Warning: Permanently added '10.128.1.7' (ED25519) to the list of known hosts. 2026/06/06 14:43:59 parsed 1 programs [ 65.414132][ T4198] cgroup: Unknown subsys name 'net' [ 65.559104][ T4198] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size = 127995904 bytes [ 67.023488][ T4198] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k FS [ 68.388764][ T151] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 68.399604][ T151] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 68.409680][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 68.427459][ T9] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 68.435358][ T9] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 68.443279][ T151] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 69.075311][ T4229] chnl_net:caif_netlink_parms(): no params data found [ 69.133216][ T4229] bridge0: port 1(bridge_slave_0) entered blocking state [ 69.140955][ T4229] bridge0: port 1(bridge_slave_0) entered disabled state [ 69.148894][ T4229] device bridge_slave_0 entered promiscuous mode [ 69.157538][ T4229] bridge0: port 2(bridge_slave_1) entered blocking state [ 69.164759][ T4229] bridge0: port 2(bridge_slave_1) entered disabled state [ 69.172444][ T4229] device bridge_slave_1 entered promiscuous mode [ 69.206544][ T4229] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 69.225659][ T4229] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 69.246258][ T4229] team0: Port device team_slave_0 added [ 69.253280][ T4229] team0: Port device team_slave_1 added [ 69.269975][ T4229] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 69.276951][ T4229] 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. [ 69.303000][ T4229] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 69.315310][ T4229] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 69.322270][ T4229] 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. [ 69.348185][ T4229] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 69.378788][ T4229] device hsr_slave_0 entered promiscuous mode [ 69.385628][ T4229] device hsr_slave_1 entered promiscuous mode [ 69.505843][ T4229] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 69.517930][ T4229] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 69.528635][ T4229] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 69.538732][ T4229] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 69.618646][ T4229] 8021q: adding VLAN 0 to HW filter on device bond0 [ 69.635903][ T156] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 69.645438][ T156] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 69.657119][ T4229] 8021q: adding VLAN 0 to HW filter on device team0 [ 69.667885][ T156] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 69.677101][ T156] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 69.688497][ T156] bridge0: port 1(bridge_slave_0) entered blocking state [ 69.695816][ T156] bridge0: port 1(bridge_slave_0) entered forwarding state [ 69.706728][ T156] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 69.725842][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 69.735138][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 69.746358][ T9] bridge0: port 2(bridge_slave_1) entered blocking state [ 69.753474][ T9] bridge0: port 2(bridge_slave_1) entered forwarding state [ 69.761559][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 69.784834][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 69.795499][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 69.805281][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 69.815602][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 69.825194][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 69.834615][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 69.843090][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 69.856938][ T4229] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 69.869831][ T4229] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 69.881160][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 69.890595][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 69.899401][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 70.030057][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 70.039648][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 70.057266][ T4229] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 70.080726][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 70.092109][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 