Warning: Permanently added '10.128.0.179' (ED25519) to the list of known hosts. 2026/08/21 02:05:57 parsed 1 programs 2026/08/21 02:05:57 serving rpc on tcp://45079 [ 68.041720][ T4199] cgroup: Unknown subsys name 'net' [ 68.155604][ T4199] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size = 127995904 bytes [ 69.626886][ T4199] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k FS [ 71.533000][ T1432] ieee802154 phy0 wpan0: encryption failed: -22 [ 71.539588][ T1432] ieee802154 phy1 wpan1: encryption failed: -22 [ 71.937030][ T4230] chnl_net:caif_netlink_parms(): no params data found [ 72.002028][ T4230] bridge0: port 1(bridge_slave_0) entered blocking state [ 72.009869][ T4230] bridge0: port 1(bridge_slave_0) entered disabled state [ 72.018069][ T4230] device bridge_slave_0 entered promiscuous mode [ 72.028437][ T4230] bridge0: port 2(bridge_slave_1) entered blocking state [ 72.035987][ T4230] bridge0: port 2(bridge_slave_1) entered disabled state [ 72.044435][ T4230] device bridge_slave_1 entered promiscuous mode [ 72.071756][ T4230] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 72.084720][ T4230] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 72.113534][ T4230] team0: Port device team_slave_0 added [ 72.121992][ T4230] team0: Port device team_slave_1 added [ 72.145216][ T4230] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 72.152431][ T4230] 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. [ 72.181547][ T4230] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 72.195172][ T4230] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 72.202347][ T4230] 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. [ 72.228935][ T4230] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 72.278369][ T4230] device hsr_slave_0 entered promiscuous mode [ 72.287293][ T4230] device hsr_slave_1 entered promiscuous mode [ 72.437492][ T4230] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 72.450134][ T4230] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 72.462208][ T4230] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 72.473406][ T4230] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 72.504837][ T4230] bridge0: port 2(bridge_slave_1) entered blocking state [ 72.512264][ T4230] bridge0: port 2(bridge_slave_1) entered forwarding state [ 72.520651][ T4230] bridge0: port 1(bridge_slave_0) entered blocking state [ 72.527924][ T4230] bridge0: port 1(bridge_slave_0) entered forwarding state [ 72.597213][ T4230] 8021q: adding VLAN 0 to HW filter on device bond0 [ 72.614499][ T301] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 72.625558][ T301] bridge0: port 1(bridge_slave_0) entered disabled state [ 72.634861][ T301] bridge0: port 2(bridge_slave_1) entered disabled state [ 72.643362][ T301] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 72.661118][ T4230] 8021q: adding VLAN 0 to HW filter on device team0 [ 72.674725][ T301] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 72.684374][ T301] bridge0: port 1(bridge_slave_0) entered blocking state [ 72.691510][ T301] bridge0: port 1(bridge_slave_0) entered forwarding state [ 72.711113][ T301] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 72.720892][ T301] bridge0: port 2(bridge_slave_1) entered blocking state [ 72.728216][ T301] bridge0: port 2(bridge_slave_1) entered forwarding state [ 72.751438][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 72.762849][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 72.783797][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 72.794501][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 72.804551][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 72.816971][ T4230] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 72.956086][ T301] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 72.964311][ T301] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 72.985313][ T4230] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 73.011690][ T301] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 73.021508][ T301] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 73.041496][ T301] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 73.053158][ T301] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 73.062580][ T301] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 73.070897][ T301] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 73.082155][ T4230] device veth0_vlan entered promiscuous mode [ 73.096117][ T4230] device veth1_vlan entered promiscuous mode [ 73.137683][ T4230] device veth0_macvtap entered promiscuous mode [ 73.146907][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 