Warning: Permanently added '10.128.1.101' (ED25519) to the list of known hosts. 2026/08/19 06:53:12 parsed 1 programs 2026/08/19 06:53:12 serving rpc on tcp://38581 [ 66.572101][ T4198] cgroup: Unknown subsys name 'net' [ 66.720983][ T4198] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size = 127995904 bytes [ 68.280212][ T4198] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k FS [ 70.524120][ T412] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 70.535899][ T412] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 70.560525][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 70.573348][ T4229] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 70.581811][ T4229] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 70.589928][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 71.299259][ T1421] ieee802154 phy0 wpan0: encryption failed: -22 [ 71.305865][ T1421] ieee802154 phy1 wpan1: encryption failed: -22 [ 71.667176][ T4247] chnl_net:caif_netlink_parms(): no params data found [ 71.723133][ T4247] bridge0: port 1(bridge_slave_0) entered blocking state [ 71.730681][ T4247] bridge0: port 1(bridge_slave_0) entered disabled state [ 71.738543][ T4247] device bridge_slave_0 entered promiscuous mode [ 71.748268][ T4247] bridge0: port 2(bridge_slave_1) entered blocking state [ 71.755683][ T4247] bridge0: port 2(bridge_slave_1) entered disabled state [ 71.763713][ T4247] device bridge_slave_1 entered promiscuous mode [ 71.788776][ T4247] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 71.803793][ T4247] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 71.838503][ T4247] team0: Port device team_slave_0 added [ 71.846880][ T4247] team0: Port device team_slave_1 added [ 71.869095][ T4247] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 71.876442][ T4247] 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. [ 71.902731][ T4247] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 71.915499][ T4247] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 71.922470][ T4247] 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. [ 71.948495][ T4247] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 71.977606][ T4247] device hsr_slave_0 entered promiscuous mode [ 71.984669][ T4247] device hsr_slave_1 entered promiscuous mode [ 72.153701][ T4247] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 72.178926][ T4247] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 72.194832][ T4247] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 72.205315][ T4247] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 72.232886][ T4247] bridge0: port 2(bridge_slave_1) entered blocking state [ 72.240091][ T4247] bridge0: port 2(bridge_slave_1) entered forwarding state [ 72.247972][ T4247] bridge0: port 1(bridge_slave_0) entered blocking state [ 72.255025][ T4247] bridge0: port 1(bridge_slave_0) entered forwarding state [ 72.293216][ T4247] 8021q: adding VLAN 0 to HW filter on device bond0 [ 72.307892][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 72.317371][ T9] bridge0: port 1(bridge_slave_0) entered disabled state [ 72.325316][ T9] bridge0: port 2(bridge_slave_1) entered disabled state [ 72.338335][ T4247] 8021q: adding VLAN 0 to HW filter on device team0 [ 72.349588][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 72.358148][ T9] bridge0: port 1(bridge_slave_0) entered blocking state [ 72.365196][ T9] bridge0: port 1(bridge_slave_0) entered forwarding state [ 72.376369][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 72.384933][ T144] bridge0: port 2(bridge_slave_1) entered blocking state [ 72.392144][ T144] bridge0: port 2(bridge_slave_1) entered forwarding state [ 72.410788][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 72.419618][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 72.432377][ T4229] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 72.443690][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 72.456826][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 72.469511][ T4247] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 72.575736][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 72.583239][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 72.596043][ T4247] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 72.612829][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 72.621650][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 72.653644][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 