Warning: Permanently added '10.128.1.123' (ED25519) to the list of known hosts. 2026/10/02 14:25:08 parsed 1 programs 2026/10/02 14:25:08 serving rpc on tcp://40733 [ 50.578492][ T4196] cgroup: Unknown subsys name 'net' [ 50.704423][ T4196] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size = 127995904 bytes [ 51.890473][ T4196] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k FS [ 54.223578][ T4236] chnl_net:caif_netlink_parms(): no params data found [ 54.284045][ T4236] bridge0: port 1(bridge_slave_0) entered blocking state [ 54.292681][ T4236] bridge0: port 1(bridge_slave_0) entered disabled state [ 54.301251][ T4236] device bridge_slave_0 entered promiscuous mode [ 54.310532][ T4236] bridge0: port 2(bridge_slave_1) entered blocking state [ 54.317595][ T4236] bridge0: port 2(bridge_slave_1) entered disabled state [ 54.326012][ T4236] device bridge_slave_1 entered promiscuous mode [ 54.348559][ T4236] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 54.360387][ T4236] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 54.386404][ T4236] team0: Port device team_slave_0 added [ 54.394240][ T4236] team0: Port device team_slave_1 added [ 54.414059][ T4236] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 54.421113][ T4236] 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. [ 54.447328][ T4236] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 54.460487][ T4236] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 54.467420][ T4236] 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. [ 54.493846][ T4236] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 54.529118][ T4236] device hsr_slave_0 entered promiscuous mode [ 54.535886][ T4236] device hsr_slave_1 entered promiscuous mode [ 54.650376][ T4236] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 54.660645][ T4236] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 54.671719][ T4236] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 54.681879][ T4236] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 54.706991][ T4236] bridge0: port 2(bridge_slave_1) entered blocking state [ 54.714166][ T4236] bridge0: port 2(bridge_slave_1) entered forwarding state [ 54.721953][ T4236] bridge0: port 1(bridge_slave_0) entered blocking state [ 54.729025][ T4236] bridge0: port 1(bridge_slave_0) entered forwarding state [ 54.765486][ T4236] 8021q: adding VLAN 0 to HW filter on device bond0 [ 54.777730][ T1153] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 54.788082][ T1153] bridge0: port 1(bridge_slave_0) entered disabled state [ 54.796741][ T1153] bridge0: port 2(bridge_slave_1) entered disabled state [ 54.807672][ T4236] 8021q: adding VLAN 0 to HW filter on device team0 [ 54.822240][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 54.832329][ T154] bridge0: port 1(bridge_slave_0) entered blocking state [ 54.839434][ T154] bridge0: port 1(bridge_slave_0) entered forwarding state [ 54.847066][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 54.856585][ T154] bridge0: port 2(bridge_slave_1) entered blocking state [ 54.863645][ T154] bridge0: port 2(bridge_slave_1) entered forwarding state [ 54.893254][ T1153] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 54.903194][ T1153] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 54.912571][ T1153] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 54.923109][ T1153] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 54.937074][ T4236] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 54.951609][ T4236] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 54.963146][ T3086] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 55.054401][ T3086] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 55.063041][ T3086] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 55.074521][ T4236] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 55.090378][ T3086] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 55.106983][ T3086] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 55.116096][ T3086] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 55.124026][ T3086] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 55.133897][ T4236] device veth0_vlan entered promiscuous mode [ 55.144661][ T4236] device veth1_vlan entered promiscuous mode [ 55.161405][ T3086] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 55.169847][ T3086] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 55.179336][ T4236] device veth0_macvtap