Warning: Permanently added '10.128.1.44' (ED25519) to the list of known hosts. 2026/04/11 20:52:00 parsed 1 programs [ 71.600452][ T4189] cgroup: Unknown subsys name 'net' [ 71.802137][ T4189] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size = 127995904 bytes [ 73.353879][ T4189] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k FS [ 75.494389][ T1268] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 75.508878][ T1268] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 75.519309][ T1170] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 75.545448][ T1170] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 75.554264][ T1170] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 75.562904][ T1268] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 76.373179][ T4246] chnl_net:caif_netlink_parms(): no params data found [ 76.444288][ T4246] bridge0: port 1(bridge_slave_0) entered blocking state [ 76.453972][ T4246] bridge0: port 1(bridge_slave_0) entered disabled state [ 76.462547][ T4246] device bridge_slave_0 entered promiscuous mode [ 76.474126][ T4246] bridge0: port 2(bridge_slave_1) entered blocking state [ 76.481358][ T4246] bridge0: port 2(bridge_slave_1) entered disabled state [ 76.491248][ T4246] device bridge_slave_1 entered promiscuous mode [ 76.520889][ T4246] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 76.533026][ T4246] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 76.563100][ T4246] team0: Port device team_slave_0 added [ 76.572075][ T4246] team0: Port device team_slave_1 added [ 76.595008][ T4246] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 76.602178][ T4246] 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. [ 76.628949][ T4246] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 76.642232][ T4246] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 76.649437][ T4246] 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. [ 76.675641][ T4246] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 76.716013][ T4246] device hsr_slave_0 entered promiscuous mode [ 76.723025][ T4246] device hsr_slave_1 entered promiscuous mode [ 76.860995][ T4246] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 76.873484][ T4246] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 76.884569][ T4246] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 76.894791][ T4246] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 76.923155][ T4246] bridge0: port 2(bridge_slave_1) entered blocking state [ 76.930409][ T4246] bridge0: port 2(bridge_slave_1) entered forwarding state [ 76.938775][ T4246] bridge0: port 1(bridge_slave_0) entered blocking state [ 76.945942][ T4246] bridge0: port 1(bridge_slave_0) entered forwarding state [ 77.006922][ T4246] 8021q: adding VLAN 0 to HW filter on device bond0 [ 77.021990][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 77.115367][ T9] bridge0: port 1(bridge_slave_0) entered disabled state [ 77.126202][ T9] bridge0: port 2(bridge_slave_1) entered disabled state [ 77.139202][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 77.177892][ T4246] 8021q: adding VLAN 0 to HW filter on device team0 [ 77.199754][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 77.208633][ T9] bridge0: port 1(bridge_slave_0) entered blocking state [ 77.215785][ T9] bridge0: port 1(bridge_slave_0) entered forwarding state [ 77.238993][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 77.248373][ T9] bridge0: port 2(bridge_slave_1) entered blocking state [ 77.255712][ T9] bridge0: port 2(bridge_slave_1) entered forwarding state [ 77.269691][ T1211] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 77.278853][ T1211] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 77.291401][ T1211] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 77.304870][ T1211] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 77.318117][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 77.330689][ T4246] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 77.422167][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 77.429938][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 77.442569][ T4246] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 77.463407][ T1268] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 77.472441][ T1268] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 77.496645][ T1268] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 77.506513][ T1268] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 77.515177][ T1268] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 77.523305][ T1268] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 77.533785][ T4246] device veth0_vlan entered promiscuous mode [ 77.547215][ T4246] device veth1_vlan entered promiscuous mode [ 77.589662][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 77.598866][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 77.607650][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 77.616719][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 77.627293][ T4246] device veth0_macvtap entered promiscuous mode [ 77.637866][ T4246] device veth1_macvtap entered promiscuous mode [ 77.675252][ T4246] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 77.683101][ T1268] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 77.691217][ T1268] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 77.699550][ T1268] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 77.709093][ T1268] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 77.721641][ T4246] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 77.733565][ T1268] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 77.742554][ T1268] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 77.772726][ T4246] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 77.781812][ T4246] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 77.790928][ T4246] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 77.799698][ T4246] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 77.933504][ T4246] syz-executor (4246) used greatest stack depth: 21072 bytes left 2026/04/11 20:52:11 executed programs: 0 [ 79.948866][ T4296] chnl_net:caif_netlink_parms(): no params data found [ 80.011018][ T4296] bridge0: port 1(bridge_slave_0) entered blocking state [ 80.018285][ T4296] bridge0: port 1(bridge_slave_0) entered disabled state [ 80.026867][ T4296] device bridge_slave_0 entered promiscuous mode [ 80.035480][ T4296] bridge0: port 2(bridge_slave_1) entered blocking state [ 80.043003][ T4296] bridge0: port 2(bridge_slave_1) entered disabled state [ 80.053298][ T4296] device bridge_slave_1 entered promiscuous mode [ 80.077974][ T4296] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 80.089749][ T4296] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 80.115364][ T4296] team0: Port device team_slave_0 added [ 80.124063][ T4296] team0: Port device team_slave_1 added [ 80.144427][ T4296] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 80.151567][ T4296] 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. [ 80.177992][ T4296] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 80.190983][ T4296] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 80.201162][ T4296] 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. [ 80.228802][ T4296] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 80.267003][ T4296] device hsr_slave_0 entered promiscuous mode [ 80.273949][ T4296] device hsr_slave_1 entered promiscuous mode [ 80.281317][ T4296] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 80.290225][ T4296] Cannot create hsr debugfs directory [ 80.381653][ T4296] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 81.886434][ T4265] Bluetooth: hci0: command 0x0409 tx timeout [ 83.032762][ T4296] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 83.111547][ T4296] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 83.183885][ T4296] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 83.300569][ T4296] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 83.309867][ T4296] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 83.319773][ T4296] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 83.330474][ T4296] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 83.415453][ T4296] 8021q: adding VLAN 0 to HW filter on device bond0 [ 83.438150][ T1268] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 83.446206][ T1268] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 83.456154][ T4296] 8021q: adding VLAN 0 to HW filter on device team0 [ 83.465450][ T1268] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 83.475271][ T1268] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 83.483937][ T1268] bridge0: port 1(bridge_slave_0) entered blocking state [ 83.491152][ T1268] bridge0: port 1(bridge_slave_0) entered forwarding state [ 83.500220][ T1268] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 83.523449][ T1268] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 83.532571][ T1268] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 83.541935][ T1268] bridge0: port 2(bridge_slave_1) entered blocking state [ 83.549038][ T1268] bridge0: port 2(bridge_slave_1) entered forwarding state [ 83.561142][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 83.573810][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 83.605203][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 83.614380][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 83.623106][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 83.633996][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 83.643054][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 83.671297][ T1268] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 83.680753][ T1268] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 83.693091][ T1268] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 83.701821][ T1268] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 83.729714][ T4296] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 83.815444][ T1170] device hsr_slave_0 left promiscuous mode [ 83.822531][ T1170] device hsr_slave_1 left promiscuous mode [ 83.829699][ T1170] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 83.837552][ T1170] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 83.847016][ T1170] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 83.854567][ T1170] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 83.862837][ T1170] device bridge_slave_1 left promiscuous mode [ 83.871122][ T1170] bridge0: port 2(bridge_slave_1) entered disabled state [ 83.887899][ T1170] device bridge_slave_0 left promiscuous mode [ 83.894150][ T1170] bridge0: port 1(bridge_slave_0) entered disabled state [ 83.914520][ T1170] device veth1_macvtap left promiscuous mode [ 83.921027][ T1170] device veth0_macvtap left promiscuous mode [ 83.927484][ T1170] device veth1_vlan left promiscuous mode [ 83.933424][ T1170] device veth0_vlan left promiscuous mode [ 83.965744][ T4265] Bluetooth: hci0: command 0x041b tx timeout [ 84.116762][ T1170] team0 (unregistering): Port device team_slave_1 removed [ 84.131165][ T1170] team0 (unregistering): Port device team_slave_0 removed [ 84.144635][ T1170] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 84.159547][ T1170] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 84.219912][ T1170] bond0 (unregistering): Released all slaves [ 84.308404][ T1268] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 84.316319][ T1268] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 84.327994][ T4296] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 84.346954][ T1268] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 84.359439][ T1268] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 84.381118][ T1268] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 84.390796][ T1268] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 84.405123][ T4296] device veth0_vlan entered promiscuous mode [ 84.412152][ T1268] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 84.429033][ T1268] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 84.442136][ T4296] device veth1_vlan entered promiscuous mode [ 84.464662][ T1211] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 84.473824][ T1211] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 84.485762][ T4296] device veth0_macvtap entered promiscuous mode [ 84.494750][ T4296] device veth1_macvtap entered promiscuous mode [ 84.514755][ T4296] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 84.530766][ T1268] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 84.540319][ T1268] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 84.548683][ T1268] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 84.557862][ T1268] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 84.570299][ T4296] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 84.579502][ T1268] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 84.588332][ T1268] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 84.600305][ T4296] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 84.609679][ T4296] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 84.621004][ T4296] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 84.630088][ T4296] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 84.695320][ T144] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 84.707428][ T144] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 84.718304][ T1268] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 