Warning: Permanently added '10.128.0.81' (ED25519) to the list of known hosts. 2026/04/19 09:26:59 parsed 1 programs [ 60.865968][ T4190] cgroup: Unknown subsys name 'net' [ 60.987080][ T4190] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size = 127995904 bytes [ 62.460723][ T4190] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k FS [ 64.311191][ T4207] chnl_net:caif_netlink_parms(): no params data found [ 64.358074][ T4207] bridge0: port 1(bridge_slave_0) entered blocking state [ 64.365517][ T4207] bridge0: port 1(bridge_slave_0) entered disabled state [ 64.373410][ T4207] device bridge_slave_0 entered promiscuous mode [ 64.384470][ T4207] bridge0: port 2(bridge_slave_1) entered blocking state [ 64.391731][ T4207] bridge0: port 2(bridge_slave_1) entered disabled state [ 64.400589][ T4207] device bridge_slave_1 entered promiscuous mode [ 64.430245][ T4207] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 64.442073][ T4207] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 64.470127][ T4207] team0: Port device team_slave_0 added [ 64.478052][ T4207] team0: Port device team_slave_1 added [ 64.502431][ T4207] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 64.509400][ 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. [ 64.537812][ T4207] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 64.551729][ T4207] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 64.558700][ 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. [ 64.586267][ T4207] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 64.627744][ T4207] device hsr_slave_0 entered promiscuous mode [ 64.636123][ T4207] device hsr_slave_1 entered promiscuous mode [ 64.772357][ T4207] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 64.785763][ T4207] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 64.796118][ T4207] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 64.807657][ T4207] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 64.840004][ T4207] bridge0: port 2(bridge_slave_1) entered blocking state [ 64.847252][ T4207] bridge0: port 2(bridge_slave_1) entered forwarding state [ 64.855111][ T4207] bridge0: port 1(bridge_slave_0) entered blocking state [ 64.862239][ T4207] bridge0: port 1(bridge_slave_0) entered forwarding state [ 64.925051][ T4207] 8021q: adding VLAN 0 to HW filter on device bond0 [ 64.939094][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 64.950877][ T9] bridge0: port 1(bridge_slave_0) entered disabled state [ 64.959935][ T9] bridge0: port 2(bridge_slave_1) entered disabled state [ 64.969586][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 64.985027][ T4207] 8021q: adding VLAN 0 to HW filter on device team0 [ 64.997202][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 65.007390][ T9] bridge0: port 1(bridge_slave_0) entered blocking state [ 65.014503][ T9] bridge0: port 1(bridge_slave_0) entered forwarding state [ 65.048539][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 65.062267][ T144] bridge0: port 2(bridge_slave_1) entered blocking state [ 65.069362][ T144] bridge0: port 2(bridge_slave_1) entered forwarding state [ 65.095672][ T420] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 65.105381][ T420] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 65.114125][ T420] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 65.123199][ T420] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 65.136175][ T4207] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 65.144734][ T420] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 65.279121][ T420] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 65.287559][ T420] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 65.304161][ T4207] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 65.325063][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 65.335231][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 65.354650][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 65.364952][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 65.374705][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 65.384602][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 65.398216][ T4207] device veth0_vlan entered promiscuous mode [ 65.412354][ T4207] device veth1_vlan entered promiscuous mode [ 65.438621][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 65.448611][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 65.458308][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 65.467461][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 