Warning: Permanently added '10.128.0.204' (ED25519) to the list of known hosts. 2026/07/09 10:48:59 parsed 1 programs 2026/07/09 10:48:59 serving rpc on tcp://39135 [ 56.516283][ T4197] cgroup: Unknown subsys name 'net' [ 56.662345][ T4197] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size = 127995904 bytes [ 57.871490][ T4197] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k FS [ 60.500340][ T4239] syz-executor (4239) used greatest stack depth: 20848 bytes left [ 60.741475][ T1494] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 60.754102][ T1494] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 60.772297][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 60.788309][ T154] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 60.796137][ T154] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 60.806251][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 61.293256][ T4282] chnl_net:caif_netlink_parms(): no params data found [ 61.332146][ T4282] bridge0: port 1(bridge_slave_0) entered blocking state [ 61.339828][ T4282] bridge0: port 1(bridge_slave_0) entered disabled state [ 61.347559][ T4282] device bridge_slave_0 entered promiscuous mode [ 61.356262][ T4282] bridge0: port 2(bridge_slave_1) entered blocking state [ 61.363616][ T4282] bridge0: port 2(bridge_slave_1) entered disabled state [ 61.371284][ T4282] device bridge_slave_1 entered promiscuous mode [ 61.389076][ T4282] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 61.400262][ T4282] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 61.434791][ T4282] team0: Port device team_slave_0 added [ 61.442326][ T4282] team0: Port device team_slave_1 added [ 61.456981][ T4282] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 61.464048][ T4282] 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. [ 61.490440][ T4282] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 61.504161][ T4282] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 61.511267][ T4282] 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. [ 61.537490][ T4282] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 61.581408][ T4282] device hsr_slave_0 entered promiscuous mode [ 61.588291][ T4282] device hsr_slave_1 entered promiscuous mode [ 61.703017][ T4282] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 61.713063][ T4282] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 61.721778][ T4282] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 61.731543][ T4282] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 61.809084][ T4282] 8021q: adding VLAN 0 to HW filter on device bond0 [ 61.821897][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 61.831312][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 61.842008][ T4282] 8021q: adding VLAN 0 to HW filter on device team0 [ 61.871797][ T1494] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 61.881472][ T1494] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 61.890511][ T1494] bridge0: port 1(bridge_slave_0) entered blocking state [ 61.897735][ T1494] bridge0: port 1(bridge_slave_0) entered forwarding state [ 61.911421][ T1494] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 61.919781][ T1494] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 61.928757][ T1494] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 61.937058][ T1494] bridge0: port 2(bridge_slave_1) entered blocking state [ 61.944129][ T1494] bridge0: port 2(bridge_slave_1) entered forwarding state [ 61.971824][ T1494] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 61.983046][ T1494] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 61.994531][ T1494] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 62.003306][ T1494] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 62.012023][ T1494] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 62.035690][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 62.044942][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 62.056471][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 62.069130][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 62.098246][ T4282] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 62.194020][ T1477] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 62.202452][ T1477] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 62.217172][ T4282] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 62.238717][ T1477] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 62.264016][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 