Warning: Permanently added '10.128.0.23' (ED25519) to the list of known hosts. 2026/04/26 02:07:07 parsed 1 programs [ 70.353890][ T4188] cgroup: Unknown subsys name 'net' [ 70.479056][ T4188] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size = 127995904 bytes [ 71.326514][ T1423] ieee802154 phy0 wpan0: encryption failed: -22 [ 71.333116][ T1423] ieee802154 phy1 wpan1: encryption failed: -22 [ 71.968014][ T4188] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k FS [ 74.403227][ T155] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 74.412303][ T155] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 74.421398][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 74.450084][ T144] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 74.458984][ T144] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 74.467690][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 75.300241][ T1262] ODEBUG: Out of memory. ODEBUG disabled [ 75.522081][ T4249] chnl_net:caif_netlink_parms(): no params data found [ 75.611549][ T4249] bridge0: port 1(bridge_slave_0) entered blocking state [ 75.620694][ T4249] bridge0: port 1(bridge_slave_0) entered disabled state [ 75.629461][ T4249] device bridge_slave_0 entered promiscuous mode [ 75.646324][ T4249] bridge0: port 2(bridge_slave_1) entered blocking state [ 75.653589][ T4249] bridge0: port 2(bridge_slave_1) entered disabled state [ 75.661781][ T4249] device bridge_slave_1 entered promiscuous mode [ 75.684618][ T4249] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 75.695710][ T4249] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 75.717632][ T4249] team0: Port device team_slave_0 added [ 75.725502][ T4249] team0: Port device team_slave_1 added [ 75.742047][ T4249] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 75.749181][ T4249] 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. [ 75.775459][ T4249] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 75.788222][ T4249] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 75.795348][ T4249] 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. [ 75.821554][ T4249] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 75.850834][ T4249] device hsr_slave_0 entered promiscuous mode [ 75.858327][ T4249] device hsr_slave_1 entered promiscuous mode [ 75.967353][ T4249] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 75.978889][ T4249] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 75.987938][ T4249] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 75.998090][ T4249] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 76.035639][ T4249] bridge0: port 2(bridge_slave_1) entered blocking state [ 76.043401][ T4249] bridge0: port 2(bridge_slave_1) entered forwarding state [ 76.050993][ T4249] bridge0: port 1(bridge_slave_0) entered blocking state [ 76.058186][ T4249] bridge0: port 1(bridge_slave_0) entered forwarding state [ 76.115337][ T4249] 8021q: adding VLAN 0 to HW filter on device bond0 [ 76.129278][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 76.139077][ T144] bridge0: port 1(bridge_slave_0) entered disabled state [ 76.148144][ T144] bridge0: port 2(bridge_slave_1) entered disabled state [ 76.156344][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 76.186385][ T4249] 8021q: adding VLAN 0 to HW filter on device team0 [ 76.197434][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 76.206440][ T155] bridge0: port 1(bridge_slave_0) entered blocking state [ 76.213566][ T155] bridge0: port 1(bridge_slave_0) entered forwarding state [ 76.242378][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 76.251124][ T144] bridge0: port 2(bridge_slave_1) entered blocking state [ 76.258256][ T144] bridge0: port 2(bridge_slave_1) entered forwarding state [ 76.274239][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 76.290269][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 76.298682][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 76.307833][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 76.321882][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 76.349676][ T4249] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 76.465270][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 76.473257][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 76.488077][ T4249] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 76.516069][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 76.524878][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 