Warning: Permanently added '10.128.0.195' (ED25519) to the list of known hosts. 2026/04/05 03:52:55 parsed 1 programs [ 68.237463][ T4188] cgroup: Unknown subsys name 'net' [ 68.370828][ T4188] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size = 127995904 bytes [ 69.842188][ T4188] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k FS [ 71.599748][ T1432] ieee802154 phy0 wpan0: encryption failed: -22 [ 71.606928][ T1432] ieee802154 phy1 wpan1: encryption failed: -22 [ 72.284276][ T4219] chnl_net:caif_netlink_parms(): no params data found [ 72.352807][ T4219] bridge0: port 1(bridge_slave_0) entered blocking state [ 72.362023][ T4219] bridge0: port 1(bridge_slave_0) entered disabled state [ 72.370855][ T4219] device bridge_slave_0 entered promiscuous mode [ 72.382335][ T4219] bridge0: port 2(bridge_slave_1) entered blocking state [ 72.389904][ T4219] bridge0: port 2(bridge_slave_1) entered disabled state [ 72.399865][ T4219] device bridge_slave_1 entered promiscuous mode [ 72.433871][ T4219] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 72.446742][ T4219] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 72.478447][ T4219] team0: Port device team_slave_0 added [ 72.486665][ T4219] team0: Port device team_slave_1 added [ 72.510358][ T4219] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 72.517483][ T4219] 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. [ 72.543798][ T4219] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 72.557457][ T4219] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 72.564601][ T4219] 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. [ 72.592548][ T4219] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 72.632549][ T4219] device hsr_slave_0 entered promiscuous mode [ 72.640853][ T4219] device hsr_slave_1 entered promiscuous mode [ 72.790199][ T4219] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 72.804301][ T4219] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 72.817790][ T4219] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 72.828406][ T4219] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 72.864414][ T4219] bridge0: port 2(bridge_slave_1) entered blocking state [ 72.872242][ T4219] bridge0: port 2(bridge_slave_1) entered forwarding state [ 72.880985][ T4219] bridge0: port 1(bridge_slave_0) entered blocking state [ 72.888584][ T4219] bridge0: port 1(bridge_slave_0) entered forwarding state [ 72.957997][ T4219] 8021q: adding VLAN 0 to HW filter on device bond0 [ 72.977306][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 72.989192][ T154] bridge0: port 1(bridge_slave_0) entered disabled state [ 72.998862][ T154] bridge0: port 2(bridge_slave_1) entered disabled state [ 73.010496][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 73.024570][ T4219] 8021q: adding VLAN 0 to HW filter on device team0 [ 73.039216][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 73.048958][ T154] bridge0: port 1(bridge_slave_0) entered blocking state [ 73.056844][ T154] bridge0: port 1(bridge_slave_0) entered forwarding state [ 73.070845][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 73.079901][ T154] bridge0: port 2(bridge_slave_1) entered blocking state [ 73.087024][ T154] bridge0: port 2(bridge_slave_1) entered forwarding state [ 73.110607][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 73.120142][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 73.137538][ T1166] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 73.149249][ T1166] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 73.162226][ T1166] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 73.178477][ T4219] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 73.302132][ T1166] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 73.310819][ T1166] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 73.327098][ T4219] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 73.351389][ T1166] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 73.365428][ T1166] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 73.389706][ T1166] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 73.400993][ T1166] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 73.420697][ T1166] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 73.430618][ T1166] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 73.462650][ T4219] device veth0_vlan entered promiscuous mode [ 73.482299][ T4219] device veth1_vlan entered promiscuous mode [ 73.502939][ T1166] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 73.511978][ T1166] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 73.521274][ T1166] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 73.530303][ T1166] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 73.542023][ T4219] device veth0_macvtap entered promiscuous mode [ 73.552619][ T4219] device veth1_macvtap entered promiscuous mode [ 73.567811][ T4219] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 73.576221][ T1166] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 73.584373][ T1166] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 73.593390][ T1166] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 73.603691][ T1166] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 73.615449][ T4219] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 73.632473][ T1166] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 73.642122][ T1166] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 73.653980][ T4219] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 73.666580][ T4219] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 73.679015][ T4219] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 73.691964][ T4219] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 73.808802][ T4219] syz-executor (4219) used greatest stack depth: 20240 bytes left [ 74.060744][ T1166] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 74.071348][ T1166] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 74.082850][ T4226] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 74.110848][ T154] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 74.118982][ T154] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 74.128429][ T4226] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 76.038468][ T144] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 2026/04/05 03:53:05 executed programs: 0 [ 76.232413][ T4285] chnl_net:caif_netlink_parms(): no params data found [ 76.277198][ T4285] bridge0: port 1(bridge_slave_0) entered blocking state [ 76.284622][ T4285] bridge0: port 1(bridge_slave_0) entered disabled state [ 76.292928][ T4285] device bridge_slave_0 entered promiscuous mode [ 76.301392][ T4285] bridge0: port 2(bridge_slave_1) entered blocking state [ 76.309178][ T4285] bridge0: port 2(bridge_slave_1) entered disabled state [ 76.317071][ T4285] device bridge_slave_1 entered promiscuous mode [ 76.336844][ T4285] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 76.348462][ T4285] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 76.370260][ T4285] team0: Port device team_slave_0 added [ 76.378265][ T4285] team0: Port device team_slave_1 added [ 76.393997][ T4285] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 76.401063][ 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. [ 76.429338][ T4285] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 76.441768][ T4285] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 76.448945][ 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. [ 76.479300][ T4285] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 76.507788][ T4285] device hsr_slave_0 entered promiscuous mode [ 76.514708][ T4285] device hsr_slave_1 entered promiscuous mode [ 76.522002][ T4285] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 76.530445][ T4285] Cannot create hsr debugfs directory [ 78.236028][ T4225] Bluetooth: hci0: command 0x0409 tx timeout [ 78.422029][ T144] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 78.471842][ T144] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 78.513246][ T144] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 79.393017][ T4285] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 79.404143][ T4285] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 79.414319][ T4285] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 79.424131][ T4285] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 79.492535][ T4285] 8021q: adding VLAN 0 to HW filter on device bond0 [ 79.528569][ T1166] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 79.536799][ T1166] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 79.548470][ T4285] 8021q: adding VLAN 0 to HW filter on device team0 [ 79.560227][ T1166] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 79.569915][ T1166] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 79.579566][ T1166] bridge0: port 1(bridge_slave_0) entered blocking state [ 79.586910][ T1166] bridge0: port 1(bridge_slave_0) entered forwarding state [ 79.596530][ T1166] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 79.612844][ T4226] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 79.622110][ T4226] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 79.631014][ T4226] bridge0: port 2(bridge_slave_1) entered blocking state [ 