Warning: Permanently added '10.128.0.145' (ED25519) to the list of known hosts. 2026/04/26 04:25:58 parsed 1 programs [ 63.084232][ T4188] cgroup: Unknown subsys name 'net' [ 63.193297][ T4188] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size = 127995904 bytes [ 64.701359][ T4188] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k FS [ 67.517080][ T4235] chnl_net:caif_netlink_parms(): no params data found [ 67.588913][ T4235] bridge0: port 1(bridge_slave_0) entered blocking state [ 67.596875][ T4235] bridge0: port 1(bridge_slave_0) entered disabled state [ 67.605586][ T4235] device bridge_slave_0 entered promiscuous mode [ 67.617008][ T4235] bridge0: port 2(bridge_slave_1) entered blocking state [ 67.624382][ T4235] bridge0: port 2(bridge_slave_1) entered disabled state [ 67.634238][ T4235] device bridge_slave_1 entered promiscuous mode [ 67.663278][ T4235] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 67.676455][ T4235] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 67.706807][ T4235] team0: Port device team_slave_0 added [ 67.716579][ T4235] team0: Port device team_slave_1 added [ 67.740068][ T4235] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 67.747055][ T4235] 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. [ 67.773490][ T4235] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 67.786850][ T4235] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 67.794106][ T4235] 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. [ 67.820100][ T4235] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 67.858594][ T4235] device hsr_slave_0 entered promiscuous mode [ 67.865531][ T4235] device hsr_slave_1 entered promiscuous mode [ 68.000722][ T4235] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 68.012930][ T4235] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 68.023234][ T4235] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 68.034191][ T4235] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 68.056843][ T4235] bridge0: port 2(bridge_slave_1) entered blocking state [ 68.064023][ T4235] bridge0: port 2(bridge_slave_1) entered forwarding state [ 68.072402][ T4235] bridge0: port 1(bridge_slave_0) entered blocking state [ 68.079667][ T4235] bridge0: port 1(bridge_slave_0) entered forwarding state [ 68.144457][ T4235] 8021q: adding VLAN 0 to HW filter on device bond0 [ 68.180413][ T1279] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 68.225188][ T1279] bridge0: port 1(bridge_slave_0) entered disabled state [ 68.234796][ T1279] bridge0: port 2(bridge_slave_1) entered disabled state [ 68.279110][ T4235] 8021q: adding VLAN 0 to HW filter on device team0 [ 68.294875][ T1279] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 68.304955][ T1279] bridge0: port 1(bridge_slave_0) entered blocking state [ 68.312092][ T1279] bridge0: port 1(bridge_slave_0) entered forwarding state [ 68.330520][ T1279] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 68.340492][ T1279] bridge0: port 2(bridge_slave_1) entered blocking state [ 68.347613][ T1279] bridge0: port 2(bridge_slave_1) entered forwarding state [ 68.357143][ T1279] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 68.366890][ T1279] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 68.378323][ T1279] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 68.390867][ T1279] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 68.402982][ T1279] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 68.412625][ T1279] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 68.424263][ T4235] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 68.504797][ T1279] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 68.512968][ T1279] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 68.524812][ T4235] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 68.542486][ T1279] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 68.552529][ T1279] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 68.572007][ T1279] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 68.580477][ T1279] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 68.589711][ T3053] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 68.598146][ T3053] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 68.622234][ T4235] device veth0_vlan entered promiscuous mode [ 68.635513][ T4235] device veth1_vlan entered promiscuous mode [ 68.654661][ T3053] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 68.663957][ T3053] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 68.672706][ T3053] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 