Warning: Permanently added '10.128.0.174' (ED25519) to the list of known hosts. 2026/04/22 07:34:24 parsed 1 programs [ 51.904988][ T4187] cgroup: Unknown subsys name 'net' [ 52.036447][ T4187] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size = 127995904 bytes [ 53.293681][ T4187] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k FS [ 56.063057][ T4242] chnl_net:caif_netlink_parms(): no params data found [ 56.132497][ T4242] bridge0: port 1(bridge_slave_0) entered blocking state [ 56.140224][ T4242] bridge0: port 1(bridge_slave_0) entered disabled state [ 56.148561][ T4242] device bridge_slave_0 entered promiscuous mode [ 56.159135][ T4242] bridge0: port 2(bridge_slave_1) entered blocking state [ 56.166528][ T4242] bridge0: port 2(bridge_slave_1) entered disabled state [ 56.175760][ T4242] device bridge_slave_1 entered promiscuous mode [ 56.201539][ T4242] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 56.214659][ T4242] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 56.242034][ T4242] team0: Port device team_slave_0 added [ 56.249702][ T4242] team0: Port device team_slave_1 added [ 56.272503][ T4242] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 56.279460][ T4242] 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. [ 56.305755][ T4242] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 56.323604][ T4242] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 56.330558][ T4242] 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. [ 56.357720][ T4242] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 56.392757][ T4242] device hsr_slave_0 entered promiscuous mode [ 56.399906][ T4242] device hsr_slave_1 entered promiscuous mode [ 56.509129][ T4242] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 56.518646][ T4242] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 56.527205][ T4242] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 56.535639][ T4242] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 56.555372][ T4242] bridge0: port 2(bridge_slave_1) entered blocking state [ 56.562571][ T4242] bridge0: port 2(bridge_slave_1) entered forwarding state [ 56.570284][ T4242] bridge0: port 1(bridge_slave_0) entered blocking state [ 56.577388][ T4242] bridge0: port 1(bridge_slave_0) entered forwarding state [ 56.654311][ T4242] 8021q: adding VLAN 0 to HW filter on device bond0 [ 56.677934][ T1349] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 56.714960][ T1349] bridge0: port 1(bridge_slave_0) entered disabled state [ 56.727806][ T1349] bridge0: port 2(bridge_slave_1) entered disabled state [ 56.739557][ T1349] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 56.776243][ T4242] 8021q: adding VLAN 0 to HW filter on device team0 [ 56.786035][ T1349] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 56.794872][ T1349] bridge0: port 1(bridge_slave_0) entered blocking state [ 56.802058][ T1349] bridge0: port 1(bridge_slave_0) entered forwarding state [ 56.814291][ T1349] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 56.823218][ T1349] bridge0: port 2(bridge_slave_1) entered blocking state [ 56.830275][ T1349] bridge0: port 2(bridge_slave_1) entered forwarding state [ 56.847755][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 56.857873][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 56.867529][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 56.879690][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 56.890059][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 56.900747][ T4242] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 56.970006][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 56.977827][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 56.989933][ T4242] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 57.006131][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 57.023071][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 57.031412][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 57.038974][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 57.048851][ T4242] device veth0_vlan entered promiscuous mode [ 57.059158][ T4242] device veth1_vlan entered promiscuous mode [ 57.076032][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 57.085238][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 57.096034][ T4242] device veth0_macvtap entered promiscuous mode [ 57.105807][ T4242] device veth1_macvtap entered promiscuous mode [ 57.137185][ T4242] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 57.144836][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 