70.115899][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 70.126260][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 70.134730][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 70.145398][ T4229] device veth0_vlan entered promiscuous mode [ 70.161591][ T4229] device veth1_vlan entered promiscuous mode [ 70.198147][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 70.206616][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 70.215903][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 70.228297][ T4229] device veth0_macvtap entered promiscuous mode [ 70.239477][ T4229] device veth1_macvtap entered promiscuous mode [ 70.260437][ T4229] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 70.270572][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 70.280612][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 70.290449][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 70.303233][ T4229] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 70.312854][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 70.322070][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 70.334689][ T4229] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 70.344111][ T4229] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 70.352822][ T4229] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 70.363070][ T4229] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 70.478005][ T4229] syz-executor (4229) used greatest stack depth: 20152 bytes left [ 70.903043][ T151] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 71.287209][ T1421] ieee802154 phy0 wpan0: encryption failed: -22 [ 71.293987][ T1421] ieee802154 phy1 wpan1: encryption failed: -22 2026/06/06 14:44:07 executed programs: 0 [ 72.351691][ T4291] chnl_net:caif_netlink_parms(): no params data found [ 72.389939][ T4291] bridge0: port 1(bridge_slave_0) entered blocking state [ 72.397210][ T4291] bridge0: port 1(bridge_slave_0) entered disabled state [ 72.405746][ T4291] device bridge_slave_0 entered promiscuous mode [ 72.413699][ T4291] bridge0: port 2(bridge_slave_1) entered blocking state [ 72.420839][ T4291] bridge0: port 2(bridge_slave_1) entered disabled state [ 72.428968][ T4291] device bridge_slave_1 entered promiscuous mode [ 72.447779][ T4291] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 72.459047][ T4291] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 72.479742][ T4291] team0: Port device team_slave_0 added [ 72.487835][ T4291] team0: Port device team_slave_1 added [ 72.507719][ T4291] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 72.514841][ T4291] 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. [ 72.541034][ T4291] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 72.552894][ T4291] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 72.559986][ T4291] 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. [ 72.585996][ T4291] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 72.613957][ T4291] device hsr_slave_0 entered promiscuous mode [ 72.620993][ T4291] device hsr_slave_1 entered promiscuous mode [ 72.627928][ T4291] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 72.635955][ T4291] Cannot create hsr debugfs directory [ 73.660776][ T151] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 74.334327][ T1108] Bluetooth: hci0: command 0x0409 tx timeout [ 76.099236][ T151] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 76.160330][ T151] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 76.413877][ T4237] Bluetooth: hci0: command 0x041b tx timeout [ 77.056271][ T4291] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 77.069465][ T4291] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 77.079861][ T4291] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 77.098777][ T4291] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 77.159977][ T4291] 8021q: adding VLAN 0 to HW filter on device bond0 [ 77.172025][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 77.180882][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 77.207635][ T4291] 8021q: adding VLAN 0 to HW filter on device team0 [ 77.217933][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 77.226976][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 77.235811][ T9] bridge0: port 1(bridge_slave_0) entered blocking state [ 77.242868][ T9] bridge0: port 1(bridge_slave_0) entered forwarding state [ 77.251459][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 77.265405][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 