68.682217][ T3053] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 68.694377][ T4235] device veth0_macvtap entered promiscuous mode [ 68.722084][ T4235] device veth1_macvtap entered promiscuous mode [ 68.736716][ T4235] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 68.745079][ T3053] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 68.753587][ T3053] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 68.762748][ T3053] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 68.772202][ T3053] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 68.803152][ T4235] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 68.812062][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 68.820824][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 68.833088][ T4235] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 68.842551][ T4235] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 68.852695][ T4235] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 68.861601][ T4235] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 70.072053][ T1279] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 70.082869][ T1279] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 70.095912][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 70.118360][ T1279] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 70.126331][ T1279] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 70.135038][ T1279] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2026/04/26 04:26:07 executed programs: 0 [ 70.888967][ T4285] chnl_net:caif_netlink_parms(): no params data found [ 70.941324][ T4285] bridge0: port 1(bridge_slave_0) entered blocking state [ 70.949866][ T4285] bridge0: port 1(bridge_slave_0) entered disabled state [ 70.959384][ T4285] device bridge_slave_0 entered promiscuous mode [ 70.968509][ T4285] bridge0: port 2(bridge_slave_1) entered blocking state [ 70.975857][ T4285] bridge0: port 2(bridge_slave_1) entered disabled state [ 70.984909][ T4285] device bridge_slave_1 entered promiscuous mode [ 71.011495][ T4285] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 71.023787][ T4285] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 71.050128][ T4285] team0: Port device team_slave_0 added [ 71.058739][ T4285] team0: Port device team_slave_1 added [ 71.074641][ T4285] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 71.083834][ T4285] 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. [ 71.110650][ T4285] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 71.126581][ T4285] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 71.135073][ T4285] 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. [ 71.162203][ T4285] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 71.185390][ T144] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 71.213537][ T4285] device hsr_slave_0 entered promiscuous mode [ 71.220686][ T4285] device hsr_slave_1 entered promiscuous mode [ 71.227812][ T4285] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 71.236361][ T4285] Cannot create hsr debugfs directory [ 71.589901][ T1421] ieee802154 phy0 wpan0: encryption failed: -22 [ 71.596694][ T1421] ieee802154 phy1 wpan1: encryption failed: -22 [ 72.788369][ T4250] Bluetooth: hci0: command 0x0409 tx timeout [ 73.853036][ T144] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 73.911919][ T144] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 73.983546][ T144] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 74.776043][ T4285] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 74.787020][ T4285] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 74.798044][ T4285] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 74.806648][ T4285] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 74.864726][ T4285] 8021q: adding VLAN 0 to HW filter on device bond0 [ 74.877476][ T4250] Bluetooth: hci0: command 0x041b tx timeout [ 74.885535][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 74.893892][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 74.906279][ T4285] 8021q: adding VLAN 0 to HW filter on device team0 [ 74.931471][ T1279] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 74.940846][ T1279] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 74.951604][ T1279] bridge0: port 1(bridge_slave_0) entered blocking state [ 74.958911][ T1279] bridge0: port 1(bridge_slave_0) entered forwarding state [ 74.969691][ T1279] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 74.995232][ T1279] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 75.004348][ T1279] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 75.014072][ T1279] bridge0: port 2(bridge_slave_1) entered blocking state [ 75.021196][ T1279] bridge0: port 2(bridge_slave_1) entered forwarding state [ 75.040590][ T1279] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 75.049674][ T1279] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 75.058646][ T1279] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 75.071354][ T1279] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 75.080137][ T1279] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 75.089635][ T1279] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 75.104386][ T4285] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 75.115183][ T4285] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 75.129405][ T1279] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 75.138232][ T1279] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 75.146489][ T1279] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 75.155826][ T1279] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 75.164459][ T1279] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 75.173852][ T1279] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 75.284306][ T1279] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 75.293320][ T1279] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 75.321719][ T4285] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 75.339690][ T1279] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 75.348853][ T1279] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 75.370466][ T4285] device veth0_vlan entered promiscuous mode [ 75.377038][ T1279] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 75.385486][ T1279] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 75.396354][ T1279] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 75.405703][ T1279] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 75.423384][ T4285] device veth1_vlan entered promiscuous mode [ 75.454215][ T1279] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 75.462880][ T1279] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 75.472862][ T1279] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 75.482258][ T1279] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 75.493355][ T4285] device veth0_macvtap entered promiscuous mode [ 75.516652][ T144] device hsr_slave_0 left promiscuous mode [ 75.524224][ T144] device hsr_slave_1 left promiscuous mode [ 75.531163][ T144] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 75.540053][ T144] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 75.549317][ T144] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 75.557024][ T144] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 75.564970][ T144] device bridge_slave_1 left promiscuous mode [ 75.571928][ T144] bridge0: port 2(bridge_slave_1) entered disabled state [ 75.584195][ T144] device bridge_slave_0 left promiscuous mode [ 75.590677][ T144] bridge0: port 1(bridge_slave_0) entered disabled state [ 75.608481][ T144] device veth1_macvtap left promiscuous mode [ 75.615097][ T144] device veth0_macvtap left promiscuous mode [ 75.622460][ T144] device veth1_vlan left promiscuous mode [ 75.628798][ T144] device veth0_vlan left promiscuous mode [ 75.786178][ T144] team0 (unregistering): Port device team_slave_1 removed [ 75.800847][ T144] team0 (unregistering): Port device team_slave_0 removed [ 75.815280][ T144] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 75.831638][ T144] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 75.883420][ T144] bond0 (unregistering): Released all slaves [ 75.924694][ T4285] device veth1_macvtap entered promiscuous mode [ 75.935508][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 75.943936][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 75.959220][ T4285] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 75.966541][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 75.975511][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 75.987980][ T4285] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 75.999832][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 76.008705][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 76.023818][ T4285] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 76.033148][ T4285] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 76.042316][ T4285] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 76.051665][ T4285] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 76.122137][ T1279] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 76.131034][ T1279] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 76.142128][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 76.174724][ T4345] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 76.183088][ T4345] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 76.191484][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 76.322175][ T4346] [ 76.324557][ T4346] ====================================================== [ 76.331596][ T4346] WARNING: possible circular locking dependency detected [ 76.338642][ T4346] syzkaller #0 Not tainted [ 76.343195][ T4346] ------------------------------------------------------ [ 76.350233][ T4346] syz.0.17/4346 is trying to acquire lock: [ 76.356244][ T4346] ffff888077860c28 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}, at: __flush_work+0xfa/0x210 [ 76.367330][ T4346] [ 76.367330][ T4346] but task is already holding lock: [ 76.374721][ T4346] ffffffff8d6c5de8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x18b/0x560 [ 76.384430][ T4346] [ 76.384430][ T4346] which lock already depends on the new lock. [ 76.384430][ T4346] [ 76.395677][ T4346] [ 76.395677][ T4346] the existing dependency chain (in reverse order) is: [ 76.404836][ T4346] [ 76.404836][ T4346] -> #4 (rfkill_global_mutex){+.+.}-{3:3}: [ 76.412967][ T4346] __mutex_lock_common+0x1e3/0x2400 [ 76.419043][ T4346] mutex_lock_nested+0x17/0x20 [ 76.424468][ T4346] rfkill_register+0x33/0x980 [ 76.429722][ T4346] hci_register_dev+0x452/0x970 [ 76.435242][ T4346] vhci_create_device+0x32c/0x5c0 [ 76.440828][ T4346] vhci_write+0x391/0x450 [ 76.445895][ T4346] vfs_write+0x745/0xd60 [ 76.450694][ T4346] ksys_write+0x152/0x260 [ 76.455751][ T4346] do_syscall_64+0x4c/0xa0 [ 76.460811][ T4346] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 76.467576][ T4346] [ 76.467576][ T4346] -> #3 (&data->open_mutex){+.+.}-{3:3}: [ 76.475666][ T4346] __mutex_lock_common+0x1e3/0x2400 [ 76.481430][ T4346] mutex_lock_nested+0x17/0x20 [ 76.486763][ T4346] vhci_send_frame+0x88/0x100 [ 76.492000][ T4346] hci_send_frame+0x1a9/0x2e0 [ 76.497427][ T4346] hci_tx_work+0x9f9/0x1710 [ 76.502571][ T4346] process_one_work+0x85f/0x1010 [ 76.508254][ T4346] worker_thread+0xaa6/0x1290 [ 76.513576][ T4346] kthread+0x436/0x520 [ 76.518212][ T4346] ret_from_fork+0x1f/0x30 [ 76.523293][ T4346] [ 76.523293][ T4346] -> #2 ((work_completion)(&hdev->tx_work)){+.+.}-{0:0}: [ 76.532661][ T4346] __flush_work+0x116/0x210 [ 76.537714][ T4346] hci_dev_do_close+0x1e7/0x1030 [ 76.543199][ T4346] hci_unregister_dev+0x2d7/0x580 [ 76.548889][ T4346] vhci_release+0x73/0xc0 [ 76.553858][ T4346] __fput+0x234/0x930 [ 76.558487][ T4346] task_work_run+0x125/0x1a0 [ 76.563632][ T4346] do_exit+0x626/0x20c0 [ 76.568346][ T4346] do_group_exit+0x12e/0x300 [ 76.573480][ T4346] get_signal+0x6ca/0x12c0 [ 76.578442][ T4346] arch_do_signal_or_restart+0xe7/0x12c0 [ 76.584722][ T4346] exit_to_user_mode_loop+0x9e/0x130 [ 76.590818][ T4346] exit_to_user_mode_prepare+0xee/0x180 [ 76.597196][ T4346] syscall_exit_to_user_mode+0x16/0x40 [ 76.603216][ T4346] do_syscall_64+0x58/0xa0 [ 76.608430][ T4346] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 76.614997][ T4346] [ 76.614997][ T4346] -> #1 (&hdev->req_lock){+.+.}-{3:3}: [ 76.622696][ T4346] __mutex_lock_common+0x1e3/0x2400 [ 76.628629][ T4346] mutex_lock_nested+0x17/0x20 [ 76.633962][ T4346] bg_scan_update+0x44/0x3b0 [ 76.639119][ T4346] process_one_work+0x85f/0x1010 [ 76.644647][ T4346] worker_thread+0xaa6/0x1290 [ 76.649988][ T4346] kthread+0x436/0x520 [ 76.654813][ T4346] ret_from_fork+0x1f/0x30 [ 76.659794][ T4346] [ 76.659794][ T4346] -> #0 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}: [ 76.669647][ T4346] __lock_acquire+0x2c42/0x7d10 [ 76.675062][ T4346] lock_acquire+0x19e/0x400 [ 76.680123][ T4346] __flush_work+0x116/0x210 [ 76.685290][ T4346] __cancel_work_timer+0x3f4/0x560 [ 76.690954][ T4346] hci_request_cancel_all+0xcc/0x300 [ 76.697001][ T4346] hci_dev_do_close+0x4e/0x1030 [ 76.702411][ T4346] hci_rfkill_set_block+0x10a/0x190 [ 76.708166][ T4346] rfkill_set_block+0x1c9/0x3d0 [ 76.713574][ T4346] rfkill_fop_write+0x452/0x560 [ 76.718985][ T4346] vfs_write+0x30b/0xd60 [ 76.723780][ T4346] ksys_write+0x152/0x260 [ 76.728663][ T4346] do_syscall_64+0x4c/0xa0 [ 76.733641][ T4346] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 76.740275][ T4346] [ 76.740275][ T4346] other info that might help us debug this: [ 76.740275][ T4346] [ 76.750537][ T4346] Chain exists of: [ 76.750537][ T4346] (work_completion)(&hdev->bg_scan_update) --> &data->open_mutex --> rfkill_global_mutex [ 76.750537][ T4346] [ 76.766312][ T4346] Possible unsafe locking scenario: [ 76.766312][ T4346] [ 76.773958][ T4346] CPU0 CPU1 [ 76.779781][ T4346] ---- ---- [ 76.785256][ T4346] lock(rfkill_global_mutex); [ 76.790141][ T4346] lock(&data->open_mutex); [ 76.797463][ T4346] lock(rfkill_global_mutex); [ 76.804798][ T4346] lock((work_completion)(&hdev->bg_scan_update)); [ 76.811592][ T4346] [ 76.811592][ T4346] *** DEADLOCK *** [ 76.811592][ T4346] [ 76.819859][ T4346] 1 lock held by syz.0.17/4346: [ 76.824821][ T4346] #0: ffffffff8d6c5de8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x18b/0x560 [ 76.834961][ T4346] [ 76.834961][ T4346] stack backtrace: [ 76.840958][ T4346] CPU: 1 PID: 4346 Comm: syz.0.17 Not tainted syzkaller #0 [ 76.848197][ T4346] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 76.858560][ T4346] Call Trace: [ 76.861862][ T4346] [ 76.864832][ T4346] dump_stack_lvl+0x188/0x250 [ 76.869543][ T4346] ? load_image+0x400/0x400 [ 76.874076][ T4346] ? show_regs_print_info+0x20/0x20 [ 76.879314][ T4346] ? print_circular_bug+0x12b/0x1a0 [ 76.884629][ T4346] check_noncircular+0x296/0x330 [ 76.889604][ T4346] ? look_up_lock_class+0x71/0x110 [ 76.894748][ T4346] ? add_chain_block+0x940/0x940 [ 76.899717][ T4346] ? lockdep_lock+0xf1/0x1f0 [ 76.904344][ T4346] ? __lock_acquire+0x12e8/0x7d10 [ 76.909436][ T4346] ? mark_lock+0x94/0x320 [ 76.913797][ T4346] __lock_acquire+0x2c42/0x7d10 [ 76.918780][ T4346] ? verify_lock_unused+0x140/0x140 [ 76.924121][ T4346] ? verify_lock_unused+0x140/0x140 [ 76.929362][ T4346] ? mark_lock+0x94/0x320 [ 76.933731][ T4346] lock_acquire+0x19e/0x400 [ 76.938266][ T4346] ? __flush_work+0xfa/0x210 [ 76.942886][ T4346] ? __lock_acquire+0x7d10/0x7d10 [ 76.948035][ T4346] ? read_lock_is_recursive+0x10/0x10 [ 76.953540][ T4346] ? start_flush_work+0x776/0x820 [ 76.958605][ T4346] __flush_work+0x116/0x210 [ 76.963216][ T4346] ? __flush_work+0xfa/0x210 [ 76.967839][ T4346] ? flush_work+0x20/0x20 [ 76.972200][ T4346] ? try_to_grab_pending+0xfa/0x7f0 [ 76.977520][ T4346] ? mark_lock+0x94/0x320 [ 76.981890][ T4346] ? lockdep_hardirqs_on_prepare+0x409/0x770 [ 76.988253][ T4346] ? lock_chain_count+0x20/0x20 [ 76.993138][ T4346] ? mark_lock+0x94/0x320 [ 76.997692][ T4346] ? __cancel_work_timer+0x36a/0x560 [ 77.003005][ T4346] __cancel_work_timer+0x3f4/0x560 [ 77.008156][ T4346] ? cancel_work_sync+0x20/0x20 [ 77.013135][ T4346] ? __cancel_work+0x1f9/0x2e0 [ 77.018104][ T4346] ? lockdep_hardirqs_on+0x94/0x140 [ 77.023716][ T4346] ? __cancel_work+0x27b/0x2e0 [ 77.028512][ T4346] ? cancel_work+0x20/0x20 [ 77.032963][ T4346] ? lock_chain_count+0x20/0x20 [ 77.038035][ T4346] hci_request_cancel_all+0xcc/0x300 [ 77.043368][ T4346] hci_dev_do_close+0x4e/0x1030 [ 77.048252][ T4346] ? _raw_spin_unlock_irqrestore+0xc1/0x120 [ 77.054181][ T4346] ? _raw_spin_unlock+0x40/0x40 [ 77.059158][ T4346] hci_rfkill_set_block+0x10a/0x190 [ 77.064412][ T4346] ? rcu_lock_release+0x20/0x20 [ 77.069300][ T4346] rfkill_set_block+0x1c9/0x3d0 [ 77.074187][ T4346] rfkill_fop_write+0x452/0x560 [ 77.079069][ T4346] ? rfkill_fop_read+0x520/0x520 [ 77.084050][ T4346] ? common_file_perm+0x140/0x1c0 [ 77.089115][ T4346] ? fsnotify_perm+0x5d/0x560 [ 77.093831][ T4346] ? security_file_permission+0x75/0xa0 [ 77.099702][ T4346] ? rfkill_fop_read+0x520/0x520 [ 77.104800][ T4346] vfs_write+0x30b/0xd60 [ 77.109079][ T4346] ? file_end_write+0x250/0x250 [ 77.113963][ T4346] ? __context_tracking_exit+0x4c/0x80 [ 77.119456][ T4346] ? __lock_acquire+0x7d10/0x7d10 [ 77.124519][ T4346] ? __fdget_pos+0x1e2/0x370 [ 77.129176][ T4346] ksys_write+0x152/0x260 [ 77.133644][ T4346] ? __ia32_sys_read+0x80/0x80 [ 77.138529][ T4346] ? lockdep_hardirqs_on+0x94/0x140 [ 77.143852][ T4346] do_syscall_64+0x4c/0xa0 [ 77.148322][ T4346] ? clear_bhb_loop+0x30/0x80 [ 77.153045][ T4346] ? clear_bhb_loop+0x30/0x80 [ 77.157936][ T4346] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 77.164059][ T4346] RIP: 0033:0x7f5322313dd9 [ 77.168529][ T4346] 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 [ 77.188517][ T4346] RSP: 002b:00007ffd46ceefb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 77.197013][ T4346] RAX: ffffffffffffffda RBX: 00007f532258cfa0 RCX: 00007f5322313dd9 [ 77.205014][ T4346] RDX: 0000000000000008 RSI: 00002000000001c0 RDI: 0000000000000003 [ 77.213104][ T4346] RBP: 00007f53223a9d69 R08: 0000000000000000 R09: 0000000000000000 [ 77.221104][ T4346] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 77.229214][ T4346] R13: 00007f532258cfac R14: 00007f532258cfa0 R15: 00007f532258cfa0 [ 77.237510][ T4346] [ 77.243946][ T4249] Bluetooth: hci0: command 0x040f tx timeout