Warning: Permanently added '10.128.1.78' (ED25519) to the list of known hosts. 2026/01/16 06:56:54 parsed 1 programs [ 67.733511][ T4188] cgroup: Unknown subsys name 'net' [ 67.869163][ T4188] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size = 127995904 bytes [ 69.364206][ T4188] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k FS [ 71.356127][ T1425] ieee802154 phy0 wpan0: encryption failed: -22 [ 71.362859][ T1425] ieee802154 phy1 wpan1: encryption failed: -22 [ 71.603443][ T4224] chnl_net:caif_netlink_parms(): no params data found [ 71.670567][ T4224] bridge0: port 1(bridge_slave_0) entered blocking state [ 71.678370][ T4224] bridge0: port 1(bridge_slave_0) entered disabled state [ 71.687110][ T4224] device bridge_slave_0 entered promiscuous mode [ 71.696836][ T4224] bridge0: port 2(bridge_slave_1) entered blocking state [ 71.704061][ T4224] bridge0: port 2(bridge_slave_1) entered disabled state [ 71.712309][ T4224] device bridge_slave_1 entered promiscuous mode [ 71.740355][ T4224] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 71.752194][ T4224] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 71.783009][ T4224] team0: Port device team_slave_0 added [ 71.790946][ T4224] team0: Port device team_slave_1 added [ 71.820014][ T4224] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 71.827069][ T4224] 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. [ 71.854323][ T4224] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 71.867428][ T4224] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 71.874465][ T4224] 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. [ 71.900476][ T4224] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 71.940485][ T4224] device hsr_slave_0 entered promiscuous mode [ 71.947449][ T4224] device hsr_slave_1 entered promiscuous mode [ 72.081310][ T4224] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 72.094226][ T4224] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 72.104524][ T4224] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 72.114448][ T4224] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 72.150646][ T4224] bridge0: port 2(bridge_slave_1) entered blocking state [ 72.158015][ T4224] bridge0: port 2(bridge_slave_1) entered forwarding state [ 72.166105][ T4224] bridge0: port 1(bridge_slave_0) entered blocking state [ 72.173240][ T4224] bridge0: port 1(bridge_slave_0) entered forwarding state [ 72.235344][ T4224] 8021q: adding VLAN 0 to HW filter on device bond0 [ 72.249185][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 72.262190][ T144] bridge0: port 1(bridge_slave_0) entered disabled state [ 72.271759][ T144] bridge0: port 2(bridge_slave_1) entered disabled state [ 72.280367][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 72.295815][ T4224] 8021q: adding VLAN 0 to HW filter on device team0 [ 72.308600][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 72.317743][ T144] bridge0: port 1(bridge_slave_0) entered blocking state [ 72.324902][ T144] bridge0: port 1(bridge_slave_0) entered forwarding state [ 72.345039][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 72.355306][ T144] bridge0: port 2(bridge_slave_1) entered blocking state [ 72.362434][ T144] bridge0: port 2(bridge_slave_1) entered forwarding state [ 72.385864][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 72.394983][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 72.405566][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 72.418815][ T1241] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 72.435415][ T1241] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 72.448026][ T4224] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 72.589079][ T1241] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 72.599605][ T1241] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 72.616761][ T4224] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 72.639075][ T1273] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 72.650642][ T1273] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 72.674403][ T1273] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 72.683678][ T1273] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 72.693839][ T1273] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 72.701742][ T1273] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 72.710316][ T4224] device veth0_vlan entered promiscuous mode [ 72.724369][ T4224] device veth1_vlan entered promiscuous mode [ 72.749221][ T1273] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 72.758963][ T1273] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 72.769359][ T1273] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 72.778537][ T1273] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 72.790999][ T4224] device veth0_macvtap entered promiscuous mode [ 72.803418][ T4224] device veth1_macvtap entered promiscuous mode [ 72.823548][ T4224] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 72.831209][ T1273] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 72.840141][ T1273] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 72.848577][ T1273] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 72.857518][ T1273] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 72.870815][ T4224] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 72.879176][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 72.890180][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 72.902602][ T4224] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 72.911461][ T4224] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 72.921086][ T4224] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 72.930270][ T4224] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 73.159511][ T1241] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 73.177497][ T1241] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 73.189162][ T154] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 73.211036][ T1273] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 73.229919][ T1241] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 73.238154][ T1241] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 73.247649][ T1241] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 75.468983][ T154] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 78.049023][ T154] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 78.100952][ T154] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 2026/01/16 06:57:08 executed programs: 0 [ 79.424347][ T154] device hsr_slave_0 left promiscuous mode [ 79.445672][ T154] device hsr_slave_1 left promiscuous mode [ 79.458004][ T154] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 79.466167][ T154] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 79.479979][ T154] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 79.496592][ T154] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 79.505964][ T154] device bridge_slave_1 left promiscuous mode [ 79.513221][ T154] bridge0: port 2(bridge_slave_1) entered disabled state [ 79.528935][ T154] device bridge_slave_0 left promiscuous mode [ 79.537277][ T154] bridge0: port 1(bridge_slave_0) entered disabled state [ 79.561299][ T154] device veth1_macvtap left promiscuous mode [ 79.567845][ T154] device veth0_macvtap left promiscuous mode [ 79.574798][ T154] device veth1_vlan left promiscuous mode [ 79.580796][ T154] device veth0_vlan left promiscuous mode [ 79.756438][ T154] team0 (unregistering): Port device team_slave_1 removed [ 79.768899][ T154] team0 (unregistering): Port device team_slave_0 removed [ 79.783566][ T154] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 79.799320][ T154] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 79.855655][ T154] bond0 (unregistering): Released all slaves [ 80.092534][ T4333] chnl_net:caif_netlink_parms(): no params data found [ 80.183453][ T4333] bridge0: port 1(bridge_slave_0) entered blocking state [ 80.190821][ T4333] bridge0: port 1(bridge_slave_0) entered disabled state [ 80.199102][ T4333] device bridge_slave_0 entered promiscuous mode [ 80.208080][ T4333] bridge0: port 2(bridge_slave_1) entered blocking state [ 80.215346][ T4333] bridge0: port 2(bridge_slave_1) entered disabled state [ 80.224189][ T4333] device bridge_slave_1 entered promiscuous mode [ 80.262632][ T4333] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 80.274319][ T4333] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 80.303945][ T4333] team0: Port device team_slave_0 added [ 80.324123][ T4333] team0: Port device team_slave_1 added [ 80.385320][ T4333] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 80.402060][ T4333] 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. [ 80.452070][ T4333] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 80.496612][ T4333] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 80.505770][ T4333] 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. [ 80.533873][ T4333] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 80.620415][ T4333] device hsr_slave_0 entered promiscuous mode [ 80.634233][ T4333] device hsr_slave_1 entered promiscuous mode [ 