Warning: Permanently added '10.128.1.56' (ED25519) to the list of known hosts. 2026/04/26 18:25:55 parsed 1 programs [ 51.533337][ T4188] cgroup: Unknown subsys name 'net' [ 51.640868][ T4188] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size = 127995904 bytes [ 52.894022][ T4188] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k FS [ 54.484364][ T4210] chnl_net:caif_netlink_parms(): no params data found [ 54.524602][ T4210] bridge0: port 1(bridge_slave_0) entered blocking state [ 54.532013][ T4210] bridge0: port 1(bridge_slave_0) entered disabled state [ 54.540254][ T4210] device bridge_slave_0 entered promiscuous mode [ 54.548788][ T4210] bridge0: port 2(bridge_slave_1) entered blocking state [ 54.556016][ T4210] bridge0: port 2(bridge_slave_1) entered disabled state [ 54.563814][ T4210] device bridge_slave_1 entered promiscuous mode [ 54.584331][ T4210] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 54.595296][ T4210] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 54.614863][ T4210] team0: Port device team_slave_0 added [ 54.622115][ T4210] team0: Port device team_slave_1 added [ 54.639384][ T4210] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 54.646447][ T4210] 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. [ 54.672575][ T4210] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 54.685937][ T4210] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 54.693093][ T4210] 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. [ 54.719358][ T4210] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 54.748201][ T4210] device hsr_slave_0 entered promiscuous mode [ 54.755331][ T4210] device hsr_slave_1 entered promiscuous mode [ 54.872961][ T4210] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 54.884671][ T4210] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 54.894785][ T4210] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 54.904807][ T4210] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 54.931671][ T4210] bridge0: port 2(bridge_slave_1) entered blocking state [ 54.938895][ T4210] bridge0: port 2(bridge_slave_1) entered forwarding state [ 54.946971][ T4210] bridge0: port 1(bridge_slave_0) entered blocking state [ 54.954071][ T4210] bridge0: port 1(bridge_slave_0) entered forwarding state [ 55.014808][ T4210] 8021q: adding VLAN 0 to HW filter on device bond0 [ 55.030294][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 55.042739][ T154] bridge0: port 1(bridge_slave_0) entered disabled state [ 55.051684][ T154] bridge0: port 2(bridge_slave_1) entered disabled state [ 55.060482][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 55.076511][ T4210] 8021q: adding VLAN 0 to HW filter on device team0 [ 55.087905][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 55.097786][ T154] bridge0: port 1(bridge_slave_0) entered blocking state [ 55.104894][ T154] bridge0: port 1(bridge_slave_0) entered forwarding state [ 55.123747][ T749] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 55.132744][ T749] bridge0: port 2(bridge_slave_1) entered blocking state [ 55.139823][ T749] bridge0: port 2(bridge_slave_1) entered forwarding state [ 55.165258][ T749] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 55.176527][ T749] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 55.186612][ T749] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 55.200133][ T4210] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 55.213242][ T4210] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 55.222032][ T749] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 55.231129][ T749] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 55.344514][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 55.351963][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 55.366265][ T4210] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 55.387804][ T4221] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 55.409338][ T4221] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 55.418295][ T4221] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 55.427440][ T4221] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 55.438475][ T4210] device veth0_vlan entered promiscuous mode [ 55.451252][ T4210] device veth1_vlan entered promiscuous mode [ 55.472970][ T4221] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 55.481057][ T4221] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 55.498113][ T4210] device veth0_macvtap entered promiscuous mode [ 55.506974][ T4221] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 55.526973][ T4221] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 55.537262][ T4221] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 55.550562][ T4210] device veth1_macvtap entered promiscuous mode [ 55.567643][ T4210] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 55.577712][ T4221] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 55.586621][ T4221] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 55.597068][ T4221] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 55.609640][ T4210] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 55.619174][ T4221] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 55.629786][ T4221] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 55.643344][ T4210] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 55.652173][ T4210] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 55.662108][ T4210] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 55.670999][ T4210] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 55.777794][ T4210] syz-executor (4210) used greatest stack depth: 20656 bytes left [ 55.925264][ T144] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 55.972854][ T4221] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 55.980794][ T4221] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 55.991942][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 56.008991][ T4221] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 56.017029][ T4221] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 56.025381][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2026/04/26 18:26:02 executed programs: 0 [ 57.501355][ T4275] chnl_net:caif_netlink_parms(): no params data found [ 57.537280][ T4275] bridge0: port 1(bridge_slave_0) entered blocking state [ 57.544714][ T4275] bridge0: port 1(bridge_slave_0) entered disabled state [ 57.553615][ T4275] device bridge_slave_0 entered promiscuous mode [ 57.561175][ T4275] bridge0: port 2(bridge_slave_1) entered blocking state [ 57.568307][ T4275] bridge0: port 2(bridge_slave_1) entered disabled state [ 57.575976][ T4275] device bridge_slave_1 entered promiscuous mode [ 57.592230][ T4275] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 57.606496][ T4275] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 57.627491][ T4275] team0: Port device team_slave_0 added [ 57.634937][ T4275] team0: Port device team_slave_1 added [ 57.649631][ T4275] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 57.656688][ T4275] 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. [ 57.683345][ T4275] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 57.695383][ T4275] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 57.702414][ T4275] 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. [ 57.729016][ T4275] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 57.757366][ T4275] device hsr_slave_0 entered promiscuous mode [ 57.764391][ T4275] device hsr_slave_1 entered promiscuous mode [ 57.771100][ T4275] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 57.779149][ T4275] Cannot create hsr debugfs directory [ 58.799139][ T144] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 59.443101][ T23] Bluetooth: hci0: command 0x0409 tx timeout [ 61.006414][ T144] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 61.058799][ T144] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 61.512490][ T4271] Bluetooth: hci0: command 0x041b tx timeout [ 61.947630][ T144] device hsr_slave_0 left promiscuous mode [ 61.956675][ T144] device hsr_slave_1 left promiscuous mode [ 61.970618][ T144] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 61.978093][ T144] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 61.986273][ T144] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 61.993805][ T144] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 62.001306][ T144] device bridge_slave_1 left promiscuous mode [ 62.008710][ T144] bridge0: port 2(bridge_slave_1) entered disabled state [ 62.020559][ T144] device bridge_slave_0 left promiscuous mode [ 62.027602][ T144] bridge0: port 1(bridge_slave_0) entered disabled state [ 62.043827][ T144] device veth1_macvtap left promiscuous mode [ 62.050032][ T144] device veth0_macvtap left promiscuous mode [ 62.056114][ T144] device veth1_vlan left promiscuous mode [ 62.061941][ T144] device veth0_vlan left promiscuous mode [ 62.181436][ T144] team0 (unregistering): Port device team_slave_1 removed [ 62.196621][ T144] team0 (unregistering): Port