Warning: Permanently added '10.128.0.146' (ED25519) to the list of known hosts. 2026/04/04 06:50:09 parsed 1 programs [ 53.481343][ T4189] cgroup: Unknown subsys name 'net' [ 53.620983][ T4189] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size = 127995904 bytes [ 54.897771][ T4189] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k FS [ 56.442362][ T4207] chnl_net:caif_netlink_parms(): no params data found [ 56.485721][ T4207] bridge0: port 1(bridge_slave_0) entered blocking state [ 56.493429][ T4207] bridge0: port 1(bridge_slave_0) entered disabled state [ 56.501324][ T4207] device bridge_slave_0 entered promiscuous mode [ 56.510248][ T4207] bridge0: port 2(bridge_slave_1) entered blocking state [ 56.517711][ T4207] bridge0: port 2(bridge_slave_1) entered disabled state [ 56.525759][ T4207] device bridge_slave_1 entered promiscuous mode [ 56.546569][ T4207] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 56.557355][ T4207] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 56.577378][ T4207] team0: Port device team_slave_0 added [ 56.584508][ T4207] team0: Port device team_slave_1 added [ 56.602419][ T4207] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 56.609592][ T4207] 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. [ 56.635579][ T4207] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 56.650205][ T4207] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 56.657237][ T4207] 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. [ 56.683311][ T4207] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 56.713361][ T4207] device hsr_slave_0 entered promiscuous mode [ 56.720446][ T4207] device hsr_slave_1 entered promiscuous mode [ 56.804990][ T4207] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 56.817820][ T4207] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 56.828739][ T4207] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 56.839907][ T4207] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 56.868327][ T4207] bridge0: port 2(bridge_slave_1) entered blocking state [ 56.875631][ T4207] bridge0: port 2(bridge_slave_1) entered forwarding state [ 56.883613][ T4207] bridge0: port 1(bridge_slave_0) entered blocking state [ 56.890757][ T4207] bridge0: port 1(bridge_slave_0) entered forwarding state [ 56.954347][ T4207] 8021q: adding VLAN 0 to HW filter on device bond0 [ 56.973603][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 56.987306][ T144] bridge0: port 1(bridge_slave_0) entered disabled state [ 56.996364][ T144] bridge0: port 2(bridge_slave_1) entered disabled state [ 57.012533][ T4207] 8021q: adding VLAN 0 to HW filter on device team0 [ 57.025099][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 57.034107][ T144] bridge0: port 1(bridge_slave_0) entered blocking state [ 57.041215][ T144] bridge0: port 1(bridge_slave_0) entered forwarding state [ 57.064889][ T151] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 57.075176][ T151] bridge0: port 2(bridge_slave_1) entered blocking state [ 57.082290][ T151] bridge0: port 2(bridge_slave_1) entered forwarding state [ 57.096352][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 57.106108][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 57.124826][ T4207] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 57.136255][ T4207] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 57.150885][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 57.160030][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 57.169615][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 57.183800][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 57.298418][ T151] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 57.306740][ T151] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 57.321001][ T4207] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 57.342355][ T151] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 57.368132][ T151] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 57.378274][ T151] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 57.387581][ T151] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 57.397965][ T4207] device veth0_vlan entered promiscuous mode [ 57.412227][ T4207] device veth1_vlan entered promiscuous mode [ 57.439511][ T151] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 57.450057][ T151] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 