Warning: Permanently added '10.128.1.168' (ED25519) to the list of known hosts. 2026/03/07 10:31:39 parsed 1 programs [ 70.210287][ T4188] cgroup: Unknown subsys name 'net' [ 70.349341][ T4188] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size = 127995904 bytes [ 71.436533][ T1420] ieee802154 phy0 wpan0: encryption failed: -22 [ 71.443101][ T1420] ieee802154 phy1 wpan1: encryption failed: -22 [ 71.895246][ T4188] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k FS [ 73.750453][ T9] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 73.758740][ T9] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 73.768638][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 73.795925][ T154] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 73.804577][ T154] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 73.812095][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 75.026692][ T4234] syz-executor (4234) used greatest stack depth: 20912 bytes left [ 75.136805][ T4239] chnl_net:caif_netlink_parms(): no params data found [ 75.204865][ T4239] bridge0: port 1(bridge_slave_0) entered blocking state [ 75.214037][ T4239] bridge0: port 1(bridge_slave_0) entered disabled state [ 75.222366][ T4239] device bridge_slave_0 entered promiscuous mode [ 75.233842][ T4239] bridge0: port 2(bridge_slave_1) entered blocking state [ 75.240994][ T4239] bridge0: port 2(bridge_slave_1) entered disabled state [ 75.249321][ T4239] device bridge_slave_1 entered promiscuous mode [ 75.278333][ T4239] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 75.291374][ T4239] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 75.321357][ T4239] team0: Port device team_slave_0 added [ 75.329655][ T4239] team0: Port device team_slave_1 added [ 75.355822][ T4239] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 75.363013][ T4239] batman_adv: batadv0: The MTU of interface batadv_slave_0 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. [ 75.389927][ T4239] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 75.403197][ T4239] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 75.410172][ T4239] 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. [ 75.436427][ T4239] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 75.476006][ T4239] device hsr_slave_0 entered promiscuous mode [ 75.482858][ T4239] device hsr_slave_1 entered promiscuous mode [ 75.612729][ T4239] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 75.624505][ T4239] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 75.635207][ T4239] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 75.647159][ T4239] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 75.715673][ T4239] bridge0: port 2(bridge_slave_1) entered blocking state [ 75.722902][ T4239] bridge0: port 2(bridge_slave_1) entered forwarding state [ 75.730925][ T4239] bridge0: port 1(bridge_slave_0) entered blocking state [ 75.738126][ T4239] bridge0: port 1(bridge_slave_0) entered forwarding state [ 75.843879][ T4239] 8021q: adding VLAN 0 to HW filter on device bond0 [ 75.864605][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 75.874508][ T9] bridge0: port 1(bridge_slave_0) entered disabled state [ 75.883511][ T9] bridge0: port 2(bridge_slave_1) entered disabled state [ 75.896774][ T4239] 8021q: adding VLAN 0 to HW filter on device team0 [ 75.909224][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 75.918297][ T144] bridge0: port 1(bridge_slave_0) entered blocking state [ 75.925459][ T144] bridge0: port 1(bridge_slave_0) entered forwarding state [ 75.938903][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 75.947459][ T144] bridge0: port 2(bridge_slave_1) entered blocking state [ 75.954584][ T144] bridge0: port 2(bridge_slave_1) entered forwarding state [ 75.976055][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 75.985157][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 75.997368][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 76.006651][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 76.019399][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 76.028073][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 76.040028][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 76.048631][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 76.059335][ T4239] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 76.160359][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 76.168433][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 76.198420][ T4239] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 76.216642][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 