81.353933][ T4333] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 81.371926][ T4333] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 81.393224][ T4333] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 81.413036][ T4333] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 81.512938][ T4283] Bluetooth: hci0: command 0x0409 tx timeout [ 81.589801][ T4333] 8021q: adding VLAN 0 to HW filter on device bond0 [ 81.620000][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 81.641373][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 81.666033][ T4333] 8021q: adding VLAN 0 to HW filter on device team0 [ 81.702278][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 81.720661][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 81.739968][ T9] bridge0: port 1(bridge_slave_0) entered blocking state [ 81.747127][ T9] bridge0: port 1(bridge_slave_0) entered forwarding state [ 81.802186][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 81.844778][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 81.871266][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 81.902538][ T9] bridge0: port 2(bridge_slave_1) entered blocking state [ 81.909650][ T9] bridge0: port 2(bridge_slave_1) entered forwarding state [ 81.964543][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 81.993254][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 82.032984][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 82.044763][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 82.065453][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 82.084696][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 82.094991][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 82.105423][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 82.118817][ T4333] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 82.142945][ T4333] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 82.163557][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 82.171566][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 82.202738][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 82.534038][ T1273] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 82.541728][ T1273] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 82.597901][ T4333] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 82.652647][ T1260] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 82.674776][ T1260] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 82.696224][ T4333] device veth0_vlan entered promiscuous mode [ 82.704512][ T1260] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 82.723479][ T1260] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 82.738616][ T4333] device veth1_vlan entered promiscuous mode [ 82.763951][ T1260] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 82.782752][ T1260] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 82.790704][ T1260] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 82.822752][ T1260] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 82.840279][ T4333] device veth0_macvtap entered promiscuous mode [ 82.867342][ T4333] device veth1_macvtap entered promiscuous mode [ 82.879862][ T1260] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 82.892714][ T1260] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 82.901504][ T1260] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 82.932698][ T4333] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 82.940269][ T1260] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 82.964894][ T1260] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 82.974611][ T1260] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 82.997359][ T4333] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 83.008112][ T1273] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 83.018945][ T1273] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 83.033184][ T4333] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 83.043893][ T4333] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 83.053698][ T4333] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 83.064123][ T4333] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 83.145756][ T1241] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 83.158159][ T1241] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 83.191386][ T1260] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 83.213630][ T1241] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 83.221831][ T1241] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 83.232390][ T1273] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 