Warning: Permanently added '10.128.0.110' (ED25519) to the list of known hosts. 2026/10/04 09:07:06 parsed 1 programs 2026/10/04 09:07:06 serving rpc on tcp://43143 [ 64.919443][ T4195] cgroup: Unknown subsys name 'net' [ 65.079362][ T4195] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size = 127995904 bytes [ 66.575395][ T4195] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k FS [ 68.887760][ T156] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 68.902420][ T156] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 68.929766][ T145] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 68.941474][ T4231] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 68.949916][ T4231] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 68.958602][ T4231] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 69.412489][ T4243] chnl_net:caif_netlink_parms(): no params data found [ 69.476233][ T4243] bridge0: port 1(bridge_slave_0) entered blocking state [ 69.484203][ T4243] bridge0: port 1(bridge_slave_0) entered disabled state [ 69.492444][ T4243] device bridge_slave_0 entered promiscuous mode [ 69.502979][ T4243] bridge0: port 2(bridge_slave_1) entered blocking state [ 69.510766][ T4243] bridge0: port 2(bridge_slave_1) entered disabled state [ 69.519362][ T4243] device bridge_slave_1 entered promiscuous mode [ 69.546950][ T4243] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 69.558663][ T4243] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 69.587089][ T4243] team0: Port device team_slave_0 added [ 69.595618][ T4243] team0: Port device team_slave_1 added [ 69.619052][ T4243] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 69.626534][ T4243] 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. [ 69.652778][ T4243] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 69.666750][ T4243] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 69.673768][ T4243] 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. [ 69.700008][ T4243] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 69.739638][ T4243] device hsr_slave_0 entered promiscuous mode [ 69.747259][ T4243] device hsr_slave_1 entered promiscuous mode [ 69.888385][ T4243] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 69.905743][ T4243] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 69.918985][ T4243] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 69.929100][ T4243] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 70.021913][ T4243] 8021q: adding VLAN 0 to HW filter on device bond0 [ 70.039145][ T4231] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 70.049363][ T4231] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 70.061524][ T4243] 8021q: adding VLAN 0 to HW filter on device team0 [ 70.076084][ T145] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 70.085802][ T145] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 70.096614][ T145] bridge0: port 1(bridge_slave_0) entered blocking state [ 70.104458][ T145] bridge0: port 1(bridge_slave_0) entered forwarding state [ 70.124669][ T145] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 70.132890][ T145] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 70.142935][ T145] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 70.151863][ T145] bridge0: port 2(bridge_slave_1) entered blocking state [ 70.159349][ T145] bridge0: port 2(bridge_slave_1) entered forwarding state [ 70.168531][ T145] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 70.178219][ T145] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 70.187133][ T145] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 70.196403][ T145] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 70.213792][ T145] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 70.222184][ T145] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 70.231964][ T145] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 70.245018][ T145] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 70.254906][ T145] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 70.263966][ T145] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 70.272461][ T145] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 70.285032][ T4243] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 70.360815][ T144] ODEBUG: Out of memory. ODEBUG disabled [ 70.387088][ T145] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 70.395640][ T145] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 70.408421][ T4243] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 70.444958][ T4231] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 70.455393][ T4231] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 70.488904][ T4243] device veth0_vlan entered promiscuous mode [ 70.503086][ T145] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 70.514278][ T145] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 70.528836][ T145] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 70.536834][ T145] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 70.551747][ T4243] device veth1_vlan entered promiscuous mode [ 70.572924][ T156] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 70.581274][ T156] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 70.594659][ T156] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 70.604637][ T156] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 70.616818][ T4243] device veth0_macvtap entered promiscuous mode [ 70.628852][ T4243] device veth1_macvtap entered promiscuous mode [ 70.647663][ T4243] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 70.659494][ T145] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 70.668834][ T145] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 70.679773][ T145] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 70.688942][ T145] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 70.700576][ T4243] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 70.717798][ T156] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 70.729441][ T156] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 70.741009][ T4243] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 70.750954][ T4243] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 70.760349][ T4243] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 70.769109][ T4243] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 70.844208][ T4243] syz-executor (4243) used greatest stack depth: 20912 bytes left [ 71.506487][ T1430] ieee802154 phy0 wpan0: encryption failed: -22 [ 71.513421][ T1430] ieee802154 phy1 wpan1: encryption failed: -22 2026/10/04 09:07:15 executed programs: 0 [ 71.991659][ T4298] chnl_net:caif_netlink_parms(): no params data found [ 72.048193][ T4298] bridge0: port 1(bridge_slave_0) entered blocking state [ 72.055441][ T4298] bridge0: port 1(bridge_slave_0) entered disabled state [ 72.063919][ T4298] device bridge_slave_0 entered promiscuous mode [ 72.072943][ T4298] bridge0: port 2(bridge_slave_1) entered blocking state [ 72.081306][ T4298] bridge0: port 2(bridge_slave_1) entered disabled state [ 72.090035][ T4298] device bridge_slave_1 entered promiscuous mode [ 72.127705][ T4298] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 72.139565][ T4298] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 72.167991][ T4298] team0: Port device team_slave_0 added [ 72.175986][ T4298] team0: Port device team_slave_1 added [ 72.198576][ T4298] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 72.205763][ T4298] 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. [ 72.232259][ T4298] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 72.245280][ T4298] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 72.252363][ T4298] 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. [ 72.279182][ T4298] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 72.316507][ T4298] device hsr_slave_0 entered promiscuous mode [ 72.323704][ T4298] device hsr_slave_1 entered promiscuous mode [ 72.330530][ T4298] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 72.339165][ T4298] Cannot create hsr debugfs directory [ 72.426098][ T4298] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 73.903853][ T4209] Bluetooth: hci0: command 0x0409 tx timeout [ 75.798665][ T4298] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 75.984609][ T4257] Bluetooth: hci0: command 0x041b tx timeout [ 76.197422][ T4298] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 76.239335][ T4298] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 76.342779][ T4298] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 76.353064][ T4298] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 76.363271][ T4298] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 76.383594][ T4298] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 76.437444][ T4298] 8021q: adding VLAN 0 to HW filter on device bond0 [ 76.449627][ T156] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 76.457612][ T156] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 76.468260][ T4298] 8021q: adding VLAN 0 to HW filter on device team0 [ 76.484754][ T145] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 76.494397][ T145] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 76.503453][ T145] bridge0: port 