Warning: Permanently added '10.128.1.240' (ED25519) to the list of known hosts. 2025/07/29 18:50:14 ignoring optional flag "sandboxArg"="0" 2025/07/29 18:50:15 parsed 1 programs syzkaller login: [ 70.356903][ T4189] cgroup: Unknown subsys name 'net' [ 70.520811][ T4189] cgroup: Unknown subsys name 'rlimit' [ 71.265473][ T1427] ieee802154 phy0 wpan0: encryption failed: -22 [ 71.272008][ T1427] ieee802154 phy1 wpan1: encryption failed: -22 [ 72.002881][ T4189] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k FS [ 73.620217][ T4205] chnl_net:caif_netlink_parms(): no params data found [ 73.674123][ T4205] bridge0: port 1(bridge_slave_0) entered blocking state [ 73.681621][ T4205] bridge0: port 1(bridge_slave_0) entered disabled state [ 73.689886][ T4205] device bridge_slave_0 entered promiscuous mode [ 73.699561][ T4205] bridge0: port 2(bridge_slave_1) entered blocking state [ 73.706829][ T4205] bridge0: port 2(bridge_slave_1) entered disabled state [ 73.714976][ T4205] device bridge_slave_1 entered promiscuous mode [ 73.741654][ T4205] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 73.753148][ T4205] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 73.778144][ T4205] team0: Port device team_slave_0 added [ 73.788162][ T4205] team0: Port device team_slave_1 added [ 73.807959][ T4205] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 73.815208][ T4205] 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. [ 73.841162][ T4205] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 73.856327][ T4205] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 73.863354][ T4205] 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. [ 73.889613][ T4205] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 73.921934][ T4205] device hsr_slave_0 entered promiscuous mode [ 73.929059][ T4205] device hsr_slave_1 entered promiscuous mode [ 74.030572][ T4205] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 74.042923][ T4205] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 74.055687][ T4205] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 74.065998][ T4205] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 74.092690][ T4205] bridge0: port 2(bridge_slave_1) entered blocking state [ 74.100029][ T4205] bridge0: port 2(bridge_slave_1) entered forwarding state [ 74.108259][ T4205] bridge0: port 1(bridge_slave_0) entered blocking state [ 74.115383][ T4205] bridge0: port 1(bridge_slave_0) entered forwarding state [ 74.177367][ T4205] 8021q: adding VLAN 0 to HW filter on device bond0 [ 74.193900][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 74.208375][ T144] bridge0: port 1(bridge_slave_0) entered disabled state [ 74.217657][ T144] bridge0: port 2(bridge_slave_1) entered disabled state [ 74.226590][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 74.242678][ T4205] 8021q: adding VLAN 0 to HW filter on device team0 [ 74.256316][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 74.266709][ T144] bridge0: port 1(bridge_slave_0) entered blocking state [ 74.274399][ T144] bridge0: port 1(bridge_slave_0) entered forwarding state [ 74.293383][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 74.302463][ T144] bridge0: port 2(bridge_slave_1) entered blocking state [ 74.309548][ T144] bridge0: port 2(bridge_slave_1) entered forwarding state [ 74.331145][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 74.343659][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 74.367036][ T3090] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 74.386006][ T3090] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 74.395150][ T3090] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 74.409308][ T4205] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 74.543094][ T3090] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 74.550749][ T3090] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 74.569714][ T4205] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 74.595173][ T3090] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 74.605592][ T3090] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 74.629685][ T3090] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 74.640636][ T3090] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 74.653710][ T4205] device veth0_vlan entered promiscuous mode [ 74.665236][ T3090] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 74.674812][ T3090] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 74.686761][ T4205] device veth1_vlan entered promiscuous mode [ 74.719797][ T3090] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 