Warning: Permanently added '10.128.1.2' (ED25519) to the list of known hosts. 2026/04/04 06:02:07 parsed 1 programs [ 70.103990][ T4188] cgroup: Unknown subsys name 'net' [ 70.208665][ T4188] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size = 127995904 bytes [ 71.533518][ T4188] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k FS [ 72.824669][ T4196] chnl_net:caif_netlink_parms(): no params data found [ 72.867956][ T4196] bridge0: port 1(bridge_slave_0) entered blocking state [ 72.875840][ T4196] bridge0: port 1(bridge_slave_0) entered disabled state [ 72.883965][ T4196] device bridge_slave_0 entered promiscuous mode [ 72.893745][ T4196] bridge0: port 2(bridge_slave_1) entered blocking state [ 72.901031][ T4196] bridge0: port 2(bridge_slave_1) entered disabled state [ 72.908896][ T4196] device bridge_slave_1 entered promiscuous mode [ 72.927656][ T4196] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 72.940029][ T4196] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 72.961835][ T4196] team0: Port device team_slave_0 added [ 72.971054][ T4196] team0: Port device team_slave_1 added [ 72.986437][ T4196] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 72.993445][ T4196] 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. [ 73.020211][ T4196] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 73.032985][ T4196] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 73.040078][ T4196] 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. [ 73.066276][ T4196] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 73.094686][ T4196] device hsr_slave_0 entered promiscuous mode [ 73.102086][ T4196] device hsr_slave_1 entered promiscuous mode [ 73.190626][ T4196] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 73.201987][ T4196] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 73.211314][ T4196] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 73.221479][ T4196] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 73.243821][ T4196] bridge0: port 2(bridge_slave_1) entered blocking state [ 73.251001][ T4196] bridge0: port 2(bridge_slave_1) entered forwarding state [ 73.258866][ T4196] bridge0: port 1(bridge_slave_0) entered blocking state [ 73.266321][ T4196] bridge0: port 1(bridge_slave_0) entered forwarding state [ 73.311172][ T4196] 8021q: adding VLAN 0 to HW filter on device bond0 [ 73.323392][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 73.333732][ T9] bridge0: port 1(bridge_slave_0) entered disabled state [ 73.342535][ T9] bridge0: port 2(bridge_slave_1) entered disabled state [ 73.353930][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 73.367509][ T4196] 8021q: adding VLAN 0 to HW filter on device team0 [ 73.379780][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 73.389196][ T155] bridge0: port 1(bridge_slave_0) entered blocking state [ 73.396453][ T155] bridge0: port 1(bridge_slave_0) entered forwarding state [ 73.411592][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 73.420915][ T155] bridge0: port 2(bridge_slave_1) entered blocking state [ 73.427958][ T155] bridge0: port 2(bridge_slave_1) entered forwarding state [ 73.444874][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 73.453642][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 73.465929][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 73.477364][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 73.488513][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 73.499572][ T4196] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 73.576062][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 73.584363][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 73.597923][ T4196] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 73.615967][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 73.635980][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 73.644615][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 73.652912][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 73.663803][ T4196] device veth0_vlan entered promiscuous mode [ 73.676377][ T4196] device veth1_vlan entered promiscuous mode [ 73.695426][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 73.704102][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 73.712775][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 73.723760][ T4196] device veth0_macvtap entered promiscuous mode [ 73.734392][ T4196] device veth1_macvtap entered promiscuous mode [ 73.752214][ T4196] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 73.760545][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 73.771601][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 73.783065][ T4196] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 73.793249][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 73.803622][ T4196] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 73.812909][ T4196] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 73.821861][ T4196] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 73.831135][ T4196] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 73.966982][ T4196] syz-executor (4196) used greatest stack depth: 19952 bytes left [ 73.986846][ T9] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 74.045764][ T1431] ieee802154 phy0 wpan0: encryption failed: -22 [ 74.052737][ T1431] ieee802154 phy1 wpan1: encryption failed: -22 [ 76.928007][ T9] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 79.424370][ T9] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 79.497220][ T9] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 80.263030][ T9] device hsr_slave_0 left promiscuous mode [ 80.280387][ T9] device hsr_slave_1 left promiscuous mode [ 80.300645][ T9] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 80.308300][ T9] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 80.321400][ T9] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 80.328837][ T9] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 80.370967][ T9] device bridge_slave_1 left promiscuous mode [ 80.379658][ T9] bridge0: port 2(bridge_slave_1) entered disabled state [ 80.416875][ T9] device bridge_slave_0 left promiscuous mode [ 80.440126][ T9] bridge0: port 1(bridge_slave_0) entered disabled state [ 80.490640][ T9] device veth1_macvtap left promiscuous mode [ 80.497148][ T9] device veth0_macvtap left promiscuous mode [ 80.505392][ T9] device veth1_vlan left promiscuous mode [ 80.512381][ T9] device veth0_vlan left promiscuous mode [ 80.649979][ T9] team0 (unregistering): Port device team_slave_1 removed [ 80.664055][ T9] team0 (unregistering): Port device team_slave_0 removed [ 80.676467][ T9] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 80.690709][ T9] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 80.739909][ T9] bond0 (unregistering): Released all slaves [ 81.531334][ T155] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 81.539590][ T155] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 81.576557][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 81.614641][ T155] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 81.632708][ T155] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 81.641339][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2026/04/04 06:02:23 executed programs: 0 [ 84.390628][ T4424] chnl_net:caif_netlink_parms(): no params data found [ 84.466633][ T4424] bridge0: port 1(bridge_slave_0) entered blocking state [ 84.474310][ T4424] bridge0: port 1(bridge_slave_0) entered disabled state [ 84.482980][ T4424] device bridge_slave_0 entered promiscuous mode [ 84.491787][ T4424] bridge0: port 2(bridge_slave_1) entered blocking state [ 84.498924][ T4424] bridge0: port 2(bridge_slave_1) entered disabled state [ 84.507539][ T4424] device bridge_slave_1 entered promiscuous mode [ 84.547455][ T4424] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 84.559766][ T4424] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 84.582752][ T4424] team0: Port device team_slave_0 added [ 84.591100][ T4424] team0: Port device team_slave_1 added [ 84.608413][ T4424] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 84.615566][ T4424] 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. [ 84.641704][ T4424] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 84.668606][ T4424] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 84.676835][ T4424] 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. [ 84.703284][ T4424] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 84.731243][ T4424] device hsr_slave_0 entered promiscuous mode [ 84.738034][ T4424] device hsr_slave_1 entered promiscuous mode [ 85.391205][ T4424] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 85.417023][ T4424] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 85.434131][ T4424] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 85.445093][ T4424] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 85.546832][ T4424] 8021q: adding VLAN 0 to HW filter on device bond0 [ 85.590685][ T4273] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 85.600494][ T4273] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 85.614765][ T4424] 8021q: adding VLAN 0 to HW filter on device team0 [ 85.631179][ T4273] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 85.643742][ T4273] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 85.652928][ T4273] bridge0: port 1(bridge_slave_0) entered blocking state [ 85.660052][ T4273] bridge0: port 1(bridge_slave_0) entered forwarding state [ 85.683995][ T4273] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 85.693277][ T4273] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 85.707629][ T4273] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 85.721473][ T4273] bridge0: port 2(bridge_slave_1) entered blocking state [ 85.728588][ T4273] bridge0: port 2(bridge_slave_1) entered forwarding state [ 85.739123][ T4273] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 85.748947][ T4273] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 85.773732][ T4273] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 85.785977][ T4273] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 85.798608][ T4273] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 85.811446][ T4273] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 85.822567][ T4273] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 85.831848][ T4273] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 85.846502][ T4424] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 85.860601][ T4424] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 85.874020][ T4273] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 85.883137][ T4273] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 85.893374][ T4273] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 86.050643][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 86.058133][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 86.074733][ T4424] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 86.096847][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 86.112277][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 86.134794][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 86.145134][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 86.157711][ T4424] device veth0_vlan entered promiscuous mode [ 86.167393][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 86.176478][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 86.193986][ T4424] device veth1_vlan entered promiscuous mode [ 86.201205][ T13] Bluetooth: hci0: command 0x0409 tx timeout [ 86.228775][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 86.239130][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 86.248596][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 86.258221][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 86.276931][ T4424] device veth0_macvtap entered promiscuous mode [ 86.291554][ T4424] device veth1_macvtap entered promiscuous mode [ 86.322165][ T4424] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 86.330828][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 86.351454][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 86.366139][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 86.381489][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 86.404208][ T4424] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 86.420469][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 86.434478][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 86.454056][ T4424] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 86.470061][ T4424] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 86.478982][ T4424] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 86.506549][ T4424] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 86.599435][ T4273] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 86.618527][ T4273] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 86.643648][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 86.665678][ T154] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 86.682972][ T154] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 86.702597][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 