Warning: Permanently added '10.128.0.221' (ED25519) to the list of known hosts. 2026/04/26 03:16:30 parsed 1 programs [ 70.468913][ T4188] cgroup: Unknown subsys name 'net' [ 70.626038][ T4188] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size = 127995904 bytes [ 71.313544][ T1422] ieee802154 phy0 wpan0: encryption failed: -22 [ 71.320183][ T1422] ieee802154 phy1 wpan1: encryption failed: -22 [ 72.177456][ T4188] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k FS [ 74.431136][ T4220] chnl_net:caif_netlink_parms(): no params data found [ 74.497826][ T4220] bridge0: port 1(bridge_slave_0) entered blocking state [ 74.505676][ T4220] bridge0: port 1(bridge_slave_0) entered disabled state [ 74.514191][ T4220] device bridge_slave_0 entered promiscuous mode [ 74.524156][ T4220] bridge0: port 2(bridge_slave_1) entered blocking state [ 74.533032][ T4220] bridge0: port 2(bridge_slave_1) entered disabled state [ 74.541300][ T4220] device bridge_slave_1 entered promiscuous mode [ 74.567517][ T4220] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 74.579283][ T4220] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 74.608593][ T4220] team0: Port device team_slave_0 added [ 74.616874][ T4220] team0: Port device team_slave_1 added [ 74.639471][ T4220] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 74.646469][ T4220] 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. [ 74.672441][ T4220] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 74.685908][ T4220] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 74.692973][ T4220] 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. [ 74.719211][ T4220] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 74.762275][ T4220] device hsr_slave_0 entered promiscuous mode [ 74.771513][ T4220] device hsr_slave_1 entered promiscuous mode [ 74.924172][ T4220] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 74.936729][ T4220] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 74.947700][ T4220] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 74.959866][ T4220] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 74.993417][ T4220] bridge0: port 2(bridge_slave_1) entered blocking state [ 75.000735][ T4220] bridge0: port 2(bridge_slave_1) entered forwarding state [ 75.008738][ T4220] bridge0: port 1(bridge_slave_0) entered blocking state [ 75.015970][ T4220] bridge0: port 1(bridge_slave_0) entered forwarding state [ 75.093344][ T4220] 8021q: adding VLAN 0 to HW filter on device bond0 [ 75.113591][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 75.124453][ T154] bridge0: port 1(bridge_slave_0) entered disabled state [ 75.135067][ T154] bridge0: port 2(bridge_slave_1) entered disabled state [ 75.148670][ T4220] 8021q: adding VLAN 0 to HW filter on device team0 [ 75.163130][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 75.171876][ T154] bridge0: port 1(bridge_slave_0) entered blocking state [ 75.179018][ T154] bridge0: port 1(bridge_slave_0) entered forwarding state [ 75.201015][ T475] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 75.212950][ T475] bridge0: port 2(bridge_slave_1) entered blocking state [ 75.220105][ T475] bridge0: port 2(bridge_slave_1) entered forwarding state [ 75.241393][ T475] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 75.251802][ T475] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 75.271211][ T475] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 75.279663][ T475] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 75.288286][ T475] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 75.298927][ T4220] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 75.437578][ T475] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 75.446059][ T475] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 75.463256][ T4220] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 75.492868][ T475] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 75.503550][ T475] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 75.528476][ T475] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 75.538401][ T475] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 75.551279][ T4220] device veth0_vlan entered promiscuous mode [ 75.561516][ T475] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 75.570266][ T475] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 75.582659][ T4220] device veth1_vlan entered promiscuous mode [ 75.611369][ T475] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 75.621495][ T475] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 75.631244][ T475] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 75.640531][ T475] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 75.651391][ T4220] device veth0_macvtap entered promiscuous mode [ 75.664956][ T4220] device veth1_macvtap entered promiscuous mode [ 75.688718][ T4220] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 75.702080][ T475] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 75.711849][ T475] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 75.720563][ T475] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 75.730931][ T475] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 75.741183][ T4220] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 75.750833][ T475] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 75.760538][ T475] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 75.770744][ T4220] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 75.780944][ T4220] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 75.790625][ T4220] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 75.800366][ T4220] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 75.908129][ T4220] syz-executor (4220) used greatest stack depth: 21040 bytes left [ 76.023332][ T9] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 78.598462][ T9] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 80.984967][ T9] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 81.056878][ T9] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 81.499322][ T154] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 81.507423][ T154] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 81.533436][ T4265] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 81.562023][ T4265] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 81.571156][ T4265] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 81.582746][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 82.522151][ T9] device hsr_slave_0 left promiscuous mode [ 82.528926][ T9] device hsr_slave_1 left promiscuous mode [ 82.537694][ T9] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 82.545613][ T9] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 82.555655][ T9] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 82.563947][ T9] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 82.572741][ T9] device bridge_slave_1 left promiscuous mode [ 82.579864][ T9] bridge0: port 2(bridge_slave_1) entered disabled state [ 82.597420][ T9] device bridge_slave_0 left promiscuous mode [ 82.604081][ T9] bridge0: port 1(bridge_slave_0) entered disabled state [ 82.628224][ T9] device veth1_macvtap left promiscuous mode [ 82.634768][ T9] device veth0_macvtap left promiscuous mode [ 82.641412][ T9] device veth1_vlan left promiscuous mode [ 82.647447][ T9] device veth0_vlan left promiscuous mode [ 82.871754][ T9] team0 (unregistering): Port device team_slave_1 removed [ 82.884812][ T9] team0 (unregistering): Port device team_slave_0 removed [ 82.901410][ T9] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 82.917633][ T9] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 82.974782][ T9] bond0 (unregistering): Released all slaves 2026/04/26 03:16:46 executed programs: 0 [ 84.592579][ T4368] chnl_net:caif_netlink_parms(): no params data found [ 84.671548][ T4368] bridge0: port 1(bridge_slave_0) entered blocking state [ 84.689374][ T4368] bridge0: port 1(bridge_slave_0) entered disabled state [ 84.697578][ T4368] device bridge_slave_0 entered promiscuous mode [ 84.724904][ T4368] bridge0: port 2(bridge_slave_1) entered blocking state [ 84.732261][ T4368] bridge0: port 2(bridge_slave_1) entered disabled state [ 84.741006][ T4368] device bridge_slave_1 entered promiscuous mode [ 84.784959][ T4368] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 84.814929][ T4368] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 84.860907][ T4368] team0: Port device team_slave_0 added [ 84.880773][ T4368] team0: Port device team_slave_1 added [ 84.916625][ T4368] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 84.924500][ T4368] 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. [ 84.951556][ T4368] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 84.964693][ T4368] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 84.972095][ T4368] 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. [ 84.998457][ T4368] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 85.065068][ T4368] device