Warning: Permanently added '10.128.0.132' (ED25519) to the list of known hosts. 2026/09/19 05:47:40 parsed 1 programs 2026/09/19 05:47:40 serving rpc on tcp://38421 syzkaller login: [ 73.164568][ T4198] cgroup: Unknown subsys name 'net' [ 73.278715][ T4198] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size = 127995904 bytes [ 74.818246][ T4198] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k FS [ 76.823314][ T144] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 76.831303][ T144] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 76.841878][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 76.866491][ T154] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 76.874467][ T154] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 76.882721][ T1392] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 77.706799][ T4252] chnl_net:caif_netlink_parms(): no params data found [ 77.775287][ T4252] bridge0: port 1(bridge_slave_0) entered blocking state [ 77.784593][ T4252] bridge0: port 1(bridge_slave_0) entered disabled state [ 77.793262][ T4252] device bridge_slave_0 entered promiscuous mode [ 77.804927][ T4252] bridge0: port 2(bridge_slave_1) entered blocking state [ 77.812241][ T4252] bridge0: port 2(bridge_slave_1) entered disabled state [ 77.820428][ T4252] device bridge_slave_1 entered promiscuous mode [ 77.850292][ T4252] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 77.862596][ T4252] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 77.891203][ T4252] team0: Port device team_slave_0 added [ 77.899367][ T4252] team0: Port device team_slave_1 added [ 77.922845][ T4252] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 77.929843][ T4252] 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. [ 77.955964][ T4252] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 77.969683][ T4252] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 77.976856][ T4252] 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. [ 78.002809][ T4252] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 78.041156][ T4252] device hsr_slave_0 entered promiscuous mode [ 78.048588][ T4252] device hsr_slave_1 entered promiscuous mode [ 78.186754][ T4252] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 78.198857][ T4252] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 78.208943][ T4252] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 78.218736][ T4252] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 78.286210][ T4252] 8021q: adding VLAN 0 to HW filter on device bond0 [ 78.301392][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 78.395015][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 78.403483][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 78.426545][ T4252] 8021q: adding VLAN 0 to HW filter on device team0 [ 78.458090][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 78.467191][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 78.478163][ T154] bridge0: port 1(bridge_slave_0) entered blocking state [ 78.485545][ T154] bridge0: port 1(bridge_slave_0) entered forwarding state [ 78.499464][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 78.510094][ T1392] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 78.519260][ T1392] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 78.528755][ T1392] bridge0: port 2(bridge_slave_1) entered blocking state [ 78.535880][ T1392] bridge0: port 2(bridge_slave_1) entered forwarding state [ 78.548586][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 78.560245][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 78.574223][ T1392] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 78.584341][ T1392] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 78.596027][ T1392] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 78.608456][ T1392] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 78.620660][ T1392] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 78.631718][ T4252] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 78.724329][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 78.731847][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 78.746707][ T4252] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 78.765438][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 78.785416][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 78.794374][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 