Warning: Permanently added '10.128.0.207' (ED25519) to the list of known hosts. 2025/11/09 17:55:03 parsed 1 programs [ 63.196277][ T4189] cgroup: Unknown subsys name 'net' [ 63.344729][ T4189] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size = 127995904 bytes [ 64.920932][ T4189] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k FS [ 67.918570][ T9] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 67.926582][ T9] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 67.952611][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 67.968178][ T155] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 67.976373][ T155] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 67.985582][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 68.579981][ T4247] chnl_net:caif_netlink_parms(): no params data found [ 68.761908][ T4247] bridge0: port 1(bridge_slave_0) entered blocking state [ 68.769581][ T4247] bridge0: port 1(bridge_slave_0) entered disabled state [ 68.777984][ T4247] device bridge_slave_0 entered promiscuous mode [ 68.792545][ T4247] bridge0: port 2(bridge_slave_1) entered blocking state [ 68.799799][ T4247] bridge0: port 2(bridge_slave_1) entered disabled state [ 68.808029][ T4247] device bridge_slave_1 entered promiscuous mode [ 68.844868][ T4247] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 68.856443][ T4247] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 68.881848][ T4247] team0: Port device team_slave_0 added [ 68.889580][ T4247] team0: Port device team_slave_1 added [ 68.908742][ T4247] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 68.915746][ T4247] 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. [ 68.942037][ T4247] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 68.955032][ T4247] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 68.962176][ T4247] 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. [ 68.988241][ T4247] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 69.019103][ T4247] device hsr_slave_0 entered promiscuous mode [ 69.026165][ T4247] device hsr_slave_1 entered promiscuous mode [ 69.141714][ T4247] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 69.152830][ T4247] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 69.163360][ T4247] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 69.198861][ T4247] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 69.225707][ T4247] bridge0: port 2(bridge_slave_1) entered blocking state [ 69.232933][ T4247] bridge0: port 2(bridge_slave_1) entered forwarding state [ 69.241003][ T4247] bridge0: port 1(bridge_slave_0) entered blocking state [ 69.248099][ T4247] bridge0: port 1(bridge_slave_0) entered forwarding state [ 69.314826][ T4247] 8021q: adding VLAN 0 to HW filter on device bond0 [ 69.330393][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 69.341548][ T9] bridge0: port 1(bridge_slave_0) entered disabled state [ 69.350760][ T9] bridge0: port 2(bridge_slave_1) entered disabled state [ 69.359386][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 69.395637][ T4247] 8021q: adding VLAN 0 to HW filter on device team0 [ 69.406953][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 69.416487][ T9] bridge0: port 1(bridge_slave_0) entered blocking state [ 69.423616][ T9] bridge0: port 1(bridge_slave_0) entered forwarding state [ 69.442631][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 69.451539][ T9] bridge0: port 2(bridge_slave_1) entered blocking state [ 69.458669][ T9] bridge0: port 2(bridge_slave_1) entered forwarding state [ 69.494244][ T1434] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 69.503947][ T1434] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 69.514456][ T1434] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 69.523416][ T1434] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 69.539691][ T4247] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 69.550178][ T4247] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 69.564357][ T1434] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 69.572993][ T1434] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 69.582539][ T1434] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 69.591388][ T1434] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 69.600678][ T1434] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 69.723786][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 69.731412][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 69.745612][ T4247] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 69.782596][ T1434] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 69.791928][ T1434] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 