57.462121][ T4207] device veth0_macvtap entered promiscuous mode [ 57.472905][ T4207] device veth1_macvtap entered promiscuous mode [ 57.502471][ T4207] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 57.510540][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 57.520015][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 57.528258][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 57.538810][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 57.551296][ T4207] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 57.561241][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 57.570486][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 57.583119][ T4207] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 57.594242][ T4207] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 57.604385][ T4207] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 57.613994][ T4207] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 57.997795][ T9] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 60.301779][ T9] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 62.711021][ T9] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 62.772268][ T9] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 63.078523][ T1397] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 63.096778][ T1397] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 63.141968][ T151] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 63.158196][ T1397] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 63.166804][ T1397] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 63.175107][ T151] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 63.831572][ T9] device hsr_slave_0 left promiscuous mode [ 63.846913][ T9] device hsr_slave_1 left promiscuous mode [ 63.859000][ T9] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 63.875482][ T9] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 63.886944][ T9] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 63.894371][ T9] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 63.921133][ T9] device bridge_slave_1 left promiscuous mode [ 63.933482][ T9] bridge0: port 2(bridge_slave_1) entered disabled state [ 63.950512][ T9] device bridge_slave_0 left promiscuous mode [ 63.956837][ T9] bridge0: port 1(bridge_slave_0) entered disabled state [ 63.988580][ T9] device veth1_macvtap left promiscuous mode [ 63.995034][ T9] device veth0_macvtap left promiscuous mode [ 64.001551][ T9] device veth1_vlan left promiscuous mode [ 64.007751][ T9] device veth0_vlan left promiscuous mode [ 64.198803][ T9] team0 (unregistering): Port device team_slave_1 removed [ 64.211488][ T9] team0 (unregistering): Port device team_slave_0 removed [ 64.223198][ T9] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 64.236177][ T9] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 64.282565][ T9] bond0 (unregistering): Released all slaves 2026/04/04 06:50:23 executed programs: 0 [ 66.082722][ T4364] chnl_net:caif_netlink_parms(): no params data found [ 66.169072][ T4364] bridge0: port 1(bridge_slave_0) entered blocking state [ 66.176525][ T4364] bridge0: port 1(bridge_slave_0) entered disabled state [ 66.184551][ T4364] device bridge_slave_0 entered promiscuous mode [ 66.203197][ T4364] bridge0: port 2(bridge_slave_1) entered blocking state [ 66.210462][ T4364] bridge0: port 2(bridge_slave_1) entered disabled state [ 66.219886][ T4364] device bridge_slave_1 entered promiscuous mode [ 66.244695][ T4364] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 66.256357][ T4364] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 66.280425][ T4364] team0: Port device team_slave_0 added [ 66.288353][ T4364] team0: Port device team_slave_1 added [ 66.307964][ T4364] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 66.314925][ T4364] 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. [ 66.340892][ T4364] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 66.354300][ T4364] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 66.361537][ T4364] 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. [ 66.387548][ T4364] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 66.419797][ T4364] device hsr_slave_0 entered promiscuous mode [ 66.426665][ T4364] device hsr_slave_1 entered promiscuous mode [ 67.247719][ T4364] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 67.257793][ T4364] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 67.269567][ T4364] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 67.279232][ T4364] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 67.341964][ T4364] 8021q: adding VLAN 0 to HW filter on device bond0 [ 67.357598][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 67.366024][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 67.376233][ T4364] 8021q: adding VLAN 0 to HW filter on device team0 [ 67.387278][ T151] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 67.397293][ T151] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 67.407918][ T151] bridge0: port 1(bridge_slave_0) entered blocking state [ 67.414996][ T151] bridge0: port 1(bridge_slave_0) entered forwarding state [ 67.460350][ T151] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 67.469074][ T151] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 67.479220][ T151] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 67.490472][ T151] bridge0: port 2(bridge_slave_1) entered blocking state [ 67.497751][ T151] bridge0: port 2(bridge_slave_1) entered forwarding state [ 67.517082][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 67.526408][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 67.536333][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 67.547538][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 67.566138][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 67.574255][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 67.583960][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 67.595702][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 67.604230][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 67.615005][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 67.623829][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 67.635562][ T4364] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 67.857831][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 67.867733][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 67.876498][ T2857] Bluetooth: hci0: command 0x0409 tx timeout [ 67.880406][ T4364] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 67.903006][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 67.913706][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 67.963658][ T4364] device veth0_vlan entered promiscuous mode [ 67.972542][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 67.982004][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 67.998378][ T4364] device veth1_vlan entered promiscuous mode [ 68.005250][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 68.016578][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 68.025670][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 68.048661][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 68.057677][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 68.066421][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 68.079376][ T4364] device veth0_macvtap entered promiscuous mode [ 68.124244][ T151] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 68.138087][ T4364] device veth1_macvtap entered promiscuous mode [ 68.198177][ T4364] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 68.209437][ T4364] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 68.218950][ T1397] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 68.229791][ T1397] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 68.239585][ T1397] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 68.249731][ T1397] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 68.260666][ T4364] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 68.269639][ T4364] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 68.280875][ T4364] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 68.291064][ T4364] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 68.367875][ T151] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 68.382923][ T151] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 68.403093][ T151] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 68.441959][ T151] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 68.457802][ T151] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 68.467651][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 68.542020][ T4497] [ 68.544387][ T4497] ====================================================== [ 