76.226492][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 76.266207][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 76.274717][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 76.299567][ T4239] device veth0_vlan entered promiscuous mode [ 76.306901][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 76.315081][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 76.329024][ T4239] device veth1_vlan entered promiscuous mode [ 76.361632][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 76.370194][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 76.378953][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 76.388249][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 76.400793][ T4239] device veth0_macvtap entered promiscuous mode [ 76.427049][ T4239] device veth1_macvtap entered promiscuous mode [ 76.443030][ T4239] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 76.450575][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 76.459354][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 76.468003][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 76.480598][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 76.492627][ T4239] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 76.503151][ T4239] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 76.511960][ T4239] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 76.520773][ T4239] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 76.530069][ T4239] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 76.541455][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 76.550450][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 76.673141][ T4239] syz-executor (4239) used greatest stack depth: 20496 bytes left 2026/03/07 10:31:50 executed programs: 0 [ 78.168738][ T4284] chnl_net:caif_netlink_parms(): no params data found [ 78.238775][ T4284] bridge0: port 1(bridge_slave_0) entered blocking state [ 78.247327][ T4284] bridge0: port 1(bridge_slave_0) entered disabled state [ 78.257104][ T4284] device bridge_slave_0 entered promiscuous mode [ 78.266716][ T4284] bridge0: port 2(bridge_slave_1) entered blocking state [ 78.274375][ T4284] bridge0: port 2(bridge_slave_1) entered disabled state [ 78.282932][ T4284] device bridge_slave_1 entered promiscuous mode [ 78.309906][ T4284] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 78.331779][ T4284] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 78.363903][ T4284] team0: Port device team_slave_0 added [ 78.371838][ T4284] team0: Port device team_slave_1 added [ 78.394694][ T4284] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 78.401688][ T4284] batman_adv: batadv0: The MTU of interface batadv_slave_0 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. [ 78.429953][ T4284] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 78.446999][ T4284] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 78.454127][ T4284] batman_adv: batadv0: The MTU of interface batadv_slave_1 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. [ 78.483802][ T4284] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 78.528555][ T4284] device hsr_slave_0 entered promiscuous mode [ 78.537062][ T4284] device hsr_slave_1 entered promiscuous mode [ 78.545264][ T4284] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 78.555586][ T4284] Cannot create hsr debugfs directory [ 78.649202][ T4284] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 80.083126][ T4292] Bluetooth: hci0: command 0x0409 tx timeout [ 81.681896][ T4284] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 81.758404][ T4284] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 81.811491][ T4284] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 81.910526][ T4284] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 81.920766][ T4284] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 81.947580][ T4284] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 81.956782][ T4284] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 82.019296][ T4284] 8021q: adding VLAN 0 to HW filter on device bond0 [ 82.033915][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 82.042013][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 82.052956][ T4284] 8021q: adding VLAN 0 to HW filter on device team0 [ 82.065056][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 82.074313][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 82.083271][ T154] bridge0: port 1(bridge_slave_0) entered blocking state [ 82.090375][ T154] bridge0: port 1(bridge_slave_0) entered forwarding state [ 82.113413][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 