Warning: Permanently added '10.128.0.55' (ED25519) to the list of known hosts. 2026/06/04 13:49:07 parsed 1 programs [ 53.131251][ T4201] cgroup: Unknown subsys name 'net' [ 53.266384][ T4201] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size = 127995904 bytes [ 54.524800][ T4201] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k FS [ 56.531465][ T9] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 56.539395][ T9] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 56.567413][ T417] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 56.583435][ T417] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 56.591812][ T417] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 56.600004][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 57.726875][ T4258] chnl_net:caif_netlink_parms(): no params data found [ 57.785437][ T4258] bridge0: port 1(bridge_slave_0) entered blocking state [ 57.793098][ T4258] bridge0: port 1(bridge_slave_0) entered disabled state [ 57.801118][ T4258] device bridge_slave_0 entered promiscuous mode [ 57.816789][ T4258] bridge0: port 2(bridge_slave_1) entered blocking state [ 57.824043][ T4258] bridge0: port 2(bridge_slave_1) entered disabled state [ 57.832146][ T4258] device bridge_slave_1 entered promiscuous mode [ 57.860900][ T4258] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 57.872733][ T4258] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 57.903627][ T4258] team0: Port device team_slave_0 added [ 57.914131][ T4258] team0: Port device team_slave_1 added [ 57.940132][ T4258] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 57.947182][ T4258] 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. [ 57.973154][ T4258] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 57.987260][ T4258] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 57.994292][ T4258] 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. [ 58.020300][ T4258] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 58.047552][ T4258] device hsr_slave_0 entered promiscuous mode [ 58.054587][ T4258] device hsr_slave_1 entered promiscuous mode [ 58.131842][ T4258] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 58.141466][ T4258] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 58.150405][ T4258] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 58.159006][ T4258] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 58.178090][ T4258] bridge0: port 2(bridge_slave_1) entered blocking state [ 58.185235][ T4258] bridge0: port 2(bridge_slave_1) entered forwarding state [ 58.193151][ T4258] bridge0: port 1(bridge_slave_0) entered blocking state [ 58.200282][ T4258] bridge0: port 1(bridge_slave_0) entered forwarding state [ 58.236910][ T4258] 8021q: adding VLAN 0 to HW filter on device bond0 [ 58.251695][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 58.260275][ T9] bridge0: port 1(bridge_slave_0) entered disabled state [ 58.269137][ T9] bridge0: port 2(bridge_slave_1) entered disabled state [ 58.280303][ T4258] 8021q: adding VLAN 0 to HW filter on device team0 [ 58.290506][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 58.299107][ T9] bridge0: port 1(bridge_slave_0) entered blocking state [ 58.306183][ T9] bridge0: port 1(bridge_slave_0) entered forwarding state [ 58.323205][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 58.331900][ T9] bridge0: port 2(bridge_slave_1) entered blocking state [ 58.338943][ T9] bridge0: port 2(bridge_slave_1) entered forwarding state [ 58.352570][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 58.361774][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 58.372586][ T417] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 58.385101][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 58.414167][ T417] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 58.425048][ T4258] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 58.513372][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 58.520837][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 58.549721][ T4258] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 58.580993][ T417] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 58.590018][ T417] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 58.605859][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 58.615144][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 58.624484][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 58.634927][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 58.645057][ T4258] device veth0_vlan