Warning: Permanently added '10.128.0.80' (ED25519) to the list of known hosts. 2026/04/04 07:19:49 parsed 1 programs [ 66.427914][ T4188] cgroup: Unknown subsys name 'net' [ 66.541282][ T4188] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size = 127995904 bytes [ 68.050834][ T4188] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k FS [ 70.363945][ T1373] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 70.372039][ T1373] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 70.402763][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 70.418786][ T4220] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 70.427276][ T4220] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 70.435771][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 70.778135][ T4228] chnl_net:caif_netlink_parms(): no params data found [ 70.859761][ T4228] bridge0: port 1(bridge_slave_0) entered blocking state [ 70.868903][ T4228] bridge0: port 1(bridge_slave_0) entered disabled state [ 70.877597][ T4228] device bridge_slave_0 entered promiscuous mode [ 70.888845][ T4228] bridge0: port 2(bridge_slave_1) entered blocking state [ 70.896757][ T4228] bridge0: port 2(bridge_slave_1) entered disabled state [ 70.906332][ T4228] device bridge_slave_1 entered promiscuous mode [ 70.934999][ T4228] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 70.948789][ T4228] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 70.977484][ T4228] team0: Port device team_slave_0 added [ 70.985724][ T4228] team0: Port device team_slave_1 added [ 71.009844][ T4228] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 71.027714][ T4228] batman_adv: batadv0: The MTU of interface batadv_slave_0 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. [ 71.054413][ T4228] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 71.068860][ T4228] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 71.076314][ T4228] batman_adv: batadv0: The MTU of interface batadv_slave_1 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. [ 71.102604][ T4228] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 71.145838][ T4228] device hsr_slave_0 entered promiscuous mode [ 71.153669][ T4228] device hsr_slave_1 entered promiscuous mode [ 71.305341][ T4228] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 71.318817][ T4228] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 71.329289][ T4228] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 71.339541][ T4228] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 71.432699][ T4228] 8021q: adding VLAN 0 to HW filter on device bond0 [ 71.447781][ T4220] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 71.457459][ T4220] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 71.470068][ T4228] 8021q: adding VLAN 0 to HW filter on device team0 [ 71.480694][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 71.490025][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 71.500734][ T154] bridge0: port 1(bridge_slave_0) entered blocking state [ 71.508271][ T154] bridge0: port 1(bridge_slave_0) entered forwarding state [ 71.519647][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 71.528371][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 71.538157][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 71.549332][ T1423] ieee802154 phy0 wpan0: encryption failed: -22 [ 71.550347][ T154] bridge0: port 2(bridge_slave_1) entered blocking state [ 71.556769][ T1423] ieee802154 phy1 wpan1: encryption failed: -22 [ 71.563073][ T154] bridge0: port 2(bridge_slave_1) entered forwarding state [ 71.605545][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 71.616154][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 71.629227][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 71.639940][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 71.661953][ T4228] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 71.675583][ T4228] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 71.691540][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 71.699792][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 71.708675][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 71.717625][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 71.726446][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 71.736988][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 71.745713][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 71.754330][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 71.880284][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 71.888365][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 