Warning: Permanently added '10.128.1.14' (ED25519) to the list of known hosts. 2026/01/08 22:06:45 parsed 1 programs [ 73.426902][ T4186] cgroup: Unknown subsys name 'net' [ 73.562178][ T4186] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size = 127995904 bytes [ 75.040237][ T4186] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k FS [ 77.823313][ T154] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 77.844541][ T154] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 77.853797][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 77.870672][ T4224] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 77.879868][ T4224] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 77.889892][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 78.759447][ T4241] chnl_net:caif_netlink_parms(): no params data found [ 78.869714][ T4241] bridge0: port 1(bridge_slave_0) entered blocking state [ 78.877932][ T4241] bridge0: port 1(bridge_slave_0) entered disabled state [ 78.887127][ T4241] device bridge_slave_0 entered promiscuous mode [ 78.896902][ T4241] bridge0: port 2(bridge_slave_1) entered blocking state [ 78.904163][ T4241] bridge0: port 2(bridge_slave_1) entered disabled state [ 78.912350][ T4241] device bridge_slave_1 entered promiscuous mode [ 78.936315][ T4241] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 78.947707][ T4241] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 78.972836][ T4241] team0: Port device team_slave_0 added [ 78.980383][ T4241] team0: Port device team_slave_1 added [ 79.000738][ T4241] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 79.008109][ T4241] 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. [ 79.034335][ T4241] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 79.047094][ T4241] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 79.054061][ T4241] 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. [ 79.080341][ T4241] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 79.111770][ T4241] device hsr_slave_0 entered promiscuous mode [ 79.119507][ T4241] device hsr_slave_1 entered promiscuous mode [ 79.218638][ T4241] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 79.251654][ T4241] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 79.260969][ T4241] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 79.271087][ T4241] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 79.320550][ T4241] bridge0: port 2(bridge_slave_1) entered blocking state [ 79.328083][ T4241] bridge0: port 2(bridge_slave_1) entered forwarding state [ 79.336456][ T4241] bridge0: port 1(bridge_slave_0) entered blocking state [ 79.343825][ T4241] bridge0: port 1(bridge_slave_0) entered forwarding state [ 79.416526][ T4241] 8021q: adding VLAN 0 to HW filter on device bond0 [ 79.451194][ T144] bridge0: port 1(bridge_slave_0) entered disabled state [ 79.461044][ T144] bridge0: port 2(bridge_slave_1) entered disabled state [ 79.469364][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 79.480638][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 79.489027][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 79.501505][ T4241] 8021q: adding VLAN 0 to HW filter on device team0 [ 79.529948][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 79.538976][ T155] bridge0: port 1(bridge_slave_0) entered blocking state [ 79.546422][ T155] bridge0: port 1(bridge_slave_0) entered forwarding state [ 79.559763][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 79.569073][ T155] bridge0: port 2(bridge_slave_1) entered blocking state [ 79.576416][ T155] bridge0: port 2(bridge_slave_1) entered forwarding state [ 79.628102][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 79.637660][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 79.651069][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 79.665898][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 79.697818][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 79.710207][ T4241] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 79.828846][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 79.837048][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 79.870613][ T4241] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 79.906839][ T4224] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 79.923997][ T4224] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 79.946955][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 79.956336][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 79.968211][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 