Warning: Permanently added '10.128.1.167' (ED25519) to the list of known hosts. 2026/06/04 14:41:24 parsed 1 programs [ 68.007918][ T4199] cgroup: Unknown subsys name 'net' [ 68.113932][ T4199] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size = 127995904 bytes [ 69.586644][ T4199] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k FS [ 71.424066][ T154] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 71.434440][ T154] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 71.445471][ T4218] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 71.468090][ T154] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 71.476055][ T154] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 71.484193][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 71.547728][ T1432] ieee802154 phy0 wpan0: encryption failed: -22 [ 71.554662][ T1432] ieee802154 phy1 wpan1: encryption failed: -22 [ 71.896430][ T4227] syz-executor (4227) used greatest stack depth: 21136 bytes left [ 73.089121][ T4256] chnl_net:caif_netlink_parms(): no params data found [ 73.153257][ T4256] bridge0: port 1(bridge_slave_0) entered blocking state [ 73.162002][ T4256] bridge0: port 1(bridge_slave_0) entered disabled state [ 73.170743][ T4256] device bridge_slave_0 entered promiscuous mode [ 73.179868][ T4256] bridge0: port 2(bridge_slave_1) entered blocking state [ 73.187416][ T4256] bridge0: port 2(bridge_slave_1) entered disabled state [ 73.195886][ T4256] device bridge_slave_1 entered promiscuous mode [ 73.219791][ T4256] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 73.231732][ T4256] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 73.260716][ T4256] team0: Port device team_slave_0 added [ 73.269168][ T4256] team0: Port device team_slave_1 added [ 73.292712][ T4256] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 73.300217][ T4256] 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. [ 73.326687][ T4256] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 73.340347][ T4256] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 73.348016][ T4256] 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. [ 73.376305][ T4256] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 73.417923][ T4256] device hsr_slave_0 entered promiscuous mode [ 73.428326][ T4256] device hsr_slave_1 entered promiscuous mode [ 73.671732][ T4256] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 73.682507][ T4256] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 73.691546][ T4256] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 73.701071][ T4256] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 73.751802][ T4256] 8021q: adding VLAN 0 to HW filter on device bond0 [ 73.766588][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 73.776850][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 73.788753][ T4256] 8021q: adding VLAN 0 to HW filter on device team0 [ 73.798851][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 73.808232][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 73.817612][ T154] bridge0: port 1(bridge_slave_0) entered blocking state [ 73.825122][ T154] bridge0: port 1(bridge_slave_0) entered forwarding state [ 73.833816][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 73.844499][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 73.853856][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 73.863091][ T154] bridge0: port 2(bridge_slave_1) entered blocking state [ 73.870522][ T154] bridge0: port 2(bridge_slave_1) entered forwarding state [ 73.882077][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 73.894725][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 73.907707][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 73.918183][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 73.927574][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 73.958778][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 73.968019][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 73.982829][ T4256] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 73.994459][ T4256] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 74.007912][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 74.017135][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 74.026748][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 74.036771][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 74.045911][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 74.161010][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 74.169559][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 