Warning: Permanently added '10.128.1.52' (ED25519) to the list of known hosts. 2026/04/26 05:06:21 parsed 1 programs [ 66.037071][ T4187] cgroup: Unknown subsys name 'net' [ 66.173542][ T4187] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size = 127995904 bytes [ 67.715490][ T4187] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k FS [ 70.891741][ T4240] chnl_net:caif_netlink_parms(): no params data found [ 70.959328][ T4240] bridge0: port 1(bridge_slave_0) entered blocking state [ 70.967425][ T4240] bridge0: port 1(bridge_slave_0) entered disabled state [ 70.977371][ T4240] device bridge_slave_0 entered promiscuous mode [ 70.987975][ T4240] bridge0: port 2(bridge_slave_1) entered blocking state [ 70.995210][ T4240] bridge0: port 2(bridge_slave_1) entered disabled state [ 71.005162][ T4240] device bridge_slave_1 entered promiscuous mode [ 71.035373][ T4240] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 71.047251][ T4240] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 71.078143][ T4240] team0: Port device team_slave_0 added [ 71.086802][ T4240] team0: Port device team_slave_1 added [ 71.113509][ T4240] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 71.120931][ T4240] 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. [ 71.147692][ T4240] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 71.160818][ T4240] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 71.168073][ T4240] 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. [ 71.194298][ T4240] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 71.233279][ T4240] device hsr_slave_0 entered promiscuous mode [ 71.241056][ T4240] device hsr_slave_1 entered promiscuous mode [ 71.372842][ T4240] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 71.386423][ T4240] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 71.396010][ T4240] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 71.405209][ T4240] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 71.435535][ T4240] bridge0: port 2(bridge_slave_1) entered blocking state [ 71.446228][ T4240] bridge0: port 2(bridge_slave_1) entered forwarding state [ 71.455268][ T4240] bridge0: port 1(bridge_slave_0) entered blocking state [ 71.462548][ T4240] bridge0: port 1(bridge_slave_0) entered forwarding state [ 71.476560][ T1421] ieee802154 phy0 wpan0: encryption failed: -22 [ 71.483650][ T1421] ieee802154 phy1 wpan1: encryption failed: -22 [ 71.534688][ T4240] 8021q: adding VLAN 0 to HW filter on device bond0 [ 71.549907][ T1158] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 71.572925][ T1158] bridge0: port 1(bridge_slave_0) entered disabled state [ 71.586329][ T1158] bridge0: port 2(bridge_slave_1) entered disabled state [ 71.601326][ T1158] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 71.630414][ T4240] 8021q: adding VLAN 0 to HW filter on device team0 [ 71.642510][ T1158] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 71.651348][ T1158] bridge0: port 1(bridge_slave_0) entered blocking state [ 71.658706][ T1158] bridge0: port 1(bridge_slave_0) entered forwarding state [ 71.671431][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 71.679998][ T144] bridge0: port 2(bridge_slave_1) entered blocking state [ 71.687242][ T144] bridge0: port 2(bridge_slave_1) entered forwarding state [ 71.707375][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 71.719309][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 71.730342][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 71.743123][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 71.753283][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 71.764601][ T4240] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 71.844034][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 71.852322][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 71.880987][ T4240] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 71.896334][ T1158] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 71.907147][ T1158] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 71.924513][ T1158] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 71.933709][ T1158] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 71.946339][ T4240] device veth0_vlan entered promiscuous mode [ 71.955594][ T1158] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 71.964122][ T1158] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 71.989017][ T4240] device veth1_vlan entered promiscuous mode [ 72.007852][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 