Warning: Permanently added '10.128.0.146' (ED25519) to the list of known hosts. 2026/05/30 13:59:19 parsed 1 programs [ 86.228745][ T4208] cgroup: Unknown subsys name 'net' [ 86.348805][ T4208] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size = 127995904 bytes [ 88.407314][ T4208] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k FS [ 92.164278][ T1347] cfg80211: failed to load regulatory.db [ 93.028221][ T4282] syz-executor (4282) used greatest stack depth: 21072 bytes left [ 93.219419][ T4287] chnl_net:caif_netlink_parms(): no params data found [ 93.303135][ T4287] bridge0: port 1(bridge_slave_0) entered blocking state [ 93.317578][ T4287] bridge0: port 1(bridge_slave_0) entered disabled state [ 93.331836][ T4287] device bridge_slave_0 entered promiscuous mode [ 93.345866][ T4287] bridge0: port 2(bridge_slave_1) entered blocking state [ 93.362991][ T4287] bridge0: port 2(bridge_slave_1) entered disabled state [ 93.374431][ T4287] device bridge_slave_1 entered promiscuous mode [ 93.428013][ T4287] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 93.443654][ T4287] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 93.478557][ T4287] team0: Port device team_slave_0 added [ 93.507510][ T4287] team0: Port device team_slave_1 added [ 93.528271][ T4287] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 93.539859][ T4287] 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. [ 93.575503][ T4287] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 93.589441][ T4287] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 93.597667][ T4287] 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. [ 93.629967][ T4287] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 93.670407][ T4287] device hsr_slave_0 entered promiscuous mode [ 93.681102][ T4287] device hsr_slave_1 entered promiscuous mode [ 93.861485][ T4287] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 93.877533][ T4287] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 93.890476][ T4287] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 93.904355][ T4287] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 93.940936][ T4287] bridge0: port 2(bridge_slave_1) entered blocking state [ 93.951890][ T4287] bridge0: port 2(bridge_slave_1) entered forwarding state [ 93.966761][ T4287] bridge0: port 1(bridge_slave_0) entered blocking state [ 93.976369][ T4287] bridge0: port 1(bridge_slave_0) entered forwarding state [ 93.995084][ T154] bridge0: port 1(bridge_slave_0) entered disabled state [ 94.007872][ T154] bridge0: port 2(bridge_slave_1) entered disabled state [ 94.082882][ T4287] 8021q: adding VLAN 0 to HW filter on device bond0 [ 94.103627][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 94.125689][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 94.142252][ T4287] 8021q: adding VLAN 0 to HW filter on device team0 [ 94.161097][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 94.175299][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 94.187718][ T154] bridge0: port 1(bridge_slave_0) entered blocking state [ 94.198580][ T154] bridge0: port 1(bridge_slave_0) entered forwarding state [ 94.231750][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 94.246784][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 94.263204][ T154] bridge0: port 2(bridge_slave_1) entered blocking state [ 94.275429][ T154] bridge0: port 2(bridge_slave_1) entered forwarding state [ 94.289569][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 94.306680][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 94.339873][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 94.353771][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 94.367136][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 94.401446][ T1262] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 94.412246][ T1262] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 94.423998][ T1262] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 94.441092][ T1262] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 94.454755][ T1262] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 94.468100][ T1262] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 94.483346][ T4287] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 94.703398][ T1262] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 94.715219][ T1262] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 94.736699][ T4287] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 94.788762][ T1262] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 94.808998][ T1262] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 94.844809][ T1262] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 