Warning: Permanently added '10.128.0.17' (ED25519) to the list of known hosts. 2026/04/06 14:56:40 parsed 1 programs [ 64.027882][ T4189] cgroup: Unknown subsys name 'net' [ 64.142569][ T4189] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size = 127995904 bytes [ 65.623991][ T4189] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k FS [ 67.283781][ T4207] chnl_net:caif_netlink_parms(): no params data found [ 67.327688][ T4207] bridge0: port 1(bridge_slave_0) entered blocking state [ 67.335529][ T4207] bridge0: port 1(bridge_slave_0) entered disabled state [ 67.343457][ T4207] device bridge_slave_0 entered promiscuous mode [ 67.352262][ T4207] bridge0: port 2(bridge_slave_1) entered blocking state [ 67.359717][ T4207] bridge0: port 2(bridge_slave_1) entered disabled state [ 67.367847][ T4207] device bridge_slave_1 entered promiscuous mode [ 67.390149][ T4207] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 67.401403][ T4207] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 67.422441][ T4207] team0: Port device team_slave_0 added [ 67.432322][ T4207] team0: Port device team_slave_1 added [ 67.448194][ T4207] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 67.455266][ T4207] 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. [ 67.481765][ T4207] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 67.497385][ T4207] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 67.504486][ T4207] 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. [ 67.530877][ T4207] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 67.560936][ T4207] device hsr_slave_0 entered promiscuous mode [ 67.567833][ T4207] device hsr_slave_1 entered promiscuous mode [ 67.657556][ T4207] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 67.668437][ T4207] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 67.681206][ T4207] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 67.689948][ T4207] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 67.710482][ T4207] bridge0: port 2(bridge_slave_1) entered blocking state [ 67.717670][ T4207] bridge0: port 2(bridge_slave_1) entered forwarding state [ 67.725610][ T4207] bridge0: port 1(bridge_slave_0) entered blocking state [ 67.732721][ T4207] bridge0: port 1(bridge_slave_0) entered forwarding state [ 67.792373][ T4207] 8021q: adding VLAN 0 to HW filter on device bond0 [ 67.810727][ T1245] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 67.827224][ T1245] bridge0: port 1(bridge_slave_0) entered disabled state [ 67.842302][ T1245] bridge0: port 2(bridge_slave_1) entered disabled state [ 67.860117][ T4207] 8021q: adding VLAN 0 to HW filter on device team0 [ 67.873316][ T1245] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 67.882905][ T1245] bridge0: port 1(bridge_slave_0) entered blocking state [ 67.890054][ T1245] bridge0: port 1(bridge_slave_0) entered forwarding state [ 67.906133][ T1245] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 67.915366][ T1245] bridge0: port 2(bridge_slave_1) entered blocking state [ 67.922563][ T1245] bridge0: port 2(bridge_slave_1) entered forwarding state [ 67.947869][ T1245] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 67.959070][ T1245] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 67.968251][ T1245] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 67.987128][ T1245] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 68.002921][ T4207] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 68.015718][ T4207] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 68.024231][ T1245] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 68.163146][ T1245] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 68.172973][ T1245] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 68.189374][ T4207] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 68.214720][ T1245] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 68.238113][ T1245] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 68.249402][ T1245] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 68.259119][ T1245] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 68.267175][ T1245] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 68.287703][ T4207] device veth0_vlan entered promiscuous mode [ 68.302355][ T4207] device veth1_vlan entered promiscuous mode [ 68.330521][ T1245] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 68.339472][ T1245] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 68.348511][ T1245] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 68.358537][ T1245] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 68.370171][ T4207] device veth0_macvtap entered promiscuous mode [ 68.382054][ T4207] device veth1_macvtap entered promiscuous mode [ 68.401972][ T4207] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 68.411100][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 68.419711][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 68.428339][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 68.437299][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 68.450156][ T4207] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 68.458739][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 68.477294][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 68.489612][ T4207] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 68.499210][ T4207] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 68.508624][ T4207] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 68.518303][ T4207] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 69.407828][ T822] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 71.386848][ T1421] ieee802154 phy0 wpan0: encryption failed: -22 [ 71.393435][ T1421] ieee802154 phy1 wpan1: encryption failed: -22 [ 71.689414][ T822] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 73.248325][ T822] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 73.300661][ T822] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 73.982810][ T9] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 73.992512][ T9] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 74.016928][ T1245] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 74.047956][ T1245] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 74.058500][ T1245] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 74.066895][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 74.478562][ T822] device hsr_slave_0 left promiscuous mode [ 74.488216][ T822] device hsr_slave_1 left promiscuous mode [ 74.496969][ T822] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 74.508129][ T822] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 74.517049][ T822] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 74.526515][ T822] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 74.535944][ T822] device bridge_slave_1 left promiscuous mode [ 74.543537][ T822] bridge0: port 2(bridge_slave_1) entered disabled state [ 74.562012][ T822] device bridge_slave_0 left promiscuous mode [ 74.568828][ T822] bridge0: port 1(bridge_slave_0) entered disabled state [ 74.592675][ T822] device veth1_macvtap left promiscuous mode [ 74.609159][ T822] device veth0_macvtap left promiscuous mode [ 74.616027][ T822] device veth1_vlan left promiscuous mode [ 74.622032][ T822] device veth0_vlan left promiscuous mode [ 74.763761][ T822] team0 (unregistering): Port device team_slave_1 removed [ 74.776892][ T822] team0 (unregistering): Port device team_slave_0 removed [ 74.788734][ T822] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 74.803770][ T822] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 74.855851][ T822] bond0 (unregistering): Released all slaves 2026/04/06 14:56:54 executed programs: 0 [ 76.086127][ T4337] chnl_net:caif_netlink_parms(): no params data found [ 76.206516][ T4337] bridge0: port 1(bridge_slave_0) entered blocking state [ 76.216604][ T4337] bridge0: port 1(bridge_slave_0) entered disabled state [ 76.225119][ T4337] device bridge_slave_0 entered promiscuous mode [ 76.258570][ T4337] bridge0: port 2(bridge_slave_1) entered blocking state [ 76.268701][ T4337] bridge0: port 2(bridge_slave_1) entered disabled state [ 76.277408][ T4337] device bridge_slave_1 entered promiscuous mode [ 76.326677][ T4337] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 76.367904][ T4337] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 76.416711][ T4337] team0: Port device team_slave_0 added [ 76.425748][ T4337] team0: Port device team_slave_1 added [ 76.451377][ T4337] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 76.459811][ T4337] 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. [ 76.489034][ T4337] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 76.502477][ T4337] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 76.511197][ T4337] 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. [ 76.540004][ T4337] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 76.609943][ T4337] device hsr_slave_0 entered promiscuous mode [ 76.624056][ T4337] device hsr_slave_1 entered promiscuous mode [ 77.358687][ T4337] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 77.373295][ T4337] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 77.383403][ T4337] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 77.392838][ T4337] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 77.473031][ T4337] 8021q: adding VLAN 0 to HW filter on device bond0 [ 77.520121][ T1245] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 77.528719][ T1245] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 77.547733][ T4337] 8021q: adding VLAN 0 to HW filter on device team0 [ 77.562630][ T1245] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 77.572606][ T1245] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 77.595933][ T1245] bridge0: port 1(bridge_slave_0) entered blocking state [ 77.603169][ T1245] bridge0: port 1(bridge_slave_0) entered forwarding state [ 77.625785][ T1245] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 77.642531][ T1245] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 77.658735][ T1245] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 77.675174][ T1245] bridge0: port 2(bridge_slave_1) entered blocking state [ 77.682627][ T1245] bridge0: port 2(bridge_slave_1) entered forwarding state [ 77.711996][ T1245] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 77.724386][ T1245] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 77.733325][ T1245] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 77.742902][ T1245] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 77.764353][ T1245] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 77.777046][ T1245] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 77.793668][ T1245] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 77.813143][ T1245] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 77.838834][ T1245] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 77.860145][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 77.877661][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 77.901298][ T4337] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 77.944674][ T4325] Bluetooth: hci0: command 0x0409 tx timeout [ 78.047313][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 78.055079][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 78.069101][ T4337] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 78.091507][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 78.101187][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 78.123018][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 78.133091][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 78.144521][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 78.155523][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 78.163526][ T4337] device veth0_vlan entered promiscuous mode [ 78.179161][ T4337] device veth1_vlan entered promiscuous mode [ 78.203768][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 78.214549][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 78.222779][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 78.234535][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 78.245509][ T4337] device veth0_macvtap entered promiscuous mode [ 78.258259][ T4337] device veth1_macvtap entered promiscuous mode [ 78.279804][ T4337] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 78.288392][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 78.300039][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 78.308314][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 78.317075][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 78.330265][ T4337] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 78.338514][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 78.349826][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 78.394167][ T4337] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 78.403103][ T4337] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 78.412370][ T4337] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 78.421567][ T4337] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 78.521109][ T154] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 78.530302][ T154] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 78.544149][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 78.611606][ T154] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 