Warning: Permanently added '10.128.1.62' (ED25519) to the list of known hosts. 2026/05/30 16:35:27 parsed 1 programs [ 69.932653][ T4202] cgroup: Unknown subsys name 'net' [ 70.066623][ T4202] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size = 127995904 bytes [ 71.283640][ T1423] ieee802154 phy0 wpan0: encryption failed: -22 [ 71.290160][ T1423] ieee802154 phy1 wpan1: encryption failed: -22 [ 71.629750][ T4202] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k FS [ 75.121026][ T154] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 75.129155][ T154] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 75.153664][ T1278] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 75.172941][ T1278] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 75.181806][ T1278] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 75.191782][ T1278] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 75.713918][ T4290] chnl_net:caif_netlink_parms(): no params data found [ 75.763849][ T4290] bridge0: port 1(bridge_slave_0) entered blocking state [ 75.771947][ T4290] bridge0: port 1(bridge_slave_0) entered disabled state [ 75.780132][ T4290] device bridge_slave_0 entered promiscuous mode [ 75.806561][ T4290] bridge0: port 2(bridge_slave_1) entered blocking state [ 75.814015][ T4290] bridge0: port 2(bridge_slave_1) entered disabled state [ 75.822248][ T4290] device bridge_slave_1 entered promiscuous mode [ 75.846891][ T4290] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 75.858394][ T4290] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 75.896462][ T4290] team0: Port device team_slave_0 added [ 75.904484][ T4290] team0: Port device team_slave_1 added [ 75.924855][ T4290] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 75.931925][ T4290] 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. [ 75.957973][ T4290] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 75.988810][ T4290] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 75.995905][ T4290] batman_adv: batadv0: The MTU of interface batadv_slave_1 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. [ 76.022390][ T4290] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 76.053832][ T4290] device hsr_slave_0 entered promiscuous mode [ 76.060742][ T4290] device hsr_slave_1 entered promiscuous mode [ 76.218502][ T4290] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 76.229877][ T4290] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 76.241291][ T4290] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 76.251031][ T4290] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 76.341512][ T4290] 8021q: adding VLAN 0 to HW filter on device bond0 [ 76.356370][ T1278] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 76.366345][ T1278] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 76.378611][ T4290] 8021q: adding VLAN 0 to HW filter on device team0 [ 76.404663][ T1278] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 76.413435][ T1278] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 76.423021][ T1278] bridge0: port 1(bridge_slave_0) entered blocking state [ 76.430242][ T1278] bridge0: port 1(bridge_slave_0) entered forwarding state [ 76.441839][ T1278] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 76.453007][ T1278] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 76.462926][ T1278] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 76.471991][ T1278] bridge0: port 2(bridge_slave_1) entered blocking state [ 76.479097][ T1278] bridge0: port 2(bridge_slave_1) entered forwarding state [ 76.491158][ T1278] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 76.503724][ T1239] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 76.533737][ T1239] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 76.544085][ T1239] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 76.553331][ T1239] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 76.565878][ T1239] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 76.574604][ T1239] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 76.589867][ T586] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 76.598709][ T586] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 76.608519][ T586] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 76.617449][ T586] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 76.629008][ T4290] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 76.762688][ T1239] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 76.770230][ T1239] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 76.784199][ T4290] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 76.806979][ T1239] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 76.827320][ T1239] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 76.852117][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 76.862890][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 76.872641][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 76.880812][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 76.889524][ T4290] device veth0_vlan entered promiscuous mode [ 76.902806][ T4290] device veth1_vlan entered promiscuous mode [ 76.926348][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 76.934757][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 76.945019][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 76.953801][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 76.966602][ T4290] device veth0_macvtap entered promiscuous mode [ 76.977606][ T4290] device veth1_macvtap entered promiscuous mode [ 76.995770][ T4290] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 77.004450][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 77.014055][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 77.023221][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 77.037036][ T4290] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 77.047020][ T586] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 77.063115][ T586] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 77.075247][ T4290] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 77.085550][ T4290] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 77.095641][ T4290] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 77.104686][ T4290] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 77.201711][ T4290] syz-executor (4290) used greatest stack depth: 19480 bytes left 2026/05/30 16:35:37 executed programs: 0 [ 77.952135][ T4306] chnl_net:caif_netlink_parms(): no params data found [ 78.010866][ T4306] bridge0: port 1(bridge_slave_0) entered blocking state [ 78.018218][ T4306] bridge0: port 1(bridge_slave_0) entered disabled state [ 78.026496][ T4306] device bridge_slave_0 entered promiscuous mode [ 78.036405][ T4306] bridge0: port 2(bridge_slave_1) entered blocking state [ 78.043724][ T4306] bridge0: port 2(bridge_slave_1) entered disabled state [ 78.053487][ T4306] device bridge_slave_1 entered promiscuous mode [ 78.075901][ T4306] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 78.087647][ T4306] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 78.116840][ T4306] team0: Port device team_slave_0 added [ 78.127212][ T4306] team0: Port device team_slave_1 added [ 78.155573][ T4306] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 78.166227][ T4306] 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. [ 78.193187][ T4306] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 78.206742][ T4306] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 78.214430][ T4306] 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. [ 78.241080][ T4306] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 78.282604][ T4306] device hsr_slave_0 entered promiscuous mode [ 78.289487][ T4306] device hsr_slave_1 entered promiscuous mode [ 78.296541][ T4306] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 78.304921][ T4306] Cannot create hsr debugfs directory [ 78.400840][ T4306] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 79.841180][ T4265] Bluetooth: hci0: command 0x0409 tx timeout [ 81.048267][ T4306] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 81.745959][ T4306] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 81.818573][ T4306] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 81.920835][ T4265] Bluetooth: hci0: command 0x041b tx timeout [ 81.929750][ T4306] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 81.940121][ T4306] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 81.949420][ T4306] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 81.972004][ T4306] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 82.042439][ T4306] 8021q: adding VLAN 0 to HW filter on device bond0 [ 82.054819][ T586] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 82.063156][ T586] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 82.091007][ T4306] 8021q: adding VLAN 0 to HW filter on device team0 [ 82.101830][ T586] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 82.110800][ T586] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 82.119149][ T586] bridge0: port 1(bridge_slave_0) entered blocking state [ 82.126265][ T586] bridge0: port 