Warning: Permanently added '10.128.1.11' (ED25519) to the list of known hosts. 2026/04/26 12:06:29 parsed 1 programs [ 66.644375][ T4190] cgroup: Unknown subsys name 'net' [ 66.787167][ T4190] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size = 127995904 bytes [ 68.273401][ T4190] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k FS [ 70.118111][ T155] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 70.126241][ T155] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 70.139850][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 70.158413][ T154] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 70.166919][ T154] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 70.177662][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 70.416257][ T4220] chnl_net:caif_netlink_parms(): no params data found [ 70.462661][ T4220] bridge0: port 1(bridge_slave_0) entered blocking state [ 70.470472][ T4220] bridge0: port 1(bridge_slave_0) entered disabled state [ 70.480228][ T4220] device bridge_slave_0 entered promiscuous mode [ 70.490734][ T4220] bridge0: port 2(bridge_slave_1) entered blocking state [ 70.498123][ T4220] bridge0: port 2(bridge_slave_1) entered disabled state [ 70.506813][ T4220] device bridge_slave_1 entered promiscuous mode [ 70.532780][ T4220] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 70.545303][ T4220] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 70.573067][ T4220] team0: Port device team_slave_0 added [ 70.582940][ T4220] team0: Port device team_slave_1 added [ 70.610717][ T4220] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 70.618121][ T4220] 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. [ 70.644793][ T4220] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 70.658241][ T4220] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 70.665447][ T4220] 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. [ 70.691911][ T4220] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 70.733518][ T4220] device hsr_slave_0 entered promiscuous mode [ 70.741314][ T4220] device hsr_slave_1 entered promiscuous mode [ 70.883756][ T4220] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 70.896852][ T4220] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 70.907129][ T4220] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 70.918354][ T4220] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 70.951541][ T4220] bridge0: port 2(bridge_slave_1) entered blocking state [ 70.958889][ T4220] bridge0: port 2(bridge_slave_1) entered forwarding state [ 70.967108][ T4220] bridge0: port 1(bridge_slave_0) entered blocking state [ 70.974332][ T4220] bridge0: port 1(bridge_slave_0) entered forwarding state [ 71.044066][ T4220] 8021q: adding VLAN 0 to HW filter on device bond0 [ 71.061995][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 71.084292][ T154] bridge0: port 1(bridge_slave_0) entered disabled state [ 71.095861][ T154] bridge0: port 2(bridge_slave_1) entered disabled state [ 71.110239][ T4220] 8021q: adding VLAN 0 to HW filter on device team0 [ 71.125303][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 71.136002][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 71.144995][ T154] bridge0: port 1(bridge_slave_0) entered blocking state [ 71.152134][ T154] bridge0: port 1(bridge_slave_0) entered forwarding state [ 71.171858][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 71.182889][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 71.192462][ T154] bridge0: port 2(bridge_slave_1) entered blocking state [ 71.199723][ T154] bridge0: port 2(bridge_slave_1) entered forwarding state [ 71.209493][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 71.228374][ T1214] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 71.237862][ T1214] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 71.250903][ T1214] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 71.269058][ T4220] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 71.283522][ T4220] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 71.299084][ T1214] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 71.307312][ T1214] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 71.317553][ T1214] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 71.328584][ T1214] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 71.339111][ T1214] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 71.349116][ T1214] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 71.359293][ T1214] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 71.370458][ T1214] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 71.486902][ T1421] ieee802154 phy0 wpan0: encryption failed: -22 [ 71.494149][ T1421] ieee802154 phy1 wpan1: encryption failed: -22 [ 71.547048][ T1214] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 71.555184][ T1214] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 71.573182][ T4220] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 71.596618][ T1214] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 71.608529][ T1214] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 71.633357][ T1214] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 71.643244][ T1214] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 71.652657][ T1214] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 71.660668][ T1214] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 71.672994][ T4220] device veth0_vlan entered promiscuous mode [ 71.688230][ T4220] device veth1_vlan entered promiscuous mode [ 71.712712][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 71.724200][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 71.734035][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 71.743339][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 71.755677][ T4220] device veth0_macvtap entered promiscuous mode [ 71.767993][ T4220] device veth1_macvtap entered promiscuous mode [ 71.787136][ T4220] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 71.795081][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 71.804605][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 71.814076][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 71.823288][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 71.835728][ T4220] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 71.843753][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 71.853645][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 71.865703][ T4220] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 71.874968][ T4220] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 71.884476][ T4220] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 71.894013][ T4220] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 72.003055][ T4220] syz-executor (4220) used greatest stack depth: 20112 bytes left 2026/04/26 12:06:39 executed programs: 0 [ 74.481718][ T4284] chnl_net:caif_netlink_parms(): no params data found [ 74.534821][ T4284] bridge0: port 1(bridge_slave_0) entered blocking state [ 74.542099][ T4284] bridge0: port 1(bridge_slave_0) entered disabled state [ 74.549905][ T4284] device bridge_slave_0 entered promiscuous mode [ 74.557995][ T4284] bridge0: port 2(bridge_slave_1) entered blocking state [ 74.567078][ T4284] bridge0: port 2(bridge_slave_1) entered disabled state [ 74.575397][ T4284] device bridge_slave_1 entered promiscuous mode [ 74.605661][ T4284] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 74.620834][ T9] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 74.638517][ T4284] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 74.659196][ T4284] team0: Port device team_slave_0 added [ 74.667211][ T4284] team0: Port device team_slave_1 added [ 74.685712][ T4284] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 74.692918][ T4284] 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. [ 74.719304][ T4284] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 74.731304][ T4284] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 74.739047][ T4284] 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. [ 74.766027][ T4284] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 74.793200][ T4284] device hsr_slave_0 entered promiscuous mode [ 74.800433][ T4284] device hsr_slave_1 entered promiscuous mode [ 74.807257][ T4284] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 74.815398][ T4284] Cannot create hsr debugfs directory [ 76.362371][ T4236] Bluetooth: hci0: command 0x0409 tx timeout [ 77.127934][ T9] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 77.206858][ T9] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 77.258227][ T9] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 78.035220][ T4284] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 78.046428][ T4284] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 78.056498][ T4284] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 78.065814][ T4284] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 78.112666][ T4284] 8021q: adding VLAN 0 to HW filter on device bond0 [ 78.126079][ T1214] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 78.134375][ T1214] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 78.145299][ T4284] 8021q: adding VLAN 0 to HW filter on device team0 [ 78.182910][ T1214] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 78.192828][ T1214] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 78.201326][ T1214] bridge0: port 1(bridge_slave_0) entered blocking state [ 78.208438][ T1214] bridge0: port 1(bridge_slave_0) entered