Warning: Permanently added '10.128.1.115' (ED25519) to the list of known hosts. 2026/05/26 05:04:11 parsed 1 programs [ 62.776681][ T4198] cgroup: Unknown subsys name 'net' [ 62.887595][ T4198] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size = 127995904 bytes [ 64.168830][ T4198] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k FS [ 65.390607][ T366] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 65.406187][ T366] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 65.416931][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 65.434014][ T366] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 65.441861][ T366] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 65.449869][ T366] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 65.893567][ T4226] syz-executor (4226) used greatest stack depth: 20688 bytes left [ 67.385494][ T4267] chnl_net:caif_netlink_parms(): no params data found [ 67.445279][ T4267] bridge0: port 1(bridge_slave_0) entered blocking state [ 67.453051][ T4267] bridge0: port 1(bridge_slave_0) entered disabled state [ 67.461232][ T4267] device bridge_slave_0 entered promiscuous mode [ 67.470498][ T4267] bridge0: port 2(bridge_slave_1) entered blocking state [ 67.477707][ T4267] bridge0: port 2(bridge_slave_1) entered disabled state [ 67.485376][ T4267] device bridge_slave_1 entered promiscuous mode [ 67.506063][ T4267] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 67.517638][ T4267] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 67.542519][ T4267] team0: Port device team_slave_0 added [ 67.549989][ T4267] team0: Port device team_slave_1 added [ 67.570130][ T4267] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 67.577212][ T4267] 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. [ 67.603488][ T4267] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 67.616663][ T4267] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 67.623719][ T4267] 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. [ 67.649651][ T4267] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 67.677477][ T4267] device hsr_slave_0 entered promiscuous mode [ 67.684183][ T4267] device hsr_slave_1 entered promiscuous mode [ 67.853760][ T4267] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 67.872914][ T4267] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 67.886391][ T4267] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 67.901124][ T4267] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 67.951382][ T4267] bridge0: port 2(bridge_slave_1) entered blocking state [ 67.958578][ T4267] bridge0: port 2(bridge_slave_1) entered forwarding state [ 67.966524][ T4267] bridge0: port 1(bridge_slave_0) entered blocking state [ 67.973604][ T4267] bridge0: port 1(bridge_slave_0) entered forwarding state [ 68.007969][ T4267] 8021q: adding VLAN 0 to HW filter on device bond0 [ 68.023391][ T9] bridge0: port 1(bridge_slave_0) entered disabled state [ 68.031979][ T9] bridge0: port 2(bridge_slave_1) entered disabled state [ 68.040681][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 68.050272][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 68.058196][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 68.068262][ T4267] 8021q: adding VLAN 0 to HW filter on device team0 [ 68.079140][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 68.087748][ T9] bridge0: port 1(bridge_slave_0) entered blocking state [ 68.094814][ T9] bridge0: port 1(bridge_slave_0) entered forwarding state [ 68.114289][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 68.122827][ T9] bridge0: port 2(bridge_slave_1) entered blocking state [ 68.129866][ T9] bridge0: port 2(bridge_slave_1) entered forwarding state [ 68.139539][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 68.149623][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 68.160600][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 68.171522][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 68.184614][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 68.195146][ T4267] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 68.267697][ T4267] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 68.275184][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 68.283021][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 68.315859][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 68.332715][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 68.341014][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 