69.809571][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 69.818429][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 69.826981][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 69.835370][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 69.849860][ T4247] device veth0_vlan entered promiscuous mode [ 69.886051][ T4247] device veth1_vlan entered promiscuous mode [ 69.907604][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 69.916945][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 69.925300][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 69.934297][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 69.945523][ T4247] device veth0_macvtap entered promiscuous mode [ 69.957523][ T4247] device veth1_macvtap entered promiscuous mode [ 69.990252][ T4247] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 70.003997][ T4247] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 70.017415][ T4247] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 70.029103][ T4247] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 70.038378][ T4247] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 70.047231][ T4247] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 70.058692][ T1434] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 70.066813][ T1434] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 70.074851][ T1434] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 70.083588][ T1434] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 70.092328][ T1434] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 70.101267][ T1434] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 70.242812][ T4247] syz-executor (4247) used greatest stack depth: 20448 bytes left 2025/11/09 17:55:13 executed programs: 0 [ 70.961478][ T4300] chnl_net:caif_netlink_parms(): no params data found [ 71.027832][ T4300] bridge0: port 1(bridge_slave_0) entered blocking state [ 71.035000][ T4300] bridge0: port 1(bridge_slave_0) entered disabled state [ 71.044936][ T4300] device bridge_slave_0 entered promiscuous mode [ 71.055262][ T4300] bridge0: port 2(bridge_slave_1) entered blocking state [ 71.062684][ T4300] bridge0: port 2(bridge_slave_1) entered disabled state [ 71.071222][ T4300] device bridge_slave_1 entered promiscuous mode [ 71.099213][ T4300] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 71.110998][ T4300] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 71.147421][ T4300] team0: Port device team_slave_0 added [ 71.158253][ T4300] team0: Port device team_slave_1 added [ 71.186712][ T4300] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 71.196714][ T4300] 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. [ 71.225771][ T4300] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 71.244136][ T4300] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 71.251350][ T4300] 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. [ 71.281654][ T1420] ieee802154 phy0 wpan0: encryption failed: -22 [ 71.288407][ T1420] ieee802154 phy1 wpan1: encryption failed: -22 [ 71.297265][ T4300] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 71.338626][ T4300] device hsr_slave_0 entered promiscuous mode [ 71.345476][ T4300] device hsr_slave_1 entered promiscuous mode [ 71.352528][ T4300] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 71.361099][ T4300] Cannot create hsr debugfs directory [ 71.462435][ T4300] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 72.878804][ T4309] Bluetooth: hci0: command 0x0409 tx timeout [ 74.585219][ T4300] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 74.958665][ T4226] Bluetooth: hci0: command 0x041b tx timeout [ 75.074425][ T4300] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 75.115865][ T4300] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 75.214368][ T4300] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 75.223604][ T4300] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 75.241371][ T4300] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 75.250667][ T4300] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 75.311320][ T4300] 8021q: adding VLAN 0 to HW filter on device bond0 [ 75.331060][ T1434] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 75.340858][ T1434] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 75.351809][ T4300] 8021q: adding VLAN 0 to HW filter on device team0 [ 75.371994][ T1434] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 75.380798][ T1434] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 75.390156][ T1434] bridge0: port 1(bridge_slave_0) entered blocking state [ 75.397518][ T1434] bridge0: port 1(bridge_slave_0) entered