no interfaces have a carrier [ 37.874643][ T3854] 8021q: adding VLAN 0 to HW filter on device bond0 [ 37.885585][ T3854] eql: remember to turn off Van-Jacobson compression on your slave devices Starting crond: OK Starting sshd: OK syzkaller Warning: Permanently added '10.128.0.102' (ED25519) to the list of known hosts. 2025/08/16 03:21:42 ignoring optional flag "sandboxArg"="0" 2025/08/16 03:21:43 parsed 1 programs syzkaller login: [ 64.492137][ T4189] cgroup: Unknown subsys name 'net' [ 64.624775][ T4189] cgroup: Unknown subsys name 'rlimit' [ 66.094429][ T4189] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k FS [ 67.842528][ T1185] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 67.855624][ T1185] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 67.866975][ T1491] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 67.880036][ T1185] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 67.887963][ T1185] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 67.896527][ T1185] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 69.596791][ T9] ODEBUG: Out of memory. ODEBUG disabled [ 70.037552][ T4278] chnl_net:caif_netlink_parms(): no params data found [ 70.080852][ T4278] bridge0: port 1(bridge_slave_0) entered blocking state [ 70.088401][ T4278] bridge0: port 1(bridge_slave_0) entered disabled state [ 70.096304][ T4278] device bridge_slave_0 entered promiscuous mode [ 70.104621][ T4278] bridge0: port 2(bridge_slave_1) entered blocking state [ 70.111788][ T4278] bridge0: port 2(bridge_slave_1) entered disabled state [ 70.119626][ T4278] device bridge_slave_1 entered promiscuous mode [ 70.140393][ T4278] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 70.151165][ T4278] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 70.174360][ T4278] team0: Port device team_slave_0 added [ 70.181549][ T4278] team0: Port device team_slave_1 added [ 70.199416][ T4278] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 70.206373][ T4278] 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. [ 70.232298][ T4278] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 70.244384][ T4278] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 70.251359][ T4278] 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. [ 70.277251][ T4278] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 70.306468][ T4278] device hsr_slave_0 entered promiscuous mode [ 70.313502][ T4278] device hsr_slave_1 entered promiscuous mode [ 70.417154][ T4278] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 70.426816][ T4278] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 70.436022][ T4278] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 70.445047][ T4278] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 70.485671][ T4278] bridge0: port 2(bridge_slave_1) entered blocking state [ 70.492859][ T4278] bridge0: port 2(bridge_slave_1) entered forwarding state [ 70.500407][ T4278] bridge0: port 1(bridge_slave_0) entered blocking state [ 70.507564][ T4278] bridge0: port 1(bridge_slave_0) entered forwarding state [ 70.564746][ T4278] 8021q: adding VLAN 0 to HW filter on device bond0 [ 70.597573][ T1185] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 70.606974][ T1185] bridge0: port 1(bridge_slave_0) entered disabled state [ 70.615593][ T1185] bridge0: port 2(bridge_slave_1) entered disabled state [ 70.624319][ T1185] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 70.635889][ T4278] 8021q: adding VLAN 0 to HW filter on device team0 [ 70.655646][ T1185] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 70.664660][ T1185] bridge0: port 1(bridge_slave_0) entered blocking state [ 70.671748][ T1185] bridge0: port 1(bridge_slave_0) entered forwarding state [ 70.679627][ T1185] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 70.688003][ T1185] bridge0: port 2(bridge_slave_1) entered blocking state [ 70.695108][ T1185] bridge0: port 2(bridge_slave_1) entered forwarding state [ 70.726774][ T1185] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 70.735950][ T1185] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 70.747057][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 70.760615][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 70.772376][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 70.803648][ T4278] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 70.897430][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 70.905475][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 70.917199][ T4278] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 70.935713][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 