device team_slave_0 removed [ 62.208454][ T144] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 62.221750][ T144] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 62.268862][ T144] bond0 (unregistering): Released all slaves [ 62.325631][ T4275] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 62.334013][ T4275] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 62.342346][ T4275] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 62.351209][ T4275] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 62.407181][ T4275] 8021q: adding VLAN 0 to HW filter on device bond0 [ 62.418124][ T4221] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 62.426979][ T4221] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 62.443370][ T4275] 8021q: adding VLAN 0 to HW filter on device team0 [ 62.453813][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 62.463059][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 62.471400][ T154] bridge0: port 1(bridge_slave_0) entered blocking state [ 62.478476][ T154] bridge0: port 1(bridge_slave_0) entered forwarding state [ 62.493023][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 62.500878][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 62.510299][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 62.518917][ T154] bridge0: port 2(bridge_slave_1) entered blocking state [ 62.525995][ T154] bridge0: port 2(bridge_slave_1) entered forwarding state [ 62.534058][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 62.542912][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 62.560432][ T4221] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 62.570752][ T4221] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 62.581004][ T4221] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 62.589927][ T4221] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 62.598592][ T4221] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 62.606888][ T4221] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 62.615226][ T4221] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 62.627170][ T749] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 62.636208][ T749] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 62.645412][ T4275] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 62.746053][ T749] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 62.754684][ T749] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 62.766317][ T4275] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 62.784994][ T749] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 62.802155][ T749] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 62.822051][ T4275] device veth0_vlan entered promiscuous mode [ 62.830898][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 62.840597][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 62.851281][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 62.861580][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 62.874820][ T4275] device veth1_vlan entered promiscuous mode [ 62.895456][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 62.903571][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 62.911672][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 62.921656][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 62.932485][ T4275] device veth0_macvtap entered promiscuous mode [ 62.941642][ T4275] device veth1_macvtap entered promiscuous mode [ 62.959340][ T4275] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 62.969890][ T4275] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 62.979016][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 62.987609][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 62.997264][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 63.006240][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 63.016549][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 63.025624][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 63.037759][ T4275] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 63.046704][ T4275] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 63.056515][ T4275] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 63.065506][ T4275] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 63.132083][ T154] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 63.148692][ T154] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 63.166728][ T749] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 63.180558][ T154] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 