Warning: Permanently added '10.128.0.24' (ED25519) to the list of known hosts. 2026/02/19 13:58:23 parsed 1 programs [ 47.032918][ T4187] cgroup: Unknown subsys name 'net' [ 47.195415][ T4187] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size = 127995904 bytes [ 48.453682][ T4187] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k FS [ 50.967160][ T144] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 50.984085][ T144] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 51.006330][ T1225] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 51.023302][ T144] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 51.032223][ T144] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 51.040219][ T1225] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 51.513768][ T4246] chnl_net:caif_netlink_parms(): no params data found [ 51.589214][ T4246] bridge0: port 1(bridge_slave_0) entered blocking state [ 51.609064][ T4246] bridge0: port 1(bridge_slave_0) entered disabled state [ 51.618591][ T4246] device bridge_slave_0 entered promiscuous mode [ 51.650821][ T4246] bridge0: port 2(bridge_slave_1) entered blocking state [ 51.657989][ T4246] bridge0: port 2(bridge_slave_1) entered disabled state [ 51.667246][ T4246] device bridge_slave_1 entered promiscuous mode [ 51.695684][ T4246] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 51.707427][ T4246] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 51.739721][ T4246] team0: Port device team_slave_0 added [ 51.750195][ T4246] team0: Port device team_slave_1 added [ 51.765024][ T4246] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 51.772142][ T4246] 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. [ 51.798357][ T4246] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 51.810851][ T4246] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 51.817805][ T4246] 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. [ 51.844078][ T4246] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 51.869096][ T4246] device hsr_slave_0 entered promiscuous mode [ 51.876042][ T4246] device hsr_slave_1 entered promiscuous mode [ 51.950795][ T4246] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 51.961130][ T4246] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 51.969958][ T4246] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 51.979076][ T4246] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 52.001549][ T4246] bridge0: port 2(bridge_slave_1) entered blocking state [ 52.008688][ T4246] bridge0: port 2(bridge_slave_1) entered forwarding state [ 52.016706][ T4246] bridge0: port 1(bridge_slave_0) entered blocking state [ 52.023807][ T4246] bridge0: port 1(bridge_slave_0) entered forwarding state [ 52.060979][ T4246] 8021q: adding VLAN 0 to HW filter on device bond0 [ 52.073107][ T1225] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 52.083315][ T1225] bridge0: port 1(bridge_slave_0) entered disabled state [ 52.092117][ T1225] bridge0: port 2(bridge_slave_1) entered disabled state [ 52.099793][ T1225] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 52.112823][ T4246] 8021q: adding VLAN 0 to HW filter on device team0 [ 52.124000][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 52.132799][ T154] bridge0: port 1(bridge_slave_0) entered blocking state [ 52.139856][ T154] bridge0: port 1(bridge_slave_0) entered forwarding state [ 52.151872][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 52.161544][ T144] bridge0: port 2(bridge_slave_1) entered blocking state [ 52.168583][ T144] bridge0: port 2(bridge_slave_1) entered forwarding state [ 52.187470][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 52.196241][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 52.225369][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 52.239616][ T4246] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 52.250122][ T4246] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 52.263394][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 52.273105][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 52.281635][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 52.380452][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 52.388037][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 52.401316][ T4246] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 52.418193][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 52.451387][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 52.459801][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 