Warning: Permanently added '10.128.0.113' (ED25519) to the list of known hosts. 2026/04/06 14:36:43 parsed 1 programs [ 61.186484][ T4189] cgroup: Unknown subsys name 'net' [ 61.311326][ T4189] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size = 127995904 bytes [ 62.790172][ T4189] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k FS [ 64.605827][ T4212] chnl_net:caif_netlink_parms(): no params data found [ 64.649144][ T4212] bridge0: port 1(bridge_slave_0) entered blocking state [ 64.656644][ T4212] bridge0: port 1(bridge_slave_0) entered disabled state [ 64.664408][ T4212] device bridge_slave_0 entered promiscuous mode [ 64.673459][ T4212] bridge0: port 2(bridge_slave_1) entered blocking state [ 64.680879][ T4212] bridge0: port 2(bridge_slave_1) entered disabled state [ 64.688934][ T4212] device bridge_slave_1 entered promiscuous mode [ 64.712553][ T4212] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 64.723356][ T4212] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 64.744138][ T4212] team0: Port device team_slave_0 added [ 64.752309][ T4212] team0: Port device team_slave_1 added [ 64.778111][ T4212] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 64.785197][ T4212] 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. [ 64.813148][ T4212] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 64.826708][ T4212] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 64.833685][ T4212] 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. [ 64.861540][ T4212] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 64.902820][ T4212] device hsr_slave_0 entered promiscuous mode [ 64.911323][ T4212] device hsr_slave_1 entered promiscuous mode [ 65.058537][ T4212] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 65.073350][ T4212] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 65.083877][ T4212] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 65.095442][ T4212] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 65.129907][ T4212] bridge0: port 2(bridge_slave_1) entered blocking state [ 65.137189][ T4212] bridge0: port 2(bridge_slave_1) entered forwarding state [ 65.145219][ T4212] bridge0: port 1(bridge_slave_0) entered blocking state [ 65.152451][ T4212] bridge0: port 1(bridge_slave_0) entered forwarding state [ 65.220864][ T4212] 8021q: adding VLAN 0 to HW filter on device bond0 [ 65.238210][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 65.251926][ T154] bridge0: port 1(bridge_slave_0) entered disabled state [ 65.261872][ T154] bridge0: port 2(bridge_slave_1) entered disabled state [ 65.279108][ T4212] 8021q: adding VLAN 0 to HW filter on device team0 [ 65.291683][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 65.300654][ T154] bridge0: port 1(bridge_slave_0) entered blocking state [ 65.307921][ T154] bridge0: port 1(bridge_slave_0) entered forwarding state [ 65.327649][ T523] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 65.340078][ T523] bridge0: port 2(bridge_slave_1) entered blocking state [ 65.347229][ T523] bridge0: port 2(bridge_slave_1) entered forwarding state [ 65.368345][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 65.378998][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 65.400288][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 65.418229][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 65.427404][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 65.438818][ T4212] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 65.578740][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 65.588137][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 65.603915][ T4212] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 65.626545][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 65.638002][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 65.669410][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 65.678786][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 65.688471][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 65.697635][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 65.709130][ T4212] device veth0_vlan entered promiscuous mode [ 65.723686][ T4212] device veth1_vlan entered promiscuous mode [ 65.746549][ T523] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 65.754730][ T523] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 65.764940][ T523] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 65.773816][ T523] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 