77.274335][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 77.282624][ T144] bridge0: port 2(bridge_slave_1) entered blocking state [ 77.289789][ T144] bridge0: port 2(bridge_slave_1) entered forwarding state [ 77.314513][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 77.327304][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 77.338074][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 77.351341][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 77.360300][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 77.391277][ T4291] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 77.402678][ T4291] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 77.415805][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 77.424836][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 77.433186][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 77.441871][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 77.450928][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 77.459915][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 77.471697][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 77.534365][ T151] device hsr_slave_0 left promiscuous mode [ 77.541174][ T151] device hsr_slave_1 left promiscuous mode [ 77.551511][ T151] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 77.559908][ T151] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 77.570302][ T151] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 77.578649][ T151] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 77.586361][ T151] device bridge_slave_1 left promiscuous mode [ 77.593163][ T151] bridge0: port 2(bridge_slave_1) entered disabled state [ 77.608307][ T151] device bridge_slave_0 left promiscuous mode [ 77.614668][ T151] bridge0: port 1(bridge_slave_0) entered disabled state [ 77.631457][ T151] device veth1_macvtap left promiscuous mode [ 77.638260][ T151] device veth0_macvtap left promiscuous mode [ 77.644404][ T151] device veth1_vlan left promiscuous mode [ 77.650276][ T151] device veth0_vlan left promiscuous mode [ 77.792789][ T151] team0 (unregistering): Port device team_slave_1 removed [ 77.806732][ T151] team0 (unregistering): Port device team_slave_0 removed [ 77.821675][ T151] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 77.839037][ T151] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 77.889822][ T151] bond0 (unregistering): Released all slaves [ 77.978052][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 77.986200][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 77.999166][ T4291] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 78.021402][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 78.030939][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 78.051857][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 78.060495][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 78.068970][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 78.077699][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 78.087930][ T4291] device veth0_vlan entered promiscuous mode [ 78.102076][ T4291] device veth1_vlan entered promiscuous mode [ 78.127186][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 78.136071][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 78.144416][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 78.152732][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 78.167315][ T4291] device veth0_macvtap entered promiscuous mode [ 78.175992][ T4238] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 78.193639][ T4291] device veth1_macvtap entered promiscuous mode [ 78.209904][ T4291] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 78.217966][ T4238] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 78.226969][ T4238] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 78.238994][ T4291] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 78.248734][ T4238] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 78.257463][ T4238] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 78.268729][ T4291] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 78.278016][ T4291] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 78.287061][ T4291] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 78.296027][ T4291] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 78.362548][ T144] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 78.376471][ T144] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 78.386179][ T4238] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 