Warning: Permanently added '10.128.1.42' (ED25519) to the list of known hosts. 2026/05/30 17:26:53 parsed 1 programs [ 62.336196][ T4202] cgroup: Unknown subsys name 'net' [ 62.468954][ T4202] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size = 127995904 bytes [ 64.026011][ T4202] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k FS [ 66.418769][ T4234] chnl_net:caif_netlink_parms(): no params data found [ 66.488497][ T4234] bridge0: port 1(bridge_slave_0) entered blocking state [ 66.497952][ T4234] bridge0: port 1(bridge_slave_0) entered disabled state [ 66.507470][ T4234] device bridge_slave_0 entered promiscuous mode [ 66.519039][ T4234] bridge0: port 2(bridge_slave_1) entered blocking state [ 66.527107][ T4234] bridge0: port 2(bridge_slave_1) entered disabled state [ 66.536778][ T4234] device bridge_slave_1 entered promiscuous mode [ 66.563493][ T4234] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 66.575360][ T4234] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 66.603886][ T4234] team0: Port device team_slave_0 added [ 66.611943][ T4234] team0: Port device team_slave_1 added [ 66.635528][ T4234] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 66.642560][ T4234] 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. [ 66.669147][ T4234] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 66.688867][ T4234] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 66.696193][ T4234] 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. [ 66.725746][ T4234] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 66.769247][ T4234] device hsr_slave_0 entered promiscuous mode [ 66.776490][ T4234] device hsr_slave_1 entered promiscuous mode [ 66.934975][ T4234] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 66.951499][ T4234] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 66.962475][ T4234] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 66.974832][ T4234] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 67.010218][ T4234] bridge0: port 2(bridge_slave_1) entered blocking state [ 67.017529][ T4234] bridge0: port 2(bridge_slave_1) entered forwarding state [ 67.025625][ T4234] bridge0: port 1(bridge_slave_0) entered blocking state [ 67.032736][ T4234] bridge0: port 1(bridge_slave_0) entered forwarding state [ 67.101615][ T4234] 8021q: adding VLAN 0 to HW filter on device bond0 [ 67.122390][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 67.135647][ T144] bridge0: port 1(bridge_slave_0) entered disabled state [ 67.144941][ T144] bridge0: port 2(bridge_slave_1) entered disabled state [ 67.161451][ T4234] 8021q: adding VLAN 0 to HW filter on device team0 [ 67.174891][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 67.184809][ T144] bridge0: port 1(bridge_slave_0) entered blocking state [ 67.191891][ T144] bridge0: port 1(bridge_slave_0) entered forwarding state [ 67.213824][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 67.224004][ T154] bridge0: port 2(bridge_slave_1) entered blocking state [ 67.231090][ T154] bridge0: port 2(bridge_slave_1) entered forwarding state [ 67.247461][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 67.259384][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 67.273146][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 67.288328][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 67.302543][ T1461] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 67.311589][ T1461] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 67.324074][ T4234] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 67.452738][ T1461] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 67.461047][ T1461] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 67.477110][ T4234] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 67.509456][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 67.544646][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 67.579346][ T4234] device veth0_vlan entered promiscuous mode [ 67.595422][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 67.604299][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 67.618676][ T4234] device veth1_vlan entered promiscuous mode [ 67.633607][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 67.641575][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 67.650602][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 67.670647][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 67.680191][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 67.689215][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 67.700475][ T4234] device veth0_macvtap entered