72.016269][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 72.024762][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 72.034438][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 72.045346][ T4240] device veth0_macvtap entered promiscuous mode [ 72.068285][ T4240] device veth1_macvtap entered promiscuous mode [ 72.084819][ T4240] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 72.092758][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 72.101918][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 72.110218][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 72.120476][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 72.132188][ T4240] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 72.141156][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 72.150093][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 72.183635][ T4240] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 72.193053][ T4240] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 72.202127][ T4240] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 72.211412][ T4240] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 72.315828][ T4240] syz-executor (4240) used greatest stack depth: 20784 bytes left [ 72.508634][ T154] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 72.516988][ T154] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 72.528810][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 72.557557][ T154] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 72.565643][ T154] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 72.574142][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2026/04/26 05:06:31 executed programs: 0 [ 74.033352][ T4292] chnl_net:caif_netlink_parms(): no params data found [ 74.105709][ T4292] bridge0: port 1(bridge_slave_0) entered blocking state [ 74.119310][ T4292] bridge0: port 1(bridge_slave_0) entered disabled state [ 74.129475][ T4292] device bridge_slave_0 entered promiscuous mode [ 74.139958][ T4292] bridge0: port 2(bridge_slave_1) entered blocking state [ 74.149435][ T4292] bridge0: port 2(bridge_slave_1) entered disabled state [ 74.157506][ T4292] device bridge_slave_1 entered promiscuous mode [ 74.181617][ T4292] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 74.192790][ T4292] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 74.222034][ T4292] team0: Port device team_slave_0 added [ 74.233316][ T4292] team0: Port device team_slave_1 added [ 74.263046][ T4292] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 74.270558][ T4292] 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. [ 74.297932][ T4292] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 74.310728][ T4292] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 74.317795][ T4292] 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. [ 74.344553][ T4292] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 74.382506][ T4292] device hsr_slave_0 entered promiscuous mode [ 74.390664][ T4292] device hsr_slave_1 entered promiscuous mode [ 74.397110][ T4292] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 74.405167][ T4292] Cannot create hsr debugfs directory [ 74.508659][ T4292] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 75.949079][ T4257] Bluetooth: hci0: command 0x0409 tx timeout [ 77.904562][ T4292] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 77.944873][ T4292] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 78.018035][ T4305] Bluetooth: hci0: command 0x041b tx timeout [ 78.031581][ T4292] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 78.200813][ T4292] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 78.210100][ T4292] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 78.219136][ T4292] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 78.230344][ T4292] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 78.305201][ T4292] 8021q: adding VLAN 0 to HW filter on device bond0 [ 78.316688][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 78.325561][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 78.336769][ T4292] 8021q: adding VLAN 0 to HW filter on device team0 [ 78.348363][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 78.357214][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 78.366185][ T144] bridge0: port 1(bridge_slave_0) entered blocking state [ 78.373400][ T144] bridge0: port 1(bridge_slave_0) entered forwarding state [ 78.408382][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 78.416700][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 