78.420532][ T4238] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 78.430934][ T4238] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 78.440257][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 78.484881][ T23] Bluetooth: hci0: command 0x040f tx timeout [ 78.564907][ T4355] [ 78.567288][ T4355] ====================================================== [ 78.574322][ T4355] WARNING: possible circular locking dependency detected [ 78.581357][ T4355] syzkaller #0 Not tainted [ 78.585787][ T4355] ------------------------------------------------------ [ 78.592827][ T4355] syz.0.17/4355 is trying to acquire lock: [ 78.598653][ T4355] ffff8880242d1028 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}, at: __flush_work+0xfa/0x210 [ 78.609730][ T4355] [ 78.609730][ T4355] but task is already holding lock: [ 78.617107][ T4355] ffffffff8d6c73e8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x18b/0x560 [ 78.626794][ T4355] [ 78.626794][ T4355] which lock already depends on the new lock. [ 78.626794][ T4355] [ 78.637205][ T4355] [ 78.637205][ T4355] the existing dependency chain (in reverse order) is: [ 78.646237][ T4355] [ 78.646237][ T4355] -> #4 (rfkill_global_mutex){+.+.}-{3:3}: [ 78.654256][ T4355] __mutex_lock_common+0x1e3/0x2400 [ 78.660003][ T4355] mutex_lock_nested+0x17/0x20 [ 78.665314][ T4355] rfkill_register+0x33/0x980 [ 78.670536][ T4355] hci_register_dev+0x452/0x970 [ 78.675930][ T4355] vhci_create_device+0x32c/0x5c0 [ 78.681501][ T4355] vhci_write+0x391/0x450 [ 78.686369][ T4355] vfs_write+0x745/0xd60 [ 78.691152][ T4355] ksys_write+0x152/0x260 [ 78.696017][ T4355] do_syscall_64+0x4c/0xa0 [ 78.700970][ T4355] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 78.707404][ T4355] [ 78.707404][ T4355] -> #3 (&data->open_mutex){+.+.}-{3:3}: [ 78.715856][ T4355] __mutex_lock_common+0x1e3/0x2400 [ 78.721603][ T4355] mutex_lock_nested+0x17/0x20 [ 78.726914][ T4355] vhci_send_frame+0x88/0x100 [ 78.732146][ T4355] hci_send_frame+0x1a9/0x2e0 [ 78.737456][ T4355] hci_tx_work+0x9f9/0x1710 [ 78.742496][ T4355] process_one_work+0x85f/0x1010 [ 78.747971][ T4355] worker_thread+0xaa6/0x1290 [ 78.753190][ T4355] kthread+0x436/0x520 [ 78.757809][ T4355] ret_from_fork+0x1f/0x30 [ 78.762774][ T4355] [ 78.762774][ T4355] -> #2 ((work_completion)(&hdev->tx_work)){+.+.}-{0:0}: [ 78.772006][ T4355] __flush_work+0x116/0x210 [ 78.777056][ T4355] hci_dev_do_close+0x1e7/0x1030 [ 78.782537][ T4355] hci_unregister_dev+0x2eb/0x590 [ 78.788103][ T4355] vhci_release+0x73/0xc0 [ 78.792987][ T4355] __fput+0x234/0x930 [ 78.797511][ T4355] task_work_run+0x125/0x1a0 [ 78.802642][ T4355] do_exit+0x626/0x20c0 [ 78.807330][ T4355] do_group_exit+0x12e/0x300 [ 78.812454][ T4355] get_signal+0x6d6/0x12d0 [ 78.817405][ T4355] arch_do_signal_or_restart+0xe7/0x12c0 [ 78.823579][ T4355] exit_to_user_mode_loop+0x9e/0x130 [ 78.829405][ T4355] exit_to_user_mode_prepare+0xee/0x180 [ 78.835484][ T4355] irqentry_exit_to_user_mode+0x5/0x30 [ 78.841481][ T4355] exc_page_fault+0x88/0x100 [ 78.846613][ T4355] asm_exc_page_fault+0x22/0x30 [ 78.852002][ T4355] [ 78.852002][ T4355] -> #1 (&hdev->req_lock){+.+.}-{3:3}: [ 78.859668][ T4355] __mutex_lock_common+0x1e3/0x2400 [ 78.865409][ T4355] mutex_lock_nested+0x17/0x20 [ 78.870711][ T4355] bg_scan_update+0x44/0x3b0 [ 78.875857][ T4355] process_one_work+0x85f/0x1010 [ 78.881333][ T4355] worker_thread+0xaa6/0x1290 [ 78.886554][ T4355] kthread+0x436/0x520 [ 78.891164][ T4355] ret_from_fork+0x1f/0x30 [ 78.896121][ T4355] [ 78.896121][ T4355] -> #0 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}: [ 78.905970][ T4355] __lock_acquire+0x2c42/0x7d10 [ 78.911367][ T4355] lock_acquire+0x19e/0x400 [ 78.916409][ T4355] __flush_work+0x116/0x210 [ 78.921450][ T4355] __cancel_work_timer+0x3f4/0x560 [ 78.927098][ T4355] hci_request_cancel_all+0xcc/0x300 [ 78.932927][ T4355] hci_dev_do_close+0x4e/0x1030 [ 78.938335][ T4355] hci_rfkill_set_block+0x10a/0x190 [ 78.944079][ T4355] rfkill_set_block+0x1c9/0x3d0 [ 78.949481][ T4355] rfkill_fop_write+0x452/0x560 [ 78.954875][ T4355] vfs_write+0x30b/0xd60 [ 78.959658][ T4355] ksys_write+0x152/0x260 [ 78.964525][ T4355] do_syscall_64+0x4c/0xa0 [ 78.969476][ T4355] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 78.975910][ T4355] [ 78.975910][ T4355] other info that might help us debug this: [ 78.975910][ T4355] [ 78.986156][ T4355] Chain exists of: [ 78.986156][ T4355] (work_completion)(&hdev->bg_scan_update) --> &data->open_mutex --> rfkill_global_mutex [ 78.986156][ T4355] [ 79.001905][ T4355] Possible