73.161762][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 73.171422][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 73.189663][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 73.214330][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 73.224564][ T4230] device veth1_macvtap entered promiscuous mode [ 73.241969][ T4230] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 73.249987][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 73.258101][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 73.268102][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 73.282097][ T4230] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 73.289670][ T301] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 73.298390][ T301] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 73.310872][ T4230] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 73.320617][ T4230] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 73.330441][ T4230] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 73.339817][ T4230] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 73.457716][ T4230] syz-executor (4230) used greatest stack depth: 20656 bytes left [ 73.661471][ T1313] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 73.671024][ T1313] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 73.686278][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 73.712243][ T154] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 73.720181][ T154] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 73.728280][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2026/08/21 02:06:06 executed programs: 0 [ 75.574087][ T4291] chnl_net:caif_netlink_parms(): no params data found [ 75.630819][ T4291] bridge0: port 1(bridge_slave_0) entered blocking state [ 75.637988][ T4291] bridge0: port 1(bridge_slave_0) entered disabled state [ 75.645985][ T4291] device bridge_slave_0 entered promiscuous mode [ 75.654696][ T4291] bridge0: port 2(bridge_slave_1) entered blocking state [ 75.662029][ T4291] bridge0: port 2(bridge_slave_1) entered disabled state [ 75.671324][ T4291] device bridge_slave_1 entered promiscuous mode [ 75.698239][ T4291] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 75.710446][ T4291] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 75.739869][ T144] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 75.755738][ T4291] team0: Port device team_slave_0 added [ 75.764488][ T4291] team0: Port device team_slave_1 added [ 75.779677][ T4291] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 75.786728][ 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. [ 75.813539][ T4291] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 75.826953][ T4291] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 75.834391][ 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. [ 75.861192][ T4291] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 75.889110][ T4291] device hsr_slave_0 entered promiscuous mode [ 75.896534][ T4291] device hsr_slave_1 entered promiscuous mode [ 75.903458][ T4291] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 75.911729][ T4291] Cannot create hsr debugfs directory [ 77.439844][ T4244] Bluetooth: hci0: command 0x0409 tx timeout [ 78.865125][ T144] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 78.914401][ T144] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 78.967379][ T144] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 79.524315][ T4318] Bluetooth: hci0: command 0x041b tx timeout [ 79.742153][ T4291] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 79.752141][ T4291] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 79.761590][ T4291] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 79.798165][ T4291] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 79.872255][ T4291] 8021q: adding VLAN 0 to HW filter on device bond0 [ 79.905699][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 79.915290][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 79.926537][ T4291] 8021q: adding VLAN 0 to HW filter on device team0 [ 79.955403][ T301] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 79.964747][ T301] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 79.974107][ T301] bridge0: port 1(bridge_slave_0) entered blocking state [ 79.981422][ T301] bridge0: port 1(bridge_slave_0) entered forwarding state [ 79.993416][ T301] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 80.003789][ T301] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 80.012937][ T301] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 80.022728][ T301] bridge0: port 2(bridge_slave_1) entered