Warning: Permanently added '10.128.0.65' (ED25519) to the list of known hosts. 2026/04/25 12:15:21 parsed 1 programs [ 59.949451][ T4187] cgroup: Unknown subsys name 'net' [ 60.088725][ T4187] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size = 127995904 bytes [ 61.549098][ T4187] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k FS [ 62.927074][ T653] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 62.937994][ T653] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 62.948025][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 62.966298][ T154] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 62.974220][ T154] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 62.981945][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 63.362247][ T4208] chnl_net:caif_netlink_parms(): no params data found [ 63.406947][ T4208] bridge0: port 1(bridge_slave_0) entered blocking state [ 63.414590][ T4208] bridge0: port 1(bridge_slave_0) entered disabled state [ 63.422589][ T4208] device bridge_slave_0 entered promiscuous mode [ 63.434170][ T4208] bridge0: port 2(bridge_slave_1) entered blocking state [ 63.441294][ T4208] bridge0: port 2(bridge_slave_1) entered disabled state [ 63.449175][ T4208] device bridge_slave_1 entered promiscuous mode [ 63.468041][ T4208] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 63.478606][ T4208] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 63.499497][ T4208] team0: Port device team_slave_0 added [ 63.510741][ T4208] team0: Port device team_slave_1 added [ 63.526985][ T4208] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 63.534162][ T4208] 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. [ 63.560095][ T4208] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 63.572528][ T4208] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 63.579554][ T4208] 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. [ 63.605639][ T4208] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 63.637620][ T4208] device hsr_slave_0 entered promiscuous mode [ 63.644308][ T4208] device hsr_slave_1 entered promiscuous mode [ 63.746766][ T4208] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 63.757246][ T4208] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 63.766838][ T4208] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 63.775568][ T4208] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 63.821088][ T4208] bridge0: port 2(bridge_slave_1) entered blocking state [ 63.828302][ T4208] bridge0: port 2(bridge_slave_1) entered forwarding state [ 63.836222][ T4208] bridge0: port 1(bridge_slave_0) entered blocking state [ 63.843316][ T4208] bridge0: port 1(bridge_slave_0) entered forwarding state [ 63.898979][ T4208] 8021q: adding VLAN 0 to HW filter on device bond0 [ 63.912178][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 63.921112][ T144] bridge0: port 1(bridge_slave_0) entered disabled state [ 63.930222][ T144] bridge0: port 2(bridge_slave_1) entered disabled state [ 63.944864][ T4208] 8021q: adding VLAN 0 to HW filter on device team0 [ 63.957765][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 63.967377][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 63.976185][ T144] bridge0: port 1(bridge_slave_0) entered blocking state [ 63.983291][ T144] bridge0: port 1(bridge_slave_0) entered forwarding state [ 64.005663][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 64.016706][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 64.025438][ T144] bridge0: port 2(bridge_slave_1) entered blocking state [ 64.032514][ T144] bridge0: port 2(bridge_slave_1) entered forwarding state [ 64.043464][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 64.052347][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 64.065501][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 64.075627][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 64.096638][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 64.106310][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 64.115466][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 64.127224][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 64.137604][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 64.151483][ T4208] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 64.163178][ T4208] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 64.172434][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 64.184037][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 64.322286][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 64.329986][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 