unsafe locking scenario: [ 79.001905][ T4355] [ 79.009373][ T4355] CPU0 CPU1 [ 79.014751][ T4355] ---- ---- [ 79.020134][ T4355] lock(rfkill_global_mutex); [ 79.024917][ T4355] lock(&data->open_mutex); [ 79.032055][ T4355] lock(rfkill_global_mutex); [ 79.039356][ T4355] lock((work_completion)(&hdev->bg_scan_update)); [ 79.045967][ T4355] [ 79.045967][ T4355] *** DEADLOCK *** [ 79.045967][ T4355] [ 79.054123][ T4355] 1 lock held by syz.0.17/4355: [ 79.058990][ T4355] #0: ffffffff8d6c73e8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x18b/0x560 [ 79.069119][ T4355] [ 79.069119][ T4355] stack backtrace: [ 79.075022][ T4355] CPU: 1 PID: 4355 Comm: syz.0.17 Not tainted syzkaller #0 [ 79.082231][ T4355] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 [ 79.092392][ T4355] Call Trace: [ 79.095695][ T4355] [ 79.098644][ T4355] dump_stack_lvl+0x188/0x250 [ 79.103345][ T4355] ? load_image+0x400/0x400 [ 79.107867][ T4355] ? show_regs_print_info+0x20/0x20 [ 79.113086][ T4355] ? print_circular_bug+0x12b/0x1a0 [ 79.118303][ T4355] check_noncircular+0x296/0x330 [ 79.123249][ T4355] ? look_up_lock_class+0x71/0x110 [ 79.128373][ T4355] ? add_chain_block+0x940/0x940 [ 79.133328][ T4355] ? lockdep_lock+0xf1/0x1f0 [ 79.137957][ T4355] ? __lock_acquire+0x12e8/0x7d10 [ 79.143006][ T4355] ? mark_lock+0x94/0x320 [ 79.147526][ T4355] __lock_acquire+0x2c42/0x7d10 [ 79.152408][ T4355] ? verify_lock_unused+0x140/0x140 [ 79.157633][ T4355] ? verify_lock_unused+0x140/0x140 [ 79.162854][ T4355] ? mark_lock+0x94/0x320 [ 79.167204][ T4355] lock_acquire+0x19e/0x400 [ 79.171718][ T4355] ? __flush_work+0xfa/0x210 [ 79.176319][ T4355] ? __lock_acquire+0x7d10/0x7d10 [ 79.181359][ T4355] ? read_lock_is_recursive+0x10/0x10 [ 79.186743][ T4355] ? start_flush_work+0x776/0x820 [ 79.191780][ T4355] __flush_work+0x116/0x210 [ 79.196288][ T4355] ? __flush_work+0xfa/0x210 [ 79.200883][ T4355] ? flush_work+0x20/0x20 [ 79.205219][ T4355] ? try_to_grab_pending+0xfa/0x7f0 [ 79.210437][ T4355] ? mark_lock+0x94/0x320 [ 79.214789][ T4355] ? lockdep_hardirqs_on_prepare+0x409/0x770 [ 79.220787][ T4355] ? lock_chain_count+0x20/0x20 [ 79.225648][ T4355] ? mark_lock+0x94/0x320 [ 79.229997][ T4355] ? __cancel_work_timer+0x36a/0x560 [ 79.235289][ T4355] __cancel_work_timer+0x3f4/0x560 [ 79.240407][ T4355] ? cancel_work_sync+0x20/0x20 [ 79.245265][ T4355] ? __cancel_work+0x1f9/0x2e0 [ 79.250038][ T4355] ? lockdep_hardirqs_on+0x94/0x140 [ 79.255245][ T4355] ? __cancel_work+0x27b/0x2e0 [ 79.260016][ T4355] ? cancel_work+0x20/0x20 [ 79.264440][ T4355] ? lock_chain_count+0x20/0x20 [ 79.269306][ T4355] hci_request_cancel_all+0xcc/0x300 [ 79.274617][ T4355] hci_dev_do_close+0x4e/0x1030 [ 79.279483][ T4355] ? _raw_spin_unlock_irqrestore+0xc1/0x120 [ 79.285391][ T4355] ? _raw_spin_unlock+0x40/0x40 [ 79.290264][ T4355] hci_rfkill_set_block+0x10a/0x190 [ 79.295483][ T4355] ? rcu_lock_release+0x20/0x20 [ 79.300355][ T4355] rfkill_set_block+0x1c9/0x3d0 [ 79.305223][ T4355] rfkill_fop_write+0x452/0x560 [ 79.310093][ T4355] ? rfkill_fop_read+0x520/0x520 [ 79.315044][ T4355] ? common_file_perm+0xb0/0x1c0 [ 79.320004][ T4355] ? fsnotify_perm+0x5d/0x560 [ 79.324698][ T4355] ? security_file_permission+0x75/0xa0 [ 79.330260][ T4355] ? rfkill_fop_read+0x520/0x520 [ 79.335209][ T4355] vfs_write+0x30b/0xd60 [ 79.339483][ T4355] ? file_end_write+0x250/0x250 [ 79.344356][ T4355] ? __context_tracking_exit+0x4c/0x80 [ 79.349832][ T4355] ? __lock_acquire+0x7d10/0x7d10 [ 79.354966][ T4355] ? __fdget_pos+0x1e2/0x370 [ 79.359577][ T4355] ksys_write+0x152/0x260 [ 79.363935][ T4355] ? __ia32_sys_read+0x80/0x80 [ 79.368727][ T4355] ? lockdep_hardirqs_on+0x94/0x140 [ 79.373948][ T4355] do_syscall_64+0x4c/0xa0 [ 79.378379][ T4355] ? clear_bhb_loop+0x30/0x80 [ 79.383060][ T4355] ? clear_bhb_loop+0x30/0x80 [ 79.387733][ T4355] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 79.393633][ T4355] RIP: 0033:0x7fa9e0494e59 [ 79.398146][ T4355] 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 [ 79.417749][ T4355] RSP: 002b:00007fff8f374da8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 79.426161][ T4355] RAX: ffffffffffffffda RBX: 00007fa9e070dfa0 RCX: 00007fa9e0494e59 [ 79.434128][ T4355] RDX: 0000000000000008 RSI: 0000200000000080 RDI: 0000000000000003 [ 79.442097][ T4355] RBP: 00007fa9e052ad6f R08: 0000000000000000 R09: 0000000000000000 [ 79.450060][ T4355] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 79.458038][ T4355] R13: 00007fa9e070dfac R14: 00007fa9e070dfa0 R15: 00007fa9e070dfa0 [ 79.466014][ T4355]