71.906176][ T4228] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 71.931591][ T4220] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 71.945340][ T4220] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 71.972029][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 71.981412][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 72.007340][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 72.015336][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 72.033578][ T4228] device veth0_vlan entered promiscuous mode [ 72.056649][ T4228] device veth1_vlan entered promiscuous mode [ 72.111840][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 72.120569][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 72.129372][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 72.139626][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 72.151765][ T4228] device veth0_macvtap entered promiscuous mode [ 72.162206][ T4228] device veth1_macvtap entered promiscuous mode [ 72.179386][ T4228] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 72.187914][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 72.196321][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 72.204985][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 72.215343][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 72.227082][ T4228] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 72.236564][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 72.246174][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 72.257155][ T4228] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 72.269276][ T4228] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 72.278651][ T4228] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 72.287777][ T4228] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 72.402637][ T4228] syz-executor (4228) used greatest stack depth: 21136 bytes left 2026/04/04 07:19:59 executed programs: 0 [ 73.947087][ T4288] chnl_net:caif_netlink_parms(): no params data found [ 74.019870][ T4288] bridge0: port 1(bridge_slave_0) entered blocking state [ 74.027536][ T4288] bridge0: port 1(bridge_slave_0) entered disabled state [ 74.038478][ T4288] device bridge_slave_0 entered promiscuous mode [ 74.047641][ T4288] bridge0: port 2(bridge_slave_1) entered blocking state [ 74.057520][ T4288] bridge0: port 2(bridge_slave_1) entered disabled state [ 74.065984][ T4288] device bridge_slave_1 entered promiscuous mode [ 74.092679][ T4288] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 74.104701][ T4288] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 74.133112][ T4288] team0: Port device team_slave_0 added [ 74.141359][ T4288] team0: Port device team_slave_1 added [ 74.164906][ T4288] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 74.171886][ T4288] 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. [ 74.199054][ T4288] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 74.212055][ T4288] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 74.219341][ T4288] 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. [ 74.246507][ T4288] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 74.286685][ T4288] device hsr_slave_0 entered promiscuous mode [ 74.293638][ T4288] device hsr_slave_1 entered promiscuous mode [ 74.301000][ T4288] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 74.309273][ T4288] Cannot create hsr debugfs directory [ 74.422565][ T4288] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 75.874518][ T4266] Bluetooth: hci0: command 0x0409 tx timeout [ 77.030963][ T4288] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 77.111712][ T4288] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 77.190859][ T4288] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 77.311817][ T4288] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 77.323678][ T4288] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 77.334311][ T4288] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 77.343961][ T4288] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 77.435309][ T4288] 8021q: adding VLAN 0 to HW filter on device bond0 [ 77.476686][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 77.484820][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 77.498786][ T4288] 8021q: adding VLAN 0 to HW filter on device team0 [ 77.524745][ T4220] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 77.533534][ T4220] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 77.542431][ T4220] bridge0: port 1(bridge_slave_0) entered blocking state [ 77.549736][ T4220] bridge0: port 1(bridge_slave_0) entered forwarding state [ 77.558416][ T4220] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 77.588040][ T4220] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 77.598798][ T4220] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 77.608085][ T4220] bridge0: port 2(bridge_slave_1) entered blocking state [ 77.615298][ T4220] bridge0: port 2(bridge_slave_1) entered forwarding state [ 77.628193][ T4220] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 77.646723][ T155] device hsr_slave_0 left promiscuous mode [ 77.653593][ T155] device hsr_slave_1 left promiscuous mode [ 77.661168][ T155] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 77.669436][ T155] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 77.678599][ T155] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 77.686264][ T155] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 77.694598][ T155] device bridge_slave_1 left promiscuous mode [ 77.701526][ T155] bridge0: port 2(bridge_slave_1) entered disabled state [ 77.720593][ T155] device bridge_slave_0 left promiscuous mode [ 77.727895][ T155] bridge0: port 1(bridge_slave_0) entered disabled state [ 77.747023][ T155] device veth1_macvtap left promiscuous mode [ 77.753516][ T155] device veth0_macvtap left promiscuous mode [ 77.760177][ T155] device veth1_vlan left promiscuous mode [ 77.766329][ T155] device veth0_vlan left promiscuous mode [ 77.944036][ T4253] Bluetooth: hci0: command 0x041b tx timeout [ 77.961289][ T155] team0 (unregistering): Port device team_slave_1 removed [ 77.978364][ T155] team0 (unregistering): Port device team_slave_0 removed [ 77.994573][ T155] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 78.010292][ T155] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 78.077472][ T155] bond0 (unregistering): Released all slaves [ 78.159121][ T4220] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 78.171375][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 78.181255][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 78.192092][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 78.204880][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 78.214032][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 78.230672][ T4288] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 78.244531][ T4288] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 78.265075][ T4220] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 78.295400][ T4220] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 78.306927][ T4220] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 78.316856][ T4220] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 78.326901][ T4220] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 78.392746][ T4220] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 78.400839][ T4220] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 78.413077][ T4288] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 78.449994][ T4220] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 78.459340][ T4220] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 78.476487][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 78.485339][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 78.494200][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 78.502438][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 78.515517][ T4288] device veth0_vlan entered promiscuous mode [ 78.528654][ T4288] device veth1_vlan entered promiscuous mode [ 78.549494][ T4220] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 78.558488][ T4220] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 78.569808][ T4288] device veth0_macvtap entered promiscuous mode [ 78.580586][ T4288] device veth1_macvtap entered promiscuous mode [ 78.602265][ T4288] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 78.610549][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 78.620498][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 78.629401][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 78.640377][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 78.653798][ T4288] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 78.661200][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 78.672096][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 78.685521][ T4288] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 78.703964][ T4288] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 78.712717][ T4288] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 78.721898][ T4288] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 