65.787667][ T4212] device veth0_macvtap entered promiscuous mode [ 65.800709][ T4212] device veth1_macvtap entered promiscuous mode [ 65.818466][ T4212] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 65.830413][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 65.839304][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 65.848030][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 65.856871][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 65.868893][ T4212] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 65.877433][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 65.888038][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 65.901868][ T4212] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 65.912818][ T4212] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 65.921846][ T4212] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 65.930701][ T4212] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 66.149225][ T3100] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 66.857129][ T144] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 66.865307][ T144] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 66.877860][ T523] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 66.895472][ T154] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 66.903633][ T154] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 66.911467][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 68.901457][ T3100] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 71.409678][ T1420] ieee802154 phy0 wpan0: encryption failed: -22 [ 71.417876][ T1420] ieee802154 phy1 wpan1: encryption failed: -22 [ 71.427422][ T3100] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 71.502026][ T3100] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 72.727962][ T3100] device hsr_slave_0 left promiscuous mode [ 72.745131][ T3100] device hsr_slave_1 left promiscuous mode [ 72.756640][ T3100] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 72.764147][ T3100] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 72.793641][ T3100] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 72.812122][ T3100] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 72.823015][ T3100] device bridge_slave_1 left promiscuous mode [ 72.832668][ T3100] bridge0: port 2(bridge_slave_1) entered disabled state [ 72.852891][ T3100] device bridge_slave_0 left promiscuous mode [ 72.861657][ T3100] bridge0: port 1(bridge_slave_0) entered disabled state [ 72.886533][ T3100] device veth1_macvtap left promiscuous mode [ 72.893686][ T3100] device veth0_macvtap left promiscuous mode [ 72.901148][ T3100] device veth1_vlan left promiscuous mode [ 72.907744][ T3100] device veth0_vlan left promiscuous mode 2026/04/06 14:36:56 executed programs: 0 [ 73.173737][ T3100] team0 (unregistering): Port device team_slave_1 removed [ 73.190682][ T3100] team0 (unregistering): Port device team_slave_0 removed [ 73.208315][ T3100] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 73.223190][ T3100] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 73.272651][ T3100] bond0 (unregistering): Released all slaves [ 73.451220][ T4318] chnl_net:caif_netlink_parms(): no params data found [ 73.532770][ T4318] bridge0: port 1(bridge_slave_0) entered blocking state [ 73.543204][ T4318] bridge0: port 1(bridge_slave_0) entered disabled state [ 73.551980][ T4318] device bridge_slave_0 entered promiscuous mode [ 73.571099][ T4318] bridge0: port 2(bridge_slave_1) entered blocking state [ 73.598457][ T4318] bridge0: port 2(bridge_slave_1) entered disabled state [ 73.607411][ T4318] device bridge_slave_1 entered promiscuous mode [ 73.636878][ T4318] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 73.661784][ T4318] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 73.694031][ T4318] team0: Port device team_slave_0 added [ 73.711482][ T4318] team0: Port device team_slave_1 added [ 73.771800][ T4318] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 73.779875][ T4318] 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. [ 73.806216][ T4318] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 73.824474][ T4318] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 73.833733][ T4318] 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. [ 73.860368][ T4318] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 73.920158][ T4318] device hsr_slave_0 entered promiscuous mode [ 73.927780][ T4318] device hsr_slave_1 