64.345165][ T4208] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 64.368008][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 64.377024][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 64.400493][ T4208] device veth0_vlan entered promiscuous mode [ 64.407640][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 64.417734][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 64.427048][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 64.435199][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 64.448680][ T4208] device veth1_vlan entered promiscuous mode [ 64.485112][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 64.493625][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 64.501807][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 64.512258][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 64.523749][ T4208] device veth0_macvtap entered promiscuous mode [ 64.534984][ T4208] device veth1_macvtap entered promiscuous mode [ 64.552180][ T4208] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 64.559706][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 64.570511][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 64.578801][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 64.589001][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 64.601246][ T4208] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 64.609493][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 64.627706][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 64.640143][ T4208] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 64.649461][ T4208] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 64.658479][ T4208] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 64.667491][ T4208] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 64.772645][ T4208] syz-executor (4208) used greatest stack depth: 20592 bytes left [ 65.492613][ T653] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 2026/04/25 12:15:29 executed programs: 0 [ 66.861119][ T4276] chnl_net:caif_netlink_parms(): no params data found [ 66.899247][ T4276] bridge0: port 1(bridge_slave_0) entered blocking state [ 66.906400][ T4276] bridge0: port 1(bridge_slave_0) entered disabled state [ 66.914860][ T4276] device bridge_slave_0 entered promiscuous mode [ 66.922659][ T4276] bridge0: port 2(bridge_slave_1) entered blocking state [ 66.929961][ T4276] bridge0: port 2(bridge_slave_1) entered disabled state [ 66.937948][ T4276] device bridge_slave_1 entered promiscuous mode [ 66.958273][ T4276] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 66.969551][ T4276] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 66.991894][ T4276] team0: Port device team_slave_0 added [ 66.998958][ T4276] team0: Port device team_slave_1 added [ 67.014254][ T4276] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 67.021311][ T4276] 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. [ 67.047370][ T4276] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 67.059469][ T4276] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 67.066563][ T4276] 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. [ 67.092566][ T4276] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 67.121580][ T4276] device hsr_slave_0 entered promiscuous mode [ 67.128693][ T4276] device hsr_slave_1 entered promiscuous mode [ 67.136128][ T4276] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 67.144038][ T4276] Cannot create hsr debugfs directory [ 67.968641][ T653] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 68.853992][ T4272] Bluetooth: hci0: command 0x0409 tx timeout [ 69.819250][ T653] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 69.879244][ T653] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 70.690580][ T4276] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 70.718776][ T4276] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 70.728042][ T4276] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 70.737075][ T4276] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 70.799545][ T4276] 8021q: adding VLAN 0 to HW filter on device bond0 [ 70.821875][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 70.830420][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 70.841254][ T4276] 8021q: adding VLAN 0 to HW filter on device team0 [ 70.866671][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 70.875510][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 70.885418][ T154] bridge0: port 1(bridge_slave_0) entered blocking state [ 70.892478][ T154] bridge0: port 1(bridge_slave_0) entered forwarding state [ 