63.188502][ T154] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 63.197019][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 63.324422][ T4326] [ 63.326783][ T4326] ====================================================== [ 63.333801][ T4326] WARNING: possible circular locking dependency detected [ 63.340839][ T4326] syzkaller #0 Not tainted [ 63.345244][ T4326] ------------------------------------------------------ [ 63.352254][ T4326] syz.0.17/4326 is trying to acquire lock: [ 63.358054][ T4326] ffff88802440cc28 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}, at: __flush_work+0xfa/0x210 [ 63.369119][ T4326] [ 63.369119][ T4326] but task is already holding lock: [ 63.376474][ T4326] ffffffff8d6c5de8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x18b/0x560 [ 63.386132][ T4326] [ 63.386132][ T4326] which lock already depends on the new lock. [ 63.386132][ T4326] [ 63.396534][ T4326] [ 63.396534][ T4326] the existing dependency chain (in reverse order) is: [ 63.405539][ T4326] [ 63.405539][ T4326] -> #4 (rfkill_global_mutex){+.+.}-{3:3}: [ 63.413528][ T4326] __mutex_lock_common+0x1e3/0x2400 [ 63.419259][ T4326] mutex_lock_nested+0x17/0x20 [ 63.424542][ T4326] rfkill_register+0x33/0x980 [ 63.429740][ T4326] hci_register_dev+0x452/0x970 [ 63.435111][ T4326] vhci_create_device+0x32c/0x5c0 [ 63.440657][ T4326] vhci_write+0x391/0x450 [ 63.445507][ T4326] vfs_write+0x745/0xd60 [ 63.450266][ T4326] ksys_write+0x152/0x260 [ 63.455111][ T4326] do_syscall_64+0x4c/0xa0 [ 63.460047][ T4326] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 63.466458][ T4326] [ 63.466458][ T4326] -> #3 (&data->open_mutex){+.+.}-{3:3}: [ 63.474276][ T4326] __mutex_lock_common+0x1e3/0x2400 [ 63.479998][ T4326] mutex_lock_nested+0x17/0x20 [ 63.485282][ T4326] vhci_send_frame+0x88/0x100 [ 63.490483][ T4326] hci_send_frame+0x1a9/0x2e0 [ 63.495684][ T4326] hci_tx_work+0x9f9/0x1710 [ 63.500708][ T4326] process_one_work+0x85f/0x1010 [ 63.506172][ T4326] worker_thread+0xaa6/0x1290 [ 63.511370][ T4326] kthread+0x436/0x520 [ 63.515959][ T4326] ret_from_fork+0x1f/0x30 [ 63.520894][ T4326] [ 63.520894][ T4326] -> #2 ((work_completion)(&hdev->tx_work)){+.+.}-{0:0}: [ 63.530101][ T4326] __flush_work+0x116/0x210 [ 63.535128][ T4326] hci_dev_do_close+0x1e7/0x1030 [ 63.540587][ T4326] hci_unregister_dev+0x2d7/0x580 [ 63.546132][ T4326] vhci_release+0x73/0xc0 [ 63.550979][ T4326] __fput+0x234/0x930 [ 63.555480][ T4326] task_work_run+0x125/0x1a0 [ 63.560591][ T4326] do_exit+0x626/0x20c0 [ 63.565262][ T4326] do_group_exit+0x12e/0x300 [ 63.570377][ T4326] get_signal+0x6ca/0x12c0 [ 63.575313][ T4326] arch_do_signal_or_restart+0xe7/0x12c0 [ 63.581474][ T4326] exit_to_user_mode_loop+0x9e/0x130 [ 63.587291][ T4326] exit_to_user_mode_prepare+0xee/0x180 [ 63.593359][ T4326] syscall_exit_to_user_mode+0x16/0x40 [ 63.599350][ T4326] do_syscall_64+0x58/0xa0 [ 63.604285][ T4326] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 63.610704][ T4326] [ 63.610704][ T4326] -> #1 (&hdev->req_lock){+.+.}-{3:3}: [ 63.618353][ T4326] __mutex_lock_common+0x1e3/0x2400 [ 63.624073][ T4326] mutex_lock_nested+0x17/0x20 [ 63.629359][ T4326] bg_scan_update+0x44/0x3b0 [ 63.634473][ T4326] process_one_work+0x85f/0x1010 [ 63.639932][ T4326] worker_thread+0xaa6/0x1290 [ 63.645132][ T4326] kthread+0x436/0x520 [ 63.649718][ T4326] ret_from_fork+0x1f/0x30 [ 63.654651][ T4326] [ 63.654651][ T4326] -> #0 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}: [ 63.664463][ T4326] __lock_acquire+0x2c42/0x7d10 [ 63.669841][ T4326] lock_acquire+0x19e/0x400 [ 63.674863][ T4326] __flush_work+0x116/0x210 [ 63.679890][ T4326] __cancel_work_timer+0x3f4/0x560 [ 63.685520][ T4326] hci_request_cancel_all+0xcc/0x300 [ 63.691327][ T4326] hci_dev_do_close+0x4e/0x1030 [ 63.696698][ T4326] hci_rfkill_set_block+0x10a/0x190 [ 63.702420][ T4326] rfkill_set_block+0x1c9/0x3d0 [ 63.707791][ T4326] rfkill_fop_write+0x452/0x560 [ 63.713164][ T4326] vfs_write+0x30b/0xd60 [ 63.717924][ T4326] ksys_write+0x152/0x260 [ 63.722772][ T4326] do_syscall_64+0x4c/0xa0 [ 63.727709][ T4326] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 63.734124][ T4326] [ 63.734124][ T4326] other info that might help us debug this: [ 63.734124][ T4326] [ 63.744347][ T4326] Chain exists of: [ 63.744347][ T4326] (work_completion)(&hdev->bg_scan_update) --> &data->open_mutex --> rfkill_global_mutex [ 63.744347][ T4326] [ 63.760075][ T4326] Possible unsafe locking scenario: [ 63.760075][ T4326] [ 63.767523][ T4326] CPU0 