hsr_slave_0 entered promiscuous mode [ 85.072278][ T4368] device hsr_slave_1 entered promiscuous mode [ 86.075218][ T4368] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 86.102759][ T4368] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 86.119735][ T4368] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 86.152254][ T4368] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 86.283017][ T4368] 8021q: adding VLAN 0 to HW filter on device bond0 [ 86.311829][ T4265] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 86.330704][ T4265] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 86.346856][ T4368] 8021q: adding VLAN 0 to HW filter on device team0 [ 86.357974][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 86.369460][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 86.378207][ T144] bridge0: port 1(bridge_slave_0) entered blocking state [ 86.385575][ T144] bridge0: port 1(bridge_slave_0) entered forwarding state [ 86.423278][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 86.431094][ T4261] Bluetooth: hci0: command 0x0409 tx timeout [ 86.439574][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 86.448585][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 86.458535][ T144] bridge0: port 2(bridge_slave_1) entered blocking state [ 86.465700][ T144] bridge0: port 2(bridge_slave_1) entered forwarding state [ 86.491016][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 86.501599][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 86.510743][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 86.523316][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 86.532416][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 86.543278][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 86.552542][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 86.562071][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 86.596392][ T4368] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 86.608758][ T4368] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 86.619462][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 86.627665][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 86.636837][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 86.683547][ T1325] cfg80211: failed to load regulatory.db [ 86.910019][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 86.918427][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 87.004771][ T4368] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 87.063563][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 87.076444][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 87.171820][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 87.182263][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 87.213211][ T4368] device veth0_vlan entered promiscuous mode [ 87.222014][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 87.250042][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 87.265686][ T4368] device veth1_vlan entered promiscuous mode [ 87.358342][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 87.372028][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 87.381746][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 87.392036][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 87.408715][ T4368] device veth0_macvtap entered promiscuous mode [ 87.424043][ T4368] device veth1_macvtap entered promiscuous mode [ 87.475752][ T4368] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 87.486223][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 87.495994][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 87.505675][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 87.515489][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 87.530997][ T4368] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 87.539748][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 87.550469][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 87.564269][ T4368] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 87.573748][ T4368] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 87.584371][ T4368] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 87.593469][ T4368] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 87.718972][ T154] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 87.751299][ T154] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 87.759890][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 87.804158][ T154] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 