78.425769][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 78.434608][ T144] bridge0: port 2(bridge_slave_1) entered blocking state [ 78.441893][ T144] bridge0: port 2(bridge_slave_1) entered forwarding state [ 78.451975][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 78.460784][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 78.469888][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 78.479422][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 78.488377][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 78.497262][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 78.525954][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 78.536632][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 78.545814][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 78.554795][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 78.563882][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 78.574532][ T4292] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 78.649971][ T3088] device hsr_slave_0 left promiscuous mode [ 78.657270][ T3088] device hsr_slave_1 left promiscuous mode [ 78.665104][ T3088] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 78.674075][ T3088] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 78.684119][ T3088] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 78.692344][ T3088] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 78.701232][ T3088] device bridge_slave_1 left promiscuous mode [ 78.708425][ T3088] bridge0: port 2(bridge_slave_1) entered disabled state [ 78.721691][ T3088] device bridge_slave_0 left promiscuous mode [ 78.729696][ T3088] bridge0: port 1(bridge_slave_0) entered disabled state [ 78.746815][ T3088] device veth1_macvtap left promiscuous mode [ 78.753413][ T3088] device veth0_macvtap left promiscuous mode [ 78.760312][ T3088] device veth1_vlan left promiscuous mode [ 78.766504][ T3088] device veth0_vlan left promiscuous mode [ 78.916119][ T3088] team0 (unregistering): Port device team_slave_1 removed [ 78.931910][ T3088] team0 (unregistering): Port device team_slave_0 removed [ 78.945846][ T3088] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 78.962857][ T3088] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 79.015607][ T3088] bond0 (unregistering): Released all slaves [ 79.070106][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 79.077578][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 79.092025][ T4292] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 79.116740][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 79.125970][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 79.146581][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 79.157126][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 79.169748][ T4292] device veth0_vlan entered promiscuous mode [ 79.176432][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 79.185527][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 79.210884][ T4292] device veth1_vlan entered promiscuous mode [ 79.230488][ T1158] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 79.240526][ T1158] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 79.249280][ T1158] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 79.258951][ T1158] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 79.270484][ T4292] device veth0_macvtap entered promiscuous mode [ 79.282845][ T4292] device veth1_macvtap entered promiscuous mode [ 79.308623][ T4292] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 79.316544][ T1158] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 79.325372][ T1158] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 79.333946][ T1158] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 79.343080][ T1158] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 79.357318][ T4292] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 79.365403][ T4308] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 79.375229][ T4308] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 79.386797][ T4292] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 79.395690][ T4292] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 79.404841][ T4292] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 79.413885][ T4292] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 79.488886][ T4308] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 79.497155][ T4308] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 79.515522][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 79.536170][ T144] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 79.546611][ T144] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 79.554691][ T1158] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 79.709907][ T4313] [ 79.712497][ T4313] ====================================================== [ 79.719633][ T4313] WARNING: possible circular locking dependency detected [ 79.726765][ T4313] syzkaller #0 Not tainted [ 79.731216][ T4313] ------------------------------------------------------ [ 79.738426][ T4313] syz.0.17/4313 is trying to acquire lock: [ 79.744355][ T4313] ffff88807755cc28 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}, at: __flush_work+0xfa/0x210 [ 79.755755][ T4313] [ 79.755755][ T4313] but task is already holding lock: [ 79.763249][ T4313] ffffffff8d6c5de8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x18b/0x560 [ 79.773045][ T4313] [ 79.773045][ T4313] which lock already depends on the new lock. [ 79.773045][ T4313] [ 79.783778][ T4313] [ 79.783778][ T4313] the existing dependency chain (in reverse order) is: [ 79.792986][ T4313] [ 79.792986][ T4313] -> #4 (rfkill_global_mutex){+.+.}-{3:3}: [ 79.801012][ T4313] __mutex_lock_common+0x1e3/0x2400 [ 79.806765][ T4313] mutex_lock_nested+0x17/0x20 [ 79.812081][ T4313] rfkill_register+0x33/0x980 [ 79.817401][ T4313] hci_register_dev+0x452/0x970 [ 79.822986][ T4313] vhci_create_device+0x32c/0x5c0 [ 79.828567][ T4313] vhci_write+0x391/0x450 [ 79.833453][ T4313] vfs_write+0x745/0xd60 [ 79.838242][ T4313] ksys_write+0x152/0x260 [ 79.843117][ T4313] do_syscall_64+0x4c/0xa0 [ 79.848177][ T4313] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 79.854628][ T4313] [ 79.854628][ T4313] -> #3 (&data->open_mutex){+.+.}-{3:3}: [ 79.862486][ T4313] __mutex_lock_common+0x1e3/0x2400 [ 79.868584][ T4313] mutex_lock_nested+0x17/0x20 [ 79.873905][ T4313] vhci_send_frame+0x88/0x100 [ 79.879316][ T4313] hci_send_frame+0x1a9/0x2e0 [ 79.884720][ T4313] hci_tx_work+0x9f9/0x1710 [ 79.889872][ T4313] process_one_work+0x85f/0x1010 [ 79.895354][ T4313] worker_thread+0xaa6/0x1290 [ 79.900876][ T4313] kthread+0x436/0x520 [ 79.905579][ T4313] ret_from_fork+0x1f/0x30 [ 79.910561][ T4313] [ 79.910561][ T4313] -> #2 ((work_completion)(&hdev->tx_work)){+.+.}-{0:0}: [ 79.919893][ T4313] __flush_work+0x116/0x210 [ 79.925401][ T4313] hci_dev_do_close+0x1e7/0x1030 [ 79.930886][ T4313] hci_unregister_dev+0x2d7/0x580 [ 79.936547][ T4313] vhci_release+0x73/0xc0 [ 79.941415][ T4313] __fput+0x234/0x930 [ 79.945935][ T4313] task_work_run+0x125/0x1a0 [ 79.951235][ T4313] do_exit+0x626/0x20c0 [ 79.956007][ T4313] do_group_exit+0x12e/0x300 [ 79.961126][ T4313] get_signal+0x6ca/0x12c0 [ 79.966168][ T4313] arch_do_signal_or_restart+0xe7/0x12c0 [ 79.972548][ T4313] exit_to_user_mode_loop+0x9e/0x130 [ 79.978560][ T4313] exit_to_user_mode_prepare+0xee/0x180 [ 79.984649][ T4313] syscall_exit_to_user_mode+0x16/0x40 [ 79.990743][ T4313] do_syscall_64+0x58/0xa0 [ 79.995802][ T4313] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 80.002496][ T4313] [ 80.002496][ T4313] -> #1 (&hdev->req_lock){+.+.}-{3:3}: [ 80.010439][ T4313] __mutex_lock_common+0x1e3/0x2400 [ 80.016280][ T4313] mutex_lock_nested+0x17/0x20 [ 80.021670][ T4313] bg_scan_update+0x44/0x3b0 [ 80.026803][ T4313] process_one_work+0x85f/0x1010 [ 80.032370][ T4313] worker_thread+0xaa6/0x1290 [ 80.037770][ T4313] kthread+0x436/0x520 [ 80.042372][ T4313] ret_from_fork+0x1f/0x30 [ 80.047415][ T4313] [ 80.047415][ T4313] -> #0 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}: [ 80.057549][ T4313] __lock_acquire+0x2c42/0x7d10 [ 80.062942][ T4313] lock_acquire+0x19e/0x400 [ 80.068092][ T4313] __flush_work+0x116/0x210 [ 80.073148][ T4313] __cancel_work_timer+0x3f4/0x560 [ 80.078798][ T4313] hci_request_cancel_all+0xcc/0x300 [ 80.084711][ T4313] hci_dev_do_close+0x4e/0x1030 [ 80.090095][ T4313] hci_rfkill_set_block+0x10a/0x190 [ 80.096018][ T4313] rfkill_set_block+0x1c9/0x3d0 [ 80.101566][ T4313] rfkill_fop_write+0x452/0x560 [ 80.107019][ T4313] vfs_write+0x30b/0xd60 [ 80.111803][ T4313] ksys_write+0x152/0x260 [ 80.116738][ T4313] do_syscall_64+0x4c/0xa0 [ 80.122262][ T4313] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 80.128684][ T4313] [ 80.128684][ T4313] other info that might help us debug this: [ 80.128684][ T4313] [ 80.139197][ T4313] Chain exists of: [ 80.139197][ T4313] (work_completion)(&hdev->bg_scan_update) --> &data->open_mutex --> rfkill_global_mutex [ 80.139197][ T4313] [ 80.155360][ T4313] Possible unsafe locking scenario: [ 80.155360][ T4313] [ 