86.855570][ T4500] [ 86.857953][ T4500] ====================================================== [ 86.865606][ T4500] WARNING: possible circular locking dependency detected [ 86.872744][ T4500] syzkaller #0 Not tainted [ 86.877165][ T4500] ------------------------------------------------------ [ 86.884199][ T4500] syz.0.17/4500 is trying to acquire lock: [ 86.890011][ T4500] ffff88807483cc28 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}, at: __flush_work+0xfa/0x210 [ 86.901160][ T4500] [ 86.901160][ T4500] but task is already holding lock: [ 86.908694][ T4500] ffffffff8d6c51a8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x18b/0x560 [ 86.918376][ T4500] [ 86.918376][ T4500] which lock already depends on the new lock. [ 86.918376][ T4500] [ 86.928919][ T4500] [ 86.928919][ T4500] the existing dependency chain (in reverse order) is: [ 86.938042][ T4500] [ 86.938042][ T4500] -> #4 (rfkill_global_mutex){+.+.}-{3:3}: [ 86.946054][ T4500] __mutex_lock_common+0x1e3/0x2400 [ 86.951825][ T4500] mutex_lock_nested+0x17/0x20 [ 86.957220][ T4500] rfkill_register+0x33/0x8a0 [ 86.962434][ T4500] hci_register_dev+0x452/0x970 [ 86.967835][ T4500] vhci_create_device+0x32c/0x5c0 [ 86.973420][ T4500] vhci_write+0x391/0x450 [ 86.978290][ T4500] vfs_write+0x745/0xd60 [ 86.983065][ T4500] ksys_write+0x152/0x260 [ 86.988069][ T4500] do_syscall_64+0x4c/0xa0 [ 86.993020][ T4500] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 86.999453][ T4500] [ 86.999453][ T4500] -> #3 (&data->open_mutex){+.+.}-{3:3}: [ 87.007280][ T4500] __mutex_lock_common+0x1e3/0x2400 [ 87.013011][ T4500] mutex_lock_nested+0x17/0x20 [ 87.018409][ T4500] vhci_send_frame+0x88/0x100 [ 87.023629][ T4500] hci_send_frame+0x1a9/0x2e0 [ 87.028847][ T4500] hci_tx_work+0x9f9/0x1710 [ 87.033898][ T4500] process_one_work+0x85f/0x1010 [ 87.039398][ T4500] worker_thread+0xaa6/0x1290 [ 87.044613][ T4500] kthread+0x436/0x520 [ 87.049214][ T4500] ret_from_fork+0x1f/0x30 [ 87.054251][ T4500] [ 87.054251][ T4500] -> #2 ((work_completion)(&hdev->tx_work)){+.+.}-{0:0}: [ 87.063474][ T4500] __flush_work+0x116/0x210 [ 87.068862][ T4500] hci_dev_do_close+0x1e7/0x1030 [ 87.074419][ T4500] hci_unregister_dev+0x2d7/0x580 [ 87.079980][ T4500] vhci_release+0x73/0xc0 [ 87.084842][ T4500] __fput+0x234/0x930 [ 87.089361][ T4500] task_work_run+0x125/0x1a0 [ 87.094492][ T4500] do_exit+0x626/0x20c0 [ 87.099179][ T4500] do_group_exit+0x12e/0x300 [ 87.104322][ T4500] get_signal+0x6ca/0x12c0 [ 87.109274][ T4500] arch_do_signal_or_restart+0xe7/0x12c0 [ 87.115443][ T4500] exit_to_user_mode_loop+0x9e/0x130 [ 87.121313][ T4500] exit_to_user_mode_prepare+0xee/0x180 [ 87.127396][ T4500] syscall_exit_to_user_mode+0x16/0x40 [ 87.133399][ T4500] do_syscall_64+0x58/0xa0 [ 87.138357][ T4500] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 87.144925][ T4500] [ 87.144925][ T4500] -> #1 (&hdev->req_lock){+.+.}-{3:3}: [ 87.152756][ T4500] __mutex_lock_common+0x1e3/0x2400 [ 87.158577][ T4500] mutex_lock_nested+0x17/0x20 [ 87.163881][ T4500] bg_scan_update+0x44/0x3b0 [ 87.169092][ T4500] process_one_work+0x85f/0x1010 [ 87.174574][ T4500] worker_thread+0xaa6/0x1290 [ 87.179783][ T4500] kthread+0x436/0x520 [ 87.184391][ T4500] ret_from_fork+0x1f/0x30 [ 87.189429][ T4500] [ 87.189429][ T4500] -> #0 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}: [ 87.199256][ T4500] __lock_acquire+0x2c42/0x7d10 [ 87.204648][ T4500] lock_acquire+0x19e/0x400 [ 87.209691][ T4500] __flush_work+0x116/0x210 [ 87.214733][ T4500] __cancel_work_timer+0x3f4/0x560 [ 87.220389][ T4500] hci_request_cancel_all+0xcc/0x300 [ 87.226302][ T4500] hci_dev_do_close+0x4e/0x1030 [ 87.231689][ T4500] hci_rfkill_set_block+0x10a/0x190 [ 87.237511][ T4500] rfkill_set_block+0x1c6/0x420 [ 87.242899][ T4500] rfkill_fop_write+0x452/0x560 [ 87.248302][ T4500] do_iter_write+0x3e4/0x7b0 [ 87.254124][ T4500] do_writev+0x281/0x480 [ 87.258990][ T4500] do_syscall_64+0x4c/0xa0 [ 87.263945][ T4500] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 87.270464][ T4500] [ 87.270464][ T4500] other info that might help us debug this: [ 87.270464][ T4500] [ 87.280787][ T4500] Chain exists of: [ 87.280787][ T4500] (work_completion)(&hdev->bg_scan_update) --> &data->open_mutex --> rfkill_global_mutex [ 87.280787][ T4500] [ 87.297065][ T4500] Possible unsafe locking scenario: [ 87.297065][ T4500] [ 87.304614][ T4500] CPU0 CPU1 [ 87.310083][ T4500] ---- ---- [ 87.315467][ T4500] lock(rfkill_global_mutex); [ 87.320241][ T4500] lock(&data->open_mutex); [ 87.327365][ T4500] lock(rfkill_global_mutex); [ 87.334773][ T4500] lock((work_completion)(&hdev->bg_scan_update)); [ 87.341383][ T4500] [ 87.341383][ T4500] *** DEADLOCK *** [ 87.341383][ T4500] [ 87.349621][ T4500] 1 lock held by syz.0.17/4500: [ 87.354485][ T4500] #0: ffffffff8d6c51a8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x18b/0x560 [ 87.364697][ T4500] [ 87.364697][ T4500] stack backtrace: [ 87.371130][ T4500] CPU: 0 PID: 4500 Comm: syz.0.17 Not tainted syzkaller #0 [ 87.378611][ T4500] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026 [ 87.388775][ T4500] Call Trace: [ 87.392208][ T4500] [ 87.395178][ T4500] dump_stack_lvl+0x188/0x250 [ 87.399994][ T4500] ? load_image+0x400/0x400 [ 87.404694][ T4500] ? show_regs_print_info+0x20/0x20 [ 87.409924][ T4500] ? print_circular_bug+0x12b/0x1a0 [ 87.415143][ T4500] check_noncircular+0x296/0x330 [ 87.420104][ T4500] ? look_up_lock_class+0x71/0x110 [ 87.425242][ T4500] ? add_chain_block+0x940/0x940 [ 87.430210][ T4500] ? lockdep_lock+0xf1/0x1f0 [ 87.434944][ T4500] ? __lock_acquire+0x12e8/0x7d10 [ 87.439993][ T4500] ? mark_lock+0x94/0x320 [ 87.444352][ T4500] __lock_acquire+0x2c42/0x7d10 [ 87.449237][ T4500] ? verify_lock_unused+0x140/0x140 [ 87.454979][ T4500] ? verify_lock_unused+0x140/0x140 [ 87.460205][ T4500] ? mark_lock+0x94/0x320 [ 87.464572][ T4500] lock_acquire+0x19e/0x400 [ 87.469105][ T4500] ? __flush_work+0xfa/0x210 [ 87.474435][ T4500] ? __lock_acquire+0x7d10/0x7d10 [ 87.479616][ T4500] ? read_lock_is_recursive+0x10/0x10 [ 87.485149][ T4500] ? start_flush_work+0x776/0x820 [ 87.490194][ T4500] __flush_work+0x116/0x210 [ 87.494722][ T4500] ? __flush_work+0xfa/0x210 [ 87.499514][ T4500] ? flush_work+0x20/0x20 [ 87.503946][ T4500] ? try_to_grab_pending+0xfa/0x7f0 [ 87.509249][ T4500] ? mark_lock+0x94/0x320 [ 87.513599][ T4500] ? lockdep_hardirqs_on_prepare+0x409/0x770 [ 87.519686][ T4500] ? lock_chain_count+0x20/0x20 [ 87.524560][ T4500] ? mark_lock+0x94/0x320 [ 87.528915][ T4500] ? __cancel_work_timer+0x36a/0x560 [ 87.534229][ T4500] __cancel_work_timer+0x3f4/0x560 [ 87.539394][ T4500] ? cancel_work_sync+0x20/0x20 [ 87.544258][ T4500] ? __cancel_work+0x1f9/0x2e0 [ 87.549062][ T4500] ? lockdep_hardirqs_on+0x94/0x140 [ 87.554415][ T4500] ? __cancel_work+0x27b/0x2e0 [ 87.559209][ T4500] ? cancel_work+0x20/0x20 [ 87.563651][ T4500] ? lock_chain_count+0x20/0x20 [ 87.568808][ T4500] hci_request_cancel_all+0xcc/0x300 [ 87.574317][ T4500] hci_dev_do_close+0x4e/0x1030 [ 87.579435][ T4500] ? _raw_spin_unlock_irqrestore+0xc1/0x120 [ 87.585466][ T4500] ? _raw_spin_unlock+0x40/0x40 [ 87.590432][ T4500] hci_rfkill_set_block+0x10a/0x190 [ 87.595666][ T4500] ? rcu_lock_release+0x20/0x20 [ 87.600551][ T4500] rfkill_set_block+0x1c6/0x420 [ 87.605434][ T4500] rfkill_fop_write+0x452/0x560 [ 87.610308][ T4500] ? _copy_from_user+0x111/0x170 [ 87.615266][ T4500] ? rfkill_fop_read+0x4d0/0x4d0 [ 87.620318][ T4500] ? common_file_perm+0x171/0x1c0 [ 87.625355][ T4500] ? fsnotify_perm+0x5d/0x560 [ 87.630224][ T4500] ? security_file_permission+0x75/0xa0 [ 87.635796][ T4500] do_iter_write+0x3e4/0x7b0 [ 87.640505][ T4500] do_writev+0x281/0x480 [ 87.644808][ T4500] ? do_readv+0x460/0x460 [ 87.649170][ T4500] ? lockdep_hardirqs_on_prepare+0x409/0x770 [ 87.655272][ T4500] ? lock_chain_count+0x20/0x20 [ 87.660147][ T4500] ? vtime_user_exit+0x2c8/0x3e0 [ 87.665110][ T4500] ? lockdep_hardirqs_on+0x94/0x140 [ 87.670595][ T4500] do_syscall_64+0x4c/0xa0 [ 87.675119][ T4500] ? clear_bhb_loop+0x30/0x80 [ 87.679809][ T4500] ? clear_bhb_loop+0x30/0x80 [ 87.684609][ T4500] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 87.690517][ T4500] RIP: 0033:0x7f95be176819 [ 87.695130][ T4500] 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 [ 87.715027][ T4500] RSP: 002b:00007fffabdd4e88 EFLAGS: 00000246 ORIG_RAX: 0000000000000014 [ 87.723468][ T4500] RAX: ffffffffffffffda RBX: 00007f95be3effa0 RCX: 00007f95be176819 [ 87.731454][ T4500] RDX: 0000000000000001 RSI: 0000200000001280 RDI: 0000000000000003 [ 87.739527][ T4500] RBP: 00007f95be20cc91 R08: 0000000000000000 R09: 0000000000000000 [ 87.747521][ T4500] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 87.755591][ T4500] R13: 00007f95be3effac R14: 00007f95be3effa0 R15: 00007f95be3effa0 [ 87.763669][ T4500]