94.856300][ T1262] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 94.872331][ T1262] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 94.885207][ T1262] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 94.897380][ T4287] device veth0_vlan entered promiscuous mode [ 94.927791][ T4287] device veth1_vlan entered promiscuous mode [ 94.959389][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 94.975790][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 94.987896][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 95.002068][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 95.032665][ T4287] device veth0_macvtap entered promiscuous mode [ 95.052113][ T4287] device veth1_macvtap entered promiscuous mode [ 95.085289][ T4287] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 95.099550][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 95.117844][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 95.133924][ T4287] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 95.148288][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 95.163753][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 95.185827][ T4287] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 95.202637][ T4287] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 95.213783][ T4287] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 95.227163][ T4287] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 95.423543][ T4287] syz-executor (4287) used greatest stack depth: 20272 bytes left [ 95.557866][ T154] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 95.580691][ T154] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 95.606750][ T1262] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 95.634892][ T1262] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 95.646431][ T1262] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 95.657843][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 96.153829][ T9] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 2026/05/30 13:59:32 executed programs: 0 [ 96.540704][ T4307] chnl_net:caif_netlink_parms(): no params data found [ 96.603505][ T4307] bridge0: port 1(bridge_slave_0) entered blocking state [ 96.612368][ T4307] bridge0: port 1(bridge_slave_0) entered disabled state [ 96.624165][ T4307] device bridge_slave_0 entered promiscuous mode [ 96.633937][ T4307] bridge0: port 2(bridge_slave_1) entered blocking state [ 96.641637][ T4307] bridge0: port 2(bridge_slave_1) entered disabled state [ 96.651627][ T4307] device bridge_slave_1 entered promiscuous mode [ 96.679425][ T4307] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 96.693651][ T4307] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 96.724776][ T4307] team0: Port device team_slave_0 added [ 96.735320][ T4307] team0: Port device team_slave_1 added [ 96.759131][ T4307] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 96.767602][ T4307] 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. [ 96.799873][ T4307] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 96.813631][ T4307] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 96.822620][ T4307] 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. [ 96.855533][ T4307] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 96.894331][ T4307] device hsr_slave_0 entered promiscuous mode [ 96.903639][ T4307] device hsr_slave_1 entered promiscuous mode [ 96.912079][ T4307] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 96.920855][ T4307] Cannot create hsr debugfs directory [ 98.369498][ T9] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 98.471333][ T13] Bluetooth: hci0: command 0x0409 tx timeout [ 99.687844][ T9] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 99.730085][ T9] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 100.560360][ T4326] Bluetooth: hci0: command 0x041b tx timeout [ 100.749796][ T4307] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 100.785050][ T4307] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 100.807454][ T4307] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 100.822969][ T4307] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 100.978414][ T4307] 8021q: adding VLAN 0 to HW filter on device bond0 [ 100.998077][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 101.011360][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 101.028427][ T4307] 8021q: adding VLAN 0 to HW filter on device team0 [ 101.069070][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 101.083166][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 101.095345][ T154] bridge0: port 1(bridge_slave_0) entered blocking