87.812884][ T154] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 87.824139][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 87.988595][ T4471] [ 87.990980][ T4471] ====================================================== [ 87.998196][ T4471] WARNING: possible circular locking dependency detected [ 88.005284][ T4471] syzkaller #0 Not tainted [ 88.009724][ T4471] ------------------------------------------------------ [ 88.016762][ T4471] syz.0.17/4471 is trying to acquire lock: [ 88.022590][ T4471] ffff88807e73cc28 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}, at: __flush_work+0xfa/0x210 [ 88.033733][ T4471] [ 88.033733][ T4471] but task is already holding lock: [ 88.041119][ T4471] ffffffff8d6c5de8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x18b/0x560 [ 88.050821][ T4471] [ 88.050821][ T4471] which lock already depends on the new lock. [ 88.050821][ T4471] [ 88.061337][ T4471] [ 88.061337][ T4471] the existing dependency chain (in reverse order) is: [ 88.070384][ T4471] [ 88.070384][ T4471] -> #4 (rfkill_global_mutex){+.+.}-{3:3}: [ 88.078507][ T4471] __mutex_lock_common+0x1e3/0x2400 [ 88.084263][ T4471] mutex_lock_nested+0x17/0x20 [ 88.089598][ T4471] rfkill_register+0x33/0x980 [ 88.094838][ T4471] hci_register_dev+0x452/0x970 [ 88.100243][ T4471] vhci_create_device+0x32c/0x5c0 [ 88.105829][ T4471] vhci_write+0x391/0x450 [ 88.110711][ T4471] vfs_write+0x745/0xd60 [ 88.115506][ T4471] ksys_write+0x152/0x260 [ 88.120387][ T4471] do_syscall_64+0x4c/0xa0 [ 88.125396][ T4471] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 88.131842][ T4471] [ 88.131842][ T4471] -> #3 (&data->open_mutex){+.+.}-{3:3}: [ 88.139790][ T4471] __mutex_lock_common+0x1e3/0x2400 [ 88.145545][ T4471] mutex_lock_nested+0x17/0x20 [ 88.150863][ T4471] vhci_send_frame+0x88/0x100 [ 88.156085][ T4471] hci_send_frame+0x1a9/0x2e0 [ 88.161296][ T4471] hci_tx_work+0x9f9/0x1710 [ 88.166336][ T4471] process_one_work+0x85f/0x1010 [ 88.171808][ T4471] worker_thread+0xaa6/0x1290 [ 88.177019][ T4471] kthread+0x436/0x520 [ 88.181623][ T4471] ret_from_fork+0x1f/0x30 [ 88.186578][ T4471] [ 88.186578][ T4471] -> #2 ((work_completion)(&hdev->tx_work)){+.+.}-{0:0}: [ 88.195882][ T4471] __flush_work+0x116/0x210 [ 88.200921][ T4471] hci_dev_do_close+0x1e7/0x1030 [ 88.206396][ T4471] hci_unregister_dev+0x2d7/0x580 [ 88.211953][ T4471] vhci_release+0x73/0xc0 [ 88.216819][ T4471] __fput+0x234/0x930 [ 88.221330][ T4471] task_work_run+0x125/0x1a0 [ 88.226454][ T4471] do_exit+0x626/0x20c0 [ 88.231151][ T4471] do_group_exit+0x12e/0x300 [ 88.236278][ T4471] get_signal+0x6ca/0x12c0 [ 88.241224][ T4471] arch_do_signal_or_restart+0xe7/0x12c0 [ 88.247398][ T4471] exit_to_user_mode_loop+0x9e/0x130 [ 88.253215][ T4471] exit_to_user_mode_prepare+0xee/0x180 [ 88.259293][ T4471] syscall_exit_to_user_mode+0x16/0x40 [ 88.265290][ T4471] do_syscall_64+0x58/0xa0 [ 88.270245][ T4471] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 88.276674][ T4471] [ 88.276674][ T4471] -> #1 (&hdev->req_lock){+.+.}-{3:3}: [ 88.284349][ T4471] __mutex_lock_common+0x1e3/0x2400 [ 88.290089][ T4471] mutex_lock_nested+0x17/0x20 [ 88.295480][ T4471] bg_scan_update+0x44/0x3b0 [ 88.300606][ T4471] process_one_work+0x85f/0x1010 [ 88.306082][ T4471] worker_thread+0xaa6/0x1290 [ 88.311289][ T4471] kthread+0x436/0x520 [ 88.315891][ T4471] ret_from_fork+0x1f/0x30 [ 88.320849][ T4471] [ 88.320849][ T4471] -> #0 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}: [ 88.330672][ T4471] __lock_acquire+0x2c42/0x7d10 [ 88.336066][ T4471] lock_acquire+0x19e/0x400 [ 88.341099][ T4471] __flush_work+0x116/0x210 [ 88.346133][ T4471] __cancel_work_timer+0x3f4/0x560 [ 88.351780][ T4471] hci_request_cancel_all+0xcc/0x300 [ 88.357602][ T4471] hci_dev_do_close+0x4e/0x1030 [ 88.362997][ T4471] hci_rfkill_set_block+0x10a/0x190 [ 88.368756][ T4471] rfkill_set_block+0x1c9/0x3d0 [ 88.374173][ T4471] rfkill_fop_write+0x452/0x560 [ 88.379571][ T4471] vfs_write+0x30b/0xd60 [ 88.384361][ T4471] ksys_write+0x152/0x260 [ 88.389229][ T4471] do_syscall_64+0x4c/0xa0 [ 88.394175][ T4471] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 88.400602][ T4471] [ 88.400602][ T4471] other info that might help us debug this: [ 88.400602][ T4471] [ 88.410846][ T4471] Chain exists of: [ 88.410846][ T4471] (work_completion)(&hdev->bg_scan_update) --> &data->open_mutex --> rfkill_global_mutex [ 88.410846][ T4471] [ 88.426588][ T4471] Possible unsafe locking scenario: [ 88.426588][ T4471] [ 88.434044][ T4471] CPU0 CPU1 [ 