82.124498][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 82.133536][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 82.141975][ T154] bridge0: port 2(bridge_slave_1) entered blocking state [ 82.149104][ T154] bridge0: port 2(bridge_slave_1) entered forwarding state [ 82.157164][ T4248] Bluetooth: hci0: command 0x041b tx timeout [ 82.173398][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 82.182916][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 82.223770][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 82.235548][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 82.245207][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 82.256175][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 82.267706][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 82.279712][ T4238] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 82.288454][ T4238] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 82.304439][ T4264] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 82.313325][ T4264] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 82.323304][ T4284] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 82.436359][ T4238] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 82.445608][ T4238] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 82.458999][ T4284] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 82.480610][ T4238] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 82.489980][ T4238] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 82.527655][ T4284] device veth0_vlan entered promiscuous mode [ 82.535638][ T4238] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 82.545000][ T4238] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 82.560789][ T4284] device veth1_vlan entered promiscuous mode [ 82.568893][ T4238] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 82.577586][ T4238] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 82.586765][ T4238] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 82.604274][ T307] device hsr_slave_0 left promiscuous mode [ 82.611554][ T307] device hsr_slave_1 left promiscuous mode [ 82.618714][ T307] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 82.627759][ T307] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 82.636431][ T307] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 82.644472][ T307] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 82.652365][ T307] device bridge_slave_1 left promiscuous mode [ 82.659311][ T307] bridge0: port 2(bridge_slave_1) entered disabled state [ 82.676806][ T307] device bridge_slave_0 left promiscuous mode [ 82.683917][ T307] bridge0: port 1(bridge_slave_0) entered disabled state [ 82.702734][ T307] device veth1_macvtap left promiscuous mode [ 82.709032][ T307] device veth0_macvtap left promiscuous mode [ 82.716180][ T307] device veth1_vlan left promiscuous mode [ 82.722660][ T307] device veth0_vlan left promiscuous mode [ 82.901315][ T307] team0 (unregistering): Port device team_slave_1 removed [ 82.919127][ T307] team0 (unregistering): Port device team_slave_0 removed [ 82.936178][ T307] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 82.950303][ T307] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 83.009563][ T307] bond0 (unregistering): Released all slaves [ 83.067253][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 83.079315][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 83.088703][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 83.100193][ T4284] device veth0_macvtap entered promiscuous mode [ 83.112000][ T4284] device veth1_macvtap entered promiscuous mode [ 83.135072][ T4284] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 83.142692][ T4238] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 83.151014][ T4238] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 83.159468][ T4238] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 83.168628][ T4238] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 83.188152][ T4284] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 83.198617][ T4284] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 83.207835][ T4284] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 83.217503][ T4284] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 83.227159][ T4284] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 83.237928][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 83.247857][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 83.320450][ T4264] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 83.333908][ T4264] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 