74.730841][ T3090] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 74.739670][ T3090] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 74.750462][ T3090] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 74.762850][ T4205] device veth0_macvtap entered promiscuous mode [ 74.773771][ T4205] device veth1_macvtap entered promiscuous mode [ 74.805112][ T4205] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 74.813124][ T3090] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 74.821814][ T3090] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 74.830742][ T3090] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 74.840202][ T3090] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 74.853607][ T4205] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 74.863647][ T3090] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 74.874060][ T3090] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 74.885273][ T4205] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 74.894611][ T4205] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 74.904004][ T4205] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 74.914700][ T4205] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 75.031060][ T4205] syz-executor (4205) used greatest stack depth: 21152 bytes left [ 75.451637][ T154] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 75.461265][ T154] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 75.485656][ T3090] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 75.505021][ T155] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 75.521039][ T144] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 75.530235][ T144] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 75.539122][ T3090] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 77.919016][ T155] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 80.207777][ T155] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 80.279460][ T155] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 81.263484][ T155] device hsr_slave_0 left promiscuous mode [ 81.276993][ T155] device hsr_slave_1 left promiscuous mode [ 81.293373][ T155] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 81.300846][ T155] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 81.324970][ T155] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 81.334825][ T155] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 81.344190][ T155] device bridge_slave_1 left promiscuous mode [ 81.351307][ T155] bridge0: port 2(bridge_slave_1) entered disabled state [ 81.370664][ T155] device bridge_slave_0 left promiscuous mode [ 81.377224][ T155] bridge0: port 1(bridge_slave_0) entered disabled state [ 81.406886][ T155] device veth1_macvtap left promiscuous mode [ 81.413506][ T155] device veth0_macvtap left promiscuous mode [ 81.419605][ T155] device veth1_vlan left promiscuous mode [ 81.427449][ T155] device veth0_vlan left promiscuous mode [ 81.644700][ T155] team0 (unregistering): Port device team_slave_1 removed [ 81.660906][ T155] team0 (unregistering): Port device team_slave_0 removed [ 81.684041][ T155] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 81.700088][ T155] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 81.779265][ T155] bond0 (unregistering): Released all slaves 2025/07/29 18:50:30 executed programs: 0 [ 83.529864][ T4352] chnl_net:caif_netlink_parms(): no params data found [ 83.651235][ T4352] bridge0: port 1(bridge_slave_0) entered blocking state [ 83.660023][ T4352] bridge0: port 1(bridge_slave_0) entered disabled state [ 83.669302][ T4352] device bridge_slave_0 entered promiscuous mode [ 83.680851][ T4352] bridge0: port 2(bridge_slave_1) entered blocking state [ 83.688332][ T4352] bridge0: port 2(bridge_slave_1) entered disabled state [ 83.697895][ T4352] device bridge_slave_1 entered promiscuous mode [ 83.747761][ T4352] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 83.773796][ T4352] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 83.846855][ T4352] team0: Port device team_slave_0 added [ 83.856673][ T4352] team0: Port device team_slave_1 added [ 83.903832][ T4352] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 83.910825][ T4352] 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. [ 83.971354][ T4352] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 83.984887][ T4352] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 83.991868][ T4352] 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. [ 84.017899][ T4352] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 84.055664][ T4352] device