Warning: Permanently added '10.128.0.56' (ED25519) to the list of known hosts. 2026/07/19 21:31:46 parsed 1 programs 2026/07/19 21:31:46 serving rpc on tcp://36189 [ 55.075822][ T4198] cgroup: Unknown subsys name 'net' [ 55.195766][ T4198] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size = 127995904 bytes [ 56.418620][ T4198] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k FS [ 58.044048][ T144] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 58.054159][ T144] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 58.063909][ T1488] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 58.083384][ T144] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 58.091199][ T144] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 58.098946][ T1488] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 58.720077][ T4240] chnl_net:caif_netlink_parms(): no params data found [ 58.775356][ T4240] bridge0: port 1(bridge_slave_0) entered blocking state [ 58.782865][ T4240] bridge0: port 1(bridge_slave_0) entered disabled state [ 58.790880][ T4240] device bridge_slave_0 entered promiscuous mode [ 58.799938][ T4240] bridge0: port 2(bridge_slave_1) entered blocking state [ 58.807077][ T4240] bridge0: port 2(bridge_slave_1) entered disabled state [ 58.815046][ T4240] device bridge_slave_1 entered promiscuous mode [ 58.838432][ T4240] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 58.854145][ T4240] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 58.878622][ T4240] team0: Port device team_slave_0 added [ 58.887465][ T4240] team0: Port device team_slave_1 added [ 58.906667][ T4240] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 58.913683][ T4240] 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. [ 58.939610][ T4240] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 58.952526][ T4240] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 58.959463][ T4240] batman_adv: batadv0: The MTU of interface batadv_slave_1 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. [ 58.985440][ T4240] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 59.019933][ T4240] device hsr_slave_0 entered promiscuous mode [ 59.026812][ T4240] device hsr_slave_1 entered promiscuous mode [ 59.144289][ T4240] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 59.155522][ T4240] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 59.166940][ T4240] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 59.176722][ T4240] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 59.248353][ T4240] 8021q: adding VLAN 0 to HW filter on device bond0 [ 59.263566][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 59.272721][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 59.283259][ T4240] 8021q: adding VLAN 0 to HW filter on device team0 [ 59.301736][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 59.310531][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 59.320772][ T9] bridge0: port 1(bridge_slave_0) entered blocking state [ 59.327993][ T9] bridge0: port 1(bridge_slave_0) entered forwarding state [ 59.337001][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 59.345883][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 59.354515][ T9] bridge0: port 2(bridge_slave_1) entered blocking state [ 59.361583][ T9] bridge0: port 2(bridge_slave_1) entered forwarding state [ 59.369141][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 59.378026][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 59.386683][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 59.401551][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 59.410108][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 59.418910][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 59.428249][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 59.437749][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 59.451930][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 59.460195][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 59.468912][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 59.477659][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 59.487033][ T4240] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 59.579454][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 59.587106][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 59.600072][ T4240] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 59.630471][ T1488] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 59.639984][ T1488] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 59.672663][ T1488] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 59.682089][ T1488] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 59.690735][ T1488] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 59.698703][ T1488] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 59.714157][ T4240] device veth0_vlan entered promiscuous mode [ 59.727463][ T4240] device veth1_vlan entered promiscuous mode [ 59.746842][ T1488] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 59.754826][ T1488] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 59.764256][ T1488] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 59.775106][ T4240] device veth0_macvtap entered promiscuous mode [ 59.785514][ T4240] device veth1_macvtap entered promiscuous mode [ 59.798741][ T4240] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 59.806426][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 59.815302][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 59.823773][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 59.834176][ T4240] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 59.841703][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 59.850130][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 59.860720][ T4240] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 59.869669][ T4240] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 59.878745][ T4240] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 59.888701][ T4240] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 2026/07/19 21:31:53 executed programs: 0 [ 61.180205][ T4290] chnl_net:caif_netlink_parms(): no params data found [ 61.241140][ T4290] bridge0: port 1(bridge_slave_0) entered blocking state [ 61.248343][ T4290] bridge0: port 1(bridge_slave_0) entered disabled state [ 61.258934][ T4290] device bridge_slave_0 entered promiscuous mode [ 61.267883][ T4290] bridge0: port 2(bridge_slave_1) entered blocking state [ 61.277599][ T4290] bridge0: port 2(bridge_slave_1) entered disabled state [ 61.285870][ T4290] device bridge_slave_1 entered promiscuous mode [ 61.314150][ T4290] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 61.325716][ T4290] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 61.355834][ T4290] team0: Port device team_slave_0 added [ 61.364561][ T4290] team0: Port device team_slave_1 added [ 61.389388][ T4290] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 61.396373][ T4290] 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. [ 61.425047][ T4290] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 61.440346][ T4290] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 61.449745][ T4290] 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. [ 61.478401][ T4290] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 61.515666][ T4290] device hsr_slave_0 entered promiscuous mode [ 61.524875][ T4290] device hsr_slave_1 entered promiscuous mode [ 61.532868][ T4290] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 61.540658][ T4290] Cannot create hsr debugfs directory [ 61.625353][ T4290] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 63.122049][ T13] Bluetooth: hci0: command 0x0409 tx timeout [ 64.757349][ T4290] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 64.796211][ T4290] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 64.859028][ T4290] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 64.984177][ T4290] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 64.993975][ T4290] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 65.002647][ T4290] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 65.015281][ T4290] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 65.063998][ T4290] 8021q: adding VLAN 0 to HW filter on device bond0 [ 65.075516][ T1488] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 65.084658][ T1488] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 65.094745][ T4290] 8021q: adding VLAN 0 to HW filter on device team0 [ 65.104168][ T1488] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 65.112719][ T1488] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 65.120946][ T1488] bridge0: port 1(bridge_slave_0) entered blocking state [ 65.128008][ T1488] bridge0: port 1(bridge_slave_0) entered forwarding state [ 65.136038][ T1488] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 65.158737][ T1488] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 65.167491][ T1488] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 