78.795405][ T4220] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 78.803422][ T4220] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 78.826602][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 78.841727][ T144] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 78.850394][ T144] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 78.858862][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 78.959163][ T4304] [ 78.961578][ T4304] ====================================================== [ 78.968649][ T4304] WARNING: possible circular locking dependency detected [ 78.975713][ T4304] syzkaller #0 Not tainted [ 78.980162][ T4304] ------------------------------------------------------ [ 78.987728][ T4304] syz.0.17/4304 is trying to acquire lock: [ 78.993646][ T4304] ffff8880751ecc28 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}, at: __flush_work+0xfa/0x210 [ 79.004926][ T4304] [ 79.004926][ T4304] but task is already holding lock: [ 79.012454][ T4304] ffffffff8d6c51a8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x18b/0x560 [ 79.022169][ T4304] [ 79.022169][ T4304] which lock already depends on the new lock. [ 79.022169][ T4304] [ 79.032691][ T4304] [ 79.032691][ T4304] the existing dependency chain (in reverse order) is: [ 79.041737][ T4304] [ 79.041737][ T4304] -> #4 (rfkill_global_mutex){+.+.}-{3:3}: [ 79.049773][ T4304] __mutex_lock_common+0x1e3/0x2400 [ 79.055535][ T4304] mutex_lock_nested+0x17/0x20 [ 79.060864][ T4304] rfkill_register+0x33/0x8a0 [ 79.066099][ T4304] hci_register_dev+0x452/0x970 [ 79.071523][ T4304] vhci_create_device+0x32c/0x5c0 [ 79.077149][ T4304] vhci_write+0x391/0x450 [ 79.082034][ T4304] vfs_write+0x745/0xd60 [ 79.086832][ T4304] ksys_write+0x152/0x260 [ 79.091725][ T4304] do_syscall_64+0x4c/0xa0 [ 79.096689][ T4304] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 79.103224][ T4304] [ 79.103224][ T4304] -> #3 (&data->open_mutex){+.+.}-{3:3}: [ 79.111079][ T4304] __mutex_lock_common+0x1e3/0x2400 [ 79.116850][ T4304] mutex_lock_nested+0x17/0x20 [ 79.122257][ T4304] vhci_send_frame+0x88/0x100 [ 79.127601][ T4304] hci_send_frame+0x1a9/0x2e0 [ 79.133031][ T4304] hci_tx_work+0x9f9/0x1710 [ 79.138281][ T4304] process_one_work+0x85f/0x1010 [ 79.144099][ T4304] worker_thread+0xaa6/0x1290 [ 79.149357][ T4304] kthread+0x436/0x520 [ 79.153994][ T4304] ret_from_fork+0x1f/0x30 [ 79.158982][ T4304] [ 79.158982][ T4304] -> #2 ((work_completion)(&hdev->tx_work)){+.+.}-{0:0}: [ 79.168231][ T4304] __flush_work+0x116/0x210 [ 79.173393][ T4304] hci_dev_do_close+0x1e7/0x1030 [ 79.178887][ T4304] hci_unregister_dev+0x2d7/0x580 [ 79.184470][ T4304] vhci_release+0x73/0xc0 [ 79.189348][ T4304] __fput+0x234/0x930 [ 79.193885][ T4304] task_work_run+0x125/0x1a0 [ 79.199232][ T4304] do_exit+0x626/0x20c0 [ 79.204041][ T4304] do_group_exit+0x12e/0x300 [ 79.209199][ T4304] get_signal+0x6ca/0x12c0 [ 79.214189][ T4304] arch_do_signal_or_restart+0xe7/0x12c0 [ 79.220866][ T4304] exit_to_user_mode_loop+0x9e/0x130 [ 79.227402][ T4304] exit_to_user_mode_prepare+0xee/0x180 [ 79.233692][ T4304] syscall_exit_to_user_mode+0x16/0x40 [ 79.239725][ T4304] do_syscall_64+0x58/0xa0 [ 79.244802][ T4304] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 79.251542][ T4304] [ 79.251542][ T4304] -> #1 (&hdev->req_lock){+.+.}-{3:3}: [ 79.259528][ T4304] __mutex_lock_common+0x1e3/0x2400 [ 79.265414][ T4304] mutex_lock_nested+0x17/0x20 [ 79.270792][ T4304] bg_scan_update+0x44/0x3b0 [ 79.276064][ T4304] process_one_work+0x85f/0x1010 [ 79.281970][ T4304] worker_thread+0xaa6/0x1290 [ 79.287560][ T4304] kthread+0x436/0x520 [ 79.292282][ T4304] ret_from_fork+0x1f/0x30 [ 79.297426][ T4304] [ 79.297426][ T4304] -> #0 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}: [ 79.307291][ T4304] __lock_acquire+0x2c42/0x7d10 [ 79.312712][ T4304] lock_acquire+0x19e/0x400 [ 79.317776][ T4304] __flush_work+0x116/0x210 [ 79.322963][ T4304] __cancel_work_timer+0x3f4/0x560 [ 79.328627][ T4304] hci_request_cancel_all+0xcc/0x300 [ 79.334468][ T4304] hci_dev_do_close+0x4e/0x1030 [ 79.339870][ T4304] hci_rfkill_set_block+0x10a/0x190 [ 79.345629][ T4304] rfkill_set_block+0x1c6/0x420 [ 79.351033][ T4304] rfkill_fop_write+0x452/0x560 [ 79.356452][ T4304] do_iter_write+0x3e4/0x7b0 [ 79.361591][ T4304] do_writev+0x281/0x480 [ 79.366385][ T4304] do_syscall_64+0x4c/0xa0 [ 79.371361][ T4304] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 79.377810][ T4304] [ 79.377810][ T4304] other info that might help us debug this: [ 79.377810][ T4304] [ 79.388147][ T4304] Chain exists of: [ 79.388147][ T4304] (work_completion)(&hdev->bg_scan_update) --> &data->open_mutex --> rfkill_global_mutex [ 79.388147][ T4304] [ 79.404025][ T4304] Possible unsafe locking scenario: [ 79.404025][ T4304] [ 79.411534][ T4304] CPU0 CPU1 [ 79.416929][ T4304] ---- ---- [ 79.422511][ T4304] lock(rfkill_global_mutex); [ 79.427536][ T4304] lock(&data->open_mutex); [ 79.434860][ T4304] lock(rfkill_global_mutex); [ 79.442176][ T4304] lock((work_completion)(&hdev->bg_scan_update)); [ 79.448938][ T4304] [ 79.448938][ T4304] *** DEADLOCK *** [ 79.448938][ T4304] [ 79.457112][ T4304] 1 lock held by syz.0.17/4304: [ 79.461994][ T4304] #0: ffffffff8d6c51a8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x18b/0x560 [ 79.472226][ T4304] [ 79.472226][ T4304] stack backtrace: [ 79.478165][ T4304] CPU: 0 PID: 4304 Comm: syz.0.17 Not tainted syzkaller #0 [ 79.485401][ T4304] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026 [ 79.495617][ T4304] Call Trace: [ 79.499058][ T4304] [ 79.502035][ T4304] dump_stack_lvl+0x188/0x250 [ 79.506857][ T4304] ? load_image+0x400/0x400 [ 79.511438][ T4304] ? show_regs_print_info+0x20/0x20 [ 79.516681][ T4304] ? print_circular_bug+0x12b/0x1a0 [ 79.521929][ T4304] check_noncircular+0x296/0x330 [ 79.527123][ T4304] ? look_up_lock_class+0x71/0x110 [ 79.532297][ T4304] ? add_chain_block+0x940/0x940 [ 79.537272][ T4304] ? lockdep_lock+0xf1/0x1f0 [ 79.541901][ T4304] ? __lock_acquire+0x12e8/0x7d10 [ 79.547148][ T4304] ? mark_lock+0x94/0x320 [ 79.551621][ T4304] __lock_acquire+0x2c42/0x7d10 [ 79.556640][ T4304] ? verify_lock_unused+0x140/0x140 [ 79.562190][ T4304] ? verify_lock_unused+0x140/0x140 [ 79.567444][ T4304] ? mark_lock+0x94/0x320 [ 79.572861][ T4304] lock_acquire+0x19e/0x400 [ 79.577414][ T4304] ? __flush_work+0xfa/0x210 [ 79.582159][ T4304] ? __lock_acquire+0x7d10/0x7d10 [ 79.587330][ T4304] ? read_lock_is_recursive+0x10/0x10 [ 79.592867][ T4304] ? start_flush_work+0x776/0x820 [ 79.598022][ T4304] __flush_work+0x116/0x210 [ 79.602644][ T4304] ? __flush_work+0xfa/0x210 [ 79.607359][ T4304] ? flush_work+0x20/0x20 [ 79.611734][ T4304] ? try_to_grab_pending+0xfa/0x7f0 [ 79.617435][ T4304] ? mark_lock+0x94/0x320 [ 79.621903][ T4304] ? lockdep_hardirqs_on_prepare+0x409/0x770 [ 79.628103][ T4304] ? lock_chain_count+0x20/0x20 [ 79.632995][ T4304] ? mark_lock+0x94/0x320 [ 79.637403][ T4304] ? __cancel_work_timer+0x36a/0x560 [ 79.642733][ T4304] __cancel_work_timer+0x3f4/0x560 [ 79.648002][ T4304] ? cancel_work_sync+0x20/0x20 [ 79.652899][ T4304] ? __cancel_work+0x1f9/0x2e0 [ 79.657712][ T4304] ? lockdep_hardirqs_on+0x94/0x140 [ 79.662972][ T4304] ? __cancel_work+0x27b/0x2e0 [ 79.667907][ T4304] ? cancel_work+0x20/0x20 [ 79.672369][ T4304] ? lock_chain_count+0x20/0x20 [ 79.677258][ T4304] hci_request_cancel_all+0xcc/0x300 [ 79.682882][ T4304] hci_dev_do_close+0x4e/0x1030 [ 79.687793][ T4304] ? _raw_spin_unlock_irqrestore+0xc1/0x120 [ 79.693823][ T4304] ? _raw_spin_unlock+0x40/0x40 [ 79.698977][ T4304] hci_rfkill_set_block+0x10a/0x190 [ 79.704299][ T4304] ? rcu_lock_release+0x20/0x20 [ 79.709208][ T4304] rfkill_set_block+0x1c6/0x420 [ 79.714194][ T4304] rfkill_fop_write+0x452/0x560 [ 79.719189][ T4304] ? _copy_from_user+0x111/0x170 [ 79.724414][ T4304] ? rfkill_fop_read+0x4d0/0x4d0 [ 79.729586][ T4304] ? common_file_perm+0x171/0x1c0 [ 79.734817][ T4304] ? fsnotify_perm+0x5d/0x560 [ 79.739920][ T4304] ? security_file_permission+0x75/0xa0 [ 79.746414][ T4304] do_iter_write+0x3e4/0x7b0 [ 79.751143][ T4304] do_writev+0x281/0x480 [ 79.755507][ T4304] ? do_readv+0x460/0x460 [ 79.759876][ T4304] ? lockdep_hardirqs_on_prepare+0x409/0x770 [ 79.765921][ T4304] ? lock_chain_count+0x20/0x20 [ 79.770824][ T4304] ? vtime_user_exit+0x2c8/0x3e0 [ 79.775890][ T4304] ? lockdep_hardirqs_on+0x94/0x140 [ 79.781545][ T4304] do_syscall_64+0x4c/0xa0 [ 79.786165][ T4304] ? clear_bhb_loop+0x30/0x80 [ 79.790886][ T4304] ? clear_bhb_loop+0x30/0x80 [ 79.795594][ T4304] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 79.801533][ T4304] RIP: 0033:0x7f9bfe0d6819 [ 79.806019][ T4304] 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 [ 79.826180][ T4304] RSP: 002b:00007ffdd71f4098 EFLAGS: 00000246 ORIG_RAX: 0000000000000014 [ 79.834747][ T4304] RAX: ffffffffffffffda RBX: 00007f9bfe34ffa0 RCX: 00007f9bfe0d6819 [ 79.842757][ T4304] RDX: 0000000000000002 RSI: 0000200000001280 RDI: 0000000000000003 [ 79.850756][ T4304] RBP: 00007f9bfe16cc91 R08: 0000000000000000 R09: 0000000000000000 [ 79.858768][ T4304] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 79.866770][ T4304] R13: 00007f9bfe34ffac R14: 00007f9bfe34ffa0 R15: 00007f9bfe34ffa0 [ 79.874894][ T4304]