blocking state [ 80.029870][ T301] bridge0: port 2(bridge_slave_1) entered forwarding state [ 80.051634][ T301] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 80.064455][ T301] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 80.076209][ T301] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 80.086757][ T301] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 80.095320][ T301] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 80.125034][ T301] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 80.134152][ T301] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 80.142734][ T301] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 80.151660][ T301] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 80.187019][ T4291] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 80.198363][ T4291] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 80.206848][ T301] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 80.216013][ T301] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 80.345578][ T301] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 80.353770][ T301] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 80.365500][ T4291] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 80.409799][ T1313] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 80.418492][ T1313] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 80.427609][ T1313] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 80.436312][ T1313] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 80.447065][ T1313] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 80.454994][ T1313] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 80.463918][ T4291] device veth0_vlan entered promiscuous mode [ 80.490231][ T4291] device veth1_vlan entered promiscuous mode [ 80.510188][ T1313] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 80.518547][ T1313] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 80.527509][ T1313] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 80.536853][ T1313] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 80.547395][ T4291] device veth0_macvtap entered promiscuous mode [ 80.558131][ T4291] device veth1_macvtap entered promiscuous mode [ 80.586048][ T4291] batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3e) already exists on: batadv_slave_0 [ 80.597063][ T4291] batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems! [ 80.609875][ T4291] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 80.625844][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 80.634169][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 80.644394][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 80.653163][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 80.664384][ T4291] batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3f) already exists on: batadv_slave_1 [ 80.676839][ T4291] batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems! [ 80.687788][ T4291] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 80.697221][ T301] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 80.706280][ T301] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 80.721326][ T4291] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 80.730361][ T4291] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 80.739594][ T4291] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 80.748282][ T4291] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 80.765573][ T144] device hsr_slave_0 left promiscuous mode [ 80.772125][ T144] device hsr_slave_1 left promiscuous mode [ 80.778718][ T144] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 80.786615][ T144] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 80.795635][ T144] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 80.804440][ T144] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 80.812418][ T144] device bridge_slave_1 left promiscuous mode [ 80.819809][ T144] bridge0: port 2(bridge_slave_1) entered disabled state [ 80.834368][ T144] device bridge_slave_0 left promiscuous mode [ 80.842894][ T144] bridge0: port 1(bridge_slave_0) entered disabled state [ 80.860954][ T144] device veth1_macvtap left promiscuous mode [ 80.867712][ T144] device veth0_macvtap left promiscuous mode [ 80.874393][ T144] device veth1_vlan left promiscuous mode [ 80.881239][ T144] device veth0_vlan left promiscuous mode [ 81.038071][ T144] team0 (unregistering): Port device team_slave_1 removed [ 81.052826][ T144] team0 (unregistering): Port device team_slave_0 removed [ 81.066114][ T144] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 81.082675][ T144] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 