Warning: Permanently added '10.128.1.69' (ED25519) to the list of known hosts. 2026/04/04 18:42:23 parsed 1 programs [ 52.783763][ T4190] cgroup: Unknown subsys name 'net' [ 52.916384][ T4190] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size = 127995904 bytes [ 54.265283][ T4190] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k FS [ 56.255641][ T4215] chnl_net:caif_netlink_parms(): no params data found [ 56.296692][ T4215] bridge0: port 1(bridge_slave_0) entered blocking state [ 56.304364][ T4215] bridge0: port 1(bridge_slave_0) entered disabled state [ 56.313990][ T4215] device bridge_slave_0 entered promiscuous mode [ 56.323839][ T4215] bridge0: port 2(bridge_slave_1) entered blocking state [ 56.330938][ T4215] bridge0: port 2(bridge_slave_1) entered disabled state [ 56.340441][ T4215] device bridge_slave_1 entered promiscuous mode [ 56.366737][ T4215] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 56.379233][ T4215] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 56.407635][ T4215] team0: Port device team_slave_0 added [ 56.416676][ T4215] team0: Port device team_slave_1 added [ 56.438793][ T4215] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 56.445871][ T4215] 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. [ 56.473456][ T4215] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 56.486718][ T4215] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 56.495111][ T4215] 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. [ 56.522811][ T4215] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 56.562707][ T4215] device hsr_slave_0 entered promiscuous mode [ 56.569590][ T4215] device hsr_slave_1 entered promiscuous mode [ 56.698138][ T4215] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 56.710223][ T4215] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 56.720709][ T4215] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 56.731526][ T4215] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 56.759726][ T4215] bridge0: port 2(bridge_slave_1) entered blocking state [ 56.766954][ T4215] bridge0: port 2(bridge_slave_1) entered forwarding state [ 56.774895][ T4215] bridge0: port 1(bridge_slave_0) entered blocking state [ 56.782000][ T4215] bridge0: port 1(bridge_slave_0) entered forwarding state [ 56.843916][ T4215] 8021q: adding VLAN 0 to HW filter on device bond0 [ 56.859241][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 56.871251][ T144] bridge0: port 1(bridge_slave_0) entered disabled state [ 56.880028][ T144] bridge0: port 2(bridge_slave_1) entered disabled state [ 56.889765][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 56.905107][ T4215] 8021q: adding VLAN 0 to HW filter on device team0 [ 56.917762][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 56.927712][ T144] bridge0: port 1(bridge_slave_0) entered blocking state [ 56.934803][ T144] bridge0: port 1(bridge_slave_0) entered forwarding state [ 56.962153][ T3103] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 56.970969][ T3103] bridge0: port 2(bridge_slave_1) entered blocking state [ 56.978065][ T3103] bridge0: port 2(bridge_slave_1) entered forwarding state [ 56.988262][ T3103] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 56.999054][ T3103] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 57.010284][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 57.025871][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 57.039783][ T4215] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 57.054544][ T4215] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 57.063458][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 57.182532][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 57.189975][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 57.206150][ T4215] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 57.227469][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 57.250720][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 57.262094][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 57.270930][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 57.280456][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 57.290156][ T4215] device veth0_vlan entered promiscuous mode [ 57.303048][ T4215] device veth1_vlan entered promiscuous mode [ 57.324283][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 57.343275][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 57.352546][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 57.361006][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 57.373058][ T4215] device veth0_macvtap entered promiscuous mode [ 57.383443][ T4215] device veth1_macvtap entered promiscuous mode [ 57.401151][ T4215] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 57.410348][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 57.418717][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 57.427046][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 57.435808][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 57.446832][ T4215] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 57.455682][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 57.464636][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 57.474675][ T4215] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 57.483822][ T4215] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 57.493630][ T4215] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 57.502778][ T4215] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 58.736711][ T154] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 58.755695][ T154] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 58.782410][ T3103] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 58.798913][ T154] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 58.806878][ T154] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 58.814777][ T3103] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2026/04/04 18:42:31 executed programs: 0 [ 59.527301][ T4275] chnl_net:caif_netlink_parms(): no params data found [ 59.567687][ T9] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 59.595733][ T4275] bridge0: port 1(bridge_slave_0) entered blocking state [ 59.604052][ T4275] bridge0: port 1(bridge_slave_0) entered disabled state [ 59.613113][ T4275] device bridge_slave_0 entered promiscuous mode [ 59.620628][ T4275] bridge0: port 2(bridge_slave_1) entered blocking state [ 59.627910][ T4275] bridge0: port 2(bridge_slave_1) entered disabled state [ 59.637143][ T4275] device bridge_slave_1 entered promiscuous mode [ 59.653258][ T4275] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 59.664429][ T4275] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 59.682680][ T4275] team0: Port device team_slave_0 added [ 59.689894][ T4275] team0: Port device team_slave_1 added [ 59.703865][ T4275] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 59.710790][ T4275] 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. [ 59.736991][ T4275] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 59.748810][ T4275] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 59.755764][ T4275] 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. [ 59.781717][ T4275] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 59.806545][ T4275] device hsr_slave_0 entered promiscuous mode [ 59.813778][ T4275] device hsr_slave_1 entered promiscuous mode [ 59.820223][ T4275] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 59.828312][ T4275] Cannot create hsr debugfs directory [ 61.492184][ T4228] Bluetooth: hci0: command 0x0409 tx timeout [ 63.277818][ T9] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 63.346476][ T9] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 63.418595][ T9] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 63.576684][ T4227] Bluetooth: hci0: command 0x041b tx timeout [ 64.350218][ T4275] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 64.361209][ T4275] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 64.369759][ T4275] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 64.380079][ T4275] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 64.446523][ T4275] 8021q: adding VLAN 0 to HW filter on device bond0 [ 64.479169][ T3103] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 64.487284][ T3103] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 64.496885][ T4275] 8021q: adding VLAN 0 to HW filter on device team0 [ 64.526436][ T3103] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 64.536195][ T3103] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 64.544952][ T3103] bridge0: port 1(bridge_slave_0) entered blocking state [ 64.552032][ T3103] bridge0: port 1(bridge_slave_0) entered forwarding state [ 64.574558][ T3103] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 64.582683][ T3103] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 64.591254][ T3103] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 64.600134][ T3103] bridge0: port 2(bridge_slave_1) entered blocking state [ 64.607222][ T3103] bridge0: port 2(bridge_slave_1) entered forwarding state [ 64.615156][ T3103] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 64.632047][ T3103] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 