79.976654][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 79.987287][ T4241] device veth0_vlan entered promiscuous mode [ 80.009616][ T4241] device veth1_vlan entered promiscuous mode [ 80.059358][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 80.067957][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 80.076476][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 80.085576][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 80.097322][ T4241] device veth0_macvtap entered promiscuous mode [ 80.108120][ T4241] device veth1_macvtap entered promiscuous mode [ 80.135111][ T4241] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 80.143606][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 80.152466][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 80.161071][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 80.169866][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 80.186398][ T4241] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 80.195317][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 80.204698][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 80.215393][ T4241] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 80.224353][ T4241] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 80.234804][ T4241] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 80.243627][ T4241] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 2026/01/08 22:06:55 executed programs: 0 [ 81.460765][ T4299] chnl_net:caif_netlink_parms(): no params data found [ 81.523566][ T4299] bridge0: port 1(bridge_slave_0) entered blocking state [ 81.530804][ T4299] bridge0: port 1(bridge_slave_0) entered disabled state [ 81.539417][ T4299] device bridge_slave_0 entered promiscuous mode [ 81.548638][ T4299] bridge0: port 2(bridge_slave_1) entered blocking state [ 81.556177][ T4299] bridge0: port 2(bridge_slave_1) entered disabled state [ 81.564324][ T4299] device bridge_slave_1 entered promiscuous mode [ 81.591674][ T4299] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 81.604001][ T4299] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 81.639855][ T4299] team0: Port device team_slave_0 added [ 81.648516][ T4299] team0: Port device team_slave_1 added [ 81.670689][ T4299] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 81.678193][ T4299] 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. [ 81.706149][ T4299] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 81.719500][ T4299] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 81.726756][ T4299] 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. [ 81.752967][ T4299] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 81.799515][ T4299] device hsr_slave_0 entered promiscuous mode [ 81.809107][ T4299] device hsr_slave_1 entered promiscuous mode [ 81.816300][ T4299] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 81.824183][ T4299] Cannot create hsr debugfs directory [ 81.925072][ T4299] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 83.355490][ T4311] Bluetooth: hci0: command 0x0409 tx timeout [ 84.392231][ T4299] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 84.801391][ T4299] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 84.853684][ T4299] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 84.973526][ T4299] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 84.982938][ T4299] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 84.993211][ T4299] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 85.002907][ T4299] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 85.074362][ T4299] 8021q: adding VLAN 0 to HW filter on device bond0 [ 85.088025][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 85.096299][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 85.106851][ T4299] 8021q: adding VLAN 0 to HW filter on device team0 [ 85.138876][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 85.149162][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 85.158025][ T155] bridge0: port 1(bridge_slave_0) entered blocking state [ 85.165174][ T155] bridge0: port 1(bridge_slave_0) entered forwarding state [ 85.190909][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 85.199341][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 85.208680][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 85.217925][ T155] bridge0: port 2(bridge_slave_1) entered blocking state [ 85.225052][ T155] bridge0: port 2(bridge_slave_1) entered forwarding state [ 85.236722][ T4224] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 85.262018][ T4224] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 85.282746][ T4299] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 85.294316][ T4299] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 85.306378][ T4224] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 85.318092][ T4224] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 85.326941][ T4224] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 85.335999][ T4224] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 85.345804][ T4224] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 85.355307][ T4224] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 85.363856][ T4224] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 85.373073][ T4224] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 85.382199][ T4224] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 85.390308][ T4224] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 85.435504][ T4261] Bluetooth: hci0: command 0x041b tx timeout [ 85.483843][ T9] device hsr_slave_0 left promiscuous mode [ 85.492387][ T9] device hsr_slave_1 left promiscuous mode [ 85.502299][ T9] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 85.510432][ T9] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 85.522296][ T9] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 85.530072][ T9] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 85.540378][ T9] device bridge_slave_1 left promiscuous mode [ 85.547893][ T9] bridge0: port 2(bridge_slave_1) entered disabled state [ 85.561072][ T9] device bridge_slave_0 left promiscuous mode [ 85.569036][ T9] bridge0: port 1(bridge_slave_0) entered disabled state [ 85.588195][ T9] device veth1_macvtap left promiscuous mode [ 85.595011][ T9] device veth0_macvtap left promiscuous mode [ 85.601412][ T9] device veth1_vlan left promiscuous mode [ 85.607843][ T9] device veth0_vlan left promiscuous mode [ 85.777486][ T9] team0 (unregistering): Port device team_slave_1 removed [ 85.792161][ T9] team0 (unregistering): Port device team_slave_0 removed [ 85.808310][ T9] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 85.822346][ T9] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 85.882409][ T9] bond0 (unregistering): Released all slaves [ 85.958923][ T4224] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 85.966749][ T4224] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 85.980117][ T4299] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 85.998789][ T4224] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 86.007723][ T4224] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 86.032714][ T4277] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 86.045222][ T4277] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 86.061543][ T4277] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 86.070026][ T4277] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 86.080008][ T4299] device veth0_vlan entered promiscuous mode [ 86.092225][ T4299] device veth1_vlan entered promiscuous mode [ 86.099876][ T4277] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 86.130370][ T4277] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 86.140313][ T4277] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 86.151111][ T4299] device veth0_macvtap entered promiscuous mode [ 86.169307][ T4299] device veth1_macvtap entered promiscuous mode [ 86.188916][ T4299] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 86.200586][ T4299] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 86.211302][ T4277] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 86.219701][ T4277] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 86.227897][ T4277] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 86.236777][ T4277] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 86.246498][ T4277] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 86.256375][ T4277] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 86.269212][ T4299] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 86.278343][ T4299] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 86.287726][ T4299] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 86.296989][ T4299] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 86.354029][ T4224] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 86.364268][ T4224] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 86.390229][ T4277] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 86.405899][ T4277] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 86.417483][ T4277] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 