Warning: Permanently added '10.128.0.247' (ED25519) to the list of known hosts. 2026/04/06 15:27:43 parsed 1 programs [ 67.088202][ T4188] cgroup: Unknown subsys name 'net' [ 67.202426][ T4188] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size = 127995904 bytes [ 68.685996][ T4188] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k FS [ 70.234113][ T4201] chnl_net:caif_netlink_parms(): no params data found [ 70.279621][ T4201] bridge0: port 1(bridge_slave_0) entered blocking state [ 70.287382][ T4201] bridge0: port 1(bridge_slave_0) entered disabled state [ 70.295139][ T4201] device bridge_slave_0 entered promiscuous mode [ 70.307006][ T4201] bridge0: port 2(bridge_slave_1) entered blocking state [ 70.314146][ T4201] bridge0: port 2(bridge_slave_1) entered disabled state [ 70.322208][ T4201] device bridge_slave_1 entered promiscuous mode [ 70.345239][ T4201] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 70.356613][ T4201] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 70.377711][ T4201] team0: Port device team_slave_0 added [ 70.384808][ T4201] team0: Port device team_slave_1 added [ 70.401724][ T4201] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 70.408848][ T4201] 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. [ 70.435426][ T4201] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 70.449431][ T4201] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 70.456500][ T4201] batman_adv: batadv0: The MTU of interface batadv_slave_1 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. [ 70.482614][ T4201] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 70.512385][ T4201] device hsr_slave_0 entered promiscuous mode [ 70.519341][ T4201] device hsr_slave_1 entered promiscuous mode [ 70.612333][ T4201] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 70.623054][ T4201] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 70.632826][ T4201] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 70.642830][ T4201] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 70.666228][ T4201] bridge0: port 2(bridge_slave_1) entered blocking state [ 70.673547][ T4201] bridge0: port 2(bridge_slave_1) entered forwarding state [ 70.682257][ T4201] bridge0: port 1(bridge_slave_0) entered blocking state [ 70.689470][ T4201] bridge0: port 1(bridge_slave_0) entered forwarding state [ 70.734923][ T4201] 8021q: adding VLAN 0 to HW filter on device bond0 [ 70.749841][ T754] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 70.760733][ T754] bridge0: port 1(bridge_slave_0) entered disabled state [ 70.769497][ T754] bridge0: port 2(bridge_slave_1) entered disabled state [ 70.778797][ T754] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 70.791730][ T4201] 8021q: adding VLAN 0 to HW filter on device team0 [ 70.806006][ T754] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 70.815248][ T754] bridge0: port 1(bridge_slave_0) entered blocking state [ 70.822481][ T754] bridge0: port 1(bridge_slave_0) entered forwarding state [ 70.834799][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 70.844118][ T9] bridge0: port 2(bridge_slave_1) entered blocking state [ 70.851412][ T9] bridge0: port 2(bridge_slave_1) entered forwarding state [ 70.878963][ T754] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 70.890192][ T754] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 70.903319][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 70.920986][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 70.934758][ T4201] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 70.947819][ T4201] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 70.957203][ T754] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 71.089202][ T754] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 71.096718][ T754] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 71.112052][ T4201] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 71.133428][ T754] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 71.158540][ T4209] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 71.168912][ T4209] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 71.178988][ T4209] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 71.188725][ T4201] device veth0_vlan entered promiscuous mode [ 71.204083][ T4201] device veth1_vlan entered promiscuous mode [ 71.230661][ T4209] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 71.243010][ T4209] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 71.256224][ T4201] device veth0_macvtap entered promiscuous