74.182720][ T4256] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 74.221691][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 74.230910][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 74.250982][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 74.260223][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 74.269575][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 74.280402][ T4256] device veth0_vlan entered promiscuous mode [ 74.309311][ T4256] device veth1_vlan entered promiscuous mode [ 74.328820][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 74.337421][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 74.346634][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 74.359182][ T4256] device veth0_macvtap entered promiscuous mode [ 74.388619][ T4256] device veth1_macvtap entered promiscuous mode [ 74.405773][ T4256] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 74.413776][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 74.423914][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 74.433905][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 74.446445][ T4256] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 74.454468][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 74.463878][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 74.476847][ T4256] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 74.486120][ T4256] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 74.496159][ T4256] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 74.505681][ T4256] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 74.620901][ T4256] syz-executor (4256) used greatest stack depth: 21104 bytes left 2026/06/04 14:41:33 executed programs: 0 [ 75.568524][ T4306] chnl_net:caif_netlink_parms(): no params data found [ 75.632139][ T4306] bridge0: port 1(bridge_slave_0) entered blocking state [ 75.639504][ T4306] bridge0: port 1(bridge_slave_0) entered disabled state [ 75.647813][ T4306] device bridge_slave_0 entered promiscuous mode [ 75.656753][ T4306] bridge0: port 2(bridge_slave_1) entered blocking state [ 75.664091][ T4306] bridge0: port 2(bridge_slave_1) entered disabled state [ 75.672451][ T4306] device bridge_slave_1 entered promiscuous mode [ 75.697869][ T4306] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 75.711299][ T4306] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 75.739981][ T4306] team0: Port device team_slave_0 added [ 75.748087][ T4306] team0: Port device team_slave_1 added [ 75.770907][ T4306] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 75.778537][ T4306] 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. [ 75.806188][ T4306] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 75.823117][ T4306] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 75.830405][ T4306] 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. [ 75.856830][ T4306] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 75.899770][ T4306] device hsr_slave_0 entered promiscuous mode [ 75.907701][ T4306] device hsr_slave_1 entered promiscuous mode [ 75.914714][ T4306] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 75.923646][ T4306] Cannot create hsr debugfs directory [ 76.022114][ T4306] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 77.466551][ T13] Bluetooth: hci0: command 0x0409 tx timeout [ 78.811949][ T4306] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 79.310280][ T4306] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 79.372361][ T4306] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 79.476383][ T4306] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 79.487501][ T4306] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 79.507582][ T4306] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 79.517252][ T4306] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 79.545335][ T1109] Bluetooth: hci0: command 0x041b tx timeout [ 79.576430][ T4306] 8021q: adding VLAN 0 to HW filter on device bond0 [ 79.589969][ T4276] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 79.598171][ T4276] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 79.609412][ T4306] 8021q: adding VLAN 0 to HW filter on device team0 [ 79.630846][ T4276] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 79.639849][ T4276] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 79.649260][ T4276] bridge0: port 1(bridge_slave_0) entered blocking state [ 79.656479][ T4276] bridge0: port 1(bridge_slave_0) entered forwarding state [ 79.677042][ T4276] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 