entered promiscuous mode [ 74.659057][ T4318] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 74.671083][ T4318] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 74.681415][ T4318] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 74.692045][ T4318] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 74.786299][ T4318] 8021q: adding VLAN 0 to HW filter on device bond0 [ 74.802702][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 74.811768][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 74.824064][ T4318] 8021q: adding VLAN 0 to HW filter on device team0 [ 74.835467][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 74.846981][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 74.876294][ T144] bridge0: port 1(bridge_slave_0) entered blocking state [ 74.883426][ T144] bridge0: port 1(bridge_slave_0) entered forwarding state [ 74.898431][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 74.919257][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 74.936334][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 74.955695][ T144] bridge0: port 2(bridge_slave_1) entered blocking state [ 74.962794][ T144] bridge0: port 2(bridge_slave_1) entered forwarding state [ 74.982284][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 75.026768][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 75.046351][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 75.060882][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 75.069743][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 75.080701][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 75.098654][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 75.124107][ T4318] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 75.156476][ T4318] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 75.176933][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 75.198421][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 75.217944][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 75.245879][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 75.246670][ T4218] Bluetooth: hci0: command 0x0409 tx timeout [ 75.258919][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 75.448838][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 75.459649][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 75.480891][ T4318] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 75.527709][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 75.538409][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 75.580916][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 75.592337][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 75.613974][ T4318] device veth0_vlan entered promiscuous mode [ 75.622348][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 75.631850][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 75.650310][ T4318] device veth1_vlan entered promiscuous mode [ 75.702947][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 75.713052][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 75.730936][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 75.756356][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 75.778778][ T4318] device veth0_macvtap entered promiscuous mode [ 75.797054][ T4318] device veth1_macvtap entered promiscuous mode [ 75.840779][ T4318] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 75.856205][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 75.864998][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 75.883318][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 75.893443][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 75.908556][ T4318] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 75.917625][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 75.927833][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 75.941422][ T4318] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 75.951533][ T4318] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 75.960579][ T4318] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 75.972409][ T4318] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 76.070052][ T144] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 76.084108][ T144] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 76.136817][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 76.187203][ T9] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 76.195088][ T9] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 