76.543829][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 76.552123][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 76.561169][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 76.569641][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 76.580133][ T4249] device veth0_vlan entered promiscuous mode [ 76.607273][ T4249] device veth1_vlan entered promiscuous mode [ 76.628376][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 76.637442][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 76.645907][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 76.654877][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 76.665894][ T4249] device veth0_macvtap entered promiscuous mode [ 76.685650][ T4249] device veth1_macvtap entered promiscuous mode [ 76.710859][ T4249] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 76.719746][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 76.727990][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 76.736592][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 76.745623][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 76.757048][ T4249] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 76.767151][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 76.777207][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 76.794910][ T4249] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 76.804065][ T4249] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 76.813748][ T4249] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 76.822547][ T4249] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 76.947376][ T4249] syz-executor (4249) used greatest stack depth: 21104 bytes left 2026/04/26 02:07:17 executed programs: 0 [ 78.070747][ T4295] chnl_net:caif_netlink_parms(): no params data found [ 78.133120][ T4295] bridge0: port 1(bridge_slave_0) entered blocking state [ 78.140315][ T4295] bridge0: port 1(bridge_slave_0) entered disabled state [ 78.148869][ T4295] device bridge_slave_0 entered promiscuous mode [ 78.158401][ T4295] bridge0: port 2(bridge_slave_1) entered blocking state [ 78.165998][ T4295] bridge0: port 2(bridge_slave_1) entered disabled state [ 78.174025][ T4295] device bridge_slave_1 entered promiscuous mode [ 78.197313][ T4295] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 78.209470][ T4295] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 78.233800][ T4295] team0: Port device team_slave_0 added [ 78.242073][ T4295] team0: Port device team_slave_1 added [ 78.263489][ T4295] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 78.270543][ T4295] 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. [ 78.297067][ T4295] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 78.310614][ T4295] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 78.317651][ T4295] 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. [ 78.343806][ T4295] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 78.381693][ T4295] device hsr_slave_0 entered promiscuous mode [ 78.388658][ T4295] device hsr_slave_1 entered promiscuous mode [ 78.395414][ T4295] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 78.403708][ T4295] Cannot create hsr debugfs directory [ 78.490506][ T4295] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 79.962905][ T4210] Bluetooth: hci0: command 0x0409 tx timeout [ 81.879049][ T4295] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 82.042457][ T4252] Bluetooth: hci0: command 0x041b tx timeout [ 82.197466][ T4295] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 82.268971][ T4295] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 82.380223][ T4295] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 82.391014][ T4295] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 82.400864][ T4295] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 82.409926][ T4295] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 82.487462][ T4295] 8021q: adding VLAN 0 to HW filter on device bond0 [ 82.499408][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 82.507648][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 82.518598][ T4295] 8021q: adding VLAN 0 to HW filter on device team0 [ 82.545250][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 82.554149][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 82.563692][ T155] bridge0: port 1(bridge_slave_0) entered blocking state [ 82.570774][ T155] bridge0: port 1(bridge_slave_0) entered forwarding state [ 82.583088][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 