79.685285][ T4276] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 79.694203][ T4276] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 79.703139][ T4276] bridge0: port 2(bridge_slave_1) entered blocking state [ 79.710273][ T4276] bridge0: port 2(bridge_slave_1) entered forwarding state [ 79.718958][ T4276] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 79.745596][ T4276] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 79.755198][ T4276] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 79.764296][ T4276] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 79.775941][ T4276] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 79.786641][ T4276] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 79.795972][ T4276] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 79.804750][ T4276] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 79.813894][ T4276] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 79.826124][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 79.835240][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 79.846121][ T4306] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 79.947758][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 79.955654][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 79.980551][ T4306] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 79.997777][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 80.007163][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 80.037898][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 80.046460][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 80.056427][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 80.064544][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 80.078221][ T4306] device veth0_vlan entered promiscuous mode [ 80.092352][ T9] device hsr_slave_0 left promiscuous mode [ 80.099351][ T9] device hsr_slave_1 left promiscuous mode [ 80.107123][ T9] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 80.114818][ T9] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 80.125697][ T9] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 80.133963][ T9] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 80.142168][ T9] device bridge_slave_1 left promiscuous mode [ 80.149458][ T9] bridge0: port 2(bridge_slave_1) entered disabled state [ 80.161685][ T9] device bridge_slave_0 left promiscuous mode [ 80.168885][ T9] bridge0: port 1(bridge_slave_0) entered disabled state [ 80.186166][ T9] device veth1_macvtap left promiscuous mode [ 80.192490][ T9] device veth0_macvtap left promiscuous mode [ 80.199305][ T9] device veth1_vlan left promiscuous mode [ 80.206859][ T9] device veth0_vlan left promiscuous mode [ 80.352857][ T9] team0 (unregistering): Port device team_slave_1 removed [ 80.367251][ T9] team0 (unregistering): Port device team_slave_0 removed [ 80.381792][ T9] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 80.395473][ T9] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 80.454641][ T9] bond0 (unregistering): Released all slaves [ 80.522102][ T4306] device veth1_vlan entered promiscuous mode [ 80.543713][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 80.552244][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 80.561803][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 80.573544][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 80.584522][ T4306] device veth0_macvtap entered promiscuous mode [ 80.596036][ T4306] device veth1_macvtap entered promiscuous mode [ 80.603918][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 80.613016][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 80.637262][ T4306] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 80.644797][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 80.653792][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 80.666787][ T4306] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 80.676313][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 80.686586][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 80.699214][ T4306] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 80.708518][ T4306] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 80.717664][ T4306] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 80.727099][ T4306] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 80.803234][ T4276] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 80.814290][ T4276] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 80.837233][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 