62.273100][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 62.282958][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 62.293573][ T4282] device veth0_vlan entered promiscuous mode [ 62.307608][ T4282] device veth1_vlan entered promiscuous mode [ 62.331238][ T1494] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 62.339931][ T1494] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 62.349447][ T1494] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 62.362003][ T4282] device veth0_macvtap entered promiscuous mode [ 62.381324][ T4282] device veth1_macvtap entered promiscuous mode [ 62.399744][ T4282] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 62.407249][ T1494] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 62.418366][ T1494] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 62.427139][ T1494] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 62.441946][ T4282] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 62.451379][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 62.460239][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 62.472872][ T4282] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 62.482423][ T4282] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 62.491172][ T4282] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 62.502456][ T4282] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 62.626112][ T4282] syz-executor (4282) used greatest stack depth: 20464 bytes left 2026/07/09 10:49:07 executed programs: 0 [ 63.334911][ T4300] chnl_net:caif_netlink_parms(): no params data found [ 63.386584][ T4300] bridge0: port 1(bridge_slave_0) entered blocking state [ 63.393777][ T4300] bridge0: port 1(bridge_slave_0) entered disabled state [ 63.407048][ T4300] device bridge_slave_0 entered promiscuous mode [ 63.419508][ T4300] bridge0: port 2(bridge_slave_1) entered blocking state [ 63.426563][ T4300] bridge0: port 2(bridge_slave_1) entered disabled state [ 63.434611][ T4300] device bridge_slave_1 entered promiscuous mode [ 63.457249][ T4300] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 63.469997][ T4300] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 63.494642][ T4300] team0: Port device team_slave_0 added [ 63.504736][ T4300] team0: Port device team_slave_1 added [ 63.523857][ T4300] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 63.530970][ T4300] 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. [ 63.560333][ T4300] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 63.576758][ T144] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 63.595363][ T4300] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 63.602507][ T4300] 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. [ 63.629717][ T4300] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 63.659426][ T4300] device hsr_slave_0 entered promiscuous mode [ 63.666222][ T4300] device hsr_slave_1 entered promiscuous mode [ 63.673201][ T4300] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 63.681203][ T4300] Cannot create hsr debugfs directory [ 65.238134][ T26] Bluetooth: hci0: command 0x0409 tx timeout [ 65.883377][ T144] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 67.213001][ T144] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 67.272977][ T144] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 67.318731][ T1107] Bluetooth: hci0: command 0x041b tx timeout [ 68.065843][ T4300] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 68.086444][ T4300] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 68.095984][ T4300] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 68.119111][ T4300] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 68.163922][ T4300] 8021q: adding VLAN 0 to HW filter on device bond0 [ 68.185684][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 68.193928][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 68.204454][ T4300] 8021q: adding VLAN 0 to HW filter on device team0 [ 68.213936][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 68.222992][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 68.231712][ T9] bridge0: port 1(bridge_slave_0) entered blocking state [ 68.238815][ T9] bridge0: port 1(bridge_slave_0) entered forwarding state [ 68.248072][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 68.258990][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 68.268120][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 68.276577][ T154] bridge0: port 