52.468022][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 52.480767][ T4246] device veth0_vlan entered promiscuous mode [ 52.508874][ T4246] device veth1_vlan entered promiscuous mode [ 52.527356][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 52.536177][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 52.547728][ T4246] device veth0_macvtap entered promiscuous mode [ 52.558734][ T4246] device veth1_macvtap entered promiscuous mode [ 52.591348][ T4246] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 52.599382][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 52.607826][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 52.617003][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 52.626179][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 52.637097][ T4246] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 52.645005][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 52.654502][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 52.687844][ T4246] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 52.697377][ T4246] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 52.706569][ T4246] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 52.715378][ T4246] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 52.812317][ T4246] syz-executor (4246) used greatest stack depth: 20120 bytes left 2026/02/19 13:58:31 executed programs: 0 [ 53.739462][ T4294] chnl_net:caif_netlink_parms(): no params data found [ 53.796125][ T4294] bridge0: port 1(bridge_slave_0) entered blocking state [ 53.805637][ T4294] bridge0: port 1(bridge_slave_0) entered disabled state [ 53.813684][ T4294] device bridge_slave_0 entered promiscuous mode [ 53.825472][ T4294] bridge0: port 2(bridge_slave_1) entered blocking state [ 53.834851][ T4294] bridge0: port 2(bridge_slave_1) entered disabled state [ 53.843034][ T4294] device bridge_slave_1 entered promiscuous mode [ 53.870387][ T4294] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 53.894823][ T4294] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 53.919989][ T4294] team0: Port device team_slave_0 added [ 53.928499][ T4294] team0: Port device team_slave_1 added [ 53.952567][ T4294] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 53.959535][ T4294] 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. [ 53.986978][ T4294] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 53.999288][ T4294] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 54.006345][ T4294] 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. [ 54.032344][ T4294] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 54.068364][ T4294] device hsr_slave_0 entered promiscuous mode [ 54.075214][ T4294] device hsr_slave_1 entered promiscuous mode [ 54.082693][ T4294] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 54.091050][ T4294] Cannot create hsr debugfs directory [ 54.174250][ T4294] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 54.218914][ T9] ODEBUG: Out of memory. ODEBUG disabled [ 55.630840][ T4301] Bluetooth: hci0: command 0x0409 tx timeout [ 56.965719][ T4294] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 57.644523][ T4294] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 57.706656][ T4294] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 57.717631][ T4265] Bluetooth: hci0: command 0x041b tx timeout [ 57.837202][ T4294] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 57.853700][ T4294] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 57.863898][ T4294] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 57.873235][ T4294] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 57.923300][ T4294] 8021q: adding VLAN 0 to HW filter on device bond0 [ 57.939501][ T4237] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 57.948595][ T4237] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 57.959323][ T4294] 8021q: adding VLAN 0 to HW filter on device team0 [ 57.969731][ T4237] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 57.978828][ T4237] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 57.987721][ T4237] bridge0: port 1(bridge_slave_0) entered blocking state [ 57.994821][ T4237] bridge0: port 1(bridge_slave_0) entered forwarding state [ 58.002923][ T4237] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 58.013177][ T4279] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 58.021769][ T4279] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 58.030017][ T4279] bridge0: port 2(bridge_slave_1) entered