84.742361][ T144] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 84.750535][ T144] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 84.759057][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 84.919309][ T4317] [ 84.921811][ T4317] ====================================================== [ 84.928857][ T4317] WARNING: possible circular locking dependency detected [ 84.936001][ T4317] syzkaller #0 Not tainted [ 84.940442][ T4317] ------------------------------------------------------ [ 84.947505][ T4317] syz.0.17/4317 is trying to acquire lock: [ 84.953325][ T4317] ffff888025fc0c28 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}, at: __flush_work+0xfa/0x210 [ 84.964427][ T4317] [ 84.964427][ T4317] but task is already holding lock: [ 84.971891][ T4317] ffffffff8d6c51a8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x18b/0x560 [ 84.981680][ T4317] [ 84.981680][ T4317] which lock already depends on the new lock. [ 84.981680][ T4317] [ 84.992341][ T4317] [ 84.992341][ T4317] the existing dependency chain (in reverse order) is: [ 85.001374][ T4317] [ 85.001374][ T4317] -> #4 (rfkill_global_mutex){+.+.}-{3:3}: [ 85.009394][ T4317] __mutex_lock_common+0x1e3/0x2400 [ 85.015181][ T4317] mutex_lock_nested+0x17/0x20 [ 85.020495][ T4317] rfkill_register+0x33/0x8a0 [ 85.025730][ T4317] hci_register_dev+0x452/0x970 [ 85.031134][ T4317] vhci_create_device+0x32c/0x5c0 [ 85.037151][ T4317] vhci_write+0x391/0x450 [ 85.042033][ T4317] vfs_write+0x745/0xd60 [ 85.046840][ T4317] ksys_write+0x152/0x260 [ 85.051720][ T4317] do_syscall_64+0x4c/0xa0 [ 85.056697][ T4317] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 85.063142][ T4317] [ 85.063142][ T4317] -> #3 (&data->open_mutex){+.+.}-{3:3}: [ 85.071005][ T4317] __mutex_lock_common+0x1e3/0x2400 [ 85.076754][ T4317] mutex_lock_nested+0x17/0x20 [ 85.082162][ T4317] vhci_send_frame+0x88/0x100 [ 85.087585][ T4317] hci_send_frame+0x1a9/0x2e0 [ 85.092896][ T4317] hci_tx_work+0x9f9/0x1710 [ 85.097961][ T4317] process_one_work+0x85f/0x1010 [ 85.103704][ T4317] worker_thread+0xaa6/0x1290 [ 85.108932][ T4317] kthread+0x436/0x520 [ 85.113543][ T4317] ret_from_fork+0x1f/0x30 [ 85.118507][ T4317] [ 85.118507][ T4317] -> #2 ((work_completion)(&hdev->tx_work)){+.+.}-{0:0}: [ 85.127840][ T4317] __flush_work+0x116/0x210 [ 85.132894][ T4317] hci_dev_do_close+0x1e7/0x1030 [ 85.138379][ T4317] hci_unregister_dev+0x2d7/0x580 [ 85.143977][ T4317] vhci_release+0x73/0xc0 [ 85.148865][ T4317] __fput+0x234/0x930 [ 85.153542][ T4317] task_work_run+0x125/0x1a0 [ 85.158693][ T4317] do_exit+0x626/0x20c0 [ 85.163398][ T4317] do_group_exit+0x12e/0x300 [ 85.168543][ T4317] get_signal+0x6ca/0x12c0 [ 85.173519][ T4317] arch_do_signal_or_restart+0xe7/0x12c0 [ 85.179717][ T4317] exit_to_user_mode_loop+0x9e/0x130 [ 85.185557][ T4317] exit_to_user_mode_prepare+0xee/0x180 [ 85.191657][ T4317] syscall_exit_to_user_mode+0x16/0x40 [ 85.197848][ T4317] do_syscall_64+0x58/0xa0 [ 85.202814][ T4317] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 85.209347][ T4317] [ 85.209347][ T4317] -> #1 (&hdev->req_lock){+.+.}-{3:3}: [ 85.217115][ T4317] __mutex_lock_common+0x1e3/0x2400 [ 85.222866][ T4317] mutex_lock_nested+0x17/0x20 [ 85.228182][ T4317] bg_scan_update+0x44/0x3b0 [ 85.233326][ T4317] process_one_work+0x85f/0x1010 [ 85.238903][ T4317] worker_thread+0xaa6/0x1290 [ 85.244122][ T4317] kthread+0x436/0x520 [ 85.248733][ T4317] ret_from_fork+0x1f/0x30 [ 85.253695][ T4317] [ 85.253695][ T4317] -> #0 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}: [ 85.263628][ T4317] __lock_acquire+0x2c42/0x7d10 [ 85.269123][ T4317] lock_acquire+0x19e/0x400 [ 85.274175][ T4317] __flush_work+0x116/0x210 [ 85.279239][ T4317] __cancel_work_timer+0x3f4/0x560 [ 85.284910][ T4317] hci_request_cancel_all+0xcc/0x300 [ 85.290752][ T4317] hci_dev_do_close+0x4e/0x1030 [ 85.296149][ T4317] hci_rfkill_set_block+0x10a/0x190 [ 85.301895][ T4317] rfkill_set_block+0x1c6/0x420 [ 85.307296][ T4317] rfkill_fop_write+0x452/0x560 [ 85.312696][ T4317] vfs_write+0x30b/0xd60 [ 85.317486][ T4317] ksys_write+0x152/0x260 [ 85.322356][ T4317] do_syscall_64+0x4c/0xa0 [ 85.327325][ T4317] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 85.333770][ T4317] [ 85.333770][ T4317] other info that might help us debug this: [ 85.333770][ T4317] [ 85.344023][ T4317] Chain exists of: [ 85.344023][ T4317] (work_completion)(&hdev->bg_scan_update) --> &data->open_mutex --> rfkill_global_mutex [ 85.344023][ T4317] [ 85.359794][ T4317] Possible unsafe locking