64.640799][ T3103] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 64.650063][ T3103] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 64.658951][ T3103] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 64.684244][ T436] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 64.693569][ T436] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 64.706449][ T4275] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 64.717755][ T4275] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 64.730550][ T436] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 64.739215][ T436] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 64.747607][ T436] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 64.756425][ T436] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 64.766772][ T436] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 64.854361][ T436] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 64.862638][ T436] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 64.901815][ T4275] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 64.918234][ T436] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 64.927301][ T436] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 64.963846][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 64.973009][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 64.983520][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 64.991273][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 64.999698][ T4275] device veth0_vlan entered promiscuous mode [ 65.013140][ T4275] device veth1_vlan entered promiscuous mode [ 65.045605][ T3103] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 65.053679][ T3103] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 65.062521][ T3103] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 65.071037][ T3103] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 65.082285][ T4275] device veth0_macvtap entered promiscuous mode [ 65.092651][ T4275] device veth1_macvtap entered promiscuous mode [ 65.124493][ T4275] batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3e) already exists on: batadv_slave_0 [ 65.135633][ T4275] batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems! [ 65.146831][ T4275] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 65.157158][ T4275] batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3f) already exists on: batadv_slave_1 [ 65.167856][ T4275] batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems! [ 65.178872][ T4275] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 65.186231][ T3103] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 65.194616][ T3103] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 65.202540][ T3103] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 65.210884][ T3103] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 65.219427][ T3103] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 65.229420][ T3103] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 65.243258][ T4275] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 65.252199][ T4275] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 65.260873][ T4275] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 65.269982][ T4275] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 65.337466][ T3103] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 65.346091][ T3103] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 65.356687][ T3103] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 65.377863][ T9] device hsr_slave_0 left promiscuous mode [ 65.384818][ T9] device hsr_slave_1 left promiscuous mode [ 65.391065][ T9] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 65.398662][ T9] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 65.407380][ T9] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 65.415001][ T9] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 65.423150][ T9] device bridge_slave_1 left promiscuous mode [ 65.429829][ T9] bridge0: port 2(bridge_slave_1) entered disabled state [ 65.443491][ T9] device bridge_slave_0 left promiscuous mode [ 65.449631][ T9] bridge0: port 1(bridge_slave_0) entered disabled state [ 65.465547][ T9] device veth1_macvtap left promiscuous mode [ 65.471773][ T9] device veth0_macvtap left promiscuous mode [ 65.477832][ T9] device veth1_vlan left promiscuous mode [ 65.483805][ T9] device veth0_vlan left promiscuous mode [ 65.628340][ T9] team0 (unregistering): Port device team_slave_1 removed [ 65.640364][ T9] team0 (unregistering): Port device team_slave_0 removed [ 65.651741][ T4226] Bluetooth: hci0: command 0x040f tx