promiscuous mode [ 67.710184][ T4234] device veth1_macvtap entered promiscuous mode [ 67.725009][ T4234] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 67.733947][ T1461] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 67.742118][ T1461] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 67.750268][ T1461] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 67.760678][ T1461] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 67.772604][ T4234] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 67.794686][ T1461] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 67.803700][ T1461] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 67.815560][ T4234] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 67.824616][ T4234] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 67.833518][ T4234] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 67.842273][ T4234] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 67.948876][ T4234] syz-executor (4234) used greatest stack depth: 20752 bytes left [ 68.797075][ T1461] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 68.817025][ T1461] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 68.830713][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 68.852534][ T154] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 68.860692][ T154] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 68.869965][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2026/05/30 17:27:02 executed programs: 0 [ 70.128552][ T1173] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 70.269408][ T4298] chnl_net:caif_netlink_parms(): no params data found [ 70.307719][ T4298] bridge0: port 1(bridge_slave_0) entered blocking state [ 70.315110][ T4298] bridge0: port 1(bridge_slave_0) entered disabled state [ 70.322758][ T4298] device bridge_slave_0 entered promiscuous mode [ 70.331358][ T4298] bridge0: port 2(bridge_slave_1) entered blocking state [ 70.338622][ T4298] bridge0: port 2(bridge_slave_1) entered disabled state [ 70.346944][ T4298] device bridge_slave_1 entered promiscuous mode [ 70.367015][ T4298] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 70.378040][ T4298] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 70.399240][ T4298] team0: Port device team_slave_0 added [ 70.407371][ T4298] team0: Port device team_slave_1 added [ 70.423167][ T4298] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 70.430173][ T4298] 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. [ 70.456241][ T4298] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 70.468113][ T4298] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 70.476351][ T4298] 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. [ 70.503442][ T4298] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 70.533413][ T4298] device hsr_slave_0 entered promiscuous mode [ 70.540991][ T4298] device hsr_slave_1 entered promiscuous mode [ 70.548264][ T4298] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 70.556325][ T4298] Cannot create hsr debugfs directory [ 71.436597][ T1421] ieee802154 phy0 wpan0: encryption failed: -22 [ 71.443188][ T1421] ieee802154 phy1 wpan1: encryption failed: -22 [ 72.244166][ T4244] Bluetooth: hci0: command 0x0409 tx timeout [ 72.511347][ T1173] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 72.569767][ T1173] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 72.642517][ T1173] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 73.473935][ T4298] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 73.484277][ T4298] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 73.495617][ T4298] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 73.506801][ T4298] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 73.571991][ T4298] 8021q: adding VLAN 0 to HW filter on device bond0 [ 73.607081][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 73.615521][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 73.627113][ T4298] 8021q: adding VLAN 0 to HW filter on device team0 [ 73.637350][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 73.646321][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 73.655856][ T154] bridge0: port 1(bridge_slave_0) entered blocking state [ 73.663141][ T154] bridge0: port 1(bridge_slave_0) entered forwarding state [ 73.671321][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 73.701023][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 73.711124][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 73.721221][ T144] bridge0: port 2(bridge_slave_1) entered blocking state [ 73.728766][ T144] bridge0: port 