68.551403][ T4497] WARNING: possible circular locking dependency detected [ 68.558441][ T4497] syzkaller #0 Not tainted [ 68.562856][ T4497] ------------------------------------------------------ [ 68.569969][ T4497] syz.0.17/4497 is trying to acquire lock: [ 68.575762][ T4497] ffff888079150c28 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}, at: __flush_work+0xfa/0x210 [ 68.586902][ T4497] [ 68.586902][ T4497] but task is already holding lock: [ 68.594248][ T4497] ffffffff8d6c51a8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x18b/0x560 [ 68.604005][ T4497] [ 68.604005][ T4497] which lock already depends on the new lock. [ 68.604005][ T4497] [ 68.614394][ T4497] [ 68.614394][ T4497] the existing dependency chain (in reverse order) is: [ 68.623392][ T4497] [ 68.623392][ T4497] -> #4 (rfkill_global_mutex){+.+.}-{3:3}: [ 68.631368][ T4497] __mutex_lock_common+0x1e3/0x2400 [ 68.637085][ T4497] mutex_lock_nested+0x17/0x20 [ 68.642357][ T4497] rfkill_register+0x33/0x8a0 [ 68.647532][ T4497] hci_register_dev+0x452/0x970 [ 68.652881][ T4497] vhci_create_device+0x32c/0x5c0 [ 68.658403][ T4497] vhci_write+0x391/0x450 [ 68.663229][ T4497] vfs_write+0x745/0xd60 [ 68.667993][ T4497] ksys_write+0x152/0x260 [ 68.672822][ T4497] do_syscall_64+0x4c/0xa0 [ 68.677764][ T4497] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 68.684167][ T4497] [ 68.684167][ T4497] -> #3 (&data->open_mutex){+.+.}-{3:3}: [ 68.691968][ T4497] __mutex_lock_common+0x1e3/0x2400 [ 68.697671][ T4497] mutex_lock_nested+0x17/0x20 [ 68.703129][ T4497] vhci_send_frame+0x88/0x100 [ 68.708415][ T4497] hci_send_frame+0x1a9/0x2e0 [ 68.713637][ T4497] hci_tx_work+0x9f9/0x1710 [ 68.718667][ T4497] process_one_work+0x85f/0x1010 [ 68.724124][ T4497] worker_thread+0xaa6/0x1290 [ 68.729304][ T4497] kthread+0x436/0x520 [ 68.733875][ T4497] ret_from_fork+0x1f/0x30 [ 68.738789][ T4497] [ 68.738789][ T4497] -> #2 ((work_completion)(&hdev->tx_work)){+.+.}-{0:0}: [ 68.747971][ T4497] __flush_work+0x116/0x210 [ 68.752983][ T4497] hci_dev_do_close+0x1e7/0x1030 [ 68.758418][ T4497] hci_unregister_dev+0x2d7/0x580 [ 68.763940][ T4497] vhci_release+0x73/0xc0 [ 68.768769][ T4497] __fput+0x234/0x930 [ 68.773257][ T4497] task_work_run+0x125/0x1a0 [ 68.778344][ T4497] do_exit+0x626/0x20c0 [ 68.782998][ T4497] do_group_exit+0x12e/0x300 [ 68.788080][ T4497] get_signal+0x6ca/0x12c0 [ 68.792992][ T4497] arch_do_signal_or_restart+0xe7/0x12c0 [ 68.799125][ T4497] exit_to_user_mode_loop+0x9e/0x130 [ 68.805343][ T4497] exit_to_user_mode_prepare+0xee/0x180 [ 68.811499][ T4497] syscall_exit_to_user_mode+0x16/0x40 [ 68.817492][ T4497] do_syscall_64+0x58/0xa0 [ 68.823100][ T4497] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 68.829489][ T4497] [ 68.829489][ T4497] -> #1 (&hdev->req_lock){+.+.}-{3:3}: [ 68.837104][ T4497] __mutex_lock_common+0x1e3/0x2400 [ 68.842804][ T4497] mutex_lock_nested+0x17/0x20 [ 68.848069][ T4497] bg_scan_update+0x44/0x3b0 [ 68.853255][ T4497] process_one_work+0x85f/0x1010 [ 68.858691][ T4497] worker_thread+0xaa6/0x1290 [ 68.863928][ T4497] kthread+0x436/0x520 [ 68.868493][ T4497] ret_from_fork+0x1f/0x30 [ 68.873407][ T4497] [ 68.873407][ T4497] -> #0 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}: [ 68.883189][ T4497] __lock_acquire+0x2c42/0x7d10 [ 68.888540][ T4497] lock_acquire+0x19e/0x400 [ 68.893556][ T4497] __flush_work+0x116/0x210 [ 68.898559][ T4497] __cancel_work_timer+0x3f4/0x560 [ 68.904169][ T4497] hci_request_cancel_all+0xcc/0x300 [ 68.910036][ T4497] hci_dev_do_close+0x4e/0x1030 [ 68.915388][ T4497] hci_rfkill_set_block+0x10a/0x190 [ 68.921104][ T4497] rfkill_set_block+0x1c6/0x420 [ 68.926555][ T4497] rfkill_fop_write+0x2e7/0x560 [ 68.931908][ T4497] vfs_write+0x30b/0xd60 [ 68.936648][ T4497] ksys_write+0x152/0x260 [ 68.941509][ T4497] do_syscall_64+0x4c/0xa0 [ 68.946422][ T4497] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 68.952817][ T4497] [ 68.952817][ T4497] other info that might help us debug this: [ 68.952817][ T4497] [ 68.963019][ T4497] Chain exists of: [ 68.963019][ T4497] (work_completion)(&hdev->bg_scan_update) --> &data->open_mutex --> rfkill_global_mutex [ 68.963019][ T4497] [ 68.978826][ T4497] Possible unsafe locking scenario: [ 68.978826][ T4497] [ 68.986263][ T4497] CPU0 CPU1 [ 68.991623][ T4497] ---- ---- [ 68.996974][ T4497] lock(rfkill_global_mutex); [ 69.001725][ T4497] lock(&data->open_mutex); [ 