Warning: Permanently added '10.128.0.162' (ED25519) to the list of known hosts. 2026/04/19 15:28:52 parsed 1 programs [ 66.395431][ T4187] cgroup: Unknown subsys name 'net' [ 66.522442][ T4187] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size = 127995904 bytes [ 68.014592][ T4187] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k FS [ 69.400968][ T4201] chnl_net:caif_netlink_parms(): no params data found [ 69.441272][ T4201] bridge0: port 1(bridge_slave_0) entered blocking state [ 69.448859][ T4201] bridge0: port 1(bridge_slave_0) entered disabled state [ 69.456928][ T4201] device bridge_slave_0 entered promiscuous mode [ 69.466378][ T4201] bridge0: port 2(bridge_slave_1) entered blocking state [ 69.473776][ T4201] bridge0: port 2(bridge_slave_1) entered disabled state [ 69.481668][ T4201] device bridge_slave_1 entered promiscuous mode [ 69.501353][ T4201] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 69.512592][ T4201] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 69.534009][ T4201] team0: Port device team_slave_0 added [ 69.541641][ T4201] team0: Port device team_slave_1 added [ 69.557284][ T4201] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 69.564436][ T4201] 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. [ 69.590743][ T4201] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 69.603217][ T4201] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 69.610388][ T4201] 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. [ 69.637028][ T4201] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 69.665065][ T4201] device hsr_slave_0 entered promiscuous mode [ 69.672450][ T4201] device hsr_slave_1 entered promiscuous mode [ 69.768683][ T4201] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 69.779866][ T4201] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 69.788988][ T4201] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 69.798970][ T4201] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 69.819655][ T4201] bridge0: port 2(bridge_slave_1) entered blocking state [ 69.826890][ T4201] bridge0: port 2(bridge_slave_1) entered forwarding state [ 69.834767][ T4201] bridge0: port 1(bridge_slave_0) entered blocking state [ 69.841888][ T4201] bridge0: port 1(bridge_slave_0) entered forwarding state [ 69.884791][ T4201] 8021q: adding VLAN 0 to HW filter on device bond0 [ 69.898040][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 69.909252][ T144] bridge0: port 1(bridge_slave_0) entered disabled state [ 69.918619][ T144] bridge0: port 2(bridge_slave_1) entered disabled state [ 69.926554][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 69.941582][ T4201] 8021q: adding VLAN 0 to HW filter on device team0 [ 69.959346][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 69.968136][ T9] bridge0: port 1(bridge_slave_0) entered blocking state [ 69.975296][ T9] bridge0: port 1(bridge_slave_0) entered forwarding state [ 69.983252][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 69.992321][ T9] bridge0: port 2(bridge_slave_1) entered blocking state [ 69.999487][ T9] bridge0: port 2(bridge_slave_1) entered forwarding state [ 70.010374][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 70.019745][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 70.031797][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 70.045539][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 70.057809][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 70.069627][ T4201] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 70.146430][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 70.154734][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 70.167572][ T4201] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 70.185067][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 70.203925][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 70.212623][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 70.220941][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 70.231765][ T4201] device veth0_vlan entered promiscuous mode [ 70.242277][ T4201] device veth1_vlan entered promiscuous mode [ 70.261676][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 70.270562][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 70.279474][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 70.290503][ T4201] device veth0_macvtap entered promiscuous mode [ 70.301417][ T4201] device veth1_macvtap entered promiscuous mode [ 70.316298][ T4201] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 70.325314][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 70.334487][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 70.346194][ T4201] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 70.354562][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 70.366292][ T4201] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 70.375886][ T4201] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 70.385393][ T4201] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 70.394626][ T4201] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 70.515533][ T4201] syz-executor (4201) used greatest stack depth: 20496 bytes left [ 70.539408][ T9] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 71.500674][ T1431] ieee802154 phy0 wpan0: encryption failed: -22 [ 71.507425][ T1431] ieee802154 phy1 wpan1: encryption failed: -22 [ 73.053118][ T9] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 75.432439][ T9] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 75.483929][ T9] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 76.263840][ T9] device hsr_slave_0 left promiscuous mode [ 76.279983][ T9] device hsr_slave_1 left promiscuous mode [ 76.296081][ T9] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 76.304229][ T9] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 76.315116][ T9] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 76.322946][ T9] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 76.332714][ T9] device bridge_slave_1 left promiscuous mode [ 76.340110][ T9] bridge0: port 2(bridge_slave_1) entered disabled state [ 76.357057][ T9] device bridge_slave_0 left promiscuous mode [ 76.364698][ T9] bridge0: port 1(bridge_slave_0) entered disabled state [ 76.390006][ T9] device veth1_macvtap left promiscuous mode [ 76.396473][ T9] device veth0_macvtap left promiscuous mode [ 76.403757][ T9] device veth1_vlan left promiscuous mode [ 76.411446][ T9] device veth0_vlan left promiscuous mode [ 76.563836][ T9] team0 (unregistering): Port device team_slave_1 removed [ 76.576096][ T9] team0 (unregistering): Port device team_slave_0 removed [ 76.591036][ T9] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 76.604221][ T9] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 76.656219][ T9] bond0 (unregistering): Released all slaves [ 77.928587][ T373] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 77.937673][ T373] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 77.964633][ T3066] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 78.001757][ T3066] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 78.012901][ T3066] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 78.030831][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 79.575983][ T9] ODEBUG: Out of memory. ODEBUG disabled 2026/04/19 15:29:07 executed programs: 0 [ 80.396088][ T4422] chnl_net:caif_netlink_parms(): no params data found [ 80.452955][ T4422] bridge0: port 1(bridge_slave_0) entered blocking state [ 80.460333][ T4422] bridge0: port 1(bridge_slave_0) entered disabled state [ 80.468367][ T4422] device bridge_slave_0 entered promiscuous mode [ 80.476835][ T4422] bridge0: port 2(bridge_slave_1) entered blocking state [ 80.484616][ T4422] bridge0: port 2(bridge_slave_1) entered disabled state [ 80.492565][ T4422] device bridge_slave_1 entered promiscuous mode [ 80.514895][ T4422] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 80.526795][ T4422] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 80.556307][ T4422] team0: Port device team_slave_0 added [ 80.565241][ T4422] team0: Port device team_slave_1 added [ 80.587360][ T4422] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 80.594552][ T4422] 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. [ 80.621210][ T4422] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 80.653677][ T4422] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 80.660822][ T4422] 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. [ 80.688144][ T4422] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 80.764236][ T4422] device hsr_slave_0 entered promiscuous mode [ 80.771352][ T4422] device hsr_slave_1 entered promiscuous mode [ 81.373287][ T4422] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 81.408170][ T4422] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 81.418154][ T4422] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 81.432253][ T4422] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 81.529269][ T4422] 8021q: adding VLAN 0 to HW filter on device bond0 [ 81.554616][ T3066] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 81.562942][ T3066] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 81.574777][ T4422] 8021q: adding VLAN 0 to HW filter on device team0 [ 81.596079][ T3066] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 81.605591][ T3066] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 81.615375][ T3066] bridge0: port 1(bridge_slave_0) entered blocking state [ 81.622520][ T3066] bridge0: port 1(bridge_slave_0) entered forwarding state [ 81.633517][ T3066] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 81.643384][ T3066] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 81.652709][ T3066] bridge0: port 2(bridge_slave_1) entered blocking state [ 81.659961][ T3066] bridge0: port 2(bridge_slave_1) entered forwarding state [ 81.715077][ T3066] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 81.723315][ T3066] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 81.733956][ T3066] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 81.744700][ T1111] cfg80211: failed to load regulatory.db [ 81.755776][ T3066] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 81.766210][ T3066] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 81.776621][ T3066] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 81.802145][ T3066] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 81.818011][ T3066] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 81.837769][ T3066] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 81.858335][ T3066] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 81.881433][ T373] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 81.897804][ T373] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 81.919807][ T4422] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 82.183096][ T3066] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 82.199222][ T3066] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 82.212519][ T4422] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 82.268549][ T373] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 82.278261][ T373] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 82.307818][ T21] Bluetooth: hci0: command 0x0409 tx timeout [ 82.327469][ T373] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 82.336045][ T373] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 82.363384][ T373] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 82.389036][ T373] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 82.412361][ T4422] device veth0_vlan entered promiscuous mode [ 82.443376][ T4422] device veth1_vlan entered promiscuous mode [ 82.512674][ T373] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 82.522339][ T373] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 82.551101][ T4422] device veth0_macvtap entered promiscuous mode [ 82.573017][ T4422] device veth1_macvtap entered promiscuous mode [ 82.609650][ T4422] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 82.629072][ T373] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 82.638157][ T373] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 82.667697][ T373] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 82.688894][ T373] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 82.716897][ T4422] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 82.739727][ T373] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 82.757881][ T373] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 82.779821][ T4422] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 82.796705][ T4422] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 82.812625][ T4422] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 82.821481][ T4422] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 82.917713][ T3066] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 82.928162][ T3066] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 82.949489][ T373] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 82.991493][ T373] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 83.008428][ T373] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 