2(bridge_slave_1) entered forwarding state [ 73.739888][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 73.755662][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 73.771898][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 73.781582][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 73.805164][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 73.813583][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 73.822547][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 73.831998][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 73.842136][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 73.850781][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 73.859477][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 73.869994][ T4298] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 74.012334][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 74.020145][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 74.031920][ T4298] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 74.068576][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 74.077867][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 74.112104][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 74.121156][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 74.131956][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 74.140827][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 74.149639][ T4298] device veth0_vlan entered promiscuous mode [ 74.183204][ T4298] device veth1_vlan entered promiscuous mode [ 74.206862][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 74.215827][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 74.224540][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 74.234668][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 74.247645][ T4298] device veth0_macvtap entered promiscuous mode [ 74.265389][ T4298] device veth1_macvtap entered promiscuous mode [ 74.297868][ T4298] batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3e) already exists on: batadv_slave_0 [ 74.310192][ T4298] batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems! [ 74.321865][ T4298] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 74.323167][ T4311] Bluetooth: hci0: command 0x041b tx timeout [ 74.331841][ T4298] batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3f) already exists on: batadv_slave_1 [ 74.346734][ T4298] batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems! [ 74.359916][ T4298] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 74.370870][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 74.379189][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 74.387615][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 74.397233][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 74.406340][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 74.415537][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 74.433290][ T4298] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 74.442849][ T4298] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 74.451832][ T4298] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 74.461818][ T4298] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 74.478303][ T1173] device hsr_slave_0 left promiscuous mode [ 74.485399][ T1173] device hsr_slave_1 left promiscuous mode [ 74.492126][ T1173] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 74.500997][ T1173] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 74.511536][ T1173] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 74.519938][ T1173] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 74.528149][ T1173] device bridge_slave_1 left promiscuous mode [ 74.535575][ T1173] bridge0: port 2(bridge_slave_1) entered disabled state [ 74.549015][ T1173] device bridge_slave_0 left promiscuous mode [ 74.556027][ T1173] bridge0: port 1(bridge_slave_0) entered disabled state [ 74.572033][ T1173] device veth1_macvtap left promiscuous mode [ 74.578338][ T1173] device veth0_macvtap left promiscuous mode [ 74.584593][ T1173] device veth1_vlan left promiscuous mode [ 74.590721][ T1173] device veth0_vlan left promiscuous mode [ 74.754645][ T1173] team0 (unregistering): Port device team_slave_1 removed [ 74.767366][ T1173] team0 (unregistering): Port device team_slave_0 removed [ 74.779824][ T1173] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 74.796787][ T1173] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 74.859130][ T1173] bond0 (unregistering): Released all slaves [ 74.969704][ T1461] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 74.978607][ T1461] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 74.999626][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 75.017111][ T144] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 75.025831][ T144] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 75.035175][ T1461] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 75.141848][ T4350] [ 75.144263][ T4350] ====================================================== [ 75.151396][ T4350] WARNING: possible circular locking dependency detected [ 75.158424][ T4350] syzkaller #0 Not tainted [ 75.162853][ T4350] ------------------------------------------------------ [ 75.169864][ T4350] syz.0.17/4350 is trying to acquire lock: [ 75.175692][ T4350] ffff888025bf0c28 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}, at: __flush_work+0xfa/0x210 [ 75.186828][ T4350] [ 75.186828][ T4350] but task is already holding lock: [ 75.194219][ T4350] ffffffff8d6c65a8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x18b/0x560 [ 75.203915][ T4350] [ 75.203915][ T4350] which lock already depends on the new lock. [ 75.203915][ T4350] [ 75.214333][ T4350] [ 75.214333][ T4350] the existing dependency chain (in reverse order) is: [ 75.223382][ T4350] [ 75.223382][ T4350] -> #4 (rfkill_global_mutex){+.+.}-{3:3}: [ 75.231411][ T4350] __mutex_lock_common+0x1e3/0x2400 [ 75.237516][ T4350] mutex_lock_nested+0x17/0x20 [ 75.243882][ T4350] rfkill_register+0x33/0x980 [ 75.249373][ T4350] hci_register_dev+0x452/0x970 [ 75.254773][ T4350] vhci_create_device+0x32c/0x5c0 [ 75.260519][ T4350] vhci_write+0x391/0x450 [ 75.265510][ T4350] vfs_write+0x745/0xd60 [ 75.270696][ T4350] ksys_write+0x152/0x260 [ 75.275591][ T4350] do_syscall_64+0x4c/0xa0 [ 75.280563][ T4350] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 75.287140][ T4350] [ 75.287140][ T4350] -> #3 (&data->open_mutex){+.+.}-{3:3}: [ 75.295121][ T4350] __mutex_lock_common+0x1e3/0x2400 [ 75.300879][ T4350] mutex_lock_nested+0x17/0x20 [ 75.306203][ T4350] vhci_send_frame+0x88/0x100 [ 75.311523][ T4350] hci_send_frame+0x1a9/0x2e0 [ 75.316754][ T4350] hci_tx_work+0x9f9/0x1710 [ 75.321812][ T4350] process_one_work+0x85f/0x1010 [ 75.327303][ T4350] worker_thread+0xaa6/0x1290 [ 75.332530][ T4350] kthread+0x436/0x520 [ 75.337597][ T4350] ret_from_fork+0x1f/0x30 [ 75.342572][ T4350] [ 75.342572][ T4350] -> #2 ((work_completion)(&hdev->tx_work)){+.+.}-{0:0}: [ 75.351814][ T4350] __flush_work+0x116/0x210 [ 75.356969][ T4350] hci_dev_do_close+0x1e7/0x1030 [ 75.362580][ T4350] hci_unregister_dev+0x2d7/0x580 [ 75.368164][ T4350] vhci_release+0x73/0xc0 [ 75.373042][ T4350] __fput+0x234/0x930 [ 75.377573][ T4350] task_work_run+0x125/0x1a0 [ 75.382805][ T4350] do_exit+0x626/0x20c0 [ 75.387510][ T4350] do_group_exit+0x12e/0x300 [ 75.393184][ T4350] get_signal+0x6d6/0x12d0 [ 75.398151][ T4350] arch_do_signal_or_restart+0xe7/0x12c0 [ 75.404339][ T4350] exit_to_user_mode_loop+0x9e/0x130 [ 75.410169][ T4350] exit_to_user_mode_prepare+0xee/0x180 [ 75.416697][ T4350] syscall_exit_to_user_mode+0x16/0x40 [ 75.422707][ T4350] do_syscall_64+0x58/0xa0 [ 75.427676][ T4350] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 75.434119][ T4350] [ 75.434119][ T4350] -> #1 (&hdev->req_lock){+.+.}-{3:3}: [ 75.441979][ T4350] __mutex_lock_common+0x1e3/0x2400 [ 75.447905][ T4350] mutex_lock_nested+0x17/0x20 [ 75.453739][ T4350] bg_scan_update+0x44/0x3b0 [ 75.459233][ T4350] process_one_work+0x85f/0x1010 [ 75.464894][ T4350] worker_thread+0xaa6/0x1290 [ 75.470120][ T4350] kthread+0x436/0x520 [ 75.474743][ T4350] ret_from_fork+0x1f/0x30 [ 75.479707][ T4350] [ 75.479707][ T4350] -> #0 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}: [ 75.489726][ T4350] __lock_acquire+0x2c42/0x7d10 [ 75.495147][ T4350] lock_acquire+0x19e/0x400 [ 75.500208][ T4350] __flush_work+0x116/0x210 [ 75.505355][ T4350] __cancel_work_timer+0x3f4/0x560 [ 75.511117][ T4350] hci_request_cancel_all+0xcc/0x300 [ 75.517046][ T4350] hci_dev_do_close+0x4e/0x1030 [ 75.522468][ T4350] hci_rfkill_set_block+0x10a/0x190 [ 75.528262][ T4350] rfkill_set_block+0x1c9/0x3d0 [ 75.533939][ T4350] rfkill_fop_write+0x452/0x560 [ 75.539345][ T4350] vfs_write+0x30b/0xd60 [ 75.544184][ T4350] ksys_write+0x152/0x260 [ 75.549064][ T4350] do_syscall_64+0x4c/0xa0 [ 75.554032][ T4350] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 75.560482][ T4350] [ 75.560482][ T4350] other info that might help us debug this: [ 75.560482][ T4350] [ 75.570901][ T4350] Chain exists of: [ 75.570901][ T4350] (work_completion)(&hdev->bg_scan_update) --> &data->open_mutex --> rfkill_global_mutex [ 75.570901][ T4350] [ 