hsr_slave_0 entered promiscuous mode [ 84.064348][ T4352] device hsr_slave_1 entered promiscuous mode [ 84.921327][ T4352] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 84.931583][ T4352] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 84.943138][ T4352] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 84.955251][ T4352] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 85.065986][ T4352] 8021q: adding VLAN 0 to HW filter on device bond0 [ 85.080438][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 85.089237][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 85.102007][ T4352] 8021q: adding VLAN 0 to HW filter on device team0 [ 85.152426][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 85.161636][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 85.172948][ T9] bridge0: port 1(bridge_slave_0) entered blocking state [ 85.180056][ T9] bridge0: port 1(bridge_slave_0) entered forwarding state [ 85.204197][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 85.213068][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 85.222157][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 85.231946][ T9] bridge0: port 2(bridge_slave_1) entered blocking state [ 85.239112][ T9] bridge0: port 2(bridge_slave_1) entered forwarding state [ 85.249423][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 85.258897][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 85.268680][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 85.279131][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 85.333985][ T4352] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 85.346856][ T4410] Bluetooth: hci0: command 0x0409 tx timeout [ 85.355456][ T4352] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 85.367816][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 85.376766][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 85.386540][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 85.395724][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 85.405104][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 85.414454][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 85.423358][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 85.471245][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 85.642665][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 85.650208][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 85.661665][ T4352] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 85.724882][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 85.734055][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 85.754355][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 85.766067][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 85.779518][ T4352] device veth0_vlan entered promiscuous mode [ 85.788058][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 85.796717][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 85.811837][ T4352] device veth1_vlan entered promiscuous mode [ 85.857492][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 85.866554][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 85.875563][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 85.887421][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 85.900152][ T4352] device veth0_macvtap entered promiscuous mode [ 85.910133][ T4352] device veth1_macvtap entered promiscuous mode [ 85.953029][ T4352] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 85.960412][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 85.969120][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 85.978290][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 85.987702][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 85.999933][ T4352] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 86.011421][ T4352] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 86.020535][ T4352] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 86.030702][ T4352] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 86.039848][ T4352] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 86.051581][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 86.060694][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 86.171479][ T154] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 86.204886][ T154] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 86.245520][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 86.268944][ T3090] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 86.281141][ T3090] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 