72.662922][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 72.671868][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 72.679851][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 72.702688][ T4247] device veth0_vlan entered promiscuous mode [ 72.714241][ T4247] device veth1_vlan entered promiscuous mode [ 72.732830][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 72.741710][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 72.750071][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 72.758723][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 72.787721][ T4247] device veth0_macvtap entered promiscuous mode [ 72.799013][ T4247] device veth1_macvtap entered promiscuous mode [ 72.813920][ T4247] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 72.821822][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 72.831898][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 72.839947][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 72.849799][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 72.862209][ T4247] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 72.870908][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 72.880258][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 72.890933][ T4247] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 72.900045][ T4247] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 72.909028][ T4247] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 72.918020][ T4247] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 73.040011][ T4247] syz-executor (4247) used greatest stack depth: 20464 bytes left 2026/08/19 06:53:22 executed programs: 0 [ 74.214550][ T4303] chnl_net:caif_netlink_parms(): no params data found [ 74.278673][ T4303] bridge0: port 1(bridge_slave_0) entered blocking state [ 74.287443][ T4303] bridge0: port 1(bridge_slave_0) entered disabled state [ 74.298695][ T4303] device bridge_slave_0 entered promiscuous mode [ 74.309241][ T4303] bridge0: port 2(bridge_slave_1) entered blocking state [ 74.317982][ T4303] bridge0: port 2(bridge_slave_1) entered disabled state [ 74.328050][ T4303] device bridge_slave_1 entered promiscuous mode [ 74.361150][ T4303] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 74.374316][ T4303] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 74.408565][ T4303] team0: Port device team_slave_0 added [ 74.418837][ T4303] team0: Port device team_slave_1 added [ 74.444807][ T4303] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 74.453233][ T4303] 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. [ 74.482641][ T4303] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 74.498748][ T4303] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 74.505900][ T4303] 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. [ 74.535964][ T4303] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 74.581264][ T4303] device hsr_slave_0 entered promiscuous mode [ 74.590983][ T4303] device hsr_slave_1 entered promiscuous mode [ 74.597893][ T4303] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 74.606066][ T4303] Cannot create hsr debugfs directory [ 74.714763][ T4303] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 76.096108][ T23] Bluetooth: hci0: command 0x0409 tx timeout [ 77.781973][ T4303] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 77.852479][ T4303] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 77.903255][ T4303] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 78.020206][ T4303] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 78.029660][ T4303] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 78.039301][ T4303] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 78.049252][ T4303] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 78.100828][ T4303] 8021q: adding VLAN 0 to HW filter on device bond0 [ 78.126451][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 78.134415][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 78.144053][ T4303] 8021q: adding VLAN 0 to HW filter on device team0 [ 78.153187][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 78.163298][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 78.172366][ T9] bridge0: port 1(bridge_slave_0) entered blocking state [ 78.179487][ T9] bridge0: port 1(bridge_slave_0) entered forwarding state [ 78.186344][ T4265] Bluetooth: hci0: command 0x041b tx timeout [ 78.188760][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 78.203739][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 