68.349127][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 68.360733][ T4267] device veth0_vlan entered promiscuous mode [ 68.387788][ T4267] device veth1_vlan entered promiscuous mode [ 68.406688][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 68.415451][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 68.424105][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 68.452219][ T4267] device veth0_macvtap entered promiscuous mode [ 68.459919][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 68.470590][ T4267] device veth1_macvtap entered promiscuous mode [ 68.486571][ T4267] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 68.499235][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 68.508388][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 68.544210][ T4267] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 68.551516][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 68.560477][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 68.574135][ T4267] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 68.585431][ T4267] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 68.594458][ T4267] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 68.603923][ T4267] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 2026/05/26 05:04:19 executed programs: 0 [ 69.483614][ T4308] chnl_net:caif_netlink_parms(): no params data found [ 69.549191][ T4308] bridge0: port 1(bridge_slave_0) entered blocking state [ 69.557771][ T4308] bridge0: port 1(bridge_slave_0) entered disabled state [ 69.567216][ T4308] device bridge_slave_0 entered promiscuous mode [ 69.577979][ T4308] bridge0: port 2(bridge_slave_1) entered blocking state [ 69.586551][ T4308] bridge0: port 2(bridge_slave_1) entered disabled state [ 69.596569][ T4308] device bridge_slave_1 entered promiscuous mode [ 69.624157][ T4308] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 69.635611][ T4308] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 69.662718][ T4308] team0: Port device team_slave_0 added [ 69.671271][ T4308] team0: Port device team_slave_1 added [ 69.691934][ T4308] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 69.699170][ 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. [ 69.727036][ T4308] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 69.740225][ T4308] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 69.747863][ 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. [ 69.777631][ T4308] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 69.818614][ T4308] device hsr_slave_0 entered promiscuous mode [ 69.827690][ T4308] device hsr_slave_1 entered promiscuous mode [ 69.835664][ T4308] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 69.846013][ T4308] Cannot create hsr debugfs directory [ 69.939809][ T4308] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 71.295255][ T1428] ieee802154 phy0 wpan0: encryption failed: -22 [ 71.301648][ T1428] ieee802154 phy1 wpan1: encryption failed: -22 [ 71.453400][ T4287] Bluetooth: hci0: command 0x0409 tx timeout [ 73.308088][ T4308] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 73.522430][ T4287] Bluetooth: hci0: command 0x041b tx timeout [ 74.358622][ T4308] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 74.417578][ T4308] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 74.589488][ T4308] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 74.598970][ T4308] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 74.607614][ T4308] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 74.616872][ T4308] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 74.630352][ T366] device hsr_slave_0 left promiscuous mode [ 74.637015][ T366] device hsr_slave_1 left promiscuous mode [ 74.643481][ T366] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 74.650880][ T366] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 74.659518][ T366] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 74.667109][ T366] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 74.674844][ T366] device bridge_slave_1 left promiscuous mode [ 74.681670][ T366] bridge0: port 2(bridge_slave_1) entered disabled state [ 74.696091][ T366] device bridge_slave_0 left promiscuous mode [ 74.702274][ T366] bridge0: port 1(bridge_slave_0) entered disabled state [ 74.718676][ T366] device veth1_macvtap left promiscuous mode [ 74.725691][ T366] device veth0_macvtap left promiscuous mode [ 74.731828][ T366] device veth1_vlan left promiscuous mode [ 74.738028][ T366] device veth0_vlan