76.211989][ T3078] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 76.506916][ T4440] [ 76.509307][ T4440] ====================================================== [ 76.516347][ T4440] WARNING: possible circular locking dependency detected [ 76.523415][ T4440] syzkaller #0 Not tainted [ 76.527849][ T4440] ------------------------------------------------------ [ 76.534977][ T4440] syz.0.17/4440 is trying to acquire lock: [ 76.540804][ T4440] ffff8880786f0c28 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}, at: __flush_work+0xfa/0x210 [ 76.551888][ T4440] [ 76.551888][ T4440] but task is already holding lock: [ 76.559283][ T4440] ffffffff8d6c51a8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x18b/0x560 [ 76.569012][ T4440] [ 76.569012][ T4440] which lock already depends on the new lock. [ 76.569012][ T4440] [ 76.579552][ T4440] [ 76.579552][ T4440] the existing dependency chain (in reverse order) is: [ 76.588591][ T4440] [ 76.588591][ T4440] -> #4 (rfkill_global_mutex){+.+.}-{3:3}: [ 76.596618][ T4440] __mutex_lock_common+0x1e3/0x2400 [ 76.602391][ T4440] mutex_lock_nested+0x17/0x20 [ 76.607804][ T4440] rfkill_register+0x33/0x8a0 [ 76.613125][ T4440] hci_register_dev+0x452/0x970 [ 76.618532][ T4440] vhci_create_device+0x32c/0x5c0 [ 76.624111][ T4440] vhci_write+0x391/0x450 [ 76.629009][ T4440] vfs_write+0x745/0xd60 [ 76.633829][ T4440] ksys_write+0x152/0x260 [ 76.638856][ T4440] do_syscall_64+0x4c/0xa0 [ 76.643866][ T4440] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 76.650318][ T4440] [ 76.650318][ T4440] -> #3 (&data->open_mutex){+.+.}-{3:3}: [ 76.658263][ T4440] __mutex_lock_common+0x1e3/0x2400 [ 76.664038][ T4440] mutex_lock_nested+0x17/0x20 [ 76.669533][ T4440] vhci_send_frame+0x88/0x100 [ 76.674768][ T4440] hci_send_frame+0x1a9/0x2e0 [ 76.679999][ T4440] hci_tx_work+0x9f9/0x1710 [ 76.685051][ T4440] process_one_work+0x85f/0x1010 [ 76.690542][ T4440] worker_thread+0xaa6/0x1290 [ 76.695773][ T4440] kthread+0x436/0x520 [ 76.700392][ T4440] ret_from_fork+0x1f/0x30 [ 76.705365][ T4440] [ 76.705365][ T4440] -> #2 ((work_completion)(&hdev->tx_work)){+.+.}-{0:0}: [ 76.714611][ T4440] __flush_work+0x116/0x210 [ 76.719772][ T4440] hci_dev_do_close+0x1e7/0x1030 [ 76.725459][ T4440] hci_unregister_dev+0x2d7/0x580 [ 76.731030][ T4440] vhci_release+0x73/0xc0 [ 76.735910][ T4440] __fput+0x234/0x930 [ 76.740439][ T4440] task_work_run+0x125/0x1a0 [ 76.745576][ T4440] do_exit+0x626/0x20c0 [ 76.750288][ T4440] do_group_exit+0x12e/0x300 [ 76.755424][ T4440] get_signal+0x6ca/0x12c0 [ 76.760394][ T4440] arch_do_signal_or_restart+0xe7/0x12c0 [ 76.766578][ T4440] exit_to_user_mode_loop+0x9e/0x130 [ 76.772597][ T4440] exit_to_user_mode_prepare+0xee/0x180 [ 76.778706][ T4440] syscall_exit_to_user_mode+0x16/0x40 [ 76.784717][ T4440] do_syscall_64+0x58/0xa0 [ 76.789688][ T4440] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 76.796130][ T4440] [ 76.796130][ T4440] -> #1 (&hdev->req_lock){+.+.}-{3:3}: [ 76.803811][ T4440] __mutex_lock_common+0x1e3/0x2400 [ 76.809566][ T4440] mutex_lock_nested+0x17/0x20 [ 76.814884][ T4440] bg_scan_update+0x44/0x3b0 [ 76.820026][ T4440] process_one_work+0x85f/0x1010 [ 76.825523][ T4440] worker_thread+0xaa6/0x1290 [ 76.830749][ T4440] kthread+0x436/0x520 [ 76.835367][ T4440] ret_from_fork+0x1f/0x30 [ 76.840339][ T4440] [ 76.840339][ T4440] -> #0 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}: [ 76.850227][ T4440] __lock_acquire+0x2c42/0x7d10 [ 76.855645][ T4440] lock_acquire+0x19e/0x400 [ 76.860708][ T4440] __flush_work+0x116/0x210 [ 76.865763][ T4440] __cancel_work_timer+0x3f4/0x560 [ 76.871435][ T4440] hci_request_cancel_all+0xcc/0x300 [ 76.877287][ T4440] hci_dev_do_close+0x4e/0x1030 [ 76.882690][ T4440] hci_rfkill_set_block+0x10a/0x190 [ 76.888444][ T4440] rfkill_set_block+0x1c6/0x420 [ 76.893959][ T4440] rfkill_fop_write+0x452/0x560 [ 76.899358][ T4440] vfs_write+0x30b/0xd60 [ 76.904148][ T4440] ksys_write+0x152/0x260 [ 76.909027][ T4440] do_syscall_64+0x4c/0xa0 [ 76.913995][ T4440] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 76.920461][ T4440] [ 76.920461][ T4440] other info that might help us debug this: [ 76.920461][ T4440] [ 76.930715][ T4440] Chain exists of: [ 76.930715][ T4440] (work_completion)(&hdev->bg_scan_update) --> &data->open_mutex --> rfkill_global_mutex [ 76.930715][ T4440] [ 76.946566][ T4440] Possible unsafe locking scenario: [ 76.946566][ T4440] [ 76.954137][ T4440] CPU0 CPU1 [ 76.959703][ T4440] ---- ---- [ 