mode [ 71.268879][ T4201] device veth1_macvtap entered promiscuous mode [ 71.303433][ T4201] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 71.311168][ T4209] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 71.320605][ T4209] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 71.329558][ T4209] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 71.339601][ T4209] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 71.353079][ T4201] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 71.361336][ T4209] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 71.372131][ T4209] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 71.385211][ T4201] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 71.394840][ T4201] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 71.405987][ T4201] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 71.415648][ T4201] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 71.450733][ T1431] ieee802154 phy0 wpan0: encryption failed: -22 [ 71.457508][ T1431] ieee802154 phy1 wpan1: encryption failed: -22 [ 71.580892][ T4201] syz-executor (4201) used greatest stack depth: 20080 bytes left [ 72.289382][ T154] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 72.302183][ T154] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 72.321373][ T754] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 72.335206][ T4209] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 72.344884][ T4209] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 72.353502][ T754] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 72.413066][ T1239] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 75.152804][ T1239] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 76.992341][ T1239] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 77.043828][ T1239] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 2026/04/06 15:27:56 executed programs: 0 [ 77.901056][ T4303] chnl_net:caif_netlink_parms(): no params data found [ 77.981506][ T4303] bridge0: port 1(bridge_slave_0) entered blocking state [ 77.989278][ T4303] bridge0: port 1(bridge_slave_0) entered disabled state [ 77.997889][ T4303] device bridge_slave_0 entered promiscuous mode [ 78.023272][ T4303] bridge0: port 2(bridge_slave_1) entered blocking state [ 78.030800][ T4303] bridge0: port 2(bridge_slave_1) entered disabled state [ 78.039219][ T4303] device bridge_slave_1 entered promiscuous mode [ 78.085278][ T4303] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 78.109190][ T4303] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 78.133533][ T4303] team0: Port device team_slave_0 added [ 78.157331][ T4303] team0: Port device team_slave_1 added [ 78.175946][ T4303] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 78.182987][ 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. [ 78.209981][ T4303] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 78.239955][ T4303] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 78.247127][ 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. [ 78.273555][ T4303] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 78.326334][ T4303] device hsr_slave_0 entered promiscuous mode [ 78.333471][ T4303] device hsr_slave_1 entered promiscuous mode [ 78.340954][ T4303] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 78.349202][ T4303] Cannot create hsr debugfs directory [ 78.363823][ T1239] device hsr_slave_0 left promiscuous mode [ 78.373276][ T1239] device hsr_slave_1 left promiscuous mode [ 78.381259][ T1239] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 78.392101][ T1239] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 78.401675][ T1239] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 78.411966][ T1239] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 78.420888][ T1239] device bridge_slave_1 left promiscuous mode [ 78.430835][ T1239] bridge0: port 2(bridge_slave_1) entered disabled state [ 78.451243][ T1239] device bridge_slave_0 left promiscuous mode [ 78.457688][ T1239] bridge0: port 1(bridge_slave_0) entered disabled state [ 78.482601][ T1239] device veth1_macvtap left promiscuous mode [ 78.489916][ T1239] device veth0_macvtap left promiscuous mode [ 78.496038][ T1239] device veth1_vlan left promiscuous mode [ 78.505149][ T1239] device veth0_vlan left promiscuous mode [ 78.713512][ T1239] team0 (unregistering): Port device team_slave_1 removed [ 78.726326][ T1239] team0 (unregistering): Port device team_slave_0 removed [ 78.738424][ T1239] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 