80.846465][ T4276] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 80.854903][ T4276] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 80.863960][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 80.970008][ T4323] [ 80.972393][ T4323] ====================================================== [ 80.979620][ T4323] WARNING: possible circular locking dependency detected [ 80.986660][ T4323] syzkaller #0 Not tainted [ 80.991208][ T4323] ------------------------------------------------------ [ 80.998982][ T4323] syz.0.17/4323 is trying to acquire lock: [ 81.005036][ T4323] ffff888028899028 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}, at: __flush_work+0xfa/0x210 [ 81.016729][ T4323] [ 81.016729][ T4323] but task is already holding lock: [ 81.025211][ T4323] ffffffff8d6c73e8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x18b/0x560 [ 81.035301][ T4323] [ 81.035301][ T4323] which lock already depends on the new lock. [ 81.035301][ T4323] [ 81.046373][ T4323] [ 81.046373][ T4323] the existing dependency chain (in reverse order) is: [ 81.056106][ T4323] [ 81.056106][ T4323] -> #4 (rfkill_global_mutex){+.+.}-{3:3}: [ 81.064663][ T4323] __mutex_lock_common+0x1e3/0x2400 [ 81.072986][ T4323] mutex_lock_nested+0x17/0x20 [ 81.079171][ T4323] rfkill_register+0x33/0x980 [ 81.085400][ T4323] hci_register_dev+0x452/0x970 [ 81.091364][ T4323] vhci_create_device+0x32c/0x5c0 [ 81.097749][ T4323] vhci_write+0x391/0x450 [ 81.103075][ T4323] vfs_write+0x745/0xd60 [ 81.108626][ T4323] ksys_write+0x152/0x260 [ 81.114201][ T4323] do_syscall_64+0x4c/0xa0 [ 81.119696][ T4323] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 81.126375][ T4323] [ 81.126375][ T4323] -> #3 (&data->open_mutex){+.+.}-{3:3}: [ 81.134780][ T4323] __mutex_lock_common+0x1e3/0x2400 [ 81.140907][ T4323] mutex_lock_nested+0x17/0x20 [ 81.146499][ T4323] vhci_send_frame+0x88/0x100 [ 81.152022][ T4323] hci_send_frame+0x1a9/0x2e0 [ 81.157621][ T4323] hci_tx_work+0x9f9/0x1710 [ 81.162680][ T4323] process_one_work+0x85f/0x1010 [ 81.168171][ T4323] worker_thread+0xaa6/0x1290 [ 81.173763][ T4323] kthread+0x436/0x520 [ 81.178744][ T4323] ret_from_fork+0x1f/0x30 [ 81.183807][ T4323] [ 81.183807][ T4323] -> #2 ((work_completion)(&hdev->tx_work)){+.+.}-{0:0}: [ 81.193678][ T4323] __flush_work+0x116/0x210 [ 81.198739][ T4323] hci_dev_do_close+0x1e7/0x1030 [ 81.204504][ T4323] hci_unregister_dev+0x2eb/0x590 [ 81.210176][ T4323] vhci_release+0x73/0xc0 [ 81.215072][ T4323] __fput+0x234/0x930 [ 81.219759][ T4323] task_work_run+0x125/0x1a0 [ 81.225182][ T4323] do_exit+0x626/0x20c0 [ 81.230093][ T4323] do_group_exit+0x12e/0x300 [ 81.235517][ T4323] get_signal+0x6d6/0x12d0 [ 81.240683][ T4323] arch_do_signal_or_restart+0xe7/0x12c0 [ 81.247331][ T4323] exit_to_user_mode_loop+0x9e/0x130 [ 81.253365][ T4323] exit_to_user_mode_prepare+0xee/0x180 [ 81.260012][ T4323] syscall_exit_to_user_mode+0x16/0x40 [ 81.266471][ T4323] do_syscall_64+0x58/0xa0 [ 81.272043][ T4323] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 81.278673][ T4323] [ 81.278673][ T4323] -> #1 (&hdev->req_lock){+.+.}-{3:3}: [ 81.287073][ T4323] __mutex_lock_common+0x1e3/0x2400 [ 81.293210][ T4323] mutex_lock_nested+0x17/0x20 [ 81.299516][ T4323] bg_scan_update+0x44/0x3b0 [ 81.305721][ T4323] process_one_work+0x85f/0x1010 [ 81.311218][ T4323] worker_thread+0xaa6/0x1290 [ 81.317554][ T4323] kthread+0x436/0x520 [ 81.322559][ T4323] ret_from_fork+0x1f/0x30 [ 81.327528][ T4323] [ 81.327528][ T4323] -> #0 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}: [ 81.337731][ T4323] __lock_acquire+0x2c42/0x7d10 [ 81.343141][ T4323] lock_acquire+0x19e/0x400 [ 81.348371][ T4323] __flush_work+0x116/0x210 [ 81.353597][ T4323] __cancel_work_timer+0x3f4/0x560 [ 81.359349][ T4323] hci_request_cancel_all+0xcc/0x300 [ 81.365537][ T4323] hci_dev_do_close+0x4e/0x1030 [ 81.371232][ T4323] hci_rfkill_set_block+0x10a/0x190 [ 81.377523][ T4323] rfkill_set_block+0x1c9/0x3d0 [ 81.383294][ T4323] rfkill_fop_write+0x452/0x560 [ 81.389128][ T4323] vfs_write+0x30b/0xd60 [ 81.394104][ T4323] ksys_write+0x152/0x260 [ 81.398983][ T4323] do_syscall_64+0x4c/0xa0 [ 81.403955][ T4323] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 81.410927][ T4323] [ 81.410927][ T4323] other info that might help us debug this: [ 81.410927][ T4323] [ 81.421552][ T4323] Chain exists of: [ 81.421552][ T4323] (work_completion)(&hdev->bg_scan_update) --> &data->open_mutex --> rfkill_global_mutex [ 81.421552][ T4323] [ 81.438309][ T4323] Possible unsafe locking scenario: [ 81.438309][ T4323] [ 81.446219][ T4323] CPU0 