78.212469][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 78.220847][ T9] bridge0: port 2(bridge_slave_1) entered blocking state [ 78.227930][ T9] bridge0: port 2(bridge_slave_1) entered forwarding state [ 78.255039][ T412] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 78.267345][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 78.279136][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 78.288330][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 78.298019][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 78.323495][ T412] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 78.332929][ T412] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 78.343972][ T412] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 78.355240][ T412] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 78.367813][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 78.376547][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 78.401197][ T4303] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 78.490644][ T412] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 78.498725][ T412] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 78.513017][ T154] device hsr_slave_0 left promiscuous mode [ 78.520012][ T154] device hsr_slave_1 left promiscuous mode [ 78.529027][ T154] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 78.537281][ T154] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 78.546766][ T154] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 78.554188][ T154] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 78.562022][ T154] device bridge_slave_1 left promiscuous mode [ 78.569279][ T154] bridge0: port 2(bridge_slave_1) entered disabled state [ 78.581125][ T154] device bridge_slave_0 left promiscuous mode [ 78.588444][ T154] bridge0: port 1(bridge_slave_0) entered disabled state [ 78.604132][ T154] device veth1_macvtap left promiscuous mode [ 78.610555][ T154] device veth0_macvtap left promiscuous mode [ 78.616694][ T154] device veth1_vlan left promiscuous mode [ 78.622543][ T154] device veth0_vlan left promiscuous mode [ 78.772486][ T154] team0 (unregistering): Port device team_slave_1 removed [ 78.785469][ T154] team0 (unregistering): Port device team_slave_0 removed [ 78.801039][ T154] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 78.813899][ T154] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 78.871302][ T154] bond0 (unregistering): Released all slaves [ 78.933189][ T4303] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 78.952414][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 78.961118][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 78.980972][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 78.992447][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 79.001121][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 79.010025][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 79.021250][ T4303] device veth0_vlan entered promiscuous mode [ 79.035015][ T4303] device veth1_vlan entered promiscuous mode [ 79.056000][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 79.064037][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 79.072377][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 79.080951][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 79.092440][ T4303] device veth0_macvtap entered promiscuous mode [ 79.105798][ T4303] device veth1_macvtap entered promiscuous mode [ 79.124535][ T4303] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 79.132420][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 79.140765][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 79.148823][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 79.157619][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 79.170205][ T4303] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 79.179777][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 79.188585][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 79.198798][ T4303] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 79.208847][ T4303] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 79.218220][ T4303] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 79.227212][ T4303] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 79.276525][ T144] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 79.284391][ T144] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 79.294997][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 79.322003][ T412] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 79.329916][ T412] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 79.338045][ T412] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 79.447921][ T4315] [ 79.450304][ T4315] ====================================================== [ 79.457335][ T4315] WARNING: possible circular locking dependency detected [ 79.464371][ T4315] syzkaller #0 Not tainted [ 79.468801][ T4315] ------------------------------------------------------ [ 79.475838][ T4315] syz.0.17/4315 is trying to acquire lock: [ 79.481660][ T4315] ffff88807ef65028 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}, at: __flush_work+0xfa/0x210 [ 79.492744][ T4315] [ 79.492744][ T4315] but task is already holding lock: [ 79.500128][ T4315] ffffffff8d6d5ea8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x1ae/0x560 [ 79.509832][ T4315] [ 79.509832][ T4315] which lock already depends on the new lock. [ 79.509832][ T4315] [ 79.520255][ T4315] [ 79.520255][ T4315] the existing dependency chain (in reverse order) is: [ 79.529285][ T4315] [ 79.529285][ T4315] -> #4 (rfkill_global_mutex){+.+.}-{3:3}: [ 79.537395][ T4315] __mutex_lock_common+0x1e5/0x2400 [ 79.543148][ T4315] mutex_lock_nested+0x17/0x20 [ 79.548466][ T4315] rfkill_register+0x2f/0x970 [ 79.553697][ T4315] hci_register_dev+0x459/0x980 [ 79.559082][ T4315] vhci_create_device+0x32e/0x5c0 [ 79.564651][ T4315] vhci_write+0x389/0x440 [ 79.569529][ T4315] vfs_write+0x748/0xd70 [ 79.574315][ T4315] ksys_write+0x153/0x260 [ 79.579186][ T4315] do_syscall_64+0x4c/0xa0 [ 79.584144][ T4315] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 79.590576][ T4315] [ 79.590576][ T4315] -> #3 (&data->open_mutex){+.+.}-{3:3}: [ 79.598421][ T4315] __mutex_lock_common+0x1e5/0x2400 [ 79.604181][ T4315] mutex_lock_nested+0x17/0x20 [ 79.609507][ T4315] vhci_send_frame+0x88/0x100 [ 79.614814][ T4315] hci_send_frame+0x1a9/0x2e0 [ 79.620029][ T4315] hci_tx_work+0x9b5/0x16d0 [ 79.625071][ T4315] process_one_work+0x867/0xff0 [ 79.630459][ T4315] worker_thread+0xad7/0x12a0 [ 79.635699][ T4315] kthread+0x42e/0x520 [ 79.640308][ T4315] ret_from_fork+0x1f/0x30 [ 79.645265][ T4315] [ 79.645265][ T4315] -> #2 ((work_completion)(&hdev->tx_work)){+.+.}-{0:0}: [ 79.654489][ T4315] __flush_work+0x116/0x210 [ 79.659555][ T4315] hci_dev_do_close+0x201/0x1020 [ 79.665043][ T4315] hci_unregister_dev+0x2eb/0x590 [ 79.670613][ T4315] vhci_release+0x73/0xc0 [ 79.675488][ T4315] __fput+0x212/0x8c0 [ 79.680006][ T4315] task_work_run+0x125/0x1a0 [ 79.685142][ T4315] do_exit+0x635/0x2110 [ 79.689838][ T4315] do_group_exit+0x12c/0x2f0 [ 79.694973][ T4315] get_signal+0x7eb/0x12e0 [ 79.699926][ T4315] arch_do_signal_or_restart+0xe6/0x12a0 [ 79.706101][ T4315] exit_to_user_mode_loop+0x9e/0x130 [ 79.712360][ T4315] exit_to_user_mode_prepare+0xee/0x180 [ 79.718456][ T4315] syscall_exit_to_user_mode+0x16/0x40 [ 79.724473][ T4315] do_syscall_64+0x58/0xa0 [ 79.729443][ T4315] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 79.735889][ T4315] [ 79.735889][ T4315] -> #1 (&hdev->req_lock){+.+.}-{3:3}: [ 79.743553][ T4315] __mutex_lock_common+0x1e5/0x2400 [ 79.749302][ T4315] mutex_lock_nested+0x17/0x20 [ 79.754608][ T4315] bg_scan_update+0x44/0x3b0 [ 79.759742][ T4315] process_one_work+0x867/0xff0 [ 79.765135][ T4315] worker_thread+0xad7/0x12a0 [ 79.770345][ T4315] kthread+0x42e/0x520 [ 79.774954][ T4315] ret_from_fork+0x1f/0x30 [ 79.779910][ T4315] [ 79.779910][ T4315] -> #0 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}: [ 79.789745][ T4315] __lock_acquire+0x2c66/0x7b50 [ 79.795149][ T4315] lock_acquire+0x19e/0x400 [ 79.800200][ T4315] __flush_work+0x116/0x210 [ 79.805247][ T4315] __cancel_work_timer+0x3f4/0x560 [ 79.810907][ T4315] hci_request_cancel_all+0xcc/0x300 [ 79.816739][ T4315] hci_dev_do_close+0x4e/0x1020 [ 79.822135][ T4315] hci_rfkill_set_block+0x101/0x180 [ 79.827877][ T4315] rfkill_set_block+0x1c1/0x3c0 [ 79.833268][ T4315] rfkill_fop_write+0x453/0x560 [ 79.838663][ T4315] vfs_write+0x304/0xd70 [ 79.843454][ T4315] ksys_write+0x153/0x260 [ 79.848328][ T4315] do_syscall_64+0x4c/0xa0 [ 79.853286][ T4315] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 79.859724][ T4315] [ 79.859724][ T4315] other info that might help us debug this: [ 79.859724][ T4315] [ 79.870053][ T4315] Chain exists of: [ 79.870053][ T4315] (work_completion)(&hdev->bg_scan_update) --> &data->open_mutex --> rfkill_global_mutex [ 79.870053][ T4315] [ 79.885824][ T4315] Possible unsafe