state [ 101.103612][ T154] bridge0: port 1(bridge_slave_0) entered forwarding state [ 101.114898][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 101.147251][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 101.158403][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 101.167540][ T154] bridge0: port 2(bridge_slave_1) entered blocking state [ 101.174669][ T154] bridge0: port 2(bridge_slave_1) entered forwarding state [ 101.209098][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 101.223370][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 101.234558][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 101.246131][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 101.260931][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 101.274514][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 101.284937][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 101.328601][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 101.341585][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 101.357387][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 101.368250][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 101.385481][ T4307] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 101.515400][ T9] device hsr_slave_0 left promiscuous mode [ 101.526195][ T9] device hsr_slave_1 left promiscuous mode [ 101.534433][ T9] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 101.543658][ T9] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 101.558033][ T9] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 101.567223][ T9] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 101.576819][ T9] device bridge_slave_1 left promiscuous mode [ 101.587345][ T9] bridge0: port 2(bridge_slave_1) entered disabled state [ 101.608674][ T9] device bridge_slave_0 left promiscuous mode [ 101.616296][ T9] bridge0: port 1(bridge_slave_0) entered disabled state [ 101.639239][ T9] device veth1_macvtap left promiscuous mode [ 101.648052][ T9] device veth0_macvtap left promiscuous mode [ 101.666361][ T9] device veth1_vlan left promiscuous mode [ 101.674456][ T9] device veth0_vlan left promiscuous mode [ 101.900498][ T9] team0 (unregistering): Port device team_slave_1 removed [ 101.924740][ T9] team0 (unregistering): Port device team_slave_0 removed [ 101.945616][ T9] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 101.964234][ T9] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 102.041644][ T9] bond0 (unregistering): Released all slaves [ 102.131334][ T4307] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 102.144235][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 102.154288][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 102.182691][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 102.194529][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 102.223469][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 102.234764][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 102.248890][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 102.259747][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 102.273690][ T4307] device veth0_vlan entered promiscuous mode [ 102.287170][ T4307] device veth1_vlan entered promiscuous mode [ 102.323355][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 102.343851][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 102.361965][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 102.375954][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 102.393564][ T4307] device veth0_macvtap entered promiscuous mode [ 102.413088][ T4307] device veth1_macvtap entered promiscuous mode [ 102.437498][ T4307] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 102.447659][ T1262] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 102.458877][ T1262] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 102.471878][ T1262] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 102.483389][ T1262] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 102.500478][ T4307] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 102.516246][ T1262] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 102.526372][ T1262] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 102.543462][ T4307] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 102.556157][ T4307] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 102.567431][ T4307] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 102.576919][ T4307] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 102.632374][ T4328] Bluetooth: hci0: command 0x040f tx timeout [ 102.663128][ T155] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 