70.900276][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 70.910219][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 70.918834][ T154] bridge0: port 2(bridge_slave_1) entered blocking state [ 70.926077][ T154] bridge0: port 2(bridge_slave_1) entered forwarding state [ 70.934303][ T4290] Bluetooth: hci0: command 0x041b tx timeout [ 70.942743][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 70.951321][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 70.960034][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 70.969686][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 70.979148][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 70.989083][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 71.000342][ T4214] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 71.009705][ T4214] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 71.024651][ T653] device hsr_slave_0 left promiscuous mode [ 71.030998][ T653] device hsr_slave_1 left promiscuous mode [ 71.038664][ T653] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 71.048172][ T653] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 71.057522][ T653] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 71.065273][ T653] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 71.072877][ T653] device bridge_slave_1 left promiscuous mode [ 71.080229][ T653] bridge0: port 2(bridge_slave_1) entered disabled state [ 71.097091][ T653] device bridge_slave_0 left promiscuous mode [ 71.103420][ T653] bridge0: port 1(bridge_slave_0) entered disabled state [ 71.120909][ T653] device veth1_macvtap left promiscuous mode [ 71.127154][ T653] device veth0_macvtap left promiscuous mode [ 71.133808][ T653] device veth1_vlan left promiscuous mode [ 71.139655][ T653] device veth0_vlan left promiscuous mode [ 71.283419][ T653] team0 (unregistering): Port device team_slave_1 removed [ 71.296686][ T653] team0 (unregistering): Port device team_slave_0 removed [ 71.308767][ T653] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 71.322645][ T653] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 71.378760][ T653] bond0 (unregistering): Released all slaves [ 71.412037][ T4214] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 71.417124][ T1426] ieee802154 phy0 wpan0: encryption failed: -22 [ 71.420652][ T4214] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 71.426400][ T1426] ieee802154 phy1 wpan1: encryption failed: -22 [ 71.446980][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 71.455781][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 71.466911][ T4276] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 71.572799][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 71.580654][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 71.591980][ T4276] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 71.612026][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 71.621575][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 71.639086][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 71.647510][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 71.658729][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 71.666835][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 71.676988][ T4276] device veth0_vlan entered promiscuous mode [ 71.692716][ T4276] device veth1_vlan entered promiscuous mode [ 71.709532][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 71.717829][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 71.726382][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 71.735687][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 71.747531][ T4276] device veth0_macvtap entered promiscuous mode [ 71.757732][ T4276] device veth1_macvtap entered promiscuous mode [ 71.776792][ T4276] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 71.785672][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 71.794059][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 71.802073][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 71.814016][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 71.827669][ T4276] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 71.836049][ T4214] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 71.845869][ T4214] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 71.856997][ T4276] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 71.866502][ T4276] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 71.875995][ T4276] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 71.886441][ T4276] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 71.962821][ T4214] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 