locking scenario: [ 79.885824][ T4315] [ 79.893286][ T4315] CPU0 CPU1 [ 79.898668][ T4315] ---- ---- [ 79.904050][ T4315] lock(rfkill_global_mutex); [ 79.908835][ T4315] lock(&data->open_mutex); [ 79.915965][ T4315] lock(rfkill_global_mutex); [ 79.923270][ T4315] lock((work_completion)(&hdev->bg_scan_update)); [ 79.929879][ T4315] [ 79.929879][ T4315] *** DEADLOCK *** [ 79.929879][ T4315] [ 79.938035][ T4315] 1 lock held by syz.0.17/4315: [ 79.942906][ T4315] #0: ffffffff8d6d5ea8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x1ae/0x560 [ 79.953035][ T4315] [ 79.953035][ T4315] stack backtrace: [ 79.958925][ T4315] CPU: 1 PID: 4315 Comm: syz.0.17 Not tainted syzkaller #0 [ 79.966120][ T4315] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 [ 79.976172][ T4315] Call Trace: [ 79.979452][ T4315] [ 79.982383][ T4315] dump_stack_lvl+0x188/0x250 [ 79.987067][ T4315] ? load_image+0x410/0x410 [ 79.991576][ T4315] ? show_regs_print_info+0x20/0x20 [ 79.996780][ T4315] ? print_circular_bug+0x12b/0x1a0 [ 80.001981][ T4315] check_noncircular+0x296/0x330 [ 80.006920][ T4315] ? look_up_lock_class+0x71/0x110 [ 80.012031][ T4315] ? add_chain_block+0x9b0/0x9b0 [ 80.016963][ T4315] ? lockdep_lock+0xf1/0x1f0 [ 80.021559][ T4315] ? __lock_acquire+0x1305/0x7b50 [ 80.026582][ T4315] ? mark_lock+0x94/0x320 [ 80.030906][ T4315] ? _find_first_zero_bit+0xd1/0xf0 [ 80.036102][ T4315] __lock_acquire+0x2c66/0x7b50 [ 80.040958][ T4315] ? verify_lock_unused+0x140/0x140 [ 80.046187][ T4315] ? verify_lock_unused+0x140/0x140 [ 80.051393][ T4315] lock_acquire+0x19e/0x400 [ 80.055899][ T4315] ? __flush_work+0xfa/0x210 [ 80.060500][ T4315] ? __lock_acquire+0x7b50/0x7b50 [ 80.065528][ T4315] ? read_lock_is_recursive+0x10/0x10 [ 80.070901][ T4315] ? start_flush_work+0x784/0x830 [ 80.075925][ T4315] __flush_work+0x116/0x210 [ 80.080425][ T4315] ? __flush_work+0xfa/0x210 [ 80.085022][ T4315] ? flush_work+0x20/0x20 [ 80.089346][ T4315] ? try_to_grab_pending+0xfb/0x820 [ 80.094542][ T4315] ? mark_lock+0x94/0x320 [ 80.098868][ T4315] ? lockdep_hardirqs_on_prepare+0x448/0x7c0 [ 80.104934][ T4315] ? lock_chain_count+0x20/0x20 [ 80.109798][ T4315] ? mark_lock+0x94/0x320 [ 80.114128][ T4315] ? __cancel_work_timer+0x36a/0x560 [ 80.119410][ T4315] __cancel_work_timer+0x3f4/0x560 [ 80.124519][ T4315] ? cancel_work_sync+0x20/0x20 [ 80.129366][ T4315] ? __cancel_work+0x1f9/0x2e0 [ 80.134127][ T4315] ? lockdep_hardirqs_on+0x94/0x140 [ 80.139323][ T4315] ? __cancel_work+0x27b/0x2e0 [ 80.144092][ T4315] ? cancel_work+0x20/0x20 [ 80.148596][ T4315] hci_request_cancel_all+0xcc/0x300 [ 80.153883][ T4315] hci_dev_do_close+0x4e/0x1020 [ 80.158736][ T4315] ? _raw_spin_unlock_irqrestore+0xc1/0x120 [ 80.164625][ T4315] ? _raw_spin_unlock+0x40/0x40 [ 80.169478][ T4315] hci_rfkill_set_block+0x101/0x180 [ 80.174675][ T4315] ? rcu_lock_release+0x20/0x20 [ 80.179526][ T4315] rfkill_set_block+0x1c1/0x3c0 [ 80.184376][ T4315] rfkill_fop_write+0x453/0x560 [ 80.189229][ T4315] ? rfkill_fop_read+0x560/0x560 [ 80.194162][ T4315] ? common_file_perm+0x100/0x1c0 [ 80.199269][ T4315] ? fsnotify_perm+0x5d/0x560 [ 80.203947][ T4315] ? security_file_permission+0x75/0xa0 [ 80.209497][ T4315] ? rfkill_fop_read+0x560/0x560 [ 80.214433][ T4315] vfs_write+0x304/0xd70 [ 80.218678][ T4315] ? file_end_write+0x250/0x250 [ 80.223531][ T4315] ? __context_tracking_exit+0x4c/0x80 [ 80.228991][ T4315] ? __fdget_pos+0x1e2/0x370 [ 80.233582][ T4315] ksys_write+0x153/0x260 [ 80.237908][ T4315] ? __ia32_sys_read+0x80/0x80 [ 80.242669][ T4315] ? lockdep_hardirqs_on+0x94/0x140 [ 80.247866][ T4315] do_syscall_64+0x4c/0xa0 [ 80.252278][ T4315] ? clear_bhb_loop+0x30/0x80 [ 80.256950][ T4315] ? clear_bhb_loop+0x30/0x80 [ 80.261682][ T4315] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 80.267574][ T4315] RIP: 0033:0x7f01e1f9e0d9 [ 80.271997][ T4315] 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 [ 80.291607][ T4315] RSP: 002b:00007ffd5296dd58 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 80.300021][ T4315] RAX: ffffffffffffffda RBX: 00007f01e2225fa0 RCX: 00007f01e1f9e0d9 [ 80.307992][ T4315] RDX: 0000000000000008 RSI: 0000200000000000 RDI: 0000000000000003 [ 80.315965][ T4315] RBP: 00007f01e2035024 R08: 0000000000000000 R09: 0000000000000000 [ 80.323938][ T4315] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 80.331904][ T4315] R13: 00007f01e2225fac R14: 00007f01e2225fa0 R15: 00007f01e2225fa0 [ 80.339876][ T4315] [ 80.347781][ T4265] Bluetooth: hci0: command 0x040f tx timeout