78.803258][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 78.839303][ T4252] device veth0_vlan entered promiscuous mode [ 78.850740][ T4252] device veth1_vlan entered promiscuous mode [ 78.858155][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 78.900989][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 78.910002][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 78.921146][ T4252] device veth0_macvtap entered promiscuous mode [ 78.953871][ T4252] device veth1_macvtap entered promiscuous mode [ 78.970423][ T4252] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 78.983056][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 78.991391][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 79.000038][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 79.009391][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 79.024013][ T4252] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 79.033280][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 79.041983][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 79.071002][ T4252] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 79.080198][ T4252] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 79.089496][ T4252] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 79.098840][ T4252] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 2026/09/19 05:47:50 executed programs: 0 [ 81.088653][ T4305] chnl_net:caif_netlink_parms(): no params data found [ 81.157104][ T4305] bridge0: port 1(bridge_slave_0) entered blocking state [ 81.164384][ T4305] bridge0: port 1(bridge_slave_0) entered disabled state [ 81.175728][ T4305] device bridge_slave_0 entered promiscuous mode [ 81.184435][ T4305] bridge0: port 2(bridge_slave_1) entered blocking state [ 81.191803][ T4305] bridge0: port 2(bridge_slave_1) entered disabled state [ 81.200886][ T4305] device bridge_slave_1 entered promiscuous mode [ 81.226284][ T4305] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 81.238118][ T4305] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 81.265320][ T4305] team0: Port device team_slave_0 added [ 81.273567][ T4305] team0: Port device team_slave_1 added [ 81.296377][ T4305] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 81.304059][ T4305] 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. [ 81.330951][ T4305] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 81.344276][ T4305] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 81.351261][ T4305] 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. [ 81.377522][ T4305] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 81.412300][ T4305] device hsr_slave_0 entered promiscuous mode [ 81.419490][ T4305] device hsr_slave_1 entered promiscuous mode [ 81.426614][ T4305] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 81.434935][ T4305] Cannot create hsr debugfs directory [ 81.520090][ T4305] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 82.972951][ T4271] Bluetooth: hci0: command 0x0409 tx timeout [ 83.738655][ T4305] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 83.778491][ T4305] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 83.821645][ T4305] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 83.933911][ T4305] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 83.947882][ T4305] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 83.971129][ T4305] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 83.981254][ T4305] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 84.052823][ T4305] 8021q: adding VLAN 0 to HW filter on device bond0 [ 84.071355][ T1392] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 84.079420][ T1392] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 84.090576][ T4305] 8021q: adding VLAN 0 to HW filter on device team0 [ 84.100317][ T1392] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 84.109350][ T1392] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 84.118408][ T1392] bridge0: port 1(bridge_slave_0) entered blocking state [ 84.125574][ T1392] bridge0: port 1(bridge_slave_0) entered forwarding state [ 84.136598][ T1392] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 84.145475][ T1392] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 84.154347][ T1392] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 84.162882][ T1392] bridge0: port 2(bridge_slave_1) entered blocking state [ 84.169927][ T1392] bridge0: port 2(bridge_slave_1) entered