65.175903][ T1488] bridge0: port 2(bridge_slave_1) entered blocking state [ 65.182959][ T1488] bridge0: port 2(bridge_slave_1) entered forwarding state [ 65.193557][ T1488] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 65.204788][ T4257] Bluetooth: hci0: command 0x041b tx timeout [ 65.226789][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 65.236927][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 65.246311][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 65.255305][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 65.278231][ T497] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 65.286954][ T497] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 65.296644][ T497] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 65.305364][ T497] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 65.327017][ T497] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 65.335385][ T497] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 65.344841][ T4290] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 65.378523][ T154] device hsr_slave_0 left promiscuous mode [ 65.387403][ T154] device hsr_slave_1 left promiscuous mode [ 65.394265][ T154] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 65.402014][ T154] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 65.410083][ T154] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 65.418085][ T154] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 65.425665][ T154] device bridge_slave_1 left promiscuous mode [ 65.432439][ T154] bridge0: port 2(bridge_slave_1) entered disabled state [ 65.444836][ T154] device bridge_slave_0 left promiscuous mode [ 65.450958][ T154] bridge0: port 1(bridge_slave_0) entered disabled state [ 65.466451][ T154] device veth1_macvtap left promiscuous mode [ 65.473107][ T154] device veth0_macvtap left promiscuous mode [ 65.479133][ T154] device veth1_vlan left promiscuous mode [ 65.485023][ T154] device veth0_vlan left promiscuous mode [ 65.608215][ T154] team0 (unregistering): Port device team_slave_1 removed [ 65.620630][ T154] team0 (unregistering): Port device team_slave_0 removed [ 65.635290][ T154] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 65.647693][ T154] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 65.690582][ T154] bond0 (unregistering): Released all slaves [ 65.786061][ T497] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 65.793708][ T497] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 65.807600][ T4290] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 65.826888][ T1488] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 65.835656][ T1488] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 65.852575][ T497] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 65.860702][ T497] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 65.868908][ T497] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 65.876779][ T497] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 65.886374][ T4290] device veth0_vlan entered promiscuous mode [ 65.898737][ T4290] device veth1_vlan entered promiscuous mode [ 65.917504][ T1488] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 65.926193][ T1488] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 65.934681][ T1488] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 65.942991][ T1488] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 65.952974][ T4290] device veth0_macvtap entered promiscuous mode [ 65.961015][ T4290] device veth1_macvtap entered promiscuous mode [ 65.975663][ T4290] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 65.986064][ T4290] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 65.996534][ T4290] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 66.006118][ T4290] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 66.015043][ T4290] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 66.024100][ T4290] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 66.034478][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 66.042879][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 66.050580][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 66.059084][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 66.067543][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 66.077600][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 66.120014][ T144] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 66.131754][ T144] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 