Warning: Permanently added '10.128.0.53' (ED25519) to the list of known hosts. 2026/09/12 23:44:57 parsed 1 programs 2026/09/12 23:44:57 serving rpc on tcp://34033 syzkaller login: [ 62.983561][ T4199] cgroup: Unknown subsys name 'net' [ 63.100916][ T4199] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size = 127995904 bytes [ 64.301576][ T4199] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k FS [ 67.337648][ T144] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 67.345575][ T144] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 67.361322][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 67.382799][ T9] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 67.390734][ T9] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 67.398479][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 67.597210][ T4256] chnl_net:caif_netlink_parms(): no params data found [ 67.636437][ T4256] bridge0: port 1(bridge_slave_0) entered blocking state [ 67.644153][ T4256] bridge0: port 1(bridge_slave_0) entered disabled state [ 67.652258][ T4256] device bridge_slave_0 entered promiscuous mode [ 67.661349][ T4256] bridge0: port 2(bridge_slave_1) entered blocking state [ 67.668553][ T4256] bridge0: port 2(bridge_slave_1) entered disabled state [ 67.676866][ T4256] device bridge_slave_1 entered promiscuous mode [ 67.706165][ T4256] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 67.721116][ T4256] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 67.756915][ T4256] team0: Port device team_slave_0 added [ 67.769596][ T4256] team0: Port device team_slave_1 added [ 67.790825][ T4256] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 67.797823][ T4256] 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. [ 67.823891][ T4256] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 67.838672][ T4256] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 67.845633][ T4256] 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. [ 67.871821][ T4256] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 67.921325][ T4256] device hsr_slave_0 entered promiscuous mode [ 67.929450][ T4256] device hsr_slave_1 entered promiscuous mode [ 68.005666][ T4256] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 68.015368][ T4256] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 68.024643][ T4256] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 68.033799][ T4256] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 68.053469][ T4256] bridge0: port 2(bridge_slave_1) entered blocking state [ 68.060727][ T4256] bridge0: port 2(bridge_slave_1) entered forwarding state [ 68.068807][ T4256] bridge0: port 1(bridge_slave_0) entered blocking state [ 68.075904][ T4256] bridge0: port 1(bridge_slave_0) entered forwarding state [ 68.120920][ T4256] 8021q: adding VLAN 0 to HW filter on device bond0 [ 68.133476][ T1279] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 68.143389][ T1279] bridge0: port 1(bridge_slave_0) entered disabled state [ 68.153054][ T1279] bridge0: port 2(bridge_slave_1) entered disabled state [ 68.165330][ T4256] 8021q: adding VLAN 0 to HW filter on device team0 [ 68.175999][ T1279] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 68.184740][ T1279] bridge0: port 1(bridge_slave_0) entered blocking state [ 68.191965][ T1279] bridge0: port 1(bridge_slave_0) entered forwarding state [ 68.202748][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 68.211461][ T9] bridge0: port 2(bridge_slave_1) entered blocking state [ 68.218558][ T9] bridge0: port 2(bridge_slave_1) entered forwarding state [ 68.235686][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 68.244422][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 68.255598][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 68.267695][ T1279] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 68.280884][ T1279] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 68.290910][ T4256] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 68.379717][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 68.388533][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 68.418344][ T4256] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 68.433209][ T1279] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 68.442605][ T1279] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 68.459598][ T1279] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 68.468663][ T1279] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 68.478036][ T1279] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 