81.138361][ T144] bond0 (unregistering): Released all slaves [ 81.288319][ T154] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 81.298533][ T154] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 81.307731][ T4348] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 81.343707][ T4348] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 81.352362][ T4348] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 81.369305][ T301] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 81.495605][ T4349] [ 81.497994][ T4349] ====================================================== [ 81.505031][ T4349] WARNING: possible circular locking dependency detected [ 81.512159][ T4349] syzkaller #0 Not tainted [ 81.516592][ T4349] ------------------------------------------------------ [ 81.523627][ T4349] syz.0.17/4349 is trying to acquire lock: [ 81.529632][ T4349] ffff888023461028 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}, at: __flush_work+0xfa/0x210 [ 81.540962][ T4349] [ 81.540962][ T4349] but task is already holding lock: [ 81.548919][ T4349] ffffffff8d6d67e8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x1ae/0x560 [ 81.559810][ T4349] [ 81.559810][ T4349] which lock already depends on the new lock. [ 81.559810][ T4349] [ 81.570342][ T4349] [ 81.570342][ T4349] the existing dependency chain (in reverse order) is: [ 81.579516][ T4349] [ 81.579516][ T4349] -> #4 (rfkill_global_mutex){+.+.}-{3:3}: [ 81.587723][ T4349] __mutex_lock_common+0x1e5/0x2400 [ 81.593488][ T4349] mutex_lock_nested+0x17/0x20 [ 81.598815][ T4349] rfkill_register+0x2f/0x970 [ 81.604042][ T4349] hci_register_dev+0x459/0x980 [ 81.609443][ T4349] vhci_create_device+0x32e/0x5c0 [ 81.615189][ T4349] vhci_write+0x389/0x440 [ 81.620069][ T4349] vfs_write+0x748/0xd70 [ 81.624859][ T4349] ksys_write+0x153/0x260 [ 81.629866][ T4349] do_syscall_64+0x4c/0xa0 [ 81.634841][ T4349] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 81.641371][ T4349] [ 81.641371][ T4349] -> #3 (&data->open_mutex){+.+.}-{3:3}: [ 81.649584][ T4349] __mutex_lock_common+0x1e5/0x2400 [ 81.655434][ T4349] mutex_lock_nested+0x17/0x20 [ 81.660759][ T4349] vhci_send_frame+0x88/0x100 [ 81.666080][ T4349] hci_send_frame+0x1a9/0x2e0 [ 81.671305][ T4349] hci_tx_work+0x9b5/0x16d0 [ 81.676447][ T4349] process_one_work+0x867/0xff0 [ 81.681892][ T4349] worker_thread+0xad7/0x12a0 [ 81.687382][ T4349] kthread+0x42e/0x520 [ 81.692083][ T4349] ret_from_fork+0x1f/0x30 [ 81.697053][ T4349] [ 81.697053][ T4349] -> #2 ((work_completion)(&hdev->tx_work)){+.+.}-{0:0}: [ 81.706479][ T4349] __flush_work+0x116/0x210 [ 81.711544][ T4349] hci_dev_do_close+0x201/0x1020 [ 81.717119][ T4349] hci_unregister_dev+0x2eb/0x590 [ 81.722699][ T4349] vhci_release+0x73/0xc0 [ 81.728178][ T4349] __fput+0x212/0x8c0 [ 81.732718][ T4349] task_work_run+0x125/0x1a0 [ 81.738010][ T4349] do_exit+0x635/0x2110 [ 81.743328][ T4349] do_group_exit+0x12c/0x2f0 [ 81.748483][ T4349] get_signal+0x7eb/0x12e0 [ 81.753528][ T4349] arch_do_signal_or_restart+0xe6/0x12a0 [ 81.759744][ T4349] exit_to_user_mode_loop+0x9e/0x130 [ 81.765585][ T4349] exit_to_user_mode_prepare+0xee/0x180 [ 81.771774][ T4349] syscall_exit_to_user_mode+0x16/0x40 [ 81.777879][ T4349] do_syscall_64+0x58/0xa0 [ 81.783556][ T4349] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 81.790089][ T4349] [ 81.790089][ T4349] -> #1 (&hdev->req_lock){+.+.}-{3:3}: [ 81.797866][ T4349] __mutex_lock_common+0x1e5/0x2400 [ 81.803625][ T4349] mutex_lock_nested+0x17/0x20 [ 81.809394][ T4349] bg_scan_update+0x44/0x3b0 [ 81.814971][ T4349] process_one_work+0x867/0xff0 [ 81.820381][ T4349] worker_thread+0xad7/0x12a0 [ 81.825618][ T4349] kthread+0x42e/0x520 [ 81.830242][ T4349] ret_from_fork+0x1f/0x30 [ 81.835333][ T4349] [ 81.835333][ T4349] -> #0 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}: [ 81.845268][ T4349] __lock_acquire+0x2c66/0x7b50 [ 81.850771][ T4349] lock_acquire+0x19e/0x400 [ 81.855943][ T4349] __flush_work+0x116/0x210 [ 81.860999][ T4349] __cancel_work_timer+0x3f4/0x560 [ 81.866660][ T4349] hci_request_cancel_all+0xcc/0x300 [ 81.872606][ T4349] hci_dev_do_close+0x4e/0x1020 [ 81.878019][ T4349] hci_rfkill_set_block+0x101/0x180 [ 81.883914][ T4349] rfkill_set_block+0x1c1/0x3c0 [ 81.889343][ T4349] rfkill_fop_write+0x453/0x560 [ 81.894770][ T4349] vfs_write+0x304/0xd70 [ 81.900018][ T4349] ksys_write+0x153/0x260 [ 81.905129][ T4349] do_syscall_64+0x4c/0xa0 [ 81.910098][ T4349] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 81.916549][ T4349] [ 81.916549][ T4349] other info that might help us debug this: [ 81.916549][ T4349] [ 81.926836][ T4349] Chain exists of: [ 