66.139520][ T497] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 66.161096][ T144] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 66.169407][ T144] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 66.177479][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 66.283983][ T4307] [ 66.286337][ T4307] ====================================================== [ 66.293345][ T4307] WARNING: possible circular locking dependency detected [ 66.300360][ T4307] syzkaller #0 Not tainted [ 66.304764][ T4307] ------------------------------------------------------ [ 66.311769][ T4307] syz.0.17/4307 is trying to acquire lock: [ 66.317561][ T4307] ffff888024595028 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}, at: __flush_work+0xfa/0x210 [ 66.328615][ T4307] [ 66.328615][ T4307] but task is already holding lock: [ 66.335970][ T4307] ffffffff8d6d3c28 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x1ae/0x560 [ 66.345625][ T4307] [ 66.345625][ T4307] which lock already depends on the new lock. [ 66.345625][ T4307] [ 66.356019][ T4307] [ 66.356019][ T4307] the existing dependency chain (in reverse order) is: [ 66.365034][ T4307] [ 66.365034][ T4307] -> #4 (rfkill_global_mutex){+.+.}-{3:3}: [ 66.373018][ T4307] __mutex_lock_common+0x1e5/0x2400 [ 66.378741][ T4307] mutex_lock_nested+0x17/0x20 [ 66.384030][ T4307] rfkill_register+0x2f/0x970 [ 66.389228][ T4307] hci_register_dev+0x459/0x980 [ 66.394597][ T4307] vhci_create_device+0x32e/0x5c0 [ 66.400142][ T4307] vhci_write+0x389/0x440 [ 66.405014][ T4307] vfs_write+0x748/0xd70 [ 66.409780][ T4307] ksys_write+0x153/0x260 [ 66.414630][ T4307] do_syscall_64+0x4c/0xa0 [ 66.419563][ T4307] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 66.425975][ T4307] [ 66.425975][ T4307] -> #3 (&data->open_mutex){+.+.}-{3:3}: [ 66.433792][ T4307] __mutex_lock_common+0x1e5/0x2400 [ 66.439509][ T4307] mutex_lock_nested+0x17/0x20 [ 66.444795][ T4307] vhci_send_frame+0x88/0x100 [ 66.449991][ T4307] hci_send_frame+0x1a9/0x2e0 [ 66.455191][ T4307] hci_tx_work+0x9b5/0x16d0 [ 66.460234][ T4307] process_one_work+0x867/0xff0 [ 66.465602][ T4307] worker_thread+0xad7/0x12a0 [ 66.470800][ T4307] kthread+0x42e/0x520 [ 66.475385][ T4307] ret_from_fork+0x1f/0x30 [ 66.480315][ T4307] [ 66.480315][ T4307] -> #2 ((work_completion)(&hdev->tx_work)){+.+.}-{0:0}: [ 66.489514][ T4307] __flush_work+0x116/0x210 [ 66.494536][ T4307] hci_dev_do_close+0x201/0x1020 [ 66.499984][ T4307] hci_unregister_dev+0x2eb/0x590 [ 66.505527][ T4307] vhci_release+0x73/0xc0 [ 66.510368][ T4307] __fput+0x212/0x8c0 [ 66.514872][ T4307] task_work_run+0x125/0x1a0 [ 66.519974][ T4307] do_exit+0x635/0x2110 [ 66.524644][ T4307] do_group_exit+0x12c/0x2f0 [ 66.529745][ T4307] get_signal+0x7eb/0x12e0 [ 66.534671][ T4307] arch_do_signal_or_restart+0xe6/0x12a0 [ 66.540818][ T4307] exit_to_user_mode_loop+0x9e/0x130 [ 66.546615][ T4307] exit_to_user_mode_prepare+0xee/0x180 [ 66.552672][ T4307] syscall_exit_to_user_mode+0x16/0x40 [ 66.558642][ T4307] do_syscall_64+0x58/0xa0 [ 66.563568][ T4307] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 66.569977][ T4307] [ 66.569977][ T4307] -> #1 (&hdev->req_lock){+.+.}-{3:3}: [ 66.577621][ T4307] __mutex_lock_common+0x1e5/0x2400 [ 66.583333][ T4307] mutex_lock_nested+0x17/0x20 [ 66.588609][ T4307] bg_scan_update+0x44/0x3b0 [ 66.593710][ T4307] process_one_work+0x867/0xff0 [ 66.599073][ T4307] worker_thread+0xad7/0x12a0 [ 66.604265][ T4307] kthread+0x42e/0x520 [ 66.608848][ T4307] ret_from_fork+0x1f/0x30 [ 66.613778][ T4307] [ 66.613778][ T4307] -> #0 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}: [ 66.623584][ T4307] __lock_acquire+0x2c66/0x7b50 [ 66.628949][ T4307] lock_acquire+0x19e/0x400 [ 66.633962][ T4307] __flush_work+0x116/0x210 [ 66.638979][ T4307] __cancel_work_timer+0x3f4/0x560 [ 66.644605][ T4307] hci_request_cancel_all+0xcc/0x300 [ 66.650405][ T4307] hci_dev_do_close+0x4e/0x1020 [ 66.655766][ T4307] hci_rfkill_set_block+0x101/0x180 [ 66.661479][ T4307] rfkill_set_block+0x1c1/0x3c0 [ 66.666842][ T4307] rfkill_fop_write+0x453/0x560 [ 66.672206][ T4307] vfs_write+0x304/0xd70 [ 66.676959][ T4307] ksys_write+0x153/0x260 [ 66.681802][ T4307] do_syscall_64+0x4c/0xa0 [ 66.686738][ T4307] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 66.693133][ T4307] [ 66.693133][ T4307] other info that might help us debug this: [ 66.693133][ T4307] [ 66.703336][ T4307] Chain exists of: [ 66.703336][ T4307] (work_completion)(&hdev->bg_scan_update) --> &data->open_mutex --> rfkill_global_mutex [ 66.703336][ T4307] [ 66.719033][ T4307] Possible unsafe locking scenario: [ 66.719033][ T4307] [ 66.726458][ T4307] CPU0 CPU1 [ 66.731798][ T4307] ---- ---- [ 66.737138][ T4307] lock(rfkill_global_mutex); [ 66.741881][ T4307] lock(&data->open_mutex); [ 66.748969][ T4307] lock(rfkill_global_mutex); [ 66.756229][ T4307] lock((work_completion)(&hdev->bg_scan_update)); [ 66.762794][ T4307] [ 66.762794][ T4307] *** DEADLOCK *** [ 66.762794][ T4307] [ 66.770910][ T4307] 1 lock held by syz.0.17/4307: [ 66.775733][ T4307] #0: ffffffff8d6d3c28 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x1ae/0x560 [ 66.785796][ T4307] [ 66.785796][ T4307] stack backtrace: [ 66.791677][ T4307] CPU: 1 PID: 4307 Comm: syz.0.17 Not tainted syzkaller #0 [ 66.798853][ T4307] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 [ 66.808891][ T4307] Call Trace: [ 66.812155][ T4307] [ 66.815065][ T4307] dump_stack_lvl+0x188/0x250 [ 66.819722][ T4307] ? load_image+0x410/0x410 [ 66.824205][ T4307] ? show_regs_print_info+0x20/0x20 [ 66.829395][ T4307] ? print_circular_bug+0x12b/0x1a0 [ 66.834575][ T4307] check_noncircular+0x296/0x330 [ 66.839491][ T4307] ? look_up_lock_class+0x71/0x110 [ 66.844581][ T4307] ? add_chain_block+0x9b0/0x9b0 [ 66.849495][ T4307] ? lockdep_lock+0xf1/0x1f0 [ 66.854065][ T4307] ? __lock_acquire+0x1305/0x7b50 [ 66.859070][ T4307] ? mark_lock+0x94/0x320 [ 66.863375][ T4307] ? _find_first_zero_bit+0xd1/0xf0 [ 66.868552][ T4307] __lock_acquire+0x2c66/0x7b50 [ 66.873387][ T4307] ? verify_lock_unused+0x140/0x140 [ 66.878566][ T4307] ? verify_lock_unused+0x140/0x140 [ 66.883747][ T4307] lock_acquire+0x19e/0x400 [ 66.888228][ T4307] ? __flush_work+0xfa/0x210 [ 66.892795][ T4307] ? __lock_acquire+0x7b50/0x7b50 [ 66.897797][ T4307] ? read_lock_is_recursive+0x10/0x10 [ 66.903156][ T4307] ? start_flush_work+0x784/0x830 [ 66.908162][ T4307] __flush_work+0x116/0x210 [ 66.912641][ T4307] ? __flush_work+0xfa/0x210 [ 66.917207][ T4307] ? flush_work+0x20/0x20 [ 66.921511][ T4307] ? try_to_grab_pending+0xfb/0x820 [ 66.926689][ T4307] ? mark_lock+0x94/0x320 [ 66.930999][ T4307] ? lockdep_hardirqs_on_prepare+0x448/0x7c0 [ 66.936958][ T4307] ? lock_chain_count+0x20/0x20 [ 66.941791][ T4307] ? mark_lock+0x94/0x320 [ 66.946099][ T4307] ? __cancel_work_timer+0x36a/0x560 [ 66.951363][ T4307] __cancel_work_timer+0x3f4/0x560 [ 66.956454][ T4307] ? cancel_work_sync+0x20/0x20 [ 66.961283][ T4307] ? __cancel_work+0x1f9/0x2e0 [ 66.966022][ T4307] ? lockdep_hardirqs_on+0x94/0x140 [ 66.971200][ T4307] ? __cancel_work+0x27b/0x2e0 [ 66.975944][ T4307] ? cancel_work+0x20/0x20 [ 66.980342][ T4307] hci_request_cancel_all+0xcc/0x300 [ 66.985607][ T4307] hci_dev_do_close+0x4e/0x1020 [ 66.990435][ T4307] ? _raw_spin_unlock_irqrestore+0xc1/0x120 [ 66.996306][ T4307] ? _raw_spin_unlock+0x40/0x40 [ 67.001138][ T4307] hci_rfkill_set_block+0x101/0x180 [ 67.006313][ T4307] ? rcu_lock_release+0x20/0x20 [ 67.011145][ T4307] rfkill_set_block+0x1c1/0x3c0 [ 67.015978][ T4307] rfkill_fop_write+0x453/0x560 [ 67.020821][ T4307] ? rfkill_fop_read+0x560/0x560 [ 67.025754][ T4307] ? common_file_perm+0xf0/0x1c0 [ 67.030674][ T4307] ? fsnotify_perm+0x5d/0x560 [ 67.035334][ T4307] ? security_file_permission+0x75/0xa0 [ 67.040864][ T4307] ? rfkill_fop_read+0x560/0x560 [ 67.045784][ T4307] vfs_write+0x304/0xd70 [ 67.050015][ T4307] ? file_end_write+0x250/0x250 [ 67.054847][ T4307] ? __context_tracking_exit+0x4c/0x80 [ 67.060289][ T4307] ? __fdget_pos+0x1e2/0x370 [ 67.064863][ T4307] ksys_write+0x153/0x260 [ 67.069176][ T4307] ? __ia32_sys_read+0x80/0x80 [ 67.073921][ T4307] ? lockdep_hardirqs_on+0x94/0x140 [ 67.079103][ T4307] do_syscall_64+0x4c/0xa0 [ 67.083501][ T4307] ? clear_bhb_loop+0x30/0x80 [ 67.088161][ T4307] ? clear_bhb_loop+0x30/0x80 [ 67.092824][ T4307] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 67.098713][ T4307] RIP: 0033:0x7fd5eb718e99 [ 67.103120][ T4307] 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 [ 67.122704][ T4307] RSP: 002b:00007ffc476fa778 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 67.131098][ T4307] RAX: ffffffffffffffda RBX: 00007fd5eb9a0fa0 RCX: 00007fd5eb718e99 [ 67.139050][ T4307] RDX: 0000000000000008 RSI: 0000200000000100 RDI: 0000000000000003 [ 67.147003][ T4307] RBP: 00007fd5eb7aeeaf R08: 0000000000000000 R09: 0000000000000000 [ 67.154957][ T4307] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 67.162907][ T4307] R13: 00007fd5eb9a0fac R14: 00007fd5eb9a0fa0 R15: 00007fd5eb9a0fa0 [ 67.170862][ T4307]