78.752283][ T1239] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 78.805315][ T1239] bond0 (unregistering): Released all slaves [ 79.459754][ T4303] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 79.472366][ T4303] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 79.498936][ T4303] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 79.519811][ T4303] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 79.634916][ T4303] 8021q: adding VLAN 0 to HW filter on device bond0 [ 79.664802][ T754] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 79.675201][ T754] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 79.698616][ T4303] 8021q: adding VLAN 0 to HW filter on device team0 [ 79.710641][ T754] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 79.720548][ T754] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 79.730090][ T754] bridge0: port 1(bridge_slave_0) entered blocking state [ 79.737353][ T754] bridge0: port 1(bridge_slave_0) entered forwarding state [ 79.757742][ T4208] Bluetooth: hci0: command 0x0409 tx timeout [ 79.765237][ T754] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 79.774104][ T754] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 79.783257][ T754] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 79.792569][ T754] bridge0: port 2(bridge_slave_1) entered blocking state [ 79.799714][ T754] bridge0: port 2(bridge_slave_1) entered forwarding state [ 79.809077][ T754] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 79.828884][ T754] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 79.839985][ T754] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 79.851866][ T754] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 79.862885][ T754] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 79.872663][ T754] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 79.892791][ T754] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 79.902426][ T754] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 79.911729][ T754] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 79.924034][ T754] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 79.933917][ T754] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 79.946370][ T4303] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 80.139081][ T754] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 80.146725][ T754] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 80.170761][ T4303] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 80.220974][ T754] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 80.231291][ T754] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 80.272415][ T754] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 80.283118][ T754] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 80.310757][ T4303] device veth0_vlan entered promiscuous mode [ 80.321874][ T754] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 80.331617][ T754] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 80.346205][ T4303] device veth1_vlan entered promiscuous mode [ 80.395902][ T754] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 80.418872][ T754] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 80.432180][ T754] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 80.459034][ T754] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 80.483848][ T4303] device veth0_macvtap entered promiscuous mode [ 80.494903][ T4303] device veth1_macvtap entered promiscuous mode [ 80.539512][ T4303] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 80.559313][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 80.568278][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 80.588893][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 80.607664][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 80.631798][ T4303] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 80.660791][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 80.670533][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 80.690493][ T4303] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 80.706985][ T4303] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 80.715767][ T4303] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 80.748199][ T4303] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 80.870320][ T754] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 80.890568][ T754] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 80.909398][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 80.945499][ T754] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 80.957646][ T754] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 80.965335][ T754] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 81.192366][ T4413] [ 81.194868][ T4413] ====================================================== [ 81.201905][ T4413] WARNING: possible circular locking dependency detected [ 81.209028][ T4413] syzkaller #0 Not tainted [ 81.213455][ T4413] ------------------------------------------------------ [ 81.220684][ T4413] syz.0.17/4413 is trying to acquire lock: [ 81.226605][ T4413] ffff888026740c28 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}, at: __flush_work+0xfa/0x210 [ 81.237691][ T4413] [ 81.237691][ T4413] but task is already holding lock: [ 81.245182][ T4413] ffffffff8d6c51a8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x18b/0x560 [ 81.254890][ T4413] [ 81.254890][ T4413] which lock already depends on the new lock. [ 81.254890][ T4413] [ 81.265317][ T4413] [ 81.265317][ T4413] the existing dependency chain (in reverse order) is: [ 81.274612][ T4413] [ 81.274612][ T4413] -> #4 (rfkill_global_mutex){+.+.}-{3:3}: [ 81.282640][ T4413] __mutex_lock_common+0x1e3/0x2400 [ 81.288391][ T4413] mutex_lock_nested+0x17/0x20 [ 81.293709][ T4413] rfkill_register+0x33/0x8a0 [ 81.298935][ T4413] hci_register_dev+0x452/0x970 [ 81.304336][ T4413] vhci_create_device+0x32c/0x5c0 [ 81.309909][ T4413] vhci_write+0x391/0x450 [ 81.314785][ T4413] vfs_write+0x745/0xd60 [ 81.319584][ T4413] ksys_write+0x152/0x260 [ 81.324555][ T4413] do_syscall_64+0x4c/0xa0 [ 81.329517][ T4413] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 81.335955][ T4413] [ 81.335955][ T4413] -> #3 (&data->open_mutex){+.+.}-{3:3}: [ 81.343896][ T4413] __mutex_lock_common+0x1e3/0x2400 [ 81.349641][ T4413] mutex_lock_nested+0x17/0x20 [ 81.355064][ T4413] vhci_send_frame+0x88/0x100 [ 81.360462][ T4413] hci_send_frame+0x1a9/0x2e0 [ 81.365684][ T4413] hci_tx_work+0x9f9/0x1710 [ 81.370730][ T4413] process_one_work+0x85f/0x1010 [ 81.376337][ T4413] worker_thread+0xaa6/0x1290 [ 81.381646][ T4413] kthread+0x436/0x520 [ 81.386312][ T4413] ret_from_fork+0x1f/0x30 [ 81.391463][ T4413] [ 81.391463][ T4413] -> #2 ((work_completion)(&hdev->tx_work)){+.+.}-{0:0}: [ 81.400703][ T4413] __flush_work+0x116/0x210 [ 81.405868][ T4413] hci_dev_do_close+0x1e7/0x1030 [ 81.411555][ T4413] hci_unregister_dev+0x2d7/0x580 [ 81.417123][ T4413] vhci_release+0x73/0xc0 [ 81.421999][ T4413] __fput+0x234/0x930 [ 81.426524][ T4413] task_work_run+0x125/0x1a0 [ 81.431661][ T4413] do_exit+0x626/0x20c0 [ 81.436357][ T4413] do_group_exit+0x12e/0x300 [ 81.441489][ T4413] get_signal+0x6ca/0x12c0 [ 81.446450][ T4413] arch_do_signal_or_restart+0xe7/0x12c0 [ 81.452716][ T4413] exit_to_user_mode_loop+0x9e/0x130 [ 81.458637][ T4413] exit_to_user_mode_prepare+0xee/0x180 [ 81.464732][ T4413] syscall_exit_to_user_mode+0x16/0x40 [ 81.470738][ T4413] do_syscall_64+0x58/0xa0 [ 81.475704][ T4413] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 81.482150][ T4413] [ 81.482150][ T4413] -> #1 (&hdev->req_lock){+.+.}-{3:3}: [ 81.489827][ T4413] __mutex_lock_common+0x1e3/0x2400 [ 81.495577][ T4413] mutex_lock_nested+0x17/0x20 [ 81.500894][ T4413] bg_scan_update+0x44/0x3b0 [ 81.506168][ T4413] process_one_work+0x85f/0x1010 [ 81.511924][ T4413] worker_thread+0xaa6/0x1290 [ 81.517286][ T4413] kthread+0x436/0x520 [ 81.521895][ T4413] ret_from_fork+0x1f/0x30 [ 81.526857][ T4413] [ 81.526857][ T4413] -> #0 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}: [ 81.536911][ T4413] __lock_acquire+0x2c42/0x7d10 [ 81.542404][ T4413] lock_acquire+0x19e/0x400 [ 81.547459][ T4413] __flush_work+0x116/0x210 [ 81.552505][ T4413] __cancel_work_timer+0x3f4/0x560 [ 81.558193][ T4413] hci_request_cancel_all+0xcc/0x300 [ 81.564240][ T4413] hci_dev_do_close+0x4e/0x1030 [ 81.569643][ T4413] hci_rfkill_set_block+0x10a/0x190 [ 81.575659][ T4413] rfkill_set_block+0x1c6/0x420 [ 81.581149][ T4413] rfkill_fop_write+0x452/0x560 [ 81.586556][ T4413] vfs_write+0x30b/0xd60 [ 81.591342][ T4413] ksys_write+0x152/0x260 [ 81.596227][ T4413] do_syscall_64+0x4c/0xa0 [ 81.601359][ T4413] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 81.607801][ T4413] [ 81.607801][ T4413] other info that might help us debug this: [ 81.607801][ T4413] [ 81.618244][ T4413] Chain exists of: [ 81.618244][ T4413] (work_completion)(&hdev->bg_scan_update) --> &data->open_mutex --> rfkill_global_mutex [ 81.618244][ T4413] [ 81.634002][ T4413] Possible unsafe locking scenario: [ 81.634002][ T4413] [ 