2(bridge_slave_1) entered blocking state [ 68.283652][ T154] bridge0: port 2(bridge_slave_1) entered forwarding state [ 68.304306][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 68.314905][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 68.327266][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 68.336359][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 68.344921][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 68.371338][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 68.381179][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 68.392888][ T4343] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 68.401267][ T4343] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 68.415749][ T1494] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 68.424724][ T1494] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 68.438985][ T4300] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 68.507257][ T144] device hsr_slave_0 left promiscuous mode [ 68.516047][ T144] device hsr_slave_1 left promiscuous mode [ 68.523295][ T144] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 68.533434][ T144] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 68.544439][ T144] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 68.552254][ T144] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 68.560335][ T144] device bridge_slave_1 left promiscuous mode [ 68.567275][ T144] bridge0: port 2(bridge_slave_1) entered disabled state [ 68.582628][ T144] device bridge_slave_0 left promiscuous mode [ 68.588934][ T144] bridge0: port 1(bridge_slave_0) entered disabled state [ 68.608590][ T144] device veth1_macvtap left promiscuous mode [ 68.614900][ T144] device veth0_macvtap left promiscuous mode [ 68.621839][ T144] device veth1_vlan left promiscuous mode [ 68.627881][ T144] device veth0_vlan left promiscuous mode [ 68.753785][ T144] team0 (unregistering): Port device team_slave_1 removed [ 68.769231][ T144] team0 (unregistering): Port device team_slave_0 removed [ 68.781216][ T144] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 68.794346][ T144] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 68.843385][ T144] bond0 (unregistering): Released all slaves [ 68.922769][ T4343] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 68.930611][ T4343] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 68.941938][ T4300] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 68.963453][ T4343] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 68.972292][ T4343] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 68.993703][ T4343] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 69.002621][ T4343] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 69.011689][ T4343] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 69.020247][ T4343] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 69.029493][ T4300] device veth0_vlan entered promiscuous mode [ 69.042837][ T4300] device veth1_vlan entered promiscuous mode [ 69.064625][ T1494] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 69.074656][ T1494] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 69.083988][ T1494] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 69.092666][ T1494] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 69.105720][ T4300] device veth0_macvtap entered promiscuous mode [ 69.126003][ T4300] device veth1_macvtap entered promiscuous mode [ 69.140175][ T4300] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 69.148605][ T4343] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 69.156681][ T4343] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 69.165499][ T4343] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 69.174181][ T4343] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 69.186386][ T4300] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 69.194924][ T4343] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 69.204212][ T4343] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 69.214923][ T4300] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 69.223853][ T4300] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 69.232943][ T4300] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 69.241847][ T4300] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 69.289279][ T4343] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 69.297123][ T4343] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 69.314518][ T1494] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 