forwarding state [ 75.406536][ T1434] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 75.426500][ T1434] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 75.435602][ T1434] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 75.444751][ T1434] bridge0: port 2(bridge_slave_1) entered blocking state [ 75.451895][ T1434] bridge0: port 2(bridge_slave_1) entered forwarding state [ 75.468897][ T1434] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 75.479790][ T1434] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 75.488607][ T1434] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 75.497409][ T1434] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 75.506835][ T1434] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 75.528238][ T4287] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 75.537216][ T4287] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 75.549359][ T4287] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 75.558187][ T4287] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 75.577209][ T4287] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 75.586654][ T4287] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 75.596790][ T4300] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 75.612058][ T144] device hsr_slave_0 left promiscuous mode [ 75.619558][ T144] device hsr_slave_1 left promiscuous mode [ 75.625988][ T144] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 75.633631][ T144] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 75.642705][ T144] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 75.650291][ T144] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 75.658144][ T144] device bridge_slave_1 left promiscuous mode [ 75.665076][ T144] bridge0: port 2(bridge_slave_1) entered disabled state [ 75.680618][ T144] device bridge_slave_0 left promiscuous mode [ 75.686813][ T144] bridge0: port 1(bridge_slave_0) entered disabled state [ 75.704518][ T144] device veth1_macvtap left promiscuous mode [ 75.711255][ T144] device veth0_macvtap left promiscuous mode [ 75.717327][ T144] device veth1_vlan left promiscuous mode [ 75.723395][ T144] device veth0_vlan left promiscuous mode [ 75.885755][ T144] team0 (unregistering): Port device team_slave_1 removed [ 75.899789][ T144] team0 (unregistering): Port device team_slave_0 removed [ 75.912550][ T144] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 75.933207][ T144] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 75.992351][ T144] bond0 (unregistering): Released all slaves [ 76.139913][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 76.147406][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 76.162960][ T4300] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 76.188855][ T4287] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 76.197579][ T4287] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 76.216278][ T1434] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 76.224928][ T1434] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 76.238002][ T4300] device veth0_vlan entered promiscuous mode [ 76.245789][ T1434] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 76.256032][ T1434] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 76.272529][ T4300] device veth1_vlan entered promiscuous mode [ 76.291838][ T4287] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 76.300368][ T4287] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 76.309439][ T4287] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 76.319397][ T4287] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 76.330948][ T4300] device veth0_macvtap entered promiscuous mode [ 76.342072][ T4300] device veth1_macvtap entered promiscuous mode [ 76.351285][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 76.359679][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 76.375293][ T4300] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 76.383704][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 76.392611][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 76.405761][ T4300] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 76.422742][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 76.431835][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 76.448807][ T4300] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 76.457556][ T4300] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 76.466458][ T4300] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 76.475271][ T4300] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 76.529220][ T9] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 76.537215][ T9] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 