timeout [ 65.660664][ T9] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 65.674475][ T9] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 65.723912][ T9] bond0 (unregistering): Released all slaves [ 65.810018][ T3103] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 65.818714][ T3103] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 65.828198][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 65.919795][ T4347] [ 65.922147][ T4347] ====================================================== [ 65.929151][ T4347] WARNING: possible circular locking dependency detected [ 65.936176][ T4347] syzkaller #0 Not tainted [ 65.940582][ T4347] ------------------------------------------------------ [ 65.947589][ T4347] syz.0.17/4347 is trying to acquire lock: [ 65.953382][ T4347] ffff8880275e0c28 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}, at: __flush_work+0xfa/0x210 [ 65.964443][ T4347] [ 65.964443][ T4347] but task is already holding lock: [ 65.971798][ T4347] ffffffff8d6c51a8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x18b/0x560 [ 65.981551][ T4347] [ 65.981551][ T4347] which lock already depends on the new lock. [ 65.981551][ T4347] [ 65.991943][ T4347] [ 65.991943][ T4347] the existing dependency chain (in reverse order) is: [ 66.000943][ T4347] [ 66.000943][ T4347] -> #4 (rfkill_global_mutex){+.+.}-{3:3}: [ 66.008927][ T4347] __mutex_lock_common+0x1e3/0x2400 [ 66.014649][ T4347] mutex_lock_nested+0x17/0x20 [ 66.019934][ T4347] rfkill_register+0x33/0x8a0 [ 66.025131][ T4347] hci_register_dev+0x452/0x970 [ 66.030501][ T4347] vhci_create_device+0x32c/0x5c0 [ 66.036053][ T4347] vhci_write+0x391/0x450 [ 66.040903][ T4347] vfs_write+0x745/0xd60 [ 66.045667][ T4347] ksys_write+0x152/0x260 [ 66.050514][ T4347] do_syscall_64+0x4c/0xa0 [ 66.055453][ T4347] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 66.061864][ T4347] [ 66.061864][ T4347] -> #3 (&data->open_mutex){+.+.}-{3:3}: [ 66.069680][ T4347] __mutex_lock_common+0x1e3/0x2400 [ 66.075398][ T4347] mutex_lock_nested+0x17/0x20 [ 66.080680][ T4347] vhci_send_frame+0x88/0x100 [ 66.085878][ T4347] hci_send_frame+0x1a9/0x2e0 [ 66.091075][ T4347] hci_tx_work+0x9f9/0x1710 [ 66.096107][ T4347] process_one_work+0x85f/0x1010 [ 66.101567][ T4347] worker_thread+0xaa6/0x1290 [ 66.106764][ T4347] kthread+0x436/0x520 [ 66.111349][ T4347] ret_from_fork+0x1f/0x30 [ 66.116278][ T4347] [ 66.116278][ T4347] -> #2 ((work_completion)(&hdev->tx_work)){+.+.}-{0:0}: [ 66.125476][ T4347] __flush_work+0x116/0x210 [ 66.130492][ T4347] hci_dev_do_close+0x1e7/0x1030 [ 66.135948][ T4347] hci_unregister_dev+0x2d7/0x580 [ 66.141488][ T4347] vhci_release+0x73/0xc0 [ 66.146333][ T4347] __fput+0x234/0x930 [ 66.150830][ T4347] task_work_run+0x125/0x1a0 [ 66.155936][ T4347] do_exit+0x626/0x20c0 [ 66.160604][ T4347] do_group_exit+0x12e/0x300 [ 66.165710][ T4347] get_signal+0x6ca/0x12c0 [ 66.170654][ T4347] arch_do_signal_or_restart+0xe7/0x12c0 [ 66.176806][ T4347] exit_to_user_mode_loop+0x9e/0x130 [ 66.182617][ T4347] exit_to_user_mode_prepare+0xee/0x180 [ 66.188675][ T4347] syscall_exit_to_user_mode+0x16/0x40 [ 66.194649][ T4347] do_syscall_64+0x58/0xa0 [ 66.199582][ T4347] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 66.205996][ T4347] [ 66.205996][ T4347] -> #1 (&hdev->req_lock){+.+.}-{3:3}: [ 66.213636][ T4347] __mutex_lock_common+0x1e3/0x2400 [ 66.219356][ T4347] mutex_lock_nested+0x17/0x20 [ 66.224636][ T4347] bg_scan_update+0x44/0x3b0 [ 66.229747][ T4347] process_one_work+0x85f/0x1010 [ 66.235204][ T4347] worker_thread+0xaa6/0x1290 [ 66.240397][ T4347] kthread+0x436/0x520 [ 66.244982][ T4347] ret_from_fork+0x1f/0x30 [ 66.249916][ T4347] [ 66.249916][ T4347] -> #0 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}: [ 66.259729][ T4347] __lock_acquire+0x2c42/0x7d10 [ 66.265101][ T4347] lock_acquire+0x19e/0x400 [ 66.270129][ T4347] __flush_work+0x116/0x210 [ 66.275151][ T4347] __cancel_work_timer+0x3f4/0x560 [ 66.280777][ T4347] hci_request_cancel_all+0xcc/0x300 [ 66.286577][ T4347] hci_dev_do_close+0x4e/0x1030 [ 66.291945][ T4347] hci_rfkill_set_block+0x10a/0x190 [ 66.297662][ T4347] rfkill_set_block+0x1c6/0x420 [ 66.303029][ T4347] rfkill_fop_write+0x452/0x560 [ 66.308401][ T4347] vfs_write+0x30b/0xd60 [ 66.313167][ T4347] ksys_write+0x152/0x260 [ 66.318013][ T4347] do_syscall_64+0x4c/0xa0 [ 66.322946][ T4347] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 66.329363][ T4347] [ 66.329363][ T4347] other info that might help us debug this: [ 66.329363][ T4347] [ 66.339576][ T4347] Chain exists of: [ 66.339576][ T4347] (work_completion)(&hdev->bg_scan_update) --> &data->open_mutex --> rfkill_global_mutex [ 66.339576][ T4347] [ 66.355387][ T4347] Possible unsafe locking scenario: [ 66.355387][ T4347] [ 66.362824][ T4347] CPU0 CPU1 [ 66.368178][ T4347] ---- ---- [ 66.373531][ T4347] lock(rfkill_global_mutex); [ 66.378288][ T4347] lock(&data->open_mutex); [ 66.385391][ T4347] lock(rfkill_global_mutex); [ 66.392666][ T4347] lock((work_completion)(&hdev->bg_scan_update)); [ 66.399250][ T4347] [ 66.399250][ T4347] *** DEADLOCK *** [ 66.399250][ T4347] [ 66.407396][ T4347] 1 lock held by syz.0.17/4347: [ 66.412235][ T4347] #0: ffffffff8d6c51a8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x18b/0x560 [ 66.422334][ T4347] [ 66.422334][ T4347] stack backtrace: [ 66.428231][ T4347] CPU: 0 PID: 4347 Comm: syz.0.17 Not tainted syzkaller #0 [ 66.435418][ T4347] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026 [ 66.445537][ T4347] Call Trace: [ 66.448807][ T4347] [ 66.451734][ T4347] dump_stack_lvl+0x188/0x250 [ 66.456412][ T4347] ? load_image+0x400/0x400 [ 66.460914][ T4347] ? show_regs_print_info+0x20/0x20 [ 66.466118][ T4347] ? print_circular_bug+0x12b/0x1a0 [ 66.471316][ T4347] check_noncircular+0x296/0x330 [ 66.476251][ T4347] ? look_up_lock_class+0x71/0x110 [ 66.481361][ T4347] ? add_chain_block+0x940/0x940 [ 66.486295][ T4347] ? lockdep_lock+0xf1/0x1f0 [ 66.490883][ T4347] ? __lock_acquire+0x12e8/0x7d10 [ 66.495908][ T4347] ? mark_lock+0x94/0x320 [ 66.500237][ T4347] __lock_acquire+0x2c42/0x7d10 [ 66.505097][ T4347] ? verify_lock_unused+0x140/0x140 [ 66.510294][ T4347] ? verify_lock_unused+0x140/0x140 [ 66.515508][ T4347] ? mark_lock+0x94/0x320 [ 66.519839][ T4347] lock_acquire+0x19e/0x400 [ 66.524342][ T4347] ? __flush_work+0xfa/0x210 [ 66.528928][ T4347] ? __lock_acquire+0x7d10/0x7d10 [ 66.533952][ T4347] ? read_lock_is_recursive+0x10/0x10 [ 66.539326][ T4347] ? start_flush_work+0x776/0x820 [ 66.544350][ T4347] __flush_work+0x116/0x210 [ 66.548850][ T4347] ? __flush_work+0xfa/0x210 [ 66.553434][ T4347] ? flush_work+0x20/0x20 [ 66.557756][ T4347] ? try_to_grab_pending+0xfa/0x7f0 [ 66.562950][ T4347] ? mark_lock+0x94/0x320 [ 66.567275][ T4347] ? lockdep_hardirqs_on_prepare+0x409/0x770 [ 66.573252][ T4347] ? lock_chain_count+0x20/0x20 [ 66.578104][ T4347] ? mark_lock+0x94/0x320 [ 66.582432][ T4347] ? __cancel_work_timer+0x36a/0x560 [ 66.587728][ T4347] __cancel_work_timer+0x3f4/0x560 [ 66.592847][ T4347] ? cancel_work_sync+0x20/0x20 [ 66.597695][ T4347] ? __cancel_work+0x1f9/0x2e0 [ 66.602456][ T4347] ? lockdep_hardirqs_on+0x94/0x140 [ 66.607656][ T4347] ? __cancel_work+0x27b/0x2e0 [ 66.612433][ T4347] ? cancel_work+0x20/0x20 [ 66.616845][ T4347] ? lock_chain_count+0x20/0x20 [ 66.621695][ T4347] hci_request_cancel_all+0xcc/0x300 [ 66.626980][ T4347] hci_dev_do_close+0x4e/0x1030 [ 66.631841][ T4347] ? _raw_spin_unlock_irqrestore+0xc1/0x120 [ 66.637735][ T4347] ? _raw_spin_unlock+0x40/0x40 [ 66.642587][ T4347] hci_rfkill_set_block+0x10a/0x190 [ 66.647785][ T4347] ? rcu_lock_release+0x20/0x20 [ 66.652638][ T4347] rfkill_set_block+0x1c6/0x420 [ 66.657496][ T4347] rfkill_fop_write+0x452/0x560 [ 66.662345][ T4347] ? rfkill_fop_read+0x4d0/0x4d0 [ 66.667284][ T4347] ? common_file_perm+0x110/0x1c0 [ 66.672308][ T4347] ? fsnotify_perm+0x5d/0x560 [ 66.676986][ T4347] ? security_file_permission+0x75/0xa0 [ 66.682529][ T4347] ? rfkill_fop_read+0x4d0/0x4d0 [ 66.687466][ T4347] vfs_write+0x30b/0xd60 [ 66.692962][ T4347] ? file_end_write+0x250/0x250 [ 66.697825][ T4347] ? __context_tracking_exit+0x4c/0x80 [ 66.703287][ T4347] ? __lock_acquire+0x7d10/0x7d10 [ 66.708317][ T4347] ? __fdget_pos+0x1e2/0x370 [ 66.712915][ T4347] ksys_write+0x152/0x260 [ 66.717240][ T4347] ? __ia32_sys_read+0x80/0x80 [ 66.722004][ T4347] ? lockdep_hardirqs_on+0x94/0x140 [ 66.727197][ T4347] do_syscall_64+0x4c/0xa0 [ 66.731611][ T4347] ? clear_bhb_loop+0x30/0x80 [ 66.736286][ T4347] ? clear_bhb_loop+0x30/0x80 [ 66.740959][ T4347] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 66.746857][ T4347] RIP: 0033:0x7f76289ca819 [ 66.751272][ T4347] 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 [ 66.770869][ T4347] RSP: 002b:00007fffdec5f188 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 66.779277][ T4347] RAX: ffffffffffffffda RBX: 00007f7628c43fa0 RCX: 00007f76289ca819 [ 66.787248][ T4347] RDX: 0000000000000008 RSI: 0000200000000080 RDI: 0000000000000003 [ 66.795212][ T4347] RBP: 00007f7628a60c91 R08: 0000000000000000 R09: 0000000000000000 [ 66.803178][ T4347] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 66.811144][ T4347] R13: 00007f7628c43fac R14: 00007f7628c43fa0 R15: 00007f7628c43fa0 [ 66.819120][ T4347]