forwarding state [ 78.225308][ T1214] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 78.233945][ T1214] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 78.243543][ T1214] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 78.252437][ T1214] bridge0: port 2(bridge_slave_1) entered blocking state [ 78.259532][ T1214] bridge0: port 2(bridge_slave_1) entered forwarding state [ 78.269089][ T1214] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 78.306178][ T1214] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 78.316192][ T1214] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 78.326405][ T1214] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 78.336616][ T1214] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 78.348368][ T1214] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 78.357407][ T1214] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 78.394143][ T1214] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 78.403216][ T1214] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 78.414877][ T1214] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 78.423633][ T1214] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 78.433275][ T4284] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 78.441733][ T13] Bluetooth: hci0: command 0x041b tx timeout [ 78.548836][ T1214] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 78.557458][ T1214] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 78.569104][ T4284] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 78.586249][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 78.595928][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 78.632109][ T1214] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 78.640485][ T1214] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 78.648987][ T1214] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 78.656831][ T1214] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 78.668955][ T4284] device veth0_vlan entered promiscuous mode [ 78.705787][ T4284] device veth1_vlan entered promiscuous mode [ 78.726460][ T1214] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 78.734780][ T1214] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 78.743823][ T1214] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 78.753240][ T1214] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 78.766888][ T4284] device veth0_macvtap entered promiscuous mode [ 78.799904][ T4284] device veth1_macvtap entered promiscuous mode [ 78.816240][ T4284] batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3e) already exists on: batadv_slave_0 [ 78.828040][ T4284] batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems! [ 78.839234][ T4284] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 78.847792][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 78.862434][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 78.871154][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 78.880337][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 78.892726][ T4284] batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3f) already exists on: batadv_slave_1 [ 78.904311][ T4284] batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems! [ 78.915337][ T4284] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 78.926233][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 78.936283][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 78.969499][ T4284] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 78.979190][ T4284] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 78.988241][ T4284] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 78.997349][ T4284] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 79.076748][ T155] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 79.087274][ T155] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 79.095937][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 79.115455][ T9] device hsr_slave_0 left promiscuous mode [ 79.122304][ T9] device hsr_slave_1 left promiscuous mode [ 79.129431][ T9] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 79.137067][ T9] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 79.146121][ T9] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 79.155702][ T9] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 79.165495][ T9] device bridge_slave_1 left promiscuous mode [ 79.172975][ T9] bridge0: port 2(bridge_slave_1) entered disabled state [ 79.186905][ T9] device bridge_slave_0 left promiscuous mode [ 79.193904][ T9] bridge0: port 1(bridge_slave_0) entered disabled state [ 79.210802][ T9] device veth1_macvtap left promiscuous mode [ 79.217241][ T9] device veth0_macvtap left promiscuous mode [ 79.223471][ T9] device veth1_vlan left promiscuous mode [ 79.229581][ T9] device veth0_vlan left promiscuous mode [ 79.399773][ T9] team0 (unregistering): Port device team_slave_1 removed [ 79.415266][ T9] team0 (unregistering): Port device team_slave_0 removed [ 79.430332][ T9] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 79.445176][ T9] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 79.499679][ T9] bond0 (unregistering): Released all slaves [ 79.575599][ T155] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 79.584026][ T155] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 79.593575][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 79.723615][ T4340] [ 79.726010][ T4340] ====================================================== [ 79.733150][ T4340] WARNING: possible circular locking dependency detected [ 79.740194][ T4340] syzkaller #0 Not tainted [ 79.744910][ T4340] ------------------------------------------------------ [ 79.752237][ T4340] syz.0.17/4340 is trying to acquire lock: [ 79.758156][ T4340] ffff888077bdcc28 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}, at: __flush_work+0xfa/0x210 [ 79.769506][ T4340] [ 79.769506][ T4340] but task is already holding lock: [ 79.777154][ T4340] ffffffff8d6c5de8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x18b/0x560 [ 79.786934][ T4340] [ 79.786934][ T4340] which lock already depends on the new lock. [ 79.786934][ T4340] [ 79.797971][ T4340] [ 79.797971][ T4340] the existing dependency chain (in reverse order) is: [ 79.807183][ T4340] [ 79.807183][ T4340] -> #4 (rfkill_global_mutex){+.+.}-{3:3}: [ 79.815298][ T4340] __mutex_lock_common+0x1e3/0x2400 [ 79.821233][ T4340] mutex_lock_nested+0x17/0x20 [ 79.826833][ T4340] rfkill_register+0x33/0x980 [ 79.832081][ T4340] hci_register_dev+0x452/0x970 [ 79.837668][ T4340] vhci_create_device+0x32c/0x5c0 [ 79.843344][ T4340] vhci_write+0x391/0x450 [ 79.848401][ T4340] vfs_write+0x745/0xd60 [ 79.853365][ T4340] ksys_write+0x152/0x260 [ 79.858798][ T4340] do_syscall_64+0x4c/0xa0 [ 79.863947][ T4340] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 79.870569][ T4340] [ 79.870569][ T4340] -> #3 (&data->open_mutex){+.+.}-{3:3}: [ 79.878432][ T4340] __mutex_lock_common+0x1e3/0x2400 [ 79.884371][ T4340] mutex_lock_nested+0x17/0x20 [ 79.890066][ T4340] vhci_send_frame+0x88/0x100 [ 79.895841][ T4340] hci_send_frame+0x1a9/0x2e0 [ 79.901136][ T4340] hci_tx_work+0x9f9/0x1710 [ 79.906287][ T4340] process_one_work+0x85f/0x1010 [ 79.911860][ T4340] worker_thread+0xaa6/0x1290 [ 79.917289][ T4340] kthread+0x436/0x520 [ 79.922036][ T4340] ret_from_fork+0x1f/0x30 [ 79.927000][ T4340] [ 79.927000][ T4340] -> #2 ((work_completion)(&hdev->tx_work)){+.+.}-{0:0}: [ 79.936242][ T4340] __flush_work+0x116/0x210 [ 79.941296][ T4340] hci_dev_do_close+0x1e7/0x1030 [ 79.946905][ T4340] hci_unregister_dev+0x2d7/0x580 [ 79.952568][ T4340] vhci_release+0x73/0xc0 [ 79.957538][ T4340] __fput+0x234/0x930 [ 79.962220][ T4340] task_work_run+0x125/0x1a0 [ 79.967363][ T4340] do_exit+0x626/0x20c0 [ 79.972065][ T4340] do_group_exit+0x12e/0x300 [ 79.977212][ T4340] get_signal+0x6ca/0x12c0 [ 79.982428][ T4340] arch_do_signal_or_restart+0xe7/0x12c0 [ 79.988611][ T4340] exit_to_user_mode_loop+0x9e/0x130 [ 79.995677][ T4340] exit_to_user_mode_prepare+0xee/0x180 [ 80.001867][ T4340] syscall_exit_to_user_mode+0x16/0x40 [ 80.007892][ T4340] do_syscall_64+0x58/0xa0 [ 80.013059][ T4340] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 80.019591][ T4340] [ 80.019591][ T4340] -> #1 (&hdev->req_lock){+.+.}-{3:3}: [ 80.027384][ T4340] __mutex_lock_common+0x1e3/0x2400 [ 80.033144][ T4340] mutex_lock_nested+0x17/0x20 [ 80.038664][ T4340] bg_scan_update+0x44/0x3b0 [ 80.044164][ T4340] process_one_work+0x85f/0x1010 [ 80.049841][ T4340] worker_thread+0xaa6/0x1290 [ 80.055089][ T4340] kthread+0x436/0x520 [ 80.059846][ T4340] ret_from_fork+0x1f/0x30 [ 80.064907][ T4340] [ 80.064907][ T4340] -> #0 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}: [ 80.074906][ T4340] __lock_acquire+0x2c42/0x7d10 [ 80.080493][ T4340] lock_acquire+0x19e/0x400 [ 80.085643][ T4340] __flush_work+0x116/0x210 [ 80.090701][ T4340] __cancel_work_timer+0x3f4/0x560 [ 80.096545][ T4340] hci_request_cancel_all+0xcc/0x300 [ 80.102506][ T4340] hci_dev_do_close+0x4e/0x1030 [ 80.108004][ T4340] hci_rfkill_set_block+0x10a/0x190 [ 80.113755][ T4340] rfkill_set_block+0x1c9/0x3d0 [ 80.119161][ T4340] rfkill_fop_write+0x452/0x560 [ 80.124564][ T4340] vfs_write+0x30b/0xd60 [ 80.129356][ T4340] ksys_write+0x152/0x260 [ 80.134413][ T4340] do_syscall_64+0x4c/0xa0 [ 80.139387][ T4340] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 80.146025][ T4340] [ 80.146025][ T4340] other info that might help us debug this: [ 80.146025][ T4340] [ 80.156573][ T4340] Chain exists of: [ 80.156573][ T4340] (work_completion)(&hdev->bg_scan_update) --> &data->open_mutex --> rfkill_global_mutex [ 80.156573][ T4340] [ 80.173063][ T4340] Possible unsafe locking scenario: [ 80.173063][ T4340] [ 80.180625][ T4340] CPU0 CPU1 [ 80.186018][ T4340] ---- ---- [ 80.191496][ T4340] lock(rfkill_global_mutex); [ 80.196288][ T4340] lock(&data->open_mutex); [ 80.203424][ T4340] lock(rfkill_global_mutex); [ 80.210739][ T4340] lock((work_completion)(&hdev->bg_scan_update)); [ 80.217558][ T4340] [ 80.217558][ T4340] *** DEADLOCK *** [ 80.217558][ T4340] [ 80.225725][ T4340] 1 lock held by syz.0.17/4340: [ 80.230723][ T4340] #0: ffffffff8d6c5de8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x18b/0x560 [ 80.240954][ T4340] [ 80.240954][ T4340] stack backtrace: [ 80.246953][ T4340] CPU: 1 PID: 4340 Comm: syz.0.17 Not tainted syzkaller #0 [ 80.254279][ T4340] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 80.264706][ T4340] Call Trace: [ 80.268098][ T4340] [ 80.271060][ T4340] dump_stack_lvl+0x188/0x250 [ 80.276011][ T4340] ? load_image+0x400/0x400 [ 80.280634][ T4340] ? show_regs_print_info+0x20/0x20 [ 80.285883][ T4340] ? print_circular_bug+0x12b/0x1a0 [ 80.291124][ T4340] check_noncircular+0x296/0x330 [ 80.296747][ T4340] ? look_up_lock_class+0x71/0x110 [ 80.301983][ T4340] ? add_chain_block+0x940/0x940 [ 80.306970][ T4340] ? lockdep_lock+0xf1/0x1f0 [ 80.311764][ T4340] ? __lock_acquire+0x12e8/0x7d10 [ 80.316918][ T4340] ? mark_lock+0x94/0x320 [ 80.321371][ T4340] ? _find_first_zero_bit+0xce/0xf0 [ 80.326888][ T4340] __lock_acquire+0x2c42/0x7d10 [ 80.331872][ T4340] ? verify_lock_unused+0x140/0x140 [ 80.337286][ T4340] ? verify_lock_unused+0x140/0x140 [ 80.342798][ T4340] ? mark_lock+0x94/0x320 [ 80.347160][ T4340] lock_acquire+0x19e/0x400 [ 80.351786][ T4340] ? __flush_work+0xfa/0x210 [ 80.356492][ T4340] ? __lock_acquire+0x7d10/0x7d10 [ 80.361606][ T4340] ? read_lock_is_recursive+0x10/0x10 [ 80.367216][ T4340] ? start_flush_work+0x776/0x820 [ 80.372490][ T4340] __flush_work+0x116/0x210 [ 80.377176][ T4340] ? __flush_work+0xfa/0x210 [ 80.381802][ T4340] ? flush_work+0x20/0x20 [ 80.386162][ T4340] ? try_to_grab_pending+0xfa/0x7f0 [ 80.391724][ T4340] ? mark_lock+0x94/0x320 [ 80.396529][ T4340] ? lockdep_hardirqs_on_prepare+0x409/0x770 [ 80.402693][ T4340] ? lock_chain_count+0x20/0x20 [ 80.407589][ T4340] ? mark_lock+0x94/0x320 [ 80.411956][ T4340] ? __cancel_work_timer+0x36a/0x560 [ 80.417273][ T4340] __cancel_work_timer+0x3f4/0x560 [ 80.422425][ T4340] ? cancel_work_sync+0x20/0x20 [ 80.428107][ T4340] ? __cancel_work+0x1f9/0x2e0 [ 80.433077][ T4340] ? lockdep_hardirqs_on+0x94/0x140 [ 80.438311][ T4340] ? __cancel_work+0x27b/0x2e0 [ 80.443107][ T4340] ? cancel_work+0x20/0x20 [ 80.447734][ T4340] ? lock_chain_count+0x20/0x20 [ 80.452621][ T4340] hci_request_cancel_all+0xcc/0x300 [ 80.458007][ T4340] hci_dev_do_close+0x4e/0x1030 [ 80.463071][ T4340] ? _raw_spin_unlock_irqrestore+0xc1/0x120 [ 80.469030][ T4340] ? _raw_spin_unlock+0x40/0x40 [ 80.474003][ T4340] hci_rfkill_set_block+0x10a/0x190 [ 80.479242][ T4340] ? rcu_lock_release+0x20/0x20 [ 80.484214][ T4340] rfkill_set_block+0x1c9/0x3d0 [ 80.489270][ T4340] rfkill_fop_write+0x452/0x560 [ 80.494413][ T4340] ? rfkill_fop_read+0x520/0x520 [ 80.499576][ T4340] ? common_file_perm+0x140/0x1c0 [ 80.504717][ T4340] ? fsnotify_perm+0x5d/0x560 [ 80.509424][ T4340] ? security_file_permission+0x75/0xa0 [ 80.515095][ T4340] ? rfkill_fop_read+0x520/0x520 [ 80.520167][ T4340] vfs_write+0x30b/0xd60 [ 80.524810][ T4340] ? file_end_write+0x250/0x250 [ 80.529697][ T4340] ? __context_tracking_exit+0x4c/0x80 [ 80.532066][ T13] Bluetooth: hci0: command 0x040f tx timeout [ 80.535270][ T4340] ? __lock_acquire+0x7d10/0x7d10 [ 80.546280][ T4340] ? __fdget_pos+0x1e2/0x370 [ 80.550900][ T4340] ksys_write+0x152/0x260 [ 80.555633][ T4340] ? __ia32_sys_read+0x80/0x80 [ 80.560427][ T4340] ? lockdep_hardirqs_on+0x94/0x140 [ 80.565661][ T4340] do_syscall_64+0x4c/0xa0 [ 80.570149][ T4340] ? clear_bhb_loop+0x30/0x80 [ 80.574852][ T4340] ? clear_bhb_loop+0x30/0x80 [ 80.579654][ T4340] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 80.585581][ T4340] RIP: 0033:0x7f62cb5a5dd9 [ 80.590023][ T4340] 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 [ 80.610090][ T4340] RSP: 002b:00007ffd8ff69298 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 80.618625][ T4340] RAX: ffffffffffffffda RBX: 00007f62cb81efa0 RCX: 00007f62cb5a5dd9 [ 80.626713][ T4340] RDX: 0000000000000008 RSI: 00002000000000c0 RDI: 0000000000000003 [ 80.634725][ T4340] RBP: 00007f62cb63bd69 R08: 0000000000000000 R09: 0000000000000000 [ 80.642899][ T4340] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 80.651089][ T4340] R13: 00007f62cb81efac R14: 00007f62cb81efa0 R15: 00007f62cb81efa0 [ 80.659098][ T4340]