Warning: Permanently added '10.128.0.170' (ED25519) to the list of known hosts. 2026/05/31 08:46:15 parsed 1 programs [ 61.446677][ T4201] cgroup: Unknown subsys name 'net' [ 61.547808][ T4201] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size = 127995904 bytes [ 62.987506][ T4201] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k FS [ 65.684197][ T4245] chnl_net:caif_netlink_parms(): no params data found [ 65.741688][ T4245] bridge0: port 1(bridge_slave_0) entered blocking state [ 65.751104][ T4245] bridge0: port 1(bridge_slave_0) entered disabled state [ 65.759171][ T4245] device bridge_slave_0 entered promiscuous mode [ 65.768226][ T4245] bridge0: port 2(bridge_slave_1) entered blocking state [ 65.775492][ T4245] bridge0: port 2(bridge_slave_1) entered disabled state [ 65.783782][ T4245] device bridge_slave_1 entered promiscuous mode [ 65.806018][ T4245] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 65.817723][ T4245] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 65.839204][ T4245] team0: Port device team_slave_0 added [ 65.847022][ T4245] team0: Port device team_slave_1 added [ 65.865445][ T4245] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 65.872403][ T4245] 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. [ 65.898477][ T4245] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 65.911060][ T4245] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 65.918027][ T4245] 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. [ 65.943931][ T4245] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 65.981224][ T4245] device hsr_slave_0 entered promiscuous mode [ 65.989152][ T4245] device hsr_slave_1 entered promiscuous mode [ 66.132232][ T4245] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 66.161013][ T4245] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 66.177354][ T4245] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 66.196277][ T4245] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 66.220429][ T4245] bridge0: port 2(bridge_slave_1) entered blocking state [ 66.227603][ T4245] bridge0: port 2(bridge_slave_1) entered forwarding state [ 66.235366][ T4245] bridge0: port 1(bridge_slave_0) entered blocking state [ 66.242476][ T4245] bridge0: port 1(bridge_slave_0) entered forwarding state [ 66.282028][ T4245] 8021q: adding VLAN 0 to HW filter on device bond0 [ 66.297075][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 66.306963][ T9] bridge0: port 1(bridge_slave_0) entered disabled state [ 66.315411][ T9] bridge0: port 2(bridge_slave_1) entered disabled state [ 66.324495][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 66.337369][ T4245] 8021q: adding VLAN 0 to HW filter on device team0 [ 66.348310][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 66.356861][ T9] bridge0: port 1(bridge_slave_0) entered blocking state [ 66.363923][ T9] bridge0: port 1(bridge_slave_0) entered forwarding state [ 66.375067][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 66.383937][ T154] bridge0: port 2(bridge_slave_1) entered blocking state [ 66.390973][ T154] bridge0: port 2(bridge_slave_1) entered forwarding state [ 66.410514][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 66.419097][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 66.432019][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 66.444995][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 66.469879][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 66.481230][ T4245] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 66.581546][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 66.589139][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 66.601279][ T4245] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 66.617125][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 66.626769][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 66.658937][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 66.667373][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 66.676847][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 66.684662][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 66.694301][ T4245] device veth0_vlan entered promiscuous mode [ 66.714749][ T4245] device veth1_vlan entered promiscuous mode [ 66.732194][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 66.741141][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 66.750199][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 66.758959][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 