83.016039][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 83.174712][ T4505] [ 83.177103][ T4505] ====================================================== [ 83.184137][ T4505] WARNING: possible circular locking dependency detected [ 83.191343][ T4505] syzkaller #0 Not tainted [ 83.195777][ T4505] ------------------------------------------------------ [ 83.202903][ T4505] syz.0.17/4505 is trying to acquire lock: [ 83.208824][ T4505] ffff88807e5dcc28 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}, at: __flush_work+0xfa/0x210 [ 83.219906][ T4505] [ 83.219906][ T4505] but task is already holding lock: [ 83.227387][ T4505] ffffffff8d6c5de8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x18b/0x560 [ 83.237181][ T4505] [ 83.237181][ T4505] which lock already depends on the new lock. [ 83.237181][ T4505] [ 83.247603][ T4505] [ 83.247603][ T4505] the existing dependency chain (in reverse order) is: [ 83.256630][ T4505] [ 83.256630][ T4505] -> #4 (rfkill_global_mutex){+.+.}-{3:3}: [ 83.264821][ T4505] __mutex_lock_common+0x1e3/0x2400 [ 83.270566][ T4505] mutex_lock_nested+0x17/0x20 [ 83.275868][ T4505] rfkill_register+0x33/0x980 [ 83.281079][ T4505] hci_register_dev+0x452/0x970 [ 83.286456][ T4505] vhci_create_device+0x32c/0x5c0 [ 83.292007][ T4505] vhci_write+0x391/0x450 [ 83.296902][ T4505] vfs_write+0x745/0xd60 [ 83.301665][ T4505] ksys_write+0x152/0x260 [ 83.306515][ T4505] do_syscall_64+0x4c/0xa0 [ 83.311469][ T4505] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 83.317984][ T4505] [ 83.317984][ T4505] -> #3 (&data->open_mutex){+.+.}-{3:3}: [ 83.325809][ T4505] __mutex_lock_common+0x1e3/0x2400 [ 83.331692][ T4505] mutex_lock_nested+0x17/0x20 [ 83.336997][ T4505] vhci_send_frame+0x88/0x100 [ 83.342212][ T4505] hci_send_frame+0x1a9/0x2e0 [ 83.347415][ T4505] hci_tx_work+0x9f9/0x1710 [ 83.352527][ T4505] process_one_work+0x85f/0x1010 [ 83.357995][ T4505] worker_thread+0xaa6/0x1290 [ 83.363199][ T4505] kthread+0x436/0x520 [ 83.367878][ T4505] ret_from_fork+0x1f/0x30 [ 83.372833][ T4505] [ 83.372833][ T4505] -> #2 ((work_completion)(&hdev->tx_work)){+.+.}-{0:0}: [ 83.382037][ T4505] __flush_work+0x116/0x210 [ 83.387063][ T4505] hci_dev_do_close+0x1e7/0x1030 [ 83.392644][ T4505] hci_unregister_dev+0x2d7/0x580 [ 83.398569][ T4505] vhci_release+0x73/0xc0 [ 83.403451][ T4505] __fput+0x234/0x930 [ 83.408048][ T4505] task_work_run+0x125/0x1a0 [ 83.413165][ T4505] do_exit+0x626/0x20c0 [ 83.417884][ T4505] do_group_exit+0x12e/0x300 [ 83.422993][ T4505] get_signal+0x6ca/0x12c0 [ 83.427928][ T4505] arch_do_signal_or_restart+0xe7/0x12c0 [ 83.434260][ T4505] exit_to_user_mode_loop+0x9e/0x130 [ 83.440061][ T4505] exit_to_user_mode_prepare+0xee/0x180 [ 83.446129][ T4505] syscall_exit_to_user_mode+0x16/0x40 [ 83.452245][ T4505] do_syscall_64+0x58/0xa0 [ 83.457179][ T4505] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 83.463600][ T4505] [ 83.463600][ T4505] -> #1 (&hdev->req_lock){+.+.}-{3:3}: [ 83.471245][ T4505] __mutex_lock_common+0x1e3/0x2400 [ 83.477049][ T4505] mutex_lock_nested+0x17/0x20 [ 83.482341][ T4505] bg_scan_update+0x44/0x3b0 [ 83.487451][ T4505] process_one_work+0x85f/0x1010 [ 83.492995][ T4505] worker_thread+0xaa6/0x1290 [ 83.498622][ T4505] kthread+0x436/0x520 [ 83.503213][ T4505] ret_from_fork+0x1f/0x30 [ 83.508151][ T4505] [ 83.508151][ T4505] -> #0 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}: [ 83.517972][ T4505] __lock_acquire+0x2c42/0x7d10 [ 83.523517][ T4505] lock_acquire+0x19e/0x400 [ 83.528625][ T4505] __flush_work+0x116/0x210 [ 83.533645][ T4505] __cancel_work_timer+0x3f4/0x560 [ 83.539448][ T4505] hci_request_cancel_all+0xcc/0x300 [ 83.545259][ T4505] hci_dev_do_close+0x4e/0x1030 [ 83.550716][ T4505] hci_rfkill_set_block+0x10a/0x190 [ 83.556433][ T4505] rfkill_set_block+0x1c9/0x3d0 [ 83.561939][ T4505] rfkill_fop_write+0x452/0x560 [ 83.567311][ T4505] vfs_write+0x30b/0xd60 [ 83.572073][ T4505] ksys_write+0x152/0x260 [ 83.576920][ T4505] do_syscall_64+0x4c/0xa0 [ 83.581885][ T4505] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 83.588301][ T4505] [ 83.588301][ T4505] other info that might help us debug this: [ 83.588301][ T4505] [ 83.598523][ T4505] Chain exists of: [ 83.598523][ T4505] (work_completion)(&hdev->bg_scan_update) --> &data->open_mutex --> rfkill_global_mutex [ 83.598523][ T4505] [ 83.614345][ T4505] Possible unsafe locking scenario: [ 83.614345][ T4505] [ 83.621802][ T4505] CPU0 