79.638198][ T4226] bridge0: port 2(bridge_slave_1) entered forwarding state [ 79.660843][ T4226] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 79.670933][ T4226] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 79.681140][ T4226] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 79.692536][ T4226] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 79.703419][ T4226] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 79.715812][ T1166] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 79.725625][ T1166] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 79.751822][ T1166] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 79.760782][ T1166] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 79.774066][ T4226] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 79.783654][ T4226] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 79.794880][ T4285] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 79.928729][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 79.936877][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 79.949415][ T4285] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 79.988315][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 79.998690][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 80.036252][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 80.044735][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 80.054328][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 80.062256][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 80.071101][ T4285] device veth0_vlan entered promiscuous mode [ 80.101071][ T4285] device veth1_vlan entered promiscuous mode [ 80.120294][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 80.129771][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 80.138344][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 80.149585][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 80.160219][ T4285] device veth0_macvtap entered promiscuous mode [ 80.173375][ T4285] device veth1_macvtap entered promiscuous mode [ 80.213738][ T4285] batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3e) already exists on: batadv_slave_0 [ 80.225580][ T4285] batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems! [ 80.237923][ T4285] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 80.249474][ T1166] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 80.258403][ T1166] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 80.267136][ T1166] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 80.276697][ T1166] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 80.287151][ T4285] batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3f) already exists on: batadv_slave_1 [ 80.298373][ T4285] batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems! [ 80.305230][ T4333] Bluetooth: hci0: command 0x041b tx timeout [ 80.309909][ T4285] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 80.326296][ T1166] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 80.338317][ T1166] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 80.349801][ T4285] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 80.359770][ T4285] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 80.368826][ T4285] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 80.378061][ T4285] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 80.398514][ T144] device hsr_slave_0 left promiscuous mode [ 80.406114][ T144] device hsr_slave_1 left promiscuous mode [ 80.412762][ T144] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 80.422159][ T144] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 80.431792][ T144] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 80.439592][ T144] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 80.447348][ T144] device bridge_slave_1 left promiscuous mode [ 80.454657][ T144] bridge0: port 2(bridge_slave_1) entered disabled state [ 80.469459][ T144] device bridge_slave_0 left promiscuous mode [ 80.478395][ T144] bridge0: port 1(bridge_slave_0) entered disabled state [ 80.494456][ T144] device veth1_macvtap left promiscuous mode [ 80.501535][ T144] device veth0_macvtap left promiscuous mode [ 80.508418][ T144] device veth1_vlan left promiscuous mode [ 80.514741][ T144] device veth0_vlan left promiscuous mode [ 80.679377][ T144] team0 (unregistering): Port device team_slave_1 removed [ 80.693856][ T144] team0 (unregistering): Port device team_slave_0 removed [ 80.710461][ T144] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 80.725792][ T144] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 80.780162][ T144] bond0 (unregistering): Released