78.621947][ T154] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 78.667876][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 78.804472][ T4442] [ 78.806855][ T4442] ====================================================== [ 78.813898][ T4442] WARNING: possible circular locking dependency detected [ 78.821018][ T4442] syzkaller #0 Not tainted [ 78.825456][ T4442] ------------------------------------------------------ [ 78.832484][ T4442] syz.0.17/4442 is trying to acquire lock: [ 78.838316][ T4442] ffff88807dc0cc28 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}, at: __flush_work+0xfa/0x210 [ 78.849404][ T4442] [ 78.849404][ T4442] but task is already holding lock: [ 78.856792][ T4442] ffffffff8d6c51a8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x18b/0x560 [ 78.866491][ T4442] [ 78.866491][ T4442] which lock already depends on the new lock. [ 78.866491][ T4442] [ 78.876912][ T4442] [ 78.876912][ T4442] the existing dependency chain (in reverse order) is: [ 78.885947][ T4442] [ 78.885947][ T4442] -> #4 (rfkill_global_mutex){+.+.}-{3:3}: [ 78.894061][ T4442] __mutex_lock_common+0x1e3/0x2400 [ 78.899823][ T4442] mutex_lock_nested+0x17/0x20 [ 78.905155][ T4442] rfkill_register+0x33/0x8a0 [ 78.910590][ T4442] hci_register_dev+0x452/0x970 [ 78.916084][ T4442] vhci_create_device+0x32c/0x5c0 [ 78.921661][ T4442] vhci_write+0x391/0x450 [ 78.926995][ T4442] vfs_write+0x745/0xd60 [ 78.931790][ T4442] ksys_write+0x152/0x260 [ 78.936673][ T4442] do_syscall_64+0x4c/0xa0 [ 78.941634][ T4442] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 78.948110][ T4442] [ 78.948110][ T4442] -> #3 (&data->open_mutex){+.+.}-{3:3}: [ 78.956139][ T4442] __mutex_lock_common+0x1e3/0x2400 [ 78.961896][ T4442] mutex_lock_nested+0x17/0x20 [ 78.967408][ T4442] vhci_send_frame+0x88/0x100 [ 78.972642][ T4442] hci_send_frame+0x1a9/0x2e0 [ 78.977978][ T4442] hci_tx_work+0x9f9/0x1710 [ 78.983030][ T4442] process_one_work+0x85f/0x1010 [ 78.988519][ T4442] worker_thread+0xaa6/0x1290 [ 78.993855][ T4442] kthread+0x436/0x520 [ 78.998660][ T4442] ret_from_fork+0x1f/0x30 [ 79.003722][ T4442] [ 79.003722][ T4442] -> #2 ((work_completion)(&hdev->tx_work)){+.+.}-{0:0}: [ 79.012965][ T4442] __flush_work+0x116/0x210 [ 79.018022][ T4442] hci_dev_do_close+0x1e7/0x1030 [ 79.023514][ T4442] hci_unregister_dev+0x2d7/0x580 [ 79.029090][ T4442] vhci_release+0x73/0xc0 [ 79.033967][ T4442] __fput+0x234/0x930 [ 79.038499][ T4442] task_work_run+0x125/0x1a0 [ 79.043640][ T4442] do_exit+0x626/0x20c0 [ 79.048348][ T4442] do_group_exit+0x12e/0x300 [ 79.053482][ T4442] get_signal+0x6ca/0x12c0 [ 79.058524][ T4442] arch_do_signal_or_restart+0xe7/0x12c0 [ 79.064963][ T4442] exit_to_user_mode_loop+0x9e/0x130 [ 79.070900][ T4442] exit_to_user_mode_prepare+0xee/0x180 [ 79.077084][ T4442] syscall_exit_to_user_mode+0x16/0x40 [ 79.083102][ T4442] do_syscall_64+0x58/0xa0 [ 79.088152][ T4442] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 79.094594][ T4442] [ 79.094594][ T4442] -> #1 (&hdev->req_lock){+.+.}-{3:3}: [ 79.102288][ T4442] __mutex_lock_common+0x1e3/0x2400 [ 79.108117][ T4442] mutex_lock_nested+0x17/0x20 [ 79.113518][ T4442] bg_scan_update+0x44/0x3b0 [ 79.118680][ T4442] process_one_work+0x85f/0x1010 [ 79.124169][ T4442] worker_thread+0xaa6/0x1290 [ 79.129394][ T4442] kthread+0x436/0x520 [ 79.133974][ T4442] ret_from_fork+0x1f/0x30 [ 79.138903][ T4442] [ 79.138903][ T4442] -> #0 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}: [ 79.148704][ T4442] __lock_acquire+0x2c42/0x7d10 [ 79.154089][ T4442] lock_acquire+0x19e/0x400 [ 79.159148][ T4442] __flush_work+0x116/0x210 [ 79.164199][ T4442] __cancel_work_timer+0x3f4/0x560 [ 79.169844][ T4442] hci_request_cancel_all+0xcc/0x300 [ 79.175658][ T4442] hci_dev_do_close+0x4e/0x1030 [ 79.181022][ T4442] hci_rfkill_set_block+0x10a/0x190 [ 79.186732][ T4442] rfkill_set_block+0x1c6/0x420 [ 79.192304][ T4442] rfkill_fop_write+0x452/0x560 [ 79.197756][ T4442] vfs_write+0x30b/0xd60 [ 79.202671][ T4442] ksys_write+0x152/0x260 [ 79.207518][ T4442] do_syscall_64+0x4c/0xa0 [ 79.212566][ T4442] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 79.218998][ T4442] [ 79.218998][ T4442] other info that might help us debug this: [ 79.218998][ T4442] [ 79.229503][ T4442] Chain exists of: [ 79.229503][ T4442] (work_completion)(&hdev->bg_scan_update) --> &data->open_mutex --> rfkill_global_mutex [ 79.229503][ T4442] [ 79.245313][ T4442] Possible unsafe locking scenario: [ 79.245313][ T4442] [ 79.252853][ T4442] CPU0 CPU1 [ 79.258216][ T4442] ---- ---- [ 79.263575][ T4442] lock(rfkill_global_mutex); [ 79.268345][ T4442] lock(&data->open_mutex); [ 79.275659][ T4442] lock(rfkill_global_mutex); [ 79.283139][ T4442] lock((work_completion)(&hdev->bg_scan_update)); [ 79.289731][ T4442] [ 79.289731][ T4442] *** DEADLOCK *** [ 79.289731][ T4442] [ 79.297870][ T4442] 1 lock held by syz.0.17/4442: [ 79.302719][ T4442] #0: ffffffff8d6c51a8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x18b/0x560 [ 79.312941][ T4442] [ 79.312941][ T4442] stack backtrace: [ 79.318822][ T4442] CPU: 0 PID: 4442 Comm: syz.0.17 Not tainted syzkaller #0 [ 79.326022][ T4442] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 79.336074][ T4442] Call Trace: [ 79.339448][ T4442] [ 79.342370][ T4442] dump_stack_lvl+0x188/0x250 [ 79.347041][ T4442] ? load_image+0x400/0x400 [ 79.351550][ T4442] ? show_regs_print_info+0x20/0x20 [ 79.356785][ T4442] ? print_circular_bug+0x12b/0x1a0 [ 79.361989][ T4442] check_noncircular+0x296/0x330 [ 79.366941][ T4442] ? look_up_lock_class+0x71/0x110 [ 79.372240][ T4442] ? add_chain_block+0x940/0x940 [ 79.377197][ T4442] ? lockdep_lock+0xf1/0x1f0 [ 79.381907][ T4442] ? __lock_acquire+0x12e8/0x7d10 [ 79.387046][ T4442] ? mark_lock+0x94/0x320 [ 79.391580][ T4442] __lock_acquire+0x2c42/0x7d10 [ 79.396438][ T4442] ? verify_lock_unused+0x140/0x140 [ 79.401669][ T4442] ? verify_lock_unused+0x140/0x140 [ 79.406866][ T4442] ? mark_lock+0x94/0x320 [ 79.411216][ T4442] lock_acquire+0x19e/0x400 [ 79.415731][ T4442] ? __flush_work+0xfa/0x210 [ 79.420313][ T4442] ? __lock_acquire+0x7d10/0x7d10 [ 79.425333][ T4442] ? read_lock_is_recursive+0x10/0x10 [ 79.431223][ T4442] ? start_flush_work+0x776/0x820 [ 79.436243][ T4442] __flush_work+0x116/0x210 [ 79.440823][ T4442] ? __flush_work+0xfa/0x210 [ 79.445673][ T4442] ? flush_work+0x20/0x20 [ 79.450082][ T4442] ? try_to_grab_pending+0xfa/0x7f0 [ 79.455401][ T4442] ? mark_lock+0x94/0x320 [ 79.459834][ T4442] ? lockdep_hardirqs_on_prepare+0x409/0x770 [ 79.466020][ T4442] ? lock_chain_count+0x20/0x20 [ 79.470964][ T4442] ? mark_lock+0x94/0x320 [ 79.475297][ T4442] ? __cancel_work_timer+0x36a/0x560 [ 79.480675][ T4442] __cancel_work_timer+0x3f4/0x560 [ 79.485782][ T4442] ? cancel_work_sync+0x20/0x20 [ 79.490624][ T4442] ? __cancel_work+0x1f9/0x2e0 [ 79.495576][ T4442] ? lockdep_hardirqs_on+0x94/0x140 [ 79.500857][ T4442] ? __cancel_work+0x27b/0x2e0 [ 79.505611][ T4442] ? cancel_work+0x20/0x20 [ 79.510041][ T4442] ? lock_chain_count+0x20/0x20 [ 79.514914][ T4442] hci_request_cancel_all+0xcc/0x300 [ 79.520195][ T4442] hci_dev_do_close+0x4e/0x1030 [ 79.525835][ T4442] ? _raw_spin_unlock_irqrestore+0xc1/0x120 [ 79.531721][ T4442] ? _raw_spin_unlock+0x40/0x40 [ 79.536561][ T4442] hci_rfkill_set_block+0x10a/0x190 [ 79.541762][ T4442] ? rcu_lock_release+0x20/0x20 [ 79.546608][ T4442] rfkill_set_block+0x1c6/0x420 [ 79.551469][ T4442] rfkill_fop_write+0x452/0x560 [ 79.556314][ T4442] ? rfkill_fop_read+0x4d0/0x4d0 [ 79.561332][ T4442] ? common_file_perm+0x110/0x1c0 [ 79.566351][ T4442] ? fsnotify_perm+0x5d/0x560 [ 79.571038][ T4442] ? security_file_permission+0x75/0xa0 [ 79.576575][ T4442] ? rfkill_fop_read+0x4d0/0x4d0 [ 79.581515][ T4442] vfs_write+0x30b/0xd60 [ 79.586010][ T4442] ? file_end_write+0x250/0x250 [ 79.591043][ T4442] ? __context_tracking_exit+0x4c/0x80 [ 79.596498][ T4442] ? __lock_acquire+0x7d10/0x7d10 [ 79.601517][ T4442] ? __fdget_pos+0x1e2/0x370 [ 79.606113][ T4442] ksys_write+0x152/0x260 [ 79.610438][ T4442] ? __ia32_sys_read+0x80/0x80 [ 79.615192][ T4442] ? lockdep_hardirqs_on+0x94/0x140 [ 79.620479][ T4442] do_syscall_64+0x4c/0xa0 [ 79.624904][ T4442] ? clear_bhb_loop+0x30/0x80 [ 79.629583][ T4442] ? clear_bhb_loop+0x30/0x80 [ 79.634269][ T4442] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 79.640176][ T4442] RIP: 0033:0x7f8639102819 [ 79.644593][ T4442] 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 [ 79.664212][ T4442] RSP: 002b:00007ffd51d2b4c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 79.672840][ T4442] RAX: ffffffffffffffda RBX: 00007f863937bfa0 RCX: 00007f8639102819 [ 79.680827][ T4442] RDX: 0000000000000008 RSI: 0000200000000000 RDI: 0000000000000003 [ 79.688811][ T4442] RBP: 00007f8639198c91 R08: 0000000000000000 R09: 0000000000000000 [ 79.696866][ T4442] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 79.705045][ T4442] R13: 00007f863937bfac R14: 00007f863937bfa0 R15: 00007f863937bfa0 [ 79.713034][ T4442]