entered promiscuous mode [ 55.190056][ T4236] device veth1_macvtap entered promiscuous mode [ 55.203495][ T4236] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 55.211156][ T3086] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 55.219103][ T3086] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 55.227448][ T3086] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 55.236318][ T3086] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 55.247808][ T4236] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 55.256231][ T3086] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 55.265084][ T3086] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 55.293234][ T4236] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 55.302521][ T4236] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 55.312537][ T4236] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 55.321348][ T4236] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 55.578919][ T3086] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 55.586999][ T3086] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 55.597119][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 55.628306][ T1153] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 55.636837][ T1153] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 55.644575][ T1153] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2026/10/02 14:25:15 executed programs: 0 [ 56.702496][ T4293] chnl_net:caif_netlink_parms(): no params data found [ 56.756082][ T4293] bridge0: port 1(bridge_slave_0) entered blocking state [ 56.763595][ T4293] bridge0: port 1(bridge_slave_0) entered disabled state [ 56.771531][ T4293] device bridge_slave_0 entered promiscuous mode [ 56.780362][ T4293] bridge0: port 2(bridge_slave_1) entered blocking state [ 56.787466][ T4293] bridge0: port 2(bridge_slave_1) entered disabled state [ 56.796096][ T4293] device bridge_slave_1 entered promiscuous mode [ 56.819147][ T4293] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 56.830786][ T4293] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 56.855749][ T4293] team0: Port device team_slave_0 added [ 56.863831][ T4293] team0: Port device team_slave_1 added [ 56.886750][ T4293] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 56.893754][ T4293] 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. [ 56.919837][ T4293] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 56.931988][ T4293] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 56.938926][ T4293] 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. [ 56.965844][ T4293] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 56.998824][ T4293] device hsr_slave_0 entered promiscuous mode [ 57.005597][ T4293] device hsr_slave_1 entered promiscuous mode [ 57.012340][ T4293] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 57.020240][ T4293] Cannot create hsr debugfs directory [ 57.097095][ T4293] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 58.631090][ T4244] Bluetooth: hci0: command 0x0409 tx timeout [ 60.675069][ T4293] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 60.709619][ T4252] Bluetooth: hci0: command 0x041b tx timeout [ 60.973493][ T4293] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 61.034815][ T4293] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 61.132107][ T4293] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 61.141063][ T4293] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 61.162673][ T4293] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 61.171249][ T4293] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 61.216360][ T4293] 8021q: adding VLAN 0 to HW filter on device bond0 [ 61.227857][ T3086] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 61.236095][ T3086] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 61.256816][ T4293] 8021q: adding VLAN 0 to HW filter on device team0 [ 61.266868][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 61.275974][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 61.284536][ T154] bridge0: port 1(bridge_slave_0) entered blocking state [ 61.291626][ T154] bridge0: port 1(bridge_slave_0) entered forwarding state [ 61.300230][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 61.325003][ T3086] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 61.333705][ T3086] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 61.344330][ T3086] bridge0: port 2(bridge_slave_1) entered blocking state [ 61.351410][ T3086] bridge0: port 2(bridge_slave_1) entered forwarding state [ 61.378154][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 61.387593][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 61.398130][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 61.407052][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 61.418031][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 61.426602][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 61.436135][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 61.459814][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 61.468146][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 61.478686][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 61.487005][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 61.496691][ T4293] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 61.590249][ T1153] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 61.597653][ T1153] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 61.609562][ T4293] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 61.624532][ T3086] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 61.633497][ T3086] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 61.661416][ T3086] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 61.672502][ T3086] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 61.681105][ T3086] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 61.688778][ T3086] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 61.704227][ T4293] device veth0_vlan entered promiscuous mode [ 61.714060][ T4293] device veth1_vlan entered promiscuous mode [ 61.729227][ T3086] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 61.737465][ T3086] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 61.745848][ T3086] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 61.755599][ T3086] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 61.765895][ T4293] device veth0_macvtap entered promiscuous mode [ 61.778918][ T4293] device veth1_macvtap entered promiscuous mode [ 61.794299][ T9] device hsr_slave_0 left promiscuous mode [ 61.801368][ T9] device hsr_slave_1 left promiscuous mode [ 61.807638][ T9] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 61.815596][ T9] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 61.824353][ T9] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 61.832717][ T9] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 61.840259][ T9] device bridge_slave_1 left promiscuous mode [ 61.846812][ T9] bridge0: port 2(bridge_slave_1) entered disabled state [ 61.858439][ T9] device bridge_slave_0 left promiscuous mode [ 61.865668][ T9] bridge0: port 1(bridge_slave_0) entered disabled state [ 61.881203][ T9] device veth1_macvtap left promiscuous mode [ 61.887355][ T9] device veth0_macvtap left promiscuous mode [ 61.894065][ T9] device veth1_vlan left promiscuous mode [ 61.899966][ T9] device veth0_vlan left promiscuous mode [ 62.024637][ T9] team0 (unregistering): Port device team_slave_1 removed [ 62.035855][ T9] team0 (unregistering): Port device team_slave_0 removed [ 62.047116][ T9] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 62.063691][ T9] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 62.106853][ T9] bond0 (unregistering): Released all slaves [ 62.158278][ T4293] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 62.169907][ T4293] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 62.177810][ T3086] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 62.186219][ T3086] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 62.194825][ T3086] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 62.203580][ T3086] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 62.212090][ T3086] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 62.220765][ T3086] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 62.232861][ T4293] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 62.241845][ T4293] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 62.250806][ T4293] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 62.259757][ T4293] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 62.323231][ T3086] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 62.333769][ T3086] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 62.342798][ T1153] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 62.370264][ T3086] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 