76.555545][ T4287] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 76.558784][ T1434] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 76.575840][ T4287] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 76.590968][ T1434] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 76.708619][ T4323] [ 76.710997][ T4323] ====================================================== [ 76.718041][ T4323] WARNING: possible circular locking dependency detected [ 76.725084][ T4323] syzkaller #0 Not tainted [ 76.729505][ T4323] ------------------------------------------------------ [ 76.736612][ T4323] syz.0.17/4323 is trying to acquire lock: [ 76.742427][ T4323] ffff888023bc8c28 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}, at: __flush_work+0xc1/0x1b0 [ 76.753511][ T4323] [ 76.753511][ T4323] but task is already holding lock: [ 76.760873][ T4323] ffffffff8d4c0f28 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x19e/0x560 [ 76.770559][ T4323] [ 76.770559][ T4323] which lock already depends on the new lock. [ 76.770559][ T4323] [ 76.780971][ T4323] [ 76.780971][ T4323] the existing dependency chain (in reverse order) is: [ 76.789995][ T4323] [ 76.789995][ T4323] -> #4 (rfkill_global_mutex){+.+.}-{3:3}: [ 76.798006][ T4323] __mutex_lock_common+0x1eb/0x2390 [ 76.803779][ T4323] mutex_lock_nested+0x17/0x20 [ 76.809076][ T4323] rfkill_register+0x33/0x8a0 [ 76.814289][ T4323] hci_register_dev+0x452/0x970 [ 76.819674][ T4323] vhci_create_device+0x32c/0x5c0 [ 76.825234][ T4323] vhci_write+0x391/0x450 [ 76.830094][ T4323] vfs_write+0x712/0xd00 [ 76.834872][ T4323] ksys_write+0x14d/0x250 [ 76.839738][ T4323] do_syscall_64+0x4c/0xa0 [ 76.844694][ T4323] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 76.851124][ T4323] [ 76.851124][ T4323] -> #3 (&data->open_mutex){+.+.}-{3:3}: [ 76.858963][ T4323] __mutex_lock_common+0x1eb/0x2390 [ 76.864704][ T4323] mutex_lock_nested+0x17/0x20 [ 76.870004][ T4323] vhci_send_frame+0x88/0x100 [ 76.875232][ T4323] hci_send_frame+0x1a9/0x2e0 [ 76.880453][ T4323] hci_tx_work+0x9f9/0x1710 [ 76.885498][ T4323] process_one_work+0x863/0x1000 [ 76.890969][ T4323] worker_thread+0xaa8/0x12a0 [ 76.896181][ T4323] kthread+0x436/0x520 [ 76.900780][ T4323] ret_from_fork+0x1f/0x30 [ 76.905727][ T4323] [ 76.905727][ T4323] -> #2 ((work_completion)(&hdev->tx_work)){+.+.}-{0:0}: [ 76.914947][ T4323] __flush_work+0xdd/0x1b0 [ 76.919893][ T4323] hci_dev_do_close+0x1e7/0x1030 [ 76.925366][ T4323] hci_unregister_dev+0x2d7/0x580 [ 76.930925][ T4323] vhci_release+0x73/0xc0 [ 76.935782][ T4323] __fput+0x234/0x930 [ 76.940298][ T4323] task_work_run+0x125/0x1a0 [ 76.945424][ T4323] do_exit+0x61e/0x20a0 [ 76.950110][ T4323] do_group_exit+0x12e/0x300 [ 76.955234][ T4323] get_signal+0x6ca/0x12c0 [ 76.960178][ T4323] arch_do_signal_or_restart+0xc1/0x1300 [ 76.966342][ T4323] exit_to_user_mode_loop+0x9e/0x130 [ 76.972171][ T4323] exit_to_user_mode_prepare+0xee/0x180 [ 76.978249][ T4323] syscall_exit_to_user_mode+0x16/0x40 [ 76.984241][ T4323] do_syscall_64+0x58/0xa0 [ 76.989185][ T4323] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 76.995611][ T4323] [ 76.995611][ T4323] -> #1 (&hdev->req_lock){+.+.}-{3:3}: [ 77.003265][ T4323] __mutex_lock_common+0x1eb/0x2390 [ 77.008995][ T4323] mutex_lock_nested+0x17/0x20 [ 77.014291][ T4323] bg_scan_update+0x44/0x3b0 [ 77.019415][ T4323] process_one_work+0x863/0x1000 [ 77.024883][ T4323] worker_thread+0xaa8/0x12a0 [ 77.030092][ T4323] kthread+0x436/0x520 [ 77.034694][ T4323] ret_from_fork+0x1f/0x30 [ 77.039650][ T4323] [ 77.039650][ T4323] -> #0 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}: [ 77.049500][ T4323] __lock_acquire+0x2c33/0x7c60 [ 77.054899][ T4323] lock_acquire+0x197/0x3f0 [ 77.059949][ T4323] __flush_work+0xdd/0x1b0 [ 77.064908][ T4323] __cancel_work_timer+0x3ac/0x520 [ 77.070560][ T4323] hci_request_cancel_all+0xcc/0x300 [ 77.076385][ T4323] hci_dev_do_close+0x4e/0x1030 [ 77.081772][ T4323] hci_rfkill_set_block+0x10a/0x190 [ 77.087510][ T4323] rfkill_set_block+0x1c6/0x420 [ 77.092895][ T4323] rfkill_fop_write+0x458/0x560 [ 77.098273][ T4323] vfs_write+0x300/0xd00 [ 77.103034][ T4323] ksys_write+0x14d/0x250 [ 77.107884][ T4323] do_syscall_64+0x4c/0xa0 [ 77.112821][ T4323] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 77.119232][ T4323] [ 77.119232][ T4323] other info that might help us debug this: [ 77.119232][ T4323] [ 77.129460][ T4323] Chain exists of: [ 77.129460][ T4323] (work_completion)(&hdev->bg_scan_update) --> &data->open_mutex --> rfkill_global_mutex [ 77.129460][ T4323] [ 77.145198][ T4323] Possible unsafe locking scenario: [ 77.145198][ T4323] [ 77.152653][ T4323] CPU0 CPU1 [ 