102.676611][ T155] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 102.703655][ T1262] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 102.724994][ T1262] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 102.735443][ T1262] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 102.747847][ T4358] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 102.906602][ T4359] [ 102.909013][ T4359] ====================================================== [ 102.917328][ T4359] WARNING: possible circular locking dependency detected [ 102.925389][ T4359] syzkaller #0 Not tainted [ 102.930003][ T4359] ------------------------------------------------------ [ 102.938469][ T4359] syz.0.17/4359 is trying to acquire lock: [ 102.946858][ T4359] ffff8880774f4c28 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}, at: __flush_work+0xfa/0x210 [ 102.962506][ T4359] [ 102.962506][ T4359] but task is already holding lock: [ 102.970704][ T4359] ffffffff8d6c65a8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x18b/0x560 [ 102.982603][ T4359] [ 102.982603][ T4359] which lock already depends on the new lock. [ 102.982603][ T4359] [ 102.996428][ T4359] [ 102.996428][ T4359] the existing dependency chain (in reverse order) is: [ 103.011085][ T4359] [ 103.011085][ T4359] -> #4 (rfkill_global_mutex){+.+.}-{3:3}: [ 103.019629][ T4359] __mutex_lock_common+0x1e3/0x2400 [ 103.025796][ T4359] mutex_lock_nested+0x17/0x20 [ 103.031113][ T4359] rfkill_register+0x33/0x980 [ 103.036650][ T4359] hci_register_dev+0x452/0x970 [ 103.042261][ T4359] vhci_create_device+0x32c/0x5c0 [ 103.048164][ T4359] vhci_write+0x391/0x450 [ 103.053979][ T4359] vfs_write+0x745/0xd60 [ 103.059913][ T4359] ksys_write+0x152/0x260 [ 103.065986][ T4359] do_syscall_64+0x4c/0xa0 [ 103.072783][ T4359] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 103.080876][ T4359] [ 103.080876][ T4359] -> #3 (&data->open_mutex){+.+.}-{3:3}: [ 103.090088][ T4359] __mutex_lock_common+0x1e3/0x2400 [ 103.096847][ T4359] mutex_lock_nested+0x17/0x20 [ 103.103053][ T4359] vhci_send_frame+0x88/0x100 [ 103.108752][ T4359] hci_send_frame+0x1a9/0x2e0 [ 103.114127][ T4359] hci_tx_work+0x9f9/0x1710 [ 103.120411][ T4359] process_one_work+0x85f/0x1010 [ 103.126189][ T4359] worker_thread+0xaa6/0x1290 [ 103.132397][ T4359] kthread+0x436/0x520 [ 103.137127][ T4359] ret_from_fork+0x1f/0x30 [ 103.142395][ T4359] [ 103.142395][ T4359] -> #2 ((work_completion)(&hdev->tx_work)){+.+.}-{0:0}: [ 103.152039][ T4359] __flush_work+0x116/0x210 [ 103.157716][ T4359] hci_dev_do_close+0x1e7/0x1030 [ 103.163543][ T4359] hci_unregister_dev+0x2d7/0x580 [ 103.169690][ T4359] vhci_release+0x73/0xc0 [ 103.175052][ T4359] __fput+0x234/0x930 [ 103.180648][ T4359] task_work_run+0x125/0x1a0 [ 103.186244][ T4359] do_exit+0x626/0x20c0 [ 103.191066][ T4359] do_group_exit+0x12e/0x300 [ 103.196623][ T4359] get_signal+0x6d6/0x12d0 [ 103.203228][ T4359] arch_do_signal_or_restart+0xe7/0x12c0 [ 103.211961][ T4359] exit_to_user_mode_loop+0x9e/0x130 [ 103.220857][ T4359] exit_to_user_mode_prepare+0xee/0x180 [ 103.229825][ T4359] syscall_exit_to_user_mode+0x16/0x40 [ 103.236913][ T4359] do_syscall_64+0x58/0xa0 [ 103.242917][ T4359] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 103.251608][ T4359] [ 103.251608][ T4359] -> #1 (&hdev->req_lock){+.+.}-{3:3}: [ 103.260712][ T4359] __mutex_lock_common+0x1e3/0x2400 [ 103.267116][ T4359] mutex_lock_nested+0x17/0x20 [ 103.273588][ T4359] bg_scan_update+0x44/0x3b0 [ 103.279565][ T4359] process_one_work+0x85f/0x1010 [ 103.285457][ T4359] worker_thread+0xaa6/0x1290 [ 103.293536][ T4359] kthread+0x436/0x520 [ 103.300074][ T4359] ret_from_fork+0x1f/0x30 [ 103.307201][ T4359] [ 103.307201][ T4359] -> #0 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}: [ 103.318698][ T4359] __lock_acquire+0x2c42/0x7d10 [ 103.326078][ T4359] lock_acquire+0x19e/0x400 [ 103.333072][ T4359] __flush_work+0x116/0x210 [ 103.338758][ T4359] __cancel_work_timer+0x3f4/0x560 [ 103.346024][ T4359] hci_request_cancel_all+0xcc/0x300 [ 103.353742][ T4359] hci_dev_do_close+0x4e/0x1030 [ 103.360089][ T4359] hci_rfkill_set_block+0x10a/0x190 [ 103.366187][ T4359] rfkill_set_block+0x1c9/0x3d0 [ 103.373024][ T4359] rfkill_fop_write+0x452/0x560 [ 103.379123][ T4359] do_iter_write+0x3e4/0x7b0 [ 103.385830][ T4359] do_writev+0x281/0x480 [ 103.391009][ T4359] do_syscall_64+0x4c/0xa0 [ 103.396600][ T4359] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 103.403980][ T4359] [ 103.403980][ T4359] other info that might help us debug this: [ 103.403980][ T4359] [ 103.415595][ T4359] Chain exists of: [ 103.415595][ T4359] (work_completion)(&hdev->bg_scan_update) --> &data->open_mutex --> rfkill_global_mutex [ 103.415595][ T4359] [ 103.435762][ T4359] Possible unsafe locking scenario: [ 103.435762][ T4359] [ 103.447920][ T4359] CPU0 CPU1 [ 103.455029][ T4359] ---- ---- [ 103.462051][ T4359] lock(rfkill_global_mutex); [ 103.469843][ T4359] lock(&data->open_mutex); [ 103.480393][ T4359] lock(rfkill_global_mutex); [ 103.491566][ T4359] lock((work_completion)(&hdev->bg_scan_update)); [ 103.502077][ T4359] [ 103.502077][ T4359] *** DEADLOCK *** [ 103.502077][ T4359] [ 103.513026][ T4359] 1 lock held by syz.0.17/4359: [ 103.519250][ T4359] #0: ffffffff8d6c65a8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x18b/0x560 [ 103.533309][ T4359] [ 103.533309][ T4359] stack backtrace: [ 103.542286][ T4359] CPU: 1 PID: 4359 Comm: syz.0.17 Not tainted syzkaller #0 [ 103.557044][ T4359] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 103.571697][ T4359] Call Trace: [ 103.578185][ T4359] [ 103.583379][ T4359] dump_stack_lvl+0x188/0x250 [ 103.590194][ T4359] ? load_image+0x400/0x400 [ 103.595289][ T4359] ? show_regs_print_info+0x20/0x20 [ 103.601510][ T4359] ? print_circular_bug+0x12b/0x1a0 [ 103.607358][ T4359] check_noncircular+0x296/0x330 [ 103.613033][ T4359] ? look_up_lock_class+0x71/0x110 [ 103.620435][ T4359] ? add_chain_block+0x940/0x940 [ 103.626586][ T4359] ? lockdep_lock+0xf1/0x1f0 [ 103.631686][ T4359] ? __lock_acquire+0x12e8/0x7d10 [ 103.637824][ T4359] ? mark_lock+0x94/0x320 [ 103.644376][ T4359] __lock_acquire+0x2c42/0x7d10 [ 103.650208][ T4359] ? verify_lock_unused+0x140/0x140 [ 103.657289][ T4359] ? verify_lock_unused+0x140/0x140 [ 103.663236][ T4359] ? mark_lock+0x94/0x320 [ 103.668498][ T4359] lock_acquire+0x19e/0x400 [ 103.675046][ T4359] ? __flush_work+0xfa/0x210 [ 103.682408][ T4359] ? __lock_acquire+0x7d10/0x7d10 [ 103.689920][ T4359] ? read_lock_is_recursive+0x10/0x10 [ 103.696322][ T4359] ? start_flush_work+0x776/0x820 [ 103.702761][ T4359] __flush_work+0x116/0x210 [ 103.707727][ T4359] ? __flush_work+0xfa/0x210 [ 103.713604][ T4359] ? flush_work+0x20/0x20 [ 103.719970][ T4359] ? try_to_grab_pending+0xfa/0x7f0 [ 103.727539][ T4359] ? mark_lock+0x94/0x320 [ 103.736261][ T4359] ? lockdep_hardirqs_on_prepare+0x409/0x770 [ 103.746149][ T4359] ? lock_chain_count+0x20/0x20 [ 103.753321][ T4359] ? mark_lock+0x94/0x320 [ 103.759658][ T4359] ? __cancel_work_timer+0x36a/0x560 [ 103.766445][ T4359] __cancel_work_timer+0x3f4/0x560 [ 103.773856][ T4359] ? cancel_work_sync+0x20/0x20 [ 103.780074][ T4359] ? __cancel_work+0x1f9/0x2e0 [ 103.789598][ T4359] ? lockdep_hardirqs_on+0x94/0x140 [ 103.797626][ T4359] ? __cancel_work+0x27b/0x2e0 [ 103.803395][ T4359] ? cancel_work+0x20/0x20 [ 103.808974][ T4359] ? lock_chain_count+0x20/0x20 [ 103.817892][ T4359] hci_request_cancel_all+0xcc/0x300 [ 103.827304][ T4359] hci_dev_do_close+0x4e/0x1030 [ 103.834943][ T4359] ? _raw_spin_unlock_irqrestore+0xc1/0x120 [ 103.842256][ T4359] ? _raw_spin_unlock+0x40/0x40 [ 103.849994][ T4359] hci_rfkill_set_block+0x10a/0x190 [ 103.856752][ T4359] ? rcu_lock_release+0x20/0x20 [ 103.863669][ T4359] rfkill_set_block+0x1c9/0x3d0 [ 103.869208][ T4359] rfkill_fop_write+0x452/0x560 [ 103.874262][ T4359] ? _copy_from_user+0x111/0x170 [ 103.883847][ T4359] ? rfkill_fop_read+0x520/0x520 [ 103.895870][ T4359] ? common_file_perm+0x171/0x1c0 [ 103.901565][ T4359] ? fsnotify_perm+0x5d/0x560 [ 103.908565][ T4359] ? security_file_permission+0x75/0xa0 [ 103.920641][ T4359] do_iter_write+0x3e4/0x7b0 [ 103.926516][ T4359] do_writev+0x281/0x480 [ 103.931666][ T4359] ? do_readv+0x460/0x460 [ 103.936265][ T4359] ? lockdep_hardirqs_on_prepare+0x409/0x770 [ 103.943805][ T4359] ? lock_chain_count+0x20/0x20 [ 103.951590][ T4359] ? vtime_user_exit+0x2c8/0x3e0 [ 103.958361][ T4359] ? lockdep_hardirqs_on+0x94/0x140 [ 103.966288][ T4359] do_syscall_64+0x4c/0xa0 [ 103.972014][ T4359] ? clear_bhb_loop+0x30/0x80 [ 103.979173][ T4359] ? clear_bhb_loop+0x30/0x80 [ 103.985591][ T4359] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 103.993798][ T4359] RIP: 0033:0x7fd6be7cfe59 [ 104.001536][ T4359] 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 [ 104.029677][ T4359] RSP: 002b:00007fff89e624b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000014 [ 104.044377][ T4359] RAX: ffffffffffffffda RBX: 00007fd6bea48fa0 RCX: 00007fd6be7cfe59 [ 104.055709][ T4359] RDX: 0000000000000001 RSI: 0000200000000080 RDI: 0000000000000003 [ 104.069106][ T4359] RBP: 00007fd6be865d6f R08: 0000000000000000 R09: 0000000000000000 [ 104.085380][ T4359] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 104.095858][ T4359] R13: 00007fd6bea48fac R14: 00007fd6bea48fa0 R15: 00007fd6bea48fa0 [ 104.107851][ T4359]