blocking state [ 58.037088][ T4279] bridge0: port 2(bridge_slave_1) entered forwarding state [ 58.058721][ T4279] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 58.069925][ T4237] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 58.081086][ T4279] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 58.089716][ T4279] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 58.098643][ T4279] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 58.109849][ T4279] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 58.118837][ T4279] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 58.142309][ T4279] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 58.151727][ T4279] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 58.161931][ T4279] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 58.170588][ T4279] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 58.181491][ T4294] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 58.263358][ T4237] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 58.271741][ T4237] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 58.283409][ T4294] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 58.305044][ T4237] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 58.314088][ T4237] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 58.331205][ T4237] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 58.339392][ T4237] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 58.354680][ T9] device hsr_slave_0 left promiscuous mode [ 58.361718][ T9] device hsr_slave_1 left promiscuous mode [ 58.367977][ T9] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 58.375746][ T9] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 58.383865][ T9] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 58.391568][ T9] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 58.399060][ T9] device bridge_slave_1 left promiscuous mode [ 58.406072][ T9] bridge0: port 2(bridge_slave_1) entered disabled state [ 58.417163][ T9] device bridge_slave_0 left promiscuous mode [ 58.424384][ T9] bridge0: port 1(bridge_slave_0) entered disabled state [ 58.439916][ T9] device veth1_macvtap left promiscuous mode [ 58.446570][ T9] device veth0_macvtap left promiscuous mode [ 58.452687][ T9] device veth1_vlan left promiscuous mode [ 58.458545][ T9] device veth0_vlan left promiscuous mode [ 58.565597][ T9] team0 (unregistering): Port device team_slave_1 removed [ 58.577785][ T9] team0 (unregistering): Port device team_slave_0 removed [ 58.589011][ T9] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 58.601543][ T9] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 58.645547][ T9] bond0 (unregistering): Released all slaves [ 58.683258][ T4294] device veth0_vlan entered promiscuous mode [ 58.689752][ T4237] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 58.697943][ T4237] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 58.712037][ T4294] device veth1_vlan entered promiscuous mode [ 58.733916][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 58.744255][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 58.753010][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 58.762621][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 58.772367][ T4294] device veth0_macvtap entered promiscuous mode [ 58.781579][ T4294] device veth1_macvtap entered promiscuous mode [ 58.798969][ T4294] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 58.814146][ T4294] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 58.821883][ T4279] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 58.829889][ T4279] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 58.841023][ T4279] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 58.849501][ T4279] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 58.858396][ T4279] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 58.867088][ T4279] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 58.880881][ T4294] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 58.889610][ T4294] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 58.898428][ T4294] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 58.907393][ T4294] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 58.959023][ T4237] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 58.969014][ T4237] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 58.984118][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 58.999011][ T154] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 