57.153184][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 57.160910][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 57.169425][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 57.182179][ T4242] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 57.190600][ T1359] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 57.199867][ T1359] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 57.225795][ T4242] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 57.234948][ T4242] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 57.243704][ T4242] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 57.252904][ T4242] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 57.434879][ T1359] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 57.445194][ T1359] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 57.456510][ T1349] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 57.473344][ T1359] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 57.482867][ T1359] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 57.490355][ T1359] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2026/04/22 07:34:32 executed programs: 0 [ 58.417397][ T4294] chnl_net:caif_netlink_parms(): no params data found [ 58.471076][ T4294] bridge0: port 1(bridge_slave_0) entered blocking state [ 58.478351][ T4294] bridge0: port 1(bridge_slave_0) entered disabled state [ 58.486672][ T4294] device bridge_slave_0 entered promiscuous mode [ 58.497425][ T4294] bridge0: port 2(bridge_slave_1) entered blocking state [ 58.504888][ T4294] bridge0: port 2(bridge_slave_1) entered disabled state [ 58.513001][ T4294] device bridge_slave_1 entered promiscuous mode [ 58.536771][ T4294] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 58.548207][ T4294] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 58.580887][ T4294] team0: Port device team_slave_0 added [ 58.589969][ T4294] team0: Port device team_slave_1 added [ 58.610439][ T4294] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 58.617662][ 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. [ 58.644655][ T4294] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 58.660646][ T4294] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 58.667785][ 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. [ 58.693990][ T4294] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 58.727876][ T4294] device hsr_slave_0 entered promiscuous mode [ 58.734985][ T4294] device hsr_slave_1 entered promiscuous mode [ 58.743236][ T4294] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 58.751028][ T4294] Cannot create hsr debugfs directory [ 58.844460][ T4294] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 60.332021][ T4303] Bluetooth: hci0: command 0x0409 tx timeout [ 62.412460][ T4257] Bluetooth: hci0: command 0x041b tx timeout [ 62.437003][ T4294] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 62.585830][ T4294] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 62.628569][ T4294] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 62.716139][ T4294] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 62.727277][ T4294] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 62.736584][ T4294] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 62.745165][ T4294] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 62.786119][ T4294] 8021q: adding VLAN 0 to HW filter on device bond0 [ 62.797245][ T1349] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 62.806222][ T1349] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 62.816386][ T4294] 8021q: adding VLAN 0 to HW filter on device team0 [ 62.826533][ T1349] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 62.835186][ T1349] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 62.844183][ T1349] bridge0: port 1(bridge_slave_0) entered blocking state [ 62.851259][ T1349] bridge0: port 1(bridge_slave_0) entered forwarding state [ 62.859227][ T1349] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 62.878250][ T1349] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 62.887128][ T1349] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 62.896895][ T1349] bridge0: port 2(bridge_slave_1) entered blocking state [ 62.904020][ T1349] bridge0: port 2(bridge_slave_1) entered forwarding state [ 62.916200][ T1349] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 62.941972][ T1359] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 62.954317][ T1359] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 