82.607028][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 82.616446][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 82.625038][ T155] bridge0: port 2(bridge_slave_1) entered blocking state [ 82.632117][ T155] bridge0: port 2(bridge_slave_1) entered forwarding state [ 82.641737][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 82.654180][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 82.678059][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 82.686999][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 82.696632][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 82.707053][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 82.715922][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 82.731298][ T1262] device hsr_slave_0 left promiscuous mode [ 82.738584][ T1262] device hsr_slave_1 left promiscuous mode [ 82.745107][ T1262] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 82.753200][ T1262] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 82.761821][ T1262] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 82.769506][ T1262] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 82.777211][ T1262] device bridge_slave_1 left promiscuous mode [ 82.784965][ T1262] bridge0: port 2(bridge_slave_1) entered disabled state [ 82.797639][ T1262] device bridge_slave_0 left promiscuous mode [ 82.804154][ T1262] bridge0: port 1(bridge_slave_0) entered disabled state [ 82.821763][ T1262] device veth1_macvtap left promiscuous mode [ 82.829059][ T1262] device veth0_macvtap left promiscuous mode [ 82.835290][ T1262] device veth1_vlan left promiscuous mode [ 82.841187][ T1262] device veth0_vlan left promiscuous mode [ 82.999771][ T1262] team0 (unregistering): Port device team_slave_1 removed [ 83.014930][ T1262] team0 (unregistering): Port device team_slave_0 removed [ 83.027613][ T1262] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 83.041591][ T1262] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 83.094922][ T1262] bond0 (unregistering): Released all slaves [ 83.158748][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 83.167553][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 83.180264][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 83.188882][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 83.199324][ T4295] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 83.307432][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 83.315186][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 83.328368][ T4295] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 83.345372][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 83.354577][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 83.376361][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 83.385418][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 83.400046][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 83.408185][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 83.416863][ T4295] device veth0_vlan entered promiscuous mode [ 83.428218][ T4295] device veth1_vlan entered promiscuous mode [ 83.448628][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 83.457114][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 83.465852][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 83.474524][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 83.487154][ T4295] device veth0_macvtap entered promiscuous mode [ 83.497430][ T4295] device veth1_macvtap entered promiscuous mode [ 83.513478][ T4295] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 83.521141][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 83.529745][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 83.538406][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 83.547418][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 83.560085][ T4295] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 83.569139][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 83.579029][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 83.594183][ T4295] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 83.603638][ T4295] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 83.612668][ T4295] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 83.621456][ T4295] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 83.678963][ T9] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 83.692940][ T9] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 83.701930][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 