1(bridge_slave_0) entered blocking state [ 76.510536][ T145] bridge0: port 1(bridge_slave_0) entered forwarding state [ 76.519794][ T145] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 76.539476][ T145] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 76.548347][ T145] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 76.557202][ T145] bridge0: port 2(bridge_slave_1) entered blocking state [ 76.564321][ T145] bridge0: port 2(bridge_slave_1) entered forwarding state [ 76.589824][ T156] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 76.602382][ T4231] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 76.614391][ T145] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 76.623055][ T145] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 76.632136][ T145] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 76.644314][ T4230] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 76.653496][ T4230] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 76.678546][ T4230] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 76.687425][ T4230] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 76.698464][ T4230] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 76.707733][ T4230] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 76.728895][ T4298] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 76.814094][ T145] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 76.821758][ T145] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 76.837404][ T144] device hsr_slave_0 left promiscuous mode [ 76.844917][ T144] device hsr_slave_1 left promiscuous mode [ 76.851460][ T144] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 76.860158][ T144] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 76.869553][ T144] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 76.877010][ T144] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 76.885030][ T144] device bridge_slave_1 left promiscuous mode [ 76.891831][ T144] bridge0: port 2(bridge_slave_1) entered disabled state [ 76.903130][ T144] device bridge_slave_0 left promiscuous mode [ 76.909734][ T144] bridge0: port 1(bridge_slave_0) entered disabled state [ 76.926385][ T144] device veth1_macvtap left promiscuous mode [ 76.932684][ T144] device veth0_macvtap left promiscuous mode [ 76.938990][ T144] device veth1_vlan left promiscuous mode [ 76.945535][ T144] device veth0_vlan left promiscuous mode [ 77.070604][ T144] team0 (unregistering): Port device team_slave_1 removed [ 77.086259][ T144] team0 (unregistering): Port device team_slave_0 removed [ 77.098235][ T144] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 77.111312][ T144] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 77.159573][ T144] bond0 (unregistering): Released all slaves [ 77.180158][ T4298] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 77.198722][ T145] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 77.207688][ T145] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 77.231989][ T4298] device veth0_vlan entered promiscuous mode [ 77.246801][ T145] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 77.255899][ T145] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 77.265745][ T145] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 77.274760][ T145] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 77.286194][ T4298] device veth1_vlan entered promiscuous mode [ 77.309631][ T145] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 77.318146][ T145] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 77.327217][ T145] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 77.335923][ T145] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 77.347972][ T4298] device veth0_macvtap entered promiscuous mode [ 77.363029][ T4298] device veth1_macvtap entered promiscuous mode [ 77.378041][ T4298] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 77.385912][ T4231] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 77.395319][ T4231] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 77.403293][ T4231] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 77.411797][ T4231] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 77.423798][ T4298] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 77.437561][ T4298] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 77.447096][ T4298] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 77.456223][ T4298] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 77.466067][ T4298] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 77.477442][ T4231] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 77.488066][ T4231] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 77.558076][ T145] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 77.566504][ T145] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 77.584157][ T4231] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 77.610103][ T145] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 77.619495][ T145] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 77.627854][ T4231] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 77.766030][ T4311] [ 77.768408][ T4311] ====================================================== [ 77.775438][ T4311] WARNING: possible circular locking dependency detected [ 77.782470][ T4311] syzkaller #0 Not tainted [ 77.786897][ T4311] ------------------------------------------------------ [ 77.793924][ T4311] syz.0.17/4311 is trying to acquire lock: [ 77.799741][ T4311] ffff88802af71028 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}, at: __flush_work+0xfa/0x210 [ 77.810823][ T4311] [ 77.810823][ T4311] but task is already holding lock: [ 77.818204][ T4311] ffffffff8d6d76c8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x1ae/0x560 [ 77.827887][ T4311] [ 77.827887][ T4311] which lock already depends on the new lock. [ 77.827887][ T4311] [ 77.838394][ T4311] [ 77.838394][ T4311] the existing dependency chain (in reverse order) is: [ 77.847616][ T4311] [ 77.847616][ T4311] -> #4 (rfkill_global_mutex){+.+.}-{3:3}: [ 77.855734][ T4311] __mutex_lock_common+0x1e5/0x2400 [ 77.861560][ T4311] mutex_lock_nested+0x17/0x20 [ 77.866862][ T4311] rfkill_register+0x2f/0x970 [ 77.872087][ T4311] hci_register_dev+0x459/0x980 [ 77.877736][ T4311] vhci_create_device+0x32e/0x5c0 [ 77.883319][ T4311] vhci_write+0x389/0x440 [ 77.888182][ T4311] vfs_write+0x748/0xd70 [ 77.892960][ T4311] ksys_write+0x153/0x260 [ 77.897819][ T4311] do_syscall_64+0x4c/0xa0 [ 77.902767][ T4311] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 77.909295][ T4311] [ 77.909295][ T4311] -> #3 (&data->open_mutex){+.+.}-{3:3}: [ 77.917220][ T4311] __mutex_lock_common+0x1e5/0x2400 [ 77.922956][ T4311] mutex_lock_nested+0x17/0x20 [ 77.928349][ T4311] vhci_send_frame+0x88/0x100 [ 77.933645][ T4311] hci_send_frame+0x1a9/0x2e0 [ 77.938975][ T4311] hci_tx_work+0x9b5/0x16d0 [ 77.944047][ T4311] process_one_work+0x867/0xff0 [ 77.949431][ T4311] worker_thread+0xad7/0x12a0 [ 77.954646][ T4311] kthread+0x42e/0x520 [ 77.959233][ T4311] ret_from_fork+0x1f/0x30 [ 77.964173][ T4311] [ 77.964173][ T4311] -> #2 ((work_completion)(&hdev->tx_work)){+.+.}-{0:0}: [ 77.973376][ T4311] __flush_work+0x116/0x210 [ 77.978490][ T4311] hci_dev_do_close+0x201/0x1020 [ 77.983964][ T4311] hci_unregister_dev+0x2eb/0x590 [ 77.989508][ T4311] vhci_release+0x73/0xc0 [ 77.994356][ T4311] __fput+0x212/0x8c0 [ 77.998856][ T4311] task_work_run+0x125/0x1a0 [ 78.003967][ T4311] do_exit+0x635/0x2110 [ 78.008646][ T4311] do_group_exit+0x12c/0x2f0 [ 78.013838][ T4311] get_signal+0x7eb/0x12e0 [ 78.018772][ T4311] arch_do_signal_or_restart+0xe6/0x12a0 [ 78.025008][ T4311] exit_to_user_mode_loop+0x9e/0x130 [ 78.030813][ T4311] exit_to_user_mode_prepare+0xee/0x180 [ 78.036960][ T4311] syscall_exit_to_user_mode+0x16/0x40 [ 78.042953][ T4311] do_syscall_64+0x58/0xa0 [ 78.047897][ T4311] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 78.054328][ T4311] [ 78.054328][ T4311] -> #1 (&hdev->req_lock){+.+.}-{3:3}: [ 78.061966][ T4311] __mutex_lock_common+0x1e5/0x2400 [ 78.067685][ T4311] mutex_lock_nested+0x17/0x20 [ 78.072966][ T4311] bg_scan_update+0x44/0x3b0 [ 78.078072][ T4311] process_one_work+0x867/0xff0 [ 78.083528][ T4311] worker_thread+0xad7/0x12a0 [ 78.088722][ T4311] kthread+0x42e/0x520 [ 78.093305][ T4311] ret_from_fork+0x1f/0x30 [ 78.098238][ T4311] [ 78.098238][ T4311] -> #0 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}: [ 78.108142][ T4311] __lock_acquire+0x38f7/0x7d40 [ 78.113785][ T4311] lock_acquire+0x19f/0x400 [ 78.118912][ T4311] __flush_work+0x116/0x210 [ 78.124042][ T4311] __cancel_work_timer+0x3f4/0x560 [ 78.129787][ T4311] hci_request_cancel_all+0xcc/0x300 [ 78.135702][ T4311] hci_dev_do_close+0x4e/0x1020 [ 78.141077][ T4311] hci_rfkill_set_block+0x101/0x180 [ 78.146796][ T4311] rfkill_set_block+0x1c1/0x3c0 [ 78.152251][ T4311] rfkill_fop_write+0x453/0x560 [ 78.157704][ T4311] vfs_write+0x304/0xd70 [ 78.162458][ T4311] ksys_write+0x153/0x260 [ 78.167404][ T4311] do_syscall_64+0x4c/0xa0 [ 78.172336][ T4311] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 78.178749][ T4311] [ 78.178749][ T4311] other info that might help us debug this: [ 78.178749][ T4311] [ 78.188976][ T4311] Chain exists of: [ 78.188976][ T4311] (work_completion)(&hdev->bg_scan_update) --> &data->open_mutex --> rfkill_global_mutex [ 78.188976][ T4311] [ 78.204785][ T4311] Possible unsafe locking scenario: [ 78.204785][ T4311] [ 78.212252][ T4311] CPU0 CPU1 [ 78.217611][ T4311] ---- ---- [ 78.222968][ T4311] lock(rfkill_global_mutex); [ 78.227750][ T4311] lock(&data->open_mutex); [ 78.234855][ T4311] lock(rfkill_global_mutex); [ 78.242159][ T4311] lock((work_completion)(&hdev->bg_scan_update)); [ 78.248743][ T4311] [ 78.248743][ T4311] *** DEADLOCK *** [ 78.248743][ T4311] [ 78.256892][ T4311] 1 lock held by syz.0.17/4311: [ 78.261737][ T4311] #0: ffffffff8d6d76c8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x1ae/0x560 [ 78.271822][ T4311] [ 78.271822][ T4311] stack backtrace: [ 78.277704][ T4311] CPU: 0 PID: 4311 Comm: syz.0.17 Not tainted syzkaller #0 [ 78.284895][ T4311] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026 [ 78.294985][ T4311] Call Trace: [ 78.298280][ T4311] [ 78.301299][ T4311] dump_stack_lvl+0x188/0x250 [ 78.306059][ T4311] ? load_image+0x410/0x410 [ 78.310561][ T4311] ? show_regs_print_info+0x20/0x20 [ 78.315849][ T4311] ? print_circular_bug+0x12b/0x1a0 [ 78.321323][ T4311] check_noncircular+0x2f8/0x400 [ 78.326268][ T4311] ? look_up_lock_class+0x71/0x110 [ 78.331380][ T4311] ? print_deadlock_bug+0x5d0/0x5d0 [ 78.336573][ T4311] ? lockdep_lock+0xf1/0x1f0 [ 78.341161][ T4311] ? __lock_acquire+0x12df/0x7d40 [ 78.346187][ T4311] ? mark_lock+0x94/0x320 [ 78.350511][ T4311] ? _find_first_zero_bit+0xd1/0xf0 [ 78.355710][ T4311] __lock_acquire+0x38f7/0x7d40 [ 78.360564][ T4311] ? verify_lock_unused+0x140/0x140 [ 78.365775][ T4311] ? verify_lock_unused+0x140/0x140 [ 78.370990][ T4311] lock_acquire+0x19f/0x400 [ 78.375491][ T4311] ? __flush_work+0xfa/0x210 [ 78.380080][ T4311] ? __lock_acquire+0x7d40/0x7d40 [ 78.385112][ T4311] ? read_lock_is_recursive+0x10/0x10 [ 78.390569][ T4311] ? start_flush_work+0x784/0x830 [ 78.395597][ T4311] __flush_work+0x116/0x210 [ 78.400097][ T4311] ? __flush_work+0xfa/0x210 [ 78.404687][ T4311] ? flush_work+0x20/0x20 [ 78.409022][ T4311] ? try_to_grab_pending+0xfb/0x820 [ 78.414476][ T4311] ? mark_lock+0x94/0x320 [ 78.418891][ T4311] ? lockdep_hardirqs_on_prepare+0x448/0x7c0 [ 78.424874][ T4311] ? lock_chain_count+0x20/0x20 [ 78.429738][ T4311] ? mark_lock+0x94/0x320 [ 78.434238][ T4311] ? __cancel_work_timer+0x36a/0x560 [ 78.439525][ T4311] __cancel_work_timer+0x3f4/0x560 [ 78.444640][ T4311] ? cancel_work_sync+0x20/0x20 [ 78.449623][ T4311] ? __cancel_work+0x1f9/0x2e0 [ 78.454428][ T4311] ? lockdep_hardirqs_on+0x94/0x140 [ 78.459643][ T4311] ? __cancel_work+0x27b/0x2e0 [ 78.464511][ T4311] ? cancel_work+0x20/0x20 [ 78.468931][ T4311] hci_request_cancel_all+0xcc/0x300 [ 78.474405][ T4311] hci_dev_do_close+0x4e/0x1020 [ 78.479259][ T4311] ? _raw_spin_unlock_irqrestore+0xc1/0x120 [ 78.485242][ T4311] ? _raw_spin_unlock+0x40/0x40 [ 78.490092][ T4311] hci_rfkill_set_block+0x101/0x180 [ 78.495363][ T4311] ? rcu_lock_release+0x20/0x20 [ 78.500223][ T4311] rfkill_set_block+0x1c1/0x3c0 [ 78.505076][ T4311] rfkill_fop_write+0x453/0x560 [ 78.509949][ T4311] ? rfkill_fop_read+0x560/0x560 [ 78.514971][ T4311] ? common_file_perm+0x150/0x1c0 [ 78.520008][ T4311] ? fsnotify_perm+0x5d/0x560 [ 78.524713][ T4311] ? security_file_permission+0x75/0xa0 [ 78.530280][ T4311] ? rfkill_fop_read+0x560/0x560 [ 78.535225][ T4311] vfs_write+0x304/0xd70 [ 78.539529][ T4311] ? file_end_write+0x250/0x250 [ 78.544661][ T4311] ? __context_tracking_exit+0x4c/0x80 [ 78.550423][ T4311] ? __fdget_pos+0x1e2/0x370 [ 78.555012][ T4311] ksys_write+0x153/0x260 [ 78.559341][ T4311] ? __ia32_sys_read+0x80/0x80 [ 78.564101][ T4311] ? lockdep_hardirqs_on+0x94/0x140 [ 78.569748][ T4311] do_syscall_64+0x4c/0xa0 [ 78.574193][ T4311] ? clear_bhb_loop+0x30/0x80 [ 78.578885][ T4311] ? clear_bhb_loop+0x30/0x80 [ 78.583586][ T4311] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 78.589486][ T4311] RIP: 0033:0x7fcccb86e159 [ 78.593907][ T4311] 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 [ 78.613966][ T4311] RSP: 002b:00007ffc7e912118 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 78.622411][ T4311] RAX: ffffffffffffffda RBX: 00007fcccbaf5fa0 RCX: 00007fcccb86e159 [ 78.630385][ T4311] RDX: 0000000000000008 RSI: 0000200000000300 RDI: 0000000000000003 [ 78.638460][ T4311] RBP: 00007fcccb90506b R08: 0000000000000000 R09: 0000000000000000 [ 78.646438][ T4311] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 78.654419][ T4311] R13: 00007fcccbaf5fac R14: 00007fcccbaf5fa0 R15: 00007fcccbaf5fa0 [ 78.662405][ T4311] [ 78.669524][ T4209] Bluetooth: hci0: command 0x040f tx timeout