0x400 [ 76.529954][ T4353] ? __flush_work+0xfa/0x210 [ 76.534648][ T4353] ? __lock_acquire+0x7d10/0x7d10 [ 76.539658][ T4353] ? read_lock_is_recursive+0x10/0x10 [ 76.545108][ T4353] ? start_flush_work+0x776/0x820 [ 76.550305][ T4353] __flush_work+0x116/0x210 [ 76.554878][ T4353] ? __flush_work+0xfa/0x210 [ 76.559538][ T4353] ? flush_work+0x20/0x20 [ 76.563848][ T4353] ? try_to_grab_pending+0xfa/0x7f0 [ 76.569643][ T4353] ? mark_lock+0x94/0x320 [ 76.573972][ T4353] ? lockdep_hardirqs_on_prepare+0x409/0x770 [ 76.580036][ T4353] ? lock_chain_count+0x20/0x20 [ 76.584970][ T4353] ? mark_lock+0x94/0x320 [ 76.589284][ T4353] ? __cancel_work_timer+0x36a/0x560 [ 76.594682][ T4353] __cancel_work_timer+0x3f4/0x560 [ 76.599799][ T4353] ? cancel_work_sync+0x20/0x20 [ 76.604727][ T4353] ? __cancel_work+0x1f9/0x2e0 [ 76.609564][ T4353] ? lockdep_hardirqs_on+0x94/0x140 [ 76.614761][ T4353] ? __cancel_work+0x27b/0x2e0 [ 76.619511][ T4353] ? cancel_work+0x20/0x20 [ 76.623917][ T4353] ? lock_chain_count+0x20/0x20 [ 76.628755][ T4353] hci_request_cancel_all+0xcc/0x300 [ 76.634065][ T4353] hci_dev_do_close+0x4e/0x1030 [ 76.638905][ T4353] ? _raw_spin_unlock_irqrestore+0xc1/0x120 [ 76.644784][ T4353] ? _raw_spin_unlock+0x40/0x40 [ 76.649618][ T4353] hci_rfkill_set_block+0x10a/0x190 [ 76.655235][ T4353] ? rcu_lock_release+0x20/0x20 [ 76.660095][ T4353] rfkill_set_block+0x1c9/0x3d0 [ 76.664936][ T4353] rfkill_fop_write+0x452/0x560 [ 76.669971][ T4353] ? rfkill_fop_read+0x520/0x520 [ 76.674976][ T4353] ? common_file_perm+0xc0/0x1c0 [ 76.679899][ T4353] ? fsnotify_perm+0x5d/0x560 [ 76.684654][ T4353] ? security_file_permission+0x75/0xa0 [ 76.690366][ T4353] ? rfkill_fop_read+0x520/0x520 [ 76.695292][ T4353] vfs_write+0x30b/0xd60 [ 76.699532][ T4353] ? file_end_write+0x250/0x250 [ 76.704411][ T4353] ? __context_tracking_exit+0x4c/0x80 [ 76.710036][ T4353] ? __lock_acquire+0x7d10/0x7d10 [ 76.715061][ T4353] ? __fdget_pos+0x1e2/0x370 [ 76.719631][ T4353] ksys_write+0x152/0x260 [ 76.723949][ T4353] ? __ia32_sys_read+0x80/0x80 [ 76.728780][ T4353] ? lockdep_hardirqs_on+0x94/0x140 [ 76.733967][ T4353] do_syscall_64+0x4c/0xa0 [ 76.738481][ T4353] ? clear_bhb_loop+0x30/0x80 [ 76.743236][ T4353] ? clear_bhb_loop+0x30/0x80 [ 76.747967][ T4353] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 76.754131][ T4353] RIP: 0033:0x7f933d2dfe59 [ 76.758707][ T4353] 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 [ 76.780761][ T4353] RSP: 002b:00007fff28483498 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 76.790039][ T4353] RAX: ffffffffffffffda RBX: 00007f933d558fa0 RCX: 00007f933d2dfe59 [ 76.798100][ T4353] RDX: 0000000000000008 RSI: 0000200000000040 RDI: 0000000000000003 [ 76.806256][ T4353] RBP: 00007f933d375d6f R08: 0000000000000000 R09: 0000000000000000 [ 76.816133][ T4353] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 76.824650][ T4353] R13: 00007f933d558fac R14: 00007f933d558fa0 R15: 00007f933d558fa0 [ 76.832997][ T4353]