65.478427][ T4207] device veth0_macvtap entered promiscuous mode [ 65.488738][ T4207] device veth1_macvtap entered promiscuous mode [ 65.506877][ T4207] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 65.515397][ T420] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 65.525208][ T420] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 65.533772][ T420] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 65.543963][ T420] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 65.556479][ T4207] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 65.564147][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 65.574306][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 65.587424][ T4207] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 65.596359][ T4207] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 65.606276][ T4207] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 65.616088][ T4207] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 65.732622][ T4207] syz-executor (4207) used greatest stack depth: 20344 bytes left [ 65.836272][ T1411] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 66.099123][ T420] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 66.109739][ T420] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 66.132894][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 66.142255][ T1408] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 66.150092][ T1408] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 66.158388][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 68.287559][ T1411] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 71.106844][ T1411] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 71.148551][ T1411] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 71.316114][ T1429] ieee802154 phy0 wpan0: encryption failed: -22 [ 71.322836][ T1429] ieee802154 phy1 wpan1: encryption failed: -22 2026/04/19 09:27:11 executed programs: 0 [ 72.102514][ T4308] chnl_net:caif_netlink_parms(): no params data found [ 72.150302][ T1411] device hsr_slave_0 left promiscuous mode [ 72.157444][ T1411] device hsr_slave_1 left promiscuous mode [ 72.164271][ T1411] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 72.172094][ T1411] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 72.180340][ T1411] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 72.188166][ T1411] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 72.196174][ T1411] device bridge_slave_1 left promiscuous mode [ 72.203262][ T1411] bridge0: port 2(bridge_slave_1) entered disabled state [ 72.215604][ T1411] device bridge_slave_0 left promiscuous mode [ 72.222218][ T1411] bridge0: port 1(bridge_slave_0) entered disabled state [ 72.238690][ T1411] device veth1_macvtap left promiscuous mode [ 72.244879][ T1411] device veth0_macvtap left promiscuous mode [ 72.250895][ T1411] device veth1_vlan left promiscuous mode [ 72.257187][ T1411] device veth0_vlan left promiscuous mode [ 72.395750][ T1411] team0 (unregistering): Port device team_slave_1 removed [ 72.410099][ T1411] team0 (unregistering): Port device team_slave_0 removed [ 72.426090][ T1411] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 72.439278][ T1411] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 72.490032][ T1411] bond0 (unregistering): Released all slaves [ 72.566411][ T4308] bridge0: port 1(bridge_slave_0) entered blocking state [ 72.573644][ T4308] bridge0: port 1(bridge_slave_0) entered disabled state [ 72.581387][ T4308] device bridge_slave_0 entered promiscuous mode [ 72.591355][ T4308] bridge0: port 2(bridge_slave_1) entered blocking state [ 72.598639][ T4308] bridge0: port 2(bridge_slave_1) entered disabled state [ 72.607124][ T4308] device bridge_slave_1 entered promiscuous mode [ 72.628630][ T4308] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 72.649456][ T4308] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 72.700057][ T4308] team0: Port device team_slave_0 added [ 72.708362][ T4308] team0: Port device team_slave_1 added [ 72.730384][ T4308] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 72.737875][ T4308] 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. [ 72.764059][ T4308] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 72.784121][ T4308] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 72.792464][ T4308] 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. [ 72.821467][ T4308] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 72.890189][ T4308] device hsr_slave_0 entered