Warning: Permanently added '10.128.0.24' (ED25519) to the list of known hosts. 2026/06/28 21:44:21 parsed 1 programs 2026/06/28 21:44:21 serving rpc on tcp://39983 [ 71.059055][ T4201] cgroup: Unknown subsys name 'net' [ 71.168579][ T4201] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size = 127995904 bytes [ 71.491892][ T1421] ieee802154 phy0 wpan0: encryption failed: -22 [ 71.498616][ T1421] ieee802154 phy1 wpan1: encryption failed: -22 [ 72.669763][ T4201] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k FS [ 74.613683][ T4224] syz-executor (4224) used greatest stack depth: 21008 bytes left [ 75.793370][ T4254] chnl_net:caif_netlink_parms(): no params data found [ 75.859115][ T4254] bridge0: port 1(bridge_slave_0) entered blocking state [ 75.866688][ T4254] bridge0: port 1(bridge_slave_0) entered disabled state [ 75.875829][ T4254] device bridge_slave_0 entered promiscuous mode [ 75.885959][ T4254] bridge0: port 2(bridge_slave_1) entered blocking state [ 75.893249][ T4254] bridge0: port 2(bridge_slave_1) entered disabled state [ 75.901706][ T4254] device bridge_slave_1 entered promiscuous mode [ 75.926728][ T4254] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 75.939677][ T4254] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 75.970123][ T4254] team0: Port device team_slave_0 added [ 75.979738][ T4254] team0: Port device team_slave_1 added [ 76.004102][ T4254] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 76.011200][ T4254] 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. [ 76.047272][ T4254] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 76.061085][ T4254] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 76.068830][ T4254] 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. [ 76.095243][ T4254] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 76.129100][ T4254] device hsr_slave_0 entered promiscuous mode [ 76.136241][ T4254] device hsr_slave_1 entered promiscuous mode [ 76.363247][ T4254] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 76.374276][ T4254] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 76.383776][ T4254] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 76.393160][ T4254] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 76.417445][ T4254] bridge0: port 2(bridge_slave_1) entered blocking state [ 76.424701][ T4254] bridge0: port 2(bridge_slave_1) entered forwarding state [ 76.432816][ T4254] bridge0: port 1(bridge_slave_0) entered blocking state [ 76.439937][ T4254] bridge0: port 1(bridge_slave_0) entered forwarding state [ 76.482985][ T4254] 8021q: adding VLAN 0 to HW filter on device bond0 [ 76.498129][ T910] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 76.510804][ T910] bridge0: port 1(bridge_slave_0) entered disabled state [ 76.520112][ T910] bridge0: port 2(bridge_slave_1) entered disabled state [ 76.529233][ T910] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 76.543346][ T4254] 8021q: adding VLAN 0 to HW filter on device team0 [ 76.555038][ T910] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 76.563985][ T910] bridge0: port 1(bridge_slave_0) entered blocking state [ 76.571150][ T910] bridge0: port 1(bridge_slave_0) entered forwarding state [ 76.585437][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 76.594173][ T154] bridge0: port 2(bridge_slave_1) entered blocking state [ 76.601332][ T154] bridge0: port 2(bridge_slave_1) entered forwarding state [ 76.622756][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 76.631559][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 76.645101][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 76.675584][ T910] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 76.688236][ T910] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 76.699411][ T4254] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 76.800023][ T910] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 76.807588][ T910] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 76.838753][ T4254] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 76.858927][ T1269] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 76.867674][ T1269] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 76.904359][ T1269] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 76.913786][ T1269] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 76.924410][ T1269] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 76.932472][ T1269] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 76.943598][ T4254] device veth0_vlan entered promiscuous mode [ 76.973611][ T4254] device veth1_vlan entered promiscuous mode [ 76.993976][ T1269] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 77.002525][ T1269] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 77.011375][ T1269] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 77.020678][ T1269] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 77.032071][ T4254] device veth0_macvtap entered promiscuous mode [ 77.060715][ T4254] device veth1_macvtap entered promiscuous mode [ 77.075938][ T4254] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 77.083779][ T1269] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 77.092849][ T1269] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 77.101336][ T1269] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 77.110487][ T1269] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 77.124068][ T4254] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 77.132026][ T1269] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 77.141791][ T1269] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 77.173613][ T4254] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 77.182700][ T4254] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 77.191849][ T4254] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 77.201123][ T4254] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 77.332077][ T4254] syz-executor (4254) used greatest stack depth: 20656 bytes left [ 78.024613][ T1269] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 78.038376][ T1269] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 78.060996][ T1273] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 78.076391][ T910] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 78.086022][ T910] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 78.094672][ T1273] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2026/06/28 21:44:31 executed programs: 0 [ 78.977128][ T4303] chnl_net:caif_netlink_parms(): no params data found [ 79.036617][ T4303] bridge0: port 1(bridge_slave_0) entered blocking state [ 79.044019][ T4303] bridge0: port 1(bridge_slave_0) entered disabled state [ 79.052694][ T4303] device bridge_slave_0 entered promiscuous mode [ 79.061277][ T4303] bridge0: port 2(bridge_slave_1) entered blocking state [ 79.068645][ T4303] bridge0: port 2(bridge_slave_1) entered disabled state [ 79.076527][ T4303] device bridge_slave_1 entered promiscuous mode [ 79.105756][ T4303] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 79.123953][ T144] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 79.140959][ T4303] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 79.164491][ T4303] team0: Port device team_slave_0 added [ 79.172677][ T4303] team0: Port device team_slave_1 added [ 79.191299][ T4303] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 79.198474][ T4303] 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. [ 79.224659][ T4303] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 79.237028][ T4303] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 79.244202][ T4303] 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. [ 79.270665][ T4303] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 79.300465][ T4303] device hsr_slave_0 entered promiscuous mode [ 79.307201][ T4303] device hsr_slave_1 entered promiscuous mode [ 79.314464][ T4303] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 79.322361][ T4303] Cannot create hsr debugfs directory [ 80.928965][ T4273] Bluetooth: hci0: command 0x0409 tx timeout [ 82.715138][ T144] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 82.753684][ T144] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 82.836892][ T144] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 83.008123][ T13] Bluetooth: hci0: command 0x041b tx timeout [ 83.712213][ T4303] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 83.722979][ T4303] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 83.733120][ T4303] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 83.742898][ T4303] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 83.803462][ T4303] 8021q: adding VLAN 0 to HW filter on device bond0 [ 83.830167][ T1269] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 83.838677][ T1269] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 83.850099][ T4303] 8021q: adding VLAN 0 to HW filter on device team0 [ 83.877559][ T1269] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 83.887214][ T1269] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 83.898773][ T1269] bridge0: port 1(bridge_slave_0) entered blocking