1(bridge_slave_0) entered forwarding state [ 82.151080][ T586] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 82.164342][ T586] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 82.173199][ T586] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 82.181822][ T586] bridge0: port 2(bridge_slave_1) entered blocking state [ 82.188912][ T586] bridge0: port 2(bridge_slave_1) entered forwarding state [ 82.198641][ T586] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 82.223247][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 82.235880][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 82.245476][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 82.256315][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 82.267180][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 82.276338][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 82.306688][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 82.315383][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 82.326753][ T1239] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 82.335478][ T1239] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 82.346025][ T4306] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 82.469019][ T586] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 82.476604][ T586] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 82.489091][ T9] device hsr_slave_0 left promiscuous mode [ 82.497346][ T9] device hsr_slave_1 left promiscuous mode [ 82.504802][ T9] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 82.512354][ T9] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 82.522874][ T9] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 82.530274][ T9] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 82.538199][ T9] device bridge_slave_1 left promiscuous mode [ 82.545325][ T9] bridge0: port 2(bridge_slave_1) entered disabled state [ 82.559029][ T9] device bridge_slave_0 left promiscuous mode [ 82.566351][ T9] bridge0: port 1(bridge_slave_0) entered disabled state [ 82.585839][ T9] device veth1_macvtap left promiscuous mode [ 82.592562][ T9] device veth0_macvtap left promiscuous mode [ 82.598608][ T9] device veth1_vlan left promiscuous mode [ 82.604635][ T9] device veth0_vlan left promiscuous mode [ 82.767710][ T9] team0 (unregistering): Port device team_slave_1 removed [ 82.781716][ T9] team0 (unregistering): Port device team_slave_0 removed [ 82.796971][ T9] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 82.812994][ T9] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 82.868587][ T9] bond0 (unregistering): Released all slaves [ 82.946625][ T4306] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 82.967276][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 82.976451][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 82.997601][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 83.007222][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 83.015771][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 83.023987][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 83.033769][ T4306] device veth0_vlan entered promiscuous mode [ 83.046738][ T4306] device veth1_vlan entered promiscuous mode [ 83.066024][ T1239] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 83.077038][ T1239] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 83.091479][ T4306] device veth0_macvtap entered promiscuous mode [ 83.098817][ T586] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 83.108807][ T586] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 83.119185][ T586] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 83.131914][ T4306] device veth1_macvtap entered promiscuous mode [ 83.154811][ T4306] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 83.162754][ T1239] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 83.171914][ T1239] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 83.180822][ T1239] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 83.193316][ T4306] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 83.200857][ T1239] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 83.210089][ T1239] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 83.225430][ T4306] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 83.237521][ T4306] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 83.247359][ T4306] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 83.257304][ T4306] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 83.311693][ T586] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 83.319564][ T586] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 