71.981451][ T4214] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 72.007407][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 72.018151][ T144] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 72.029902][ T144] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 72.038320][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 72.157176][ T4327] [ 72.159574][ T4327] ====================================================== [ 72.166611][ T4327] WARNING: possible circular locking dependency detected [ 72.173644][ T4327] syzkaller #0 Not tainted [ 72.178076][ T4327] ------------------------------------------------------ [ 72.185274][ T4327] syz.0.17/4327 is trying to acquire lock: [ 72.191091][ T4327] ffff8880734fcc28 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}, at: __flush_work+0xfa/0x210 [ 72.202262][ T4327] [ 72.202262][ T4327] but task is already holding lock: [ 72.209639][ T4327] ffffffff8d6c5de8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x18b/0x560 [ 72.219477][ T4327] [ 72.219477][ T4327] which lock already depends on the new lock. [ 72.219477][ T4327] [ 72.229904][ T4327] [ 72.229904][ T4327] the existing dependency chain (in reverse order) is: [ 72.238950][ T4327] [ 72.238950][ T4327] -> #4 (rfkill_global_mutex){+.+.}-{3:3}: [ 72.246972][ T4327] __mutex_lock_common+0x1e3/0x2400 [ 72.252721][ T4327] mutex_lock_nested+0x17/0x20 [ 72.258048][ T4327] rfkill_register+0x33/0x980 [ 72.263280][ T4327] hci_register_dev+0x452/0x970 [ 72.268720][ T4327] vhci_create_device+0x32c/0x5c0 [ 72.274278][ T4327] vhci_write+0x391/0x450 [ 72.279224][ T4327] vfs_write+0x745/0xd60 [ 72.284007][ T4327] ksys_write+0x152/0x260 [ 72.288871][ T4327] do_syscall_64+0x4c/0xa0 [ 72.293815][ T4327] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 72.300235][ T4327] [ 72.300235][ T4327] -> #3 (&data->open_mutex){+.+.}-{3:3}: [ 72.308059][ T4327] __mutex_lock_common+0x1e3/0x2400 [ 72.313784][ T4327] mutex_lock_nested+0x17/0x20 [ 72.319071][ T4327] vhci_send_frame+0x88/0x100 [ 72.324274][ T4327] hci_send_frame+0x1a9/0x2e0 [ 72.329471][ T4327] hci_tx_work+0x9f9/0x1710 [ 72.334603][ T4327] process_one_work+0x85f/0x1010 [ 72.340063][ T4327] worker_thread+0xaa6/0x1290 [ 72.345268][ T4327] kthread+0x436/0x520 [ 72.349860][ T4327] ret_from_fork+0x1f/0x30 [ 72.354800][ T4327] [ 72.354800][ T4327] -> #2 ((work_completion)(&hdev->tx_work)){+.+.}-{0:0}: [ 72.364010][ T4327] __flush_work+0x116/0x210 [ 72.369038][ T4327] hci_dev_do_close+0x1e7/0x1030 [ 72.374493][ T4327] hci_unregister_dev+0x2d7/0x580 [ 72.380038][ T4327] vhci_release+0x73/0xc0 [ 72.384891][ T4327] __fput+0x234/0x930 [ 72.389393][ T4327] task_work_run+0x125/0x1a0 [ 72.394507][ T4327] do_exit+0x626/0x20c0 [ 72.399184][ T4327] do_group_exit+0x12e/0x300 [ 72.404289][ T4327] get_signal+0x6ca/0x12c0 [ 72.409226][ T4327] arch_do_signal_or_restart+0xe7/0x12c0 [ 72.415388][ T4327] exit_to_user_mode_loop+0x9e/0x130 [ 72.421194][ T4327] exit_to_user_mode_prepare+0xee/0x180 [ 72.427260][ T4327] syscall_exit_to_user_mode+0x16/0x40 [ 72.433243][ T4327] do_syscall_64+0x58/0xa0 [ 72.438179][ T4327] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 72.444592][ T4327] [ 72.444592][ T4327] -> #1 (&hdev->req_lock){+.+.}-{3:3}: [ 72.452239][ T4327] __mutex_lock_common+0x1e3/0x2400 [ 72.457958][ T4327] mutex_lock_nested+0x17/0x20 [ 72.463241][ T4327] bg_scan_update+0x44/0x3b0 [ 72.468364][ T4327] process_one_work+0x85f/0x1010 [ 72.473832][ T4327] worker_thread+0xaa6/0x1290 [ 72.479028][ T4327] kthread+0x436/0x520 [ 72.483612][ T4327] ret_from_fork+0x1f/0x30 [ 72.488556][ T4327] [ 72.488556][ T4327] -> #0 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}: [ 72.498477][ T4327] __lock_acquire+0x2c42/0x7d10 [ 72.503857][ T4327] lock_acquire+0x19e/0x400 [ 72.508903][ T4327] __flush_work+0x116/0x210 [ 72.513926][ T4327] __cancel_work_timer+0x3f4/0x560 [ 72.519554][ T4327] hci_request_cancel_all+0xcc/0x300 [ 72.525449][ T4327] hci_dev_do_close+0x4e/0x1030 [ 72.530921][ T4327] hci_rfkill_set_block+0x10a/0x190 [ 72.536642][ T4327] rfkill_set_block+0x1c9/0x3d0 [ 72.542023][ T4327] rfkill_fop_write+0x452/0x560 [ 72.547415][ T4327] vfs_write+0x30b/0xd60 [ 72.552194][ T4327] ksys_write+0x152/0x260 [ 72.557052][ T4327] do_syscall_64+0x4c/0xa0 [ 72.561993][ T4327] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 72.568419][ T4327] [ 72.568419][ T4327] other info that might help us debug this: [ 72.568419][ T4327] [ 72.578648][ T4327] Chain exists of: [ 72.578648][ T4327] (work_completion)(&hdev->bg_scan_update) --> &data->open_mutex --> rfkill_global_mutex [ 72.578648][ T4327] [ 72.594380][ T4327] Possible unsafe locking scenario: [ 72.594380][ T4327] [ 72.601828][ T4327] CPU0 CPU1 [ 72.607192][ T4327] ---- ---- [ 72.612553][ T4327] lock(rfkill_global_mutex); [ 72.617413][ T4327] lock(&data->open_mutex); [ 72.624525][ T4327] lock(rfkill_global_mutex); [ 72.631807][ T4327] lock((work_completion)(&hdev->bg_scan_update)); [ 72.638395][ T4327] [ 72.638395][ T4327] *** DEADLOCK *** [ 72.638395][ T4327] [ 72.646533][ T4327] 1 lock held by syz.0.17/4327: [ 72.651384][ T4327] #0: ffffffff8d6c5de8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x18b/0x560 [ 72.661476][ T4327] [ 72.661476][ T4327] stack backtrace: [ 72.667358][ T4327] CPU: 0 PID: 4327 Comm: syz.0.17 Not tainted syzkaller #0 [ 72.674553][ T4327] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 72.684692][ T4327] Call Trace: [ 72.687980][ T4327] [ 72.690911][ T4327] dump_stack_lvl+0x188/0x250 [ 72.696125][ T4327] ? load_image+0x400/0x400 [ 72.700645][ T4327] ? show_regs_print_info+0x20/0x20 [ 72.705851][ T4327] ? print_circular_bug+0x12b/0x1a0 [ 72.711065][ T4327] check_noncircular+0x296/0x330 [ 72.716016][ T4327] ? look_up_lock_class+0x71/0x110 [ 72.721139][ T4327] ? add_chain_block+0x940/0x940 [ 72.726079][ T4327] ? lockdep_lock+0xf1/0x1f0 [ 72.730671][ T4327] ? __lock_acquire+0x12e8/0x7d10 [ 72.735713][ T4327] ? mark_lock+0x94/0x320 [ 72.740046][ T4327] __lock_acquire+0x2c42/0x7d10 [ 72.744904][ T4327] ? verify_lock_unused+0x140/0x140 [ 72.750105][ T4327] ? verify_lock_unused+0x140/0x140 [ 72.755304][ T4327] ? mark_lock+0x94/0x320 [ 72.759640][ T4327] lock_acquire+0x19e/0x400 [ 72.764145][ T4327] ? __flush_work+0xfa/0x210 [ 72.768828][ T4327] ? __lock_acquire+0x7d10/0x7d10 [ 72.773854][ T4327] ? read_lock_is_recursive+0x10/0x10 [ 72.779227][ T4327] ? start_flush_work+0x776/0x820 [ 72.784250][ T4327] __flush_work+0x116/0x210 [ 72.788751][ T4327] ? __flush_work+0xfa/0x210 [ 72.793351][ T4327] ? flush_work+0x20/0x20 [ 72.797683][ T4327] ? try_to_grab_pending+0xfa/0x7f0 [ 72.802881][ T4327] ? mark_lock+0x94/0x320 [ 72.807210][ T4327] ? lockdep_hardirqs_on_prepare+0x409/0x770 [ 72.813194][ T4327] ? lock_chain_count+0x20/0x20 [ 72.818054][ T4327] ? mark_lock+0x94/0x320 [ 72.822383][ T4327] ? __cancel_work_timer+0x36a/0x560 [ 72.827676][ T4327] __cancel_work_timer+0x3f4/0x560 [ 72.832788][ T4327] ? cancel_work_sync+0x20/0x20 [ 72.837640][ T4327] ? __cancel_work+0x1f9/0x2e0 [ 72.842495][ T4327] ? lockdep_hardirqs_on+0x94/0x140 [ 72.847695][ T4327] ? __cancel_work+0x27b/0x2e0 [ 72.852464][ T4327] ? cancel_work+0x20/0x20 [ 72.856879][ T4327] ? lock_chain_count+0x20/0x20 [ 72.861735][ T4327] hci_request_cancel_all+0xcc/0x300 [ 72.867028][ T4327] hci_dev_do_close+0x4e/0x1030 [ 72.871882][ T4327] ? _raw_spin_unlock_irqrestore+0xc1/0x120 [ 72.877780][ T4327] ? _raw_spin_unlock+0x40/0x40 [ 72.882648][ T4327] hci_rfkill_set_block+0x10a/0x190 [ 72.887879][ T4327] ? rcu_lock_release+0x20/0x20 [ 72.892753][ T4327] rfkill_set_block+0x1c9/0x3d0 [ 72.897624][ T4327] rfkill_fop_write+0x452/0x560 [ 72.902503][ T4327] ? rfkill_fop_read+0x520/0x520 [ 72.907444][ T4327] ? common_file_perm+0x140/0x1c0 [ 72.912471][ T4327] ? fsnotify_perm+0x5d/0x560 [ 72.917154][ T4327] ? security_file_permission+0x75/0xa0 [ 72.922699][ T4327] ? rfkill_fop_read+0x520/0x520 [ 72.927658][ T4327] vfs_write+0x30b/0xd60 [ 72.931911][ T4327] ? file_end_write+0x250/0x250 [ 72.936777][ T4327] ? __context_tracking_exit+0x4c/0x80 [ 72.942249][ T4327] ? __lock_acquire+0x7d10/0x7d10 [ 72.947279][ T4327] ? __fdget_pos+0x1e2/0x370 [ 72.951873][ T4327] ksys_write+0x152/0x260 [ 72.956203][ T4327] ? __ia32_sys_read+0x80/0x80 [ 72.960969][ T4327] ? lockdep_hardirqs_on+0x94/0x140 [ 72.966171][ T4327] do_syscall_64+0x4c/0xa0 [ 72.970589][ T4327] ? clear_bhb_loop+0x30/0x80 [ 72.975268][ T4327] ? clear_bhb_loop+0x30/0x80 [ 72.979946][ T4327] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 72.985944][ T4327] RIP: 0033:0x7f6358588dd9 [ 72.990362][ T4327] 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 [ 73.009970][ T4327] RSP: 002b:00007ffe540750e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 73.018385][ T4327] RAX: ffffffffffffffda RBX: 00007f6358801fa0 RCX: 00007f6358588dd9 [ 73.026369][ T4327] RDX: 0000000000000008 RSI: 0000200000000040 RDI: 0000000000000003 [ 73.034352][ T4327] RBP: 00007f635861ed69 R08: 0000000000000000 R09: 0000000000000000 [ 73.042323][ T4327] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 73.050301][ T4327] R13: 00007f6358801fac R14: 00007f6358801fa0 R15: 00007f6358801fa0 [ 73.058292][ T4327] [ 73.077444][ T4300] Bluetooth: hci0: command 0x040f tx timeout