CPU1 [ 83.627173][ T4505] ---- ---- [ 83.632542][ T4505] lock(rfkill_global_mutex); [ 83.637311][ T4505] lock(&data->open_mutex); [ 83.644424][ T4505] lock(rfkill_global_mutex); [ 83.651811][ T4505] lock((work_completion)(&hdev->bg_scan_update)); [ 83.658482][ T4505] [ 83.658482][ T4505] *** DEADLOCK *** [ 83.658482][ T4505] [ 83.666632][ T4505] 1 lock held by syz.0.17/4505: [ 83.671498][ T4505] #0: ffffffff8d6c5de8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x18b/0x560 [ 83.681700][ T4505] [ 83.681700][ T4505] stack backtrace: [ 83.687602][ T4505] CPU: 0 PID: 4505 Comm: syz.0.17 Not tainted syzkaller #0 [ 83.694920][ T4505] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 83.705150][ T4505] Call Trace: [ 83.708431][ T4505] [ 83.711368][ T4505] dump_stack_lvl+0x188/0x250 [ 83.716051][ T4505] ? load_image+0x400/0x400 [ 83.720551][ T4505] ? show_regs_print_info+0x20/0x20 [ 83.725763][ T4505] ? print_circular_bug+0x12b/0x1a0 [ 83.731069][ T4505] check_noncircular+0x296/0x330 [ 83.736283][ T4505] ? look_up_lock_class+0x71/0x110 [ 83.741833][ T4505] ? add_chain_block+0x940/0x940 [ 83.746784][ T4505] ? lockdep_lock+0xf1/0x1f0 [ 83.751475][ T4505] ? __lock_acquire+0x12e8/0x7d10 [ 83.756531][ T4505] ? mark_lock+0x94/0x320 [ 83.760858][ T4505] __lock_acquire+0x2c42/0x7d10 [ 83.765718][ T4505] ? verify_lock_unused+0x140/0x140 [ 83.771039][ T4505] ? mark_lock+0x94/0x320 [ 83.775460][ T4505] lock_acquire+0x19e/0x400 [ 83.779965][ T4505] ? __flush_work+0xfa/0x210 [ 83.784562][ T4505] ? __lock_acquire+0x7d10/0x7d10 [ 83.789679][ T4505] ? read_lock_is_recursive+0x10/0x10 [ 83.795158][ T4505] ? start_flush_work+0x776/0x820 [ 83.800184][ T4505] __flush_work+0x116/0x210 [ 83.804694][ T4505] ? __flush_work+0xfa/0x210 [ 83.809382][ T4505] ? flush_work+0x20/0x20 [ 83.813800][ T4505] ? try_to_grab_pending+0xfa/0x7f0 [ 83.819351][ T4505] ? mark_lock+0x94/0x320 [ 83.823768][ T4505] ? lockdep_hardirqs_on_prepare+0x409/0x770 [ 83.829751][ T4505] ? lock_chain_count+0x20/0x20 [ 83.834696][ T4505] ? mark_lock+0x94/0x320 [ 83.839036][ T4505] ? __cancel_work_timer+0x36a/0x560 [ 83.844322][ T4505] __cancel_work_timer+0x3f4/0x560 [ 83.849442][ T4505] ? cancel_work_sync+0x20/0x20 [ 83.854294][ T4505] ? __cancel_work+0x1f9/0x2e0 [ 83.859158][ T4505] ? lockdep_hardirqs_on+0x94/0x140 [ 83.864454][ T4505] ? __cancel_work+0x27b/0x2e0 [ 83.869216][ T4505] ? cancel_work+0x20/0x20 [ 83.873635][ T4505] ? lock_chain_count+0x20/0x20 [ 83.878494][ T4505] hci_request_cancel_all+0xcc/0x300 [ 83.883957][ T4505] hci_dev_do_close+0x4e/0x1030 [ 83.888819][ T4505] ? _raw_spin_unlock_irqrestore+0xc1/0x120 [ 83.894809][ T4505] ? _raw_spin_unlock+0x40/0x40 [ 83.900014][ T4505] hci_rfkill_set_block+0x10a/0x190 [ 83.905215][ T4505] ? rcu_lock_release+0x20/0x20 [ 83.910098][ T4505] rfkill_set_block+0x1c9/0x3d0 [ 83.915077][ T4505] rfkill_fop_write+0x452/0x560 [ 83.919926][ T4505] ? rfkill_fop_read+0x520/0x520 [ 83.924867][ T4505] ? common_file_perm+0x140/0x1c0 [ 83.929900][ T4505] ? fsnotify_perm+0x5d/0x560 [ 83.934579][ T4505] ? security_file_permission+0x75/0xa0 [ 83.940479][ T4505] ? rfkill_fop_read+0x520/0x520 [ 83.945417][ T4505] vfs_write+0x30b/0xd60 [ 83.949668][ T4505] ? file_end_write+0x250/0x250 [ 83.954694][ T4505] ? __context_tracking_exit+0x4c/0x80 [ 83.960164][ T4505] ? __lock_acquire+0x7d10/0x7d10 [ 83.965219][ T4505] ? __fdget_pos+0x1e2/0x370 [ 83.969826][ T4505] ksys_write+0x152/0x260 [ 83.974165][ T4505] ? __ia32_sys_read+0x80/0x80 [ 83.978928][ T4505] ? lockdep_hardirqs_on+0x94/0x140 [ 83.984132][ T4505] do_syscall_64+0x4c/0xa0 [ 83.988548][ T4505] ? clear_bhb_loop+0x30/0x80 [ 83.993225][ T4505] ? clear_bhb_loop+0x30/0x80 [ 83.997931][ T4505] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 84.003828][ T4505] RIP: 0033:0x7f1581db0819 [ 84.008249][ T4505] 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 [ 84.028288][ T4505] RSP: 002b:00007ffe72d03488 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 84.036704][ T4505] RAX: ffffffffffffffda RBX: 00007f1582029fa0 RCX: 00007f1581db0819 [ 84.044680][ T4505] RDX: 0000000000000008 RSI: 0000200000000040 RDI: 0000000000000003 [ 84.052842][ T4505] RBP: 00007f1581e46c91 R08: 0000000000000000 R09: 0000000000000000 [ 84.060919][ T4505] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 84.068886][ T4505] R13: 00007f1582029fac R14: 00007f1582029fa0 R15: 00007f1582029fa0 [ 84.076960][ T4505]