83.332641][ T1239] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 83.359211][ T586] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 83.367882][ T586] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 83.376457][ T1239] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 83.526553][ T4318] [ 83.528950][ T4318] ====================================================== [ 83.536073][ T4318] WARNING: possible circular locking dependency detected [ 83.543122][ T4318] syzkaller #0 Not tainted [ 83.547554][ T4318] ------------------------------------------------------ [ 83.554598][ T4318] syz.0.17/4318 is trying to acquire lock: [ 83.560413][ T4318] ffff888077948c28 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}, at: __flush_work+0xfa/0x210 [ 83.571504][ T4318] [ 83.571504][ T4318] but task is already holding lock: [ 83.578884][ T4318] ffffffff8d6c65a8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x18b/0x560 [ 83.588579][ T4318] [ 83.588579][ T4318] which lock already depends on the new lock. [ 83.588579][ T4318] [ 83.599003][ T4318] [ 83.599003][ T4318] the existing dependency chain (in reverse order) is: [ 83.608027][ T4318] [ 83.608027][ T4318] -> #4 (rfkill_global_mutex){+.+.}-{3:3}: [ 83.616039][ T4318] __mutex_lock_common+0x1e3/0x2400 [ 83.621786][ T4318] mutex_lock_nested+0x17/0x20 [ 83.627096][ T4318] rfkill_register+0x33/0x980 [ 83.632321][ T4318] hci_register_dev+0x452/0x970 [ 83.637726][ T4318] vhci_create_device+0x32c/0x5c0 [ 83.643299][ T4318] vhci_write+0x391/0x450 [ 83.648178][ T4318] vfs_write+0x745/0xd60 [ 83.652969][ T4318] ksys_write+0x152/0x260 [ 83.657842][ T4318] do_syscall_64+0x4c/0xa0 [ 83.662803][ T4318] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 83.669247][ T4318] [ 83.669247][ T4318] -> #3 (&data->open_mutex){+.+.}-{3:3}: [ 83.677089][ T4318] __mutex_lock_common+0x1e3/0x2400 [ 83.682841][ T4318] mutex_lock_nested+0x17/0x20 [ 83.688157][ T4318] vhci_send_frame+0x88/0x100 [ 83.693380][ T4318] hci_send_frame+0x1a9/0x2e0 [ 83.698599][ T4318] hci_tx_work+0x9f9/0x1710 [ 83.703643][ T4318] process_one_work+0x85f/0x1010 [ 83.709141][ T4318] worker_thread+0xaa6/0x1290 [ 83.714362][ T4318] kthread+0x436/0x520 [ 83.718998][ T4318] ret_from_fork+0x1f/0x30 [ 83.723963][ T4318] [ 83.723963][ T4318] -> #2 ((work_completion)(&hdev->tx_work)){+.+.}-{0:0}: [ 83.733203][ T4318] __flush_work+0x116/0x210 [ 83.738261][ T4318] hci_dev_do_close+0x1e7/0x1030 [ 83.743749][ T4318] hci_unregister_dev+0x2d7/0x580 [ 83.749334][ T4318] vhci_release+0x73/0xc0 [ 83.754205][ T4318] __fput+0x234/0x930 [ 83.758734][ T4318] task_work_run+0x125/0x1a0 [ 83.763874][ T4318] do_exit+0x626/0x20c0 [ 83.768574][ T4318] do_group_exit+0x12e/0x300 [ 83.773733][ T4318] get_signal+0x6d6/0x12d0 [ 83.778695][ T4318] arch_do_signal_or_restart+0xe7/0x12c0 [ 83.784881][ T4318] exit_to_user_mode_loop+0x9e/0x130 [ 83.790721][ T4318] exit_to_user_mode_prepare+0xee/0x180 [ 83.796820][ T4318] syscall_exit_to_user_mode+0x16/0x40 [ 83.802824][ T4318] do_syscall_64+0x58/0xa0 [ 83.807789][ T4318] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 83.814232][ T4318] [ 83.814232][ T4318] -> #1 (&hdev->req_lock){+.+.}-{3:3}: [ 83.821914][ T4318] __mutex_lock_common+0x1e3/0x2400 [ 83.827661][ T4318] mutex_lock_nested+0x17/0x20 [ 83.832965][ T4318] bg_scan_update+0x44/0x3b0 [ 83.838101][ T4318] process_one_work+0x85f/0x1010 [ 83.843600][ T4318] worker_thread+0xaa6/0x1290 [ 83.848820][ T4318] kthread+0x436/0x520 [ 83.853431][ T4318] ret_from_fork+0x1f/0x30 [ 83.858392][ T4318] [ 83.858392][ T4318] -> #0 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}: [ 83.868237][ T4318] __lock_acquire+0x2c42/0x7d10 [ 83.873633][ T4318] lock_acquire+0x19e/0x400 [ 83.878692][ T4318] __flush_work+0x116/0x210 [ 83.883735][ T4318] __cancel_work_timer+0x3f4/0x560 [ 83.889388][ T4318] hci_request_cancel_all+0xcc/0x300 [ 83.895217][ T4318] hci_dev_do_close+0x4e/0x1030 [ 83.900605][ T4318] hci_rfkill_set_block+0x10a/0x190 [ 83.906350][ T4318] rfkill_set_block+0x1c9/0x3d0 [ 83.911751][ T4318] rfkill_fop_write+0x452/0x560 [ 83.917139][ T4318] vfs_write+0x30b/0xd60 [ 83.921924][ T4318] ksys_write+0x152/0x260 [ 83.926801][ T4318] do_syscall_64+0x4c/0xa0 [ 83.931756][ T4318] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 83.938212][ T4318] [ 83.938212][ T4318] other info that might help us debug this: [ 83.938212][ T4318] [ 83.948453][ T4318] Chain exists of: [ 83.948453][ T4318] (work_completion)(&hdev->bg_scan_update) --> &data->open_mutex --> rfkill_global_mutex [ 83.948453][ T4318] [ 83.964210][ T4318] Possible