68.486157][ T1279] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 68.495733][ T4256] device veth0_vlan entered promiscuous mode [ 68.525584][ T4256] device veth1_vlan entered promiscuous mode [ 68.543690][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 68.552329][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 68.561737][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 68.570872][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 68.581956][ T4256] device veth0_macvtap entered promiscuous mode [ 68.609897][ T4256] device veth1_macvtap entered promiscuous mode [ 68.624073][ T4256] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 68.632543][ T1279] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 68.640657][ T1279] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 68.650389][ T1279] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 68.659092][ T1279] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 68.670785][ T4256] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 68.678515][ T1279] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 68.687497][ T1279] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 68.714765][ T4256] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 68.724141][ T4256] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 68.732993][ T4256] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 68.741719][ T4256] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 2026/09/12 23:45:05 executed programs: 0 [ 69.722442][ T4304] chnl_net:caif_netlink_parms(): no params data found [ 69.781776][ T4304] bridge0: port 1(bridge_slave_0) entered blocking state [ 69.792075][ T4304] bridge0: port 1(bridge_slave_0) entered disabled state [ 69.800302][ T4304] device bridge_slave_0 entered promiscuous mode [ 69.810998][ T4304] bridge0: port 2(bridge_slave_1) entered blocking state [ 69.822615][ T4304] bridge0: port 2(bridge_slave_1) entered disabled state [ 69.832967][ T4304] device bridge_slave_1 entered promiscuous mode [ 69.861719][ T4304] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 69.876084][ T4304] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 69.909049][ T4304] team0: Port device team_slave_0 added [ 69.917917][ T4304] team0: Port device team_slave_1 added [ 69.942852][ T4304] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 69.950115][ T4304] 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. [ 69.980021][ T4304] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 69.995211][ T4304] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 70.005094][ T4304] 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. [ 70.033674][ T4304] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 70.075854][ T4304] device hsr_slave_0 entered promiscuous mode [ 70.082684][ T4304] device hsr_slave_1 entered promiscuous mode [ 70.091921][ T4304] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 70.100032][ T4304] Cannot create hsr debugfs directory [ 70.197661][ T4304] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 70.264691][ T1183] ODEBUG: Out of memory. ODEBUG disabled [ 71.347690][ T1432] ieee802154 phy0 wpan0: encryption failed: -22 [ 71.354058][ T1432] ieee802154 phy1 wpan1: encryption failed: -22 [ 71.666374][ T1110] Bluetooth: hci0: command 0x0409 tx timeout [ 73.352061][ T4304] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 73.736329][ T1110] Bluetooth: hci0: command 0x041b tx timeout [ 74.100145][ T4304] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 74.142542][ T4304] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 74.222322][ T4304] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 74.230838][ T4304] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 74.240354][ T4304] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 74.258697][ T4304] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 74.298274][ T4304] 8021q: adding VLAN 0 to HW filter on device bond0 [ 74.309888][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 74.318410][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 74.339516][ T4304] 8021q: adding VLAN 0 to HW filter on device team0 [ 74.348994][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 74.357849][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 74.366492][ T144] bridge0: port 1(bridge_slave_0) entered blocking state [ 74.373539][ T144] bridge0: port 1(bridge_slave_0) entered forwarding state [ 74.381981][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 