76.965091][ T4440] lock(rfkill_global_mutex); [ 76.969888][ T4440] lock(&data->open_mutex); [ 76.977031][ T4440] lock(rfkill_global_mutex); [ 76.984343][ T4440] lock((work_completion)(&hdev->bg_scan_update)); [ 76.990962][ T4440] [ 76.990962][ T4440] *** DEADLOCK *** [ 76.990962][ T4440] [ 76.999131][ T4440] 1 lock held by syz.0.17/4440: [ 77.004007][ T4440] #0: ffffffff8d6c51a8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x18b/0x560 [ 77.014147][ T4440] [ 77.014147][ T4440] stack backtrace: [ 77.020061][ T4440] CPU: 0 PID: 4440 Comm: syz.0.17 Not tainted syzkaller #0 [ 77.027295][ T4440] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 77.038292][ T4440] Call Trace: [ 77.041633][ T4440] [ 77.044590][ T4440] dump_stack_lvl+0x188/0x250 [ 77.049302][ T4440] ? load_image+0x400/0x400 [ 77.053845][ T4440] ? show_regs_print_info+0x20/0x20 [ 77.059081][ T4440] ? print_circular_bug+0x12b/0x1a0 [ 77.064316][ T4440] check_noncircular+0x296/0x330 [ 77.069293][ T4440] ? look_up_lock_class+0x71/0x110 [ 77.074452][ T4440] ? add_chain_block+0x940/0x940 [ 77.079419][ T4440] ? lockdep_lock+0xf1/0x1f0 [ 77.084050][ T4440] ? __lock_acquire+0x12e8/0x7d10 [ 77.089110][ T4440] ? mark_lock+0x94/0x320 [ 77.093464][ T4440] __lock_acquire+0x2c42/0x7d10 [ 77.098491][ T4440] ? verify_lock_unused+0x140/0x140 [ 77.103738][ T4440] ? verify_lock_unused+0x140/0x140 [ 77.108972][ T4440] ? mark_lock+0x94/0x320 [ 77.113335][ T4440] lock_acquire+0x19e/0x400 [ 77.117872][ T4440] ? __flush_work+0xfa/0x210 [ 77.122494][ T4440] ? __lock_acquire+0x7d10/0x7d10 [ 77.127564][ T4440] ? read_lock_is_recursive+0x10/0x10 [ 77.132985][ T4440] ? start_flush_work+0x776/0x820 [ 77.138044][ T4440] __flush_work+0x116/0x210 [ 77.142586][ T4440] ? __flush_work+0xfa/0x210 [ 77.147223][ T4440] ? flush_work+0x20/0x20 [ 77.151589][ T4440] ? try_to_grab_pending+0xfa/0x7f0 [ 77.156816][ T4440] ? mark_lock+0x94/0x320 [ 77.161167][ T4440] ? lockdep_hardirqs_on_prepare+0x409/0x770 [ 77.167180][ T4440] ? lock_chain_count+0x20/0x20 [ 77.172063][ T4440] ? mark_lock+0x94/0x320 [ 77.176412][ T4440] ? __cancel_work_timer+0x36a/0x560 [ 77.181709][ T4440] __cancel_work_timer+0x3f4/0x560 [ 77.186820][ T4440] ? cancel_work_sync+0x20/0x20 [ 77.191671][ T4440] ? __cancel_work+0x1f9/0x2e0 [ 77.196435][ T4440] ? lockdep_hardirqs_on+0x94/0x140 [ 77.201638][ T4440] ? __cancel_work+0x27b/0x2e0 [ 77.206462][ T4440] ? cancel_work+0x20/0x20 [ 77.210887][ T4440] ? lock_chain_count+0x20/0x20 [ 77.215745][ T4440] hci_request_cancel_all+0xcc/0x300 [ 77.221035][ T4440] hci_dev_do_close+0x4e/0x1030 [ 77.225907][ T4440] ? _raw_spin_unlock_irqrestore+0xc1/0x120 [ 77.231891][ T4440] ? _raw_spin_unlock+0x40/0x40 [ 77.236745][ T4440] hci_rfkill_set_block+0x10a/0x190 [ 77.241952][ T4440] ? rcu_lock_release+0x20/0x20 [ 77.246827][ T4440] rfkill_set_block+0x1c6/0x420 [ 77.251680][ T4440] rfkill_fop_write+0x452/0x560 [ 77.256535][ T4440] ? rfkill_fop_read+0x4d0/0x4d0 [ 77.261484][ T4440] ? common_file_perm+0x110/0x1c0 [ 77.266512][ T4440] ? fsnotify_perm+0x5d/0x560 [ 77.271189][ T4440] ? security_file_permission+0x75/0xa0 [ 77.276829][ T4440] ? rfkill_fop_read+0x4d0/0x4d0 [ 77.281770][ T4440] vfs_write+0x30b/0xd60 [ 77.286012][ T4440] ? file_end_write+0x250/0x250 [ 77.290873][ T4440] ? __context_tracking_exit+0x4c/0x80 [ 77.296438][ T4440] ? __lock_acquire+0x7d10/0x7d10 [ 77.301480][ T4440] ? __fdget_pos+0x1e2/0x370 [ 77.306168][ T4440] ksys_write+0x152/0x260 [ 77.310611][ T4440] ? __ia32_sys_read+0x80/0x80 [ 77.315381][ T4440] ? lockdep_hardirqs_on+0x94/0x140 [ 77.320582][ T4440] do_syscall_64+0x4c/0xa0 [ 77.324999][ T4440] ? clear_bhb_loop+0x30/0x80 [ 77.329677][ T4440] ? clear_bhb_loop+0x30/0x80 [ 77.334394][ T4440] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 77.340292][ T4440] RIP: 0033:0x7f917fb1b819 [ 77.344710][ T4440] 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 [ 77.364320][ T4440] RSP: 002b:00007ffd6f34c3e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 77.372748][ T4440] RAX: ffffffffffffffda RBX: 00007f917fd94fa0 RCX: 00007f917fb1b819 [ 77.380722][ T4440] RDX: 0000000000000008 RSI: 0000200000000080 RDI: 0000000000000003 [ 77.388693][ T4440] RBP: 00007f917fbb1c91 R08: 0000000000000000 R09: 0000000000000000 [ 77.396666][ T4440] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 77.404652][ T4440] R13: 00007f917fd94fac R14: 00007f917fd94fa0 R15: 00007f917fd94fa0 [ 77.412886][ T4440] [ 77.417269][ T21] Bluetooth: hci0: command 0x041b tx timeout