83.569096][ T4430] [ 83.571482][ T4430] ====================================================== [ 83.578521][ T4430] WARNING: possible circular locking dependency detected [ 83.585571][ T4430] syzkaller #0 Not tainted [ 83.590017][ T4430] ------------------------------------------------------ [ 83.597060][ T4430] syz.0.17/4430 is trying to acquire lock: [ 83.602881][ T4430] ffff88802a83cc28 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}, at: __flush_work+0xc1/0x1b0 [ 83.613986][ T4430] [ 83.613986][ T4430] but task is already holding lock: [ 83.621368][ T4430] ffffffff8d4ba7e8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x19e/0x560 [ 83.631070][ T4430] [ 83.631070][ T4430] which lock already depends on the new lock. [ 83.631070][ T4430] [ 83.641492][ T4430] [ 83.641492][ T4430] the existing dependency chain (in reverse order) is: [ 83.650527][ T4430] [ 83.650527][ T4430] -> #4 (rfkill_global_mutex){+.+.}-{3:3}: [ 83.658555][ T4430] __mutex_lock_common+0x1eb/0x2390 [ 83.664319][ T4430] mutex_lock_nested+0x17/0x20 [ 83.669650][ T4430] rfkill_register+0x33/0x8a0 [ 83.674881][ T4430] hci_register_dev+0x452/0x970 [ 83.680290][ T4430] vhci_create_device+0x32c/0x5c0 [ 83.685868][ T4430] vhci_write+0x391/0x450 [ 83.690745][ T4430] vfs_write+0x712/0xd00 [ 83.695532][ T4430] ksys_write+0x14d/0x250 [ 83.700415][ T4430] do_syscall_64+0x4c/0xa0 [ 83.705378][ T4430] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 83.711827][ T4430] [ 83.711827][ T4430] -> #3 (&data->open_mutex){+.+.}-{3:3}: [ 83.719677][ T4430] __mutex_lock_common+0x1eb/0x2390 [ 83.725433][ T4430] mutex_lock_nested+0x17/0x20 [ 83.730754][ T4430] vhci_send_frame+0x88/0x100 [ 83.735979][ T4430] hci_send_frame+0x1a9/0x2e0 [ 83.741203][ T4430] hci_tx_work+0x9f9/0x1710 [ 83.746266][ T4430] process_one_work+0x863/0x1000 [ 83.751754][ T4430] worker_thread+0xaa8/0x12a0 [ 83.756981][ T4430] kthread+0x436/0x520 [ 83.761595][ T4430] ret_from_fork+0x1f/0x30 [ 83.766568][ T4430] [ 83.766568][ T4430] -> #2 ((work_completion)(&hdev->tx_work)){+.+.}-{0:0}: [ 83.775810][ T4430] __flush_work+0xdd/0x1b0 [ 83.780784][ T4430] hci_dev_do_close+0x1e7/0x1030 [ 83.786274][ T4430] hci_unregister_dev+0x2d7/0x580 [ 83.791846][ T4430] vhci_release+0x73/0xc0 [ 83.796724][ T4430] __fput+0x234/0x930 [ 83.801252][ T4430] task_work_run+0x125/0x1a0 [ 83.806394][ T4430] do_exit+0x61e/0x20a0 [ 83.811103][ T4430] do_group_exit+0x12e/0x300 [ 83.816241][ T4430] get_signal+0x6ca/0x12c0 [ 83.821208][ T4430] arch_do_signal_or_restart+0xc1/0x1300 [ 83.827389][ T4430] exit_to_user_mode_loop+0x9e/0x130 [ 83.833268][ T4430] exit_to_user_mode_prepare+0xee/0x180 [ 83.839366][ T4430] syscall_exit_to_user_mode+0x16/0x40 [ 83.845375][ T4430] do_syscall_64+0x58/0xa0 [ 83.850341][ T4430] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 83.856790][ T4430] [ 83.856790][ T4430] -> #1 (&hdev->req_lock){+.+.}-{3:3}: [ 83.864464][ T4430] __mutex_lock_common+0x1eb/0x2390 [ 83.870223][ T4430] mutex_lock_nested+0x17/0x20 [ 83.875541][ T4430] bg_scan_update+0x44/0x3b0 [ 83.880696][ T4430] process_one_work+0x863/0x1000 [ 83.886184][ T4430] worker_thread+0xaa8/0x12a0 [ 83.891412][ T4430] kthread+0x436/0x520 [ 83.896026][ T4430] ret_from_fork+0x1f/0x30 [ 83.900996][ T4430] [ 83.900996][ T4430] -> #0 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}: [ 83.910845][ T4430] __lock_acquire+0x2c33/0x7c60 [ 83.916253][ T4430] lock_acquire+0x197/0x3f0 [ 83.921306][ T4430] __flush_work+0xdd/0x1b0 [ 83.926269][ T4430] __cancel_work_timer+0x3ac/0x520 [ 83.931949][ T4430] hci_request_cancel_all+0xcc/0x300 [ 83.937789][ T4430] hci_dev_do_close+0x4e/0x1030 [ 83.943193][ T4430] hci_rfkill_set_block+0x10a/0x190 [ 83.948969][ T4430] rfkill_set_block+0x1c6/0x420 [ 83.954372][ T4430] rfkill_fop_write+0x458/0x560 [ 83.959779][ T4430] vfs_write+0x300/0xd00 [ 83.964573][ T4430] ksys_write+0x14d/0x250 [ 83.969455][ T4430] do_syscall_64+0x4c/0xa0 [ 83.974415][ T4430] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 83.980862][ T4430] [ 83.980862][ T4430] other info that might help us debug this: [ 83.980862][ T4430] [ 83.991113][ T4430] Chain exists of: [ 83.991113][ T4430] (work_completion)(&hdev->bg_scan_update) --> &data->open_mutex --> rfkill_global_mutex [ 83.991113][ T4430] [ 84.006980][ T4430] Possible unsafe locking scenario: [ 84.006980][ T4430] [ 84.014457][ T4430] CPU0 CPU1 [ 84.019842][ T4430] ---- ---- [ 84.025225][ T4430] lock(rfkill_global_mutex); [ 84.030022][ T4430] lock(&data->open_mutex); [ 84.037160][ T4430] lock(rfkill_global_mutex); [ 