83.733949][ T154] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 83.741931][ T154] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 83.751268][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 83.849188][ T4307] [ 83.851573][ T4307] ====================================================== [ 83.858611][ T4307] WARNING: possible circular locking dependency detected [ 83.865667][ T4307] syzkaller #0 Not tainted [ 83.870103][ T4307] ------------------------------------------------------ [ 83.877140][ T4307] syz.0.17/4307 is trying to acquire lock: [ 83.882963][ T4307] ffff888026a28c28 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}, at: __flush_work+0xfa/0x210 [ 83.894097][ T4307] [ 83.894097][ T4307] but task is already holding lock: [ 83.901486][ T4307] ffffffff8d6c5de8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x18b/0x560 [ 83.911278][ T4307] [ 83.911278][ T4307] which lock already depends on the new lock. [ 83.911278][ T4307] [ 83.921889][ T4307] [ 83.921889][ T4307] the existing dependency chain (in reverse order) is: [ 83.931054][ T4307] [ 83.931054][ T4307] -> #4 (rfkill_global_mutex){+.+.}-{3:3}: [ 83.939090][ T4307] __mutex_lock_common+0x1e3/0x2400 [ 83.944855][ T4307] mutex_lock_nested+0x17/0x20 [ 83.950179][ T4307] rfkill_register+0x33/0x980 [ 83.955417][ T4307] hci_register_dev+0x452/0x970 [ 83.960832][ T4307] vhci_create_device+0x32c/0x5c0 [ 83.966409][ T4307] vhci_write+0x391/0x450 [ 83.971301][ T4307] vfs_write+0x745/0xd60 [ 83.976089][ T4307] ksys_write+0x152/0x260 [ 83.980961][ T4307] do_syscall_64+0x4c/0xa0 [ 83.985931][ T4307] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 83.992389][ T4307] [ 83.992389][ T4307] -> #3 (&data->open_mutex){+.+.}-{3:3}: [ 84.000237][ T4307] __mutex_lock_common+0x1e3/0x2400 [ 84.005993][ T4307] mutex_lock_nested+0x17/0x20 [ 84.011324][ T4307] vhci_send_frame+0x88/0x100 [ 84.016545][ T4307] hci_send_frame+0x1a9/0x2e0 [ 84.021766][ T4307] hci_tx_work+0x9f9/0x1710 [ 84.026812][ T4307] process_one_work+0x85f/0x1010 [ 84.032291][ T4307] worker_thread+0xaa6/0x1290 [ 84.037517][ T4307] kthread+0x436/0x520 [ 84.042130][ T4307] ret_from_fork+0x1f/0x30 [ 84.047090][ T4307] [ 84.047090][ T4307] -> #2 ((work_completion)(&hdev->tx_work)){+.+.}-{0:0}: [ 84.056325][ T4307] __flush_work+0x116/0x210 [ 84.061380][ T4307] hci_dev_do_close+0x1e7/0x1030 [ 84.066869][ T4307] hci_unregister_dev+0x2d7/0x580 [ 84.072538][ T4307] vhci_release+0x73/0xc0 [ 84.077422][ T4307] __fput+0x234/0x930 [ 84.081948][ T4307] task_work_run+0x125/0x1a0 [ 84.087112][ T4307] do_exit+0x626/0x20c0 [ 84.091822][ T4307] do_group_exit+0x12e/0x300 [ 84.096964][ T4307] get_signal+0x6ca/0x12c0 [ 84.101940][ T4307] arch_do_signal_or_restart+0xe7/0x12c0 [ 84.108127][ T4307] exit_to_user_mode_loop+0x9e/0x130 [ 84.114163][ T4307] exit_to_user_mode_prepare+0xee/0x180 [ 84.120271][ T4307] syscall_exit_to_user_mode+0x16/0x40 [ 84.126289][ T4307] do_syscall_64+0x58/0xa0 [ 84.131264][ T4307] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 84.137716][ T4307] [ 84.137716][ T4307] -> #1 (&hdev->req_lock){+.+.}-{3:3}: [ 84.145398][ T4307] __mutex_lock_common+0x1e3/0x2400 [ 84.151244][ T4307] mutex_lock_nested+0x17/0x20 [ 84.156557][ T4307] bg_scan_update+0x44/0x3b0 [ 84.161698][ T4307] process_one_work+0x85f/0x1010 [ 84.167178][ T4307] worker_thread+0xaa6/0x1290 [ 84.172465][ T4307] kthread+0x436/0x520 [ 84.177081][ T4307] ret_from_fork+0x1f/0x30 [ 84.182042][ T4307] [ 84.182042][ T4307] -> #0 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}: [ 84.191890][ T4307] __lock_acquire+0x2c42/0x7d10 [ 84.197297][ T4307] lock_acquire+0x19e/0x400 [ 84.202353][ T4307] __flush_work+0x116/0x210 [ 84.207409][ T4307] __cancel_work_timer+0x3f4/0x560 [ 84.213084][ T4307] hci_request_cancel_all+0xcc/0x300 [ 84.218922][ T4307] hci_dev_do_close+0x4e/0x1030 [ 84.224321][ T4307] hci_rfkill_set_block+0x10a/0x190 [ 84.230488][ T4307] rfkill_set_block+0x1c9/0x3d0 [ 84.235903][ T4307] rfkill_fop_write+0x452/0x560 [ 84.241312][ T4307] vfs_write+0x30b/0xd60 [ 84.246105][ T4307] ksys_write+0x152/0x260 [ 84.250994][ T4307] do_syscall_64+0x4c/0xa0 [ 84.256141][ T4307] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 84.262588][ T4307] [ 84.262588][ T4307] other info that might help us debug this: [ 84.262588][ T4307] [ 84.272838][ T4307] Chain exists of: [ 84.272838][ T4307] (work_completion)(&hdev->bg_scan_update) --> &data->open_mutex --> rfkill_global_mutex [ 84.272838][ T4307] [ 84.288708][ T4307] Possible unsafe locking