88.439423][ T4471] ---- ---- [ 88.444805][ T4471] lock(rfkill_global_mutex); [ 88.449582][ T4471] lock(&data->open_mutex); [ 88.456707][ T4471] lock(rfkill_global_mutex); [ 88.464027][ T4471] lock((work_completion)(&hdev->bg_scan_update)); [ 88.470625][ T4471] [ 88.470625][ T4471] *** DEADLOCK *** [ 88.470625][ T4471] [ 88.478781][ T4471] 1 lock held by syz.0.17/4471: [ 88.483641][ T4471] #0: ffffffff8d6c5de8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x18b/0x560 [ 88.493921][ T4471] [ 88.493921][ T4471] stack backtrace: [ 88.499842][ T4471] CPU: 0 PID: 4471 Comm: syz.0.17 Not tainted syzkaller #0 [ 88.507051][ T4471] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 88.517141][ T4471] Call Trace: [ 88.520438][ T4471] [ 88.523386][ T4471] dump_stack_lvl+0x188/0x250 [ 88.528092][ T4471] ? load_image+0x400/0x400 [ 88.532646][ T4471] ? show_regs_print_info+0x20/0x20 [ 88.537897][ T4471] ? print_circular_bug+0x12b/0x1a0 [ 88.543117][ T4471] check_noncircular+0x296/0x330 [ 88.548069][ T4471] ? look_up_lock_class+0x71/0x110 [ 88.553334][ T4471] ? add_chain_block+0x940/0x940 [ 88.558430][ T4471] ? lockdep_lock+0xf1/0x1f0 [ 88.563133][ T4471] ? __lock_acquire+0x12e8/0x7d10 [ 88.568173][ T4471] ? mark_lock+0x94/0x320 [ 88.572695][ T4471] __lock_acquire+0x2c42/0x7d10 [ 88.577625][ T4471] ? verify_lock_unused+0x140/0x140 [ 88.583038][ T4471] ? verify_lock_unused+0x140/0x140 [ 88.588707][ T4471] ? mark_lock+0x94/0x320 [ 88.593076][ T4471] lock_acquire+0x19e/0x400 [ 88.597600][ T4471] ? __flush_work+0xfa/0x210 [ 88.602214][ T4471] ? __lock_acquire+0x7d10/0x7d10 [ 88.607262][ T4471] ? read_lock_is_recursive+0x10/0x10 [ 88.612668][ T4471] ? start_flush_work+0x776/0x820 [ 88.617712][ T4471] __flush_work+0x116/0x210 [ 88.622242][ T4471] ? __flush_work+0xfa/0x210 [ 88.626971][ T4471] ? flush_work+0x20/0x20 [ 88.631346][ T4471] ? try_to_grab_pending+0xfa/0x7f0 [ 88.636580][ T4471] ? mark_lock+0x94/0x320 [ 88.641010][ T4471] ? lockdep_hardirqs_on_prepare+0x409/0x770 [ 88.647013][ T4471] ? lock_chain_count+0x20/0x20 [ 88.651882][ T4471] ? mark_lock+0x94/0x320 [ 88.656231][ T4471] ? __cancel_work_timer+0x36a/0x560 [ 88.661532][ T4471] __cancel_work_timer+0x3f4/0x560 [ 88.666657][ T4471] ? cancel_work_sync+0x20/0x20 [ 88.671523][ T4471] ? __cancel_work+0x1f9/0x2e0 [ 88.676298][ T4471] ? lockdep_hardirqs_on+0x94/0x140 [ 88.681516][ T4471] ? __cancel_work+0x27b/0x2e0 [ 88.686295][ T4471] ? cancel_work+0x20/0x20 [ 88.690809][ T4471] ? lock_chain_count+0x20/0x20 [ 88.695687][ T4471] hci_request_cancel_all+0xcc/0x300 [ 88.700988][ T4471] hci_dev_do_close+0x4e/0x1030 [ 88.705851][ T4471] ? _raw_spin_unlock_irqrestore+0xc1/0x120 [ 88.711775][ T4471] ? _raw_spin_unlock+0x40/0x40 [ 88.716639][ T4471] hci_rfkill_set_block+0x10a/0x190 [ 88.721853][ T4471] ? rcu_lock_release+0x20/0x20 [ 88.726722][ T4471] rfkill_set_block+0x1c9/0x3d0 [ 88.731593][ T4471] rfkill_fop_write+0x452/0x560 [ 88.736457][ T4471] ? rfkill_fop_read+0x520/0x520 [ 88.741411][ T4471] ? common_file_perm+0x140/0x1c0 [ 88.746454][ T4471] ? fsnotify_perm+0x5d/0x560 [ 88.751147][ T4471] ? security_file_permission+0x75/0xa0 [ 88.757043][ T4471] ? rfkill_fop_read+0x520/0x520 [ 88.762022][ T4471] vfs_write+0x30b/0xd60 [ 88.766285][ T4471] ? file_end_write+0x250/0x250 [ 88.771150][ T4471] ? __context_tracking_exit+0x4c/0x80 [ 88.777233][ T4471] ? __lock_acquire+0x7d10/0x7d10 [ 88.782284][ T4471] ? __fdget_pos+0x1e2/0x370 [ 88.786912][ T4471] ksys_write+0x152/0x260 [ 88.791261][ T4471] ? __ia32_sys_read+0x80/0x80 [ 88.796036][ T4471] ? lockdep_hardirqs_on+0x94/0x140 [ 88.801251][ T4471] do_syscall_64+0x4c/0xa0 [ 88.805691][ T4471] ? clear_bhb_loop+0x30/0x80 [ 88.810401][ T4471] ? clear_bhb_loop+0x30/0x80 [ 88.815091][ T4471] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 88.821006][ T4471] RIP: 0033:0x7f1adf407dd9 [ 88.825440][ T4471] 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 [ 88.845065][ T4471] RSP: 002b:00007fffee8a41c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 88.853493][ T4471] RAX: ffffffffffffffda RBX: 00007f1adf680fa0 RCX: 00007f1adf407dd9 [ 88.861483][ T4471] RDX: 0000000000000008 RSI: 0000200000000600 RDI: 0000000000000003 [ 88.869475][ T4471] RBP: 00007f1adf49dd69 R08: 0000000000000000 R09: 0000000000000000 [ 88.877489][ T4471] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 88.885469][ T4471] R13: 00007f1adf680fac R14: 00007f1adf680fa0 R15: 00007f1adf680fa0 [ 88.893557][ T4471] [ 88.932951][ T21] Bluetooth: hci0: command 0x041b tx timeout