66.769412][ T4245] device veth0_macvtap entered promiscuous mode [ 66.794186][ T4245] device veth1_macvtap entered promiscuous mode [ 66.809543][ T4245] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 66.817471][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 66.826076][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 66.834449][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 66.843720][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 66.854556][ T4245] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 66.861820][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 66.870632][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 66.898310][ T4245] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 66.907443][ T4245] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 66.916233][ T4245] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 66.925004][ T4245] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 67.250308][ T1266] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 67.264054][ T1266] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 67.280895][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 67.296075][ T1266] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 67.304956][ T1266] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 67.315405][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2026/05/31 08:46:24 executed programs: 0 [ 68.594958][ T1196] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 68.686375][ T4301] chnl_net:caif_netlink_parms(): no params data found [ 68.724917][ T4301] bridge0: port 1(bridge_slave_0) entered blocking state [ 68.732000][ T4301] bridge0: port 1(bridge_slave_0) entered disabled state [ 68.740286][ T4301] device bridge_slave_0 entered promiscuous mode [ 68.748502][ T4301] bridge0: port 2(bridge_slave_1) entered blocking state [ 68.755943][ T4301] bridge0: port 2(bridge_slave_1) entered disabled state [ 68.764057][ T4301] device bridge_slave_1 entered promiscuous mode [ 68.782443][ T4301] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 68.794294][ T4301] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 68.815318][ T4301] team0: Port device team_slave_0 added [ 68.822888][ T4301] team0: Port device team_slave_1 added [ 68.839872][ T4301] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 68.851575][ T4301] 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. [ 68.877494][ T4301] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 68.889322][ T4301] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 68.896302][ T4301] 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. [ 68.922639][ T4301] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 68.951151][ T4301] device hsr_slave_0 entered promiscuous mode [ 68.957892][ T4301] device hsr_slave_1 entered promiscuous mode [ 68.964615][ T4301] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 68.972367][ T4301] Cannot create hsr debugfs directory [ 70.593302][ T4262] Bluetooth: hci0: command 0x0409 tx timeout [ 70.995828][ T1423] ieee802154 phy0 wpan0: encryption failed: -22 [ 71.002375][ T1423] ieee802154 phy1 wpan1: encryption failed: -22 [ 71.548973][ T1196] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 71.587649][ T1196] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 71.670137][ T1196] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 72.602315][ T4301] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 72.611840][ T4301] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 72.621106][ T4301] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 72.649282][ T4301] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 72.682700][ T4281] Bluetooth: hci0: command 0x041b tx timeout [ 72.717371][ T4301] 8021q: adding VLAN 0 to HW filter on device bond0 [ 72.743478][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 72.751305][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 72.761961][ T4301] 8021q: adding VLAN 0 to HW filter on device team0 [ 72.786779][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 72.796801][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 72.805433][ T144] bridge0: port 1(bridge_slave_0) entered blocking state [ 72.812566][ T144] bridge0: port 1(bridge_slave_0) entered forwarding state [ 72.820870][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 72.831194][ T1266] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 72.841174][ T1266] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 72.849599][ T1266] bridge0: port 2(bridge_slave_1) entered blocking state [ 72.856661][ T1266] bridge0: port 2(bridge_slave_1) entered forwarding state [ 72.880378][ T1266] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 72.889936][ T1266] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 72.898967][ T1266] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 72.909182][ T1266] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 72.918390][ T1266] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 72.935445][ T1266] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 72.944405][ T1266] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 72.955289][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 72.964840][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 72.980513][ T1266] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 72.992465][ T1266] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 73.002313][ T4301] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 73.023125][ T1196] device hsr_slave_0 left promiscuous mode [ 73.029807][ T1196] device hsr_slave_1 left promiscuous mode [ 73.039089][ T1196] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 73.046804][ T1196] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 73.058179][ T1196] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 73.065838][ T1196] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 73.077420][ T1196] device bridge_slave_1 left promiscuous mode [ 73.084851][ T1196] bridge0: port 2(bridge_slave_1) entered disabled state [ 73.098745][ T1196] device bridge_slave_0 left promiscuous mode [ 73.105098][ T1196] bridge0: port 1(bridge_slave_0) entered disabled state [ 73.123354][ T1196] device veth1_macvtap left promiscuous mode [ 73.129512][ T1196] device veth0_macvtap left promiscuous mode [ 73.135866][ T1196] device veth1_vlan left promiscuous mode [ 73.141782][ T1196] device veth0_vlan left promiscuous mode [ 73.294078][ T1196] team0 (unregistering): Port device team_slave_1 removed [ 73.308630][ T1196] team0 (unregistering): Port device team_slave_0 removed [ 73.321120][ T1196] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 73.335970][ T1196] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 73.386879][ T1196] bond0 (unregistering): Released all slaves [ 73.465871][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 73.473861][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 73.485618][ T4301] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 73.514105][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 73.523392][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 73.540113][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 73.548272][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 73.557246][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 73.565863][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 73.576270][ T4301] device veth0_vlan entered promiscuous mode [ 73.587866][ T4301] device veth1_vlan entered promiscuous mode [ 73.611965][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 73.620399][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 73.628607][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 73.637480][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 73.648733][ T4301] device veth0_macvtap entered promiscuous mode [ 73.664923][ T4301] device veth1_macvtap entered promiscuous mode [ 73.681547][ T4301] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 73.690109][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 73.698118][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 73.706509][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 73.715849][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 73.730737][ T4301] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 73.741459][ T4301] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 73.750464][ T4301] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 73.759260][ T4301] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 73.768260][ T4301] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 73.778373][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 73.787233][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 73.855632][ T1266] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 73.870981][ T1266] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 73.888421][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 73.901907][ T154] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 