81.641597][ T4413] CPU0 CPU1 [ 81.646987][ T4413] ---- ---- [ 81.652369][ T4413] lock(rfkill_global_mutex); [ 81.657158][ T4413] lock(&data->open_mutex); [ 81.664411][ T4413] lock(rfkill_global_mutex); [ 81.671738][ T4413] lock((work_completion)(&hdev->bg_scan_update)); [ 81.678349][ T4413] [ 81.678349][ T4413] *** DEADLOCK *** [ 81.678349][ T4413] [ 81.686598][ T4413] 1 lock held by syz.0.17/4413: [ 81.691479][ T4413] #0: ffffffff8d6c51a8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x18b/0x560 [ 81.701977][ T4413] [ 81.701977][ T4413] stack backtrace: [ 81.707928][ T4413] CPU: 1 PID: 4413 Comm: syz.0.17 Not tainted syzkaller #0 [ 81.715149][ T4413] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 81.725313][ T4413] Call Trace: [ 81.728615][ T4413] [ 81.731566][ T4413] dump_stack_lvl+0x188/0x250 [ 81.736271][ T4413] ? load_image+0x400/0x400 [ 81.740800][ T4413] ? show_regs_print_info+0x20/0x20 [ 81.746032][ T4413] ? print_circular_bug+0x12b/0x1a0 [ 81.751259][ T4413] check_noncircular+0x296/0x330 [ 81.756326][ T4413] ? look_up_lock_class+0x71/0x110 [ 81.761471][ T4413] ? add_chain_block+0x940/0x940 [ 81.766449][ T4413] ? lockdep_lock+0xf1/0x1f0 [ 81.771077][ T4413] ? __lock_acquire+0x12e8/0x7d10 [ 81.776139][ T4413] ? mark_lock+0x94/0x320 [ 81.780596][ T4413] __lock_acquire+0x2c42/0x7d10 [ 81.785489][ T4413] ? verify_lock_unused+0x140/0x140 [ 81.790807][ T4413] ? verify_lock_unused+0x140/0x140 [ 81.796039][ T4413] ? mark_lock+0x94/0x320 [ 81.800404][ T4413] lock_acquire+0x19e/0x400 [ 81.805044][ T4413] ? __flush_work+0xfa/0x210 [ 81.809661][ T4413] ? __lock_acquire+0x7d10/0x7d10 [ 81.814728][ T4413] ? read_lock_is_recursive+0x10/0x10 [ 81.820127][ T4413] ? start_flush_work+0x776/0x820 [ 81.825193][ T4413] __flush_work+0x116/0x210 [ 81.829721][ T4413] ? __flush_work+0xfa/0x210 [ 81.834522][ T4413] ? flush_work+0x20/0x20 [ 81.838875][ T4413] ? try_to_grab_pending+0xfa/0x7f0 [ 81.844100][ T4413] ? mark_lock+0x94/0x320 [ 81.848451][ T4413] ? lockdep_hardirqs_on_prepare+0x409/0x770 [ 81.854572][ T4413] ? lock_chain_count+0x20/0x20 [ 81.859449][ T4413] ? mark_lock+0x94/0x320 [ 81.863816][ T4413] ? __cancel_work_timer+0x36a/0x560 [ 81.869140][ T4413] __cancel_work_timer+0x3f4/0x560 [ 81.874382][ T4413] ? cancel_work_sync+0x20/0x20 [ 81.879343][ T4413] ? __cancel_work+0x1f9/0x2e0 [ 81.884136][ T4413] ? lockdep_hardirqs_on+0x94/0x140 [ 81.889361][ T4413] ? __cancel_work+0x27b/0x2e0 [ 81.894150][ T4413] ? cancel_work+0x20/0x20 [ 81.898656][ T4413] ? lock_chain_count+0x20/0x20 [ 81.903538][ T4413] hci_request_cancel_all+0xcc/0x300 [ 81.908852][ T4413] hci_dev_do_close+0x4e/0x1030 [ 81.913734][ T4413] ? _raw_spin_unlock_irqrestore+0xc1/0x120 [ 81.919659][ T4413] ? _raw_spin_unlock+0x40/0x40 [ 81.924984][ T4413] hci_rfkill_set_block+0x10a/0x190 [ 81.930212][ T4413] ? rcu_lock_release+0x20/0x20 [ 81.935200][ T4413] rfkill_set_block+0x1c6/0x420 [ 81.940076][ T4413] rfkill_fop_write+0x452/0x560 [ 81.945045][ T4413] ? rfkill_fop_read+0x4d0/0x4d0 [ 81.950011][ T4413] ? common_file_perm+0x110/0x1c0 [ 81.955184][ T4413] ? fsnotify_perm+0x5d/0x560 [ 81.960080][ T4413] ? security_file_permission+0x75/0xa0 [ 81.965657][ T4413] ? rfkill_fop_read+0x4d0/0x4d0 [ 81.970624][ T4413] vfs_write+0x30b/0xd60 [ 81.974905][ T4413] ? file_end_write+0x250/0x250 [ 81.979779][ T4413] ? __context_tracking_exit+0x4c/0x80 [ 81.985267][ T4413] ? __lock_acquire+0x7d10/0x7d10 [ 81.990324][ T4413] ? __fdget_pos+0x1e2/0x370 [ 81.994953][ T4413] ksys_write+0x152/0x260 [ 81.999310][ T4413] ? __ia32_sys_read+0x80/0x80 [ 82.004098][ T4413] ? lockdep_hardirqs_on+0x94/0x140 [ 82.009517][ T4413] do_syscall_64+0x4c/0xa0 [ 82.013971][ T4413] ? clear_bhb_loop+0x30/0x80 [ 82.018677][ T4413] ? clear_bhb_loop+0x30/0x80 [ 82.023383][ T4413] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 82.029305][ T4413] RIP: 0033:0x7f5317e3a819 [ 82.033740][ T4413] 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 [ 82.053549][ T4413] RSP: 002b:00007ffd63260ce8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 82.062131][ T4413] RAX: ffffffffffffffda RBX: 00007f53180b3fa0 RCX: 00007f5317e3a819 [ 82.070131][ T4413] RDX: 0000000000000008 RSI: 0000200000000080 RDI: 0000000000000003 [ 82.078133][ T4413] RBP: 00007f5317ed0c91 R08: 0000000000000000 R09: 0000000000000000 [ 82.086229][ T4413] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 82.094225][ T4413] R13: 00007f53180b3fac R14: 00007f53180b3fa0 R15: 00007f53180b3fa0 [ 82.102229][ T4413] [ 82.118154][ T4415] Bluetooth: hci0: command 0x041b tx timeout