CPU1 [ 63.772883][ T4326] ---- ---- [ 63.778241][ T4326] lock(rfkill_global_mutex); [ 63.783000][ T4326] lock(&data->open_mutex); [ 63.790103][ T4326] lock(rfkill_global_mutex); [ 63.797379][ T4326] lock((work_completion)(&hdev->bg_scan_update)); [ 63.803965][ T4326] [ 63.803965][ T4326] *** DEADLOCK *** [ 63.803965][ T4326] [ 63.812101][ T4326] 1 lock held by syz.0.17/4326: [ 63.816940][ T4326] #0: ffffffff8d6c5de8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x18b/0x560 [ 63.827032][ T4326] [ 63.827032][ T4326] stack backtrace: [ 63.832934][ T4326] CPU: 1 PID: 4326 Comm: syz.0.17 Not tainted syzkaller #0 [ 63.840129][ T4326] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 63.850187][ T4326] Call Trace: [ 63.853459][ T4326] [ 63.856390][ T4326] dump_stack_lvl+0x188/0x250 [ 63.861070][ T4326] ? load_image+0x400/0x400 [ 63.865572][ T4326] ? show_regs_print_info+0x20/0x20 [ 63.870774][ T4326] ? print_circular_bug+0x12b/0x1a0 [ 63.875974][ T4326] check_noncircular+0x296/0x330 [ 63.880912][ T4326] ? look_up_lock_class+0x71/0x110 [ 63.886027][ T4326] ? add_chain_block+0x940/0x940 [ 63.890967][ T4326] ? lockdep_lock+0xf1/0x1f0 [ 63.895560][ T4326] ? __lock_acquire+0x12e8/0x7d10 [ 63.900587][ T4326] ? mark_lock+0x94/0x320 [ 63.904917][ T4326] __lock_acquire+0x2c42/0x7d10 [ 63.909776][ T4326] ? verify_lock_unused+0x140/0x140 [ 63.914981][ T4326] ? verify_lock_unused+0x140/0x140 [ 63.920179][ T4326] ? mark_lock+0x94/0x320 [ 63.924509][ T4326] lock_acquire+0x19e/0x400 [ 63.929015][ T4326] ? __flush_work+0xfa/0x210 [ 63.933612][ T4326] ? __lock_acquire+0x7d10/0x7d10 [ 63.938643][ T4326] ? read_lock_is_recursive+0x10/0x10 [ 63.944019][ T4326] ? start_flush_work+0x776/0x820 [ 63.949049][ T4326] __flush_work+0x116/0x210 [ 63.953550][ T4326] ? __flush_work+0xfa/0x210 [ 63.958142][ T4326] ? flush_work+0x20/0x20 [ 63.962489][ T4326] ? try_to_grab_pending+0xfa/0x7f0 [ 63.967688][ T4326] ? mark_lock+0x94/0x320 [ 63.972017][ T4326] ? lockdep_hardirqs_on_prepare+0x409/0x770 [ 63.978004][ T4326] ? lock_chain_count+0x20/0x20 [ 63.982867][ T4326] ? mark_lock+0x94/0x320 [ 63.987209][ T4326] ? __cancel_work_timer+0x36a/0x560 [ 63.992496][ T4326] __cancel_work_timer+0x3f4/0x560 [ 63.997610][ T4326] ? cancel_work_sync+0x20/0x20 [ 64.002462][ T4326] ? __cancel_work+0x1f9/0x2e0 [ 64.007231][ T4326] ? lockdep_hardirqs_on+0x94/0x140 [ 64.012475][ T4326] ? __cancel_work+0x27b/0x2e0 [ 64.017241][ T4326] ? cancel_work+0x20/0x20 [ 64.021674][ T4326] ? lock_chain_count+0x20/0x20 [ 64.026543][ T4326] hci_request_cancel_all+0xcc/0x300 [ 64.031838][ T4326] hci_dev_do_close+0x4e/0x1030 [ 64.036821][ T4326] ? _raw_spin_unlock_irqrestore+0xc1/0x120 [ 64.042719][ T4326] ? _raw_spin_unlock+0x40/0x40 [ 64.047580][ T4326] hci_rfkill_set_block+0x10a/0x190 [ 64.052786][ T4326] ? rcu_lock_release+0x20/0x20 [ 64.057643][ T4326] rfkill_set_block+0x1c9/0x3d0 [ 64.062503][ T4326] rfkill_fop_write+0x452/0x560 [ 64.067392][ T4326] ? rfkill_fop_read+0x520/0x520 [ 64.072341][ T4326] ? common_file_perm+0x140/0x1c0 [ 64.077371][ T4326] ? fsnotify_perm+0x5d/0x560 [ 64.082059][ T4326] ? security_file_permission+0x75/0xa0 [ 64.087616][ T4326] ? rfkill_fop_read+0x520/0x520 [ 64.092563][ T4326] vfs_write+0x30b/0xd60 [ 64.096820][ T4326] ? file_end_write+0x250/0x250 [ 64.101676][ T4326] ? __context_tracking_exit+0x4c/0x80 [ 64.107157][ T4326] ? __lock_acquire+0x7d10/0x7d10 [ 64.112192][ T4326] ? __fdget_pos+0x1e2/0x370 [ 64.116788][ T4326] ksys_write+0x152/0x260 [ 64.121119][ T4326] ? __ia32_sys_read+0x80/0x80 [ 64.125888][ T4326] ? lockdep_hardirqs_on+0x94/0x140 [ 64.131099][ T4326] do_syscall_64+0x4c/0xa0 [ 64.135516][ T4326] ? clear_bhb_loop+0x30/0x80 [ 64.140197][ T4326] ? clear_bhb_loop+0x30/0x80 [ 64.144881][ T4326] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 64.150790][ T4326] RIP: 0033:0x7f7e1a52bdd9 [ 64.155207][ T4326] 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 [ 64.175250][ T4326] RSP: 002b:00007ffcdcc61548 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 64.183680][ T4326] RAX: ffffffffffffffda RBX: 00007f7e1a7a4fa0 RCX: 00007f7e1a52bdd9 [ 64.191657][ T4326] RDX: 0000000000000008 RSI: 0000200000000040 RDI: 0000000000000003 [ 64.199635][ T4326] RBP: 00007f7e1a5c1d69 R08: 0000000000000000 R09: 0000000000000000 [ 64.207611][ T4326] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 64.215599][ T4326] R13: 00007f7e1a7a4fac R14: 00007f7e1a7a4fa0 R15: 00007f7e1a7a4fa0 [ 64.223583][ T4326] [ 64.229820][ T4271] Bluetooth: hci0: command 0x040f tx timeout