59.006976][ T154] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 59.014536][ T4237] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 59.109859][ T4323] [ 59.112226][ T4323] ====================================================== [ 59.119237][ T4323] WARNING: possible circular locking dependency detected [ 59.126260][ T4323] syzkaller #0 Not tainted [ 59.130667][ T4323] ------------------------------------------------------ [ 59.137680][ T4323] syz.0.17/4323 is trying to acquire lock: [ 59.143490][ T4323] ffff88801fe48c28 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}, at: __flush_work+0xfa/0x210 [ 59.154636][ T4323] [ 59.154636][ T4323] but task is already holding lock: [ 59.162017][ T4323] ffffffff8d6c4a48 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x18b/0x560 [ 59.171684][ T4323] [ 59.171684][ T4323] which lock already depends on the new lock. [ 59.171684][ T4323] [ 59.182084][ T4323] [ 59.182084][ T4323] the existing dependency chain (in reverse order) is: [ 59.191096][ T4323] [ 59.191096][ T4323] -> #4 (rfkill_global_mutex){+.+.}-{3:3}: [ 59.199090][ T4323] __mutex_lock_common+0x1e3/0x2400 [ 59.204824][ T4323] mutex_lock_nested+0x17/0x20 [ 59.210117][ T4323] rfkill_register+0x33/0x8a0 [ 59.215328][ T4323] hci_register_dev+0x452/0x970 [ 59.220705][ T4323] vhci_create_device+0x32c/0x5c0 [ 59.226254][ T4323] vhci_write+0x391/0x450 [ 59.231100][ T4323] vfs_write+0x745/0xd60 [ 59.235862][ T4323] ksys_write+0x152/0x260 [ 59.240715][ T4323] do_syscall_64+0x4c/0xa0 [ 59.245646][ T4323] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 59.252067][ T4323] [ 59.252067][ T4323] -> #3 (&data->open_mutex){+.+.}-{3:3}: [ 59.259882][ T4323] __mutex_lock_common+0x1e3/0x2400 [ 59.265608][ T4323] mutex_lock_nested+0x17/0x20 [ 59.270898][ T4323] vhci_send_frame+0x88/0x100 [ 59.276099][ T4323] hci_send_frame+0x1a9/0x2e0 [ 59.281328][ T4323] hci_tx_work+0x9f9/0x1710 [ 59.286351][ T4323] process_one_work+0x85f/0x1010 [ 59.291807][ T4323] worker_thread+0xaa6/0x1290 [ 59.297012][ T4323] kthread+0x436/0x520 [ 59.301622][ T4323] ret_from_fork+0x1f/0x30 [ 59.306559][ T4323] [ 59.306559][ T4323] -> #2 ((work_completion)(&hdev->tx_work)){+.+.}-{0:0}: [ 59.315764][ T4323] __flush_work+0x116/0x210 [ 59.320802][ T4323] hci_dev_do_close+0x1e7/0x1030 [ 59.326261][ T4323] hci_unregister_dev+0x2d7/0x580 [ 59.331807][ T4323] vhci_release+0x73/0xc0 [ 59.336651][ T4323] __fput+0x234/0x930 [ 59.341146][ T4323] task_work_run+0x125/0x1a0 [ 59.346249][ T4323] do_exit+0x626/0x20c0 [ 59.350922][ T4323] do_group_exit+0x12e/0x300 [ 59.356025][ T4323] get_signal+0x6ca/0x12c0 [ 59.360966][ T4323] arch_do_signal_or_restart+0xe7/0x12c0 [ 59.367130][ T4323] exit_to_user_mode_loop+0x9e/0x130 [ 59.372926][ T4323] exit_to_user_mode_prepare+0xee/0x180 [ 59.378977][ T4323] syscall_exit_to_user_mode+0x16/0x40 [ 59.384949][ T4323] do_syscall_64+0x58/0xa0 [ 59.389885][ T4323] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 59.396300][ T4323] [ 59.396300][ T4323] -> #1 (&hdev->req_lock){+.+.}-{3:3}: [ 59.403941][ T4323] __mutex_lock_common+0x1e3/0x2400 [ 59.409664][ T4323] mutex_lock_nested+0x17/0x20 [ 59.414951][ T4323] bg_scan_update+0x44/0x3b0 [ 59.420064][ T4323] process_one_work+0x85f/0x1010 [ 59.425523][ T4323] worker_thread+0xaa6/0x1290 [ 59.430724][ T4323] kthread+0x436/0x520 [ 59.435310][ T4323] ret_from_fork+0x1f/0x30 [ 59.440236][ T4323] [ 59.440236][ T4323] -> #0 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}: [ 59.450039][ T4323] __lock_acquire+0x2c42/0x7d10 [ 59.455422][ T4323] lock_acquire+0x19e/0x400 [ 59.460447][ T4323] __flush_work+0x116/0x210 [ 59.465469][ T4323] __cancel_work_timer+0x3f4/0x560 [ 59.471103][ T4323] hci_request_cancel_all+0xcc/0x300 [ 59.476911][ T4323] hci_dev_do_close+0x4e/0x1030 [ 59.482279][ T4323] hci_rfkill_set_block+0x10a/0x190 [ 59.488005][ T4323] rfkill_set_block+0x1c6/0x420 [ 59.493377][ T4323] rfkill_fop_write+0x452/0x560 [ 59.498760][ T4323] vfs_write+0x30b/0xd60 [ 59.503526][ T4323] ksys_write+0x152/0x260 [ 59.508379][ T4323] do_syscall_64+0x4c/0xa0 [ 59.513327][ T4323] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 59.519744][ T4323] [ 59.519744][ T4323] other info that might help us debug this: [ 59.519744][ T4323] [ 59.529969][ T4323] Chain exists of: [ 59.529969][ T4323] (work_completion)(&hdev->bg_scan_update) --> &data->open_mutex --> rfkill_global_mutex [ 59.529969][ T4323] [ 59.545699][ T4323] Possible unsafe locking scenario: [ 59.545699][ T4323] [ 59.553151][ T4323] CPU0 CPU1 [ 59.558517][ T4323] ---- ---- [ 59.563882][ T4323] lock(rfkill_global_mutex); [ 59.568649][ T4323] lock(&data->open_mutex); [ 59.575762][ T4323] lock(rfkill_global_mutex); [ 59.583056][ T4323] lock((work_completion)(&hdev->bg_scan_update)); [ 59.589643][ T4323] [ 59.589643][ T4323] *** DEADLOCK *** [ 59.589643][ T4323] [ 59.597783][ T4323] 1 lock held by syz.0.17/4323: [ 59.602625][ T4323] #0: ffffffff8d6c4a48 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x18b/0x560 [ 59.612738][ T4323] [ 59.612738][ T4323] stack backtrace: [ 59.618644][ T4323] CPU: 0 PID: 4323 Comm: syz.0.17 Not tainted syzkaller #0 [ 59.625843][ T4323] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026 [ 59.635908][ T4323] Call Trace: [ 59.639191][ T4323] [ 59.642121][ T4323] dump_stack_lvl+0x188/0x250 [ 59.646805][ T4323] ? load_image+0x400/0x400 [ 59.651311][ T4323] ? show_regs_print_info+0x20/0x20 [ 59.656520][ T4323] ? print_circular_bug+0x12b/0x1a0 [ 59.661720][ T4323] check_noncircular+0x296/0x330 [ 59.666659][ T4323] ? look_up_lock_class+0x71/0x110 [ 59.671776][ T4323] ? add_chain_block+0x940/0x940 [ 59.676713][ T4323] ? lockdep_lock+0xf1/0x1f0 [ 59.681307][ T4323] ? __lock_acquire+0x12e8/0x7d10 [ 59.686335][ T4323] ? mark_lock+0x94/0x320 [ 59.690671][ T4323] __lock_acquire+0x2c42/0x7d10 [ 59.695538][ T4323] ? rcu_lock_release+0x5/0x20 [ 59.700304][ T4323] ? verify_lock_unused+0x140/0x140 [ 59.705509][ T4323] ? mark_lock+0x94/0x320 [ 59.709843][ T4323] lock_acquire+0x19e/0x400 [ 59.714350][ T4323] ? __flush_work+0xfa/0x210 [ 59.718953][ T4323] ? __lock_acquire+0x7d10/0x7d10 [ 59.723981][ T4323] ? read_lock_is_recursive+0x10/0x10 [ 59.729360][ T4323] ? start_flush_work+0x776/0x820 [ 59.734403][ T4323] __flush_work+0x116/0x210 [ 59.738907][ T4323] ? __flush_work+0xfa/0x210 [ 59.743504][ T4323] ? flush_work+0x20/0x20 [ 59.747834][ T4323] ? try_to_grab_pending+0xfa/0x7f0 [ 59.753036][ T4323] ? mark_lock+0x94/0x320 [ 59.757376][ T4323] ? lockdep_hardirqs_on_prepare+0x409/0x770 [ 59.763369][ T4323] ? lock_chain_count+0x20/0x20 [ 59.768227][ T4323] ? mark_lock+0x94/0x320 [ 59.772570][ T4323] ? __cancel_work_timer+0x36a/0x560 [ 59.777863][ T4323] __cancel_work_timer+0x3f4/0x560 [ 59.782982][ T4323] ? cancel_work_sync+0x20/0x20 [ 59.787843][ T4323] ? __cancel_work+0x1f9/0x2e0 [ 59.792617][ T4323] ? lockdep_hardirqs_on+0x94/0x140 [ 59.797823][ T4323] ? __cancel_work+0x27b/0x2e0 [ 59.802595][ T4323] ? cancel_work+0x20/0x20 [ 59.807013][ T4323] ? lock_chain_count+0x20/0x20 [ 59.811872][ T4323] hci_request_cancel_all+0xcc/0x300 [ 59.817168][ T4323] hci_dev_do_close+0x4e/0x1030 [ 59.822026][ T4323] ? _raw_spin_unlock_irqrestore+0xc1/0x120 [ 59.827934][ T4323] ? _raw_spin_unlock+0x40/0x40 [ 59.832797][ T4323] hci_rfkill_set_block+0x10a/0x190 [ 59.838005][ T4323] ? rcu_lock_release+0x20/0x20 [ 59.842863][ T4323] rfkill_set_block+0x1c6/0x420 [ 59.847725][ T4323] rfkill_fop_write+0x452/0x560 [ 59.852582][ T4323] ? rfkill_fop_read+0x4d0/0x4d0 [ 59.857531][ T4323] ? common_file_perm+0x150/0x1c0 [ 59.862563][ T4323] ? fsnotify_perm+0x5d/0x560 [ 59.867249][ T4323] ? security_file_permission+0x75/0xa0 [ 59.872805][ T4323] ? rfkill_fop_read+0x4d0/0x4d0 [ 59.877752][ T4323] vfs_write+0x30b/0xd60 [ 59.882010][ T4323] ? file_end_write+0x250/0x250 [ 59.886868][ T4323] ? __context_tracking_exit+0x4c/0x80 [ 59.892335][ T4323] ? __lock_acquire+0x7d10/0x7d10 [ 59.897380][ T4323] ? __fdget_pos+0x1e2/0x370 [ 59.901980][ T4323] ksys_write+0x152/0x260 [ 59.906320][ T4323] ? __ia32_sys_read+0x80/0x80 [ 59.911359][ T4323] ? lockdep_hardirqs_on+0x94/0x140 [ 59.916565][ T4323] do_syscall_64+0x4c/0xa0 [ 59.920983][ T4323] ? clear_bhb_loop+0x30/0x80 [ 59.925750][ T4323] ? clear_bhb_loop+0x30/0x80 [ 59.930436][ T4323] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 59.936348][ T4323] RIP: 0033:0x7fafc6a70629 [ 59.940773][ T4323] 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 [ 59.960514][ T4323] RSP: 002b:00007ffff4048248 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 59.968933][ T4323] RAX: ffffffffffffffda RBX: 00007fafc6ce9fa0 RCX: 00007fafc6a70629 [ 59.977013][ T4323] RDX: 0000000000000008 RSI: 0000200000000040 RDI: 0000000000000003 [ 59.984987][ T4323] RBP: 00007fafc6b06b39 R08: 0000000000000000 R09: 0000000000000000 [ 59.992965][ T4323] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 60.000941][ T4323] R13: 00007fafc6ce9fac R14: 00007fafc6ce9fa0 R15: 00007fafc6ce9fa0 [ 60.008923][ T4323] [ 60.017242][ T1107] Bluetooth: hci0: command 0x040f tx timeout