all slaves [ 80.888036][ T154] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 80.899488][ T154] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 80.913719][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 80.937822][ T154] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 80.946541][ T154] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 80.955717][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 81.084941][ T4335] [ 81.087329][ T4335] ====================================================== [ 81.094706][ T4335] WARNING: possible circular locking dependency detected [ 81.102017][ T4335] syzkaller #0 Not tainted [ 81.106657][ T4335] ------------------------------------------------------ [ 81.113702][ T4335] syz.0.17/4335 is trying to acquire lock: [ 81.119786][ T4335] ffff888022d3cc28 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}, at: __flush_work+0xfa/0x210 [ 81.131451][ T4335] [ 81.131451][ T4335] but task is already holding lock: [ 81.139216][ T4335] ffffffff8d6c51a8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x18b/0x560 [ 81.149470][ T4335] [ 81.149470][ T4335] which lock already depends on the new lock. [ 81.149470][ T4335] [ 81.160318][ T4335] [ 81.160318][ T4335] the existing dependency chain (in reverse order) is: [ 81.171162][ T4335] [ 81.171162][ T4335] -> #4 (rfkill_global_mutex){+.+.}-{3:3}: [ 81.179907][ T4335] __mutex_lock_common+0x1e3/0x2400 [ 81.186359][ T4335] mutex_lock_nested+0x17/0x20 [ 81.191844][ T4335] rfkill_register+0x33/0x8a0 [ 81.197167][ T4335] hci_register_dev+0x452/0x970 [ 81.202842][ T4335] vhci_create_device+0x32c/0x5c0 [ 81.208806][ T4335] vhci_write+0x391/0x450 [ 81.213965][ T4335] vfs_write+0x745/0xd60 [ 81.218759][ T4335] ksys_write+0x152/0x260 [ 81.223813][ T4335] do_syscall_64+0x4c/0xa0 [ 81.228779][ T4335] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 81.235592][ T4335] [ 81.235592][ T4335] -> #3 (&data->open_mutex){+.+.}-{3:3}: [ 81.243705][ T4335] __mutex_lock_common+0x1e3/0x2400 [ 81.249460][ T4335] mutex_lock_nested+0x17/0x20 [ 81.254967][ T4335] vhci_send_frame+0x88/0x100 [ 81.260501][ T4335] hci_send_frame+0x1a9/0x2e0 [ 81.265823][ T4335] hci_tx_work+0x9f9/0x1710 [ 81.270881][ T4335] process_one_work+0x85f/0x1010 [ 81.276459][ T4335] worker_thread+0xaa6/0x1290 [ 81.281921][ T4335] kthread+0x436/0x520 [ 81.286601][ T4335] ret_from_fork+0x1f/0x30 [ 81.291568][ T4335] [ 81.291568][ T4335] -> #2 ((work_completion)(&hdev->tx_work)){+.+.}-{0:0}: [ 81.300978][ T4335] __flush_work+0x116/0x210 [ 81.306035][ T4335] hci_dev_do_close+0x1e7/0x1030 [ 81.311764][ T4335] hci_unregister_dev+0x2d7/0x580 [ 81.317437][ T4335] vhci_release+0x73/0xc0 [ 81.322407][ T4335] __fput+0x234/0x930 [ 81.326943][ T4335] task_work_run+0x125/0x1a0 [ 81.332114][ T4335] do_exit+0x626/0x20c0 [ 81.337564][ T4335] do_group_exit+0x12e/0x300 [ 81.342875][ T4335] get_signal+0x6ca/0x12c0 [ 81.348100][ T4335] arch_do_signal_or_restart+0xe7/0x12c0 [ 81.354626][ T4335] exit_to_user_mode_loop+0x9e/0x130 [ 81.360631][ T4335] exit_to_user_mode_prepare+0xee/0x180 [ 81.367200][ T4335] syscall_exit_to_user_mode+0x16/0x40 [ 81.373581][ T4335] do_syscall_64+0x58/0xa0 [ 81.378723][ T4335] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 81.385427][ T4335] [ 81.385427][ T4335] -> #1 (&hdev->req_lock){+.+.}-{3:3}: [ 81.394101][ T4335] __mutex_lock_common+0x1e3/0x2400 [ 81.400320][ T4335] mutex_lock_nested+0x17/0x20 [ 81.405835][ T4335] bg_scan_update+0x44/0x3b0 [ 81.411403][ T4335] process_one_work+0x85f/0x1010 [ 81.417518][ T4335] worker_thread+0xaa6/0x1290 [ 81.422760][ T4335] kthread+0x436/0x520 [ 81.427640][ T4335] ret_from_fork+0x1f/0x30 [ 81.432869][ T4335] [ 81.432869][ T4335] -> #0 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}: [ 81.443064][ T4335] __lock_acquire+0x2c42/0x7d10 [ 81.448569][ T4335] lock_acquire+0x19e/0x400 [ 81.453812][ T4335] __flush_work+0x116/0x210 [ 81.458864][ T4335] __cancel_work_timer+0x3f4/0x560 [ 81.464998][ T4335] hci_request_cancel_all+0xcc/0x300 [ 81.471125][ T4335] hci_dev_do_close+0x4e/0x1030 [ 81.477023][ T4335] hci_rfkill_set_block+0x10a/0x190 [ 81.482775][ T4335] rfkill_set_block+0x1c6/0x420 [ 81.488264][ T4335] rfkill_fop_write+0x452/0x560 [ 81.493754][ T4335] vfs_write+0x30b/0xd60 [ 81.498807][ T4335] ksys_write+0x152/0x260 [ 81.503953][ T4335] do_syscall_64+0x4c/0xa0 [ 81.509016][ T4335] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 81.515985][ T4335] [ 81.515985][ T4335] other info that might help us debug this: [ 81.515985][ T4335] [ 81.526666][ T4335] Chain exists of: [ 81.526666][ T4335] (work_completion)(&hdev->bg_scan_update) --> &data->open_mutex --> rfkill_global_mutex [ 81.526666][ T4335] [ 81.543207][ T4335] Possible unsafe locking scenario: [ 81.543207][ T4335] [ 81.551303][ T4335] CPU0 CPU1 [ 81.556865][ T4335] ---- ---- [ 81.562421][ T4335] lock(rfkill_global_mutex); [ 81.567387][ T4335] lock(&data->open_mutex); [ 81.574871][ T4335] lock(rfkill_global_mutex); [ 81.582444][ T4335] lock((work_completion)(&hdev->bg_scan_update)); [ 81.589281][ T4335] [ 81.589281][ T4335] *** DEADLOCK *** [ 81.589281][ T4335] [ 81.597660][ T4335] 1 lock held by syz.0.17/4335: [ 81.602624][ T4335] #0: ffffffff8d6c51a8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x18b/0x560 [ 81.613017][ T4335] [ 81.613017][ T4335] stack backtrace: [ 81.618927][ T4335] CPU: 0 PID: 4335 Comm: syz.0.17 Not tainted syzkaller #0 [ 81.626928][ T4335] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026 [ 81.637354][ T4335] Call Trace: [ 81.640672][ T4335] [ 81.643628][ T4335] dump_stack_lvl+0x188/0x250 [ 81.648507][ T4335] ? load_image+0x400/0x400 [ 81.653123][ T4335] ? show_regs_print_info+0x20/0x20 [ 81.658827][ T4335] ? print_circular_bug+0x12b/0x1a0 [ 81.664548][ T4335] check_noncircular+0x296/0x330 [ 81.669866][ T4335] ? look_up_lock_class+0x71/0x110 [ 81.675182][ T4335] ? add_chain_block+0x940/0x940 [ 81.680491][ T4335] ? lockdep_lock+0xf1/0x1f0 [ 81.685583][ T4335] ? __lock_acquire+0x12e8/0x7d10 [ 81.690821][ T4335] ? mark_lock+0x94/0x320 [ 81.695886][ T4335] ? _find_first_zero_bit+0xce/0xf0 [ 81.701205][ T4335] __lock_acquire+0x2c42/0x7d10 [ 81.706181][ T4335] ? verify_lock_unused+0x140/0x140 [ 81.711505][ T4335] ? verify_lock_unused+0x140/0x140 [ 81.717172][ T4335] ? mark_lock+0x94/0x320 [ 81.721857][ T4335] lock_acquire+0x19e/0x400 [ 81.726816][ T4335] ? __flush_work+0xfa/0x210 [ 81.732498][ T4335] ? __lock_acquire+0x7d10/0x7d10 [ 81.737755][ T4335] ? read_lock_is_recursive+0x10/0x10 [ 81.743514][ T4335] ? start_flush_work+0x776/0x820 [ 81.748572][ T4335] __flush_work+0x116/0x210 [ 81.753387][ T4335] ? __flush_work+0xfa/0x210 [ 81.758054][ T4335] ? flush_work+0x20/0x20 [ 81.762630][ T4335] ? try_to_grab_pending+0xfa/0x7f0 [ 81.768044][ T4335] ? mark_lock+0x94/0x320 [ 81.772503][ T4335] ? lockdep_hardirqs_on_prepare+0x409/0x770 [ 81.778840][ T4335] ? lock_chain_count+0x20/0x20 [ 81.783850][ T4335] ? mark_lock+0x94/0x320 [ 81.788400][ T4335] ? __cancel_work_timer+0x36a/0x560 [ 81.793853][ T4335] __cancel_work_timer+0x3f4/0x560 [ 81.799168][ T4335] ? cancel_work_sync+0x20/0x20 [ 81.804242][ T4335] ? __cancel_work+0x1f9/0x2e0 [ 81.809071][ T4335] ? lockdep_hardirqs_on+0x94/0x140 [ 81.814292][ T4335] ? __cancel_work+0x27b/0x2e0 [ 81.819358][ T4335] ? cancel_work+0x20/0x20 [ 81.823837][ T4335] ? lock_chain_count+0x20/0x20 [ 81.828819][ T4335] hci_request_cancel_all+0xcc/0x300 [ 81.834306][ T4335] hci_dev_do_close+0x4e/0x1030 [ 81.839185][ T4335] ? _raw_spin_unlock_irqrestore+0xc1/0x120 [ 81.845247][ T4335] ? _raw_spin_unlock+0x40/0x40 [ 81.850269][ T4335] hci_rfkill_set_block+0x10a/0x190 [ 81.855593][ T4335] ? rcu_lock_release+0x20/0x20 [ 81.860708][ T4335] rfkill_set_block+0x1c6/0x420 [ 81.865867][ T4335] rfkill_fop_write+0x452/0x560 [ 81.870841][ T4335] ? rfkill_fop_read+0x4d0/0x4d0 [ 81.876392][ T4335] ? common_file_perm+0x110/0x1c0 [ 81.881849][ T4335] ? fsnotify_perm+0x5d/0x560 [ 81.886742][ T4335] ? security_file_permission+0x75/0xa0 [ 81.892413][ T4335] ? rfkill_fop_read+0x4d0/0x4d0 [ 81.897582][ T4335] vfs_write+0x30b/0xd60 [ 81.901942][ T4335] ? file_end_write+0x250/0x250 [ 81.907277][ T4335] ? __context_tracking_exit+0x4c/0x80 [ 81.912786][ T4335] ? __lock_acquire+0x7d10/0x7d10 [ 81.918286][ T4335] ? __fdget_pos+0x1e2/0x370 [ 81.923273][ T4335] ksys_write+0x152/0x260 [ 81.928321][ T4335] ? __ia32_sys_read+0x80/0x80 [ 81.933130][ T4335] ? lockdep_hardirqs_on+0x94/0x140 [ 81.938574][ T4335] do_syscall_64+0x4c/0xa0 [ 81.943027][ T4335] ? clear_bhb_loop+0x30/0x80 [ 81.947734][ T4335] ? clear_bhb_loop+0x30/0x80 [ 81.952622][ T4335] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 81.958839][ T4335] RIP: 0033:0x7f48490ff819 [ 81.963600][ T4335] 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 [ 81.984101][ T4335] RSP: 002b:00007fff735b0cb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 81.995514][ T4335] RAX: ffffffffffffffda RBX: 00007f4849378fa0 RCX: 00007f48490ff819 [ 82.004308][ T4335] RDX: 0000000000000008 RSI: 0000200000000000 RDI: 0000000000000003 [ 82.012396][ T4335] RBP: 00007f4849195c91 R08: 0000000000000000 R09: 0000000000000000 [ 82.020888][ T4335] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 82.029304][ T4335] R13: 00007f4849378fac R14: 00007f4849378fa0 R15: 00007f4849378fa0 [ 82.037401][ T4335]