state [ 83.905856][ T1269] bridge0: port 1(bridge_slave_0) entered forwarding state [ 83.915733][ T1269] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 83.948349][ T1273] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 83.957065][ T1273] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 83.965933][ T1273] bridge0: port 2(bridge_slave_1) entered blocking state [ 83.973051][ T1273] bridge0: port 2(bridge_slave_1) entered forwarding state [ 83.982191][ T1273] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 83.991038][ T1273] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 84.004715][ T1273] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 84.014902][ T1273] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 84.026400][ T1273] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 84.054933][ T1273] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 84.063942][ T1273] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 84.075513][ T1273] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 84.085457][ T1273] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 84.109125][ T1269] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 84.118786][ T1269] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 84.130105][ T4303] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 84.258801][ T1269] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 84.266312][ T1269] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 84.279817][ T4303] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 84.309914][ T144] device hsr_slave_0 left promiscuous mode [ 84.317025][ T144] device hsr_slave_1 left promiscuous mode [ 84.324244][ T144] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 84.332731][ T144] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 84.342142][ T144] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 84.351239][ T144] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 84.359248][ T144] device bridge_slave_1 left promiscuous mode [ 84.366230][ T144] bridge0: port 2(bridge_slave_1) entered disabled state [ 84.380684][ T144] device bridge_slave_0 left promiscuous mode [ 84.387073][ T144] bridge0: port 1(bridge_slave_0) entered disabled state [ 84.405674][ T144] device veth1_macvtap left promiscuous mode [ 84.413114][ T144] device veth0_macvtap left promiscuous mode [ 84.419346][ T144] device veth1_vlan left promiscuous mode [ 84.425322][ T144] device veth0_vlan left promiscuous mode [ 84.603235][ T144] team0 (unregistering): Port device team_slave_1 removed [ 84.619565][ T144] team0 (unregistering): Port device team_slave_0 removed [ 84.632827][ T144] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 84.647510][ T144] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 84.712310][ T144] bond0 (unregistering): Released all slaves [ 84.764388][ T1269] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 84.773978][ T1269] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 84.794606][ T1269] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 84.803503][ T1269] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 84.813615][ T1269] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 84.821981][ T1269] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 84.833528][ T4303] device veth0_vlan entered promiscuous mode [ 84.850865][ T4303] device veth1_vlan entered promiscuous mode [ 84.882451][ T1269] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 84.891911][ T1269] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 84.902982][ T4303] device veth0_macvtap entered promiscuous mode [ 84.912507][ T4303] device veth1_macvtap entered promiscuous mode [ 84.931911][ T4303] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 84.942358][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 84.951819][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 84.965154][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 84.974516][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 84.985042][ T4303] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 84.994896][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 85.003940][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 85.014005][ T4303] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 85.022824][ T4303] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 85.031884][ T4303] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 85.040929][ T4303] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 85.089264][ T4276] Bluetooth: hci0: command 0x040f tx timeout [ 85.122195][ T1273] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 85.133023][ T1273] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 85.142986][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 85.173123][ T910] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 85.187931][ T910] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 85.195573][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 85.318899][ T4347] [ 85.321294][ T4347] ====================================================== [ 85.328512][ T4347] WARNING: possible circular locking dependency detected [ 85.335579][ T4347] syzkaller #0 Not tainted [ 85.340015][ T4347] ------------------------------------------------------ [ 85.347059][ T4347] syz.0.17/4347 is trying to acquire lock: [ 85.352889][ T4347] ffff888079b9d028 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}, at: __flush_work+0xfa/0x210 [ 85.364000][ T4347] [ 85.364000][ T4347] but task is already holding lock: [ 85.371397][ T4347] ffffffff8d6c48a8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x1ae/0x560 [ 85.381161][ T4347] [ 85.381161][ T4347] which lock already depends on the new lock. [ 85.381161][ T4347] [ 85.391597][ T4347] [ 85.391597][ T4347] the existing dependency chain (in reverse order) is: [ 85.400646][ T4347] [ 85.400646][ T4347] -> #4 (rfkill_global_mutex){+.+.}-{3:3}: [ 85.408682][ T4347] __mutex_lock_common+0x1e5/0x2400 [ 85.414449][ T4347] mutex_lock_nested+0x17/0x20 [ 85.419777][ T4347] rfkill_register+0x2f/0x970 [ 85.425018][ T4347] hci_register_dev+0x459/0x980 [ 85.430426][ T4347] vhci_create_device+0x32e/0x5c0 [ 85.436042][ T4347] vhci_write+0x389/0x440 [ 85.440931][ T4347] vfs_write+0x748/0xd70 [ 85.445724][ T4347] ksys_write+0x153/0x260 [ 85.450607][ T4347] do_syscall_64+0x4c/0xa0 [ 85.455607][ T4347] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 85.462056][ T4347] [ 85.462056][ T4347] -> #3 (&data->open_mutex){+.+.}-{3:3}: [ 85.469915][ T4347] __mutex_lock_common+0x1e5/0x2400 [ 85.475676][ T4347] mutex_lock_nested+0x17/0x20 [ 85.480999][ T4347] vhci_send_frame+0x88/0x100 [ 85.486236][ T4347] hci_send_frame+0x1a9/0x2e0 [ 85.491488][ T4347] hci_tx_work+0x9b5/0x16d0 [ 85.496551][ T4347] process_one_work+0x867/0xff0 [ 85.501956][ T4347] worker_thread+0xad7/0x12a0 [ 85.507195][ T4347] kthread+0x42e/0x520 [ 85.511815][ T4347] ret_from_fork+0x1f/0x30 [ 85.516786][ T4347] [ 85.516786][ T4347] -> #2 ((work_completion)(&hdev->tx_work)){+.+.}-{0:0}: [ 85.526124][ T4347] __flush_work+0x116/0x210 [ 85.531190][ T4347] hci_dev_do_close+0x201/0x1020 [ 85.536687][ T4347] hci_unregister_dev+0x2eb/0x590 [ 85.542276][ T4347] vhci_release+0x73/0xc0 [ 85.547161][ T4347] __fput+0x212/0x8c0 [ 85.551699][ T4347] task_work_run+0x125/0x1a0 [ 85.556843][ T4347] do_exit+0x635/0x2110 [ 85.561561][ T4347] do_group_exit+0x12c/0x2f0 [ 85.566705][ T4347] get_signal+0x7eb/0x12e0 [ 85.571764][ T4347] arch_do_signal_or_restart+0xe6/0x12a0 [ 85.577955][ T4347] exit_to_user_mode_loop+0x9e/0x130 [ 85.583793][ T4347] exit_to_user_mode_prepare+0xee/0x180 [ 85.589881][ T4347] syscall_exit_to_user_mode+0x16/0x40 [ 85.595898][ T4347] do_syscall_64+0x58/0xa0 [ 85.600963][ T4347] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 85.607418][ T4347] [ 85.607418][ T4347] -> #1 (&hdev->req_lock){+.+.}-{3:3}: [ 85.615098][ T4347] __mutex_lock_common+0x1e5/0x2400 [ 85.620869][ T4347] mutex_lock_nested+0x17/0x20 [ 85.626201][ T4347] bg_scan_update+0x44/0x3b0 [ 85.631345][ T4347] process_one_work+0x867/0xff0 [ 85.636753][ T4347] worker_thread+0xad7/0x12a0 [ 85.641989][ T4347] kthread+0x42e/0x520 [ 85.646600][ T4347] ret_from_fork+0x1f/0x30 [ 85.651565][ T4347] [ 85.651565][ T4347] -> #0 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}: [ 85.661413][ T4347] __lock_acquire+0x2c66/0x7b50 [ 85.666847][ T4347] lock_acquire+0x19e/0x400 [ 85.671922][ T4347] __flush_work+0x116/0x210 [ 85.677237][ T4347] __cancel_work_timer+0x3f4/0x560 [ 85.682914][ T4347] hci_request_cancel_all+0xcc/0x300 [ 85.688769][ T4347] hci_dev_do_close+0x4e/0x1020 [ 85.694186][ T4347] hci_rfkill_set_block+0x101/0x180 [ 85.700059][ T4347] rfkill_set_block+0x1c1/0x3c0 [ 85.705470][ T4347] rfkill_fop_write+0x453/0x560 [ 85.710881][ T4347] vfs_write+0x304/0xd70 [ 85.715689][ T4347] ksys_write+0x153/0x260 [ 85.720570][ T4347] do_syscall_64+0x4c/0xa0 [ 85.725539][ T4347] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 85.731991][ T4347] [ 85.731991][ T4347] other info that might help us debug this: [ 85.731991][ T4347] [ 85.742255][ T4347] Chain exists of: [ 85.742255][ T4347] (work_completion)(&hdev->bg_scan_update) --> &data->open_mutex --> rfkill_global_mutex [ 85.742255][ T4347] [ 85.758053][ T4347] Possible unsafe locking scenario: [ 85.758053][ T4347] [ 85.765540][ T4347] CPU0 CPU1 [ 85.770941][ T4347] ---- ---- [ 85.776341][ T4347] lock(rfkill_global_mutex); [ 85.781145][ T4347] lock(&data->open_mutex); [ 85.788289][ T4347] lock(rfkill_global_mutex); [ 85.795609][ T4347] lock((work_completion)(&hdev->bg_scan_update)); [ 85.802241][ T4347] [ 85.802241][ T4347] *** DEADLOCK *** [ 85.802241][ T4347] [ 85.810419][ T4347] 1 lock held by syz.0.17/4347: [ 85.815391][ T4347] #0: ffffffff8d6c48a8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x1ae/0x560 [ 85.825547][ T4347] [ 85.825547][ T4347] stack backtrace: [ 85.831478][ T4347] CPU: 1 PID: 4347 Comm: syz.0.17 Not tainted syzkaller #0 [ 85.838709][ T4347] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 [ 85.848821][ T4347] Call Trace: [ 85.852135][ T4347] [ 85.855088][ T4347] dump_stack_lvl+0x188/0x250 [ 85.860061][ T4347] ? load_image+0x410/0x410 [ 85.864608][ T4347] ? show_regs_print_info+0x20/0x20 [ 85.869852][ T4347] ? print_circular_bug+0x12b/0x1a0 [ 85.875131][ T4347] check_noncircular+0x296/0x330 [ 85.880118][ T4347] ? look_up_lock_class+0x71/0x110 [ 85.885296][ T4347] ? add_chain_block+0x9b0/0x9b0 [ 85.890273][ T4347] ? lockdep_lock+0xf1/0x1f0 [ 85.894916][ T4347] ? __lock_acquire+0x1305/0x7b50 [ 85.899986][ T4347] ? mark_lock+0x94/0x320 [ 85.904342][ T4347] ? _find_first_zero_bit+0xd1/0xf0 [ 85.909571][ T4347] __lock_acquire+0x2c66/0x7b50 [ 85.914464][ T4347] ? verify_lock_unused+0x140/0x140 [ 85.919712][ T4347] ? verify_lock_unused+0x140/0x140 [ 85.924970][ T4347] lock_acquire+0x19e/0x400 [ 85.929512][ T4347] ? __flush_work+0xfa/0x210 [ 85.934141][ T4347] ? __lock_acquire+0x7b50/0x7b50 [ 85.939203][ T4347] ? read_lock_is_recursive+0x10/0x10 [ 85.944613][ T4347] ? start_flush_work+0x784/0x830 [ 85.949672][ T4347] __flush_work+0x116/0x210 [ 85.954218][ T4347] ? __flush_work+0xfa/0x210 [ 85.958887][ T4347] ? flush_work+0x20/0x20 [ 85.963257][ T4347] ? try_to_grab_pending+0xfb/0x820 [ 85.968490][ T4347] ? mark_lock+0x94/0x320 [ 85.972848][ T4347] ? lockdep_hardirqs_on_prepare+0x448/0x7c0 [ 85.978872][ T4347] ? lock_chain_count+0x20/0x20 [ 85.983765][ T4347] ? mark_lock+0x94/0x320 [ 85.988131][ T4347] ? __cancel_work_timer+0x36a/0x560 [ 85.993454][ T4347] __cancel_work_timer+0x3f4/0x560 [ 85.998601][ T4347] ? cancel_work_sync+0x20/0x20 [ 86.003488][ T4347] ? __cancel_work+0x1f9/0x2e0 [ 86.008288][ T4347] ? lockdep_hardirqs_on+0x94/0x140 [ 86.013525][ T4347] ? __cancel_work+0x27b/0x2e0 [ 86.018325][ T4347] ? cancel_work+0x20/0x20 [ 86.022776][ T4347] hci_request_cancel_all+0xcc/0x300 [ 86.028106][ T4347] hci_dev_do_close+0x4e/0x1020 [ 86.033040][ T4347] ? _raw_spin_unlock_irqrestore+0xc1/0x120 [ 86.038972][ T4347] ? _raw_spin_unlock+0x40/0x40 [ 86.043863][ T4347] hci_rfkill_set_block+0x101/0x180 [ 86.049102][ T4347] ? rcu_lock_release+0x20/0x20 [ 86.053993][ T4347] rfkill_set_block+0x1c1/0x3c0 [ 86.058882][ T4347] rfkill_fop_write+0x453/0x560 [ 86.063765][ T4347] ? rfkill_fop_read+0x560/0x560 [ 86.068751][ T4347] ? common_file_perm+0x120/0x1c0 [ 86.073818][ T4347] ? fsnotify_perm+0x5d/0x560 [ 86.078527][ T4347] ? security_file_permission+0x75/0xa0 [ 86.084117][ T4347] ? rfkill_fop_read+0x560/0x560 [ 86.089089][ T4347] vfs_write+0x304/0xd70 [ 86.093367][ T4347] ? file_end_write+0x250/0x250 [ 86.098250][ T4347] ? __context_tracking_exit+0x4c/0x80 [ 86.103748][ T4347] ? __fdget_pos+0x1e2/0x370 [ 86.108387][ T4347] ksys_write+0x153/0x260 [ 86.112757][ T4347] ? __ia32_sys_read+0x80/0x80 [ 86.117579][ T4347] ? lockdep_hardirqs_on+0x94/0x140 [ 86.122919][ T4347] do_syscall_64+0x4c/0xa0 [ 86.127381][ T4347] ? clear_bhb_loop+0x30/0x80 [ 86.132094][ T4347] ? clear_bhb_loop+0x30/0x80 [ 86.136813][ T4347] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 86.142759][ T4347] RIP: 0033:0x7f67de125e59 [ 86.147226][ T4347] 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 [ 86.166903][ T4347] RSP: 002b:00007ffc21c64b18 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 86.175442][ T4347] RAX: ffffffffffffffda RBX: 00007f67de39efa0 RCX: 00007f67de125e59 [ 86.183490][ T4347] RDX: 0000000000000008 RSI: 0000200000000080 RDI: 0000000000000003 [ 86.191495][ T4347] RBP: 00007f67de1bbe6f R08: 0000000000000000 R09: 0000000000000000 [ 86.199539][ T4347] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 86.207539][ T4347] R13: 00007f67de39efac R14: 00007f67de39efa0 R15: 00007f67de39efa0 [ 86.215565][ T4347]