69.333334][ T9] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 69.341539][ T9] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 69.350485][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 69.397962][ T26] Bluetooth: hci0: command 0x040f tx timeout [ 69.459404][ T4348] [ 69.461772][ T4348] ====================================================== [ 69.468789][ T4348] WARNING: possible circular locking dependency detected [ 69.475820][ T4348] syzkaller #0 Not tainted [ 69.480236][ T4348] ------------------------------------------------------ [ 69.487243][ T4348] syz.0.17/4348 is trying to acquire lock: [ 69.493038][ T4348] ffff88802ae99028 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}, at: __flush_work+0xfa/0x210 [ 69.504109][ T4348] [ 69.504109][ T4348] but task is already holding lock: [ 69.511475][ T4348] ffffffff8d6d3c28 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x1ae/0x560 [ 69.521144][ T4348] [ 69.521144][ T4348] which lock already depends on the new lock. [ 69.521144][ T4348] [ 69.531547][ T4348] [ 69.531547][ T4348] the existing dependency chain (in reverse order) is: [ 69.540561][ T4348] [ 69.540561][ T4348] -> #4 (rfkill_global_mutex){+.+.}-{3:3}: [ 69.548555][ T4348] __mutex_lock_common+0x1e5/0x2400 [ 69.554280][ T4348] mutex_lock_nested+0x17/0x20 [ 69.559566][ T4348] rfkill_register+0x2f/0x970 [ 69.564762][ T4348] hci_register_dev+0x459/0x980 [ 69.570129][ T4348] vhci_create_device+0x32e/0x5c0 [ 69.575685][ T4348] vhci_write+0x389/0x440 [ 69.580534][ T4348] vfs_write+0x748/0xd70 [ 69.585290][ T4348] ksys_write+0x153/0x260 [ 69.590135][ T4348] do_syscall_64+0x4c/0xa0 [ 69.595066][ T4348] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 69.601543][ T4348] [ 69.601543][ T4348] -> #3 (&data->open_mutex){+.+.}-{3:3}: [ 69.609369][ T4348] __mutex_lock_common+0x1e5/0x2400 [ 69.615099][ T4348] mutex_lock_nested+0x17/0x20 [ 69.620404][ T4348] vhci_send_frame+0x88/0x100 [ 69.625606][ T4348] hci_send_frame+0x1a9/0x2e0 [ 69.630815][ T4348] hci_tx_work+0x9b5/0x16d0 [ 69.635835][ T4348] process_one_work+0x867/0xff0 [ 69.641327][ T4348] worker_thread+0xad7/0x12a0 [ 69.646540][ T4348] kthread+0x42e/0x520 [ 69.651147][ T4348] ret_from_fork+0x1f/0x30 [ 69.656099][ T4348] [ 69.656099][ T4348] -> #2 ((work_completion)(&hdev->tx_work)){+.+.}-{0:0}: [ 69.665310][ T4348] __flush_work+0x116/0x210 [ 69.670334][ T4348] hci_dev_do_close+0x201/0x1020 [ 69.675779][ T4348] hci_unregister_dev+0x2eb/0x590 [ 69.681474][ T4348] vhci_release+0x73/0xc0 [ 69.686320][ T4348] __fput+0x212/0x8c0 [ 69.690810][ T4348] task_work_run+0x125/0x1a0 [ 69.695905][ T4348] do_exit+0x635/0x2110 [ 69.700573][ T4348] do_group_exit+0x12c/0x2f0 [ 69.705676][ T4348] get_signal+0x7eb/0x12e0 [ 69.710602][ T4348] arch_do_signal_or_restart+0xe6/0x12a0 [ 69.716745][ T4348] exit_to_user_mode_loop+0x9e/0x130 [ 69.722538][ T4348] exit_to_user_mode_prepare+0xee/0x180 [ 69.728587][ T4348] syscall_exit_to_user_mode+0x16/0x40 [ 69.734743][ T4348] do_syscall_64+0x58/0xa0 [ 69.739667][ T4348] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 69.746169][ T4348] [ 69.746169][ T4348] -> #1 (&hdev->req_lock){+.+.}-{3:3}: [ 69.753791][ T4348] __mutex_lock_common+0x1e5/0x2400 [ 69.760622][ T4348] mutex_lock_nested+0x17/0x20 [ 69.765885][ T4348] bg_scan_update+0x44/0x3b0 [ 69.770987][ T4348] process_one_work+0x867/0xff0 [ 69.776344][ T4348] worker_thread+0xad7/0x12a0 [ 69.781628][ T4348] kthread+0x42e/0x520 [ 69.786202][ T4348] ret_from_fork+0x1f/0x30 [ 69.791140][ T4348] [ 69.791140][ T4348] -> #0 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}: [ 69.801034][ T4348] __lock_acquire+0x2c66/0x7b50 [ 69.806396][ T4348] lock_acquire+0x19e/0x400 [ 69.811512][ T4348] __flush_work+0x116/0x210 [ 69.816892][ T4348] __cancel_work_timer+0x3f4/0x560 [ 69.822777][ T4348] hci_request_cancel_all+0xcc/0x300 [ 69.828566][ T4348] hci_dev_do_close+0x4e/0x1020 [ 69.833919][ T4348] hci_rfkill_set_block+0x101/0x180 [ 69.839622][ T4348] rfkill_set_block+0x1c1/0x3c0 [ 69.844980][ T4348] rfkill_fop_write+0x453/0x560 [ 69.850342][ T4348] vfs_write+0x304/0xd70 [ 69.855107][ T4348] ksys_write+0x153/0x260 [ 69.859947][ T4348] do_syscall_64+0x4c/0xa0 [ 69.864870][ T4348] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 69.871270][ T4348] [ 69.871270][ T4348] other info that might help us debug this: [ 69.871270][ T4348] [ 69.881478][ T4348] Chain exists of: [ 69.881478][ T4348] (work_completion)(&hdev->bg_scan_update) --> &data->open_mutex --> rfkill_global_mutex [ 69.881478][ T4348] [ 69.897179][ T4348] Possible unsafe locking scenario: [ 69.897179][ T4348] [ 69.904609][ T4348] CPU0 CPU1 [ 69.909949][ T4348] ---- ---- [ 69.915293][ T4348] lock(rfkill_global_mutex); [ 69.920050][ T4348] lock(&data->open_mutex); [ 69.927138][ T4348] lock(rfkill_global_mutex); [ 69.934398][ T4348] lock((work_completion)(&hdev->bg_scan_update)); [ 69.941318][ T4348] [ 69.941318][ T4348] *** DEADLOCK *** [ 69.941318][ T4348] [ 69.949440][ T4348] 1 lock held by syz.0.17/4348: [ 69.954266][ T4348] #0: ffffffff8d6d3c28 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x1ae/0x560 [ 69.964336][ T4348] [ 69.964336][ T4348] stack backtrace: [ 69.970211][ T4348] CPU: 1 PID: 4348 Comm: syz.0.17 Not tainted syzkaller #0 [ 69.977391][ T4348] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 [ 69.987436][ T4348] Call Trace: [ 69.990702][ T4348] [ 69.993623][ T4348] dump_stack_lvl+0x188/0x250 [ 69.998286][ T4348] ? load_image+0x410/0x410 [ 70.002789][ T4348] ? show_regs_print_info+0x20/0x20 [ 70.007974][ T4348] ? print_circular_bug+0x12b/0x1a0 [ 70.013171][ T4348] check_noncircular+0x296/0x330 [ 70.018198][ T4348] ? look_up_lock_class+0x71/0x110 [ 70.023307][ T4348] ? add_chain_block+0x9b0/0x9b0 [ 70.028234][ T4348] ? lockdep_lock+0xf1/0x1f0 [ 70.032810][ T4348] ? __lock_acquire+0x1305/0x7b50 [ 70.037816][ T4348] ? mark_lock+0x94/0x320 [ 70.042134][ T4348] ? _find_first_zero_bit+0xd1/0xf0 [ 70.047345][ T4348] __lock_acquire+0x2c66/0x7b50 [ 70.052184][ T4348] ? verify_lock_unused+0x140/0x140 [ 70.057366][ T4348] ? verify_lock_unused+0x140/0x140 [ 70.062554][ T4348] lock_acquire+0x19e/0x400 [ 70.067043][ T4348] ? __flush_work+0xfa/0x210 [ 70.071616][ T4348] ? __lock_acquire+0x7b50/0x7b50 [ 70.076626][ T4348] ? read_lock_is_recursive+0x10/0x10 [ 70.081980][ T4348] ? start_flush_work+0x784/0x830 [ 70.086990][ T4348] __flush_work+0x116/0x210 [ 70.091475][ T4348] ? __flush_work+0xfa/0x210 [ 70.096074][ T4348] ? flush_work+0x20/0x20 [ 70.100387][ T4348] ? try_to_grab_pending+0xfb/0x820 [ 70.105570][ T4348] ? mark_lock+0x94/0x320 [ 70.109882][ T4348] ? lockdep_hardirqs_on_prepare+0x448/0x7c0 [ 70.115854][ T4348] ? lock_chain_count+0x20/0x20 [ 70.120688][ T4348] ? mark_lock+0x94/0x320 [ 70.125000][ T4348] ? __cancel_work_timer+0x36a/0x560 [ 70.130266][ T4348] __cancel_work_timer+0x3f4/0x560 [ 70.135365][ T4348] ? cancel_work_sync+0x20/0x20 [ 70.140198][ T4348] ? __cancel_work+0x1f9/0x2e0 [ 70.144946][ T4348] ? lockdep_hardirqs_on+0x94/0x140 [ 70.150143][ T4348] ? __cancel_work+0x27b/0x2e0 [ 70.155343][ T4348] ? cancel_work+0x20/0x20 [ 70.159746][ T4348] hci_request_cancel_all+0xcc/0x300 [ 70.165044][ T4348] hci_dev_do_close+0x4e/0x1020 [ 70.169878][ T4348] ? _raw_spin_unlock_irqrestore+0xc1/0x120 [ 70.176886][ T4348] ? _raw_spin_unlock+0x40/0x40 [ 70.181723][ T4348] hci_rfkill_set_block+0x101/0x180 [ 70.186911][ T4348] ? rcu_lock_release+0x20/0x20 [ 70.191745][ T4348] rfkill_set_block+0x1c1/0x3c0 [ 70.196580][ T4348] rfkill_fop_write+0x453/0x560 [ 70.201516][ T4348] ? rfkill_fop_read+0x560/0x560 [ 70.206435][ T4348] ? common_file_perm+0xf0/0x1c0 [ 70.211355][ T4348] ? fsnotify_perm+0x5d/0x560 [ 70.216021][ T4348] ? security_file_permission+0x75/0xa0 [ 70.221574][ T4348] ? rfkill_fop_read+0x560/0x560 [ 70.226519][ T4348] vfs_write+0x304/0xd70 [ 70.230754][ T4348] ? file_end_write+0x250/0x250 [ 70.235589][ T4348] ? __context_tracking_exit+0x4c/0x80 [ 70.241042][ T4348] ? __fdget_pos+0x1e2/0x370 [ 70.245615][ T4348] ksys_write+0x153/0x260 [ 70.249928][ T4348] ? __ia32_sys_read+0x80/0x80 [ 70.254671][ T4348] ? lockdep_hardirqs_on+0x94/0x140 [ 70.259851][ T4348] do_syscall_64+0x4c/0xa0 [ 70.264253][ T4348] ? clear_bhb_loop+0x30/0x80 [ 70.268932][ T4348] ? clear_bhb_loop+0x30/0x80 [ 70.273590][ T4348] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 70.279485][ T4348] RIP: 0033:0x7f98caf31e59 [ 70.283894][ T4348] 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 [ 70.303739][ T4348] RSP: 002b:00007ffe775419f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 70.312221][ T4348] RAX: ffffffffffffffda RBX: 00007f98cb1b9fa0 RCX: 00007f98caf31e59 [ 70.320175][ T4348] RDX: 0000000000000008 RSI: 0000200000000040 RDI: 0000000000000003 [ 70.328125][ T4348] RBP: 00007f98cafc7e6f R08: 0000000000000000 R09: 0000000000000000 [ 70.336075][ T4348] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 70.344023][ T4348] R13: 00007f98cb1b9fac R14: 00007f98cb1b9fa0 R15: 00007f98cb1b9fa0 [ 70.351982][ T4348]