81.926836][ T4349] (work_completion)(&hdev->bg_scan_update) --> &data->open_mutex --> rfkill_global_mutex [ 81.926836][ T4349] [ 81.942629][ T4349] Possible unsafe locking scenario: [ 81.942629][ T4349] [ 81.950193][ T4349] CPU0 CPU1 [ 81.955582][ T4349] ---- ---- [ 81.960973][ T4349] lock(rfkill_global_mutex); [ 81.965813][ T4349] lock(&data->open_mutex); [ 81.973033][ T4349] lock(rfkill_global_mutex); [ 81.980353][ T4349] lock((work_completion)(&hdev->bg_scan_update)); [ 81.986976][ T4349] [ 81.986976][ T4349] *** DEADLOCK *** [ 81.986976][ T4349] [ 81.995139][ T4349] 1 lock held by syz.0.17/4349: [ 82.000185][ T4349] #0: ffffffff8d6d67e8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x1ae/0x560 [ 82.010331][ T4349] [ 82.010331][ T4349] stack backtrace: [ 82.016627][ T4349] CPU: 0 PID: 4349 Comm: syz.0.17 Not tainted syzkaller #0 [ 82.024118][ T4349] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 [ 82.034556][ T4349] Call Trace: [ 82.037866][ T4349] [ 82.040943][ T4349] dump_stack_lvl+0x188/0x250 [ 82.045667][ T4349] ? load_image+0x410/0x410 [ 82.050257][ T4349] ? show_regs_print_info+0x20/0x20 [ 82.055495][ T4349] ? print_circular_bug+0x12b/0x1a0 [ 82.060728][ T4349] check_noncircular+0x296/0x330 [ 82.065698][ T4349] ? look_up_lock_class+0x71/0x110 [ 82.070855][ T4349] ? add_chain_block+0x9b0/0x9b0 [ 82.075916][ T4349] ? lockdep_lock+0xf1/0x1f0 [ 82.080814][ T4349] ? __lock_acquire+0x1305/0x7b50 [ 82.085937][ T4349] ? mark_lock+0x94/0x320 [ 82.090344][ T4349] ? _find_first_zero_bit+0xd1/0xf0 [ 82.095575][ T4349] __lock_acquire+0x2c66/0x7b50 [ 82.100644][ T4349] ? verify_lock_unused+0x140/0x140 [ 82.106403][ T4349] ? verify_lock_unused+0x140/0x140 [ 82.112010][ T4349] lock_acquire+0x19e/0x400 [ 82.116564][ T4349] ? __flush_work+0xfa/0x210 [ 82.121304][ T4349] ? __lock_acquire+0x7b50/0x7b50 [ 82.126552][ T4349] ? read_lock_is_recursive+0x10/0x10 [ 82.132001][ T4349] ? start_flush_work+0x784/0x830 [ 82.137242][ T4349] __flush_work+0x116/0x210 [ 82.141778][ T4349] ? __flush_work+0xfa/0x210 [ 82.146582][ T4349] ? flush_work+0x20/0x20 [ 82.150943][ T4349] ? try_to_grab_pending+0xfb/0x820 [ 82.156177][ T4349] ? mark_lock+0x94/0x320 [ 82.160909][ T4349] ? lockdep_hardirqs_on_prepare+0x448/0x7c0 [ 82.166934][ T4349] ? lock_chain_count+0x20/0x20 [ 82.171832][ T4349] ? mark_lock+0x94/0x320 [ 82.177343][ T4349] ? __cancel_work_timer+0x36a/0x560 [ 82.182662][ T4349] __cancel_work_timer+0x3f4/0x560 [ 82.188324][ T4349] ? cancel_work_sync+0x20/0x20 [ 82.193216][ T4349] ? __cancel_work+0x1f9/0x2e0 [ 82.198274][ T4349] ? lockdep_hardirqs_on+0x94/0x140 [ 82.203606][ T4349] ? __cancel_work+0x27b/0x2e0 [ 82.208403][ T4349] ? cancel_work+0x20/0x20 [ 82.212858][ T4349] hci_request_cancel_all+0xcc/0x300 [ 82.219117][ T4349] hci_dev_do_close+0x4e/0x1020 [ 82.224026][ T4349] ? _raw_spin_unlock_irqrestore+0xc1/0x120 [ 82.230047][ T4349] ? _raw_spin_unlock+0x40/0x40 [ 82.235041][ T4349] hci_rfkill_set_block+0x101/0x180 [ 82.240557][ T4349] ? rcu_lock_release+0x20/0x20 [ 82.245463][ T4349] rfkill_set_block+0x1c1/0x3c0 [ 82.250363][ T4349] rfkill_fop_write+0x453/0x560 [ 82.256035][ T4349] ? rfkill_fop_read+0x560/0x560 [ 82.261124][ T4349] ? common_file_perm+0xc0/0x1c0 [ 82.266104][ T4349] ? fsnotify_perm+0x5d/0x560 [ 82.270820][ T4349] ? security_file_permission+0x75/0xa0 [ 82.276398][ T4349] ? rfkill_fop_read+0x560/0x560 [ 82.281437][ T4349] vfs_write+0x304/0xd70 [ 82.285831][ T4349] ? file_end_write+0x250/0x250 [ 82.290904][ T4349] ? __context_tracking_exit+0x4c/0x80 [ 82.296402][ T4349] ? __fdget_pos+0x1e2/0x370 [ 82.301041][ T4349] ksys_write+0x153/0x260 [ 82.305567][ T4349] ? __ia32_sys_read+0x80/0x80 [ 82.310897][ T4349] ? lockdep_hardirqs_on+0x94/0x140 [ 82.316144][ T4349] do_syscall_64+0x4c/0xa0 [ 82.320814][ T4349] ? clear_bhb_loop+0x30/0x80 [ 82.325642][ T4349] ? clear_bhb_loop+0x30/0x80 [ 82.330536][ T4349] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 82.336896][ T4349] RIP: 0033:0x7fe5c40aa0d9 [ 82.341338][ T4349] 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 [ 82.363000][ T4349] RSP: 002b:00007fffd8a2e5f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 82.372880][ T4349] RAX: ffffffffffffffda RBX: 00007fe5c4331fa0 RCX: 00007fe5c40aa0d9 [ 82.381218][ T4349] RDX: 0000000000000008 RSI: 0000200000000080 RDI: 0000000000000003 [ 82.389529][ T4349] RBP: 00007fe5c4141024 R08: 0000000000000000 R09: 0000000000000000 [ 82.397713][ T4349] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 82.406261][ T4349] R13: 00007fe5c4331fac R14: 00007fe5c4331fa0 R15: 00007fe5c4331fa0 [ 82.414583][ T4349] [ 82.427508][ T4306] Bluetooth: hci0: command 0x040f tx timeout