entered promiscuous mode [ 58.657694][ T4258] device veth1_vlan entered promiscuous mode [ 58.686981][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 58.695127][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 58.703774][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 58.712552][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 58.723094][ T4258] device veth0_macvtap entered promiscuous mode [ 58.751601][ T4258] device veth1_macvtap entered promiscuous mode [ 58.765868][ T4258] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 58.774160][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 58.782759][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 58.790523][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 58.799308][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 58.815124][ T4258] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 58.823099][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 58.832385][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 58.843971][ T4258] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 58.853382][ T4258] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 58.862254][ T4258] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 58.870930][ T4258] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 58.993652][ T4258] syz-executor (4258) used greatest stack depth: 19480 bytes left 2026/06/04 13:49:15 executed programs: 0 [ 60.008488][ T4308] chnl_net:caif_netlink_parms(): no params data found [ 60.062365][ T4308] bridge0: port 1(bridge_slave_0) entered blocking state [ 60.069530][ T4308] bridge0: port 1(bridge_slave_0) entered disabled state [ 60.077911][ T4308] device bridge_slave_0 entered promiscuous mode [ 60.086835][ T4308] bridge0: port 2(bridge_slave_1) entered blocking state [ 60.094225][ T4308] bridge0: port 2(bridge_slave_1) entered disabled state [ 60.102631][ T4308] device bridge_slave_1 entered promiscuous mode [ 60.127859][ T4308] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 60.139200][ T4308] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 60.165928][ T4308] team0: Port device team_slave_0 added [ 60.174814][ T4308] team0: Port device team_slave_1 added [ 60.195235][ T4308] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 60.202215][ T4308] batman_adv: batadv0: The MTU of interface batadv_slave_0 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. [ 60.228488][ T4308] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 60.240983][ T4308] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 60.248997][ T4308] batman_adv: batadv0: The MTU of interface batadv_slave_1 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. [ 60.275342][ T4308] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 60.312788][ T4308] device hsr_slave_0 entered promiscuous mode [ 60.319537][ T4308] device hsr_slave_1 entered promiscuous mode [ 60.327247][ T4308] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 60.335645][ T4308] Cannot create hsr debugfs directory [ 60.420423][ T4308] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 61.921937][ T4316] Bluetooth: hci0: command 0x0409 tx timeout [ 63.298194][ T4308] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 63.697121][ T4308] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 63.748805][ T4308] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 63.816589][ T4308] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 63.825682][ T4308] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 63.835285][ T4308] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 63.845194][ T4308] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 63.896754][ T4308] 8021q: adding VLAN 0 to HW filter on device bond0 [ 63.919758][ T1243] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 63.928691][ T1243] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 63.939141][ T4308] 8021q: adding VLAN 0 to HW filter on device team0 [ 63.948720][ T417] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 63.957674][ T417] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 63.966294][ T417] bridge0: port 1(bridge_slave_0) entered blocking state [ 63.973386][ T417] bridge0: port 1(bridge_slave_0) entered forwarding state [ 63.981971][ T417] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 63.998657][ T417] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 64.002100][ T4266] Bluetooth: hci0: command 0x041b tx timeout [ 64.014239][ T417] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 64.022991][ T417] bridge0: port 2(bridge_slave_1) entered blocking state [ 64.030039][ T417] bridge0: port 2(bridge_slave_1) entered forwarding state [ 64.040443][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 64.059372][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 64.070266][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 64.079821][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 64.088479][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 64.099430][ T1243] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 64.108428][ T1243] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 64.132960][ T1243] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 64.141578][ T1243] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 64.154017][ T1243] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 64.162687][ T1243] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 64.171766][ T4308] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 64.260688][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 64.268517][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 64.279491][ T4308] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 64.303030][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 64.312691][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 64.328667][ T417] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 64.337331][ T417] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 64.347399][ T417] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 64.355539][ T417] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 64.366059][ T4308] device veth0_vlan entered promiscuous mode [ 64.377276][ T144] device hsr_slave_0 left promiscuous mode [ 64.383800][ T144] device hsr_slave_1 left promiscuous mode [ 64.390115][ T144] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 64.397934][ T144] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 64.407854][ T144] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 64.415890][ T144] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 64.423863][ T144] device bridge_slave_1 left promiscuous mode [ 64.430625][ T144] bridge0: port 2(bridge_slave_1) entered disabled state [ 64.444831][ T144] device bridge_slave_0 left promiscuous mode [ 64.450977][ T144] bridge0: port 1(bridge_slave_0) entered disabled state [ 64.467474][ T144] device veth1_macvtap left promiscuous mode [ 64.474326][ T144] device veth0_macvtap left promiscuous mode [ 64.480359][ T144] device veth1_vlan left promiscuous mode [ 64.486923][ T144] device veth0_vlan left promiscuous mode [ 64.616245][ T144] team0 (unregistering): Port device team_slave_1 removed [ 64.627319][ T144] team0 (unregistering): Port device team_slave_0 removed [ 64.640860][ T144] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 64.656187][ T144] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 64.703497][ T144] bond0 (unregistering): Released all slaves [ 64.750717][ T4308] device veth1_vlan entered promiscuous mode [ 64.769208][ T417] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 64.777669][ T417] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 64.785874][ T417] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 64.794687][ T417] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 64.807248][ T4308] device veth0_macvtap entered promiscuous mode [ 64.816430][ T4308] device veth1_macvtap entered promiscuous mode [ 64.832283][ T4308] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 64.841832][ T417] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 64.850062][ T417] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 64.861098][ T417] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 64.872459][ T417] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 64.883206][ T4308] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 64.891839][ T417] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 64.900342][ T417] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 64.910923][ T4308] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 64.920178][ T4308] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 64.929092][ T4308] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 64.938174][ T4308] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 64.994651][ T1243] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 65.004632][ T1243] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 65.019325][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 65.049038][ T417] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 