86.356644][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 86.559796][ T4498] [ 86.562174][ T4498] ====================================================== [ 86.569204][ T4498] WARNING: possible circular locking dependency detected [ 86.576245][ T4498] 5.15.189-syzkaller #0 Not tainted [ 86.581545][ T4498] ------------------------------------------------------ [ 86.588569][ T4498] syz.0.16/4498 is trying to acquire lock: [ 86.594381][ T4498] ffff88807d84cc28 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}, at: __flush_work+0xc1/0x1b0 [ 86.605663][ T4498] [ 86.605663][ T4498] but task is already holding lock: [ 86.613038][ T4498] ffffffff8d4be228 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x19e/0x560 [ 86.622728][ T4498] [ 86.622728][ T4498] which lock already depends on the new lock. [ 86.622728][ T4498] [ 86.623073][ T13] cfg80211: failed to load regulatory.db [ 86.633160][ T4498] [ 86.633160][ T4498] the existing dependency chain (in reverse order) is: [ 86.633168][ T4498] [ 86.633168][ T4498] -> #4 (rfkill_global_mutex){+.+.}-{3:3}: [ 86.633200][ T4498] __mutex_lock_common+0x1eb/0x2390 [ 86.633225][ T4498] mutex_lock_nested+0x17/0x20 [ 86.666966][ T4498] rfkill_register+0x33/0x8a0 [ 86.672188][ T4498] hci_register_dev+0x452/0x970 [ 86.677584][ T4498] vhci_create_device+0x32c/0x5c0 [ 86.683246][ T4498] vhci_write+0x391/0x450 [ 86.688119][ T4498] vfs_write+0x712/0xd00 [ 86.692903][ T4498] ksys_write+0x14d/0x250 [ 86.697948][ T4498] do_syscall_64+0x4c/0xa0 [ 86.702903][ T4498] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 86.710035][ T4498] [ 86.710035][ T4498] -> #3 (&data->open_mutex){+.+.}-{3:3}: [ 86.717957][ T4498] __mutex_lock_common+0x1eb/0x2390 [ 86.723694][ T4498] mutex_lock_nested+0x17/0x20 [ 86.729095][ T4498] vhci_send_frame+0x88/0x100 [ 86.734317][ T4498] hci_send_frame+0x1a9/0x2e0 [ 86.739625][ T4498] hci_tx_work+0x9f9/0x1710 [ 86.744673][ T4498] process_one_work+0x863/0x1000 [ 86.750232][ T4498] worker_thread+0xaa8/0x12a0 [ 86.755448][ T4498] kthread+0x436/0x520 [ 86.760060][ T4498] ret_from_fork+0x1f/0x30 [ 86.765019][ T4498] [ 86.765019][ T4498] -> #2 ((work_completion)(&hdev->tx_work)){+.+.}-{0:0}: [ 86.774425][ T4498] __flush_work+0xdd/0x1b0 [ 86.779388][ T4498] hci_dev_do_close+0x1e7/0x1030 [ 86.784879][ T4498] hci_unregister_dev+0x2d7/0x580 [ 86.790455][ T4498] vhci_release+0x73/0xc0 [ 86.795334][ T4498] __fput+0x234/0x930 [ 86.799862][ T4498] task_work_run+0x125/0x1a0 [ 86.804990][ T4498] do_exit+0x61e/0x20a0 [ 86.809691][ T4498] do_group_exit+0x12e/0x300 [ 86.815070][ T4498] get_signal+0x6ca/0x12c0 [ 86.820028][ T4498] arch_do_signal_or_restart+0xc1/0x1300 [ 86.826198][ T4498] exit_to_user_mode_loop+0x9e/0x130 [ 86.832118][ T4498] exit_to_user_mode_prepare+0xb1/0x140 [ 86.838212][ T4498] syscall_exit_to_user_mode+0x16/0x40 [ 86.844213][ T4498] do_syscall_64+0x58/0xa0 [ 86.849173][ T4498] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 86.855614][ T4498] [ 86.855614][ T4498] -> #1 (&hdev->req_lock){+.+.}-{3:3}: [ 86.863290][ T4498] __mutex_lock_common+0x1eb/0x2390 [ 86.869033][ T4498] mutex_lock_nested+0x17/0x20 [ 86.874341][ T4498] bg_scan_update+0x44/0x3b0 [ 86.879481][ T4498] process_one_work+0x863/0x1000 [ 86.884957][ T4498] worker_thread+0xaa8/0x12a0 [ 86.890178][ T4498] kthread+0x436/0x520 [ 86.895047][ T4498] ret_from_fork+0x1f/0x30 [ 86.900001][ T4498] [ 86.900001][ T4498] -> #0 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}: [ 86.909842][ T4498] __lock_acquire+0x2c33/0x7c60 [ 86.915246][ T4498] lock_acquire+0x197/0x3f0 [ 86.920396][ T4498] __flush_work+0xdd/0x1b0 [ 86.925363][ T4498] __cancel_work_timer+0x3ac/0x520 [ 86.931015][ T4498] hci_request_cancel_all+0xcc/0x300 [ 86.936841][ T4498] hci_dev_do_close+0x4e/0x1030 [ 86.942276][ T4498] hci_rfkill_set_block+0x10a/0x190 [ 86.948018][ T4498] rfkill_set_block+0x1c6/0x420 [ 86.953502][ T4498] rfkill_fop_write+0x458/0x560 [ 86.958977][ T4498] vfs_write+0x300/0xd00 [ 86.963754][ T4498] ksys_write+0x14d/0x250 [ 86.968650][ T4498] do_syscall_64+0x4c/0xa0 [ 86.973617][ T4498] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 86.980058][ T4498] [ 86.980058][ T4498] other info that might help us debug this: [ 86.980058][ T4498] [ 86.990297][ T4498] Chain exists of: [ 86.990297][ T4498] (work_completion)(&hdev->bg_scan_update) --> &data->open_mutex --> rfkill_global_mutex [ 86.990297][ T4498] [ 87.006062][ T4498] Possible unsafe locking scenario: [ 87.006062][ T4498] [ 87.013526][ T4498] CPU0 CPU1 [ 87.018908][ T4498] ---- ---- [ 87.024284][ T4498] lock(rfkill_global_mutex); [ 87.029065][ T4498] lock(&data->open_mutex); [ 87.036191][ T4498] lock(rfkill_global_mutex); [ 87.043508][ T4498] lock((work_completion)(&hdev->bg_scan_update)); [ 87.050212][ T4498] [ 87.050212][ T4498] *** DEADLOCK *** [ 87.050212][ T4498] [ 87.058370][ T4498] 1 lock held by syz.0.16/4498: [ 87.063239][ T4498] #0: ffffffff8d4be228 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x19e/0x560 [ 87.073464][ T4498] [ 87.073464][ T4498] stack backtrace: [ 87.079385][ T4498] CPU: 1 PID: 4498 Comm: syz.0.16 Not tainted 5.15.189-syzkaller #0 [ 87.087395][ T4498] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 87.097497][ T4498] Call Trace: [ 87.100803][ T4498] [ 87.103763][ T4498] dump_stack_lvl+0x168/0x230 [ 87.108565][ T4498] ? load_image+0x3b0/0x3b0 [ 87.113096][ T4498] ? show_regs_print_info+0x20/0x20 [ 87.118318][ T4498] ? print_circular_bug+0x12b/0x1a0 [ 87.123557][ T4498] check_noncircular+0x274/0x310 [ 87.128535][ T4498] ? add_chain_block+0x940/0x940 [ 87.133641][ T4498] ? lockdep_lock+0xdc/0x1e0 [ 87.138257][ T4498] ? __lock_acquire+0x12d9/0x7c60 [ 87.143394][ T4498] ? lockdep_lock+0x1e0/0x1e0 [ 87.148106][ T4498] ? mark_lock+0x94/0x320 [ 87.152476][ T4498] __lock_acquire+0x2c33/0x7c60 [ 87.157365][ T4498] ? verify_lock_unused+0x140/0x140 [ 87.162598][ T4498] ? verify_lock_unused+0x140/0x140 [ 87.167840][ T4498] lock_acquire+0x197/0x3f0 [ 87.172367][ T4498] ? __flush_work+0xc1/0x1b0 [ 87.176979][ T4498] ? __lock_acquire+0x7c60/0x7c60 [ 87.182037][ T4498] ? read_lock_is_recursive+0x10/0x10 [ 87.187437][ T4498] ? start_flush_work+0x776/0x820 [ 87.192485][ T4498] ? _raw_spin_unlock_irqrestore+0xaa/0x100 [ 87.198392][ T4498] ? _raw_spin_unlock+0x40/0x40 [ 87.203251][ T4498] __flush_work+0xdd/0x1b0 [ 87.207671][ T4498] ? __flush_work+0xc1/0x1b0 [ 87.212268][ T4498] ? flush_work+0x20/0x20 [ 87.216606][ T4498] ? try_to_grab_pending+0xf3/0x7e0 [ 87.221809][ T4498] ? lockdep_hardirqs_off+0x70/0x100 [ 87.227093][ T4498] ? mark_lock+0x94/0x320 [ 87.231438][ T4498] ? lockdep_hardirqs_on_prepare+0x3fc/0x760 [ 87.237420][ T4498] ? lock_chain_count+0x20/0x20 [ 87.242313][ T4498] ? mark_lock+0x94/0x320 [ 87.246648][ T4498] ? __cancel_work_timer+0x331/0x520 [ 87.251939][ T4498] __cancel_work_timer+0x3ac/0x520 [ 87.257152][ T4498] ? cancel_work_sync+0x20/0x20 [ 87.262002][ T4498] ? __cancel_work+0x1f4/0x2d0 [ 87.266857][ T4498] ? lockdep_hardirqs_on+0x94/0x140 [ 87.272062][ T4498] ? __cancel_work+0x26f/0x2d0 [ 87.276829][ T4498] ? cancel_work+0x20/0x20 [ 87.281244][ T4498] ? lock_chain_count+0x20/0x20 [ 87.286214][ T4498] hci_request_cancel_all+0xcc/0x300 [ 87.291531][ T4498] hci_dev_do_close+0x4e/0x1030 [ 87.296415][ T4498] ? _raw_spin_unlock_irqrestore+0xaa/0x100 [ 87.302315][ T4498] ? _raw_spin_unlock+0x40/0x40 [ 87.307173][ T4498] hci_rfkill_set_block+0x10a/0x190 [ 87.312388][ T4498] ? rcu_lock_release+0x20/0x20 [ 87.317262][ T4498] rfkill_set_block+0x1c6/0x420 [ 87.322129][ T4498] rfkill_fop_write+0x458/0x560 [ 87.326997][ T4498] ? verify_lock_unused+0x140/0x140 [ 87.332205][ T4498] ? rfkill_fop_read+0x4b0/0x4b0 [ 87.337143][ T4498] ? common_file_perm+0x150/0x1c0 [ 87.342172][ T4498] ? fsnotify_perm+0x5d/0x560 [ 87.346968][ T4498] ? security_file_permission+0x75/0xa0 [ 87.352619][ T4498] ? rfkill_fop_read+0x4b0/0x4b0 [ 87.357564][ T4498] vfs_write+0x300/0xd00 [ 87.361809][ T4498] ? file_end_write+0x250/0x250 [ 87.366660][ T4498] ? __context_tracking_exit+0x4c/0x80 [ 87.372311][ T4498] ? __lock_acquire+0x7c60/0x7c60 [ 87.377363][ T4498] ? __fdget_pos+0x1e2/0x370 [ 87.381980][ T4498] ksys_write+0x14d/0x250 [ 87.386415][ T4498] ? __ia32_sys_read+0x80/0x80 [ 87.391306][ T4498] ? lockdep_hardirqs_on+0x94/0x140 [ 87.396523][ T4498] do_syscall_64+0x4c/0xa0 [ 87.400953][ T4498] ? clear_bhb_loop+0x30/0x80 [ 87.405634][ T4498] ? clear_bhb_loop+0x30/0x80 [ 87.410317][ T4498] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 87.416227][ T4498] RIP: 0033:0x7f90770199a9 [ 87.420839][ T4498] 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 [ 87.440539][ T4498] RSP: 002b:00007fff2fe30b48 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 87.448966][ T4498] RAX: ffffffffffffffda RBX: 00007f9077240fa0 RCX: 00007f90770199a9 [ 87.456939][ T4498] RDX: 0000000000000008 RSI: 0000200000000080 RDI: 0000000000000003 [ 87.464909][ T4498] RBP: 00007f907709bd69 R08: 0000000000000000 R09: 0000000000000000 [ 87.472888][ T4498] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 87.480863][ T4498] R13: 00007f9077240fa0 R14: 00007f9077240fa0 R15: 0000000000000003 [ 87.488839][ T4498] [ 87.520857][ T4411] Bluetooth: hci0: command 0x041b tx timeout