74.400868][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 74.409561][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 74.418307][ T9] bridge0: port 2(bridge_slave_1) entered blocking state [ 74.425447][ T9] bridge0: port 2(bridge_slave_1) entered forwarding state [ 74.436937][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 74.452978][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 74.463463][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 74.473445][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 74.482049][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 74.500292][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 74.508869][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 74.519412][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 74.528459][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 74.550885][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 74.559556][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 74.569771][ T4304] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 74.659462][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 74.667310][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 74.678472][ T4304] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 74.703756][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 74.712457][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 74.729690][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 74.737878][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 74.748256][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 74.756310][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 74.764677][ T4304] device veth0_vlan entered promiscuous mode [ 74.773881][ T1183] device hsr_slave_0 left promiscuous mode [ 74.780560][ T1183] device hsr_slave_1 left promiscuous mode [ 74.787267][ T1183] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 74.794670][ T1183] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 74.804049][ T1183] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 74.811707][ T1183] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 74.819384][ T1183] device bridge_slave_1 left promiscuous mode [ 74.826331][ T1183] bridge0: port 2(bridge_slave_1) entered disabled state [ 74.838863][ T1183] device bridge_slave_0 left promiscuous mode [ 74.845041][ T1183] bridge0: port 1(bridge_slave_0) entered disabled state [ 74.863674][ T1183] device veth1_macvtap left promiscuous mode [ 74.870094][ T1183] device veth0_macvtap left promiscuous mode [ 74.876488][ T1183] device veth1_vlan left promiscuous mode [ 74.882600][ T1183] device veth0_vlan left promiscuous mode [ 74.997624][ T1183] team0 (unregistering): Port device team_slave_1 removed [ 75.009394][ T1183] team0 (unregistering): Port device team_slave_0 removed [ 75.021527][ T1183] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 75.034761][ T1183] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 75.079076][ T1183] bond0 (unregistering): Released all slaves [ 75.121305][ T4304] device veth1_vlan entered promiscuous mode [ 75.140025][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 75.148598][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 75.156737][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 75.165050][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 75.178333][ T4304] device veth0_macvtap entered promiscuous mode [ 75.199750][ T4304] device veth1_macvtap entered promiscuous mode [ 75.212391][ T4304] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 75.219935][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 75.228785][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 75.236736][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 75.245105][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 75.256789][ T4304] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 75.273549][ T4304] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 75.282437][ T4304] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 75.291816][ T4304] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 75.300963][ T4304] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 75.311377][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 75.320391][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 75.372282][ T144] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 75.382179][ T144] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 75.390421][ T1279] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 