left promiscuous mode [ 74.862185][ T366] team0 (unregistering): Port device team_slave_1 removed [ 74.874348][ T366] team0 (unregistering): Port device team_slave_0 removed [ 74.890894][ T366] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 74.904353][ T366] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 74.949543][ T366] bond0 (unregistering): Released all slaves [ 75.019790][ T4308] 8021q: adding VLAN 0 to HW filter on device bond0 [ 75.032520][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 75.040220][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 75.051155][ T4308] 8021q: adding VLAN 0 to HW filter on device team0 [ 75.068896][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 75.078430][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 75.090516][ T9] bridge0: port 1(bridge_slave_0) entered blocking state [ 75.097635][ T9] bridge0: port 1(bridge_slave_0) entered forwarding state [ 75.106417][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 75.116574][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 75.125076][ T9] bridge0: port 2(bridge_slave_1) entered blocking state [ 75.132100][ T9] bridge0: port 2(bridge_slave_1) entered forwarding state [ 75.140123][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 75.154809][ T4296] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 75.166709][ T4296] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 75.180973][ T4296] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 75.189781][ T4296] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 75.204577][ T4308] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 75.215729][ T4308] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 75.227354][ T4296] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 75.236772][ T4296] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 75.245720][ T4296] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 75.254506][ T4296] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 75.263179][ T4296] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 75.271435][ T4296] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 75.279955][ T4296] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 75.288253][ T4296] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 75.370799][ T4296] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 75.378901][ T4296] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 75.392145][ T4308] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 75.408582][ T4296] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 75.417482][ T4296] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 75.443638][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 75.464496][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 75.476536][ T4308] device veth0_vlan entered promiscuous mode [ 75.483449][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 75.491801][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 75.505110][ T4308] device veth1_vlan entered promiscuous mode [ 75.528765][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 75.538847][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 75.549115][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 75.560010][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 75.573782][ T4308] device veth0_macvtap entered promiscuous mode [ 75.584240][ T4308] device veth1_macvtap entered promiscuous mode [ 75.602528][ T4288] Bluetooth: hci0: command 0x040f tx timeout [ 75.610780][ T4308] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 75.620014][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 75.629360][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 75.639557][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 75.648871][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 75.662238][ T4308] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 75.673371][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 75.682785][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 75.692558][ T4308] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 75.701260][ T4308] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 75.711414][ T4308] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 75.720655][ T4308] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 75.781185][ T4296] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 75.794656][ T4296] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 75.814226][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 