69.008817][ T4497] lock(rfkill_global_mutex); [ 69.016095][ T4497] lock((work_completion)(&hdev->bg_scan_update)); [ 69.022669][ T4497] [ 69.022669][ T4497] *** DEADLOCK *** [ 69.022669][ T4497] [ 69.030794][ T4497] 1 lock held by syz.0.17/4497: [ 69.035624][ T4497] #0: ffffffff8d6c51a8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x18b/0x560 [ 69.045916][ T4497] [ 69.045916][ T4497] stack backtrace: [ 69.051803][ T4497] CPU: 0 PID: 4497 Comm: syz.0.17 Not tainted syzkaller #0 [ 69.058988][ T4497] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026 [ 69.069049][ T4497] Call Trace: [ 69.072399][ T4497] [ 69.075310][ T4497] dump_stack_lvl+0x188/0x250 [ 69.079973][ T4497] ? load_image+0x400/0x400 [ 69.084493][ T4497] ? show_regs_print_info+0x20/0x20 [ 69.089673][ T4497] ? print_circular_bug+0x12b/0x1a0 [ 69.094852][ T4497] check_noncircular+0x296/0x330 [ 69.099775][ T4497] ? look_up_lock_class+0x71/0x110 [ 69.104965][ T4497] ? add_chain_block+0x940/0x940 [ 69.109894][ T4497] ? lockdep_lock+0xf1/0x1f0 [ 69.114475][ T4497] ? __lock_acquire+0x12e8/0x7d10 [ 69.119483][ T4497] ? mark_lock+0x94/0x320 [ 69.123791][ T4497] __lock_acquire+0x2c42/0x7d10 [ 69.128622][ T4497] ? verify_lock_unused+0x140/0x140 [ 69.133889][ T4497] ? mark_lock+0x94/0x320 [ 69.138195][ T4497] ? verify_lock_unused+0x140/0x140 [ 69.143487][ T4497] ? __lock_acquire+0x12e8/0x7d10 [ 69.148521][ T4497] lock_acquire+0x19e/0x400 [ 69.153067][ T4497] ? __flush_work+0xfa/0x210 [ 69.157640][ T4497] ? __lock_acquire+0x7d10/0x7d10 [ 69.162795][ T4497] ? read_lock_is_recursive+0x10/0x10 [ 69.168275][ T4497] ? start_flush_work+0x776/0x820 [ 69.173292][ T4497] __flush_work+0x116/0x210 [ 69.177777][ T4497] ? __flush_work+0xfa/0x210 [ 69.182342][ T4497] ? flush_work+0x20/0x20 [ 69.186652][ T4497] ? try_to_grab_pending+0xfa/0x7f0 [ 69.191825][ T4497] ? mark_lock+0x94/0x320 [ 69.196135][ T4497] ? lockdep_hardirqs_on_prepare+0x409/0x770 [ 69.202114][ T4497] ? lock_chain_count+0x20/0x20 [ 69.206952][ T4497] ? mark_lock+0x94/0x320 [ 69.211257][ T4497] ? __cancel_work_timer+0x36a/0x560 [ 69.216519][ T4497] __cancel_work_timer+0x3f4/0x560 [ 69.221608][ T4497] ? cancel_work_sync+0x20/0x20 [ 69.226432][ T4497] ? __cancel_work+0x1f9/0x2e0 [ 69.231179][ T4497] ? lockdep_hardirqs_on+0x94/0x140 [ 69.236373][ T4497] ? __cancel_work+0x27b/0x2e0 [ 69.241120][ T4497] ? cancel_work+0x20/0x20 [ 69.245520][ T4497] ? lock_chain_count+0x20/0x20 [ 69.250360][ T4497] hci_request_cancel_all+0xcc/0x300 [ 69.255628][ T4497] hci_dev_do_close+0x4e/0x1030 [ 69.260456][ T4497] ? _raw_spin_unlock_irqrestore+0xc1/0x120 [ 69.266323][ T4497] ? _raw_spin_unlock+0x40/0x40 [ 69.271149][ T4497] hci_rfkill_set_block+0x10a/0x190 [ 69.276326][ T4497] ? rcu_lock_release+0x20/0x20 [ 69.281152][ T4497] rfkill_set_block+0x1c6/0x420 [ 69.286017][ T4497] rfkill_fop_write+0x2e7/0x560 [ 69.290849][ T4497] ? rfkill_fop_read+0x4d0/0x4d0 [ 69.295765][ T4497] ? common_file_perm+0x110/0x1c0 [ 69.300765][ T4497] ? fsnotify_perm+0x5d/0x560 [ 69.305419][ T4497] ? security_file_permission+0x75/0xa0 [ 69.310950][ T4497] ? rfkill_fop_read+0x4d0/0x4d0 [ 69.315867][ T4497] vfs_write+0x30b/0xd60 [ 69.320093][ T4497] ? file_end_write+0x250/0x250 [ 69.324926][ T4497] ? __context_tracking_exit+0x4c/0x80 [ 69.330385][ T4497] ? __lock_acquire+0x7d10/0x7d10 [ 69.335421][ T4497] ? __fdget_pos+0x1e2/0x370 [ 69.339991][ T4497] ksys_write+0x152/0x260 [ 69.344297][ T4497] ? __ia32_sys_read+0x80/0x80 [ 69.349139][ T4497] ? lockdep_hardirqs_on+0x94/0x140 [ 69.354336][ T4497] do_syscall_64+0x4c/0xa0 [ 69.358738][ T4497] ? clear_bhb_loop+0x30/0x80 [ 69.363399][ T4497] ? clear_bhb_loop+0x30/0x80 [ 69.368054][ T4497] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 69.374022][ T4497] RIP: 0033:0x7fd1d1251819 [ 69.378416][ T4497] 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 [ 69.397998][ T4497] RSP: 002b:00007ffca0144178 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 69.406515][ T4497] RAX: ffffffffffffffda RBX: 00007fd1d14cafa0 RCX: 00007fd1d1251819 [ 69.414479][ T4497] RDX: 0000000000000008 RSI: 0000200000000100 RDI: 0000000000000003 [ 69.422445][ T4497] RBP: 00007fd1d12e7c91 R08: 0000000000000000 R09: 0000000000000000 [ 69.430397][ T4497] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 69.438345][ T4497] R13: 00007fd1d14cafac R14: 00007fd1d14cafa0 R15: 00007fd1d14cafa0 [ 69.446301][ T4497]