62.378441][ T3086] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 62.386358][ T3086] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 62.449202][ T4311] [ 62.451545][ T4311] ====================================================== [ 62.458552][ T4311] WARNING: possible circular locking dependency detected [ 62.465566][ T4311] syzkaller #0 Not tainted [ 62.469973][ T4311] ------------------------------------------------------ [ 62.476981][ T4311] syz.0.17/4311 is trying to acquire lock: [ 62.482774][ T4311] ffff88807db81028 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}, at: __flush_work+0xfa/0x210 [ 62.493831][ T4311] [ 62.493831][ T4311] but task is already holding lock: [ 62.501185][ T4311] ffffffff8d6d6b68 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x1ae/0x560 [ 62.510838][ T4311] [ 62.510838][ T4311] which lock already depends on the new lock. [ 62.510838][ T4311] [ 62.521230][ T4311] [ 62.521230][ T4311] the existing dependency chain (in reverse order) is: [ 62.530233][ T4311] [ 62.530233][ T4311] -> #4 (rfkill_global_mutex){+.+.}-{3:3}: [ 62.538224][ T4311] __mutex_lock_common+0x1e5/0x2400 [ 62.543947][ T4311] mutex_lock_nested+0x17/0x20 [ 62.549229][ T4311] rfkill_register+0x2f/0x970 [ 62.554453][ T4311] hci_register_dev+0x459/0x980 [ 62.559822][ T4311] vhci_create_device+0x32e/0x5c0 [ 62.565364][ T4311] vhci_write+0x389/0x440 [ 62.570213][ T4311] vfs_write+0x748/0xd70 [ 62.574980][ T4311] ksys_write+0x153/0x260 [ 62.579828][ T4311] do_syscall_64+0x4c/0xa0 [ 62.584761][ T4311] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 62.591178][ T4311] [ 62.591178][ T4311] -> #3 (&data->open_mutex){+.+.}-{3:3}: [ 62.598991][ T4311] __mutex_lock_common+0x1e5/0x2400 [ 62.604708][ T4311] mutex_lock_nested+0x17/0x20 [ 62.609989][ T4311] vhci_send_frame+0x88/0x100 [ 62.615186][ T4311] hci_send_frame+0x1a9/0x2e0 [ 62.620380][ T4311] hci_tx_work+0x9b5/0x16d0 [ 62.625400][ T4311] process_one_work+0x867/0xff0 [ 62.630767][ T4311] worker_thread+0xad7/0x12a0 [ 62.635958][ T4311] kthread+0x42e/0x520 [ 62.640544][ T4311] ret_from_fork+0x1f/0x30 [ 62.645481][ T4311] [ 62.645481][ T4311] -> #2 ((work_completion)(&hdev->tx_work)){+.+.}-{0:0}: [ 62.654684][ T4311] __flush_work+0x116/0x210 [ 62.659706][ T4311] hci_dev_do_close+0x201/0x1020 [ 62.665159][ T4311] hci_unregister_dev+0x2eb/0x590 [ 62.670703][ T4311] vhci_release+0x73/0xc0 [ 62.675550][ T4311] __fput+0x212/0x8c0 [ 62.680051][ T4311] task_work_run+0x125/0x1a0 [ 62.685153][ T4311] do_exit+0x635/0x2110 [ 62.689826][ T4311] do_group_exit+0x12c/0x2f0 [ 62.694932][ T4311] get_signal+0x7eb/0x12e0 [ 62.699868][ T4311] arch_do_signal_or_restart+0xe6/0x12a0 [ 62.706018][ T4311] exit_to_user_mode_loop+0x9e/0x130 [ 62.711822][ T4311] exit_to_user_mode_prepare+0xee/0x180 [ 62.717883][ T4311] syscall_exit_to_user_mode+0x16/0x40 [ 62.723861][ T4311] do_syscall_64+0x58/0xa0 [ 62.728797][ T4311] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 62.735210][ T4311] [ 62.735210][ T4311] -> #1 (&hdev->req_lock){+.+.}-{3:3}: [ 62.742861][ T4311] __mutex_lock_common+0x1e5/0x2400 [ 62.748579][ T4311] mutex_lock_nested+0x17/0x20 [ 62.753859][ T4311] bg_scan_update+0x44/0x3b0 [ 62.758969][ T4311] process_one_work+0x867/0xff0 [ 62.764339][ T4311] worker_thread+0xad7/0x12a0 [ 62.769537][ T4311] kthread+0x42e/0x520 [ 62.774123][ T4311] ret_from_fork+0x1f/0x30 [ 62.779059][ T4311] [ 62.779059][ T4311] -> #0 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}: [ 62.788867][ T4311] __lock_acquire+0x2c66/0x7b50 [ 62.794244][ T4311] lock_acquire+0x19e/0x400 [ 62.799273][ T4311] __flush_work+0x116/0x210 [ 62.804290][ T4311] __cancel_work_timer+0x3f4/0x560 [ 62.809918][ T4311] hci_request_cancel_all+0xcc/0x300 [ 62.815722][ T4311] hci_dev_do_close+0x4e/0x1020 [ 62.821092][ T4311] hci_rfkill_set_block+0x101/0x180 [ 62.826806][ T4311] rfkill_set_block+0x1c1/0x3c0 [ 62.832174][ T4311] rfkill_fop_write+0x453/0x560 [ 62.837562][ T4311] vfs_write+0x304/0xd70 [ 62.842322][ T4311] ksys_write+0x153/0x260 [ 62.847173][ T4311] do_syscall_64+0x4c/0xa0 [ 62.852114][ T4311] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 62.858528][ T4311] [ 62.858528][ T4311] other info that might help us debug this: [ 62.858528][ T4311] [ 62.868747][ T4311] Chain exists of: [ 62.868747][ T4311] (work_completion)(&hdev->bg_scan_update) --> &data->open_mutex --> rfkill_global_mutex [ 62.868747][ T4311] [ 62.884470][ T4311] Possible unsafe locking scenario: [ 62.884470][ T4311] [ 62.891913][ T4311] CPU0 CPU1 [ 62.897273][ T4311] ---- ---- [ 62.902631][ T4311] lock(rfkill_global_mutex); [ 62.907395][ T4311] lock(&data->open_mutex); [ 62.914500][ T4311] lock(rfkill_global_mutex); [ 62.921790][ T4311] lock((work_completion)(&hdev->bg_scan_update)); [ 62.928375][ T4311] [ 62.928375][ T4311] *** DEADLOCK *** [ 62.928375][ T4311] [ 62.936512][ T4311] 1 lock held by syz.0.17/4311: [ 62.941355][ T4311] #0: ffffffff8d6d6b68 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x1ae/0x560 [ 62.951451][ T4311] [ 62.951451][ T4311] stack backtrace: [ 62.957350][ T4311] CPU: 0 PID: 4311 Comm: syz.0.17 Not tainted syzkaller #0 [ 62.964538][ T4311] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 [ 62.974608][ T4311] Call Trace: [ 62.977882][ T4311] [ 62.980810][ T4311] dump_stack_lvl+0x188/0x250 [ 62.985488][ T4311] ? load_image+0x410/0x410 [ 62.989993][ T4311] ? show_regs_print_info+0x20/0x20 [ 62.995201][ T4311] ? print_circular_bug+0x12b/0x1a0 [ 63.000401][ T4311] check_noncircular+0x296/0x330 [ 63.005338][ T4311] ? look_up_lock_class+0x71/0x110 [ 63.010453][ T4311] ? add_chain_block+0x9b0/0x9b0 [ 63.015391][ T4311] ? lockdep_lock+0xf1/0x1f0 [ 63.019982][ T4311] ? __lock_acquire+0x1305/0x7b50 [ 63.025004][ T4311] ? mark_lock+0x94/0x320 [ 63.029331][ T4311] ? _find_first_zero_bit+0xd1/0xf0 [ 63.034528][ T4311] __lock_acquire+0x2c66/0x7b50 [ 63.039383][ T4311] ? verify_lock_unused+0x140/0x140 [ 63.044587][ T4311] ? verify_lock_unused+0x140/0x140 [ 63.049797][ T4311] lock_acquire+0x19e/0x400 [ 63.054301][ T4311] ? __flush_work+0xfa/0x210 [ 63.058888][ T4311] ? __lock_acquire+0x7b50/0x7b50 [ 63.063918][ T4311] ? read_lock_is_recursive+0x10/0x10 [ 63.069293][ T4311] ? start_flush_work+0x784/0x830 [ 63.074320][ T4311] __flush_work+0x116/0x210 [ 63.078823][ T4311] ? __flush_work+0xfa/0x210 [ 63.083415][ T4311] ? flush_work+0x20/0x20 [ 63.087740][ T4311] ? try_to_grab_pending+0xfb/0x820 [ 63.092938][ T4311] ? mark_lock+0x94/0x320 [ 63.097269][ T4311] ? lockdep_hardirqs_on_prepare+0x448/0x7c0 [ 63.103257][ T4311] ? lock_chain_count+0x20/0x20 [ 63.108111][ T4311] ? mark_lock+0x94/0x320 [ 63.112440][ T4311] ? __cancel_work_timer+0x36a/0x560 [ 63.117729][ T4311] __cancel_work_timer+0x3f4/0x560 [ 63.122837][ T4311] ? cancel_work_sync+0x20/0x20 [ 63.127684][ T4311] ? __cancel_work+0x1f9/0x2e0 [ 63.132446][ T4311] ? lockdep_hardirqs_on+0x94/0x140 [ 63.137646][ T4311] ? __cancel_work+0x27b/0x2e0 [ 63.142409][ T4311] ? cancel_work+0x20/0x20 [ 63.146820][ T4311] hci_request_cancel_all+0xcc/0x300 [ 63.152116][ T4311] hci_dev_do_close+0x4e/0x1020 [ 63.156967][ T4311] ? _raw_spin_unlock_irqrestore+0xc1/0x120 [ 63.162861][ T4311] ? _raw_spin_unlock+0x40/0x40 [ 63.167803][ T4311] hci_rfkill_set_block+0x101/0x180 [ 63.173002][ T4311] ? rcu_lock_release+0x20/0x20 [ 63.177853][ T4311] rfkill_set_block+0x1c1/0x3c0 [ 63.182707][ T4311] rfkill_fop_write+0x453/0x560 [ 63.187556][ T4311] ? rfkill_fop_read+0x560/0x560 [ 63.192490][ T4311] ? common_file_perm+0x160/0x1c0 [ 63.197515][ T4311] ? fsnotify_perm+0x5d/0x560 [ 63.202196][ T4311] ? security_file_permission+0x75/0xa0 [ 63.207766][ T4311] ? rfkill_fop_read+0x560/0x560 [ 63.212700][ T4311] vfs_write+0x304/0xd70 [ 63.217036][ T4311] ? file_end_write+0x250/0x250 [ 63.221888][ T4311] ? __context_tracking_exit+0x4c/0x80 [ 63.227350][ T4311] ? __fdget_pos+0x1e2/0x370 [ 63.231938][ T4311] ksys_write+0x153/0x260 [ 63.236266][ T4311] ? __ia32_sys_read+0x80/0x80 [ 63.241027][ T4311] ? lockdep_hardirqs_on+0x94/0x140 [ 63.246225][ T4311] do_syscall_64+0x4c/0xa0 [ 63.250642][ T4311] ? clear_bhb_loop+0x30/0x80 [ 63.255318][ T4311] ? clear_bhb_loop+0x30/0x80 [ 63.259997][ T4311] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 63.265905][ T4311] RIP: 0033:0x7f8bddd67159 [ 63.270320][ T4311] 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 [ 63.289917][ T4311] RSP: 002b:00007ffd497e47c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 63.298329][ T4311] RAX: ffffffffffffffda RBX: 00007f8bddfeefa0 RCX: 00007f8bddd67159 [ 63.306302][ T4311] RDX: 0000000000000008 RSI: 0000200000000040 RDI: 0000000000000003 [ 63.314377][ T4311] RBP: 00007f8bdddfe06b R08: 0000000000000000 R09: 0000000000000000 [ 63.322345][ T4311] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 63.330311][ T4311] R13: 00007f8bddfeefac R14: 00007f8bddfeefa0 R15: 00007f8bddfeefa0 [ 63.338285][ T4311] [ 63.346522][ T4244] Bluetooth: hci0: command 0x040f tx timeout