70.970948][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 70.979361][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 70.988412][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 70.996587][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 71.006303][ T4278] device veth0_vlan entered promiscuous mode [ 71.036112][ T4278] device veth1_vlan entered promiscuous mode [ 71.055987][ T1185] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 71.064214][ T1185] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 71.072936][ T1185] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 71.081900][ T1185] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 71.093027][ T4278] device veth0_macvtap entered promiscuous mode [ 71.118231][ T4278] device veth1_macvtap entered promiscuous mode [ 71.132874][ T4278] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 71.141861][ T1185] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 71.152193][ T1185] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 71.160463][ T1185] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 71.169869][ T1185] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 71.180036][ T4278] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 71.191766][ T1422] ieee802154 phy0 wpan0: encryption failed: -22 [ 71.198249][ T1422] ieee802154 phy1 wpan1: encryption failed: -22 [ 71.203303][ T4278] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 71.214705][ T4278] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 71.224495][ T4278] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 71.234564][ T4278] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 71.246228][ T1185] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 71.255033][ T1185] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready 2025/08/16 03:21:53 executed programs: 0 [ 71.831605][ T4303] chnl_net:caif_netlink_parms(): no params data found [ 71.890817][ T4303] bridge0: port 1(bridge_slave_0) entered blocking state [ 71.897970][ T4303] bridge0: port 1(bridge_slave_0) entered disabled state [ 71.907063][ T4303] device bridge_slave_0 entered promiscuous mode [ 71.917817][ T4303] bridge0: port 2(bridge_slave_1) entered blocking state [ 71.926144][ T4303] bridge0: port 2(bridge_slave_1) entered disabled state [ 71.936002][ T4303] device bridge_slave_1 entered promiscuous mode [ 71.964466][ T4303] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 71.977056][ T4303] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 72.010173][ T4303] team0: Port device team_slave_0 added [ 72.017858][ T4303] team0: Port device team_slave_1 added [ 72.044519][ T4303] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 72.051628][ T4303] 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. [ 72.080191][ T4303] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 72.094317][ T4303] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 72.103635][ T4303] 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. [ 72.131611][ T4303] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 72.176203][ T4303] device hsr_slave_0 entered promiscuous mode [ 72.185239][ T4303] device hsr_slave_1 entered promiscuous mode [ 72.192968][ T4303] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 72.203498][ T4303] Cannot create hsr debugfs directory [ 72.294135][ T4303] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 73.749344][ T4291] Bluetooth: hci0: command 0x0409 tx timeout [ 74.803725][ T4303] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 75.828800][ T21] Bluetooth: hci0: command 0x041b tx timeout [ 76.574479][ T4303] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 76.634063][ T4303] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 76.803995][ T4303] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 76.813805][ T4303] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 76.829419][ T4303] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 76.837871][ T4303] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 76.865600][ T9] device hsr_slave_0 left promiscuous mode [ 76.873178][ T9] device hsr_slave_1 left promiscuous mode [ 76.883468][ T9] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 76.891240][ T9] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 76.899707][ T9] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 76.907120][ T9] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 76.914827][ T9] device bridge_slave_1 left promiscuous mode [ 76.921598][ T9] bridge0: port 2(bridge_slave_1) entered disabled state [ 76.933163][ T9] device