84.044469][ T4430] lock((work_completion)(&hdev->bg_scan_update)); [ 84.051089][ T4430] [ 84.051089][ T4430] *** DEADLOCK *** [ 84.051089][ T4430] [ 84.059253][ T4430] 1 lock held by syz.0.17/4430: [ 84.064126][ T4430] #0: ffffffff8d4ba7e8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x19e/0x560 [ 84.074373][ T4430] [ 84.074373][ T4430] stack backtrace: [ 84.080298][ T4430] CPU: 1 PID: 4430 Comm: syz.0.17 Not tainted syzkaller #0 [ 84.087532][ T4430] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 [ 84.097629][ T4430] Call Trace: [ 84.100933][ T4430] [ 84.103885][ T4430] dump_stack_lvl+0x168/0x230 [ 84.108597][ T4430] ? load_image+0x3b0/0x3b0 [ 84.113131][ T4430] ? show_regs_print_info+0x20/0x20 [ 84.118371][ T4430] ? print_circular_bug+0x12b/0x1a0 [ 84.123691][ T4430] check_noncircular+0x274/0x310 [ 84.128707][ T4430] ? add_chain_block+0x940/0x940 [ 84.133682][ T4430] ? lockdep_lock+0xdc/0x1e0 [ 84.138307][ T4430] ? __lock_acquire+0x12d9/0x7c60 [ 84.143365][ T4430] ? lockdep_lock+0x1e0/0x1e0 [ 84.148074][ T4430] ? mark_lock+0x94/0x320 [ 84.152435][ T4430] __lock_acquire+0x2c33/0x7c60 [ 84.157325][ T4430] ? verify_lock_unused+0x140/0x140 [ 84.162560][ T4430] ? release_firmware_map_entry+0x190/0x190 [ 84.168578][ T4430] ? verify_lock_unused+0x140/0x140 [ 84.173824][ T4430] lock_acquire+0x197/0x3f0 [ 84.178370][ T4430] ? __flush_work+0xc1/0x1b0 [ 84.182997][ T4430] ? __lock_acquire+0x7c60/0x7c60 [ 84.188059][ T4430] ? read_lock_is_recursive+0x10/0x10 [ 84.193466][ T4430] ? start_flush_work+0x776/0x820 [ 84.198534][ T4430] ? _raw_spin_unlock_irqrestore+0xaa/0x100 [ 84.204551][ T4430] ? _raw_spin_unlock+0x40/0x40 [ 84.209434][ T4430] __flush_work+0xdd/0x1b0 [ 84.213877][ T4430] ? __flush_work+0xc1/0x1b0 [ 84.218494][ T4430] ? flush_work+0x20/0x20 [ 84.222853][ T4430] ? try_to_grab_pending+0xf3/0x7e0 [ 84.228116][ T4430] ? lockdep_hardirqs_off+0x70/0x100 [ 84.233437][ T4430] ? mark_lock+0x94/0x320 [ 84.237923][ T4430] ? lockdep_hardirqs_on_prepare+0x3fc/0x760 [ 84.243948][ T4430] ? lock_chain_count+0x20/0x20 [ 84.248831][ T4430] ? mark_lock+0x94/0x320 [ 84.253198][ T4430] ? __cancel_work_timer+0x331/0x520 [ 84.258525][ T4430] __cancel_work_timer+0x3ac/0x520 [ 84.263669][ T4430] ? cancel_work_sync+0x20/0x20 [ 84.268588][ T4430] ? __cancel_work+0x1f4/0x2d0 [ 84.273385][ T4430] ? lockdep_hardirqs_on+0x94/0x140 [ 84.278617][ T4430] ? __cancel_work+0x26f/0x2d0 [ 84.283410][ T4430] ? cancel_work+0x20/0x20 [ 84.287851][ T4430] ? lock_chain_count+0x20/0x20 [ 84.292737][ T4430] hci_request_cancel_all+0xcc/0x300 [ 84.298075][ T4430] hci_dev_do_close+0x4e/0x1030 [ 84.302964][ T4430] ? _raw_spin_unlock_irqrestore+0xaa/0x100 [ 84.308889][ T4430] ? _raw_spin_unlock+0x40/0x40 [ 84.313769][ T4430] hci_rfkill_set_block+0x10a/0x190 [ 84.319000][ T4430] ? rcu_lock_release+0x20/0x20 [ 84.323882][ T4430] rfkill_set_block+0x1c6/0x420 [ 84.328763][ T4430] rfkill_fop_write+0x458/0x560 [ 84.333646][ T4430] ? verify_lock_unused+0x140/0x140 [ 84.338876][ T4430] ? rfkill_fop_read+0x4b0/0x4b0 [ 84.343846][ T4430] ? common_file_perm+0xc0/0x1c0 [ 84.348807][ T4430] ? fsnotify_perm+0x5d/0x560 [ 84.353517][ T4430] ? security_file_permission+0x75/0xa0 [ 84.359090][ T4430] ? rfkill_fop_read+0x4b0/0x4b0 [ 84.364057][ T4430] vfs_write+0x300/0xd00 [ 84.368327][ T4430] ? file_end_write+0x250/0x250 [ 84.373208][ T4430] ? __context_tracking_exit+0x4c/0x80 [ 84.378704][ T4430] ? __lock_acquire+0x7c60/0x7c60 [ 84.383760][ T4430] ? __fdget_pos+0x1e2/0x370 [ 84.388378][ T4430] ksys_write+0x14d/0x250 [ 84.392738][ T4430] ? __ia32_sys_read+0x80/0x80 [ 84.397534][ T4430] ? lockdep_hardirqs_on+0x94/0x140 [ 84.402763][ T4430] do_syscall_64+0x4c/0xa0 [ 84.407206][ T4430] ? clear_bhb_loop+0x30/0x80 [ 84.411916][ T4430] ? clear_bhb_loop+0x30/0x80 [ 84.416621][ T4430] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 84.422554][ T4430] RIP: 0033:0x7f1d5531b749 [ 84.426991][ T4430] Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48 [ 84.446624][ T4430] RSP: 002b:00007ffce3278218 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 84.455072][ T4430] RAX: ffffffffffffffda RBX: 00007f1d55571fa0 RCX: 00007f1d5531b749 [ 84.463075][ T4430] RDX: 0000000000000008 RSI: 0000200000000080 RDI: 0000000000000003 [ 84.471078][ T4430] RBP: 00007f1d5539ff91 R08: 0000000000000000 R09: 0000000000000000 [ 84.479081][ T4430] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 84.487083][ T4430] R13: 00007f1d55571fa0 R14: 00007f1d55571fa0 R15: 0000000000000003 [ 84.495093][ T4430] [ 84.500363][ T21] Bluetooth: hci0: command 0x041b tx timeout