forwarding state [ 84.193966][ T1392] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 84.206988][ T1392] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 84.218968][ T1392] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 84.228084][ T1392] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 84.237183][ T1392] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 84.267093][ T1392] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 84.276024][ T1392] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 84.288587][ T1392] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 84.297733][ T1392] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 84.326246][ T1392] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 84.335113][ T1392] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 84.347056][ T4305] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 84.459411][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 84.467193][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 84.479887][ T4305] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 84.501269][ T9] device hsr_slave_0 left promiscuous mode [ 84.508039][ T9] device hsr_slave_1 left promiscuous mode [ 84.515046][ T9] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 84.523873][ T9] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 84.532637][ T9] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 84.540052][ T9] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 84.548190][ T9] device bridge_slave_1 left promiscuous mode [ 84.555619][ T9] bridge0: port 2(bridge_slave_1) entered disabled state [ 84.568955][ T9] device bridge_slave_0 left promiscuous mode [ 84.576841][ T9] bridge0: port 1(bridge_slave_0) entered disabled state [ 84.596539][ T9] device veth1_macvtap left promiscuous mode [ 84.602868][ T9] device veth0_macvtap left promiscuous mode [ 84.608917][ T9] device veth1_vlan left promiscuous mode [ 84.615686][ T9] device veth0_vlan left promiscuous mode [ 84.790109][ T9] team0 (unregistering): Port device team_slave_1 removed [ 84.807039][ T9] team0 (unregistering): Port device team_slave_0 removed [ 84.824671][ T9] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 84.839107][ T9] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 84.897032][ T9] bond0 (unregistering): Released all slaves [ 84.973478][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 84.984022][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 85.001837][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 85.010762][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 85.021477][ T4305] device veth0_vlan entered promiscuous mode [ 85.029273][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 85.038162][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 85.050779][ T4305] device veth1_vlan entered promiscuous mode [ 85.057252][ T4272] Bluetooth: hci0: command 0x041b tx timeout [ 85.074065][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 85.103617][ T1392] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 85.112331][ T1392] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 85.123190][ T4305] device veth0_macvtap entered promiscuous mode [ 85.131906][ T4305] device veth1_macvtap entered promiscuous mode [ 85.149682][ T4305] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 85.157207][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 85.173812][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 85.182357][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 85.192695][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 85.204043][ T4305] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 85.211411][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 85.220981][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 85.233453][ T4305] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 85.242392][ T4305] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 85.251121][ T4305] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 85.260253][ T4305] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 85.327153][ T144] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 85.338474][ T144] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 85.348026][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 85.374215][ T144] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 85.382289][ T144] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 