CPU1 [ 81.451896][ T4323] ---- ---- [ 81.457576][ T4323] lock(rfkill_global_mutex); [ 81.462724][ T4323] lock(&data->open_mutex); [ 81.470338][ T4323] lock(rfkill_global_mutex); [ 81.477913][ T4323] lock((work_completion)(&hdev->bg_scan_update)); [ 81.484752][ T4323] [ 81.484752][ T4323] *** DEADLOCK *** [ 81.484752][ T4323] [ 81.493381][ T4323] 1 lock held by syz.0.17/4323: [ 81.498524][ T4323] #0: ffffffff8d6c73e8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x18b/0x560 [ 81.508834][ T4323] [ 81.508834][ T4323] stack backtrace: [ 81.514892][ T4323] CPU: 1 PID: 4323 Comm: syz.0.17 Not tainted syzkaller #0 [ 81.522646][ T4323] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 [ 81.533611][ T4323] Call Trace: [ 81.536930][ T4323] [ 81.540233][ T4323] dump_stack_lvl+0x188/0x250 [ 81.545425][ T4323] ? load_image+0x400/0x400 [ 81.550577][ T4323] ? show_regs_print_info+0x20/0x20 [ 81.556081][ T4323] ? print_circular_bug+0x12b/0x1a0 [ 81.561423][ T4323] check_noncircular+0x296/0x330 [ 81.566750][ T4323] ? look_up_lock_class+0x71/0x110 [ 81.572230][ T4323] ? add_chain_block+0x940/0x940 [ 81.577287][ T4323] ? lockdep_lock+0xf1/0x1f0 [ 81.582000][ T4323] ? __lock_acquire+0x12e8/0x7d10 [ 81.587486][ T4323] ? mark_lock+0x94/0x320 [ 81.591938][ T4323] ? _find_first_zero_bit+0xce/0xf0 [ 81.597256][ T4323] __lock_acquire+0x2c42/0x7d10 [ 81.602153][ T4323] ? verify_lock_unused+0x140/0x140 [ 81.607479][ T4323] ? verify_lock_unused+0x140/0x140 [ 81.612709][ T4323] ? mark_lock+0x94/0x320 [ 81.617257][ T4323] lock_acquire+0x19e/0x400 [ 81.621886][ T4323] ? __flush_work+0xfa/0x210 [ 81.626686][ T4323] ? __lock_acquire+0x7d10/0x7d10 [ 81.628300][ T13] Bluetooth: hci0: command 0x040f tx timeout [ 81.631827][ T4323] ? read_lock_is_recursive+0x10/0x10 [ 81.643439][ T4323] ? start_flush_work+0x776/0x820 [ 81.648608][ T4323] __flush_work+0x116/0x210 [ 81.653317][ T4323] ? __flush_work+0xfa/0x210 [ 81.658031][ T4323] ? flush_work+0x20/0x20 [ 81.662652][ T4323] ? try_to_grab_pending+0xfa/0x7f0 [ 81.667962][ T4323] ? mark_lock+0x94/0x320 [ 81.672410][ T4323] ? lockdep_hardirqs_on_prepare+0x409/0x770 [ 81.678870][ T4323] ? lock_chain_count+0x20/0x20 [ 81.684018][ T4323] ? mark_lock+0x94/0x320 [ 81.688619][ T4323] ? __cancel_work_timer+0x36a/0x560 [ 81.693948][ T4323] __cancel_work_timer+0x3f4/0x560 [ 81.699350][ T4323] ? cancel_work_sync+0x20/0x20 [ 81.704502][ T4323] ? __cancel_work+0x1f9/0x2e0 [ 81.709427][ T4323] ? lockdep_hardirqs_on+0x94/0x140 [ 81.715240][ T4323] ? __cancel_work+0x27b/0x2e0 [ 81.720050][ T4323] ? cancel_work+0x20/0x20 [ 81.724508][ T4323] ? lock_chain_count+0x20/0x20 [ 81.729678][ T4323] hci_request_cancel_all+0xcc/0x300 [ 81.735011][ T4323] hci_dev_do_close+0x4e/0x1030 [ 81.739984][ T4323] ? _raw_spin_unlock_irqrestore+0xc1/0x120 [ 81.746037][ T4323] ? _raw_spin_unlock+0x40/0x40 [ 81.750920][ T4323] hci_rfkill_set_block+0x10a/0x190 [ 81.756150][ T4323] ? rcu_lock_release+0x20/0x20 [ 81.761046][ T4323] rfkill_set_block+0x1c9/0x3d0 [ 81.766103][ T4323] rfkill_fop_write+0x452/0x560 [ 81.771074][ T4323] ? rfkill_fop_read+0x520/0x520 [ 81.776216][ T4323] ? common_file_perm+0xb0/0x1c0 [ 81.781377][ T4323] ? fsnotify_perm+0x5d/0x560 [ 81.786086][ T4323] ? security_file_permission+0x75/0xa0 [ 81.791761][ T4323] ? rfkill_fop_read+0x520/0x520 [ 81.796731][ T4323] vfs_write+0x30b/0xd60 [ 81.801016][ T4323] ? file_end_write+0x250/0x250 [ 81.806338][ T4323] ? __context_tracking_exit+0x4c/0x80 [ 81.812089][ T4323] ? __lock_acquire+0x7d10/0x7d10 [ 81.817236][ T4323] ? __fdget_pos+0x1e2/0x370 [ 81.821947][ T4323] ksys_write+0x152/0x260 [ 81.826575][ T4323] ? __ia32_sys_read+0x80/0x80 [ 81.831723][ T4323] ? lockdep_hardirqs_on+0x94/0x140 [ 81.837058][ T4323] do_syscall_64+0x4c/0xa0 [ 81.841684][ T4323] ? clear_bhb_loop+0x30/0x80 [ 81.846571][ T4323] ? clear_bhb_loop+0x30/0x80 [ 81.851388][ T4323] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 81.857760][ T4323] RIP: 0033:0x7f544eaa8e59 [ 81.862768][ T4323] 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 [ 81.883351][ T4323] RSP: 002b:00007ffe56d41928 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 81.891795][ T4323] RAX: ffffffffffffffda RBX: 00007f544ed21fa0 RCX: 00007f544eaa8e59 [ 81.899880][ T4323] RDX: 0000000000000008 RSI: 00002000000000c0 RDI: 0000000000000003 [ 81.907887][ T4323] RBP: 00007f544eb3ed6f R08: 0000000000000000 R09: 0000000000000000 [ 81.915884][ T4323] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 81.923883][ T4323] R13: 00007f544ed21fac R14: 00007f544ed21fa0 R15: 00007f544ed21fa0 [ 81.931977][ T4323]