75.826145][ T4296] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 75.834592][ T4296] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 75.845520][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 75.942858][ T4321] [ 75.945230][ T4321] ====================================================== [ 75.952238][ T4321] WARNING: possible circular locking dependency detected [ 75.959267][ T4321] syzkaller #0 Not tainted [ 75.963684][ T4321] ------------------------------------------------------ [ 75.970696][ T4321] syz.0.17/4321 is trying to acquire lock: [ 75.976496][ T4321] ffff88807771cc28 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}, at: __flush_work+0xfa/0x210 [ 75.987565][ T4321] [ 75.987565][ T4321] but task is already holding lock: [ 75.994931][ T4321] ffffffff8d6c65a8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x18b/0x560 [ 76.004598][ T4321] [ 76.004598][ T4321] which lock already depends on the new lock. [ 76.004598][ T4321] [ 76.014997][ T4321] [ 76.014997][ T4321] the existing dependency chain (in reverse order) is: [ 76.024011][ T4321] [ 76.024011][ T4321] -> #4 (rfkill_global_mutex){+.+.}-{3:3}: [ 76.032014][ T4321] __mutex_lock_common+0x1e3/0x2400 [ 76.037743][ T4321] mutex_lock_nested+0x17/0x20 [ 76.043033][ T4321] rfkill_register+0x33/0x980 [ 76.048240][ T4321] hci_register_dev+0x452/0x970 [ 76.053612][ T4321] vhci_create_device+0x32c/0x5c0 [ 76.059156][ T4321] vhci_write+0x391/0x450 [ 76.064002][ T4321] vfs_write+0x745/0xd60 [ 76.068762][ T4321] ksys_write+0x152/0x260 [ 76.073605][ T4321] do_syscall_64+0x4c/0xa0 [ 76.078541][ T4321] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 76.084970][ T4321] [ 76.084970][ T4321] -> #3 (&data->open_mutex){+.+.}-{3:3}: [ 76.092794][ T4321] __mutex_lock_common+0x1e3/0x2400 [ 76.098517][ T4321] mutex_lock_nested+0x17/0x20 [ 76.103799][ T4321] vhci_send_frame+0x88/0x100 [ 76.108996][ T4321] hci_send_frame+0x1a9/0x2e0 [ 76.114187][ T4321] hci_tx_work+0x9f9/0x1710 [ 76.119204][ T4321] process_one_work+0x85f/0x1010 [ 76.124658][ T4321] worker_thread+0xaa6/0x1290 [ 76.129855][ T4321] kthread+0x436/0x520 [ 76.134438][ T4321] ret_from_fork+0x1f/0x30 [ 76.139373][ T4321] [ 76.139373][ T4321] -> #2 ((work_completion)(&hdev->tx_work)){+.+.}-{0:0}: [ 76.148575][ T4321] __flush_work+0x116/0x210 [ 76.153599][ T4321] hci_dev_do_close+0x1e7/0x1030 [ 76.159055][ T4321] hci_unregister_dev+0x2d7/0x580 [ 76.164588][ T4321] vhci_release+0x73/0xc0 [ 76.169430][ T4321] __fput+0x234/0x930 [ 76.173916][ T4321] task_work_run+0x125/0x1a0 [ 76.179010][ T4321] do_exit+0x626/0x20c0 [ 76.183665][ T4321] do_group_exit+0x12e/0x300 [ 76.188755][ T4321] get_signal+0x6d6/0x12d0 [ 76.193672][ T4321] arch_do_signal_or_restart+0xe7/0x12c0 [ 76.199828][ T4321] exit_to_user_mode_loop+0x9e/0x130 [ 76.205613][ T4321] exit_to_user_mode_prepare+0xee/0x180 [ 76.211663][ T4321] syscall_exit_to_user_mode+0x16/0x40 [ 76.217625][ T4321] do_syscall_64+0x58/0xa0 [ 76.222542][ T4321] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 76.228935][ T4321] [ 76.228935][ T4321] -> #1 (&hdev->req_lock){+.+.}-{3:3}: [ 76.236557][ T4321] __mutex_lock_common+0x1e3/0x2400 [ 76.242258][ T4321] mutex_lock_nested+0x17/0x20 [ 76.247528][ T4321] bg_scan_update+0x44/0x3b0 [ 76.252620][ T4321] process_one_work+0x85f/0x1010 [ 76.258058][ T4321] worker_thread+0xaa6/0x1290 [ 76.263233][ T4321] kthread+0x436/0x520 [ 76.267799][ T4321] ret_from_fork+0x1f/0x30 [ 76.272719][ T4321] [ 76.272719][ T4321] -> #0 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}: [ 76.282506][ T4321] __lock_acquire+0x2c42/0x7d10 [ 76.287860][ T4321] lock_acquire+0x19e/0x400 [ 76.292867][ T4321] __flush_work+0x116/0x210 [ 76.297876][ T4321] __cancel_work_timer+0x3f4/0x560 [ 76.303494][ T4321] hci_request_cancel_all+0xcc/0x300 [ 76.309279][ T4321] hci_dev_do_close+0x4e/0x1030 [ 76.314633][ T4321] hci_rfkill_set_block+0x10a/0x190 [ 76.320333][ T4321] rfkill_set_block+0x1c9/0x3d0 [ 76.325684][ T4321] rfkill_fop_write+0x452/0x560 [ 76.331031][ T4321] vfs_write+0x30b/0xd60 [ 76.335861][ T4321] ksys_write+0x152/0x260 [ 76.340693][ T4321] do_syscall_64+0x4c/0xa0 [ 76.345609][ T4321] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 76.352009][ T4321] [ 76.352009][ T4321] other info that might help us debug this: [ 76.352009][ T4321] [ 76.362213][ T4321] Chain exists of: [ 76.362213][ T4321] (work_completion)(&hdev->bg_scan_update) --> &data->open_mutex --> rfkill_global_mutex [ 76.362213][ T4321] [ 76.377909][ T4321] Possible unsafe