85.389842][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 85.565492][ T4320] [ 85.567964][ T4320] ====================================================== [ 85.575090][ T4320] WARNING: possible circular locking dependency detected [ 85.582146][ T4320] syzkaller #0 Not tainted [ 85.586590][ T4320] ------------------------------------------------------ [ 85.593978][ T4320] syz.0.17/4320 is trying to acquire lock: [ 85.599802][ T4320] ffff88801f00d028 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}, at: __flush_work+0xfa/0x210 [ 85.610940][ T4320] [ 85.610940][ T4320] but task is already holding lock: [ 85.618327][ T4320] ffffffff8d6d6b68 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x1ae/0x560 [ 85.628019][ T4320] [ 85.628019][ T4320] which lock already depends on the new lock. [ 85.628019][ T4320] [ 85.638443][ T4320] [ 85.638443][ T4320] the existing dependency chain (in reverse order) is: [ 85.647485][ T4320] [ 85.647485][ T4320] -> #4 (rfkill_global_mutex){+.+.}-{3:3}: [ 85.655538][ T4320] __mutex_lock_common+0x1e5/0x2400 [ 85.661291][ T4320] mutex_lock_nested+0x17/0x20 [ 85.666612][ T4320] rfkill_register+0x2f/0x970 [ 85.671840][ T4320] hci_register_dev+0x459/0x980 [ 85.677242][ T4320] vhci_create_device+0x32e/0x5c0 [ 85.682828][ T4320] vhci_write+0x389/0x440 [ 85.687811][ T4320] vfs_write+0x748/0xd70 [ 85.692604][ T4320] ksys_write+0x153/0x260 [ 85.697482][ T4320] do_syscall_64+0x4c/0xa0 [ 85.702442][ T4320] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 85.708894][ T4320] [ 85.708894][ T4320] -> #3 (&data->open_mutex){+.+.}-{3:3}: [ 85.716749][ T4320] __mutex_lock_common+0x1e5/0x2400 [ 85.722509][ T4320] mutex_lock_nested+0x17/0x20 [ 85.727823][ T4320] vhci_send_frame+0x88/0x100 [ 85.733057][ T4320] hci_send_frame+0x1a9/0x2e0 [ 85.738417][ T4320] hci_tx_work+0x9b5/0x16d0 [ 85.743512][ T4320] process_one_work+0x867/0xff0 [ 85.748957][ T4320] worker_thread+0xad7/0x12a0 [ 85.754191][ T4320] kthread+0x42e/0x520 [ 85.758812][ T4320] ret_from_fork+0x1f/0x30 [ 85.763776][ T4320] [ 85.763776][ T4320] -> #2 ((work_completion)(&hdev->tx_work)){+.+.}-{0:0}: [ 85.773024][ T4320] __flush_work+0x116/0x210 [ 85.778090][ T4320] hci_dev_do_close+0x201/0x1020 [ 85.783593][ T4320] hci_unregister_dev+0x2eb/0x590 [ 85.789175][ T4320] vhci_release+0x73/0xc0 [ 85.794076][ T4320] __fput+0x212/0x8c0 [ 85.798612][ T4320] task_work_run+0x125/0x1a0 [ 85.803873][ T4320] do_exit+0x635/0x2110 [ 85.808596][ T4320] do_group_exit+0x12c/0x2f0 [ 85.813744][ T4320] get_signal+0x7eb/0x12e0 [ 85.818713][ T4320] arch_do_signal_or_restart+0xe6/0x12a0 [ 85.824921][ T4320] exit_to_user_mode_loop+0x9e/0x130 [ 85.830767][ T4320] exit_to_user_mode_prepare+0xee/0x180 [ 85.836869][ T4320] syscall_exit_to_user_mode+0x16/0x40 [ 85.842889][ T4320] do_syscall_64+0x58/0xa0 [ 85.847868][ T4320] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 85.854317][ T4320] [ 85.854317][ T4320] -> #1 (&hdev->req_lock){+.+.}-{3:3}: [ 85.862015][ T4320] __mutex_lock_common+0x1e5/0x2400 [ 85.867767][ T4320] mutex_lock_nested+0x17/0x20 [ 85.873089][ T4320] bg_scan_update+0x44/0x3b0 [ 85.878242][ T4320] process_one_work+0x867/0xff0 [ 85.883650][ T4320] worker_thread+0xad7/0x12a0 [ 85.888884][ T4320] kthread+0x42e/0x520 [ 85.893510][ T4320] ret_from_fork+0x1f/0x30 [ 85.898484][ T4320] [ 85.898484][ T4320] -> #0 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}: [ 85.908328][ T4320] __lock_acquire+0x2c66/0x7b50 [ 85.913736][ T4320] lock_acquire+0x19e/0x400 [ 85.918799][ T4320] __flush_work+0x116/0x210 [ 85.923867][ T4320] __cancel_work_timer+0x3f4/0x560 [ 85.929622][ T4320] hci_request_cancel_all+0xcc/0x300 [ 85.935472][ T4320] hci_dev_do_close+0x4e/0x1020 [ 85.940918][ T4320] hci_rfkill_set_block+0x101/0x180 [ 85.946669][ T4320] rfkill_set_block+0x1c1/0x3c0 [ 85.952078][ T4320] rfkill_fop_write+0x453/0x560 [ 85.957479][ T4320] vfs_write+0x304/0xd70 [ 85.962265][ T4320] ksys_write+0x153/0x260 [ 85.967146][ T4320] do_syscall_64+0x4c/0xa0 [ 85.972122][ T4320] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 85.978572][ T4320] [ 85.978572][ T4320] other info that might help us debug this: [ 85.978572][ T4320] [ 85.988846][ T4320] Chain exists of: [ 85.988846][ T4320] (work_completion)(&hdev->bg_scan_update) --> &data->open_mutex --> rfkill_global_mutex [ 85.988846][ T4320] [ 86.004616][ T4320] Possible unsafe locking scenario: [ 86.004616][ T4320] [ 86.012093][ T4320] CPU0 