scenario: [ 85.359794][ T4317] [ 85.367269][ T4317] CPU0 CPU1 [ 85.372674][ T4317] ---- ---- [ 85.378057][ T4317] lock(rfkill_global_mutex); [ 85.382850][ T4317] lock(&data->open_mutex); [ 85.389983][ T4317] lock(rfkill_global_mutex); [ 85.397294][ T4317] lock((work_completion)(&hdev->bg_scan_update)); [ 85.403906][ T4317] [ 85.403906][ T4317] *** DEADLOCK *** [ 85.403906][ T4317] [ 85.412063][ T4317] 1 lock held by syz.0.17/4317: [ 85.416927][ T4317] #0: ffffffff8d6c51a8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x18b/0x560 [ 85.427067][ T4317] [ 85.427067][ T4317] stack backtrace: [ 85.433118][ T4317] CPU: 0 PID: 4317 Comm: syz.0.17 Not tainted syzkaller #0 [ 85.440338][ T4317] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 85.450459][ T4317] Call Trace: [ 85.453765][ T4317] [ 85.456723][ T4317] dump_stack_lvl+0x188/0x250 [ 85.461518][ T4317] ? load_image+0x400/0x400 [ 85.466049][ T4317] ? show_regs_print_info+0x20/0x20 [ 85.471302][ T4317] ? print_circular_bug+0x12b/0x1a0 [ 85.476537][ T4317] check_noncircular+0x296/0x330 [ 85.481504][ T4317] ? look_up_lock_class+0x71/0x110 [ 85.486660][ T4317] ? add_chain_block+0x940/0x940 [ 85.491637][ T4317] ? lockdep_lock+0xf1/0x1f0 [ 85.496379][ T4317] ? __lock_acquire+0x12e8/0x7d10 [ 85.501443][ T4317] ? mark_lock+0x94/0x320 [ 85.505798][ T4317] __lock_acquire+0x2c42/0x7d10 [ 85.510700][ T4317] ? verify_lock_unused+0x140/0x140 [ 85.515937][ T4317] ? verify_lock_unused+0x140/0x140 [ 85.521174][ T4317] ? mark_lock+0x94/0x320 [ 85.525539][ T4317] lock_acquire+0x19e/0x400 [ 85.530075][ T4317] ? __flush_work+0xfa/0x210 [ 85.534700][ T4317] ? __lock_acquire+0x7d10/0x7d10 [ 85.539893][ T4317] ? read_lock_is_recursive+0x10/0x10 [ 85.545317][ T4317] ? start_flush_work+0x776/0x820 [ 85.550385][ T4317] __flush_work+0x116/0x210 [ 85.555185][ T4317] ? __flush_work+0xfa/0x210 [ 85.559908][ T4317] ? flush_work+0x20/0x20 [ 85.564364][ T4317] ? try_to_grab_pending+0xfa/0x7f0 [ 85.569594][ T4317] ? mark_lock+0x94/0x320 [ 85.573956][ T4317] ? lockdep_hardirqs_on_prepare+0x409/0x770 [ 85.579988][ T4317] ? lock_chain_count+0x20/0x20 [ 85.585057][ T4317] ? mark_lock+0x94/0x320 [ 85.589695][ T4317] ? __cancel_work_timer+0x36a/0x560 [ 85.595016][ T4317] __cancel_work_timer+0x3f4/0x560 [ 85.600162][ T4317] ? cancel_work_sync+0x20/0x20 [ 85.605041][ T4317] ? __cancel_work+0x1f9/0x2e0 [ 85.609829][ T4317] ? lockdep_hardirqs_on+0x94/0x140 [ 85.615055][ T4317] ? __cancel_work+0x27b/0x2e0 [ 85.619843][ T4317] ? cancel_work+0x20/0x20 [ 85.624294][ T4317] ? lock_chain_count+0x20/0x20 [ 85.629184][ T4317] hci_request_cancel_all+0xcc/0x300 [ 85.634507][ T4317] hci_dev_do_close+0x4e/0x1030 [ 85.639384][ T4317] ? _raw_spin_unlock_irqrestore+0xc1/0x120 [ 85.645305][ T4317] ? _raw_spin_unlock+0x40/0x40 [ 85.650181][ T4317] hci_rfkill_set_block+0x10a/0x190 [ 85.655407][ T4317] ? rcu_lock_release+0x20/0x20 [ 85.660382][ T4317] rfkill_set_block+0x1c6/0x420 [ 85.665268][ T4317] rfkill_fop_write+0x452/0x560 [ 85.670274][ T4317] ? rfkill_fop_read+0x4d0/0x4d0 [ 85.675244][ T4317] ? common_file_perm+0x110/0x1c0 [ 85.680302][ T4317] ? fsnotify_perm+0x5d/0x560 [ 85.685019][ T4317] ? security_file_permission+0x75/0xa0 [ 85.690594][ T4317] ? rfkill_fop_read+0x4d0/0x4d0 [ 85.695561][ T4317] vfs_write+0x30b/0xd60 [ 85.699838][ T4317] ? file_end_write+0x250/0x250 [ 85.704715][ T4317] ? __context_tracking_exit+0x4c/0x80 [ 85.710204][ T4317] ? __lock_acquire+0x7d10/0x7d10 [ 85.715258][ T4317] ? __fdget_pos+0x1e2/0x370 [ 85.719873][ T4317] ksys_write+0x152/0x260 [ 85.724231][ T4317] ? __ia32_sys_read+0x80/0x80 [ 85.729023][ T4317] ? lockdep_hardirqs_on+0x94/0x140 [ 85.734266][ T4317] do_syscall_64+0x4c/0xa0 [ 85.738717][ T4317] ? clear_bhb_loop+0x30/0x80 [ 85.743419][ T4317] ? clear_bhb_loop+0x30/0x80 [ 85.748132][ T4317] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 85.754633][ T4317] RIP: 0033:0x7ffb0e502819 [ 85.759094][ T4317] 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 [ 85.778748][ T4317] RSP: 002b:00007fff4dbff658 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 85.787429][ T4317] RAX: ffffffffffffffda RBX: 00007ffb0e77bfa0 RCX: 00007ffb0e502819 [ 85.795450][ T4317] RDX: 0000000000000008 RSI: 00002000000003c0 RDI: 0000000000000003 [ 85.803543][ T4317] RBP: 00007ffb0e598c91 R08: 0000000000000000 R09: 0000000000000000 [ 85.811542][ T4317] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 85.819751][ T4317] R13: 00007ffb0e77bfac R14: 00007ffb0e77bfa0 R15: 00007ffb0e77bfa0 [ 85.827768][ T4317]