83.356939][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 83.373370][ T4264] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 83.381225][ T4264] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 83.389250][ T4264] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 83.508273][ T4298] [ 83.510670][ T4298] ====================================================== [ 83.517713][ T4298] WARNING: possible circular locking dependency detected [ 83.524767][ T4298] syzkaller #0 Not tainted [ 83.529201][ T4298] ------------------------------------------------------ [ 83.536241][ T4298] syz.0.17/4298 is trying to acquire lock: [ 83.542079][ T4298] ffff888025970c28 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}, at: __flush_work+0xfa/0x210 [ 83.553179][ T4298] [ 83.553179][ T4298] but task is already holding lock: [ 83.560560][ T4298] ffffffff8d6c51a8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x18b/0x560 [ 83.570270][ T4298] [ 83.570270][ T4298] which lock already depends on the new lock. [ 83.570270][ T4298] [ 83.580692][ T4298] [ 83.580692][ T4298] the existing dependency chain (in reverse order) is: [ 83.589772][ T4298] [ 83.589772][ T4298] -> #4 (rfkill_global_mutex){+.+.}-{3:3}: [ 83.597804][ T4298] __mutex_lock_common+0x1e3/0x2400 [ 83.603564][ T4298] mutex_lock_nested+0x17/0x20 [ 83.608879][ T4298] rfkill_register+0x33/0x8a0 [ 83.614118][ T4298] hci_register_dev+0x452/0x970 [ 83.619526][ T4298] vhci_create_device+0x32c/0x5c0 [ 83.625114][ T4298] vhci_write+0x391/0x450 [ 83.630040][ T4298] vfs_write+0x745/0xd60 [ 83.634828][ T4298] ksys_write+0x152/0x260 [ 83.639721][ T4298] do_syscall_64+0x4c/0xa0 [ 83.644689][ T4298] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 83.651216][ T4298] [ 83.651216][ T4298] -> #3 (&data->open_mutex){+.+.}-{3:3}: [ 83.659243][ T4298] __mutex_lock_common+0x1e3/0x2400 [ 83.665005][ T4298] mutex_lock_nested+0x17/0x20 [ 83.670416][ T4298] vhci_send_frame+0x88/0x100 [ 83.675641][ T4298] hci_send_frame+0x1a9/0x2e0 [ 83.681047][ T4298] hci_tx_work+0x9f9/0x1710 [ 83.686144][ T4298] process_one_work+0x85f/0x1010 [ 83.691646][ T4298] worker_thread+0xaa6/0x1290 [ 83.696969][ T4298] kthread+0x436/0x520 [ 83.701713][ T4298] ret_from_fork+0x1f/0x30 [ 83.706683][ T4298] [ 83.706683][ T4298] -> #2 ((work_completion)(&hdev->tx_work)){+.+.}-{0:0}: [ 83.715925][ T4298] __flush_work+0x116/0x210 [ 83.720989][ T4298] hci_dev_do_close+0x1e7/0x1030 [ 83.726485][ T4298] hci_unregister_dev+0x2d7/0x580 [ 83.732066][ T4298] vhci_release+0x73/0xc0 [ 83.736958][ T4298] __fput+0x234/0x930 [ 83.741540][ T4298] task_work_run+0x125/0x1a0 [ 83.746703][ T4298] do_exit+0x626/0x20c0 [ 83.751422][ T4298] do_group_exit+0x12e/0x300 [ 83.756561][ T4298] get_signal+0x6ca/0x12c0 [ 83.761532][ T4298] arch_do_signal_or_restart+0xe7/0x12c0 [ 83.767729][ T4298] exit_to_user_mode_loop+0x9e/0x130 [ 83.773572][ T4298] exit_to_user_mode_prepare+0xee/0x180 [ 83.779672][ T4298] syscall_exit_to_user_mode+0x16/0x40 [ 83.785706][ T4298] do_syscall_64+0x58/0xa0 [ 83.790678][ T4298] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 83.797134][ T4298] [ 83.797134][ T4298] -> #1 (&hdev->req_lock){+.+.}-{3:3}: [ 83.804821][ T4298] __mutex_lock_common+0x1e3/0x2400 [ 83.810579][ T4298] mutex_lock_nested+0x17/0x20 [ 83.815898][ T4298] bg_scan_update+0x44/0x3b0 [ 83.821044][ T4298] process_one_work+0x85f/0x1010 [ 83.826535][ T4298] worker_thread+0xaa6/0x1290 [ 83.831771][ T4298] kthread+0x436/0x520 [ 83.836389][ T4298] ret_from_fork+0x1f/0x30 [ 83.841359][ T4298] [ 83.841359][ T4298] -> #0 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}: [ 83.851203][ T4298] __lock_acquire+0x2c42/0x7d10 [ 83.856612][ T4298] lock_acquire+0x19e/0x400 [ 83.861690][ T4298] __flush_work+0x116/0x210 [ 83.866784][ T4298] __cancel_work_timer+0x3f4/0x560 [ 83.872453][ T4298] hci_request_cancel_all+0xcc/0x300 [ 83.878317][ T4298] hci_dev_do_close+0x4e/0x1030 [ 83.883721][ T4298] hci_rfkill_set_block+0x10a/0x190 [ 83.889475][ T4298] rfkill_set_block+0x1c6/0x420 [ 83.894888][ T4298] rfkill_fop_write+0x452/0x560 [ 83.900298][ T4298] vfs_write+0x30b/0xd60 [ 83.905084][ T4298] ksys_write+0x152/0x260 [ 83.909970][ T4298] do_syscall_64+0x4c/0xa0 [ 83.915112][ T4298] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 83.921731][ T4298] [ 83.921731][ T4298] other info that might help us debug this: [ 83.921731][ T4298] [ 83.931980][ T4298] Chain exists of: [ 83.931980][ T4298] (work_completion)(&hdev->bg_scan_update) --> &data->open_mutex --> rfkill_global_mutex [ 83.931980][ T4298] [ 83.947848][ T4298] Possible unsafe locking scenario: [ 83.947848][ T4298] [ 83.955346][ T4298] CPU0 CPU1 [ 83.960738][ T4298] ---- ---- [ 83.966139][ T4298] lock(rfkill_global_mutex); [ 83.970933][ T4298] lock(&data->open_mutex); [ 83.978076][ T4298] lock(rfkill_global_mutex); [ 83.985398][ T4298] lock((work_completion)(&hdev->bg_scan_update)); [ 83.992027][ T4298] [ 83.992027][ T4298] *** DEADLOCK *** [ 83.992027][ T4298] [ 84.000198][ T4298] 1 lock held by syz.0.17/4298: [ 84.005068][ T4298] #0: ffffffff8d6c51a8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x18b/0x560 [ 84.015202][ T4298] [ 84.015202][ T4298] stack backtrace: [ 84.021115][ T4298] CPU: 1 PID: 4298 Comm: syz.0.17 Not tainted syzkaller #0 [ 84.028510][ T4298] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026 [ 84.038587][ T4298] Call Trace: [ 84.041877][ T4298] [ 84.044811][ T4298] dump_stack_lvl+0x188/0x250 [ 84.049496][ T4298] ? load_image+0x400/0x400 [ 84.054003][ T4298] ? show_regs_print_info+0x20/0x20 [ 84.059206][ T4298] ? print_circular_bug+0x12b/0x1a0 [ 84.064409][ T4298] check_noncircular+0x296/0x330 [ 84.069350][ T4298] ? look_up_lock_class+0x71/0x110 [ 84.074465][ T4298] ? add_chain_block+0x940/0x940 [ 84.079403][ T4298] ? lockdep_lock+0xf1/0x1f0 [ 84.083998][ T4298] ? __lock_acquire+0x12e8/0x7d10 [ 84.089026][ T4298] ? mark_lock+0x94/0x320 [ 84.093354][ T4298] ? _find_first_zero_bit+0xce/0xf0 [ 84.098558][ T4298] __lock_acquire+0x2c42/0x7d10 [ 84.103428][ T4298] ? verify_lock_unused+0x140/0x140 [ 84.108654][ T4298] ? verify_lock_unused+0x140/0x140 [ 84.113877][ T4298] ? mark_lock+0x94/0x320 [ 84.118215][ T4298] lock_acquire+0x19e/0x400 [ 84.122737][ T4298] ? __flush_work+0xfa/0x210 [ 84.127361][ T4298] ? __lock_acquire+0x7d10/0x7d10 [ 84.132394][ T4298] ? read_lock_is_recursive+0x10/0x10 [ 84.137788][ T4298] ? start_flush_work+0x776/0x820 [ 84.142819][ T4298] __flush_work+0x116/0x210 [ 84.147331][ T4298] ? __flush_work+0xfa/0x210 [ 84.151934][ T4298] ? flush_work+0x20/0x20 [ 84.156262][ T4298] ? try_to_grab_pending+0xfa/0x7f0 [ 84.161465][ T4298] ? mark_lock+0x94/0x320 [ 84.165810][ T4298] ? lockdep_hardirqs_on_prepare+0x409/0x770 [ 84.171794][ T4298] ? lock_chain_count+0x20/0x20 [ 84.176650][ T4298] ? mark_lock+0x94/0x320 [ 84.180987][ T4298] ? __cancel_work_timer+0x36a/0x560 [ 84.186293][ T4298] __cancel_work_timer+0x3f4/0x560 [ 84.191426][ T4298] ? cancel_work_sync+0x20/0x20 [ 84.196282][ T4298] ? __cancel_work+0x1f9/0x2e0 [ 84.201059][ T4298] ? lockdep_hardirqs_on+0x94/0x140 [ 84.206280][ T4298] ? __cancel_work+0x27b/0x2e0 [ 84.211051][ T4298] ? cancel_work+0x20/0x20 [ 84.215494][ T4298] ? lock_chain_count+0x20/0x20 [ 84.220371][ T4298] hci_request_cancel_all+0xcc/0x300 [ 84.225754][ T4298] hci_dev_do_close+0x4e/0x1030 [ 84.230606][ T4298] ? _raw_spin_unlock_irqrestore+0xc1/0x120 [ 84.232627][ T4291] Bluetooth: hci0: command 0x040f tx timeout [ 84.236496][ T4298] ? _raw_spin_unlock+0x40/0x40 [ 84.236520][ T4298] hci_rfkill_set_block+0x10a/0x190 [ 84.252562][ T4298] ? rcu_lock_release+0x20/0x20 [ 84.257483][ T4298] rfkill_set_block+0x1c6/0x420 [ 84.262377][ T4298] rfkill_fop_write+0x452/0x560 [ 84.267261][ T4298] ? rfkill_fop_read+0x4d0/0x4d0 [ 84.272230][ T4298] ? common_file_perm+0x110/0x1c0 [ 84.277295][ T4298] ? fsnotify_perm+0x5d/0x560 [ 84.282008][ T4298] ? security_file_permission+0x75/0xa0 [ 84.287594][ T4298] ? rfkill_fop_read+0x4d0/0x4d0 [ 84.292604][ T4298] vfs_write+0x30b/0xd60 [ 84.296889][ T4298] ? file_end_write+0x250/0x250 [ 84.301751][ T4298] ? __context_tracking_exit+0x4c/0x80 [ 84.307247][ T4298] ? __lock_acquire+0x7d10/0x7d10 [ 84.312296][ T4298] ? __fdget_pos+0x1e2/0x370 [ 84.316926][ T4298] ksys_write+0x152/0x260 [ 84.321274][ T4298] ? __ia32_sys_read+0x80/0x80 [ 84.326052][ T4298] ? lockdep_hardirqs_on+0x94/0x140 [ 84.331269][ T4298] do_syscall_64+0x4c/0xa0 [ 84.335700][ T4298] ? clear_bhb_loop+0x30/0x80 [ 84.340386][ T4298] ? clear_bhb_loop+0x30/0x80 [ 84.345098][ T4298] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 84.351008][ T4298] RIP: 0033:0x7ff7915c0799 [ 84.355441][ T4298] Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48 [ 84.375054][ T4298] RSP: 002b:00007ffedc5c7d58 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 84.383481][ T4298] RAX: ffffffffffffffda RBX: 00007ff791839fa0 RCX: 00007ff7915c0799 [ 84.391462][ T4298] RDX: 0000000000000008 RSI: 00002000000001c0 RDI: 0000000000000003 [ 84.399438][ T4298] RBP: 00007ff791656bd9 R08: 0000000000000000 R09: 0000000000000000 [ 84.407441][ T4298] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 84.415415][ T4298] R13: 00007ff791839fac R14: 00007ff791839fa0 R15: 00007ff791839fa0 [ 84.423403][ T4298]