73.910299][ T154] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 73.918564][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 74.032447][ T4346] [ 74.034822][ T4346] ====================================================== [ 74.041858][ T4346] WARNING: possible circular locking dependency detected [ 74.048903][ T4346] syzkaller #0 Not tainted [ 74.053321][ T4346] ------------------------------------------------------ [ 74.060343][ T4346] syz.0.17/4346 is trying to acquire lock: [ 74.066153][ T4346] ffff8880258e8c28 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}, at: __flush_work+0xfa/0x210 [ 74.077234][ T4346] [ 74.077234][ T4346] but task is already holding lock: [ 74.084601][ T4346] ffffffff8d6c65a8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x18b/0x560 [ 74.094279][ T4346] [ 74.094279][ T4346] which lock already depends on the new lock. [ 74.094279][ T4346] [ 74.104688][ T4346] [ 74.104688][ T4346] the existing dependency chain (in reverse order) is: [ 74.113710][ T4346] [ 74.113710][ T4346] -> #4 (rfkill_global_mutex){+.+.}-{3:3}: [ 74.121716][ T4346] __mutex_lock_common+0x1e3/0x2400 [ 74.127442][ T4346] mutex_lock_nested+0x17/0x20 [ 74.132736][ T4346] rfkill_register+0x33/0x980 [ 74.137948][ T4346] hci_register_dev+0x452/0x970 [ 74.143338][ T4346] vhci_create_device+0x32c/0x5c0 [ 74.148920][ T4346] vhci_write+0x391/0x450 [ 74.153783][ T4346] vfs_write+0x745/0xd60 [ 74.158566][ T4346] ksys_write+0x152/0x260 [ 74.163423][ T4346] do_syscall_64+0x4c/0xa0 [ 74.168370][ T4346] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 74.174801][ T4346] [ 74.174801][ T4346] -> #3 (&data->open_mutex){+.+.}-{3:3}: [ 74.182718][ T4346] __mutex_lock_common+0x1e3/0x2400 [ 74.188447][ T4346] mutex_lock_nested+0x17/0x20 [ 74.193740][ T4346] vhci_send_frame+0x88/0x100 [ 74.198951][ T4346] hci_send_frame+0x1a9/0x2e0 [ 74.204183][ T4346] hci_tx_work+0x9f9/0x1710 [ 74.209215][ T4346] process_one_work+0x85f/0x1010 [ 74.214680][ T4346] worker_thread+0xaa6/0x1290 [ 74.219889][ T4346] kthread+0x436/0x520 [ 74.224499][ T4346] ret_from_fork+0x1f/0x30 [ 74.229442][ T4346] [ 74.229442][ T4346] -> #2 ((work_completion)(&hdev->tx_work)){+.+.}-{0:0}: [ 74.238654][ T4346] __flush_work+0x116/0x210 [ 74.243693][ T4346] hci_dev_do_close+0x1e7/0x1030 [ 74.249166][ T4346] hci_unregister_dev+0x2d7/0x580 [ 74.254722][ T4346] vhci_release+0x73/0xc0 [ 74.259585][ T4346] __fput+0x234/0x930 [ 74.264091][ T4346] task_work_run+0x125/0x1a0 [ 74.269222][ T4346] do_exit+0x626/0x20c0 [ 74.273907][ T4346] do_group_exit+0x12e/0x300 [ 74.279027][ T4346] get_signal+0x6d6/0x12d0 [ 74.283973][ T4346] arch_do_signal_or_restart+0xe7/0x12c0 [ 74.290154][ T4346] exit_to_user_mode_loop+0x9e/0x130 [ 74.295974][ T4346] exit_to_user_mode_prepare+0xee/0x180 [ 74.302063][ T4346] syscall_exit_to_user_mode+0x16/0x40 [ 74.308059][ T4346] do_syscall_64+0x58/0xa0 [ 74.313012][ T4346] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 74.319439][ T4346] [ 74.319439][ T4346] -> #1 (&hdev->req_lock){+.+.}-{3:3}: [ 74.327096][ T4346] __mutex_lock_common+0x1e3/0x2400 [ 74.332845][ T4346] mutex_lock_nested+0x17/0x20 [ 74.338150][ T4346] bg_scan_update+0x44/0x3b0 [ 74.343267][ T4346] process_one_work+0x85f/0x1010 [ 74.348736][ T4346] worker_thread+0xaa6/0x1290 [ 74.353951][ T4346] kthread+0x436/0x520 [ 74.358566][ T4346] ret_from_fork+0x1f/0x30 [ 74.363512][ T4346] [ 74.363512][ T4346] -> #0 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}: [ 74.373339][ T4346] __lock_acquire+0x2c42/0x7d10 [ 74.378727][ T4346] lock_acquire+0x19e/0x400 [ 74.383760][ T4346] __flush_work+0x116/0x210 [ 74.388802][ T4346] __cancel_work_timer+0x3f4/0x560 [ 74.394449][ T4346] hci_request_cancel_all+0xcc/0x300 [ 74.400272][ T4346] hci_dev_do_close+0x4e/0x1030 [ 74.405661][ T4346] hci_rfkill_set_block+0x10a/0x190 [ 74.411394][ T4346] rfkill_set_block+0x1c9/0x3d0 [ 74.416777][ T4346] rfkill_fop_write+0x452/0x560 [ 74.422156][ T4346] vfs_write+0x30b/0xd60 [ 74.426925][ T4346] ksys_write+0x152/0x260 [ 74.431780][ T4346] do_syscall_64+0x4c/0xa0 [ 74.436726][ T4346] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 74.443162][ T4346] [ 74.443162][ T4346] other info that might help us debug this: [ 74.443162][ T4346] [ 74.453392][ T4346] Chain exists of: [ 74.453392][ T4346] (work_completion)(&hdev->bg_scan_update) --> &data->open_mutex --> rfkill_global_mutex [ 74.453392][ T4346] [ 74.469136][ T4346] Possible unsafe locking scenario: [ 74.469136][ T4346] [ 74.476594][ T4346] CPU0 CPU1 [ 74.481961][ T4346] ---- ---- [ 74.487337][ T4346] lock(rfkill_global_mutex); [ 74.492118][ T4346] lock(&data->open_mutex); [ 74.499246][ T4346] lock(rfkill_global_mutex); [ 74.506630][ T4346] lock((work_completion)(&hdev->bg_scan_update)); [ 74.513228][ T4346] [ 74.513228][ T4346] *** DEADLOCK *** [ 74.513228][ T4346] [ 74.521491][ T4346] 1 lock held by syz.0.17/4346: [ 74.526340][ T4346] #0: ffffffff8d6c65a8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x18b/0x560 [ 74.536448][ T4346] [ 74.536448][ T4346] stack backtrace: [ 74.542379][ T4346] CPU: 1 PID: 4346 Comm: syz.0.17 Not tainted syzkaller #0 [ 74.549580][ T4346] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 74.559650][ T4346] Call Trace: [ 74.562939][ T4346] [ 74.565917][ T4346] dump_stack_lvl+0x188/0x250 [ 74.570603][ T4346] ? load_image+0x400/0x400 [ 74.575137][ T4346] ? show_regs_print_info+0x20/0x20 [ 74.580360][ T4346] ? print_circular_bug+0x12b/0x1a0 [ 74.585574][ T4346] check_noncircular+0x296/0x330 [ 74.590521][ T4346] ? look_up_lock_class+0x71/0x110 [ 74.595644][ T4346] ? add_chain_block+0x940/0x940 [ 74.600596][ T4346] ? lockdep_lock+0xf1/0x1f0 [ 74.605194][ T4346] ? __lock_acquire+0x12e8/0x7d10 [ 74.610241][ T4346] ? mark_lock+0x94/0x320 [ 74.614574][ T4346] __lock_acquire+0x2c42/0x7d10 [ 74.619446][ T4346] ? verify_lock_unused+0x140/0x140 [ 74.624662][ T4346] ? verify_lock_unused+0x140/0x140 [ 74.629888][ T4346] ? mark_lock+0x94/0x320 [ 74.634236][ T4346] lock_acquire+0x19e/0x400 [ 74.638757][ T4346] ? __flush_work+0xfa/0x210 [ 74.643365][ T4346] ? __lock_acquire+0x7d10/0x7d10 [ 74.648405][ T4346] ? read_lock_is_recursive+0x10/0x10 [ 74.653818][ T4346] ? start_flush_work+0x776/0x820 [ 74.658856][ T4346] __flush_work+0x116/0x210 [ 74.663368][ T4346] ? __flush_work+0xfa/0x210 [ 74.667971][ T4346] ? flush_work+0x20/0x20 [ 74.672312][ T4346] ? try_to_grab_pending+0xfa/0x7f0 [ 74.677529][ T4346] ? mark_lock+0x94/0x320 [ 74.681872][ T4346] ? lockdep_hardirqs_on_prepare+0x409/0x770 [ 74.687873][ T4346] ? lock_chain_count+0x20/0x20 [ 74.692742][ T4346] ? mark_lock+0x94/0x320 [ 74.697083][ T4346] ? __cancel_work_timer+0x36a/0x560 [ 74.702389][ T4346] __cancel_work_timer+0x3f4/0x560 [ 74.707532][ T4346] ? cancel_work_sync+0x20/0x20 [ 74.712393][ T4346] ? __cancel_work+0x1f9/0x2e0 [ 74.717167][ T4346] ? lockdep_hardirqs_on+0x94/0x140 [ 74.722396][ T4346] ? __cancel_work+0x27b/0x2e0 [ 74.727195][ T4346] ? cancel_work+0x20/0x20 [ 74.731627][ T4346] ? lock_chain_count+0x20/0x20 [ 74.736632][ T4346] hci_request_cancel_all+0xcc/0x300 [ 74.741944][ T4346] hci_dev_do_close+0x4e/0x1030 [ 74.746819][ T4346] ? _raw_spin_unlock_irqrestore+0xc1/0x120 [ 74.752716][ T4346] ? _raw_spin_unlock+0x40/0x40 [ 74.757579][ T4346] hci_rfkill_set_block+0x10a/0x190 [ 74.762796][ T4346] ? rcu_lock_release+0x20/0x20 [ 74.767664][ T4346] rfkill_set_block+0x1c9/0x3d0 [ 74.772527][ T4346] rfkill_fop_write+0x452/0x560 [ 74.777386][ T4346] ? rfkill_fop_read+0x520/0x520 [ 74.782332][ T4346] ? common_file_perm+0xc0/0x1c0 [ 74.787282][ T4346] ? fsnotify_perm+0x5d/0x560 [ 74.791971][ T4346] ? security_file_permission+0x75/0xa0 [ 74.797516][ T4346] ? rfkill_fop_read+0x520/0x520 [ 74.802450][ T4346] vfs_write+0x30b/0xd60 [ 74.806693][ T4346] ? file_end_write+0x250/0x250 [ 74.811538][ T4346] ? __context_tracking_exit+0x4c/0x80 [ 74.817004][ T4346] ? __lock_acquire+0x7d10/0x7d10 [ 74.822025][ T4346] ? __fdget_pos+0x1e2/0x370 [ 74.826613][ T4346] ksys_write+0x152/0x260 [ 74.830947][ T4346] ? __ia32_sys_read+0x80/0x80 [ 74.835712][ T4346] ? lockdep_hardirqs_on+0x94/0x140 [ 74.840915][ T4346] do_syscall_64+0x4c/0xa0 [ 74.845334][ T4346] ? clear_bhb_loop+0x30/0x80 [ 74.850039][ T4346] ? clear_bhb_loop+0x30/0x80 [ 74.854724][ T4346] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 74.860635][ T4346] RIP: 0033:0x7f3a8f4c7e59 [ 74.865057][ T4346] 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 [ 74.884660][ T4346] RSP: 002b:00007ffc15516d18 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 74.893073][ T4346] RAX: ffffffffffffffda RBX: 00007f3a8f740fa0 RCX: 00007f3a8f4c7e59 [ 74.901041][ T4346] RDX: 0000000000000008 RSI: 0000200000000080 RDI: 0000000000000003 [ 74.909015][ T4346] RBP: 00007f3a8f55dd6f R08: 0000000000000000 R09: 0000000000000000 [ 74.916982][ T4346] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 74.924953][ T4346] R13: 00007f3a8f740fac R14: 00007f3a8f740fa0 R15: 00007f3a8f740fa0 [ 74.932928][ T4346] [ 74.937340][ T4264] Bluetooth: hci0: command 0x040f tx timeout