80.162820][ T4313] CPU0 CPU1 [ 80.168454][ T4313] ---- ---- [ 80.174165][ T4313] lock(rfkill_global_mutex); [ 80.178925][ T4313] lock(&data->open_mutex); [ 80.186146][ T4313] lock(rfkill_global_mutex); [ 80.193549][ T4313] lock((work_completion)(&hdev->bg_scan_update)); [ 80.200355][ T4313] [ 80.200355][ T4313] *** DEADLOCK *** [ 80.200355][ T4313] [ 80.208687][ T4313] 1 lock held by syz.0.17/4313: [ 80.213547][ T4313] #0: ffffffff8d6c5de8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x18b/0x560 [ 80.223858][ T4313] [ 80.223858][ T4313] stack backtrace: [ 80.230033][ T4313] CPU: 0 PID: 4313 Comm: syz.0.17 Not tainted syzkaller #0 [ 80.237250][ T4313] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 80.247315][ T4313] Call Trace: [ 80.250597][ T4313] [ 80.253562][ T4313] dump_stack_lvl+0x188/0x250 [ 80.258436][ T4313] ? load_image+0x400/0x400 [ 80.263147][ T4313] ? show_regs_print_info+0x20/0x20 [ 80.268436][ T4313] ? print_circular_bug+0x12b/0x1a0 [ 80.273637][ T4313] check_noncircular+0x296/0x330 [ 80.278659][ T4313] ? look_up_lock_class+0x71/0x110 [ 80.283775][ T4313] ? add_chain_block+0x940/0x940 [ 80.288709][ T4313] ? lockdep_lock+0xf1/0x1f0 [ 80.293310][ T4313] ? __lock_acquire+0x12e8/0x7d10 [ 80.298339][ T4313] ? mark_lock+0x94/0x320 [ 80.302671][ T4313] __lock_acquire+0x2c42/0x7d10 [ 80.307538][ T4313] ? verify_lock_unused+0x140/0x140 [ 80.312740][ T4313] ? verify_lock_unused+0x140/0x140 [ 80.318088][ T4313] ? mark_lock+0x94/0x320 [ 80.322512][ T4313] lock_acquire+0x19e/0x400 [ 80.327454][ T4313] ? __flush_work+0xfa/0x210 [ 80.332130][ T4313] ? __lock_acquire+0x7d10/0x7d10 [ 80.337159][ T4313] ? read_lock_is_recursive+0x10/0x10 [ 80.342720][ T4313] ? start_flush_work+0x776/0x820 [ 80.347746][ T4313] __flush_work+0x116/0x210 [ 80.352252][ T4313] ? __flush_work+0xfa/0x210 [ 80.356928][ T4313] ? flush_work+0x20/0x20 [ 80.361434][ T4313] ? try_to_grab_pending+0xfa/0x7f0 [ 80.366651][ T4313] ? mark_lock+0x94/0x320 [ 80.370977][ T4313] ? lockdep_hardirqs_on_prepare+0x409/0x770 [ 80.377049][ T4313] ? lock_chain_count+0x20/0x20 [ 80.382196][ T4313] ? mark_lock+0x94/0x320 [ 80.386523][ T4313] ? __cancel_work_timer+0x36a/0x560 [ 80.391808][ T4313] __cancel_work_timer+0x3f4/0x560 [ 80.397011][ T4313] ? cancel_work_sync+0x20/0x20 [ 80.401956][ T4313] ? __cancel_work+0x1f9/0x2e0 [ 80.406982][ T4313] ? lockdep_hardirqs_on+0x94/0x140 [ 80.412180][ T4313] ? __cancel_work+0x27b/0x2e0 [ 80.417116][ T4313] ? cancel_work+0x20/0x20 [ 80.421706][ T4313] ? lock_chain_count+0x20/0x20 [ 80.426754][ T4313] hci_request_cancel_all+0xcc/0x300 [ 80.432042][ T4313] hci_dev_do_close+0x4e/0x1030 [ 80.437004][ T4313] ? _raw_spin_unlock_irqrestore+0xc1/0x120 [ 80.443156][ T4313] ? _raw_spin_unlock+0x40/0x40 [ 80.448006][ T4313] hci_rfkill_set_block+0x10a/0x190 [ 80.453334][ T4313] ? rcu_lock_release+0x20/0x20 [ 80.458185][ T4313] rfkill_set_block+0x1c9/0x3d0 [ 80.463133][ T4313] rfkill_fop_write+0x452/0x560 [ 80.468002][ T4313] ? rfkill_fop_read+0x520/0x520 [ 80.473125][ T4313] ? common_file_perm+0x140/0x1c0 [ 80.478157][ T4313] ? fsnotify_perm+0x5d/0x560 [ 80.482923][ T4313] ? security_file_permission+0x75/0xa0 [ 80.488559][ T4313] ? rfkill_fop_read+0x520/0x520 [ 80.493685][ T4313] vfs_write+0x30b/0xd60 [ 80.497927][ T4313] ? file_end_write+0x250/0x250 [ 80.502874][ T4313] ? __context_tracking_exit+0x4c/0x80 [ 80.508597][ T4313] ? __lock_acquire+0x7d10/0x7d10 [ 80.513806][ T4313] ? __fdget_pos+0x1e2/0x370 [ 80.518662][ T4313] ksys_write+0x152/0x260 [ 80.523014][ T4313] ? __ia32_sys_read+0x80/0x80 [ 80.528137][ T4313] ? lockdep_hardirqs_on+0x94/0x140 [ 80.533341][ T4313] do_syscall_64+0x4c/0xa0 [ 80.537856][ T4313] ? clear_bhb_loop+0x30/0x80 [ 80.542646][ T4313] ? clear_bhb_loop+0x30/0x80 [ 80.547676][ T4313] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 80.553757][ T4313] RIP: 0033:0x7f7e58e26dd9 [ 80.558349][ T4313] 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 [ 80.578311][ T4313] RSP: 002b:00007fff01185fc8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 80.586726][ T4313] RAX: ffffffffffffffda RBX: 00007f7e5909ffa0 RCX: 00007f7e58e26dd9 [ 80.594791][ T4313] RDX: 0000000000000008 RSI: 00002000000000c0 RDI: 0000000000000003 [ 80.602953][ T4313] RBP: 00007f7e58ebcd69 R08: 0000000000000000 R09: 0000000000000000 [ 80.611188][ T4313] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 80.619168][ T4313] R13: 00007f7e5909ffac R14: 00007f7e5909ffa0 R15: 00007f7e5909ffa0 [ 80.627164][ T4313] [ 80.644713][ T4304] Bluetooth: hci0: command 0x040f tx timeout