65.057064][ T417] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 65.064846][ T1243] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 65.154907][ T4324] [ 65.157256][ T4324] ====================================================== [ 65.164262][ T4324] WARNING: possible circular locking dependency detected [ 65.171279][ T4324] syzkaller #0 Not tainted [ 65.175687][ T4324] ------------------------------------------------------ [ 65.182692][ T4324] syz.0.17/4324 is trying to acquire lock: [ 65.188573][ T4324] ffff888020a11028 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}, at: __flush_work+0xfa/0x210 [ 65.199633][ T4324] [ 65.199633][ T4324] but task is already holding lock: [ 65.206988][ T4324] ffffffff8d6c73e8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x18b/0x560 [ 65.216647][ T4324] [ 65.216647][ T4324] which lock already depends on the new lock. [ 65.216647][ T4324] [ 65.227042][ T4324] [ 65.227042][ T4324] the existing dependency chain (in reverse order) is: [ 65.236060][ T4324] [ 65.236060][ T4324] -> #4 (rfkill_global_mutex){+.+.}-{3:3}: [ 65.244059][ T4324] __mutex_lock_common+0x1e3/0x2400 [ 65.249786][ T4324] mutex_lock_nested+0x17/0x20 [ 65.255076][ T4324] rfkill_register+0x33/0x980 [ 65.260276][ T4324] hci_register_dev+0x452/0x970 [ 65.265646][ T4324] vhci_create_device+0x32c/0x5c0 [ 65.271388][ T4324] vhci_write+0x391/0x450 [ 65.276254][ T4324] vfs_write+0x745/0xd60 [ 65.281019][ T4324] ksys_write+0x152/0x260 [ 65.285882][ T4324] do_syscall_64+0x4c/0xa0 [ 65.290821][ T4324] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 65.297244][ T4324] [ 65.297244][ T4324] -> #3 (&data->open_mutex){+.+.}-{3:3}: [ 65.305068][ T4324] __mutex_lock_common+0x1e3/0x2400 [ 65.310841][ T4324] mutex_lock_nested+0x17/0x20 [ 65.316138][ T4324] vhci_send_frame+0x88/0x100 [ 65.321346][ T4324] hci_send_frame+0x1a9/0x2e0 [ 65.326559][ T4324] hci_tx_work+0x9f9/0x1710 [ 65.331586][ T4324] process_one_work+0x85f/0x1010 [ 65.337046][ T4324] worker_thread+0xaa6/0x1290 [ 65.342254][ T4324] kthread+0x436/0x520 [ 65.346944][ T4324] ret_from_fork+0x1f/0x30 [ 65.351886][ T4324] [ 65.351886][ T4324] -> #2 ((work_completion)(&hdev->tx_work)){+.+.}-{0:0}: [ 65.361184][ T4324] __flush_work+0x116/0x210 [ 65.366219][ T4324] hci_dev_do_close+0x1e7/0x1030 [ 65.371690][ T4324] hci_unregister_dev+0x2eb/0x590 [ 65.377252][ T4324] vhci_release+0x73/0xc0 [ 65.382118][ T4324] __fput+0x234/0x930 [ 65.386621][ T4324] task_work_run+0x125/0x1a0 [ 65.391824][ T4324] do_exit+0x626/0x20c0 [ 65.396502][ T4324] do_group_exit+0x12e/0x300 [ 65.401629][ T4324] get_signal+0x6d6/0x12d0 [ 65.406569][ T4324] arch_do_signal_or_restart+0xe7/0x12c0 [ 65.412738][ T4324] exit_to_user_mode_loop+0x9e/0x130 [ 65.418543][ T4324] exit_to_user_mode_prepare+0xee/0x180 [ 65.424614][ T4324] syscall_exit_to_user_mode+0x16/0x40 [ 65.430685][ T4324] do_syscall_64+0x58/0xa0 [ 65.435627][ T4324] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 65.442044][ T4324] [ 65.442044][ T4324] -> #1 (&hdev->req_lock){+.+.}-{3:3}: [ 65.449687][ T4324] __mutex_lock_common+0x1e3/0x2400 [ 65.455408][ T4324] mutex_lock_nested+0x17/0x20 [ 65.460692][ T4324] bg_scan_update+0x44/0x3b0 [ 65.465806][ T4324] process_one_work+0x85f/0x1010 [ 65.471268][ T4324] worker_thread+0xaa6/0x1290 [ 65.476462][ T4324] kthread+0x436/0x520 [ 65.481126][ T4324] ret_from_fork+0x1f/0x30 [ 65.486065][ T4324] [ 65.486065][ T4324] -> #0 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}: [ 65.495880][ T4324] __lock_acquire+0x2c42/0x7d10 [ 65.501256][ T4324] lock_acquire+0x19e/0x400 [ 65.506286][ T4324] __flush_work+0x116/0x210 [ 65.511307][ T4324] __cancel_work_timer+0x3f4/0x560 [ 65.516936][ T4324] hci_request_cancel_all+0xcc/0x300 [ 65.522743][ T4324] hci_dev_do_close+0x4e/0x1030 [ 65.528111][ T4324] hci_rfkill_set_block+0x10a/0x190 [ 65.533829][ T4324] rfkill_set_block+0x1c9/0x3d0 [ 65.539205][ T4324] rfkill_fop_write+0x452/0x560 [ 65.544574][ T4324] vfs_write+0x30b/0xd60 [ 65.549347][ T4324] ksys_write+0x152/0x260 [ 65.554198][ T4324] do_syscall_64+0x4c/0xa0 [ 65.559135][ T4324] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 65.565547][ T4324] [ 65.565547][ T4324] other info that might help us debug this: [ 65.565547][ T4324] [ 65.575763][ T4324] Chain exists of: [ 65.575763][ T4324] (work_completion)(&hdev->bg_scan_update) --> &data->open_mutex --> rfkill_global_mutex [ 65.575763][ T4324] [ 65.591487][ T4324] Possible unsafe locking scenario: [ 65.591487][ T4324] [ 65.598937][ T4324] CPU0 CPU1 [ 65.604302][ T4324] ---- ---- [ 65.609660][ T4324] lock(rfkill_global_mutex); [ 65.614422][ T4324] lock(&data->open_mutex); [ 65.621528][ T4324] lock(rfkill_global_mutex); [ 65.628804][ T4324] lock((work_completion)(&hdev->bg_scan_update)); [ 65.635391][ T4324] [ 65.635391][ T4324] *** DEADLOCK *** [ 65.635391][ T4324] [ 65.643522][ T4324] 1 lock held by syz.0.17/4324: [ 65.648361][ T4324] #0: ffffffff8d6c73e8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x18b/0x560 [ 65.658457][ T4324] [ 65.658457][ T4324] stack backtrace: [ 65.664356][ T4324] CPU: 1 PID: 4324 Comm: syz.0.17 Not tainted syzkaller #0 [ 65.671548][ T4324] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 65.681612][ T4324] Call Trace: [ 65.684884][ T4324] [ 65.687814][ T4324] dump_stack_lvl+0x188/0x250 [ 65.692500][ T4324] ? load_image+0x400/0x400 [ 65.697005][ T4324] ? show_regs_print_info+0x20/0x20 [ 65.702207][ T4324] ? print_circular_bug+0x12b/0x1a0 [ 65.707410][ T4324] check_noncircular+0x296/0x330 [ 65.712352][ T4324] ? look_up_lock_class+0x71/0x110 [ 65.717471][ T4324] ? add_chain_block+0x940/0x940 [ 65.722414][ T4324] ? lockdep_lock+0xf1/0x1f0 [ 65.727005][ T4324] ? __lock_acquire+0x12e8/0x7d10 [ 65.732031][ T4324] ? mark_lock+0x94/0x320 [ 65.736358][ T4324] ? _find_first_zero_bit+0xce/0xf0 [ 65.741562][ T4324] __lock_acquire+0x2c42/0x7d10 [ 65.746425][ T4324] ? verify_lock_unused+0x140/0x140 [ 65.751628][ T4324] ? verify_lock_unused+0x140/0x140 [ 65.756838][ T4324] ? mark_lock+0x94/0x320 [ 65.761173][ T4324] lock_acquire+0x19e/0x400 [ 65.765675][ T4324] ? __flush_work+0xfa/0x210 [ 65.770444][ T4324] ? __lock_acquire+0x7d10/0x7d10 [ 65.775477][ T4324] ? read_lock_is_recursive+0x10/0x10 [ 65.780856][ T4324] ? start_flush_work+0x776/0x820 [ 65.785884][ T4324] __flush_work+0x116/0x210 [ 65.790390][ T4324] ? __flush_work+0xfa/0x210 [ 65.794981][ T4324] ? flush_work+0x20/0x20 [ 65.799310][ T4324] ? try_to_grab_pending+0xfa/0x7f0 [ 65.804505][ T4324] ? mark_lock+0x94/0x320 [ 65.808841][ T4324] ? lockdep_hardirqs_on_prepare+0x409/0x770 [ 65.814832][ T4324] ? lock_chain_count+0x20/0x20 [ 65.819688][ T4324] ? mark_lock+0x94/0x320 [ 65.824026][ T4324] ? __cancel_work_timer+0x36a/0x560 [ 65.829401][ T4324] __cancel_work_timer+0x3f4/0x560 [ 65.834515][ T4324] ? cancel_work_sync+0x20/0x20 [ 65.839371][ T4324] ? __cancel_work+0x1f9/0x2e0 [ 65.844132][ T4324] ? lockdep_hardirqs_on+0x94/0x140 [ 65.849342][ T4324] ? __cancel_work+0x27b/0x2e0 [ 65.854107][ T4324] ? cancel_work+0x20/0x20 [ 65.858523][ T4324] ? lock_chain_count+0x20/0x20 [ 65.863375][ T4324] hci_request_cancel_all+0xcc/0x300 [ 65.868660][ T4324] hci_dev_do_close+0x4e/0x1030 [ 65.873537][ T4324] ? _raw_spin_unlock_irqrestore+0xc1/0x120 [ 65.879431][ T4324] ? _raw_spin_unlock+0x40/0x40 [ 65.884283][ T4324] hci_rfkill_set_block+0x10a/0x190 [ 65.889482][ T4324] ? rcu_lock_release+0x20/0x20 [ 65.894337][ T4324] rfkill_set_block+0x1c9/0x3d0 [ 65.899198][ T4324] rfkill_fop_write+0x452/0x560 [ 65.904053][ T4324] ? rfkill_fop_read+0x520/0x520 [ 65.908990][ T4324] ? common_file_perm+0xb0/0x1c0 [ 65.913932][ T4324] ? fsnotify_perm+0x5d/0x560 [ 65.918611][ T4324] ? security_file_permission+0x75/0xa0 [ 65.924160][ T4324] ? rfkill_fop_read+0x520/0x520 [ 65.929098][ T4324] vfs_write+0x30b/0xd60 [ 65.933356][ T4324] ? file_end_write+0x250/0x250 [ 65.938210][ T4324] ? __context_tracking_exit+0x4c/0x80 [ 65.943675][ T4324] ? __lock_acquire+0x7d10/0x7d10 [ 65.948707][ T4324] ? __fdget_pos+0x1e2/0x370 [ 65.953297][ T4324] ksys_write+0x152/0x260 [ 65.957629][ T4324] ? __ia32_sys_read+0x80/0x80 [ 65.962393][ T4324] ? lockdep_hardirqs_on+0x94/0x140 [ 65.967596][ T4324] do_syscall_64+0x4c/0xa0 [ 65.972017][ T4324] ? clear_bhb_loop+0x30/0x80 [ 65.976694][ T4324] ? clear_bhb_loop+0x30/0x80 [ 65.981375][ T4324] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 65.987283][ T4324] RIP: 0033:0x7f9b82f31e59 [ 65.991704][ T4324] 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 [ 66.011306][ T4324] RSP: 002b:00007ffe14c55da8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 66.019722][ T4324] RAX: ffffffffffffffda RBX: 00007f9b831aafa0 RCX: 00007f9b82f31e59 [ 66.027695][ T4324] RDX: 0000000000000008 RSI: 0000200000000000 RDI: 0000000000000003 [ 66.035676][ T4324] RBP: 00007f9b82fc7d6f R08: 0000000000000000 R09: 0000000000000000 [ 66.043648][ T4324] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 66.051624][ T4324] R13: 00007f9b831aafac R14: 00007f9b831aafa0 R15: 00007f9b831aafa0 [ 66.059603][ T4324] [ 66.090192][ T4281] Bluetooth: hci0: command 0x040f tx timeout