promiscuous mode [ 72.900003][ T4308] device hsr_slave_1 entered promiscuous mode [ 73.533821][ T4308] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 73.544357][ T4308] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 73.566326][ T4308] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 73.592729][ T4308] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 73.694116][ T4308] 8021q: adding VLAN 0 to HW filter on device bond0 [ 73.707625][ T420] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 73.723499][ T420] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 73.746434][ T4308] 8021q: adding VLAN 0 to HW filter on device team0 [ 73.761208][ T420] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 73.783709][ T420] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 73.804199][ T420] bridge0: port 1(bridge_slave_0) entered blocking state [ 73.811303][ T420] bridge0: port 1(bridge_slave_0) entered forwarding state [ 73.827777][ T420] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 73.845905][ T420] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 73.862188][ T420] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 73.881698][ T420] bridge0: port 2(bridge_slave_1) entered blocking state [ 73.888778][ T420] bridge0: port 2(bridge_slave_1) entered forwarding state [ 73.912356][ T420] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 73.936942][ T420] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 73.955386][ T420] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 73.984747][ T420] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 73.993786][ T420] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 74.015150][ T1408] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 74.025582][ T1408] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 74.034318][ T4214] Bluetooth: hci0: command 0x0409 tx timeout [ 74.066900][ T1408] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 74.083590][ T1408] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 74.106144][ T1408] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 74.123473][ T1408] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 74.146183][ T4308] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 74.350557][ T1408] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 74.361283][ T1408] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 74.375083][ T4308] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 74.397629][ T1408] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 74.407150][ T1408] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 74.428719][ T1408] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 74.443299][ T1408] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 74.459882][ T4308] device veth0_vlan entered promiscuous mode [ 74.468555][ T1408] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 74.478003][ T1408] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 74.496423][ T4308] device veth1_vlan entered promiscuous mode [ 74.548696][ T4308] device veth0_macvtap entered promiscuous mode [ 74.564034][ T420] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 74.579084][ T420] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 74.603907][ T420] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 74.625575][ T420] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 74.634942][ T420] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 74.650826][ T4308] device veth1_macvtap entered promiscuous mode [ 74.688682][ T4308] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 74.704404][ T420] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 74.723430][ T420] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 74.733205][ T420] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 74.748196][ T4308] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 74.757868][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 74.766699][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 74.778177][ T4308] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 74.788014][ T4308] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 74.797461][ T4308] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 74.806695][ T4308] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 74.900956][ T1408] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 74.921119][ T1408] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 74.947577][ T420] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 74.962805][ T420] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 74.970665][ T420] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 74.980680][ T1408] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 75.348529][ T4390] [ 75.350910][ T4390] ====================================================== [ 75.358030][ T4390] WARNING: possible circular locking dependency detected [ 75.365062][ T4390] syzkaller #0 Not tainted [ 75.369490][ T4390] ------------------------------------------------------ [ 75.376517][ T4390] syz.0.17/4390 is trying to acquire lock: [ 75.382337][ T4390] ffff888075014c28 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}, at: __flush_work+0xfa/0x210 [ 75.393422][ T4390] [ 75.393422][ T4390] but task is already holding lock: [ 75.400798][ T4390] ffffffff8d6c5de8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x18b/0x560 [ 75.410496][ T4390] [ 75.410496][ T4390] which lock already depends on the new lock. [ 75.410496][ T4390] [ 75.420919][ T4390] [ 75.420919][ T4390] the existing dependency chain (in reverse order) is: [ 75.429946][ T4390] [ 75.429946][ T4390] -> #4 (rfkill_global_mutex){+.+.}-{3:3}: [ 75.438054][ T4390] __mutex_lock_common+0x1e3/0x2400 [ 75.443807][ T4390] mutex_lock_nested+0x17/0x20 [ 75.449204][ T4390] rfkill_register+0x33/0x980 [ 75.454430][ T4390] hci_register_dev+0x452/0x970 [ 75.459817][ T4390] vhci_create_device+0x32c/0x5c0 [ 75.465386][ T4390] vhci_write+0x391/0x450 [ 75.470259][ T4390] vfs_write+0x745/0xd60 [ 75.475051][ T4390] ksys_write+0x152/0x260 [ 75.479916][ T4390] do_syscall_64+0x4c/0xa0 [ 75.484874][ T4390] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 75.491313][ T4390] [ 75.491313][ T4390] -> #3 (&data->open_mutex){+.+.}-{3:3}: [ 75.499152][ T4390] __mutex_lock_common+0x1e3/0x2400 [ 75.504896][ T4390] mutex_lock_nested+0x17/0x20 [ 75.510201][ T4390] vhci_send_frame+0x88/0x100 [ 75.515429][ T4390] hci_send_frame+0x1a9/0x2e0 [ 75.520649][ T4390] hci_tx_work+0x9f9/0x1710 [ 75.525697][ T4390] process_one_work+0x85f/0x1010 [ 75.531175][ T4390] worker_thread+0xaa6/0x1290 [ 75.536393][ T4390] kthread+0x436/0x520 [ 75.541002][ T4390] ret_from_fork+0x1f/0x30 [ 75.545956][ T4390] [ 75.545956][ T4390] -> #2 ((work_completion)(&hdev->tx_work)){+.+.}-{0:0}: [ 75.555186][ T4390] __flush_work+0x116/0x210 [ 75.560235][ T4390] hci_dev_do_close+0x1e7/0x1030 [ 75.565727][ T4390] hci_unregister_dev+0x2d7/0x580 [ 75.571293][ T4390] vhci_release+0x73/0xc0 [ 75.576165][ T4390] __fput+0x234/0x930 [ 75.580691][ T4390] task_work_run+0x125/0x1a0 [ 75.585822][ T4390] do_exit+0x626/0x20c0 [ 75.590511][ T4390] do_group_exit+0x12e/0x300 [ 75.595642][ T4390] get_signal+0x6ca/0x12c0 [ 75.600593][ T4390] arch_do_signal_or_restart+0xe7/0x12c0 [ 75.606766][ T4390] exit_to_user_mode_loop+0x9e/0x130 [ 75.612585][ T4390] exit_to_user_mode_prepare+0xee/0x180 [ 75.618668][ T4390] syscall_exit_to_user_mode+0x16/0x40 [ 75.624675][ T4390] do_syscall_64+0x58/0xa0 [ 75.629629][ T4390] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 75.636067][ T4390] [ 75.636067][ T4390] -> #1 (&hdev->req_lock){+.+.}-{3:3}: [ 75.643736][ T4390] __mutex_lock_common+0x1e3/0x2400 [ 75.649590][ T4390] mutex_lock_nested+0x17/0x20 [ 75.654896][ T4390] bg_scan_update+0x44/0x3b0 [ 75.660027][ T4390] process_one_work+0x85f/0x1010 [ 75.665510][ T4390] worker_thread+0xaa6/0x1290 [ 75.670820][ T4390] kthread+0x436/0x520 [ 75.675427][ T4390] ret_from_fork+0x1f/0x30 [ 75.680383][ T4390] [ 75.680383][ T4390] -> #0 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}: [ 75.690223][ T4390] __lock_acquire+0x2c42/0x7d10 [ 75.695625][ T4390] lock_acquire+0x19e/0x400 [ 75.700673][ T4390] __flush_work+0x116/0x210 [ 75.705714][ T4390] __cancel_work_timer+0x3f4/0x560 [ 75.711383][ T4390] hci_request_cancel_all+0xcc/0x300 [ 75.717212][ T4390] hci_dev_do_close+0x4e/0x1030 [ 75.722612][ T4390] hci_rfkill_set_block+0x10a/0x190 [ 75.728356][ T4390] rfkill_set_block+0x1c9/0x3d0 [ 75.733751][ T4390] rfkill_fop_write+0x452/0x560 [ 75.739139][ T4390] vfs_write+0x30b/0xd60 [ 75.743928][ T4390] ksys_write+0x152/0x260 [ 75.748799][ T4390] do_syscall_64+0x4c/0xa0 [ 75.753768][ T4390] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 75.760204][ T4390] [ 75.760204][ T4390] other info that might help us debug this: [ 75.760204][ T4390] [ 75.770447][ T4390] Chain exists of: [ 75.770447][ T4390] (work_completion)(&hdev->bg_scan_update) --> &data->open_mutex --> rfkill_global_mutex [ 75.770447][ T4390] [ 75.786202][ T4390] Possible unsafe locking scenario: [ 75.786202][ T4390] [ 75.793666][ T4390] CPU0 CPU1 [ 75.799043][ T4390] ---- ---- [ 75.804429][ T4390] lock(rfkill_global_mutex); [ 75.809208][ T4390] lock(&data->open_mutex); [ 75.816345][ T4390] lock(rfkill_global_mutex); [ 75.823644][ T4390] lock((work_completion)(&hdev->bg_scan_update)); [ 75.830249][ T4390] [ 75.830249][ T4390] *** DEADLOCK *** [ 75.830249][ T4390] [ 75.838410][ T4390] 1 lock held by syz.0.17/4390: [ 75.843279][ T4390] #0: ffffffff8d6c5de8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x18b/0x560 [ 75.853405][ T4390] [ 75.853405][ T4390] stack backtrace: [ 75.859307][ T4390] CPU: 1 PID: 4390 Comm: syz.0.17 Not tainted syzkaller #0 [ 75.866522][ T4390] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 75.876593][ T4390] Call Trace: [ 75.879889][ T4390] [ 75.882836][ T4390] dump_stack_lvl+0x188/0x250 [ 75.887541][ T4390] ? load_image+0x400/0x400 [ 75.892068][ T4390] ? show_regs_print_info+0x20/0x20 [ 75.897302][ T4390] ? print_circular_bug+0x12b/0x1a0 [ 75.902521][ T4390] check_noncircular+0x296/0x330 [ 75.907479][ T4390] ? look_up_lock_class+0x71/0x110 [ 75.912613][ T4390] ? add_chain_block+0x940/0x940 [ 75.917567][ T4390] ? lockdep_lock+0xf1/0x1f0 [ 75.922181][ T4390] ? __lock_acquire+0x12e8/0x7d10 [ 75.927231][ T4390] ? mark_lock+0x94/0x320 [ 75.931584][ T4390] __lock_acquire+0x2c42/0x7d10 [ 75.936465][ T4390] ? verify_lock_unused+0x140/0x140 [ 75.941690][ T4390] ? verify_lock_unused+0x140/0x140 [ 75.946910][ T4390] ? mark_lock+0x94/0x320 [ 75.951281][ T4390] lock_acquire+0x19e/0x400 [ 75.955808][ T4390] ? __flush_work+0xfa/0x210 [ 75.960425][ T4390] ? __lock_acquire+0x7d10/0x7d10 [ 75.965475][ T4390] ? read_lock_is_recursive+0x10/0x10 [ 75.970868][ T4390] ? start_flush_work+0x776/0x820 [ 75.975915][ T4390] __flush_work+0x116/0x210 [ 75.980438][ T4390] ? __flush_work+0xfa/0x210 [ 75.985058][ T4390] ? flush_work+0x20/0x20 [ 75.989417][ T4390] ? try_to_grab_pending+0xfa/0x7f0 [ 75.994638][ T4390] ? mark_lock+0x94/0x320 [ 75.998991][ T4390] ? lockdep_hardirqs_on_prepare+0x409/0x770 [ 76.004999][ T4390] ? lock_chain_count+0x20/0x20 [ 76.009879][ T4390] ? mark_lock+0x94/0x320 [ 76.014234][ T4390] ? __cancel_work_timer+0x36a/0x560 [ 76.019549][ T4390] __cancel_work_timer+0x3f4/0x560 [ 76.024682][ T4390] ? cancel_work_sync+0x20/0x20 [ 76.029552][ T4390] ? __cancel_work+0x1f9/0x2e0 [ 76.034334][ T4390] ? lockdep_hardirqs_on+0x94/0x140 [ 76.039557][ T4390] ? __cancel_work+0x27b/0x2e0 [ 76.044343][ T4390] ? cancel_work+0x20/0x20 [ 76.048890][ T4390] ? lock_chain_count+0x20/0x20 [ 76.053767][ T4390] hci_request_cancel_all+0xcc/0x300 [ 76.059080][ T4390] hci_dev_do_close+0x4e/0x1030 [ 76.063959][ T4390] ? _raw_spin_unlock_irqrestore+0xc1/0x120 [ 76.069889][ T4390] ? _raw_spin_unlock+0x40/0x40 [ 76.074769][ T4390] hci_rfkill_set_block+0x10a/0x190 [ 76.080000][ T4390] ? rcu_lock_release+0x20/0x20 [ 76.084875][ T4390] rfkill_set_block+0x1c9/0x3d0 [ 76.089751][ T4390] rfkill_fop_write+0x452/0x560 [ 76.094626][ T4390] ? rfkill_fop_read+0x520/0x520 [ 76.099591][ T4390] ? common_file_perm+0x140/0x1c0 [ 76.104649][ T4390] ? fsnotify_perm+0x5d/0x560 [ 76.109355][ T4390] ? security_file_permission+0x75/0xa0 [ 76.114930][ T4390] ? rfkill_fop_read+0x520/0x520 [ 76.119992][ T4390] vfs_write+0x30b/0xd60 [ 76.124259][ T4390] ? file_end_write+0x250/0x250 [ 76.129134][ T4390] ? __context_tracking_exit+0x4c/0x80 [ 76.134620][ T4390] ? __lock_acquire+0x7d10/0x7d10 [ 76.139768][ T4390] ? __fdget_pos+0x1e2/0x370 [ 76.144381][ T4390] ksys_write+0x152/0x260 [ 76.148727][ T4390] ? __ia32_sys_read+0x80/0x80 [ 76.153513][ T4390] ? lockdep_hardirqs_on+0x94/0x140 [ 76.158734][ T4390] do_syscall_64+0x4c/0xa0 [ 76.163170][ T4390] ? clear_bhb_loop+0x30/0x80 [ 76.167866][ T4390] ? clear_bhb_loop+0x30/0x80 [ 76.172563][ T4390] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 76.178481][ T4390] RIP: 0033:0x7f779da92819 [ 76.182923][ T4390] 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 [ 76.202556][ T4390] RSP: 002b:00007ffc59e50548 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 76.210998][ T4390] RAX: ffffffffffffffda RBX: 00007f779dd0bfa0 RCX: 00007f779da92819 [ 76.219004][ T4390] RDX: 0000000000000008 RSI: 00002000000000c0 RDI: 0000000000000003 [ 76.227258][ T4390] RBP: 00007f779db28c91 R08: 0000000000000000 R09: 0000000000000000 [ 76.235245][ T4390] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 76.243276][ T4390] R13: 00007f779dd0bfac R14: 00007f779dd0bfa0 R15: 00007f779dd0bfa0 [ 76.251282][ T4390] [ 76.256678][ T4214] Bluetooth: hci0: command 0x041b tx timeout