scenario: [ 84.288708][ T4307] [ 84.296179][ T4307] CPU0 CPU1 [ 84.301563][ T4307] ---- ---- [ 84.307076][ T4307] lock(rfkill_global_mutex); [ 84.311867][ T4307] lock(&data->open_mutex); [ 84.319017][ T4307] lock(rfkill_global_mutex); [ 84.326355][ T4307] lock((work_completion)(&hdev->bg_scan_update)); [ 84.332972][ T4307] [ 84.332972][ T4307] *** DEADLOCK *** [ 84.332972][ T4307] [ 84.341135][ T4307] 1 lock held by syz.0.17/4307: [ 84.346014][ T4307] #0: ffffffff8d6c5de8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x18b/0x560 [ 84.356155][ T4307] [ 84.356155][ T4307] stack backtrace: [ 84.362088][ T4307] CPU: 0 PID: 4307 Comm: syz.0.17 Not tainted syzkaller #0 [ 84.369312][ T4307] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 84.379410][ T4307] Call Trace: [ 84.382723][ T4307] [ 84.385683][ T4307] dump_stack_lvl+0x188/0x250 [ 84.390386][ T4307] ? load_image+0x400/0x400 [ 84.394912][ T4307] ? show_regs_print_info+0x20/0x20 [ 84.400139][ T4307] ? print_circular_bug+0x12b/0x1a0 [ 84.405373][ T4307] check_noncircular+0x296/0x330 [ 84.410345][ T4307] ? look_up_lock_class+0x71/0x110 [ 84.415494][ T4307] ? add_chain_block+0x940/0x940 [ 84.420586][ T4307] ? lockdep_lock+0xf1/0x1f0 [ 84.425249][ T4307] ? __lock_acquire+0x12e8/0x7d10 [ 84.430310][ T4307] ? mark_lock+0x94/0x320 [ 84.434669][ T4307] __lock_acquire+0x2c42/0x7d10 [ 84.439572][ T4307] ? verify_lock_unused+0x140/0x140 [ 84.444805][ T4307] ? mark_lock+0x94/0x320 [ 84.449164][ T4307] lock_acquire+0x19e/0x400 [ 84.453699][ T4307] ? __flush_work+0xfa/0x210 [ 84.458318][ T4307] ? __lock_acquire+0x7d10/0x7d10 [ 84.463381][ T4307] ? read_lock_is_recursive+0x10/0x10 [ 84.468795][ T4307] ? start_flush_work+0x776/0x820 [ 84.473966][ T4307] __flush_work+0x116/0x210 [ 84.478540][ T4307] ? __flush_work+0xfa/0x210 [ 84.483166][ T4307] ? flush_work+0x20/0x20 [ 84.487514][ T4307] ? try_to_grab_pending+0xfa/0x7f0 [ 84.492857][ T4307] ? mark_lock+0x94/0x320 [ 84.497229][ T4307] ? lockdep_hardirqs_on_prepare+0x409/0x770 [ 84.503245][ T4307] ? lock_chain_count+0x20/0x20 [ 84.508135][ T4307] ? mark_lock+0x94/0x320 [ 84.512502][ T4307] ? __cancel_work_timer+0x36a/0x560 [ 84.517830][ T4307] __cancel_work_timer+0x3f4/0x560 [ 84.522985][ T4307] ? cancel_work_sync+0x20/0x20 [ 84.527872][ T4307] ? __cancel_work+0x1f9/0x2e0 [ 84.532693][ T4307] ? lockdep_hardirqs_on+0x94/0x140 [ 84.538020][ T4307] ? __cancel_work+0x27b/0x2e0 [ 84.542830][ T4307] ? cancel_work+0x20/0x20 [ 84.547290][ T4307] ? lock_chain_count+0x20/0x20 [ 84.552268][ T4307] hci_request_cancel_all+0xcc/0x300 [ 84.557587][ T4307] hci_dev_do_close+0x4e/0x1030 [ 84.562474][ T4307] ? _raw_spin_unlock_irqrestore+0xc1/0x120 [ 84.568397][ T4307] ? _raw_spin_unlock+0x40/0x40 [ 84.573278][ T4307] hci_rfkill_set_block+0x10a/0x190 [ 84.578512][ T4307] ? rcu_lock_release+0x20/0x20 [ 84.583399][ T4307] rfkill_set_block+0x1c9/0x3d0 [ 84.588296][ T4307] rfkill_fop_write+0x452/0x560 [ 84.593186][ T4307] ? rfkill_fop_read+0x520/0x520 [ 84.598159][ T4307] ? common_file_perm+0x140/0x1c0 [ 84.603258][ T4307] ? fsnotify_perm+0x5d/0x560 [ 84.607971][ T4307] ? security_file_permission+0x75/0xa0 [ 84.613590][ T4307] ? rfkill_fop_read+0x520/0x520 [ 84.618568][ T4307] vfs_write+0x30b/0xd60 [ 84.622841][ T4307] ? file_end_write+0x250/0x250 [ 84.627728][ T4307] ? __context_tracking_exit+0x4c/0x80 [ 84.633272][ T4307] ? __lock_acquire+0x7d10/0x7d10 [ 84.638420][ T4307] ? __fdget_pos+0x1e2/0x370 [ 84.643038][ T4307] ksys_write+0x152/0x260 [ 84.647401][ T4307] ? __ia32_sys_read+0x80/0x80 [ 84.652205][ T4307] ? lockdep_hardirqs_on+0x94/0x140 [ 84.657446][ T4307] do_syscall_64+0x4c/0xa0 [ 84.661894][ T4307] ? clear_bhb_loop+0x30/0x80 [ 84.666636][ T4307] ? clear_bhb_loop+0x30/0x80 [ 84.671339][ T4307] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 84.677313][ T4307] RIP: 0033:0x7fb1d218bdd9 [ 84.681774][ 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 [ 84.701749][ T4307] RSP: 002b:00007ffc6e588b38 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 84.710560][ T4307] RAX: ffffffffffffffda RBX: 00007fb1d2404fa0 RCX: 00007fb1d218bdd9 [ 84.718574][ T4307] RDX: 0000000000000008 RSI: 0000200000000040 RDI: 0000000000000003 [ 84.726622][ T4307] RBP: 00007fb1d2221d69 R08: 0000000000000000 R09: 0000000000000000 [ 84.734715][ T4307] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 84.742715][ T4307] R13: 00007fb1d2404fac R14: 00007fb1d2404fa0 R15: 00007fb1d2404fa0 [ 84.750723][ T4307] [ 84.763323][ T4252] Bluetooth: hci0: command 0x040f tx timeout