bridge_slave_0 left promiscuous mode [ 76.939440][ T9] bridge0: port 1(bridge_slave_0) entered disabled state [ 76.957423][ T9] device veth1_macvtap left promiscuous mode [ 76.964098][ T9] device veth0_macvtap left promiscuous mode [ 76.970363][ T9] device veth1_vlan left promiscuous mode [ 76.976347][ T9] device veth0_vlan left promiscuous mode [ 77.104052][ T9] team0 (unregistering): Port device team_slave_1 removed [ 77.118721][ T9] team0 (unregistering): Port device team_slave_0 removed [ 77.132183][ T9] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 77.144833][ T9] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 77.193898][ T9] bond0 (unregistering): Released all slaves [ 77.265696][ T4303] 8021q: adding VLAN 0 to HW filter on device bond0 [ 77.285273][ T4303] 8021q: adding VLAN 0 to HW filter on device team0 [ 77.292685][ T1491] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 77.304634][ T1491] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 77.319686][ T1491] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 77.328371][ T1491] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 77.337155][ T1491] bridge0: port 1(bridge_slave_0) entered blocking state [ 77.344256][ T1491] bridge0: port 1(bridge_slave_0) entered forwarding state [ 77.352940][ T1491] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 77.361596][ T1491] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 77.370043][ T1491] bridge0: port 2(bridge_slave_1) entered blocking state [ 77.377083][ T1491] bridge0: port 2(bridge_slave_1) entered forwarding state [ 77.385156][ T1491] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 77.394666][ T1491] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 77.412152][ T1491] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 77.422273][ T1491] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 77.432581][ T1491] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 77.443298][ T1491] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 77.452517][ T1491] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 77.461232][ T1491] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 77.471652][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 77.480304][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 77.491047][ T1491] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 77.501359][ T1491] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 77.512538][ T4303] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 77.597684][ T1491] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 77.605460][ T1491] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 77.621088][ T4303] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 77.642007][ T1491] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 77.652999][ T1491] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 77.672617][ T1491] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 77.682630][ T1491] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 77.694861][ T4303] device veth0_vlan entered promiscuous mode [ 77.702527][ T1491] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 77.711468][ T1491] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 77.724955][ T4303] device veth1_vlan entered promiscuous mode [ 77.747479][ T1491] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 77.756606][ T1491] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 77.765315][ T1491] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 77.775020][ T1491] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 77.787479][ T4303] device veth0_macvtap entered promiscuous mode [ 77.797869][ T4303] device veth1_macvtap entered promiscuous mode [ 77.817409][ T4303] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 77.826309][ T1491] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 77.835655][ T1491] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 77.844432][ T1491] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 77.853205][ T1491] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 77.865219][ T4303] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 77.873107][ T1491] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 77.882589][ T1491] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 77.893811][ T4303] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 77.903168][ T4303] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 77.908692][ T4271] Bluetooth: hci0: command 0x040f tx timeout [ 77.912518][ T4303] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 77.927928][ T4303] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 