CPU1 [ 86.017480][ T4320] ---- ---- [ 86.022869][ T4320] lock(rfkill_global_mutex); [ 86.027702][ T4320] lock(&data->open_mutex); [ 86.034849][ T4320] lock(rfkill_global_mutex); [ 86.042164][ T4320] lock((work_completion)(&hdev->bg_scan_update)); [ 86.048818][ T4320] [ 86.048818][ T4320] *** DEADLOCK *** [ 86.048818][ T4320] [ 86.056984][ T4320] 1 lock held by syz.0.17/4320: [ 86.061857][ T4320] #0: ffffffff8d6d6b68 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x1ae/0x560 [ 86.072048][ T4320] [ 86.072048][ T4320] stack backtrace: [ 86.077980][ T4320] CPU: 1 PID: 4320 Comm: syz.0.17 Not tainted syzkaller #0 [ 86.085234][ T4320] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 [ 86.095344][ T4320] Call Trace: [ 86.098653][ T4320] [ 86.101600][ T4320] dump_stack_lvl+0x188/0x250 [ 86.106309][ T4320] ? load_image+0x410/0x410 [ 86.110845][ T4320] ? show_regs_print_info+0x20/0x20 [ 86.116086][ T4320] ? print_circular_bug+0x12b/0x1a0 [ 86.121320][ T4320] check_noncircular+0x296/0x330 [ 86.126296][ T4320] ? look_up_lock_class+0x71/0x110 [ 86.131448][ T4320] ? add_chain_block+0x9b0/0x9b0 [ 86.136410][ T4320] ? lockdep_lock+0xf1/0x1f0 [ 86.141027][ T4320] ? __lock_acquire+0x1305/0x7b50 [ 86.146078][ T4320] ? mark_lock+0x94/0x320 [ 86.150434][ T4320] ? _find_first_zero_bit+0xd1/0xf0 [ 86.155669][ T4320] __lock_acquire+0x2c66/0x7b50 [ 86.160561][ T4320] ? verify_lock_unused+0x140/0x140 [ 86.165800][ T4320] ? verify_lock_unused+0x140/0x140 [ 86.171040][ T4320] lock_acquire+0x19e/0x400 [ 86.175571][ T4320] ? __flush_work+0xfa/0x210 [ 86.180193][ T4320] ? __lock_acquire+0x7b50/0x7b50 [ 86.185307][ T4320] ? read_lock_is_recursive+0x10/0x10 [ 86.190744][ T4320] ? start_flush_work+0x784/0x830 [ 86.195806][ T4320] __flush_work+0x116/0x210 [ 86.200346][ T4320] ? __flush_work+0xfa/0x210 [ 86.204972][ T4320] ? flush_work+0x20/0x20 [ 86.209328][ T4320] ? try_to_grab_pending+0xfb/0x820 [ 86.214561][ T4320] ? mark_lock+0x94/0x320 [ 86.218929][ T4320] ? lockdep_hardirqs_on_prepare+0x448/0x7c0 [ 86.224951][ T4320] ? lock_chain_count+0x20/0x20 [ 86.229842][ T4320] ? mark_lock+0x94/0x320 [ 86.234201][ T4320] ? __cancel_work_timer+0x36a/0x560 [ 86.239523][ T4320] __cancel_work_timer+0x3f4/0x560 [ 86.244671][ T4320] ? cancel_work_sync+0x20/0x20 [ 86.249555][ T4320] ? __cancel_work+0x1f9/0x2e0 [ 86.254353][ T4320] ? lockdep_hardirqs_on+0x94/0x140 [ 86.259589][ T4320] ? __cancel_work+0x27b/0x2e0 [ 86.264382][ T4320] ? cancel_work+0x20/0x20 [ 86.268828][ T4320] hci_request_cancel_all+0xcc/0x300 [ 86.274149][ T4320] hci_dev_do_close+0x4e/0x1020 [ 86.279031][ T4320] ? _raw_spin_unlock_irqrestore+0xc1/0x120 [ 86.284964][ T4320] ? _raw_spin_unlock+0x40/0x40 [ 86.289852][ T4320] hci_rfkill_set_block+0x101/0x180 [ 86.295217][ T4320] ? rcu_lock_release+0x20/0x20 [ 86.300113][ T4320] rfkill_set_block+0x1c1/0x3c0 [ 86.305013][ T4320] rfkill_fop_write+0x453/0x560 [ 86.309898][ T4320] ? rfkill_fop_read+0x560/0x560 [ 86.314860][ T4320] ? common_file_perm+0x160/0x1c0 [ 86.319927][ T4320] ? fsnotify_perm+0x5d/0x560 [ 86.324636][ T4320] ? security_file_permission+0x75/0xa0 [ 86.330303][ T4320] ? rfkill_fop_read+0x560/0x560 [ 86.335272][ T4320] vfs_write+0x304/0xd70 [ 86.339599][ T4320] ? file_end_write+0x250/0x250 [ 86.344489][ T4320] ? __context_tracking_exit+0x4c/0x80 [ 86.350013][ T4320] ? __fdget_pos+0x1e2/0x370 [ 86.354636][ T4320] ksys_write+0x153/0x260 [ 86.359002][ T4320] ? __ia32_sys_read+0x80/0x80 [ 86.363796][ T4320] ? lockdep_hardirqs_on+0x94/0x140 [ 86.369021][ T4320] do_syscall_64+0x4c/0xa0 [ 86.373466][ T4320] ? clear_bhb_loop+0x30/0x80 [ 86.378221][ T4320] ? clear_bhb_loop+0x30/0x80 [ 86.382950][ T4320] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 86.388902][ T4320] RIP: 0033:0x7fdb0705f159 [ 86.393355][ T4320] 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 [ 86.412988][ T4320] RSP: 002b:00007ffc65105798 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 86.421432][ T4320] RAX: ffffffffffffffda RBX: 00007fdb072e6fa0 RCX: 00007fdb0705f159 [ 86.429435][ T4320] RDX: 0000000000000008 RSI: 0000200000000080 RDI: 0000000000000003 [ 86.437442][ T4320] RBP: 00007fdb070f606b R08: 0000000000000000 R09: 0000000000000000 [ 86.445448][ T4320] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 86.453456][ T4320] R13: 00007fdb072e6fac R14: 00007fdb072e6fa0 R15: 00007fdb072e6fa0 [ 86.461464][ T4320] [ 86.653360][ T3157] cfg80211: failed to load regulatory.db