86.428205][ T4224] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 86.568918][ T4324] [ 86.571337][ T4324] ====================================================== [ 86.578377][ T4324] WARNING: possible circular locking dependency detected [ 86.585436][ T4324] syzkaller #0 Not tainted [ 86.589901][ T4324] ------------------------------------------------------ [ 86.596931][ T4324] syz.0.17/4324 is trying to acquire lock: [ 86.602755][ T4324] ffff88802991cc28 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}, at: __flush_work+0xc1/0x1b0 [ 86.613940][ T4324] [ 86.613940][ T4324] but task is already holding lock: [ 86.621323][ T4324] ffffffff8d4ba7e8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x19e/0x560 [ 86.631017][ T4324] [ 86.631017][ T4324] which lock already depends on the new lock. [ 86.631017][ T4324] [ 86.641449][ T4324] [ 86.641449][ T4324] the existing dependency chain (in reverse order) is: [ 86.650479][ T4324] [ 86.650479][ T4324] -> #4 (rfkill_global_mutex){+.+.}-{3:3}: [ 86.658501][ T4324] __mutex_lock_common+0x1eb/0x2390 [ 86.664256][ T4324] mutex_lock_nested+0x17/0x20 [ 86.669572][ T4324] rfkill_register+0x33/0x8a0 [ 86.674798][ T4324] hci_register_dev+0x452/0x970 [ 86.680804][ T4324] vhci_create_device+0x32c/0x5c0 [ 86.686369][ T4324] vhci_write+0x391/0x450 [ 86.691252][ T4324] vfs_write+0x712/0xd00 [ 86.696139][ T4324] ksys_write+0x14d/0x250 [ 86.701009][ T4324] do_syscall_64+0x4c/0xa0 [ 86.705993][ T4324] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 86.712444][ T4324] [ 86.712444][ T4324] -> #3 (&data->open_mutex){+.+.}-{3:3}: [ 86.720297][ T4324] __mutex_lock_common+0x1eb/0x2390 [ 86.726054][ T4324] mutex_lock_nested+0x17/0x20 [ 86.731378][ T4324] vhci_send_frame+0x88/0x100 [ 86.736613][ T4324] hci_send_frame+0x1a9/0x2e0 [ 86.741835][ T4324] hci_tx_work+0x9f9/0x1710 [ 86.747039][ T4324] process_one_work+0x863/0x1000 [ 86.752530][ T4324] worker_thread+0xaa8/0x12a0 [ 86.757777][ T4324] kthread+0x436/0x520 [ 86.762407][ T4324] ret_from_fork+0x1f/0x30 [ 86.767376][ T4324] [ 86.767376][ T4324] -> #2 ((work_completion)(&hdev->tx_work)){+.+.}-{0:0}: [ 86.776619][ T4324] __flush_work+0xdd/0x1b0 [ 86.781585][ T4324] hci_dev_do_close+0x1e7/0x1030 [ 86.787187][ T4324] hci_unregister_dev+0x2d7/0x580 [ 86.792847][ T4324] vhci_release+0x73/0xc0 [ 86.797810][ T4324] __fput+0x234/0x930 [ 86.802446][ T4324] task_work_run+0x125/0x1a0 [ 86.807584][ T4324] do_exit+0x61e/0x20a0 [ 86.812301][ T4324] do_group_exit+0x12e/0x300 [ 86.817456][ T4324] get_signal+0x6ca/0x12c0 [ 86.822516][ T4324] arch_do_signal_or_restart+0xc1/0x1300 [ 86.828699][ T4324] exit_to_user_mode_loop+0x9e/0x130 [ 86.834716][ T4324] exit_to_user_mode_prepare+0xee/0x180 [ 86.840833][ T4324] syscall_exit_to_user_mode+0x16/0x40 [ 86.846883][ T4324] do_syscall_64+0x58/0xa0 [ 86.851864][ T4324] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 86.858321][ T4324] [ 86.858321][ T4324] -> #1 (&hdev->req_lock){+.+.}-{3:3}: [ 86.866024][ T4324] __mutex_lock_common+0x1eb/0x2390 [ 86.871779][ T4324] mutex_lock_nested+0x17/0x20 [ 86.877101][ T4324] bg_scan_update+0x44/0x3b0 [ 86.882237][ T4324] process_one_work+0x863/0x1000 [ 86.887717][ T4324] worker_thread+0xaa8/0x12a0 [ 86.892943][ T4324] kthread+0x436/0x520 [ 86.897556][ T4324] ret_from_fork+0x1f/0x30 [ 86.902619][ T4324] [ 86.902619][ T4324] -> #0 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}: [ 86.912644][ T4324] __lock_acquire+0x2c33/0x7c60 [ 86.918058][ T4324] lock_acquire+0x197/0x3f0 [ 86.923120][ T4324] __flush_work+0xdd/0x1b0 [ 86.928087][ T4324] __cancel_work_timer+0x3ac/0x520 [ 86.933757][ T4324] hci_request_cancel_all+0xcc/0x300 [ 86.939592][ T4324] hci_dev_do_close+0x4e/0x1030 [ 86.945055][ T4324] hci_rfkill_set_block+0x10a/0x190 [ 86.950817][ T4324] rfkill_set_block+0x1c6/0x420 [ 86.956220][ T4324] rfkill_fop_write+0x458/0x560 [ 86.961614][ T4324] vfs_write+0x300/0xd00 [ 86.966403][ T4324] ksys_write+0x14d/0x250 [ 86.971272][ T4324] do_syscall_64+0x4c/0xa0 [ 86.976230][ T4324] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 86.982675][ T4324] [ 86.982675][ T4324] other info that might help us debug this: [ 86.982675][ T4324] [ 86.992919][ T4324] Chain exists of: [ 86.992919][ T4324] (work_completion)(&hdev->bg_scan_update) --> &data->open_mutex --> rfkill_global_mutex [ 86.992919][ T4324] [ 87.008681][ T4324] Possible unsafe locking scenario: [ 87.008681][ T4324] [ 87.016261][ T4324] CPU0 CPU1 [ 87.021719][ T4324] ---- ---- [ 87.027102][ T4324] lock(rfkill_global_mutex); [ 87.031973][ T4324] lock(&data->open_mutex); [ 