77.158022][ T4323] ---- ---- [ 77.163388][ T4323] lock(rfkill_global_mutex); [ 77.168158][ T4323] lock(&data->open_mutex); [ 77.175271][ T4323] lock(rfkill_global_mutex); [ 77.182557][ T4323] lock((work_completion)(&hdev->bg_scan_update)); [ 77.189147][ T4323] [ 77.189147][ T4323] *** DEADLOCK *** [ 77.189147][ T4323] [ 77.197286][ T4323] 1 lock held by syz.0.17/4323: [ 77.202140][ T4323] #0: ffffffff8d4c0f28 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x19e/0x560 [ 77.212239][ T4323] [ 77.212239][ T4323] stack backtrace: [ 77.218234][ T4323] CPU: 1 PID: 4323 Comm: syz.0.17 Not tainted syzkaller #0 [ 77.225678][ T4323] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025 [ 77.235767][ T4323] Call Trace: [ 77.239052][ T4323] [ 77.241985][ T4323] dump_stack_lvl+0x168/0x230 [ 77.246674][ T4323] ? load_image+0x3b0/0x3b0 [ 77.251196][ T4323] ? show_regs_print_info+0x20/0x20 [ 77.256404][ T4323] ? print_circular_bug+0x12b/0x1a0 [ 77.261607][ T4323] check_noncircular+0x274/0x310 [ 77.266551][ T4323] ? add_chain_block+0x940/0x940 [ 77.271494][ T4323] ? lockdep_lock+0xdc/0x1e0 [ 77.276095][ T4323] ? __lock_acquire+0x12d9/0x7c60 [ 77.281124][ T4323] ? lockdep_lock+0x1e0/0x1e0 [ 77.285801][ T4323] ? mark_lock+0x94/0x320 [ 77.290150][ T4323] __lock_acquire+0x2c33/0x7c60 [ 77.295030][ T4323] ? verify_lock_unused+0x140/0x140 [ 77.300245][ T4323] ? verify_lock_unused+0x140/0x140 [ 77.305454][ T4323] lock_acquire+0x197/0x3f0 [ 77.309958][ T4323] ? __flush_work+0xc1/0x1b0 [ 77.314553][ T4323] ? __lock_acquire+0x7c60/0x7c60 [ 77.319599][ T4323] ? read_lock_is_recursive+0x10/0x10 [ 77.324987][ T4323] ? start_flush_work+0x776/0x820 [ 77.330010][ T4323] ? _raw_spin_unlock_irqrestore+0xaa/0x100 [ 77.335906][ T4323] ? _raw_spin_unlock+0x40/0x40 [ 77.340765][ T4323] __flush_work+0xdd/0x1b0 [ 77.345188][ T4323] ? __flush_work+0xc1/0x1b0 [ 77.349797][ T4323] ? flush_work+0x20/0x20 [ 77.354131][ T4323] ? try_to_grab_pending+0xf3/0x7e0 [ 77.359361][ T4323] ? lockdep_hardirqs_off+0x70/0x100 [ 77.364653][ T4323] ? mark_lock+0x94/0x320 [ 77.368988][ T4323] ? lockdep_hardirqs_on_prepare+0x3fc/0x760 [ 77.374974][ T4323] ? lock_chain_count+0x20/0x20 [ 77.379829][ T4323] ? mark_lock+0x94/0x320 [ 77.384185][ T4323] ? __cancel_work_timer+0x331/0x520 [ 77.389470][ T4323] __cancel_work_timer+0x3ac/0x520 [ 77.394584][ T4323] ? cancel_work_sync+0x20/0x20 [ 77.399574][ T4323] ? __cancel_work+0x1f4/0x2d0 [ 77.404358][ T4323] ? lockdep_hardirqs_on+0x94/0x140 [ 77.409758][ T4323] ? __cancel_work+0x26f/0x2d0 [ 77.414536][ T4323] ? cancel_work+0x20/0x20 [ 77.418957][ T4323] ? lock_chain_count+0x20/0x20 [ 77.423820][ T4323] hci_request_cancel_all+0xcc/0x300 [ 77.429122][ T4323] hci_dev_do_close+0x4e/0x1030 [ 77.433987][ T4323] ? _raw_spin_unlock_irqrestore+0xaa/0x100 [ 77.439905][ T4323] ? _raw_spin_unlock+0x40/0x40 [ 77.444776][ T4323] hci_rfkill_set_block+0x10a/0x190 [ 77.449979][ T4323] ? rcu_lock_release+0x20/0x20 [ 77.454831][ T4323] rfkill_set_block+0x1c6/0x420 [ 77.459688][ T4323] rfkill_fop_write+0x458/0x560 [ 77.464545][ T4323] ? verify_lock_unused+0x140/0x140 [ 77.469745][ T4323] ? rfkill_fop_read+0x4b0/0x4b0 [ 77.474687][ T4323] ? common_file_perm+0x130/0x1c0 [ 77.479717][ T4323] ? fsnotify_perm+0x5d/0x560 [ 77.484419][ T4323] ? security_file_permission+0x75/0xa0 [ 77.489967][ T4323] ? rfkill_fop_read+0x4b0/0x4b0 [ 77.494905][ T4323] vfs_write+0x300/0xd00 [ 77.499146][ T4323] ? file_end_write+0x250/0x250 [ 77.504001][ T4323] ? __context_tracking_exit+0x4c/0x80 [ 77.509462][ T4323] ? __lock_acquire+0x7c60/0x7c60 [ 77.514488][ T4323] ? __fdget_pos+0x1e2/0x370 [ 77.519075][ T4323] ksys_write+0x14d/0x250 [ 77.523405][ T4323] ? __ia32_sys_read+0x80/0x80 [ 77.528167][ T4323] ? lockdep_hardirqs_on+0x94/0x140 [ 77.533376][ T4323] do_syscall_64+0x4c/0xa0 [ 77.537812][ T4323] ? clear_bhb_loop+0x30/0x80 [ 77.542490][ T4323] ? clear_bhb_loop+0x30/0x80 [ 77.547183][ T4323] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 77.553193][ T4323] RIP: 0033:0x7f29b84c16c9 [ 77.557608][ T4323] 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 [ 77.577234][ T4323] RSP: 002b:00007ffd4133a9e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 77.585661][ T4323] RAX: ffffffffffffffda RBX: 00007f29b8717fa0 RCX: 00007f29b84c16c9 [ 77.593637][ T4323] RDX: 0000000000000008 RSI: 0000200000000040 RDI: 0000000000000003 [ 77.601612][ T4323] RBP: 00007f29b8543f91 R08: 0000000000000000 R09: 0000000000000000 [ 77.609585][ T4323] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 77.617552][ T4323] R13: 00007f29b8717fa0 R14: 00007f29b8717fa0 R15: 0000000000000003 [ 77.625535][ T4323] SYZFAIL: failed to recv rpc fd=3 want=4 recv=0 n=0