unsafe locking scenario: [ 83.964210][ T4318] [ 83.971681][ T4318] CPU0 CPU1 [ 83.977075][ T4318] ---- ---- [ 83.982454][ T4318] lock(rfkill_global_mutex); [ 83.987255][ T4318] lock(&data->open_mutex); [ 83.994387][ T4318] lock(rfkill_global_mutex); [ 84.001792][ T4318] lock((work_completion)(&hdev->bg_scan_update)); [ 84.008405][ T4318] [ 84.008405][ T4318] *** DEADLOCK *** [ 84.008405][ T4318] [ 84.016559][ T4318] 1 lock held by syz.0.17/4318: [ 84.021421][ T4318] #0: ffffffff8d6c65a8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x18b/0x560 [ 84.031550][ T4318] [ 84.031550][ T4318] stack backtrace: [ 84.037471][ T4318] CPU: 0 PID: 4318 Comm: syz.0.17 Not tainted syzkaller #0 [ 84.045730][ T4318] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 84.055817][ T4318] Call Trace: [ 84.059122][ T4318] [ 84.062451][ T4318] dump_stack_lvl+0x188/0x250 [ 84.067182][ T4318] ? load_image+0x400/0x400 [ 84.071717][ T4318] ? show_regs_print_info+0x20/0x20 [ 84.076938][ T4318] ? print_circular_bug+0x12b/0x1a0 [ 84.082160][ T4318] check_noncircular+0x296/0x330 [ 84.087119][ T4318] ? look_up_lock_class+0x71/0x110 [ 84.092256][ T4318] ? add_chain_block+0x940/0x940 [ 84.097219][ T4318] ? lockdep_lock+0xf1/0x1f0 [ 84.101837][ T4318] ? __lock_acquire+0x12e8/0x7d10 [ 84.107031][ T4318] ? mark_lock+0x94/0x320 [ 84.111390][ T4318] __lock_acquire+0x2c42/0x7d10 [ 84.116279][ T4318] ? verify_lock_unused+0x140/0x140 [ 84.121502][ T4318] ? verify_lock_unused+0x140/0x140 [ 84.126730][ T4318] ? mark_lock+0x94/0x320 [ 84.131179][ T4318] lock_acquire+0x19e/0x400 [ 84.135712][ T4318] ? __flush_work+0xfa/0x210 [ 84.140325][ T4318] ? __lock_acquire+0x7d10/0x7d10 [ 84.145379][ T4318] ? read_lock_is_recursive+0x10/0x10 [ 84.150786][ T4318] ? start_flush_work+0x776/0x820 [ 84.155841][ T4318] __flush_work+0x116/0x210 [ 84.160369][ T4318] ? __flush_work+0xfa/0x210 [ 84.164985][ T4318] ? flush_work+0x20/0x20 [ 84.169342][ T4318] ? try_to_grab_pending+0xfa/0x7f0 [ 84.174569][ T4318] ? mark_lock+0x94/0x320 [ 84.178920][ T4318] ? lockdep_hardirqs_on_prepare+0x409/0x770 [ 84.184931][ T4318] ? lock_chain_count+0x20/0x20 [ 84.189809][ T4318] ? mark_lock+0x94/0x320 [ 84.194167][ T4318] ? __cancel_work_timer+0x36a/0x560 [ 84.199477][ T4318] __cancel_work_timer+0x3f4/0x560 [ 84.204613][ T4318] ? cancel_work_sync+0x20/0x20 [ 84.209495][ T4318] ? __cancel_work+0x1f9/0x2e0 [ 84.214287][ T4318] ? lockdep_hardirqs_on+0x94/0x140 [ 84.219599][ T4318] ? __cancel_work+0x27b/0x2e0 [ 84.224391][ T4318] ? cancel_work+0x20/0x20 [ 84.228829][ T4318] ? lock_chain_count+0x20/0x20 [ 84.233711][ T4318] hci_request_cancel_all+0xcc/0x300 [ 84.239033][ T4318] hci_dev_do_close+0x4e/0x1030 [ 84.243910][ T4318] ? _raw_spin_unlock_irqrestore+0xc1/0x120 [ 84.249831][ T4318] ? _raw_spin_unlock+0x40/0x40 [ 84.254708][ T4318] hci_rfkill_set_block+0x10a/0x190 [ 84.259934][ T4318] ? rcu_lock_release+0x20/0x20 [ 84.264811][ T4318] rfkill_set_block+0x1c9/0x3d0 [ 84.269703][ T4318] rfkill_fop_write+0x452/0x560 [ 84.274573][ T4318] ? rfkill_fop_read+0x520/0x520 [ 84.279526][ T4318] ? common_file_perm+0xc0/0x1c0 [ 84.284482][ T4318] ? fsnotify_perm+0x5d/0x560 [ 84.289184][ T4318] ? security_file_permission+0x75/0xa0 [ 84.294754][ T4318] ? rfkill_fop_read+0x520/0x520 [ 84.299712][ T4318] vfs_write+0x30b/0xd60 [ 84.303975][ T4318] ? file_end_write+0x250/0x250 [ 84.308949][ T4318] ? __context_tracking_exit+0x4c/0x80 [ 84.314443][ T4318] ? __lock_acquire+0x7d10/0x7d10 [ 84.319494][ T4318] ? __fdget_pos+0x1e2/0x370 [ 84.324123][ T4318] ksys_write+0x152/0x260 [ 84.328480][ T4318] ? __ia32_sys_read+0x80/0x80 [ 84.333274][ T4318] ? lockdep_hardirqs_on+0x94/0x140 [ 84.338493][ T4318] do_syscall_64+0x4c/0xa0 [ 84.342929][ T4318] ? clear_bhb_loop+0x30/0x80 [ 84.347635][ T4318] ? clear_bhb_loop+0x30/0x80 [ 84.352347][ T4318] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 84.358386][ T4318] RIP: 0033:0x7f7b8c197e59 [ 84.362833][ T4318] 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 [ 84.382637][ T4318] RSP: 002b:00007fffd1c247c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 84.391085][ T4318] RAX: ffffffffffffffda RBX: 00007f7b8c410fa0 RCX: 00007f7b8c197e59 [ 84.399083][ T4318] RDX: 0000000000000008 RSI: 0000200000000180 RDI: 0000000000000003 [ 84.407078][ T4318] RBP: 00007f7b8c22dd6f R08: 0000000000000000 R09: 0000000000000000 [ 84.415089][ T4318] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 84.423087][ T4318] R13: 00007f7b8c410fac R14: 00007f7b8c410fa0 R15: 00007f7b8c410fa0 [ 84.431093][ T4318] [ 84.451180][ T4280] Bluetooth: hci0: command 0x040f tx timeout