75.410101][ T1279] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 75.418357][ T1279] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 75.426722][ T1279] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 75.502490][ T4318] [ 75.504840][ T4318] ====================================================== [ 75.511994][ T4318] WARNING: possible circular locking dependency detected [ 75.519015][ T4318] syzkaller #0 Not tainted [ 75.523419][ T4318] ------------------------------------------------------ [ 75.530422][ T4318] syz.0.17/4318 is trying to acquire lock: [ 75.536205][ T4318] ffff888075169028 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}, at: __flush_work+0xfa/0x210 [ 75.547249][ T4318] [ 75.547249][ T4318] but task is already holding lock: [ 75.554590][ T4318] ffffffff8d6d6128 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x1ae/0x560 [ 75.564216][ T4318] [ 75.564216][ T4318] which lock already depends on the new lock. [ 75.564216][ T4318] [ 75.574591][ T4318] [ 75.574591][ T4318] the existing dependency chain (in reverse order) is: [ 75.583582][ T4318] [ 75.583582][ T4318] -> #4 (rfkill_global_mutex){+.+.}-{3:3}: [ 75.591548][ T4318] __mutex_lock_common+0x1e5/0x2400 [ 75.597257][ T4318] mutex_lock_nested+0x17/0x20 [ 75.602531][ T4318] rfkill_register+0x2f/0x970 [ 75.607713][ T4318] hci_register_dev+0x459/0x980 [ 75.613063][ T4318] vhci_create_device+0x32e/0x5c0 [ 75.618593][ T4318] vhci_write+0x389/0x440 [ 75.623422][ T4318] vfs_write+0x748/0xd70 [ 75.628166][ T4318] ksys_write+0x153/0x260 [ 75.632993][ T4318] do_syscall_64+0x4c/0xa0 [ 75.637907][ T4318] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 75.644308][ T4318] [ 75.644308][ T4318] -> #3 (&data->open_mutex){+.+.}-{3:3}: [ 75.652109][ T4318] __mutex_lock_common+0x1e5/0x2400 [ 75.657825][ T4318] mutex_lock_nested+0x17/0x20 [ 75.663096][ T4318] vhci_send_frame+0x88/0x100 [ 75.668280][ T4318] hci_send_frame+0x1a9/0x2e0 [ 75.673462][ T4318] hci_tx_work+0x9b5/0x16d0 [ 75.678466][ T4318] process_one_work+0x867/0xff0 [ 75.683822][ T4318] worker_thread+0xad7/0x12a0 [ 75.688998][ T4318] kthread+0x42e/0x520 [ 75.693564][ T4318] ret_from_fork+0x1f/0x30 [ 75.698483][ T4318] [ 75.698483][ T4318] -> #2 ((work_completion)(&hdev->tx_work)){+.+.}-{0:0}: [ 75.707860][ T4318] __flush_work+0x116/0x210 [ 75.712877][ T4318] hci_dev_do_close+0x201/0x1020 [ 75.718320][ T4318] hci_unregister_dev+0x2eb/0x590 [ 75.723852][ T4318] vhci_release+0x73/0xc0 [ 75.728684][ T4318] __fput+0x212/0x8c0 [ 75.733168][ T4318] task_work_run+0x125/0x1a0 [ 75.738258][ T4318] do_exit+0x635/0x2110 [ 75.742910][ T4318] do_group_exit+0x12c/0x2f0 [ 75.747997][ T4318] get_signal+0x7eb/0x12e0 [ 75.752914][ T4318] arch_do_signal_or_restart+0xe6/0x12a0 [ 75.759047][ T4318] exit_to_user_mode_loop+0x9e/0x130 [ 75.764837][ T4318] exit_to_user_mode_prepare+0xee/0x180 [ 75.770889][ T4318] syscall_exit_to_user_mode+0x16/0x40 [ 75.776965][ T4318] do_syscall_64+0x58/0xa0 [ 75.781894][ T4318] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 75.788300][ T4318] [ 75.788300][ T4318] -> #1 (&hdev->req_lock){+.+.}-{3:3}: [ 75.795930][ T4318] __mutex_lock_common+0x1e5/0x2400 [ 75.801636][ T4318] mutex_lock_nested+0x17/0x20 [ 75.806909][ T4318] bg_scan_update+0x44/0x3b0 [ 75.812002][ T4318] process_one_work+0x867/0xff0 [ 75.817354][ T4318] worker_thread+0xad7/0x12a0 [ 75.822851][ T4318] kthread+0x42e/0x520 [ 75.827432][ T4318] ret_from_fork+0x1f/0x30 [ 75.832352][ T4318] [ 75.832352][ T4318] -> #0 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}: [ 75.842147][ T4318] __lock_acquire+0x2c66/0x7b50 [ 75.847515][ T4318] lock_acquire+0x19e/0x400 [ 75.852532][ T4318] __flush_work+0x116/0x210 [ 75.857539][ T4318] __cancel_work_timer+0x3f4/0x560 [ 75.863188][ T4318] hci_request_cancel_all+0xcc/0x300 [ 75.868978][ T4318] hci_dev_do_close+0x4e/0x1020 [ 75.874352][ T4318] hci_rfkill_set_block+0x101/0x180 [ 75.880051][ T4318] rfkill_set_block+0x1c1/0x3c0 [ 75.885405][ T4318] rfkill_fop_write+0x453/0x560 [ 75.890759][ T4318] vfs_write+0x304/0xd70 [ 75.895501][ T4318] ksys_write+0x153/0x260 [ 75.900352][ T4318] do_syscall_64+0x4c/0xa0 [ 75.905281][ T4318] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 75.911691][ T4318] [ 75.911691][ T4318] other info that might help us debug this: [ 75.911691][ T4318] [ 75.921906][ T4318] Chain exists of: [ 75.921906][ T4318] (work_completion)(&hdev->bg_scan_update) --> &data->open_mutex --> rfkill_global_mutex [ 75.921906][ T4318] [ 75.937612][ T4318] Possible unsafe locking scenario: [ 75.937612][ T4318] [ 75.945044][ T4318] CPU0 CPU1 [ 75.950386][ T4318] ---- ---- [ 75.955731][ T4318] lock(rfkill_global_mutex); [ 75.960497][ T4318] lock(&data->open_mutex); [ 75.967583][ T4318] lock(rfkill_global_mutex); [ 75.974854][ T4318] lock((work_completion)(&hdev->bg_scan_update)); [ 75.981421][ T4318] [ 75.981421][ T4318] *** DEADLOCK *** [ 75.981421][ T4318] [ 75.989542][ T4318] 1 lock held by syz.0.17/4318: [ 75.994367][ T4318] #0: ffffffff8d6d6128 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x1ae/0x560 [ 76.004437][ T4318] [ 76.004437][ T4318] stack backtrace: [ 76.010299][ T4318] CPU: 0 PID: 4318 Comm: syz.0.17 Not tainted syzkaller #0 [ 76.017474][ T4318] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 [ 76.027521][ T4318] Call Trace: [ 76.030783][ T4318] [ 76.033695][ T4318] dump_stack_lvl+0x188/0x250 [ 76.038361][ T4318] ? load_image+0x410/0x410 [ 76.042857][ T4318] ? show_regs_print_info+0x20/0x20 [ 76.048045][ T4318] ? print_circular_bug+0x12b/0x1a0 [ 76.053225][ T4318] check_noncircular+0x296/0x330 [ 76.058316][ T4318] ? look_up_lock_class+0x71/0x110 [ 76.063411][ T4318] ? add_chain_block+0x9b0/0x9b0 [ 76.068328][ T4318] ? lockdep_lock+0xf1/0x1f0 [ 76.072899][ T4318] ? __lock_acquire+0x1305/0x7b50 [ 76.077907][ T4318] ? mark_lock+0x94/0x320 [ 76.082214][ T4318] ? _find_first_zero_bit+0xd1/0xf0 [ 76.087399][ T4318] __lock_acquire+0x2c66/0x7b50 [ 76.092235][ T4318] ? verify_lock_unused+0x140/0x140 [ 76.097415][ T4318] ? verify_lock_unused+0x140/0x140 [ 76.102600][ T4318] lock_acquire+0x19e/0x400 [ 76.107084][ T4318] ? __flush_work+0xfa/0x210 [ 76.111655][ T4318] ? __lock_acquire+0x7b50/0x7b50 [ 76.116672][ T4318] ? read_lock_is_recursive+0x10/0x10 [ 76.122034][ T4318] ? start_flush_work+0x784/0x830 [ 76.127136][ T4318] ? __lock_acquire+0x13dc/0x7b50 [ 76.132144][ T4318] __flush_work+0x116/0x210 [ 76.136638][ T4318] ? __flush_work+0xfa/0x210 [ 76.141211][ T4318] ? flush_work+0x20/0x20 [ 76.145520][ T4318] ? try_to_grab_pending+0xfb/0x820 [ 76.150699][ T4318] ? mark_lock+0x94/0x320 [ 76.155012][ T4318] ? lockdep_hardirqs_on_prepare+0x448/0x7c0 [ 76.160975][ T4318] ? lock_chain_count+0x20/0x20 [ 76.165806][ T4318] ? mark_lock+0x94/0x320 [ 76.170114][ T4318] ? __cancel_work_timer+0x36a/0x560 [ 76.175379][ T4318] __cancel_work_timer+0x3f4/0x560 [ 76.180472][ T4318] ? cancel_work_sync+0x20/0x20 [ 76.185304][ T4318] ? __cancel_work+0x1f9/0x2e0 [ 76.190044][ T4318] ? lockdep_hardirqs_on+0x94/0x140 [ 76.195221][ T4318] ? __cancel_work+0x27b/0x2e0 [ 76.199961][ T4318] ? cancel_work+0x20/0x20 [ 76.204354][ T4318] hci_request_cancel_all+0xcc/0x300 [ 76.209620][ T4318] hci_dev_do_close+0x4e/0x1020 [ 76.214454][ T4318] ? _raw_spin_unlock_irqrestore+0xc1/0x120 [ 76.220327][ T4318] ? _raw_spin_unlock+0x40/0x40 [ 76.225157][ T4318] hci_rfkill_set_block+0x101/0x180 [ 76.230334][ T4318] ? rcu_lock_release+0x20/0x20 [ 76.235171][ T4318] rfkill_set_block+0x1c1/0x3c0 [ 76.240003][ T4318] rfkill_fop_write+0x453/0x560 [ 76.244835][ T4318] ? rfkill_fop_read+0x560/0x560 [ 76.249752][ T4318] ? common_file_perm+0x110/0x1c0 [ 76.254756][ T4318] ? fsnotify_perm+0x5d/0x560 [ 76.259414][ T4318] ? security_file_permission+0x75/0xa0 [ 76.264944][ T4318] ? rfkill_fop_read+0x560/0x560 [ 76.269866][ T4318] vfs_write+0x304/0xd70 [ 76.274093][ T4318] ? file_end_write+0x250/0x250 [ 76.278928][ T4318] ? __context_tracking_exit+0x4c/0x80 [ 76.284384][ T4318] ? __fdget_pos+0x1e2/0x370 [ 76.288962][ T4318] ksys_write+0x153/0x260 [ 76.293277][ T4318] ? __ia32_sys_read+0x80/0x80 [ 76.298022][ T4318] ? lockdep_hardirqs_on+0x94/0x140 [ 76.303220][ T4318] do_syscall_64+0x4c/0xa0 [ 76.307619][ T4318] ? clear_bhb_loop+0x30/0x80 [ 76.312276][ T4318] ? clear_bhb_loop+0x30/0x80 [ 76.316934][ T4318] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 76.322825][ T4318] RIP: 0033:0x7f6de4292159 [ 76.327221][ 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 [ 76.346817][ T4318] RSP: 002b:00007ffc9ad99428 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 76.355214][ T4318] RAX: ffffffffffffffda RBX: 00007f6de4519fa0 RCX: 00007f6de4292159 [ 76.363169][ T4318] RDX: 0000000000000008 RSI: 0000200000000080 RDI: 0000000000000003 [ 76.371125][ T4318] RBP: 00007f6de432903b R08: 0000000000000000 R09: 0000000000000000 [ 76.379080][ T4318] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 76.387038][ T4318] R13: 00007f6de4519fac R14: 00007f6de4519fa0 R15: 00007f6de4519fa0 [ 76.395001][ T4318] [ 76.400837][ T4241] Bluetooth: hci0: command 0x040f tx timeout