locking scenario: [ 76.377909][ T4321] [ 76.385336][ T4321] CPU0 CPU1 [ 76.390680][ T4321] ---- ---- [ 76.396020][ T4321] lock(rfkill_global_mutex); [ 76.400765][ T4321] lock(&data->open_mutex); [ 76.407848][ T4321] lock(rfkill_global_mutex); [ 76.415109][ T4321] lock((work_completion)(&hdev->bg_scan_update)); [ 76.421671][ T4321] [ 76.421671][ T4321] *** DEADLOCK *** [ 76.421671][ T4321] [ 76.429789][ T4321] 1 lock held by syz.0.17/4321: [ 76.434613][ T4321] #0: ffffffff8d6c65a8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x18b/0x560 [ 76.444681][ T4321] [ 76.444681][ T4321] stack backtrace: [ 76.450559][ T4321] CPU: 0 PID: 4321 Comm: syz.0.17 Not tainted syzkaller #0 [ 76.457734][ T4321] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 76.467779][ T4321] Call Trace: [ 76.471045][ T4321] [ 76.473957][ T4321] dump_stack_lvl+0x188/0x250 [ 76.478620][ T4321] ? load_image+0x400/0x400 [ 76.483104][ T4321] ? show_regs_print_info+0x20/0x20 [ 76.488282][ T4321] ? print_circular_bug+0x12b/0x1a0 [ 76.493468][ T4321] check_noncircular+0x296/0x330 [ 76.498390][ T4321] ? look_up_lock_class+0x71/0x110 [ 76.504013][ T4321] ? add_chain_block+0x940/0x940 [ 76.508954][ T4321] ? lockdep_lock+0xf1/0x1f0 [ 76.513539][ T4321] ? __lock_acquire+0x12e8/0x7d10 [ 76.518550][ T4321] ? mark_lock+0x94/0x320 [ 76.522862][ T4321] __lock_acquire+0x2c42/0x7d10 [ 76.527700][ T4321] ? verify_lock_unused+0x140/0x140 [ 76.532878][ T4321] ? verify_lock_unused+0x140/0x140 [ 76.538056][ T4321] ? mark_lock+0x94/0x320 [ 76.542366][ T4321] lock_acquire+0x19e/0x400 [ 76.546850][ T4321] ? __flush_work+0xfa/0x210 [ 76.551420][ T4321] ? __lock_acquire+0x7d10/0x7d10 [ 76.556425][ T4321] ? read_lock_is_recursive+0x10/0x10 [ 76.561777][ T4321] ? start_flush_work+0x776/0x820 [ 76.566782][ T4321] __flush_work+0x116/0x210 [ 76.571264][ T4321] ? __flush_work+0xfa/0x210 [ 76.575834][ T4321] ? flush_work+0x20/0x20 [ 76.580142][ T4321] ? try_to_grab_pending+0xfa/0x7f0 [ 76.585318][ T4321] ? mark_lock+0x94/0x320 [ 76.589628][ T4321] ? lockdep_hardirqs_on_prepare+0x409/0x770 [ 76.595595][ T4321] ? lock_chain_count+0x20/0x20 [ 76.600426][ T4321] ? mark_lock+0x94/0x320 [ 76.604754][ T4321] ? __cancel_work_timer+0x36a/0x560 [ 76.610018][ T4321] __cancel_work_timer+0x3f4/0x560 [ 76.615111][ T4321] ? cancel_work_sync+0x20/0x20 [ 76.619939][ T4321] ? __cancel_work+0x1f9/0x2e0 [ 76.624681][ T4321] ? lockdep_hardirqs_on+0x94/0x140 [ 76.629861][ T4321] ? __cancel_work+0x27b/0x2e0 [ 76.634604][ T4321] ? cancel_work+0x20/0x20 [ 76.638999][ T4321] ? lock_chain_count+0x20/0x20 [ 76.643832][ T4321] hci_request_cancel_all+0xcc/0x300 [ 76.649101][ T4321] hci_dev_do_close+0x4e/0x1030 [ 76.653933][ T4321] ? _raw_spin_unlock_irqrestore+0xc1/0x120 [ 76.659803][ T4321] ? _raw_spin_unlock+0x40/0x40 [ 76.664632][ T4321] hci_rfkill_set_block+0x10a/0x190 [ 76.669813][ T4321] ? rcu_lock_release+0x20/0x20 [ 76.674646][ T4321] rfkill_set_block+0x1c9/0x3d0 [ 76.679481][ T4321] rfkill_fop_write+0x452/0x560 [ 76.684317][ T4321] ? rfkill_fop_read+0x520/0x520 [ 76.689236][ T4321] ? common_file_perm+0xc0/0x1c0 [ 76.694152][ T4321] ? fsnotify_perm+0x5d/0x560 [ 76.698812][ T4321] ? security_file_permission+0x75/0xa0 [ 76.704338][ T4321] ? rfkill_fop_read+0x520/0x520 [ 76.709253][ T4321] vfs_write+0x30b/0xd60 [ 76.713475][ T4321] ? file_end_write+0x250/0x250 [ 76.718307][ T4321] ? __context_tracking_exit+0x4c/0x80 [ 76.723750][ T4321] ? __lock_acquire+0x7d10/0x7d10 [ 76.728757][ T4321] ? __fdget_pos+0x1e2/0x370 [ 76.733333][ T4321] ksys_write+0x152/0x260 [ 76.737642][ T4321] ? __ia32_sys_read+0x80/0x80 [ 76.742387][ T4321] ? lockdep_hardirqs_on+0x94/0x140 [ 76.747592][ T4321] do_syscall_64+0x4c/0xa0 [ 76.752008][ T4321] ? clear_bhb_loop+0x30/0x80 [ 76.756667][ T4321] ? clear_bhb_loop+0x30/0x80 [ 76.761333][ T4321] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 76.767220][ T4321] RIP: 0033:0x7f2a48032e59 [ 76.771622][ T4321] 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 [ 76.791207][ T4321] RSP: 002b:00007ffe2950e438 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 76.799604][ T4321] RAX: ffffffffffffffda RBX: 00007f2a482abfa0 RCX: 00007f2a48032e59 [ 76.807570][ T4321] RDX: 0000000000000008 RSI: 0000200000000000 RDI: 0000000000000003 [ 76.815524][ T4321] RBP: 00007f2a480c8d6f R08: 0000000000000000 R09: 0000000000000000 [ 76.823476][ T4321] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 76.831424][ T4321] R13: 00007f2a482abfac R14: 00007f2a482abfa0 R15: 00007f2a482abfa0 [ 76.839383][ T4321]