75.587205][ T4350] Possible unsafe locking scenario: [ 75.587205][ T4350] [ 75.594763][ T4350] CPU0 CPU1 [ 75.600156][ T4350] ---- ---- [ 75.605632][ T4350] lock(rfkill_global_mutex); [ 75.610427][ T4350] lock(&data->open_mutex); [ 75.617566][ T4350] lock(rfkill_global_mutex); [ 75.624876][ T4350] lock((work_completion)(&hdev->bg_scan_update)); [ 75.631490][ T4350] [ 75.631490][ T4350] *** DEADLOCK *** [ 75.631490][ T4350] [ 75.639657][ T4350] 1 lock held by syz.0.17/4350: [ 75.644534][ T4350] #0: ffffffff8d6c65a8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x18b/0x560 [ 75.654669][ T4350] [ 75.654669][ T4350] stack backtrace: [ 75.660576][ T4350] CPU: 1 PID: 4350 Comm: syz.0.17 Not tainted syzkaller #0 [ 75.667808][ T4350] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 75.677894][ T4350] Call Trace: [ 75.681235][ T4350] [ 75.684240][ T4350] dump_stack_lvl+0x188/0x250 [ 75.688945][ T4350] ? load_image+0x400/0x400 [ 75.693486][ T4350] ? show_regs_print_info+0x20/0x20 [ 75.699070][ T4350] ? print_circular_bug+0x12b/0x1a0 [ 75.704311][ T4350] check_noncircular+0x296/0x330 [ 75.709290][ T4350] ? look_up_lock_class+0x71/0x110 [ 75.714428][ T4350] ? add_chain_block+0x940/0x940 [ 75.719406][ T4350] ? lockdep_lock+0xf1/0x1f0 [ 75.724025][ T4350] ? __lock_acquire+0x12e8/0x7d10 [ 75.729109][ T4350] ? mark_lock+0x94/0x320 [ 75.733554][ T4350] ? _find_first_zero_bit+0xce/0xf0 [ 75.738785][ T4350] __lock_acquire+0x2c42/0x7d10 [ 75.743675][ T4350] ? verify_lock_unused+0x140/0x140 [ 75.748902][ T4350] ? verify_lock_unused+0x140/0x140 [ 75.754152][ T4350] ? mark_lock+0x94/0x320 [ 75.758696][ T4350] lock_acquire+0x19e/0x400 [ 75.763241][ T4350] ? __flush_work+0xfa/0x210 [ 75.767960][ T4350] ? __lock_acquire+0x7d10/0x7d10 [ 75.773050][ T4350] ? read_lock_is_recursive+0x10/0x10 [ 75.778557][ T4350] ? start_flush_work+0x776/0x820 [ 75.783704][ T4350] __flush_work+0x116/0x210 [ 75.788242][ T4350] ? __flush_work+0xfa/0x210 [ 75.792987][ T4350] ? flush_work+0x20/0x20 [ 75.797343][ T4350] ? try_to_grab_pending+0xfa/0x7f0 [ 75.802573][ T4350] ? mark_lock+0x94/0x320 [ 75.807021][ T4350] ? lockdep_hardirqs_on_prepare+0x409/0x770 [ 75.813037][ T4350] ? lock_chain_count+0x20/0x20 [ 75.818006][ T4350] ? mark_lock+0x94/0x320 [ 75.822371][ T4350] ? __cancel_work_timer+0x36a/0x560 [ 75.827691][ T4350] __cancel_work_timer+0x3f4/0x560 [ 75.832878][ T4350] ? cancel_work_sync+0x20/0x20 [ 75.837754][ T4350] ? __cancel_work+0x1f9/0x2e0 [ 75.842545][ T4350] ? lockdep_hardirqs_on+0x94/0x140 [ 75.848189][ T4350] ? __cancel_work+0x27b/0x2e0 [ 75.852988][ T4350] ? cancel_work+0x20/0x20 [ 75.857714][ T4350] ? lock_chain_count+0x20/0x20 [ 75.863236][ T4350] hci_request_cancel_all+0xcc/0x300 [ 75.869871][ T4350] hci_dev_do_close+0x4e/0x1030 [ 75.874845][ T4350] ? _raw_spin_unlock_irqrestore+0xc1/0x120 [ 75.881154][ T4350] ? _raw_spin_unlock+0x40/0x40 [ 75.886040][ T4350] hci_rfkill_set_block+0x10a/0x190 [ 75.891273][ T4350] ? rcu_lock_release+0x20/0x20 [ 75.896586][ T4350] rfkill_set_block+0x1c9/0x3d0 [ 75.901469][ T4350] rfkill_fop_write+0x452/0x560 [ 75.906353][ T4350] ? rfkill_fop_read+0x520/0x520 [ 75.911314][ T4350] ? common_file_perm+0xc0/0x1c0 [ 75.916279][ T4350] ? fsnotify_perm+0x5d/0x560 [ 75.920980][ T4350] ? security_file_permission+0x75/0xa0 [ 75.926558][ T4350] ? rfkill_fop_read+0x520/0x520 [ 75.931516][ T4350] vfs_write+0x30b/0xd60 [ 75.935795][ T4350] ? file_end_write+0x250/0x250 [ 75.940672][ T4350] ? __context_tracking_exit+0x4c/0x80 [ 75.946160][ T4350] ? __lock_acquire+0x7d10/0x7d10 [ 75.951213][ T4350] ? __fdget_pos+0x1e2/0x370 [ 75.955831][ T4350] ksys_write+0x152/0x260 [ 75.960193][ T4350] ? __ia32_sys_read+0x80/0x80 [ 75.964977][ T4350] ? lockdep_hardirqs_on+0x94/0x140 [ 75.970203][ T4350] do_syscall_64+0x4c/0xa0 [ 75.974643][ T4350] ? clear_bhb_loop+0x30/0x80 [ 75.979349][ T4350] ? clear_bhb_loop+0x30/0x80 [ 75.984062][ T4350] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 75.990497][ T4350] RIP: 0033:0x7fc7b85efe59 [ 75.995121][ T4350] 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 [ 76.015203][ T4350] RSP: 002b:00007ffd3b32cc88 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 76.023650][ T4350] RAX: ffffffffffffffda RBX: 00007fc7b8868fa0 RCX: 00007fc7b85efe59 [ 76.031654][ T4350] RDX: 0000000000000008 RSI: 00002000000001c0 RDI: 0000000000000003 [ 76.039828][ T4350] RBP: 00007fc7b8685d6f R08: 0000000000000000 R09: 0000000000000000 [ 76.047825][ T4350] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 76.055823][ T4350] R13: 00007fc7b8868fac R14: 00007fc7b8868fa0 R15: 00007fc7b8868fa0 [ 76.063834][ T4350]