Warning: Permanently added '10.128.0.178' (ED25519) to the list of known hosts. 2025/11/13 07:13:29 parsed 1 programs syzkaller login: [ 64.732885][ T4189] cgroup: Unknown subsys name 'net' [ 64.868677][ T4189] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size = 127995904 bytes [ 66.368373][ T4189] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k FS [ 68.770517][ T4222] chnl_net:caif_netlink_parms(): no params data found [ 68.834009][ T4222] bridge0: port 1(bridge_slave_0) entered blocking state [ 68.842074][ T4222] bridge0: port 1(bridge_slave_0) entered disabled state [ 68.850813][ T4222] device bridge_slave_0 entered promiscuous mode [ 68.860912][ T4222] bridge0: port 2(bridge_slave_1) entered blocking state [ 68.868267][ T4222] bridge0: port 2(bridge_slave_1) entered disabled state [ 68.876343][ T4222] device bridge_slave_1 entered promiscuous mode [ 68.906267][ T4222] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 68.919305][ T4222] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 68.950560][ T4222] team0: Port device team_slave_0 added [ 68.959358][ T4222] team0: Port device team_slave_1 added [ 68.991772][ T4222] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 68.998796][ T4222] 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. [ 69.026304][ T4222] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 69.040127][ T4222] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 69.047101][ T4222] 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. [ 69.074654][ T4222] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 69.125689][ T4222] device hsr_slave_0 entered promiscuous mode [ 69.132771][ T4222] device hsr_slave_1 entered promiscuous mode [ 69.275315][ T4222] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 69.289677][ T4222] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 69.301351][ T4222] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 69.311050][ T4222] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 69.346729][ T4222] bridge0: port 2(bridge_slave_1) entered blocking state [ 69.354010][ T4222] bridge0: port 2(bridge_slave_1) entered forwarding state [ 69.361888][ T4222] bridge0: port 1(bridge_slave_0) entered blocking state [ 69.369005][ T4222] bridge0: port 1(bridge_slave_0) entered forwarding state [ 69.426696][ T4222] 8021q: adding VLAN 0 to HW filter on device bond0 [ 69.443067][ T1451] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 69.454446][ T1451] bridge0: port 1(bridge_slave_0) entered disabled state [ 69.463161][ T1451] bridge0: port 2(bridge_slave_1) entered disabled state [ 69.471515][ T1451] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 69.486475][ T4222] 8021q: adding VLAN 0 to HW filter on device team0 [ 69.498684][ T1451] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 69.507156][ T1451] bridge0: port 1(bridge_slave_0) entered blocking state [ 69.514265][ T1451] bridge0: port 1(bridge_slave_0) entered forwarding state [ 69.540557][ T1451] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 69.549749][ T1451] bridge0: port 2(bridge_slave_1) entered blocking state [ 69.556835][ T1451] bridge0: port 2(bridge_slave_1) entered forwarding state [ 69.566707][ T1451] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 69.576665][ T1451] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 69.589132][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 69.603332][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 69.616621][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 69.628398][ T4222] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 69.761038][ T4222] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 69.769314][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 69.776812][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 69.798820][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 69.808900][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 69.826978][ T1451] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 69.835713][ T1451] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 69.849938][ T1451] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 69.858642][ T1451] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 69.869144][ T4222] device veth0_vlan entered promiscuous mode [ 69.881150][ T4222] device veth1_vlan entered promiscuous mode [ 69.901296][ T1451] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 69.910948][ T1451] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 69.919367][ T1451] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 69.928635][ T1451] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 69.939318][ T4222] device veth0_macvtap entered promiscuous mode [ 69.952861][ T4222] device veth1_macvtap entered promiscuous mode [ 69.994512][ T4222] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 70.006417][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 70.019112][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 70.027154][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 70.036217][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 70.050992][ T4222] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 70.060639][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 70.074207][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 70.091506][ T4222] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 70.100676][ T4222] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 70.109738][ T4222] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 70.119553][ T4222] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 70.281159][ T1451] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 70.289990][ T1451] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 70.304298][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 70.315785][ T1451] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 70.324170][ T1451] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 70.345573][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 71.205942][ T1421] ieee802154 phy0 wpan0: encryption failed: -22 [ 71.212578][ T1421] ieee802154 phy1 wpan1: encryption failed: -22 2025/11/13 07:13:39 executed programs: 0 [ 72.084069][ T4290] chnl_net:caif_netlink_parms(): no params data found [ 72.142910][ T4290] bridge0: port 1(bridge_slave_0) entered blocking state [ 72.150112][ T4290] bridge0: port 1(bridge_slave_0) entered disabled state [ 72.158265][ T4290] device bridge_slave_0 entered promiscuous mode [ 72.166810][ T4290] bridge0: port 2(bridge_slave_1) entered blocking state [ 72.175463][ T4290] bridge0: port 2(bridge_slave_1) entered disabled state [ 72.183670][ T4290] device bridge_slave_1 entered promiscuous mode [ 72.206186][ T4290] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 72.225332][ T4290] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 72.263460][ T4290] team0: Port device team_slave_0 added [ 72.272849][ T4290] team0: Port device team_slave_1 added [ 72.295321][ T4290] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 72.302454][ T4290] 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. [ 72.329354][ T4290] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 72.342128][ T4290] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 72.349238][ T4290] 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. [ 72.375360][ T4290] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 72.414378][ T4290] device hsr_slave_0 entered promiscuous mode [ 72.422178][ T4290] device hsr_slave_1 entered promiscuous mode [ 72.431245][ T4290] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 72.439292][ T4290] Cannot create hsr debugfs directory [ 72.516035][ T4290] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 73.998907][ T7] Bluetooth: hci0: command 0x0409 tx timeout [ 75.607086][ T4290] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 75.673666][ T4290] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 75.739711][ T4290] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 75.949497][ T4290] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 75.959518][ T4290] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 75.969588][ T4290] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 75.979527][ T4290] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 76.051783][ T4290] 8021q: adding VLAN 0 to HW filter on device bond0 [ 76.079101][ T4307] Bluetooth: hci0: command 0x041b tx timeout [ 76.087199][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 76.095357][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 76.106863][ T4290] 8021q: adding VLAN 0 to HW filter on device team0 [ 76.117313][ T1451] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 76.126614][ T1451] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 76.135745][ T1451] bridge0: port 1(bridge_slave_0) entered blocking state [ 76.142958][ T1451] bridge0: port 1(bridge_slave_0) entered forwarding state [ 76.151729][ T1451] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 76.171536][ T1451] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 76.180888][ T1451] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 76.190899][ T1451] bridge0: port 2(bridge_slave_1) entered blocking state [ 76.198026][ T1451] bridge0: port 2(bridge_slave_1) entered forwarding state [ 76.206731][ T1451] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 76.217346][ T1451] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 76.237420][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 76.246655][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 76.257115][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 76.269435][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 76.278379][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 76.289063][ T1451] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 76.297481][ T1451] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 76.327307][ T144] device hsr_slave_0 left promiscuous mode [ 76.334924][ T144] device hsr_slave_1 left promiscuous mode [ 76.342148][ T144] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 76.349741][ T144] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 76.357832][ T144] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 76.365251][ T144] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 76.373791][ T144] device bridge_slave_1 left promiscuous mode [ 76.381225][ T144] bridge0: port 2(bridge_slave_1) entered disabled state [ 76.394342][ T144] device bridge_slave_0 left promiscuous mode [ 76.401529][ T144] bridge0: port 1(bridge_slave_0) entered disabled state [ 76.419318][ T144] device veth1_macvtap left promiscuous mode [ 76.425572][ T144] device veth0_macvtap left promiscuous mode [ 76.431702][ T144] device veth1_vlan left promiscuous mode [ 76.438558][ T144] device veth0_vlan left promiscuous mode [ 76.603601][ T144] team0 (unregistering): Port device team_slave_1 removed [ 76.615262][ T144] team0 (unregistering): Port device team_slave_0 removed [ 76.629480][ T144] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 76.645140][ T144] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 76.701367][ T144] bond0 (unregistering): Released all slaves [ 76.752418][ T1451] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 76.760840][ T1451] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 76.771019][ T4290] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 76.885573][ T1451] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 76.894058][ T1451] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 76.905642][ T4290] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 76.923762][ T1451] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 76.932600][ T1451] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 76.962109][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 76.971999][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 76.980847][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 76.989205][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 76.998379][ T4290] device veth0_vlan entered promiscuous mode [ 77.010247][ T4290] device veth1_vlan entered promiscuous mode [ 77.029925][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 77.038140][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 77.046157][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 77.055077][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 77.066186][ T4290] device veth0_macvtap entered promiscuous mode [ 77.077370][ T4290] device veth1_macvtap entered promiscuous mode [ 77.089134][ T1451] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 77.099387][ T1451] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 77.113317][ T4290] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 77.132416][ T1451] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 77.143729][ T1451] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 77.154480][ T4290] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 77.163394][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 77.174519][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 