62.963661][ T1359] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 62.972753][ T1359] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 62.995324][ T1359] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 63.004345][ T1359] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 63.015613][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 63.024650][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 63.035737][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 63.045431][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 63.056135][ T4294] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 63.138443][ T1359] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 63.146617][ T1359] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 63.172542][ T4294] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 63.188325][ T1359] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 63.197028][ T1359] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 63.213863][ T1349] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 63.224324][ T1349] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 63.234947][ T1349] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 63.242998][ T1349] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 63.261479][ T4294] device veth0_vlan entered promiscuous mode [ 63.271429][ T4294] device veth1_vlan entered promiscuous mode [ 63.287978][ T1349] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 63.296223][ T1349] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 63.305023][ T1349] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 63.314066][ T1349] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 63.325015][ T4294] device veth0_macvtap entered promiscuous mode [ 63.343980][ T4294] device veth1_macvtap entered promiscuous mode [ 63.355891][ T4294] batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3e) already exists on: batadv_slave_0 [ 63.367307][ T4294] batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems! [ 63.378959][ T4294] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 63.388987][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 63.397861][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 63.405796][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 63.414264][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 63.425034][ T4294] batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3f) already exists on: batadv_slave_1 [ 63.435732][ T4294] batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems! [ 63.447607][ T4294] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 63.456935][ T1359] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 63.466236][ T1359] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 63.484234][ T4294] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 63.493407][ T4294] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 63.502216][ T4294] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 63.510900][ T4294] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 63.574427][ T1359] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 63.585070][ T1359] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 63.599552][ T1349] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 63.625722][ T9] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 63.634048][ T9] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 63.642218][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 63.724835][ T144] device hsr_slave_0 left promiscuous mode [ 63.732827][ T144] device hsr_slave_1 left promiscuous mode [ 63.739300][ T144] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 63.747935][ T144] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 63.757454][ T144] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 63.765520][ T144] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 63.775687][ T144] device bridge_slave_1 left promiscuous mode [ 63.783072][ T144] bridge0: port 2(bridge_slave_1) entered disabled state [ 63.800782][ T144] device bridge_slave_0 left promiscuous mode [ 63.808542][ T144] bridge0: port 1(bridge_slave_0) entered disabled state [ 63.835081][ T144] device veth1_macvtap left promiscuous mode [ 63.842848][ T144] device veth0_macvtap left promiscuous mode [ 63.848949][ T144] device veth1_vlan left promiscuous mode [ 63.861732][ T144] device veth0_vlan left promiscuous mode [ 64.036983][ T144] team0 (unregistering): Port device team_slave_1 removed [ 64.050344][ T144] team0 (unregistering): Port device team_slave_0 removed [ 64.063912][ T144] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 64.077759][ T144] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 64.126992][ T144] bond0 (unregistering): Released all slaves [ 64.178432][ T4312] [ 64.180799][ T4312] ====================================================== [ 64.187812][ T4312] WARNING: possible circular locking dependency detected [ 64.194839][ T4312] syzkaller #0 Not tainted [ 64.199247][ T4312] ------------------------------------------------------ [ 64.206259][ T4312] syz.0.17/4312 is trying to acquire lock: [ 64.212056][ T4312] ffff888077accc28 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}, at: __flush_work+0xfa/0x210 [ 64.223124][ T4312] [ 64.223124][ T4312] but task is already holding lock: [ 64.230483][ T4312] ffffffff8d6c5de8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x18b/0x560 [ 64.240333][ T4312] [ 64.240333][ T4312] which lock already depends on the new lock. [ 64.240333][ T4312] [ 64.250731][ T4312] [ 64.250731][ T4312] the existing dependency chain (in reverse order) is: [ 64.259742][ T4312] [ 64.259742][ T4312] -> #4 (rfkill_global_mutex){+.+.}-{3:3}: [ 64.267830][ T4312] __mutex_lock_common+0x1e3/0x2400 [ 64.273558][ T4312] mutex_lock_nested+0x17/0x20 [ 64.278858][ T4312] rfkill_register+0x33/0x980 [ 64.284059][ T4312] hci_register_dev+0x452/0x970 [ 64.289441][ T4312] vhci_create_device+0x32c/0x5c0 [ 64.294997][ T4312] vhci_write+0x391/0x450 [ 64.299854][ T4312] vfs_write+0x745/0xd60 [ 64.304619][ T4312] ksys_write+0x152/0x260 [ 64.309469][ T4312] do_syscall_64+0x4c/0xa0 [ 64.314410][ T4312] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 64.320824][ T4312] [ 64.320824][ T4312] -> #3 (&data->open_mutex){+.+.}-{3:3}: [ 64.328641][ T4312] __mutex_lock_common+0x1e3/0x2400 [ 64.334458][ T4312] mutex_lock_nested+0x17/0x20 [ 64.339746][ T4312] vhci_send_frame+0x88/0x100 [ 64.344948][ T4312] hci_send_frame+0x1a9/0x2e0 [ 64.350153][ T4312] hci_tx_work+0x9f9/0x1710 [ 64.355181][ T4312] process_one_work+0x85f/0x1010 [ 64.360644][ T4312] worker_thread+0xaa6/0x1290 [ 64.365846][ T4312] kthread+0x436/0x520 [ 64.370438][ T4312] ret_from_fork+0x1f/0x30 [ 64.375375][ T4312] [ 64.375375][ T4312] -> #2 ((work_completion)(&hdev->tx_work)){+.+.}-{0:0}: [ 64.384582][ T4312] __flush_work+0x116/0x210 [ 64.389608][ T4312] hci_dev_do_close+0x1e7/0x1030 [ 64.395070][ T4312] hci_unregister_dev+0x2d7/0x580 [ 64.400620][ T4312] vhci_release+0x73/0xc0 [ 64.405479][ T4312] __fput+0x234/0x930 [ 64.409981][ T4312] task_work_run+0x125/0x1a0 [ 64.415098][ T4312] do_exit+0x626/0x20c0 [ 64.419772][ T4312] do_group_exit+0x12e/0x300 [ 64.424885][ T4312] get_signal+0x6ca/0x12c0 [ 64.429820][ T4312] arch_do_signal_or_restart+0xe7/0x12c0 [ 64.435977][ T4312] exit_to_user_mode_loop+0x9e/0x130 [ 64.441780][ T4312] exit_to_user_mode_prepare+0xee/0x180 [ 64.447847][ T4312] syscall_exit_to_user_mode+0x16/0x40 [ 64.453831][ T4312] do_syscall_64+0x58/0xa0 [ 64.458768][ T4312] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 64.465184][ T4312] [ 64.465184][ T4312] -> #1 (&hdev->req_lock){+.+.}-{3:3}: [ 64.472826][ T4312] __mutex_lock_common+0x1e3/0x2400 [ 64.478554][ T4312] mutex_lock_nested+0x17/0x20 [ 64.483845][ T4312] bg_scan_update+0x44/0x3b0 [ 64.488962][ T4312] process_one_work+0x85f/0x1010 [ 64.494422][ T4312] worker_thread+0xaa6/0x1290 [ 64.499622][ T4312] kthread+0x436/0x520 [ 64.504211][ T4312] ret_from_fork+0x1f/0x30 [ 64.509150][ T4312] [ 64.509150][ T4312] -> #0 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}: [ 64.518961][ T4312] __lock_acquire+0x2c42/0x7d10 [ 64.524336][ T4312] lock_acquire+0x19e/0x400 [ 64.529364][ T4312] __flush_work+0x116/0x210 [ 64.533952][ T4265] Bluetooth: hci0: command 0x040f tx timeout [ 64.534384][ T4312] __cancel_work_timer+0x3f4/0x560 [ 64.545958][ T4312] hci_request_cancel_all+0xcc/0x300 [ 64.551767][ T4312] hci_dev_do_close+0x4e/0x1030 [ 64.557142][ T4312] hci_rfkill_set_block+0x10a/0x190 [ 64.562862][ T4312] rfkill_set_block+0x1c9/0x3d0 [ 64.568232][ T4312] rfkill_fop_write+0x452/0x560 [ 64.573602][ T4312] vfs_write+0x30b/0xd60 [ 64.578362][ T4312] ksys_write+0x152/0x260 [ 64.583213][ T4312] do_syscall_64+0x4c/0xa0 [ 64.588154][ T4312] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 64.594568][ T4312] [ 64.594568][ T4312] other info that might help us debug this: [ 64.594568][ T4312] [ 64.604790][ T4312] Chain exists of: [ 64.604790][ T4312] (work_completion)(&hdev->bg_scan_update) --> &data->open_mutex --> rfkill_global_mutex [ 64.604790][ T4312] [ 64.620514][ T4312] Possible unsafe locking scenario: [ 64.620514][ T4312] [ 64.627962][ T4312] CPU0 CPU1 [ 64.633327][ T4312] ---- ---- [ 64.638697][ T4312] lock(rfkill_global_mutex); [ 64.643468][ T4312] lock(&data->open_mutex); [ 64.650575][ T4312] lock(rfkill_global_mutex); [ 64.657858][ T4312] lock((work_completion)(&hdev->bg_scan_update)); [ 64.664444][ T4312] [ 64.664444][ T4312] *** DEADLOCK *** [ 64.664444][ T4312] [ 64.672586][ T4312] 1 lock held by syz.0.17/4312: [ 64.677431][ T4312] #0: ffffffff8d6c5de8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x18b/0x560 [ 64.687537][ T4312] [ 64.687537][ T4312] stack backtrace: [ 64.693443][ T4312] CPU: 0 PID: 4312 Comm: syz.0.17 Not tainted syzkaller #0 [ 64.700639][ T4312] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 64.710697][ T4312] Call Trace: [ 64.713975][ T4312] [ 64.716901][ T4312] dump_stack_lvl+0x188/0x250 [ 64.721581][ T4312] ? load_image+0x400/0x400 [ 64.726082][ T4312] ? show_regs_print_info+0x20/0x20 [ 64.731284][ T4312] ? print_circular_bug+0x12b/0x1a0 [ 64.736483][ T4312] check_noncircular+0x296/0x330 [ 64.741432][ T4312] ? look_up_lock_class+0x71/0x110 [ 64.746551][ T4312] ? add_chain_block+0x940/0x940 [ 64.751488][ T4312] ? lockdep_lock+0xf1/0x1f0 [ 64.756089][ T4312] ? __lock_acquire+0x12e8/0x7d10 [ 64.761159][ T4312] ? mark_lock+0x94/0x320 [ 64.765494][ T4312] __lock_acquire+0x2c42/0x7d10 [ 64.770362][ T4312] ? verify_lock_unused+0x140/0x140 [ 64.775571][ T4312] ? verify_lock_unused+0x140/0x140 [ 64.780776][ T4312] ? mark_lock+0x94/0x320 [ 64.785115][ T4312] lock_acquire+0x19e/0x400 [ 64.789620][ T4312] ? __flush_work+0xfa/0x210 [ 64.794207][ T4312] ? __lock_acquire+0x7d10/0x7d10 [ 64.799263][ T4312] ? read_lock_is_recursive+0x10/0x10 [ 64.804726][ T4312] ? start_flush_work+0x776/0x820 [ 64.809753][ T4312] __flush_work+0x116/0x210 [ 64.814264][ T4312] ? __flush_work+0xfa/0x210 [ 64.818856][ T4312] ? flush_work+0x20/0x20 [ 64.823184][ T4312] ? try_to_grab_pending+0xfa/0x7f0 [ 64.828384][ T4312] ? mark_lock+0x94/0x320 [ 64.832712][ T4312] ? lockdep_hardirqs_on_prepare+0x409/0x770 [ 64.838699][ T4312] ? lock_chain_count+0x20/0x20 [ 64.843550][ T4312] ? mark_lock+0x94/0x320 [ 64.847881][ T4312] ? __cancel_work_timer+0x36a/0x560 [ 64.853168][ T4312] __cancel_work_timer+0x3f4/0x560 [ 64.858281][ T4312] ? cancel_work_sync+0x20/0x20 [ 64.863130][ T4312] ? __cancel_work+0x1f9/0x2e0 [ 64.867895][ T4312] ? lockdep_hardirqs_on+0x94/0x140 [ 64.873097][ T4312] ? __cancel_work+0x27b/0x2e0 [ 64.877857][ T4312] ? cancel_work+0x20/0x20 [ 64.882274][ T4312] ? lock_chain_count+0x20/0x20 [ 64.887128][ T4312] hci_request_cancel_all+0xcc/0x300 [ 64.892421][ T4312] hci_dev_do_close+0x4e/0x1030 [ 64.897276][ T4312] ? _raw_spin_unlock_irqrestore+0xc1/0x120 [ 64.903177][ T4312] ? _raw_spin_unlock+0x40/0x40 [ 64.908030][ T4312] hci_rfkill_set_block+0x10a/0x190 [ 64.913232][ T4312] ? rcu_lock_release+0x20/0x20 [ 64.918090][ T4312] rfkill_set_block+0x1c9/0x3d0 [ 64.922942][ T4312] rfkill_fop_write+0x452/0x560 [ 64.927799][ T4312] ? rfkill_fop_read+0x520/0x520 [ 64.932742][ T4312] ? common_file_perm+0x140/0x1c0 [ 64.937772][ T4312] ? fsnotify_perm+0x5d/0x560 [ 64.942457][ T4312] ? security_file_permission+0x75/0xa0 [ 64.948015][ T4312] ? rfkill_fop_read+0x520/0x520 [ 64.952960][ T4312] vfs_write+0x30b/0xd60 [ 64.957207][ T4312] ? file_end_write+0x250/0x250 [ 64.962055][ T4312] ? __context_tracking_exit+0x4c/0x80 [ 64.967506][ T4312] ? __lock_acquire+0x7d10/0x7d10 [ 64.972509][ T4312] ? __fdget_pos+0x1e2/0x370 [ 64.977077][ T4312] ksys_write+0x152/0x260 [ 64.981387][ T4312] ? __ia32_sys_read+0x80/0x80 [ 64.986145][ T4312] ? lockdep_hardirqs_on+0x94/0x140 [ 64.991325][ T4312] do_syscall_64+0x4c/0xa0 [ 64.995718][ T4312] ? clear_bhb_loop+0x30/0x80 [ 65.000369][ T4312] ? clear_bhb_loop+0x30/0x80 [ 65.005019][ T4312] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 65.010898][ T4312] RIP: 0033:0x7ff91dfe6819 [ 65.015293][ T4312] 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 [ 65.034877][ T4312] RSP: 002b:00007ffc99cd8018 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 65.043274][ T4312] RAX: ffffffffffffffda RBX: 00007ff91e25ffa0 RCX: 00007ff91dfe6819 [ 65.051227][ T4312] RDX: 0000000000000008 RSI: 0000200000000000 RDI: 0000000000000003 [ 65.059181][ T4312] RBP: 00007ff91e07cc91 R08: 0000000000000000 R09: 0000000000000000 [ 65.067136][ T4312] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 65.075097][ T4312] R13: 00007ff91e25ffac R14: 00007ff91e25ffa0 R15: 00007ff91e25ffa0 [ 65.083061][ T4312]