87.039128][ T4324] lock(rfkill_global_mutex); [ 87.046439][ T4324] lock((work_completion)(&hdev->bg_scan_update)); [ 87.053056][ T4324] [ 87.053056][ T4324] *** DEADLOCK *** [ 87.053056][ T4324] [ 87.061224][ T4324] 1 lock held by syz.0.17/4324: [ 87.066095][ T4324] #0: ffffffff8d4ba7e8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x19e/0x560 [ 87.076231][ T4324] [ 87.076231][ T4324] stack backtrace: [ 87.082150][ T4324] CPU: 0 PID: 4324 Comm: syz.0.17 Not tainted syzkaller #0 [ 87.089371][ T4324] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 [ 87.099580][ T4324] Call Trace: [ 87.102895][ T4324] [ 87.105850][ T4324] dump_stack_lvl+0x168/0x230 [ 87.110553][ T4324] ? load_image+0x3b0/0x3b0 [ 87.115077][ T4324] ? show_regs_print_info+0x20/0x20 [ 87.120409][ T4324] ? print_circular_bug+0x12b/0x1a0 [ 87.125726][ T4324] check_noncircular+0x274/0x310 [ 87.130732][ T4324] ? add_chain_block+0x940/0x940 [ 87.135706][ T4324] ? lockdep_lock+0xdc/0x1e0 [ 87.140325][ T4324] ? __lock_acquire+0x12d9/0x7c60 [ 87.145378][ T4324] ? lockdep_lock+0x1e0/0x1e0 [ 87.150082][ T4324] ? mark_lock+0x94/0x320 [ 87.154445][ T4324] __lock_acquire+0x2c33/0x7c60 [ 87.159339][ T4324] ? verify_lock_unused+0x140/0x140 [ 87.164571][ T4324] ? verify_lock_unused+0x140/0x140 [ 87.170062][ T4324] lock_acquire+0x197/0x3f0 [ 87.174602][ T4324] ? __flush_work+0xc1/0x1b0 [ 87.179274][ T4324] ? __lock_acquire+0x7c60/0x7c60 [ 87.184349][ T4324] ? read_lock_is_recursive+0x10/0x10 [ 87.189795][ T4324] ? start_flush_work+0x776/0x820 [ 87.194840][ T4324] ? _raw_spin_unlock_irqrestore+0xaa/0x100 [ 87.200758][ T4324] ? _raw_spin_unlock+0x40/0x40 [ 87.205637][ T4324] __flush_work+0xdd/0x1b0 [ 87.210090][ T4324] ? __flush_work+0xc1/0x1b0 [ 87.214711][ T4324] ? flush_work+0x20/0x20 [ 87.219058][ T4324] ? try_to_grab_pending+0xf3/0x7e0 [ 87.224279][ T4324] ? lockdep_hardirqs_off+0x70/0x100 [ 87.229594][ T4324] ? mark_lock+0x94/0x320 [ 87.233959][ T4324] ? lockdep_hardirqs_on_prepare+0x3fc/0x760 [ 87.239967][ T4324] ? lock_chain_count+0x20/0x20 [ 87.244854][ T4324] ? mark_lock+0x94/0x320 [ 87.249214][ T4324] ? __cancel_work_timer+0x331/0x520 [ 87.254630][ T4324] __cancel_work_timer+0x3ac/0x520 [ 87.259815][ T4324] ? cancel_work_sync+0x20/0x20 [ 87.264697][ T4324] ? __cancel_work+0x1f4/0x2d0 [ 87.269516][ T4324] ? lockdep_hardirqs_on+0x94/0x140 [ 87.274832][ T4324] ? __cancel_work+0x26f/0x2d0 [ 87.279636][ T4324] ? cancel_work+0x20/0x20 [ 87.284100][ T4324] ? lock_chain_count+0x20/0x20 [ 87.289068][ T4324] hci_request_cancel_all+0xcc/0x300 [ 87.294388][ T4324] hci_dev_do_close+0x4e/0x1030 [ 87.299283][ T4324] ? _raw_spin_unlock_irqrestore+0xaa/0x100 [ 87.305201][ T4324] ? _raw_spin_unlock+0x40/0x40 [ 87.310092][ T4324] hci_rfkill_set_block+0x10a/0x190 [ 87.315322][ T4324] ? rcu_lock_release+0x20/0x20 [ 87.320203][ T4324] rfkill_set_block+0x1c6/0x420 [ 87.325076][ T4324] rfkill_fop_write+0x458/0x560 [ 87.329950][ T4324] ? verify_lock_unused+0x140/0x140 [ 87.335190][ T4324] ? rfkill_fop_read+0x4b0/0x4b0 [ 87.340157][ T4324] ? common_file_perm+0xc0/0x1c0 [ 87.345115][ T4324] ? fsnotify_perm+0x5d/0x560 [ 87.349821][ T4324] ? security_file_permission+0x75/0xa0 [ 87.355398][ T4324] ? rfkill_fop_read+0x4b0/0x4b0 [ 87.360454][ T4324] vfs_write+0x300/0xd00 [ 87.364788][ T4324] ? file_end_write+0x250/0x250 [ 87.369674][ T4324] ? __context_tracking_exit+0x4c/0x80 [ 87.375165][ T4324] ? __lock_acquire+0x7c60/0x7c60 [ 87.380225][ T4324] ? __fdget_pos+0x1e2/0x370 [ 87.384866][ T4324] ksys_write+0x14d/0x250 [ 87.389246][ T4324] ? __ia32_sys_read+0x80/0x80 [ 87.394046][ T4324] ? lockdep_hardirqs_on+0x94/0x140 [ 87.399289][ T4324] do_syscall_64+0x4c/0xa0 [ 87.403740][ T4324] ? clear_bhb_loop+0x30/0x80 [ 87.408546][ T4324] ? clear_bhb_loop+0x30/0x80 [ 87.413444][ T4324] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 87.419405][ T4324] RIP: 0033:0x7fdfaa8e2749 [ 87.423853][ T4324] 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 [ 87.443718][ T4324] RSP: 002b:00007ffd352b33d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 87.452176][ T4324] RAX: ffffffffffffffda RBX: 00007fdfaab38fa0 RCX: 00007fdfaa8e2749 [ 87.460183][ T4324] RDX: 0000000000000008 RSI: 0000200000000000 RDI: 0000000000000003 [ 87.468185][ T4324] RBP: 00007fdfaa966f91 R08: 0000000000000000 R09: 0000000000000000 [ 87.476192][ T4324] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 87.484286][ T4324] R13: 00007fdfaab38fa0 R14: 00007fdfaab38fa0 R15: 0000000000000003 [ 87.492295][ T4324] [ 87.524940][ T1108] Bluetooth: hci0: command 0x040f tx timeout