77.186371][ T4290] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 77.195592][ T4290] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 77.204608][ T4290] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 77.213722][ T4290] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 77.285052][ T9] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 77.308204][ T9] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 77.316581][ T1451] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 77.317310][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 77.332090][ T1451] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 77.345220][ T4322] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 77.429637][ T4323] input: syz0 as /devices/virtual/input/input5 [ 77.507284][ T7] [ 77.509697][ T7] ====================================================== [ 77.516723][ T7] WARNING: possible circular locking dependency detected [ 77.523759][ T7] syzkaller #0 Not tainted [ 77.528275][ T7] ------------------------------------------------------ [ 77.535295][ T7] kworker/0:0/7 is trying to acquire lock: [ 77.541139][ T7] ffff8880254d8c28 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}, at: __flush_work+0xc1/0x1b0 [ 77.552253][ T7] [ 77.552253][ T7] but task is already holding lock: [ 77.559626][ T7] ffffffff8d4c0f28 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_epo+0x43/0x170 [ 77.568699][ T7] [ 77.568699][ T7] which lock already depends on the new lock. [ 77.568699][ T7] [ 77.579109][ T7] [ 77.579109][ T7] the existing dependency chain (in reverse order) is: [ 77.588132][ T7] [ 77.588132][ T7] -> #4 (rfkill_global_mutex){+.+.}-{3:3}: [ 77.596161][ T7] __mutex_lock_common+0x1eb/0x2390 [ 77.601941][ T7] mutex_lock_nested+0x17/0x20 [ 77.607262][ T7] rfkill_register+0x33/0x8a0 [ 77.612480][ T7] hci_register_dev+0x452/0x970 [ 77.617908][ T7] vhci_create_device+0x32c/0x5c0 [ 77.623470][ T7] vhci_write+0x391/0x450 [ 77.628334][ T7] vfs_write+0x712/0xd00 [ 77.633131][ T7] ksys_write+0x14d/0x250 [ 77.637993][ T7] do_syscall_64+0x4c/0xa0 [ 77.642944][ T7] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 77.649454][ T7] [ 77.649454][ T7] -> #3 (&data->open_mutex){+.+.}-{3:3}: [ 77.657293][ T7] __mutex_lock_common+0x1eb/0x2390 [ 77.663030][ T7] mutex_lock_nested+0x17/0x20 [ 77.668325][ T7] vhci_send_frame+0x88/0x100 [ 77.673524][ T7] hci_send_frame+0x1a9/0x2e0 [ 77.678721][ T7] hci_tx_work+0x9f9/0x1710 [ 77.683756][ T7] process_one_work+0x863/0x1000 [ 77.689212][ T7] worker_thread+0xaa8/0x12a0 [ 77.694505][ T7] kthread+0x436/0x520 [ 77.699234][ T7] ret_from_fork+0x1f/0x30 [ 77.704189][ T7] [ 77.704189][ T7] -> #2 ((work_completion)(&hdev->tx_work)){+.+.}-{0:0}: [ 77.713613][ T7] __flush_work+0xdd/0x1b0 [ 77.718561][ T7] hci_dev_do_close+0x1e7/0x1030 [ 77.724020][ T7] hci_unregister_dev+0x2d7/0x580 [ 77.729566][ T7] vhci_release+0x73/0xc0 [ 77.734434][ T7] __fput+0x234/0x930 [ 77.739060][ T7] task_work_run+0x125/0x1a0 [ 77.744245][ T7] do_exit+0x61e/0x20a0 [ 77.749090][ T7] do_group_exit+0x12e/0x300 [ 77.754214][ T7] get_signal+0x6ca/0x12c0 [ 77.759153][ T7] arch_do_signal_or_restart+0xc1/0x1300 [ 77.765311][ T7] exit_to_user_mode_loop+0x9e/0x130 [ 77.771129][ T7] exit_to_user_mode_prepare+0xee/0x180 [ 77.777198][ T7] syscall_exit_to_user_mode+0x16/0x40 [ 77.783179][ T7] do_syscall_64+0x58/0xa0 [ 77.788122][ T7] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 77.794550][ T7] [ 77.794550][ T7] -> #1 (&hdev->req_lock){+.+.}-{3:3}: [ 77.802205][ T7] __mutex_lock_common+0x1eb/0x2390 [ 77.807937][ T7] mutex_lock_nested+0x17/0x20 [ 77.813225][ T7] bg_scan_update+0x44/0x3b0 [ 77.818350][ T7] process_one_work+0x863/0x1000 [ 77.823823][ T7] worker_thread+0xaa8/0x12a0 [ 77.829030][ T7] kthread+0x436/0x520 [ 77.833620][ T7] ret_from_fork+0x1f/0x30 [ 77.838668][ T7] [ 77.838668][ T7] -> #0 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}: [ 77.848495][ T7] __lock_acquire+0x2c33/0x7c60 [ 77.853874][ T7] lock_acquire+0x197/0x3f0 [ 77.858901][ T7] __flush_work+0xdd/0x1b0 [ 77.863852][ T7] __cancel_work_timer+0x3ac/0x520 [ 77.869503][ T7] hci_request_cancel_all+0xcc/0x300 [ 77.875314][ T7] hci_dev_do_close+0x4e/0x1030 [ 77.880719][ T7] hci_rfkill_set_block+0x10a/0x190 [ 77.886451][ T7] rfkill_set_block+0x1c6/0x420 [ 77.891855][ T7] rfkill_epo+0x75/0x170 [ 77.896625][ T7] rfkill_op_handler+0x76/0x220 [ 77.901998][ T7] process_one_work+0x863/0x1000 [ 77.907460][ T7] worker_thread+0xaa8/0x12a0 [ 77.912752][ T7] kthread+0x436/0x520 [ 77.917353][ T7] ret_from_fork+0x1f/0x30 [ 77.922305][ T7] [ 77.922305][ T7] other info that might help us debug this: [ 77.922305][ T7] [ 77.932630][ T7] Chain exists of: [ 77.932630][ T7] (work_completion)(&hdev->bg_scan_update) --> &data->open_mutex --> rfkill_global_mutex [ 77.932630][ T7] [ 77.948358][ T7] Possible unsafe locking scenario: [ 77.948358][ T7] [ 77.955798][ T7] CPU0 CPU1 [ 77.961162][ T7] ---- ---- [ 77.966524][ T7] lock(rfkill_global_mutex); [ 77.971284][ T7] lock(&data->open_mutex); [ 77.978395][ T7] lock(rfkill_global_mutex); [ 77.985677][ T7] lock((work_completion)(&hdev->bg_scan_update)); [ 77.992387][ T7] [ 77.992387][ T7] *** DEADLOCK *** [ 77.992387][ T7] [ 78.000531][ T7] 3 locks held by kworker/0:0/7: [ 78.005562][ T7] #0: ffff888016870938 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x760/0x1000 [ 78.015950][ T7] #1: ffffc90000cc7d00 ((rfkill_op_work).work){+.+.}-{0:0}, at: process_one_work+0x7a3/0x1000 [ 78.026301][ T7] #2: ffffffff8d4c0f28 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_epo+0x43/0x170 [ 78.035808][ T7] [ 78.035808][ T7] stack backtrace: [ 78.041697][ T7] CPU: 0 PID: 7 Comm: kworker/0:0 Not tainted syzkaller #0 [ 78.048889][ T7] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025 [ 78.058952][ T7] Workqueue: events rfkill_op_handler [ 78.064337][ T7] Call Trace: [ 78.067634][ T7] [ 78.070586][ T7] dump_stack_lvl+0x168/0x230 [ 78.075373][ T7] ? load_image+0x3b0/0x3b0 [ 78.079887][ T7] ? show_regs_print_info+0x20/0x20 [ 78.085102][ T7] ? print_circular_bug+0x12b/0x1a0 [ 78.090308][ T7] check_noncircular+0x274/0x310 [ 78.095255][ T7] ? add_chain_block+0x940/0x940 [ 78.100196][ T7] ? lockdep_lock+0xdc/0x1e0 [ 78.104791][ T7] ? __lock_acquire+0x12d9/0x7c60 [ 78.109816][ T7] ? lockdep_lock+0x1e0/0x1e0 [ 78.114499][ T7] ? mark_lock+0x94/0x320 [ 78.118831][ T7] __lock_acquire+0x2c33/0x7c60 [ 78.123695][ T7] ? verify_lock_unused+0x140/0x140 [ 78.128899][ T7] ? verify_lock_unused+0x140/0x140 [ 78.134104][ T7] ? ret_from_fork+0x1e/0x30 [ 78.138706][ T7] lock_acquire+0x197/0x3f0 [ 78.143212][ T7] ? __flush_work+0xc1/0x1b0 [ 78.147804][ T7] ? __lock_acquire+0x7c60/0x7c60 [ 78.152830][ T7] ? read_lock_is_recursive+0x10/0x10 [ 78.158206][ T7] ? start_flush_work+0x776/0x820 [ 78.163235][ T7] ? _raw_spin_unlock_irqrestore+0xaa/0x100 [ 78.169129][ T7] __flush_work+0xdd/0x1b0 [ 78.173543][ T7] ? __flush_work+0xc1/0x1b0 [ 78.178143][ T7] ? flush_work+0x20/0x20 [ 78.182476][ T7] ? try_to_grab_pending+0xf3/0x7e0 [ 78.187683][ T7] ? lockdep_hardirqs_off+0x70/0x100 [ 78.192988][ T7] ? mark_lock+0x94/0x320 [ 78.197339][ T7] ? lockdep_hardirqs_on_prepare+0x3fc/0x760 [ 78.203346][ T7] ? lock_chain_count+0x20/0x20 [ 78.208214][ T7] ? lockdep_hardirqs_off+0x70/0x100 [ 78.213511][ T7] ? mark_lock+0x94/0x320 [ 78.217857][ T7] ? __cancel_work_timer+0x331/0x520 [ 78.223154][ T7] __cancel_work_timer+0x3ac/0x520 [ 78.228385][ T7] ? cancel_work_sync+0x20/0x20 [ 78.233251][ T7] ? __cancel_work+0x1f4/0x2d0 [ 78.238026][ T7] ? lockdep_hardirqs_on+0x94/0x140 [ 78.243236][ T7] ? __cancel_work+0x26f/0x2d0 [ 78.248012][ T7] ? cancel_work+0x20/0x20 [ 78.252449][ T7] hci_request_cancel_all+0xcc/0x300 [ 78.257739][ T7] hci_dev_do_close+0x4e/0x1030 [ 78.262593][ T7] ? _raw_spin_unlock_irqrestore+0xaa/0x100 [ 78.268489][ T7] ? _raw_spin_unlock+0x40/0x40 [ 78.273336][ T7] ? kobject_uevent_env+0x371/0x890 [ 78.278969][ T7] hci_rfkill_set_block+0x10a/0x190 [ 78.284166][ T7] ? rcu_lock_release+0x20/0x20 [ 78.289019][ T7] rfkill_set_block+0x1c6/0x420 [ 78.293887][ T7] rfkill_epo+0x75/0x170 [ 78.298129][ T7] rfkill_op_handler+0x76/0x220 [ 78.302982][ T7] process_one_work+0x863/0x1000 [ 78.307930][ T7] ? worker_detach_from_pool+0x240/0x240 [ 78.313570][ T7] ? lockdep_hardirqs_off+0x70/0x100 [ 78.318876][ T7] ? _raw_spin_lock_irq+0xab/0xe0 [ 78.323919][ T7] ? _raw_spin_lock_irqsave+0xf0/0xf0 [ 78.329297][ T7] ? wq_worker_running+0x97/0x170 [ 78.334328][ T7] worker_thread+0xaa8/0x12a0 [ 78.339017][ T7] kthread+0x436/0x520 [ 78.343089][ T7] ? rcu_lock_release+0x20/0x20 [ 78.347951][ T7] ? kthread_blkcg+0xd0/0xd0 [ 78.352538][ T7] ret_from_fork+0x1f/0x30 [ 78.356965][ T7] [ 78.368526][ T4307] Bluetooth: hci0: command 0x040f tx timeout