77.987801][ T144] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 78.006794][ T144] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 78.027376][ T1185] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 78.029254][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 78.043058][ T1185] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 78.053944][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 78.160428][ T4321] [ 78.162797][ T4321] ====================================================== [ 78.169819][ T4321] WARNING: possible circular locking dependency detected [ 78.176856][ T4321] 5.15.189-syzkaller #0 Not tainted [ 78.182061][ T4321] ------------------------------------------------------ [ 78.189082][ T4321] syz.0.17/4321 is trying to acquire lock: [ 78.194989][ T4321] ffff888022b2cc28 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}, at: __flush_work+0xc1/0x1b0 [ 78.206075][ T4321] [ 78.206075][ T4321] but task is already holding lock: [ 78.213446][ T4321] ffffffff8d4be228 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x19e/0x560 [ 78.223121][ T4321] [ 78.223121][ T4321] which lock already depends on the new lock. [ 78.223121][ T4321] [ 78.233529][ T4321] [ 78.233529][ T4321] the existing dependency chain (in reverse order) is: [ 78.242546][ T4321] [ 78.242546][ T4321] -> #4 (rfkill_global_mutex){+.+.}-{3:3}: [ 78.250552][ T4321] __mutex_lock_common+0x1eb/0x2390 [ 78.256280][ T4321] mutex_lock_nested+0x17/0x20 [ 78.261583][ T4321] rfkill_register+0x33/0x8a0 [ 78.266795][ T4321] hci_register_dev+0x452/0x970 [ 78.272179][ T4321] vhci_create_device+0x32c/0x5c0 [ 78.277737][ T4321] vhci_write+0x391/0x450 [ 78.282597][ T4321] vfs_write+0x712/0xd00 [ 78.287363][ T4321] ksys_write+0x14d/0x250 [ 78.292218][ T4321] do_syscall_64+0x4c/0xa0 [ 78.297170][ T4321] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 78.303599][ T4321] [ 78.303599][ T4321] -> #3 (&data->open_mutex){+.+.}-{3:3}: [ 78.311434][ T4321] __mutex_lock_common+0x1eb/0x2390 [ 78.317195][ T4321] mutex_lock_nested+0x17/0x20 [ 78.322582][ T4321] vhci_send_frame+0x88/0x100 [ 78.327801][ T4321] hci_send_frame+0x1a9/0x2e0 [ 78.333012][ T4321] hci_tx_work+0x9f9/0x1710 [ 78.338050][ T4321] process_one_work+0x863/0x1000 [ 78.343526][ T4321] worker_thread+0xaa8/0x12a0 [ 78.348752][ T4321] kthread+0x436/0x520 [ 78.353348][ T4321] ret_from_fork+0x1f/0x30 [ 78.358295][ T4321] [ 78.358295][ T4321] -> #2 ((work_completion)(&hdev->tx_work)){+.+.}-{0:0}: [ 78.367528][ T4321] __flush_work+0xdd/0x1b0 [ 78.372478][ T4321] hci_dev_do_close+0x1e7/0x1030 [ 78.377973][ T4321] hci_unregister_dev+0x2d7/0x580 [ 78.383537][ T4321] vhci_release+0x73/0xc0 [ 78.388399][ T4321] __fput+0x234/0x930 [ 78.392926][ T4321] task_work_run+0x125/0x1a0 [ 78.398052][ T4321] do_exit+0x61e/0x20a0 [ 78.402752][ T4321] do_group_exit+0x12e/0x300 [ 78.407951][ T4321] get_signal+0x6ca/0x12c0 [ 78.412903][ T4321] arch_do_signal_or_restart+0xc1/0x1300 [ 78.419075][ T4321] exit_to_user_mode_loop+0x9e/0x130 [ 78.424893][ T4321] exit_to_user_mode_prepare+0xb1/0x140 [ 78.430994][ T4321] syscall_exit_to_user_mode+0x16/0x40 [ 78.436985][ T4321] do_syscall_64+0x58/0xa0 [ 78.441937][ T4321] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 78.448371][ T4321] [ 78.448371][ T4321] -> #1 (&hdev->req_lock){+.+.}-{3:3}: [ 78.456074][ T4321] __mutex_lock_common+0x1eb/0x2390 [ 78.461815][ T4321] mutex_lock_nested+0x17/0x20 [ 78.467112][ T4321] bg_scan_update+0x44/0x3b0 [ 78.472228][ T4321] process_one_work+0x863/0x1000 [ 78.477710][ T4321] worker_thread+0xaa8/0x12a0 [ 78.482928][ T4321] kthread+0x436/0x520 [ 78.487532][ T4321] ret_from_fork+0x1f/0x30 [ 78.492482][ T4321] [ 78.492482][ T4321] -> #0 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}: [ 78.502324][ T4321] __lock_acquire+0x2c33/0x7c60 [ 78.507706][ T4321] lock_acquire+0x197/0x3f0 [ 78.512735][ T4321] __flush_work+0xdd/0x1b0 [ 78.517678][ T4321] __cancel_work_timer+0x3ac/0x520 [ 78.523320][ T4321] hci_request_cancel_all+0xcc/0x300 [ 78.529123][ T4321] hci_dev_do_close+0x4e/0x1030 [ 78.534493][ T4321] hci_rfkill_set_block+0x10a/0x190 [ 78.540210][ T4321] rfkill_set_block+0x1c6/0x420 [ 78.545580][ T4321] rfkill_fop_write+0x458/0x560 [ 78.550947][ T4321] do_iter_write+0x3e4/0x7b0 [ 78.556055][ T4321] do_writev+0x254/0x410 [ 78.560810][ T4321] do_syscall_64+0x4c/0xa0 [ 78.565744][ T4321] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 78.572156][ T4321] [ 78.572156][ T4321] other info that might help us debug this: [ 78.572156][ T4321] [ 78.582376][ T4321] Chain exists of: [ 78.582376][ T4321] (work_completion)(&hdev->bg_scan_update) --> &data->open_mutex --> rfkill_global_mutex [ 78.582376][ T4321] [ 78.598110][ T4321] Possible unsafe locking scenario: [ 78.598110][ T4321] [ 78.605559][ T4321] CPU0 CPU1 [ 78.610914][ T4321] ---- ---- [ 78.616265][ T4321] lock(rfkill_global_mutex); [ 78.621022][ T4321] lock(&data->open_mutex); [ 78.628130][ T4321] lock(rfkill_global_mutex); [ 78.635410][ T4321] lock((work_completion)(&hdev->bg_scan_update)); [ 78.642080][ T4321] [ 78.642080][ T4321] *** DEADLOCK *** [ 78.642080][ T4321] [ 78.650234][ T4321] 1 lock held by syz.0.17/4321: [ 78.655080][ T4321] #0: ffffffff8d4be228 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x19e/0x560 [ 78.665188][ T4321] [ 78.665188][ T4321] stack backtrace: [ 78.671073][ T4321] CPU: 1 PID: 4321 Comm: syz.0.17 Not tainted 5.15.189-syzkaller #0 [ 78.679055][ T4321] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025 [ 78.689116][ T4321] Call Trace: [ 78.692394][ T4321] [ 78.695323][ T4321] dump_stack_lvl+0x168/0x230 [ 78.700004][ T4321] ? load_image+0x3b0/0x3b0 [ 78.704518][ T4321] ? show_regs_print_info+0x20/0x20 [ 78.709722][ T4321] ? print_circular_bug+0x12b/0x1a0 [ 78.714922][ T4321] check_noncircular+0x274/0x310 [ 78.719867][ T4321] ? add_chain_block+0x940/0x940 [ 78.724804][ T4321] ? lockdep_lock+0xdc/0x1e0 [ 78.729396][ T4321] ? __lock_acquire+0x12d9/0x7c60 [ 78.734420][ T4321] ? lockdep_lock+0x1e0/0x1e0 [ 78.739114][ T4321] ? mark_lock+0x94/0x320 [ 78.743458][ T4321] __lock_acquire+0x2c33/0x7c60 [ 78.748311][ T4321] ? rcu_lock_release+0x5/0x20 [ 78.753073][ T4321] ? verify_lock_unused+0x140/0x140 [ 78.758283][ T4321] lock_acquire+0x197/0x3f0 [ 78.762787][ T4321] ? __flush_work+0xc1/0x1b0 [ 78.767374][ T4321] ? __lock_acquire+0x7c60/0x7c60 [ 78.772495][ T4321] ? read_lock_is_recursive+0x10/0x10 [ 78.777877][ T4321] ? start_flush_work+0x776/0x820 [ 78.782904][ T4321] __flush_work+0xdd/0x1b0 [ 78.787329][ T4321] ? __flush_work+0xc1/0x1b0 [ 78.791918][ T4321] ? flush_work+0x20/0x20 [ 78.796247][ T4321] ? try_to_grab_pending+0xf3/0x7e0 [ 78.801440][ T4321] ? lockdep_hardirqs_off+0x70/0x100 [ 78.806726][ T4321] ? mark_lock+0x94/0x320 [ 78.811061][ T4321] ? lockdep_hardirqs_on_prepare+0x3fc/0x760 [ 78.817039][ T4321] ? lock_chain_count+0x20/0x20 [ 78.821893][ T4321] ? mark_lock+0x94/0x320 [ 78.826219][ T4321] ? __cancel_work_timer+0x331/0x520 [ 78.831591][ T4321] __cancel_work_timer+0x3ac/0x520 [ 78.836705][ T4321] ? cancel_work_sync+0x20/0x20 [ 78.841552][ T4321] ? __cancel_work+0x1f4/0x2d0 [ 78.846313][ T4321] ? lockdep_hardirqs_on+0x94/0x140 [ 78.851504][ T4321] ? __cancel_work+0x26f/0x2d0 [ 78.856262][ T4321] ? cancel_work+0x20/0x20 [ 78.860676][ T4321] ? lock_chain_count+0x20/0x20 [ 78.865527][ T4321] hci_request_cancel_all+0xcc/0x300 [ 78.870817][ T4321] hci_dev_do_close+0x4e/0x1030 [ 78.875664][ T4321] ? _raw_spin_unlock_irqrestore+0xaa/0x100 [ 78.881687][ T4321] ? _raw_spin_unlock+0x40/0x40 [ 78.886538][ T4321] hci_rfkill_set_block+0x10a/0x190 [ 78.891733][ T4321] ? rcu_lock_release+0x20/0x20 [ 78.896579][ T4321] rfkill_set_block+0x1c6/0x420 [ 78.901442][ T4321] rfkill_fop_write+0x458/0x560 [ 78.906291][ T4321] ? _copy_from_user+0x111/0x170 [ 78.911228][ T4321] ? rfkill_fop_read+0x4b0/0x4b0 [ 78.916160][ T4321] ? common_file_perm+0x171/0x1c0 [ 78.921179][ T4321] ? fsnotify_perm+0x5d/0x560 [ 78.926034][ T4321] ? security_file_permission+0x75/0xa0 [ 78.931577][ T4321] do_iter_write+0x3e4/0x7b0 [ 78.936163][ T4321] do_writev+0x254/0x410 [ 78.940404][ T4321] ? do_readv+0x3e0/0x3e0 [ 78.944735][ T4321] ? lockdep_hardirqs_on_prepare+0x3fc/0x760 [ 78.950711][ T4321] ? lock_chain_count+0x20/0x20 [ 78.955561][ T4321] ? vtime_user_exit+0x2dc/0x400 [ 78.960493][ T4321] ? lockdep_hardirqs_on+0x94/0x140 [ 78.965687][ T4321] do_syscall_64+0x4c/0xa0 [ 78.970103][ T4321] ? clear_bhb_loop+0x30/0x80 [ 78.974773][ T4321] ? clear_bhb_loop+0x30/0x80 [ 78.979447][ T4321] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 78.985345][ T4321] RIP: 0033:0x7f82e30b6be9 [ 78.989756][ T4321] Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48 [ 79.009350][ T4321] RSP: 002b:00007fff9f853838 EFLAGS: 00000246 ORIG_RAX: 0000000000000014 [ 79.017756][ T4321] RAX: ffffffffffffffda RBX: 00007f82e32ddfa0 RCX: 00007f82e30b6be9 [ 79.025726][ T4321] RDX: 0000000000000002 RSI: 0000200000001280 RDI: 0000000000000003 [ 79.033688][ T4321] RBP: 00007f82e3139e19 R08: 0000000000000000 R09: 0000000000000000 [ 79.041650][ T4321] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 79.049615][ T4321] R13: 00007f82e32ddfa0 R14: 00007f82e32ddfa0 R15: 0000000000000003 [ 79.057584][ T4321]